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Hurricane Genevieve Intensifies to Cat. 5

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Hurricane Genevieve intensified to Category 5 on the Saffir-Simpson Scale on Sunday night as it moved over the Eastern North Pacific Ocean south of Baja California.  At 5:00 a.m. EDT on Monday the center of Hurricane Genevieve was located at latitude 15.5°N and longitude 112.2°W which put the center about 530 miles (855 km) south-southwest of southern tip of Baja California.  Genevieve was moving toward the northwest at 13 m.p.h. (21 km/h).  The maximum sustained wind speed was 160 m.p.h. (260 km/h) and there were wind gusts to 190 m.p.h. (305 km/h).  The minimum surface pressure was 925 mb.

Hurricane Genevieve intensified to Category 5 on Sunday night.  A circular eye with a diameter of 23 miles (37 km) was at the center of Genevieve’s circulation.  The eye 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 core of Genevieve’s circulation.  Storms near the core of Genevieve generated strong upper level divergence that pumped large amounts of mass away from the hurricane.  The removal of large amounts of mass caused the surface pressure to decrease rapidly.

The distribution of wind speeds in Hurricane Genevieve became more symmetrical on Sunday night.  Winds to hurricane force extended out 45 miles (75 km) from the center of Genevieve’s circulation.  Winds to tropical storm force extended out 195 miles (315 km) from the center of Hurricane Genevieve.

The Hurricane Intensity Index (HII) for Hurricane Genevieve was 35.0.  The Hurricane Size Index (HII) was 16.5 and the Hurricane Wind Intensity Size Index (HWISI) was 51.5.  Hurricane Genevieve was similar in size and intensity to Hurricane Michael when Michael hit Northwest Florida in 2018.

Hurricane Genevieve will move into an environment that will become slighyly less favorable for an intense hurricane during the next 24 hours.  Genevieve will move over water where the Sea Surface Temperatures are near 28°C.  It will move through a region where the upper level winds are weak and there will be little vertical wind shear.  However, Genevieve will start to move into a region where the air is a little drier later today.  Hurricane Genevieve is likely to start to weaken when it moves into the region of drier air.

Hurricane Genevieve will move around the southwestern part of a high pressure system that is over the Southwest U.S.  The high pressure system will steer Genevieve toward the northwest during the next 24 hours. On its anticipated track, Hurricane Genevieve will move parallel to the coast of Baja California.

Elsewhere, Hurricane Fausto continued to weaken slowly as it moved over the Central North Pacific Ocean east of Hawaii.  At 5:00 a.m. EDT on Monday the center of Hurricane Fausto was located at latitude 20.4°N and longitude 144.8°W which put the center about 670 miles (1080 km) east of Hilo, Hawaii.  Fausto was moving toward the west-northwes at 14 m.p.h. (24 km/h).  The maximum sustained wind speed was 80 m.p.h. (130 km/h) and there were wind gusts to 95 m.p.h. (150 km/h).  The minimum surface pressure was 988 mb.

Genevieve Rapidly Intensifies to a Major Hurricane

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Hurricane Genevieve rapidly intensified to a major hurricane over the Eastern North Pacific Ocean southwest of Mexico on Sunday morning.  At 11:00 a.m. EDT on Sunday the center of Hurricane Genevieve was located at latitude 13.4°N and longitude 109.4°W which put the center about 515 miles (825 km) southwest of Manzanillo, Mexico.  Genevieve was moving toward the west-northwest at 16 m.p.h. (26 km/h).  The maximum sustained wind speed was 120 m.p.h. (195 km/h) and there were wind gusts to 140 m.p.h. (220 km/h).  The minimum surface pressure was 963 mb.

A circular eye with a diameter of 20 miles (32 km) formed at the center of Hurricane Genevieve.  The eye 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 core of Genevieve’s circulation.  Storms near the core of Genevieve generated strong upper level divergence that pumped large amounts of mass away from the hurricane.  The removal of large amounts of mass caused the surface pressure to decrease rapidly.

Winds to hurricane force extended out 45 miles (75 km) in the northern side of Hurricane Genevieve.  Winds to hurricane force extended out 15 miles (25 km) in the southern side of Genevieve’s circulation.  Winds to tropical storm force extended out 195 miles (315 km) from the center of Hurricane Genevieve.

Hurricane Genevieve will move through an environment favorable for intensification during the next 24 hours.  Genevieve will move over water where the Sea Surface Temperatures are 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 Genevieve will intensify during the next 24 hours.  Genevieve could continue to intensify rapidly during the next few hours.   Hurricane Genevieve could strengthen to a Category 5 hurricane on the Saffir-Simpson Scale.

Hurricane Genevieve will move around the southwestern part of a high pressure system that is over the Southwest U.S.  The high pressure system will steer Genevieve toward the northwest during the next 24 hours.  On its anticipated track, Hurricane Genevieve will move parallel to the west coast of Mexico.

