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Karina Strengthens to a Hurricane

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Former Tropical Storm Karina strengthened to a hurricane as it moved over the Eastern North Pacific Ocean southwest of Baja California on Saturday night.  At 5:00 a.m. EDT on Sunday the center of Hurricane Karina was located at latitude 17.3°N and longitude 121.1°W which put the center about 820 miles (1325 km) west-southwest of the southern tip of Baja California.  Karina 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 100 m.p.h. (160 km/h).  The minimum surface pressure was 980 mb.

Former Tropical Storm Karina strengthened to a hurricane on Saturday night.  The inner end of a rainband wrapped around the western and southern sides of the center of Karina’s circulation.  An eye appeared to be forming at the center of Hurricane Karina.

The distribution of thunderstorms in Hurricane Karina was asymmetrical.  Thunderstorms were mostly occurring in bands in the southern half of Karina’s circulation.  Bands in the northern half of Hurricane Karina consisted primarily of showers and lower clouds.  Storms near the center of Karina 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 Karina.  Winds to hurricane force extended out 25 miles (40 km) in the northeastern quadrant of Karina’s circulation.  Winds to tropical storm force extended out 230 miles (370 km) from the center of Hurricane Karina.

Hurricane Karina will move through an environment mostly favorable for intensification during the next 24 hours.  Karina 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, there is a mass of drier air just to the west and north of Hurricane Karina.  The drier air will inhibit intensification of Karina, but the drier air probably will not be enough to prevent intensification.  Hurricane Karina is likely to intensify during the next 24 hours.  Karina could intensify rapidly at times, if the drier air does not get pulled into its circulation.  Karina strengthen to a major hurricane by Monday morning.

Hurricane Karina 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 Karina toward the west-northwest during the next 24 hours.  On its anticipated track, Hurricane Karina will move farther away from Baja California.

Elsewhere over the Eastern North Pacific Ocean, Tropical Storm Lowell was moving west toward the Central Pacific.  At 5:00 a.m. EDT on Sunday the center of Tropical Storm Lowell was located at latitude 13.2°N and longitude 139.1°W which put the center about 1150 miles (1850 km) east-southeast Hilo, Hawaii.  Lowell was moving toward the west 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 1000 mb.

Tropical Storms Karina and Lowell Form over Eastern North Pacific

Tropical Storms Karina and Lowell formed over the Eastern North Pacific Ocean on Thursday afternoon.  At 5:00 p.m. EDT on Thursday the center of Tropical Storm Karina was located at latitude 11.1°N and longitude 111.9°W which put the center about 825 miles (1330 km) south of the southern tip of Baja California.  Karina was moving toward the west-northwest at 13 m.p.h. (21 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.

Two low pressure systems over the Eastern North Pacific Ocean strengthened on Thursday afternoon and the U.S. National Hurricane Center designated the systems as Tropical Storm Karina and Tropical Storm Lowell.

Thunderstorms were developing in bands in the southern and eastern parts of Tropical Storm Karina.  Bands in the northwestern part of Karina’s circulation consisted primarily of showers and lower clouds.  Storms near the center of Karina generated upper level divergence that pumped mass away from the tropical storm.  The removal of mass caused the surface pressure to decrease.

The strongest winds were occurring in the northern part of Tropical Storm Karina.  Winds to tropical storm force extended out 205 miles (335 km) in the northern side of Karina’s circulation.  The winds in the southern side of Tropical Storm Karina were blowing at less than tropical storm force.

Tropical Storm Karina will move through an environment favorable for intensification during the next 24 hours.  Karina 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.  Tropical Storm Karina will intensify during the next 24 hours.  Karina could strengthen to a hurricane by Saturday morning.

Tropical Storm Karina will move around the southwestern part of a high pressure system that is centered over the Southwest U.S.  The high pressure system will steer Karina toward the northwest during the next 24 hours.  On its anticipated track, Tropical Storm Karina will move far to the southwest of Baja California.

At 5:00 p.m. EDT on Thursday the center of Tropical Storm Lowell was located at latitude 11.3°N and longitude 133.8°W which put the center about 1765 miles (2840 km) west-southwest of the southern tip of Baja California.  Lowell was moving toward the east-northeast at 5 m.p.h. (8 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 Lowell is forecast to move west toward the Central North Pacific Ocean and to strengthen to a hurricane during the weekend.

