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Henriette Weakens Back to a Tropical Storm

Former Hurricane Henriette weakened back to a tropical storm over the Central Pacific Ocean north of Hawaii on Tuesday.  At 11:00 a.m. EDT on Tuesday the center of Tropical Storm Henriette was located at latitude 32.8°N and longitude 161.6°W which put the center about 825 miles (1330 km) north-northwest of Honolulu, Hawaii.  Henriette was moving toward the northwest at 16 m.p.h. (26 km/h).  The maximum sustained wind speed was 70 m.p.h. (110 km/h) and there were wind gusts to 85 m.p.h. (135 km/h).  The minimum surface pressure was 994 mb.

Former Hurricane Henriette weakened back to a tropical storm over the Central Pacific Ocean north of Hawaii on Tuesday.  Henriette moved into a region of drier air that is northwest of Hawaii.  The drier air was pulled around the southern side of Tropical Storm Henriette.  The drier air affect the structure of Henriette.

Thunderstorms were still occurring near the center of Tropical Storm Henriette.  Thunderstorms were also still occurring in bands in the eastern and northern sides of Henriette’s circulation.  Bands in the southern and western sides of Tropical Storm Henriette consisted primarily of showers and lower clouds.

The circulation around Tropical Storm Henriette was small.  Winds to tropical storm force extended out 80 miles (130 km) from the center of Henriette’s circulation.

Tropical Storm Henriette will move through an environment that will become more unfavorable for intensification during the next 24 hours.  Henriette will move over water where the Sea Surface Temperatures are near 26°C.  It will move under the eastern side of an upper level low that is northwest of Hawaii.  The upper level low will produce southerly winds that will blow toward the top of Henriette’s circulation.  Those winds will cause the vertical wind shear to increase.  In addition, Henriette will continue to move through the region of drier air northwest of Hawaii.  More vertical wind shear and the effects of the drier will cause Tropical Storm Henriette to continue to weaken during the next 24 hours.

Tropical Storm Henriette will move around the southwestern part of a high pressure system over the central North Pacific Ocean.  The high pressure system will steer Henriette toward the northwest during the next 24 hours.  On its anticipated track, Tropical Storm Henriette will continue to move farther away from Hawaii.

Hurricane Henriette Moves North of Hawaii

Hurricane Henriette moved north of Hawaii on Monday.  At 5:00 p.m. EDT on Monday the center of Hurricane Henriette was located at latitude 29.8°N and longitude 157.8°W which put the center about 585 miles (945 km) north of Honolulu, Hawaii.  Henriette was moving toward the northwest at 18 m.p.h. (30 km/h).  The maximum sustained wind speed was 85 m.p.h. (135 km/h) and there were wind gusts to 100 m.p.h. (160 km/h).  The minimum surface pressure was 986 mb.

Hurricane Henriette strengthened slightly as it moved north of Hawaii on Monday.  A small clear area appeared intermittently at the center of Henriette’s circulation.  The clear area could be evidence that an eye may form at the center of Hurricane Henriette.  The clear area was surrounded by a ring of thunderstorms and the strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms were revolving around the center of Henriette’s circulation.  Storms near the center of Henriette generated upper level divergence that pumped mass away from the hurricane.

The circulation around Hurricane Henriette was small.  Winds to tropical storm force extended out 20 miles (30 km) from the center of Henriette’s circulation.  Winds to tropical storm force extended out 70 miles (110 km) from the center of Hurricane Henriette.

Hurricane Henriette will move through an environment mostly favorable for intensification during the next 24 hours.  Henriette will move over water where the Sea Surface Temperatures are near 26°C.  It will move under the eastern side of an upper level low that is northwest of Hawaii.  Henriette will move north of a smaller upper level low that is north of Hawaii.  The upper level winds are weak in the zone between the two upper level lows and there will be little vertical wind shear.  Hurricane Henriette could intensify during the next 24 hours.  The upper level winds will get stronger when Henriette moves closer to the upper level low northwest of Hawaii later on Tuesday.  Henriette could start to weaken by Tuesday night.

