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Tropical Storm Bertha Near Texas/Louisiana Border

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The center of Tropical Storm Bertha moved back inland near the border between Texas and Louisiana on Thursday afternoon.  At 2:00 p.m. EDT on Thursday the center of Tropical Storm Bertha was located at latitude 29.9°N and longitude 93.8°W which put the center about 20 miles (30 km) east of Port Arthur, Texas.  Bertha was moving toward the west at 10 m.p.h. (16 km/h).  The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h).  The minimum surface pressure was 1004 mb.

A Tropical Storm Warning is in effect for the portion of the coast from Morgan City, Louisiana to Sargent, Texas.

Tropical Storm Bertha was bringing gusty winds to southern Louisiana and eastern Texas on Thursday afternoon.  However, the strongest winds were in the southeastern part of Bertha’s circulation.  Those winds were occurring over the Gulf of Mexico.

The distribution of wind speeds around Tropical Storm Bertha was very asymmetrical.  Winds to tropical storm force extended out 160 miles (260 km) in the southern part of Bertha’s circulation.  Winds to tropical storm force only extended out 25 miles (40 km) in the northern side of Tropical Storm Bertha.

The heaviest rain was falling in thunderstorms located in bands in the southwestern periphery of Tropical Storm Bertha.  Those thunderstorms were over the Gulf of Mexico east of Texas.  Light to moderate rain was falling over southern Louisiana and eastern Texas from showers and a few thunderstorms in bands closer to the low level center of Bertha’s circulation.

Tropical Storm Bertha will move around the southern side of a high pressure system that is over the Southern Plains.  The high pressure system will steer Bertha toward the west-southwest during the next 24 hours. On its anticipated track, the center of Tropical Storm Bertha will move inland over eastern and south central Texas.

Tropical Storm Bertha will produce gusty winds over eastern and south central Texas as it moves inland.  Thunderstorms, primarily south of the center of Bertha’s circulation, could produce heavy rain in some locations.  Heavy rain could cause flash floods in some places.

Tropical Storm Bertha Moves Across Southeast Louisiana

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Tropical Storm Bertha moved across southeastern Louisiana on Wednesday evening.  At 11:00 p.m. EDT on Wednesday the center of Tropical Storm Bertha’ was located at latitude 29.4°N and longitude 91.1°W which put the center about 75 miles (120 km) southwest of New Orleans, Louisiana.  Bertha was moving toward the west-southwest at 12 m.p.h. (19 km/h).  The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h).  The minimum surface pressure was 1002 mb.

A Tropical Storm Warning is in effect for the portion of the coast from the Mississippi/Alabama border to Sargent, Texas.  A Tropical Storm Warning is in effect for New Orleans.  A Tropical Storm Warning is in effect for Lake Pontchartrain.

Strong northeasterly winds in the upper levels of the atmosphere appeared to be blowing the middle and upper parts of Tropical Storm Bertha to the southwest of the surface circulation.  The center of the surface circulation was south-southeast of Morgan City, Louisiana.  Thunderstorms were still occurring in bands in the southwestern part of the surface circulation around Tropical Storm Bertha.  Bands in the other parts of Bertha’s circulation consisted primarily of showers and lower clouds.  It is possible that a new center of circulation could develop closer to the area of showers and thunderstorms.

The strongest winds were occurring in the southeastern part of Tropical Storm Bertha.  Those winds were occurring over the Gulf of Mexico.  Winds to tropical storm force extended out 160 miles (260 km) in the southern side of Bertha’s circulation.  Winds to tropical storm force only extended out 60 miles (95 km) in the northern side of Tropical Storm Bertha.

Tropical Storm Bertha will move through an environment that will be unfavorable for intensification during the next 18 hours.  Bertha will move over water where the Sea Surface Temperatures are near 29°C.  It will move under southeastern part of an upper level ridge that is centered over the South Central U.S.  The upper level ridge will produce strong northeasterly winds that will blow across the top of Bertha’s circulation.  Those upper level winds will continue to cause strong vertical wind shear.  Tropical Storm Bertha is likely to continue to weaken during the next 18 hours unless a new center of circulation forms near the thunderstorms over the Gulf of Mexico.

