Depression Strengthens to Tropical Storm Boris

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Former Tropical Depression Two-E strengthened to Tropical Storm Boris over the Eastern North Pacific Ocean southeast of Acapulco, Mexico early on Monday.  At 8:00 a.m. EDT on Monday the center of Tropical Storm Boris was located at latitude 15.9°N and longitude 99.2°W which put the center about 85 miles (135 km) southeast of Acapulco, Mexico.   Boris was moving toward the northeast 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 1002 mb.

A Tropical Storm Warning is in effect for the portion of the coast from Laguna de Chacahua to Tecpan de Galeana.  The Tropical Storm Warning includes Acapulco.

Former Tropical Depression Two-E strengthened early on Monday and the U.S. National Hurricane Center designated the system as Tropical Storm Boris.

More thunderstorms formed near the center of Tropical Storm Boris on Sunday night.  More thunderstorms were also developing in bands revolving around the center of Boris’ circulation.  Storms near the center of Boris generated upper level divergence that was pumping mass away to the west of the tropical storm.  The removal of mass caused the surface pressure to decrease slowly,

Although the circulation around Tropical Storm Boris was large, the strongest winds were occurring close to the center of circulation.  Winds to tropical storm force extended out 35 miles (55 km) from the center of Boris’ circulation.

Tropical Storm Boris will move through an environment somewhat favorable for intensification during the next few hours.  Boris will move over water where the Sea Surface Temperatures are near 31°C.  It will move under the southeastern part of an upper level ridge that is over Mexico.  The upper level ridge will produce easterly winds that will blow toward the top of Boris’ 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 Boris could intensify during the next few hours.

Tropical Storm Boris around the southwestern side of a high pressure system that is over southeastern Mexico.  The high pressure system will steer Boris toward the north during the next 24 hours.  On its anticipated track, Tropical Storm Boris will make landfall on the coast of Mexico near Acapulco later on Monday.

Tropical Storm Boris will being strong winds and very heavy rain to parts of Guerrero and Oaxaca.  Heavy rain is likely to cause flash floods in some locations.

Tropical Depression Two-E Forms South of Acapulco

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Tropical Depression Two-E formed over the Eastern North Pacific Ocean south of Acapulco, Mexico on Sunday.  At 2:00 p.m. EDT on Sunday the center of Tropical Depression Two-E was located at latitude 15.7°N and longitude 99.8°W which put the center about 85 miles (135 km) south of Acapulco, Mexico.  The tropical depression was moving toward the northeast at 6 m.p.h. (10 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.

The government of Mexico issued a Tropical Storm Warning that is in effect for the portion of the coast from Laguna de Chacahua to Tecpan de Galeana.  The Tropical Storm Warning includes Acapulco.

A low pressure system over the Eastern North Pacific Ocean south of Acapulco strengthened on Sunday and the U.S. National Hurricane Center designated the system as Tropical Depression Two-E.

A few more thunderstorms were forming near the center of Tropical Depression Two-E on Sunday afternoon.  More thunderstorms were also developing in bands revolving around the center of the tropical depression.  Storms near the center of Tropical Depression Two-E started to generate upper level divergence that was pumping mass away to the west of the tropical depression.  The removal of mass was causing the surface pressure to decrease slowly,

Tropical Depression Two-E will move through an environment somewhat favorable for intensification during the next 18 hours.  The tropical depression will move over water where the Sea Surface Temperatures are near 31°C.  It will move under the southeastern part of an upper level ridge that is over Mexico.  The upper level ridge will produce easterly winds that will blow toward the top of the tropical depression.  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 Depression Two-E could intensify to a tropical storm.

Tropical Depression Two-E around the western side of a high pressure system that is over southeastern Mexico.  The high pressure system will steer the tropical depression toward the north during the next 24 hours.  On its anticipated track, Tropical Depression Two-E will make landfall on the coast of Mexico east of Acapulco in less than 24 hours.