Hurricane Henriette will move around the southwestern part of a high pressure system over the central North Pacific Ocean.  The high pressure system will steer Henriette toward the northwest during the next 24 hours.  On its anticipated track, Hurricane Henriette will move farther away from Hawaii.

Henriette Rapidly Intensifies to a Hurricane

Former Tropical Storm Henriette rapidly intensified to a hurricane northeast of Hawaii on Sunday.  At 5:00 p.m. EDT on Sunday the center of Hurricane Henriette was located at latitude 25.7°N and longitude 152.5°W which put the center about 455 miles (735 km) northeast of Honolulu, Hawaii.  Henriette was moving toward the northwest at 17 m.p.h. (28 km/h).  The maximum sustained wind speed was 80 m.p.h. (130 km/h) and there were wind gusts to 100 m.p.h. (160 km/h).  The minimum surface pressure was 990 mb.

Former Tropical Storm Henriette rapidly intensified to a hurricane northeast of Hawaii on Sunday.  The inner end of a rainband wrapped around the center of Henriette’s circulation.  A circular eye with a diameter of 15 miles (24 km) formed at the center of Hurricane Henriette.  The eye was surrounded by a ring of thunderstorms and the strongest winds were occurring in that rings of storms.  Bands of showers and thunderstorms were revolving around the center of Henriette’s circulation.  Storms near the center of Henriette generated upper level divergence that pumped mass away from the hurricane.  The removal of mass caused the surface pressure to decrease.

The circulation around Hurricane Henriette was small.  Winds to hurricane force extended out 20 miles (30 km) from the center of Henriette’s circulation.  Winds to tropical storm force extended out 70 miles (110 km) from the center of Hurricane Henriette.

Hurricane Henriette will move through an environment favorable for intensification during the next 24 hours.  Henriette will move over water where the Sea Surface Temperatures are near 26°C.  It will move under the middle of an upper level trough that is east of Hawaii.  The upper level winds are weak near the middle of the trough and there will be little vertical wind shear. Hurricane Henriette will intensify during the next 24 hours.  Henriette could continue to intensify rapidly.

Hurricane Henriette will move around the southwestern part of a high pressure system over the central North Pacific Ocean.  The high pressure system will steer Henriette toward the northwest during the next 24 hours.  On its anticipated track, Hurricane Henriette will pass well to the north of Hawaii.

Elsewhere, Tropical Storm Ivo continued to churn west of Baja California. At 5:00 p.m. EDT on Sunday the center of Tropical Storm Ivo was located at latitude 22.1°N and longitude 117.2°W which put the center about 470 miles (755 km) west of the southern tip of Baja California.  Ivo was moving toward the west-northwest at 12 m.p.h. (19 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 1006 mb.

Tropical Storm Henriette Passes Northeast of Hawaii

Tropical Storm Henriette was passing northeast of Hawaii on Sunday.  At 5:00 a.m. EDT on Sunday the center of Tropical Storm Henriette was located at latitude 23.8°N and longitude 150.3°W which put the center about 420 miles (675 km) northeast Hilo, Hawaii.  Henriette was moving toward the northwest at 15 m.p.h. (24 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 1006 mb.

Former Tropical Storm Henriette strengthened back to a tropical storm as it moved northeast of Hawaii on Sunday.  More thunderstorms former near the center of Henriette’s circulation.  The inner end of a rainband wrapped much of the way around the center of Tropical Storm Henriette.  A clear area was forming at the center of Henriette.  Storms near the center of Henriette generated upper level divergence that pumped mass away from the tropical storm.

The circulation around Tropical Storm Henriette was small.  Winds to tropical storm force extended out 105 miles (165 km) from the center of Henriette’s circulation.