Elsewhere, Hurricane Fausto was weakening slowly as it moved over the Central North Pacific Ocean.  At 11:00 a.m. EDT on Sunday the center of Hurricane Fausto was located at latitude 19.9°N and longitude 141.1°W which put the center about 910 miles (1465 km) east of Hilo, Hawaii.  Fausto was moving toward the west at 14 m.p.h. (24 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 977 mb.

Genevieve Strengthens to a Hurricane

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Former Tropical Storm Genevieve strengthened to a hurricane over the Eastern North Pacific Ocean southwest of Mexico on Saturday.  At 11:00 p.m. EDT on Saturday the center of Hurricane Genevieve was located at latitude 12.1°N and longitude 106.7°W which put the center about 500 miles (810 km) south-southwest of Manzanillo, Mexico.  Genevieve was moving toward the west-northwest at 15 m.p.h. (24 km/h).  The maximum sustained wind speed was 80 m.p.h. (130 km/h) and there were wind gusts to 95 m.p.h. (150 km/h).  The minimum surface pressure was 987 mb.

Former Tropical Storm Genevieve strengthened to a hurricane on Saturday.  The inner end of a rainband wrapped around the eastern and northern sides of the center of Genevieve’s circulation.  An eye appeared to be forming at the center of Hurricane Genevieve.  Bands of showers and thunderstorms were revolving around the center of Genevieve’s circulation.  Storms near the center of Genevieve generated upper level divergence that pumped mass away from the hurricane.  The removal of mass caused the surface pressure to decrease.

The strongest winds were occurring in the section of the rainband that wrapped around the northeastern part of the center of Hurricane Genevieve.  Winds to hurricane force extended out 20 miles in the northeastern quadrant of Genevieve’s circulation.  Winds to tropical storm force extended out 125 miles (200 km) from the center of Hurricane Genevieve.

Hurricane Genevieve will move through an environment favorable for intensification during the next 24 hours.  Genevieve will move over water where the Sea Surface Temperatures are 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 Genevieve will intensify during the next 24 hours.  Genevieve could intensify rapidly at times.  Genevieve is likely to strengthen to a major hurricane by early next week.

Hurricane Genevieve will move around the southwestern part of a high pressure system that is over the Southwest U.S.  The high pressure system will steer Genevieve toward the northwest during the next 24 hours.  On its anticipated track, Hurricane Genevieve will move parallel to the west coast of Mexico.

Elsewhere, Hurricane Fausto was nearing the Central Pacific Ocean.  At 11:00 p.m. EDT on Saturday the center of Hurricane Fausto was located at latitude 19.5°N and longitude 138.8°W which put the center about 1060 miles (1702 km) east of Hilo, Hawaii.  Fausto was moving toward the west at 13 m.p.h. (21 km/h).  The maximum sustained wind speed was 100 m.p.h. (160 km/h) and there were wind gusts to 120 m.p.h. (195 km/h).  The minimum surface pressure was 971 mb.

 

Hurricane Fausto Strengthens a Little More

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Hurricane Fausto strengthened a little more on Friday morning as it moved toward the Central Pacific Ocean.  At 11:00 a.m. EDT on Friday the center of Hurricane Fausto was located at latitude 18.6°N and longitude 131.2°W which put the center about 1560 miles (2510 km) east of Hilo, Hawaii.  Fausto was moving toward the west at 16 m.p.h. (26 km/h).  The maximum sustained wind speed was 105 m.p.h. (165 km/h) and there were wind gusts to 125 m.p.h. (200 km/h).  The minimum surface pressure was 967 mb.

Hurricane Fausto continued to strengthen early on Friday.  A circular eye with a diameter of 17 miles (28 km) was at the center of Fausto’s circulation.  The eye 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 Fausto’ circulation.  Storms near the center of Fausto generated more upper level divergence that pumped more mass away from the hurricane.  The removal of more mass caused the surface pressure to decrease.

The distribution of wind speeds around Hurricane Fausto became more symmetrical on Friday.  Winds to hurricane force extended out 45 miles (75 km) from the center of Fausto’s circulation.  Winds to tropical storm force extended out 185 miles (295 km) from the center of Hurricane Fausto.

Hurricane Fausto will move into an environment that will become unfavorable for intensification during the next 24 hours.  Fausto will move over water where the Sea Surface Temperatures are near 26°C.  It will move under the middle of an upper level ridge that is southwest of Mexico.  The upper level winds are weak near the middle of the ridge and there will be little vertical wind shear.  There is drier air just to the north and west of Hurricane Fausto.  The drier air is likely to inhibit the development of new thunderstorms in bands in the northern and western parts of Fausto’s circulation.  Hurricane Fausto is likely to weaken during the next 24 hours because of the effects of the drier air.