Tropical Storm Bertha will move around the southern side of a high pressure system that is over the southern Mississippi River Valley.  The high pressure system will steer Bertha toward the west during the next 24 hours.  On its anticipated track, the center of Tropical Storm Bertha will move over eastern Texas south of Galveston on Thursday evening.

Tropical Storm Bertha will bring gusty winds to the northwestern Gulf Coast.  Bertha could drop locally heavy rain over parts of southern Louisiana and eastern Texas.

Tropical Storm Bertha Weakens

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Tropical Storm Bertha weakened on Wednesday morning as it moved toward southeastern Louisiana.  At 2:00 p.m. EDT on Wednesday the center of Tropical Storm Bertha was located at latitude 29.9°N and longitude 89.1°W which put the center about 60 miles (95 km) east of New Orleans, Louisiana.  Bertha was moving toward the west-northwest at 7 m.p.h. (11 km/h).  The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h).  The minimum surface pressure was 1000 mb.

A Tropical Storm Warning is in effect for the portion of the coast from the Alabama/Florida border to Morgan City, Louisiana.  A Tropical Storm Warning is in effect for New Orleans.  A Tropical Storm Warning is in effect for Lake Pontchartrain.

A Tropical Storm Watch is in effect for Lake Maurepas.   A Tropical Storm Watch is in effect for the portion of the coast from Morgan City to Sargent, Texas.

Tropical Storm Bertha weakened on Wednesday morning because of strong northeasterly winds in the upper troposphere.  Those winds were causing strong vertical wind shear, and the wind shear was causing Bertha to weaken.  The vertical wind shear was also affecting the structure of Tropical Storm Bertha.  Most of the bands revolving around the center of Bertha’s circulation consisted primarily of showers and lower clouds.  Thunderstorms were still occurring in bands in the far southwestern part of Tropical Storm Bertha.  There were no thunderstorms near the center of Bertha to generate upper level divergence.  Convergence of mass in the lower atmosphere was causing the surface pressure to increase.

Tropical Storm Berta was still producing sustained winds to tropical storm force.  Winds to tropical storm force extended out 105 miles (165 km) in the eastern side of Bertha’s circulation.  Winds to tropical storm force extended out 70 miles (110 km) in the western side of Tropical Storm Bertha.

Tropical Storm Bertha will move through an environment that will be unfavorable for intensification during the next 24 hours.  Bertha will move over water where the Sea Surface Temperatures are near 29°C.  It will move under southeastern part of an upper level ridge that is centered over the South Central U.S.  The upper level ridge will produce strong northeasterly winds that will blow across the top of Bertha’s circulation. Those upper level winds will continue to cause strong vertical wind shear.  Tropical Storm Bertha will continue to weaken during he next 24 hours.

Tropical Storm Bertha will move around the southern side of a high pressure system that is over the southern Mississippi River Valley.  The high pressure system will steer Bertha toward the west during the next 24 hours.  On its anticipated track, the center of Tropical Storm Bertha will move over southeastern Louisiana in a few hours.

Tropical Storm Bertha will bring gusty winds to the central Gulf Coast.  Since the strongest winds are in the southern part of Bertha’s circulation, those winds will remain over the Gulf of Mexico during the next 24 hours.  Bands on the northern side of Tropical Storm Bertha could drop locally heavy rain over parts of southern Alabama, southern Mississippi, and southern Louisiana. Bertha could also cause a storm surge of up to 4 feet (1 meter) along parts of the coast of southeastern Louisiana.

Tropical Storm Arthur Weakens

Former Tropical Storm Arthur weakened on Wednesday evening as it moved along the coast near Galveston, Texas.  At 11:00 p.m. EDT on Wednesday the center of Tropical Depression Arthur was located at latitude 29.7°N and longitude 94.5°W which put the center about 35 miles (55 km) north-northeast of Galveston, Texas.  Arthur was moving toward the northeast at 9 m.p.h. (15 km/h).  The maximum sustained wind speed was 35 m.p.h. (55 km/h) and there were wind gusts to 45 m.p.h. (75 km/h).  The minimum surface pressure was 1000 mb.