Tropical Storm Henriette will move through an environment favorable for intensification during the next 24 hours.  Henriette will move over water where the Sea Surface Temperatures are near 26°C.  It will move under the middle of an upper level trough that is east of Hawaii.  The upper level winds are weak near the middle of the trough and there will be little vertical wind shear.  Tropical Storm Henriette will intensify during the next 24 hours.

Tropical Storm Henriette will move around the southwestern part of a high pressure system over the Eastern North Pacific Ocean.  The high pressure system will steer Henriette toward the northwest during the next 24 hours.  On its anticipated track, Tropical Storm Henriette will pass well to the north of Hawaii.

Elsewhere, Tropical Storm Ivo was weakening southwest of Baja California.  At 5:00 a.m. EDT on Sunday the center of Tropical Storm Ivo was located at latitude 21.5°N and longitude 114.9°W which put the center about 335 miles (535 km) west-southwest of the southern tip of Baja California.  Ivo was moving toward the west-northwest at 8 m.p.h. (13 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 1006 mb.

Tropical Storm Ivo Moves Southeast of Baja California

Tropical Storm Ivo moved southeast of Baja California on Thursday evening.  At 5:00 p.m. EDT on Thursday the center of Tropical Storm Ivo was located at latitude 19.7°N and longitude 107.3°W which put the center about 275 miles (445 km) southeast of the southern tip of Baja California.  Ivo was moving toward the northwest at 22 m.p.h. (35 km/h).  The maximum sustained wind speed was 60 m.p.h. (95 km/h) and there were wind gusts to 75 m.p.h. (120 km/h).  The minimum surface pressure was 1001 mb.

Even though Tropical Storm Ivo strengthened on Thursday, its structure did not change a lot.  Thunderstorms were still forming near the center of Ivo’s circulation.  Thunderstorms were also occurring in bands in the southern and eastern parts of Tropical Storm Ivo.  Bands in the northern and western parts of Ivo’s circulation consisted primarily of showers and lower clouds.

The circulation around Tropical Storm Ivo was small.  Winds to tropical storm force extended out 45 miles (75 km) from the center of Ivo’s circulation.

Tropical Storm Ivo will move through an environment mostly favorable for intensification during the next 24 hours.  Ivo will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the southern side of an upper level ridge over Mexico.  The upper level ridge will produce easterly winds that will blow toward the top of Ivo’s circulation.  However, the winds in the lower atmosphere will also blow from the east.  Since the winds in the upper and lower levels of the atmosphere will blow from the same direction, there will be less vertical wind shear.  Even though Tropical Storm Ivo will move through an environment most favorable for intensification, Ivo may not intensify a lot on Friday as long as it continues to move quickly toward the west-northwest.  If Tropical Storm Ivo starts to move more slowly, then it could intensify again.

Tropical Storm Ivo will move around the southern side of a high pressure system that is over Mexico.  The high pressure system will steer Ivo toward the west-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Ivo will move south of Baja California on Friday.

Elsewhere over the Eastern North Pacific Ocean, Tropical Storm Henriette weakened slowly as it approached the Central Pacific.  At 5:00 p.m. EDT on Thursday the center of Tropical Storm Henriette was located at latitude 19.1°N and longitude 138.4°W which put the center about 1090 miles (1750 km) east Hilo, Hawaii.  Henriette was moving toward the west at 16 m.p.h. (26 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 1007 mb.

Tropical Storm Ivo Forms South of Mexico

Tropical Storm Ivo formed over the Eastern North Pacific Ocean on Wednesday afternoon.  At 5:00 p.m. EDT on Wednesday the center of Tropical Storm Ivo was located at latitude 14.2°N and longitude 99.1°W which put the center about 195 miles (310 km) south-southeast Acapulco, Mexico.  Ivo was moving toward the west-northwest at 22 m.p.h. (35 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 1008 mb.

A low pressure system over the Eastern North Pacific Ocean south of Mexico strengthened on Wednesday afternoon and the U.S. National Hurricane Center designated the system as Tropical Storm Ivo.