Hurricane Fausto will move around the southern part of a high pressure system that is over the Eastern North Pacific Ocean.  The high pressure system will steer Fausto toward the west during the next 24 hours.  On its anticipated track, Hurricane Fausto will continue to move toward the Central Pacific Ocean.  Fausto could be near the Hawaiian Islands by the middle of next week.

Elsewhere over the Eastern North Pacific Ocean, Tropical Depression Seven-E formed south of Mexico.  At 11:00 a.m. EDT on Friday the center of Tropical Depression Seven-E was located at latitude 9.0°N and longitude 100.5°W which put the center about 605 miles (975 km) south of Zihuatanejo, Mexico.  The tropical depression was moving toward the west-northwest at 12 m.p.h. (19 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 1005 mb.

Gil Weakens Back to a Tropical Storm

Former Hurricane Gil weakened back to a tropical storm on Saturday over the Eastern North Pacific Ocean east of Hawaii.  At 11:00 p.m. EDT on Saturday the center of Tropical Storm Gil was located at latitude 19.5°N and longitude 132.0°W which put the center about 1500 miles (2415 km) east of Hilo, Hawaii.  Gil was moving toward the west-northwest at 21 m.p.h. (33 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 997 mb.

Former Hurricane Gil weakened back to a tropical storm on Saturday when it moved over cooler water.  Many of the thunderstorms in the western side of Gil’s circulation weakened when it moved over cooler water.  Thunderstorms were still occurring in bands in the eastern side of Tropical Storm Gil.  The thunderstorms in the eastern side of Gil’s circulation still generated upper level divergence that pumped mass away from the tropical storm.  The removal of mass meant that Tropical Storm Gil weakened slowly.

The distribution of wind speeds in Tropical Storm Gil was relatively symmetrical.  Winds to tropical storm force extended out 140 miles (225 km) from the center of Gil’s circulation.

Tropical Storm Gil will move through an environment mostly unfavorable for intensification during the next 24 hours.  Gil will move over water where the Sea Surface Temperatures are near 24°C.  It will move through a region where there will be little vertical wind shear.  Even though Tropical Storm Gil will move through a region where there will be little vertical wind shear, Gil is likely to continue to weaken because of the cooler water.

Tropical Storm Gil will move around the southern side of a high pressure system over the Eastern North Pacific Ocean.  The high pressure system will steer Gil toward the west-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Gil will move toward Hawaii as it weakens.

Gil Strengthens to a Hurricane

Former Tropical Storm Gil strengthened to a hurricane over the Eastern North Pacific Ocean southwest of Baja California on Friday.  At 11:00 p.m. EDT on Friday the center of Hurricane Gil was located at latitude 16.5°N and longitude 125.1°W which put the center about 1080 miles (1740 km) west-southwest of the southern tip of Baja California.  Gil was moving toward the west-northwest at 20 m.p.h. (32 km/h).  The maximum sustained wind speed was 75 m.p.h. (120 km/h) and there were wind gusts to 90 m.p.h. (145 km/h).  The minimum surface pressure was 991 mb.

Former Tropical Storm Gil strengthened to a hurricane on Friday.  The inner end of a rainband wrapped around the western and southern sides of the center of Gil’s circulation.  Bands of showers and thunderstorms were revolving around the center of Hurricane Gil.  Storms near the center of Gil generated upper level divergence that pumped mass away from the hurricane.  The removal of mass caused the surface pressure to decrease.

The strongest winds were occurring in the northeastern part of Hurricane Gil.  Winds to hurricane force extended out 25 miles (40 km) in the northeastern quadrant of Gil’s circulation.  Winds to tropical storm force extended out 125 miles (200 km) from the center of Hurricane Gil.

Hurricane Gil will move through an environment somewhat favorable for intensification during the next 24 hours.  Gil will move over water where the Sea Surface Temperatures are near 27°C.  It will move through a region where there will be little vertical wind shear.  However, Gil will move into a region where there is very dry air.  The dry air will inhibit intensification.  Hurricane Gil could intensify during the next 24 hours if the dry air does not penetrate to the core of Gil’s circulation.

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

Elsewhere, former Tropical Storm Iona weakened to a tropical depression as it approached the International Date Line.  At 11:00 p.m. EDT on Friday the center of Tropical Depression Iona was located at latitude 15.8°N and longitude 179.5°W which put the center about 1465 miles (2355 km) west of Honolulu, Hawaii.  Iona was moving toward the west-northwest at 17 m.p.h. (28 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 1008 mb.

Gilma Weakens East of Hawaii

Former Tropical Storm Gilma weakened east of Hawaii on Thursday.  At 5:00 p.m. EDT on Thursday the center of Tropical Depression Gilma was located at latitude 20.3°N and longitude 151.7°W which put the center about 225 miles (360 km) east of Hilo, Hawaii.  Gilma was moving toward the west-northwest at 12 m.p.h. (19 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 1010 mb.