Tropical Depression Two-E could be a tropical storm at the time of landfall.  In any case, the tropical depression or tropical storm will being strong winds and heavy rain to Guerrero and Oaxaca.  Heavy rain is likely to cause flash floods in some locations.

Elsewhere over the Eastern North Pacific Ocean, Tropical Depression Amanda continued to weaken slowly far to the east-southeast of Hawaii.  At 11:00 a.m. EDT on Sunday the center of Tropical Depression Amanda was located at latitude 11.5°N and longitude 135.4°W which put the center about 1425 miles (2295 km) east-southeast of Hilo, Hawaii.  Amanda was moving toward the southwest at 5 m.p.h. (8 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 1007 mb.

Amanda Weakens to a Tropical Depression

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Former Tropical Storm Amanda weakened to a tropical depression over the Eastern North Pacific Ocean east-southeast of Hawaii on Saturday.  At 5:00 p.m. EDT on Saturday the center of Tropical Depression Amanda was located at latitude 12.3°N and longitude 134.7°W which put the center about 1445 miles (2325 km) east-southeast of Hilo, Hawaii.  Amanda was moving toward the southwest at 5 m.p.h. (8 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 1007 mb.

Former Tropical Storm Amanda weakened to a tropical depression on Saturday.  A combination of dry, stable air and vertical wind shear caused many of the remaining thunderstorms in Amanda’s circulation to dissipate.  A few thunderstorms were still occurring in bands in the western side of Tropical Depression Amanda.  Most of the bands revolving around the center of Amanda’s circulation consisted primarily of showers and lower clouds.

There were no thunderstorms near the center of Tropical Depression Amanda to generate upper level divergence.  Convergence of mass in the lower levels of the atmosphere caused the surface pressure to increase slowly.

Tropical Depression Amanda will move through an environment unfavorable for intensification during the next 24 hours.  Amanda will move over water where the Sea Surface Temperatures are near 27°C.  It will move under the southwestern part of an upper level ridge that is west of Mexico.  The upper level ridge will produce southeasterly winds that will blow toward the top of Amanda’s circulation.  Those winds will cause moderate vertical wind shear.  In addition, Tropical Depression Amanda will continue to move through a region of drier air.  The vertical wind shear and the drier air will cause Tropical Depression Amanda to continue to weaken during the next 24 hours.

Tropical Depression Amanda 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 Amanda slowly toward the west-southwest during the next 24 hours.  On its anticipated track, Tropical Storm Amanda will remain far to the east-southeast of Hawaii.

Tropical Storm Amanda Spins Southwest of Baja California

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Tropical Storm Amanda continued to spin over the Eastern North Pacific Ocean far to the southwest of Baja California on Friday.  At 5:00 p.m. EDT on Friday the center of Tropical Storm Amanda was located at latitude 13.1°N and longitude 134.1°W which put the center about 1725 miles (2775 km) west-southwest of the southern tip of Baja California.  Amanda was moving toward the west 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 Amanda started to weaken on Friday as it spun far to the southwest of Baja California.  Amanda moved into a region with drier, more stable air.  The drier air and more vertical wind shear caused some of the thunderstorms in Tropical Storm Amanda to dissipate.  Thunderstorms were still occurring in bands west of the center of Amanda’s circulation.  Bands in the other parts of Tropical Storm Amanda consisted primarily of showers and lower clouds.

Thunderstorms west of the center of Tropical Storm Amanda generated less upper level divergence.  The removal of mass in the upper levels of the atmosphere was less than the convergence of mass in the lower levels.  So, the net inflow of mass caused the surface pressure to increase slowly.

The circulation around Tropical Storm Amanda was very small.  Winds to tropical storm force extended out 35 miles (55 km) from the center of Amanda’s circulation.