The circulation around Tropical Storm Ivo organized quickly on Wednesday afternoon.  Thunderstorms developed near the center of Ivo’s circulation.  Thunderstorms also formed in bands revolving around the center of Tropical Storm Ivo.  Storms near the center of Ivo began to generate upper level divergence that pumped mass away from the tropical storm.

The circulation around Tropical Storm Ivo was small.  Winds to tropical storm force extended out 25 miles (40 km) in the northern side of Ivo’s circulation.  The winds in the southern side of Tropical Storm Ivo were blowing at less than tropical storm force.

Tropical Storm Ivo will move through an environment mostly favorable for intensification during the next 24 hours.  Ivo will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the southern side of an upper level ridge over Mexico.  The upper level ridge will produce easterly winds that will blow toward the top of Ivo’s circulation.  However, the winds in the lower atmosphere will also blow from the east.  Since the winds in the upper and lower levels of the atmosphere will blow from the same direction, there will be less vertical wind shear.  Tropical Storm Ivo is likely to strengthen during the next 24 hours.

Tropical Storm Ivo will move around the southern side of a high pressure system that is over Mexico.  The high pressure system will steer Ivo toward the west-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Ivo will move parallel to the coast of southern Mexico.

Bands in the northern side of Ivo’s circulation could drop heavy rain on parts of southern Mexico.  Heavy rain could cause flash floods in Guerrero, Michoacan, and Colima.

Elsewhere over the Eastern North Pacific Ocean, Tropical Storm Henriette continued to churn toward the Central Pacific.  At 5:00 p.m. EDT on Wednesday the center of Tropical Storm Henriette was located at latitude 18.1°N and longitude 131.3°W which put the center about 1555 miles (2505 km) east Hilo, Hawaii.  Henriette was moving toward the west at 16 m.p.h. (26 km/h).  The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 65 m.p.h. (105 km/h).  The minimum surface pressure was 1005 mb.

Tropical Storm Henriette Churns Westward

Tropical Storm Henriette churned westward over the Eastern North Pacific Ocean on Tuesday.  At 5:00 p.m. EDT on Tuesday the center of Tropical Storm Henriette was located at latitude 17.0°N and longitude 125.6°W which put the center about 1095 miles (1765 km) west-southwest of the southern tip of Baja California.  Henriette was moving toward the west-northwest at 16 m.p.h. (26 km/h).  The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 65 m.p.h. (105 km/h).  The minimum surface pressure was 1003 mb.

The structure of Tropical Storm Henriette did not change much on Tuesday.  The distribution of thunderstorms in Tropical Storm Henriette continued to be asymmetrical.  Thunderstorms were occurring in bands in the western side of Henriette’s circulation.  Bands in the eastern side of Tropical Storm Henriette consisted primarily of showers and lower clouds.  Storms on the western side of the center of Henriette generated upper level divergence that pumped mass away to the west of the tropical storm.  The removal of mass in the upper levels was balanced by an inflow of mass in the lower levels of the atmosphere.  The balance of outflow and inflow of mass caused the surface pressure to remain nearly constant.

The size of the circulation around Tropical Storm Henriette increased a little on Tuesday.  Winds to tropical storm force extended out 70 miles (110 km) from the center of Henriette’s circulation.

Tropical Storm Henriette will move through an environment marginally favorable for intensification during the next 24 hours.  Henriette will move over water where the Sea Surface Temperatures are near 26°C.  It will move under the southern side of an upper level ridge over the Eastern North Pacific Ocean.  The upper level ridge will produce easterly winds that will blow toward the top of Henriette’s circulation.  Those winds will cause some vertical wind shear. The vertical wind shear will inhibit intensification.  The intensity of Tropical Storm Henriette is likely to remain nearly constant during the next 24 hours.

Tropical Storm Henriette will move around the southern side of a high pressure system over the Eastern North Pacific Ocean.  The high pressure system will steer Henriette toward the west-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Henriette will continue to move farther away from Baja California.