Tropical Storm Iselle Weakens

Tropical Storm Iselle weakened on Tuesday as it moved over the Eastern North Pacific Ocean west of Baja California.  At 11:00 p.m. EDT on Tuesday the center of Tropical Storm Iselle was located at latitude 21.3°N and longitude 122.5°W which put the center about 815 miles (1310 km) west of the southern tip of Baja California.  Iselle was moving toward the west-northwest at 9 m.p.h. (15 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 996 mb.

Tropical Storm Iselle weakened on Tuesday.  An upper level trough west of the West Coast of the U.S. was producing southwesterly winds that were blowing toward the top of Iselle’s circulation.  Those winds were causing moderate vertical wind shear.  The vertical wind shear was causing Tropical Storm Iselle to weaken.

The vertical wind shear was also causing the distribution of thunderstorms in Tropical Storm Iselle to be asymmetrical.  Thunderstorms were occurring in bands in the eastern side of Iselle’s circulation.  Bands in the western side of Tropical Storm Iselle consisted primarily of showers and lower clouds.  Storms near the center of Iselle generated upper level divergence that pumped mass away to the northeast of the tropical storm.  The removal of mass in the upper levels was less than the convergence of mass in the lower levels of the atmosphere.  So, the surface pressure increased on Tuesday.

The effects of the vertical wind shear also caused the distribution of wind speeds in Tropical Storm Iselle to be asymmetrical.  Winds to tropical storm force extended out 230 miles (370 km) in the eastern side of Iselle’s circulation.  Winds to tropical storm force extended out 140 miles (220 km) in the western side of Tropical Storm Iselle.

Tropical Storm Iselle will move through an environment that will be unfavorable for intensification during the next 24 hours.  Iselle will move over water where the Sea Surface Temperatures are near 26°C.  It will continue to move under the southern part of an upper level trough that is west of the West Coast of the U.S.  The upper level trough will continue to produce southwesterly winds that will blow toward the top of Iselle’s circulation.  Those winds will continue to cause moderate vertical wind shear.  In addition, Iselle will move into a mass of drier air that is west of Baja California.  Tropical Storm Iselle will  continue to weaken on Wednesday because of the effects of the vertical wind shear and the drier air.

Tropical Storm Iselle will move around the southwestern part of a high pressure system that is over the Eastern North Pacific Ocean.  The high pressure system will steer Iselle toward the west-northwest during the next 24 hours.  On its anticipate track, Tropical Storm Iselle will move farther away from Baja California.

Elsewhere, Tropical Storm Lala continued to weaken slowly far to the northwest of Hawaii.  At 11:00 p.m. EDT on Tuesday the center of Tropical Storm Lala was located at latitude 35.2°N and longitude 177.6°W which put the center about 470 miles (760 km) north of Kure Atoll.  Lala was moving toward the west-northwest at 6 m.p.h. (10 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 995 mb.

Tropical Storm Iselle Spins Southwest of Baja California

Tropical Storm Iselle was spinning southwest of Baja California on Monday night.  At 11:00 p.m. EDT on Monday the center of Tropical Storm Iselle was located at latitude 20.1°N and longitude 118.6°W which put the center about 590 miles (950 km) west-southwest of the southern tip of Baja California.  Iselle was moving toward the northwest at 15 m.p.h. (24 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 988 mb.

Tropical Storm Iselle strengthened on Monday.  More thunderstorms developed near the center of Iselle’s circulation.  Bands of showers and thunderstorms were also revolving around the center of Tropical Storm Iselle.  Storms near the center of Iselle generated upper level divergence that pumped mass away from the tropical storm.  The removal of mass caused the surface pressure to decrease.

Wind to tropical storm force extended out 195 miles (315 km) from the center of Tropical Storm Iselle.

Tropical Storm Iselle will move through an environment that will become unfavorable for intensification during the next 24 hours.  Iselle will move over water where the Sea Surface Temperatures are near 27°C.  It will move under the southern part of an upper level trough that is west of the West Coast of the U.S  The upper level trough will produce southwesterly winds that will blow toward the top of Iselle’s circulation.  Those winds will cause the vertical wind shear to increase on Tuesday.  In addition, Iselle will move into a mass of drier air that is west of Baja California.  Tropical Storm Iselle is likely to start to weaken on Tuesday because of the effects of the increased vertical wind shear and the drier air.