Tropical Storm Amanda will move through an environment unfavorable for intensification during the next 24 hours.  Amanda will move over water where the Sea Surface Temperatures are near 27°C.  It will move under the western part of an upper level ridge that is west of Mexico.  The upper level ridge will produce southeasterly winds that will blow toward the top of Amanda’s circulation.  Those winds will cause moderate vertical wind shear. In addition, Tropical Storm Amanda will continue to move through a region of drier air.  The vertical wind shear and the drier air will cause Tropical Storm Amanda to continue to weaken during the next 24 hours.

Tropical Storm Amanda 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 Amanda slowly toward the west-southwest during the next 24 hours.  On its anticipated track, Tropical Storm Amanda will remain far to the southwest of Baja California.

Tropical Storm Amanda Strengthens a Little

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Tropical Storm Amanda strengthened a little on Thursday as it continued to spin over the Eastern North Pacific Ocean far to the southwest of Baja California.  At 5:00 p.m. EDT on Thursday the center of Tropical Storm Amanda was located at latitude 12.7°N and longitude 131.1°W which put the center about 1560 miles (2510 km) west-southwest of the southern tip of Baja California.  Amanda was moving toward the west-northwest at 9 m.p.h. (15 km/h).  The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h).  The minimum surface pressure was 1004 mb.

Even though Tropical Storm Amanda strengthened a little on Thursday, the distribution of thunderstorms in Amanda continued to be asymmetrical.  Thunderstorms were occurring mainly in bands in the western half of Amanda’s circulation.  Bands in the eastern half of Tropical Storm Amanda consisted primarily of showers and lower clouds.  Storms near the center of Amanda generated upper level divergence that pumped mass away to the north of the tropical storm.  The removal of mass caused the surface pressure to decrease slowly.

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

Tropical Storm Amanda will move through an environment marginally favorable for intensification during the next 24 hours.  Amanda will move over water where the Sea Surface Temperatures are near 28°C.  It will move under the western part of an upper level ridge that is west of Mexico.  The upper level ridge will produce southeasterly winds that will blow toward the top of Amanda’s circulation.  Those winds will cause moderate vertical wind shear. The vertical wind shear will inhibit intensification, but the wind shear may not be enough to prevent intensification.  Tropical Storm Amanda could intensify a little more during the next 24 hours.  Amanda will move into a region where the upper level winds are stronger and where there will be more vertical wind shear during the weekend.  Tropical Storm Amanda will start to weaken when the vertical wind shear in creases.

Tropical Storm Amanda 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 Amanda slowly toward the west-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Amanda will remain far to the southwest of Baja California.

Depression Strengthens to Tropical Storm Amanda

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Former Tropical Depression One-E strengthened to Tropical Storm Amanda far to the southwest of Baja California on Wednesday morning.  At 11:00 a.m. EDT on Wednesday the center of Tropical Storm Amanda was located at latitude 10.6°N and longitude 128.2°W which put the center about 1475 miles (2375 km) west-southwest of the southern tip of Baja California.  Amanda was moving toward the 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.

Former Tropical Depression One-E strengthened far to the southwest of Baja California on Wednesday morning and the U.S. National Hurricane Center designated the system as Tropical Storm Amanda.

More thunderstorms formed just to the west of the center of Tropical Storm Amanda on Wednesday morning.  Other thunderstorms were occurring in bands in the northern and western parts of Amanda’s circulation.  Bands in the southern and eastern parts of Tropical Storm Amanda still consisted primarily of showers and lower clouds.  Storms near the center of Tropical Storm Amanda generated upper level divergence that pumped mass away to the north of the tropical storm.  The removal of mass caused the surface pressure to decrease slowly.

The circulation around Tropical Storm Amanda was small.  Winds to tropical storm force extended out 60 miles (95 km) in the northern half of Amanda’s circulation.  The winds in the southern half of Tropical Storm Amanda were blowing at less than tropical storm force.