Tropical Storm Henriette Forms Southwest of Baja California

Tropical Storm Henriette formed over the Eastern North Pacific Ocean southwest of Baja California on Monday afternoon.  At 5:00 p.m. EDT on Monday the center of Tropical Storm Henriette was located at latitude 14.8°N and longitude 120.6°W which put the center about 895 miles (1440 km) southwest of the southern tip of Baja California.  Henriette was moving toward the west-northwest at 15 m.p.h. (24 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 low pressure system over the Eastern North Pacific Ocean southwest of Baja California strengthened on Monday afternoon and the U.S. National Hurricane Center designated the system as Tropical Storm Henriette.

The distribution of thunderstorms in Tropical Storm Henriette was asymmetrical.  Thunderstorms were occurring in bands in the western side of Henriette’s circulation.  Bands in the eastern side of Tropical Storm Henriette consisted primarily of showers and lower clouds.  Storms near the center of Henriette generated upper level divergence that pumped mass away to the west of the tropical storm.  The removal of mass caused the surface pressure to decrease.

The circulation around Tropical Storm Henriette was small.  Winds to tropical storm force extended out 45 miles (75 km) from the center of Henriette’s circulation.

Tropical Storm Henriette will move through an environment somewhat favorable for intensification during the next 24 hours.  Henriette will move over water where the Sea Surface Temperatures are near 27°C.  It will move under the southern side of an upper level ridge over the Eastern North Pacific Ocean.  The upper level ridge will produce easterly winds that will blow toward the top of Henriette’s circulation.  Those winds will cause some vertical wind shear.  The vertical wind shear will inhibit intensification, but the wind shear will not be enough to prevent intensification.  Tropical Storm Henriette will intensify during the next 24 hours.

Tropical Storm Henriette will move around the southern side of a high pressure system over the Eastern North Pacific Ocean.  The high pressure system will steer Henriette toward the west-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Henriette will move farther away from Baja California.

 

Gilma Weakens to a Tropical Storm

Former Hurricane Gilma weakened to a tropical storm over the Central Pacific Ocean east of Hawaii on Tuesday.  At 5:00 p.m. EDT on Tuesday the center of Tropical Storm Gilma was located at latitude 18.5°N and longitude 142.1°W which put the center about 850 miles (1370 km) east of Hilo, Hawaii.  Gilma was moving toward the west at 15 m.p.h. (24 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 996 mb.

Former Hurricane Gilma ran into strong westerly winds associated with an upper level low west of California.  Those winds effectively sheared the tops off of most of the thunderstorms in Gilma’s circulation.  The strong vertical wind shear caused former Hurricane Gilma to weaken rapidly on Tuesday.  For a time the circulation around Tropical Storm Gilma consisted primarily of bands of showers and lower clouds.  New thunderstorms began to develop in bands in the eastern side of Gilma’s circulation on Tuesday afternoon.

The small size of the circulation around former Hurricane Gilma contributed to the rapid weakening that occurred when the wind shear increased.  Winds to tropical storm force extended out 70 miles (110 km) from the center of Tropical Storm Gilma.

Tropical Storm Gilma will move through an environment that will be unfavorable for intensification during the next 24 hours.  Gilma will move over water where the Sea Surface Temperatures are near 25°C.  The upper level low west of California will continue to produce westerly winds that will blow toward the top of Gilma’s circulation.  Those winds will cause moderately strong vertical wind shear.  Tropical Storm Gilma is likely to continue to weaken during the next 24 hours.

Tropical Storm Gilma will move around the southern side of a subtropical high pressure system over the Eastern and Central North Pacific Ocean.  The high pressure system will steer Gilma toward the west-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Gilma will move closer to Hawaii.

Elsewhere, Tropical Storm Hone continued to move farther from Hawaii and Tropical Storm Hector continued to move westward over the Eastern North Pacific Ocean.