Tropical Storm Iselle will move around the southwestern part of a high pressure system that is over the Eastern North Pacific Ocean.  The high pressure system will steer Iselle toward the west-northwest during the next 24 hours.  On its anticipate track, Tropical Storm Iselle will move farther away from Baja California.

Elsewhere, former Tropical Storm Moke weakened to a tropical depression south of Hawaii and Tropical Storm Lala weakened gradually far to the northwest of Hawaii.

At 11:00 p.m. EDT on Monday the center of Tropical Depression Moke was located at latitude 16.0°N and longitude 163.0°W which put the center about 435 miles (695 km) east of Johnston Island.  Moke was moving toward the west at 14 m.p.h. (22 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.

At 11:00 p.m. EDT on Monday the center of Tropical Storm Lala was located at latitude 34.3°N and longitude 175.6°W which put the center about 435 miles (705 km) north-northeast of Kure Atoll.  Lala was moving toward the northwest at 6 m.p.h. (10 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 992 mb.

Tropical Storm Iselle Forms South of Baja California

Tropical Storm Iselle formed over the Eastern North Pacific Ocean south of Baja California on Sunday morning.  At 11:00 a.m. EDT on Sunday the center of Tropical Storm Iselle was located at latitude 15.3°N and longitude 114.2°W which put the center about 595 miles (955 km) south-southwest of the southern tip of Baja California.  Iselle was moving toward the west-northwest 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 1003 mb.

A low pressure system over the Eastern North Pacific Ocean south of Baja California strengthened on Sunday morning and the U.S. National Hurricane Center designated the system as Tropical Storm Iselle.

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

Wind to tropical storm force extended out 105 miles (165 km) from the center of Tropical Storm Iselle.

Tropical Storm Iselle will move through an environment that will be somewhat favorable for intensification during the next 24 hours.  Iselle will move over water where the Sea Surface Temperatures are near 29°C  It will move under the southeastern part of an upper level ridge that is south of Baja California.  The upper level ridge will produce northeasterly winds that will blow toward the top of Iselle’s circulation.  Those winds will cause moderate vertical wind shear.  The moderate vertical wind shear will inhibit intensification, but the wind shear may not be enough to prevent intensification.  Tropical Storm Estelle could intensify during the next 24 hours.

Tropical Storm Iselle will move around the southwestern part of a high pressure system that is over the Eastern North Pacific Ocean.  The high pressure system will steer Iselle toward the northwest during the next 24 hours.  On its anticipate track, Tropical Storm Iselle will remain far to the southwest of Baja California.

Elsewhere, Tropical Storm Moke was passing south of the Big Island of Hawaii and Tropical Storm Lala was spinning far to the northwest of Hawaii.

At 11:00 a.m. EDT on Sunday the center of Tropical Storm Moke was located at latitude 15.2°N and longitude 155.0°W which put the center about 310 miles (500 km) south of Hilo, Hawaii. Moke was moving toward the west 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 1002 mb.

At 11:00 a.m. EDT on Sunday the center of Tropical Storm Lala was located at latitude 32.1°N and longitude 173.9°W which put the center about 365 miles (590 km) northeast of Kure Atoll.  Lala was moving toward the west-northwest 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 988 mb.

Tropical Storm Lala Forms, Hurricane Watch for Hawaii

Tropical Storm Lala formed over the Central Pacific Ocean east-southeast of Hawaii on Thursday morning.  A Hurricane Watch was issued for the Big Island of Hawaii.  At 2:00 p.m. EDT on Thursday the center of Tropical Storm Lala was located at latitude 15.4°N and longitude 145.8°W which put the center about 680 miles (1095 km) east-southeast of Hilo, Hawaii.  Lala was moving toward the west-northwest at 10 m.p.h. (16 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 1001 mb.

A Hurricane Watch is in effect for Hawaii County.

More thunderstorms formed near the center of a low pressure system formerly called Potential Tropical Cyclone One-C on Thursday morning and the U.S. Central Pacific Hurricane Center designated the system as Tropical Storm Lala.

The circulation around Tropical Storm Lala exhibited more organization on Thursday.  New thunderstorms were developing near the center of Lala’s circulation.  Other thunderstorms were occurring in bands in the southern and eastern parts of Tropical Storm Lala.  Storms near the center of Lala generated upper level divergence that pumped mass away from the tropical storm.  The removal of mass caused the surface pressure to decrease.