An upper level trough over the central U.S. was producing westerly winds that were blowing across the top of Tropical Depression Arthur on Wednesday evening.  The upper level winds blew the tops off of many of the thunderstorms in Arthur.  A few thunderstorms were still occurring in bands in the eastern periphery of Arthur’s circulation.  The other bands revolving around the center of Arthur consisted primarily of showers and lower clouds.

Tropical Depression Arthur will move around the northwestern side of a high pressure system that extends from the western Atlantic Ocean to over the Gulf of Mexico.  The high pressure system will steer Arthur toward the northeast during the next 24 hours.  On its anticipated track, Tropical Depression Arthur will move near the border between Texas and Louisiana on Thursday.  Arthur will start to move toward the east by Friday.

Tropical Depression Arthur could interact with a stationary front to drop heavy rain over parts of the Southeast U.S.  Heavy rain could cause floods in some locations.

Flood Watches are in effect for southeast Texas, most of Louisiana, the southern half of Mississippi, central Alabama, Northwest Florida, and northern Georgia.

Tropical Storm Arthur Develops Near Texas Coast

Tropical Storm Arthur developed near the coast of Texas on Wednesday morning.  At 12:30 p.m. EDT on Wednesday the center of Tropical Storm Arthur was located at latitude 28.8°N and longitude 95.5°W which put the center about 40 miles (65 km) southwest of Galveston, Texas. Arthur was moving toward the northeast at 9 m.p.h. (15 km/h).  The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h).  The minimum surface pressure was 999 mb.

A Tropical Storm Warning is in effect for the portion of the coast from Sargent, Texas to Morgan City Louisiana.

A low pressure system near the coast of Texas, formerly called Potential Tropical Cyclone One, strengthened on Wednesday morning and the U.S. National Hurricane Center designated the system as Tropical Storm Arthur.

The strongest winds were occurring in bands in the eastern and northern sides of Tropical Storm Arthur.

A weather station in Galveston, Texas, (KGLS) reported a sustained wind speed of 39 m.p.h. (63 km/h) and a wind gust of 59 m.p.h. (95 km/h).

NOAA buoy 42035 which is east of Galveston, Texas reported a sustained wind speed of 45 m.p.h. (75 km/h) and a wind gust of 52 m.p.h. (83 km/h).

A weather station on oil platform Galveston 209A (KGVW) reported a sustained wind speed of 70 m.p.h. (113 km/h) and a wind gust of 80 m.p.h. (130 km/h).  It should be noted that the weather station is 121 feet (37 meters) above sea level.

The distribution of thunderstorms in Tropical Storm Arthur was asymmetrical.  Thunderstorms were occurring in bands in the eastern and northern parts of Arthur’s circulation.  Bands in the western and southern parts of Tropical Storm Arthur consisted primarily of showers and lower clouds.

The surface center of Tropical Storm Arthur appeared to be east of a low in the middle troposphere based on visible satellite loops.  The middle level low was producing southwesterly winds that were blowing toward the top of Arthur’s circulation.  Those winds were causing strong vertical wind shear.  The vertical wind shear was causing the asymmetrical distribution of thunderstorms.

The strongest winds were occurring in the bands of thunderstorms in the eastern and northern parts of Tropical Storm Arthur.  Winds to tropical storm force extended out 175 miles (280 km) in the eastern half of Arthur’s circulation.  Winds in the western half of Tropical Storm Arthur were blowing at less than tropical storm force.

Tropical Storm Arthur will move around the northwestern side of a high pressure system that extends from the western Atlantic Ocean to over the Gulf of Mexico.  The high pressure system will steer Arthur toward the northeast during the next 24 hours.  On its anticipated track, Arthur will move inland near the border between Texas and Louisiana in a few hours.

Tropical Storm Arthur will move through an environment that will be marginally favorable for intensification during the next few hours.  Arthur will move over water where the Sea Surface Temperatures are near 28°C.  It will move under the southern part of an upper level trough that is over the central U.S.  The upper level trough will produce westerly winds that will blow toward the top of Arthur’s circulation.  Those winds will cause strong vertical wind shear.  The vertical wind shear will inhibit development, but the wind shear may not be enough to prevent some intensification.  Tropical Storm Arthur could intensify during the next few hours before it makes landfall in Louisiana.