At 5:00 p.m. EDT on Tuesday the center of Tropical Storm Hone was located at latitude 20.1°N and longitude 166.1°W which put the center about 450 miles (725 km) west-southwest of Lihue, Hawaii.  Hone was moving toward the west-northwest at 12 m.p.h. (19 km/h).  The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 65 m.p.h. (105 km/h).  The minimum surface pressure was 1002 mb.

At 5:00 p.m. EDT on Tuesday the center of Tropical Storm Hector was located at latitude 17.8°N and longitude 129.8°W which put the center about 1335 miles (2145 km) west-southwest of the southern tip of Baja California.  Hector was moving toward the west-northwest at 12 m.p.h. (19 km/h).  The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 65 m.p.h. (105 km/h).  The minimum surface pressure was 1002 mb.

 

 

 

Hurricane Gilma Churns Westward

Hurricane Gilma continued to churn west toward the Central Pacific Ocean on Monday.  At 5:00 p.m. EDT on Monday the center of Hurricane Gilma was located at latitude 18.4°N and longitude 137.4°W which put the center about 1160 miles (2865 km) east of Hilo, Hawaii.  Gilma was moving toward the west at 8 m.p.h. (13 km/h).  The maximum sustained wind speed was 110 m.p.h. (175 km/h) and there were wind gusts to 130 m.p.h. (210 km/h).  The minimum surface pressure was 968 mb.

Hurricane Gilma maintained its intensity on Monday as it churned west toward the Central Pacific.  The circulation around Hurricane Gilma was very symmetrical and it exhibited a structure sometimes called an annular hurricane.  A circular eye was present at the center of Gilma’s circulation.  A ring of thunderstorms surrounded the eye and the strongest winds were occurring in that ring of storms.  A several short bands of showers and thunderstorms were revolving around the core of Hurricane Gilma.  Storms near the core of Gilma generated upper level divergence that pumped mass away from the hurricane.  The divergence of mass in the upper levels of the atmosphere was nearly balanced by the inflow of mass in the lower levels.  The balance of mass caused the surface pressure to remain nearly steady.

The circulation around Hurricane Gilma was small.  Winds to hurricane force extended out 20 miles (30 km) from the center of Gilma’s circulation.  Winds to tropical storm force extended out 80 miles (130 km) from the center of Hurricane Gilma.

Hurricane Gilma will move through an environment that will be marginal for intensification during the next 24 hours.  Gilma will move over water where the Sea Surface Temperatures are near 26°C.  It will move under the axis of an upper level ridge over the Eastern and Central North Pacific.  The upper level winds are weak near the axis of the ridge.  Hurricane Gilma is likely to maintain its intensity on Tuesday unless the vertical wind shear increases.  Since the circulation around Gilma is small, if the wind shear increases, Hurricane Gilma could start to weaken.

Hurricane Gilma will move around the southern side of a subtropical high pressure system over the Eastern and Central North Pacific Ocean.  The high pressure system will steer Gilma toward the west-northwest during the next 24 hours.  On its anticipated track, Hurricane Gilma will move closer to Hawaii.

Elsewhere, Tropical Storm Hone moved farther away to the southwest of Hawaii and Tropical Storm Hector moved westward over the Eastern North Pacific Ocean.

At 5:00 p.m. EDT on Monday the center of Tropical Storm Hone was located at latitude 19.2°N and longitude 161.6°W which put the center about 240 miles (385 km) south-southwest of Lihue, Hawaii.  Hone was moving toward the west at 13 m.p.h. (20 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 998 mb.

At 5:00 p.m. EDT on Sunday the center of Tropical Storm Hector was located at latitude 16.5°N and longitude 125.8°W which put the center about 1125 miles (1805 km) west-southwest of the southern tip of Baja California.  Hector was moving toward the west-northwest at 10 m.p.h. (16 km/h).  The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 65 m.p.h. (105 km/h).  The minimum surface pressure was 998 mb.