An upper level low west of California was producing strong southwesterly winds that blew toward the top of former Tropical Storm Gilma.  Those winds caused strong vertical wind shear.  The strong wind shear blew the middle and upper parts of Gilma;s circulation to the northeast of the lower portion of the circulation.

The lower portion of the circulation around Tropical Depression Gilma consisted primarily of bands of showers and low clouds.  Thunderstorms were still being produced in the middle level circulation which was northeast of the low level center of Gilma.

Tropical Depression 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 24°C.  The upper level low west of California will continue to produce southwesterly winds that will blow toward the top of Gilma’s circulation.  Those winds will cause strong vertical wind shear.  Tropical Depression Gilma is likely to continue to weaken during the next 24 hours.

Tropical Depression 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 Depression Gilma pass just north of Hawaii on Friday.

The circulation in the western side of Tropical Depression Gilma could enhance the northeasterly trade winds.  Stronger trade winds could cause more rain to fall on the northeastern slopes of the Hawaiian Islands.

Elsewhere, Tropical Storm Hone was spinning southeast of Midway Island.  At 5:00 p.m. EDT on Thursday the center of Tropical Storm Hone was located at latitude 21.4°N and longitude 172.4°W which put the center about 565 miles (910 km) southeast of Midway Island.  Hone was moving toward the west-northwest at 7 m.p.h. (11 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.

 

 

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.

 

Hurricane Hone Brings Wind and Rain to Hawaii

Hurricane Hone brought wind and rain to Hawaii on Sunday.  At 11:00 p.m. EDT on Sunday the center of Hurricane Hone was located at latitude 19.1°N and longitude 158.6°W which put the center about 160 miles (260 km) south-southwest of Honolulu, Hawaii.  Hone was moving toward the west at 13 m.p.h. (20 km/h).  The maximum sustained wind speed was 75 m.p.h. (120 km/h) and there were wind gusts to 90 m.p.h. (145 km/h).  The minimum surface pressure was 994 mb.

Bands in the northern side of Hurricane Hone brought wind and rain to the Big Island of Hawaii on Sunday.  A weather station at Bradshaw Army Airfield (PHSF) measured a sustained wind speed of 35 m.p.h. (56 km/h) and a wind gust of 44 m.p.h. (71 km/h).  The weather station also reported 1.35 inches (34.3 mm) of rain.  A weather station at Kahuku reported 8.52 inches (216.4 mm) of rain.

Hurricane Hone weakened on Sunday evening as it passed south of Hawaii.  An upper level trough northwest of the Hawaiian Islands was producing southwesterly winds that were blowing toward the top of Hone’s circulation.  Those winds were causing strong vertical wind shear and the wind shear was causing Hurricane Hone to weaken.  An eye was no longer visible at the center of Hone’s circulation.  The wind shear was also causing the distribution of thunderstorms to become asymmetrical.  Thunderstorms were still occurring in bands in the eastern part of Hurricane Hone.  Bands in the western part of Hone’s circulation consisted primarily of showers and low clouds.

Hurricane force winds were still occurring in the northeastern quadrant of Hurricane Hone.  Winds to hurricane force extended out 15 miles (25 km) in the northeastern quadrant of Hone’s circulation.  Winds to tropical storm force extended out 90 miles (145 km) from the center of Hurricane Hone.

Hurricane Hone will move through an environment that will be unfavorable for intensification during the next 24 hours.  Hone will move over water where the Sea Surface Temperatures are near 27°C.  However, the upper level trough northwest of the Hawaiian Islands will continue to cause strong vertical wind shear.  The wind shear will cause Hurricane Hone to weaken on Monday.

Hurricane Hone will move around the southern side of a subtropical high pressure system over the Eastern North Pacific and Central Pacific.  The high pressure system will steer Hone toward the west-northwest during the next 24 hours.  On its anticipated track, Hurricane Hone will move farther away from Hawaii on Monday.

Elsewhere, Hurricane Gilma started to weaken and Tropical Storm Hector formed over the Eastern North Pacific Ocean.

At 11:00 p.m. EDT on Sunday the center of Hurricane Gilma was located at latitude 18.1°N and longitude 135.1°W which put the center about 1310 miles (2110 km) east of Hilo, Hawaii.  Gilma was moving toward the west at 9 m.p.h. (15 km/h).  The maximum sustained wind speed was 105 m.p.h. (165 km/h) and there were wind gusts to 125 m.p.h. (200 km/h).  The minimum surface pressure was 972 mb.

At 11:00 p.m. EDT on Monday the center of Tropical Storm Hector was located at latitude 16.2°N and longitude 123.2°W which put the center about 980 miles (1580 km) west-southwest of the southern tip of Baja California.  Hector was moving toward the west 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 1001 mb.