Tropical Storm Arthur will bring gusty winds and heavy rain to parts of the southeastern U.S.  Heavy rain is likely to cause floods in some locations.

Flood Watches are in effect for southeast Texas, most of Louisiana, the southern half of Mississippi, central Alabama, Northwest Florida, and northern Georgia.

Tropical Storm Arthur could also cause a storm surge of up to 4 feet (1 meter) along the coast of Louisiana.

Tropical Storm Warning Issued for Louisiana

The potential risk posed by a low pressure system near Corpus Christi, Texas prompted the U.S. National Hurricane Center to issue a Tropical Storm Warning for a portion of the coast of Louisiana on Tuesday afternoon.  The National Hurricane Center has designated the low pressure system as Potential Tropical Cyclone One.  At 8:00 p.m. EDT on Tuesday the center of Potential Tropical Cyclone One was located at latitude 27.6°N and longitude 97.3°W which put the center about 15 miles (25 km) south-southeast of Corpus Christi, Texas.  The low pressure system was moving toward the northeast at 6 m.p.h. (10 km/h).  The maximum sustained wind speed was 30 m.p.h. (50 km/h) and there were wind gusts to 40 m.p.h. (65 km/h).  The minimum surface pressure was 1004 mb.

A Tropical Storm Warning is in effect for the portion of the coast from Sabine Pass to Morgan City, Louisiana.

A Tropical Storm Watch is in effect for the portion of the coast from Sargent, Texas to Sabine Pass, Louisiana.

The National Hurricane Center designated a low pressure system over South Texas as Potential Tropical Cyclone One on Tuesday. The distribution of thunderstorms in Potential Tropical Cyclone One was still asymmetrical on Tuesday evening. Thunderstorms were occurring in bands in the eastern side of the low pressure system. The strongest thunderstorms were occurring in bands that were over the Gulf of Mexico. Bands in the western half of the low pressure system consisted primarily of showers and lower clouds. Storms near the center of circulation generated upper level divergence that pumped mass away from the low pressure system. The removal of mass caused the surface pressure to slowly decrease.

Potential Tropical Cyclone One will move around the northwestern side of a high pressure system that extends from the western Atlantic Ocean to over the Gulf of Mexico.  The high pressure system will steer the low pressure system toward the northeast during the next 24 hours . On its anticipated track, the low pressure system could move over the northwestern Gulf of Mexico.

If Potential Tropical Cyclone One moves over the northwestern Gulf of Mexico, it will move into an environment that will be marginally favorable for the development of a tropical storm.  The low pressure system will move over water where the Sea Surface Temperatures are near 28°C.  It will move under the southern part of an upper level trough that is over the eastern U.S.  The upper level trough will produce westerly winds that will blow toward the top of Potential Tropical Cyclone One.  Those winds will cause moderate vertical wind shear.  The vertical wind shear will inhibit development, but the wind shear may not be enough to prevent the formation of a tropical depression or a tropical storm.

The U.S. National Hurricane Center is indicating that the probability is 70% that a tropical depression or a tropical storm forms over the northwestern Gulf of Mexico. Reconnaissance planes have been tentatively tasked to fly into the the low pressure system on Wednesday, if necessary.

The low pressure system has already dropped heavy rain over parts of South Texas and northern Mexico.

Flood Watches are in effect for South Texas, southeast Texas, most of Louisiana, the southern half of Mississippi, central Alabama, Northwest Florida, and northern Georgia.

Tropical Storm Watch Issued for Texas and Louisiana

The potential risk posed by a low pressure system over South Texas prompted the U.S. National Hurricane Center to issue a Tropical Storm Watch for a portion of the coast of Texas and Louisiana on Tuesday.  The National Hurricane Center also designated the low pressure system as Potential Tropical Cyclone One.  At 2:00 p.m. EDT on Tuesday the center of Potential Tropical Cyclone One was located at latitude 27.19°N and longitude 97.8°W which put the center about 55 miles (90 km) southwest of Corpus Christi, Texas.  The low pressure system was moving toward the northeast at 6 m.p.h. (10 km/h).  The maximum sustained wind speed was 30 m.p.h. (50 km/h) and there were wind gusts to 40 m.p.h. (65 km/h).  The minimum surface pressure was 1006 mb.

