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Hurricane Delta Brings Wind and Rain to Louisiana

Hurricane Delta brought wind and rain to Louisiana on Friday evening.  At 8:00 p.m. EDT on Friday the center of Hurricane Delta was located at latitude 30,0°N and longitude 93.0°W which put it about 25 miles west-southwest of Jennings, Louisiana.  Delta was moving toward the north-northwest at 14 m.p.h. (22 km/h).  The maximum sustained wind speed was 90 m.p.h. (145 km/h) and there were wind gusts to 105 m.p.h. (165 km/h).  The minimum surface pressure was 971 mb.

A Hurricane Warning was in effect for the portion of the coast from High Island, Texas to Morgan City, Louisiana.  Tropical Storm Warnings were in effect for the portions of the coast from San Luis Pass to High Island, Texas and from Morgan City, Louisiana to the Mouth of the Pearl River.  The Tropical Storm Warning includes New Orleans, Lake Pontchartrain and Lake Maurepas.

According the National Hurricane Center the center of Hurricane Delta officially made landfall on the coast of Louisiana near Creole.  The maximum sustained wind speed at the time of landfall was 100 m.p.h. (160 km/h).  Winds to hurricane force extended out 40 miles (65 km) from the center of circulation.  Winds to tropical storm force extended out 160 miles (260 km).

Hurricane Delta weakened on Friday while moved toward the coast of Louisiana.  An upper level trough produced southwesterly winds which blew toward the top of Delta.  Those winds caused moderate vertical wind shear.  The circulation around Hurricane Delta pulled drier air about the southern side of the hurricane.  In addition, Delta moved over cooler water near the coast of Louisiana.  The combination of shear, drier air and cooler water caused the circulation to weaken on Friday afternoon.

Even though it weakened, Hurricane Delta brought strong winds and rain to Louisiana.  A weather station in Lake Charles, Louisiana reported a sustained wind speed of 64 m.p.h. (103 km/h) and a wind gust of 95 m.p.h. (153 km/h).  A weather station at Lake Arthur, Louisiana reported a sustained wind speed of 77 m.p.h. (125 km/h) and a wind gust of 96 m.p.h. (154 km/h).  A weather station at Cameron, Louisiana reported a sustained wind speed of 58 m.p.h. (93 km/h) and a wind gust of 78 m.p.h. (128 km/h).  A weather station at Port Arthur, Texas reported a wind gust of 71 m.p.h. (114 km/h).

Winds blowing around the eastern side of Hurricane Delta pushed water toward the coast and cause a storm surge.  A station at Freshwater Canal Locks in Louisiana reported a water level rise of 8 feet (2.4 meters).  Delta also dropped heavy rain over parts of Louisiana.  Flash Flood Warnings were issued for some of the areas around Lake Charles and Lafayette, Louisiana.

Hurricane Delta will weaken steadily as it moves farther inland.  The upper level trough will steer Delta toward the northeast during the next several days.  On its anticipated track Delta will move across Louisiana toward southwest Tennessee.  The center of Delta will pass near Alexandria and Monroe, Louisiana.  Flash Flood Watches were in effect for Louisiana, northern Mississippi. southeastern Arkansas, and southwestern Tennessee.

Hurricane Delta Nears Louisiana

Hurricane Delta neared the coast of Louisiana on Friday morning.  At 11:00 a.m. EDT on Friday the center of Hurricane Delta was located at latitude 28.0°N and longitude 93.8°W which put it about 130 miles (215 km) south of Cameron, Louisiana.  Delta was moving toward the north at 13 m.p.h. (20 km/h).  The maximum sustained wind speed was 115 m.p.h. (185 km/h) and there were wind gusts to 135 m.p.h. (220 km/h).  The minimum surface pressure was 962 mb.

A Hurricane Warning was in effect for the portion of the coast from High Island, Texas to Morgan City, Louisiana.  Tropical Storm Warnings were in effect for the portions of the coast from Sargent to High Island Texas and from Morgan City, Louisiana to the Mouth of the Pearl River.  The Tropical Storm Warning included New Orleans, Lake Pontchartrain and Lake Maurepas.

Hurricane Delta started to weaken slowly on Friday morning as it moved into a less favorable environment.  An upper level trough over the south central U.S.  was producing southwesterly winds which were blowing toward the top of Delta.  Those winds were starting to increase the vertical wind shear.  They were also inhibiting upper level divergence to the south of the hurricane which was causing the surface pressure to increase.

Even though it was weakening, Hurricane Delta remained a formidable hurricane.  There was an eye with a diameter of 40 miles (65 km) at the center of Delta.  The eye was surrounded by a ring of strong thunderstorms and the strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms revolving the core of Hurricane Delta were already dropping heavy rain over parts of southeast Texas and southwest Louisiana.

Winds to hurricane force extended out 40 miles (65 km) from the center of Hurricane Delta.  Winds to tropical storm force extended out 160 miles (260 km) from the center of circulation.  The Hurricane Intensity Index (HII) for Hurricane Delta was 20.6.  The Hurricane Size Index (HSI) was 13.8 and the Hurricane Wind Intensity Size Index (HWISI) was 34.4.  Hurricane Delta was capable of causing regional major damage.

The upper level trough over the south central U.S. will steer Hurricane Delta toward the north-northeast during the next 12 to 24 hours.  On its anticipated track Delta will make landfall on the coast of Louisiana east of Cameron in a few hours.  Hurricane Delta will bring strong winds and heavy rain to parts of the area around Lake Charles that were affected by Hurricane Laura a few weeks ago.  Only temporary repairs have been made to numerous structures.  So, wind and rain damage will be greater than they would have been if all buildings were still intact.  Hurricane Delta will also cause a storm surge of 9 to 12 feet (3 to 4 meters) along the coast.  Locally heavy rain will cause flash floods in some locations.  Widespread power outages could also occur.