The strongest winds were occurring in the eastern half of Tropical Storm Lala.  Winds to tropical storm force extended out 140 miles (220 km) in the northeastern quadrant of Lala’s circulation.  Winds to tropical storm force extended out 60 miles (95 km) in the southeastern quadrant of Tropical Storm Lala.  The winds in the western half of Lala’s circulation were blowing at less than tropical storm force.

Tropical Storm Lala will move through an environment favorable for intensification during the next 24 hours.  Lala will move over water where the Sea Surface Temperatures are near 27°C.  It will move under the eastern part of an upper level ridge that is east of Hawaii.  The upper level ridge will produce northeasterly winds that will blow toward the top of Lala’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 Lala will intensify during the next 24 hours.

Tropical Storm Lala will move around the southern side of a high pressure system over the Central Pacific Ocean.  The high pressure system will steer Lala toward the west-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Lala will move toward Hawaii.  Lala could reach the Big Island of Hawaii on Saturday.

Elsewhere, Tropical Storm Hernan strengthened a little as it moved far to the west of Baja California.  At 11:00 a.m. EDT on Thursday the center of Tropical Storm Hernan was located at latitude 18.0°N and longitude 131.9°W which put the center about 1460 miles (2350 km) west of the the southern tip of Baja California.  Hernan was moving toward the west-southwest at 3 m.p.h. (5 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.

Tropical Storm Hernan Forms West of Baja California

Tropical Storm Hernan formed over the Eastern North Pacific Ocean west of Baja California on Wednesday night.  At 5:00 a.m. EDT on Thursday the center of Tropical Storm Hernan was located at latitude 18.1°N and longitude 131.9°W which put the center about 1460 miles (2350 km) west of the the southern tip of Baja California.  Hernan was moving toward the west at 2 m.p.h. (3 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.

A low pressure system over the Eastern North Pacific Ocean strengthened on Wednesday night and the U.S. National Hurricane Center designated the system as Tropical Storm Hernan.

The distribution of thunderstorms in Tropical Storm Hernan was asymmetrical.  An upper level trough near the West Coast of the U.S. was producing westerly winds that were blowing toward the top of Hernan’s circulation.  Those winds were causing moderate vertical wind shear.  The moderate vertical wind shear was causing the asymmetrical distribution of thunderstorms in Tropical Storm Hernan.

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

Even though the thunderstorms were in the eastern side of Tropical Storm Hernan, the strongest winds were occurring in the western side of Hernan.  Winds to tropical storm force extended out 40 miles (65 km) in the western side of Hernan’s circulation.  The winds in the eastern side of Tropical Storm Hernan were blowing at less than tropical storm force.

Tropical Storm Hernan will move through an environment that will be unfavorable for intensification during the next 24 hours.  Hernan will move over water where the Sea Surface Temperatures are near 26°C.  However, the upper level trough near the West Coast of the U.S. will continue to cause moderate vertical wind shear.  Tropical Storm Hernan is unlikely to intensify during the next 24 hours because of the vertical wind shear.

Tropical Storm Hernan will move around the southern part of a high pressure system over the Eastern North Pacific Ocean.  The high pressure system will steer Hernan toward the southwest during the next 24 hours.  On its anticipated track, Tropical Storm Hernan will remain far to the west of Baja California.

Elsewhere, Potential Tropical Cyclone One-C moved closer to Hawaii.  At 5:00 a.m. EDT on Thursday the center of Potential Tropical Cyclone One-C was located at latitude 14.8°N and longitude 144.5°W which put the center about 775 miles (1250 km) east-southeast of Hilo,Hawaii.   It was moving toward the west at 10 m.p.h. (16 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 1002 mb.

Genevieve Still a Tropical Storm

Tropical Storm Genevieve was still a tropical storm on Saturday evening as it approached the Central Pacific Ocean.  At 11:00 p.m. EDT on Saturday the center of Tropical Storm Genevieve was located at latitude 23.5°N and longitude 136.0°W which put the center about 1655 miles (2665 km) west of southern tip of Baja California.  Genevieve was moving toward the west-northwest at 14 m.p.h. (22 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.

Tropical Storm Genevieve continued to weaken gradually on Saturday as it moved over cooler water.  Thunderstorms were still occurring in bands in the northern side of Genevieve’s circulation.  Bands in the southern side of Tropical Storm Genevieve consisted primarily of showers and lower clouds.  Storms near the center of Genevieve still generated some upper level divergence that pumped mass away to the north of the tropical storm.  The removal of mass in the upper levels was less than the convergence of mass in the lower levels of the atmosphere.  So, the surface pressure increased gradually on Saturday.