A Tropical Storm Watch is in effect for the portion of the coast from Sargent, Texas to Morgan City, Louisiana.

The National Hurricane Center designated a low pressure system over South Texas as Potential Tropical Cyclone One on Tuesday.  The distribution of thunderstorms in Potential Tropical Cyclone One was asymmetrical.  Thunderstorms were occurring in bands in the eastern side of the low pressure system.  The strongest thunderstorms were occurring in bands that were over the Gulf of Mexico.  Bands in the western half of the low pressure system consisted primarily of showers and lower clouds.  Storms near the center of circulation generated upper level divergence that pumped mass away from the low pressure system.  The removal of mass caused the surface pressure to slowly decrease.

Potential Tropical Cyclone One will move around the northwestern side of a high pressure system that extends from the western Atlantic Ocean to over the Gulf of Mexico.  The high pressure system will steer the low pressure system toward the northeast during the next 24 hours.   On its anticipated track, the low pressure system could move over the northwestern Gulf of Mexico.

If Potential Tropical Cyclone One moves over the northwestern Gulf of Mexico, it will move into an environment that will be marginally favorable for the development of a tropical storm.  The low pressure system will move over water where the Sea Surface Temperatures are near 28°C.  It will move under the southern part of an upper level trough that is over the eastern U.S.  The upper level trough will produce westerly winds that will blow toward the top of Potential Tropical Cyclone One.  Those winds will cause moderate vertical wind shear.  The vertical wind shear will inhibit development, but the wind shear may not be enough to prevent the formation of a tropical depression or a tropical storm.

The U.S. National Hurricane Center is indicating that the probability is 70% that a tropical depression or a tropical storm forms over the northwestern Gulf of Mexico.  Reconnaissance planes have been tentatively tasked to fly into the the low pressure system on Tuesday night and Wednesday, if necessary.

The low pressure system has already dropped heavy rain over parts of South Texas and northern Mexico.

Flood Watches are in effect for South Texas, southeast Texas, most of Louisiana, and the southern half of Mississippi.

Low Pressure over South Texas

A low pressure system formed over South Texas on Monday evening.  The low pressure system was designated as Invest 90L by the U.S. National Weather Service.  At 2:00 a.m. EDT on Tuesday the center of a low pressure system was located at latitude 26.9°N and longitude 99.3°W which put the center about 35 miles (55 km) south-southeast of Laredo, Texas.  The low pressure system was moving toward the northeast at 8 m.p.h. (13 km/h).  The maximum sustained wind speed was 25 m.p.h. (35 km/h) and there were wind gusts to 35 m.p.h. (55 km/h).  The minimum surface pressure was 1009 mb.

An upper level low interacting with the northern end of a tropical wave caused a surface low pressure system to form over South Texas on Monday evening.  The low pressure system was evident on surface weather maps which showed a weak counterclockwise rotation over southern Texas.  Thunderstorms were occurring in bands in the eastern side of the low pressure system.  Bands in the western and southern parts of the low pressure system consisted primarily of showers and lower clouds.

The low pressure system will move around the northwestern side of a high pressure system that extends from the western Atlantic Ocean to over the Gulf of Mexico.  The high pressure system will steer the low pressure system toward the northeast during the next 24 hours.  On its anticipated track, the low pressure system could move over the northwestern Gulf of Mexico.

If the low pressure system moves over the northwestern Gulf of Mexico, it will move into an environment that will be marginally favorable for the development of a tropical storm.  The low pressure system will move over water where the Sea Surface Temperatures are near 28°C.  It will move under the southern part of an upper level trough that is over the eastern U.S.  The upper level trough will produce westerly winds that will blow toward the top of the low pressure system.  Those winds will cause moderate vertical wind shear.  The vertical wind shear will inhibit development, but the wind shear may not be enough to prevent the formation of a tropical depression or a tropical storm.

The U.S. National Hurricane Center is indicating that the probability is 60% that a tropical storm forms over the northwestern Gulf of Mexico.  Reconnaissance planes have been tentatively tasked to fly into the the low pressure system on Tuesday night and Wednesday, if necessary.