Delta Strengthens Back to a Major Hurricane

Hurricane Delta strengthened back to a major hurricane on Thursday afternoon.  At 5:00 p.m. EDT on Thursday the center of Hurricane Delta was located at latitude 24.8°N and longitude 93.4°W which put it about 345 miles (555 km) south of Cameron, Louisiana.  Delta was moving toward the northwest at 12 m.p.h. (19 km/h).  The maximum sustained wind speed was 115 m.p.h. (185 km/h) and there were wind gusts to 135 m.p.h. (220 km/h).  The minimum surface pressure was 959 mb.

A Hurricane Warning was in effect for the portion of the coast from High Island, Texas to Morgan City, Louisiana.  Tropical Storm Warnings were in effect for the portions of the coast from Sargent to High Island, Texas and from Morgan City, Louisiana to the Mouth of the Pearl River.  The Tropical Storm Warning includes New Orleans, Lake Pontchartrain and Lake Maurepas.

Hurricane Delta strengthened steadily on Thursday.  A circular eye with a diameter of 35 miles (55 km) formed at the center of Delta.  A ring of strong thunderstorms surrounded the eye and the strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms were revolving around the core of Hurricane Delta.  Storms near the core generated upper level divergence that pumped mass away from the hurricane.  The removal of mass allowed the surface pressure to decrease and the wind speed to increase.

The circulation around Hurricane Delta increased in size on Thursday.  Winds to hurricane force extended out 35 miles (55 km) from the center of circulation.  Winds to tropical storm force extended out 160 miles (260 km) from the center.  The Hurricane Intensity Index (HII) for Hurricane Delta was 20.6.  The Hurricane Size Index (HSI) was 12.7 and the Hurricane Wind Intensity Size Index (HWISI) was 33.3.  Delta was capable of causing regional major damage.

Hurricane Delta will move through an environment favorable for intensification during the next 12 to 18 hours.  Delta will move over water where the Sea Surface Temperature is near 29°C.  It will move through a region where the upper level winds are weak and there will be little vertical wind shear.  Hurricane Delta will continue to intensify in the short term and it could reach Category 4 on the Saffir-Simpson Scale.

Hurricane Delta will move around the western end of a high pressure system on Friday.  The high will steer Delta toward the north.  An upper level trough over the south central U.S. will turn Delta toward the north-northeast on Friday afternoon.  On its anticipated track Hurricane Delta will make landfall on the coast of Louisiana late on Friday afternoon or on Friday evening.

Hurricane Delta could hit the same area southeast of Lake Charles, Louisiana that was affected by Hurricane Laura.  Delta will bring strong winds and heavy rain to Louisiana.  It could cause a storm surge of 10 to 15 feet (3 to 5 meters) along the coast.  A number of structures in the region have temporary blue tarps in place of permanent roofs.  Hurricane Delta could cause more than the usually expected wind and rain damage in areas affected by Hurricane Laura.  There are also likely to be widespread power outages in the area.

Powerful Hurricane Laura Makes Landfall in Southwest Louisiana

Powerful Hurricane Laura made landfall in southwest Louisiana on Wednesday night.  At 2:00 a.m. EDT on Thursday the center of Hurricane Laura was located at latitude 29.8°N and longitude 93.3°W which put it about 30 miles (50 km) south-southwest of Lake Charles, Louisiana.  Laura was moving toward the north at 15 m.p.h. (24 km/h).  The maximum sustained wind speed was 150 m.p.h. (240 km/h) and there were wind gusts to 175 m.p.h. (280 km/h).  The minimum surface pressure was 938 mb.

A Hurricane Warning was in effect for the portion of the coast from High Island, Texas to Intracoastal City, Louisiana.  Tropical Storm Warnings were in effect for the portions of the coast from San Luis Pass to High Island, Texas and from Intracoastal City to the Mouth of the Mississippi River.

The center of Hurricane Laura officially made landfall near Cameron, Louisiana on Tuesday night.  Hurricane Laura was the strongest hurricane on record to make landfall on the coast of southwest Louisiana.  Laura was stronger than Hurricane Rita was when Rita made landfall in the same area in September 2005.  The Hurricane Intensity Index (HII) for Hurricane Laura was 31.6.  The Hurricane Size Index (HSI) was 19.6 and the Hurricane Wind Intensity Size Index (HWISI) was 51.2.  Hurricane Laura was capable of causing widespread extensive damage.

A NOAA National Ocean Service weather station at Calcasieu Pass measured a sustained wind speed of 93 m.p.h. (150 km/h) and a wind gust of 127 m.p.h. (204 km/h) during the passage of the northern eyewall.  The station also recorded a water rise of over 10 feet (3 meters).  The National Weather Service station at the Lake Charles airport measured a wind gust of 104 m.p.h. (167 km/h) during the passage of an inner rainband.  There were numerous reports of power outages.

Hurricane Laura will move inland over western Louisiana on Thursday.  The center of Laura will move over southern Arkansas by Thursday night.  Hurricane Laura will continue to cause a significant storm surge along the coast of Louisiana on Thursday morning.  Laura could produce hurricane force winds in Alexandria, Louisiana.  It could bring strong tropical storm force winds to Shreveport and Monroe.  Hurricane Laura will also drop heavy rain over Louisiana and parts of Arkansas.  Flash floods could occur in some locations.