The asymmetrical distribution of thunderstorms in Tropical Storm Genevieve caused the distribution of wind speeds also to be asymmetrical.  Winds to tropical storm force extended out 140 miles (220 km) in the northern half of Genevieve’s circulation.  Winds to tropical storm force only extended out 45 miles in the southern half of Tropical Storm Genevieve.

Tropical Storm Genevieve will move through an environment that will be unfavorable for intensification during the next 24 hours.  Genevieve will move over water where the Sea Surface Temperatures are near 23.5°C.  It will move under the eastern side of an upper level trough that is east of Hawaii.  The upper level trough will produce southwesterly winds that will blow toward the top of Genevieve’s circulation.  Those winds will cause the vertical wind shear to increase on Sunday.  Tropical Storm Genevieve will continue to weaken on Sunday because of the cooler water and more vertical wind shear.

Tropical Storm Genevieve 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 Genevieve toward the west-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Genevieve will move over the Central North Pacific Ocean on Sunday.  Genevieve should stay well to the northeast of Hawaii.

Tropical Storm Genevieve Churns West of Baja California

Tropical Storm Genevieve continued to churn over the Eastern North Pacific Ocean west of Baja California on Friday.  At 11:00 p.m. EDT on Friday the center of Tropical Storm Genevieve was located at latitude 22.6°N and longitude 131.4°W which put the center about 1370 miles (2200 km) west of southern tip of Baja California.  Genevieve was moving toward the west-northwest at 15 m.p.h. (24 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 1000 mb.

Tropical Storm Genevieve continued to weaken gradually on Friday as it moved over cooler water in the Eastern North Pacific Ocean west of Baja California.  Thunderstorms near the center of Genevieve’s circulation were not rising as high into the atmosphere.  Bands of showers and thunderstorms were still revolving around the center of Tropical Storm Genevieve.  Storms near the center of Genevieve generated less upper level divergence that pumped less mass away from the tropical Storm.  The removal of mass in the upper levels was less than the convergence of mass in the lower levels of the atmosphere.  So, the surface pressure increased gradually on Friday.

Winds to tropical storm force extended out 105 miles (165 km) from the center of Tropical Storm Genevieve.

Tropical Storm Genevieve will move through an environment that will be unfavorable for intensification during the next 24 hours.  Genevieve will move over water where the Sea Surface Temperatures are near 24.5°C.  It will move through a region where the upper level winds are weak and there will be little vertical wind shear.  Tropical Storm Genevieve will continue to weaken gradually on Saturday as it moves over cooler water.

Tropical Storm Genevieve 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 Genevieve toward the west-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Genevieve will continue to move farther away from Baja California.

Genevieve Weakens to a Tropical Storm

Former Hurricane Genevieve weakened to a tropical storm on Thursday evening.  At 11:00 p.m. EDT on Thursday the center of Tropical Storm Genevieve was located at latitude 21.3°N and longitude 126.0°W which put the center about 1035 miles (1665 km) west of southern tip of Baja California.  Genevieve was moving toward the west-northwest at 15 m.p.h. (24 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 989 mb.

Former Hurricane Genevieve continued to weaken gradually on Thursday as it moved over cooler water in the Eastern North Pacific Ocean west of Baja California.  Thunderstorms were still occurring near the center of Genevieve’s circulation.  Bands of showers and thunderstorms were revolving around the center of Tropical Storm Genevieve.  Storms near the center of Genevieve still generated upper level divergence that pumped mass away from the hurricane.  However, the removal of mass in the upper levels was less than the convergence of mass in the lower levels of the atmosphere.  So, the surface pressure continued to increase on Thursday.

Winds to tropical storm force extended out 125 miles (200 km) from the center of Tropical Storm Genevieve.

Tropical Storm Genevieve will move through an environment that will be unfavorable for intensification during the next 24 hours.  Genevieve will move over water where the Sea Surface Temperatures are near 24°C.  It will move through a region where the upper level winds are weak and there will be little vertical wind shear.  Tropical Storm Genevieve will continue to weaken on Friday as it moves over cooler water.

Tropical Storm 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 west-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Genevieve will continue to move farther away from Baja California.