The low pressure system has already dropped heavy rain over parts of South Texas and northern Mexico.

Flood Watches are in effect for South Texas, southeast Texas, most of Louisiana, and southern Mississippi.

 

Tropical Storm Francine Churns over Western Gulf of Mexico

Tropical Storm Francine was churning over the western Gulf of Mexico on Tuesday morning.  At 8:00 a.m. EDT on Tuesday the center of Tropical Storm Francine located at latitude 24.5°N and longitude 94.9°W which put the center about 395 miles (640 km) south-southwest of Cameron, Louisiana.  Francine was moving toward the north at 5 m.p.h. (8 km/h).  The maximum sustained wind speed was 65 m.p.h. (105 km/h) and there were wind gusts to 80 m.p.h. (130 km/h).  The minimum surface pressure was 990 mb.

A Hurricane Warning is in effect for the portion of the coast from Sabine Pass to Grand Isle. Louisiana.

A Tropical Storm Warning is in effect for the portion of the coast from Grand Isle, Louisiana to the Mouth of the Pearl River.  The Tropical Storm Warning includes New Orleans.  The Tropical Storm Warning also includes Lake Pontchartrain and Lake Maurepas.  A Tropical Storm Warning is in effect for the portion of the coast from High Island, Texas to Sabine Pass, Louisiana.  A Tropical Storm Warning is in effect for the portion of the coast from Port Mansfield, Texas to the Mouth of the Rio Grande River.  A Tropical Storm Warning is in effect for the portion of the coast from La Pesca, Mexico to the Mouth of the Rio Grande River.

A Tropical Storm Watch is in effect for the portion of the coast from High Island to Port Mansfield, Texas.  A Tropical Storm Watch is in effect for the portion of the coast from Barra del Tordo to La Pesca, Mexico.

Rainbands in the western side of Tropical Storm Francine were dropping heavy rain on parts of south Texas.  A Flash Flood Warning is in effect for the area around Brownsville, Texas.

The circulation around Tropical Storm Francine showed signs of developing an inner core on Tuesday morning.  The inner end of a rainband wrapped most of the way around the center of Francines’s circulation.  An eye with a diameter of 25 miles (40 km) appeared to be forming at the center of Tropical Storm Francine.  The eye was surrounded by a nearly complete ring of thunderstorms and the strongest winds were occurring in that ring of storms.  Thunderstorms were occurring in bands in the northeastern part of Francine’s circulation.  Thunderstorms were also occurring in bands in the western side of Tropical Storm Francine.

The size of the circulation around Tropical Storm Francine contracted a little as it began to resemble a typical tropical cyclone.  Winds to tropical storm force extended out 140 miles (220 km) from the center of Francine’s circulation.

Tropical Storm Francine will move through an environment very favorable for intensification during the next 24 hours.  Francine will move over water where the Sea Surface Temperatures are near 30°C.  It will move under the middle of an upper level ridge over the western Gulf of Mexico.  The upper level winds are weak near the middle of the ridge and there will be little vertical wind shear.  Tropical Storm Francine will intensify to a hurricane during the next 24 hours.  Francine could intensify rapidly after the inner core is fully formed.

Tropical Storm Francine will move around the western part of a high pressure system that extends from the western Atlantic Ocean to the Gulf of Mexico.  The high pressure system will steer Francine toward the northeast during the next 24 hours.  On its anticipated track, Tropical Storm Francine will move toward Louisiana.  Francine will move faster toward the northeast on Wednesday when an upper level trough over the south central U.S. also begins to steer it toward the coast.  Tropical Storm Francine will approach the coast of Louisiana on Wednesday afternoon.  Francine will be a hurricane when it approaches the coast of Louisiana.

Tropical Storm Francine will bring strong winds and heavy rain to Louisiana.  Francine will be capable of causing serious damage.  Widespread outages of electricity are likely.  Heavy rain is likely to cause flash floods.

Flood Watches are in effect for parts of Louisiana.

Tropical Storm Francine could cause a storm surge of up to 10 feet (3 meters) along parts of the coast of Louisiana.

A Storm Surge Warning is in effect for the portion of the coast from High Island, Texas to the Mouth of the Mississippi River.  The Storm Surge Warning includes Vermilion Bay.

 

 

Tropical Storm Francine Prompts Hurricane Watch for Louisiana

The risk posed by Tropical Storm Francine prompted the issuance of a Hurricane Watch for a portion of the coast of Louisiana on Monday morning.  At 11:00 a.m. EDT on Monday the center of Tropical Storm Francine located at latitude 23.0°N and longitude 94.9°W which put the center about 480 miles (770 km) south-southwest of Cameron, Louisiana.  Francine was moving toward the north-northwest at 5 m.p.h. (8 km/h).  The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 60 m.p.h. (95 km/h).  The minimum surface pressure was 1002 mb.

A Hurricane Watch is in effect for the portion of the coast from Cameron to Grand Isle, Louisiana.

A Tropical Storm Watch is in effect for the portion of the coast from Grand Isle, Louisiana to the Mississippi/Alabama border.  The Tropical Storm Watch includes New Orleans.  The Tropical Storm Watch also includes Lake Pontchartrain and Lake Maurepas.  A Tropical Storm Watch is in effect for the portion of the coast from High Island, Texas to Cameron, Louisiana.  A Tropical Storm Watch is in effect for the portion of the coast from Port Mansfield, Texas to the Mouth of the Rio Grande River.  A Tropical Storm Watch is in effect for the portion of the coast from Barra del Tordo, Mexico to the Mouth of the Rio Grande River.

A U.S. Air Force Reserve Hurricane Hunter plane investigated a low pressure system over the western Gulf of Mexico previously designated as Potential Tropical Cyclone Six on Monday morning.  The crew of the aircraft found that the circulation around the low pressure system was more organized.  Based on the data from the aircraft, the U.S. National Hurricane Center determined that former Potential Tropical Cyclone Six had developed the characteristics of a tropical storm.  The National Hurricane Center designated former Potential Tropical Cyclone Six as Tropical Storm Francine.

A distinct low level center of circulation formed at the center of Tropical Storm Francine.  Thunderstorms had formed near the center of Francine’s circulation.  More thunderstorms also developed in bands revolving around the center of Tropical Storm Francine.  Storms near the center of Francine generated upper level divergence that pumped mass away from the tropical storm.

The circulation around Tropical Storm Francine was more symmetrical on Monday morning.  Winds to tropical storm force extended out 160 miles (260 km) from the center of Francine’s circulation.

Tropical Storm Francine will move through an environment very favorable for intensification during the next 24 hours.  Francine will move over water where the Sea Surface Temperatures are near 30°C.  It will move under the middle of an upper level ridge over the western Gulf of Mexico.  The upper level winds are weak near the middle of the ridge and there will be little vertical wind shear.  Tropical Storm Francine is likely to intensify gradually during the next few hours while an inner core develops.  Francine could intensify rapidly on Tuesday after an inner core forms.  Tropical Storm Francine is likely to strengthen to a hurricane on Tuesday.

Tropical Storm Francine will move around the western part of a high pressure system that extends from the western Atlantic Ocean to the Gulf of Mexico.  The high pressure system will steer Francine toward the north during the next 24 hours.  On its anticipated track, Tropical Storm Francine will move toward Louisiana.  Francine will move more toward the northeast on Wednesday when an upper level trough over the south central U.S. begins to steer it toward the coast.  Tropical Storm Francine will approach the coast of Louisiana on Wednesday afternoon.  Francine is likely to be a hurricane when it approaches the coast of Louisiana.

Tropical Storm Francine will bring strong winds and heavy rain to Louisiana.  Francine will be capable of causing serious damage.  Heavy rain is likely to cause flash floods.

Flood Watches are in effect for parts of Louisiana.

Tropical Storm Francine could cause a storm surge of up to 10 feet (3 meters) along parts of the coast of Louisiana.

A Storm Surge Watch is in effect for the portion of the coast from High Island, Texas to the Mouth of the Pearl River.  The Storm Surge Watch includes, Vermillion Bay, Lake Pontchartrain and Lake Maurepas.