Tropical Storm Amanda will move through an environment favorable for intensification during the next 24 hours.  Amanda will move over water where the Sea Surface Temperatures are near 28°C.  It will move under the western part of an upper level ridge that is west of Mexico. The upper level ridge will produce southerly winds that will blow toward the top of Amanda’s circulation.  Those winds will cause moderate vertical wind shear.  The vertical wind shear will inhibit intensification, but the wind shear will not be enough to prevent intensification.  Tropical Storm Amanda will intensify during the next 24 hours.

Tropical Storm Amanda 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 Amanda slowly toward the northwest during the next 24 hours.  On its anticipated track, Tropical Storm Amanda will remain far to the southwest of Baja California during the next few days.

Tropical Depression One-E Forms Southwest of Baja California

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Tropical Depression One-E formed over the Eastern North Pacific Ocean far to the southwest of Baja California on Tuesday afternoon.  At 5:00 p.m. EDT on Tuesday the center of Tropical Depression One-E was located at latitude 9.4°N and longitude 126.7°W which put the center about 1450 miles (2335 km) southwest of the southern tip of Baja California.  The tropical depression was moving toward the west at 3 m.p.h. (5 km/h).  The maximum sustained wind speed was 30 m.p.h. (50 km/h) and there were wind gusts to 40 m.p.h. (65 km/h).  The minimum surface pressure was 1008 mb.

A low pressure system over the Eastern North Pacific Ocean southwest of Baja California strengthened on Tuesday afternoon and the U.S. National Hurricane Center designated the system as Tropical Depression One-E.

The distribution of thunderstorms in Tropical Depression One-E was asymmetrical.  Thunderstorms were occurring in bands in the northern half of the tropical depression.  Bands in the southern half of Tropical Depression One-E consisted primarily of showers and lower clouds.  Storms near the center of Tropical Depression One-E began to generate upper level divergence that pumped mass away from the tropical depression.  The removal of mass caused the surface pressure to start to decrease slowly.

Tropical Depression One-E will move through an environment favorable for intensification during the next 24 hours.  The tropical depression will move over water where the Sea Surface Temperatures are near 28°C.  It will move under the western part of an upper level ridge that is west of Mexico.  The upper level ridge will produce southerly winds that will blow toward the top of the tropical depression.  Those winds will cause moderate vertical wind shear.  The vertical wind shear will inhibit intensification, but the wind shear will not be enough to prevent intensification.  Tropical Depression One-E is likely to intensify to a tropical storm during the next 24 hours.

Tropical Depression One-E 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 the tropical depression slowly toward the northwest during the next 24 hours.  On its anticipated track, Tropical Depression One-E will remain far to the southwest of Baja California during the next few days.

Tropical Storm Jangmi Brings Wind and Rain to Japan

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Tropical Storm Jangmi brought wind and rain to parts of Japan on Tuesday.  At 11:00 a.m. EDT on Tuesday the center of Tropical Storm Jangmi was located at latitude 32.8°N and longitude 134.3°E which put the center about 135 miles (215 km) southwest of Osaka, Japan.  Jangmi was moving toward the northeast at 29 m.p.h. (46 km/h).  The maximum sustained wind speed was 60 m.p.h. (95 km/h) and there were wind gusts to 80 m.p.h. (130 km/h).  The minimum surface pressure was 984 mb.

Tropical Storm Jangmi was bringing wind and rain to parts of Honshu on Tuesday.  A weather station at Kansai International Airport in Osaka (RJBB) reported a sustained wind speed of 43 m.p.h. (68 km/h) and a wind gust of 55 m.p.h. (89 km/h).

Tropical Storm Jangmi was making a transition to an extratropical cyclone on Tuesday.  The circulation around Jangmi was interacting with a stationary front that was just south of Japan.  The interaction with the front was causing the distribution of thunderstorms in Tropical Storm Jangmi to become more asymmetrical.  Thunderstorms were occurring in bands in the eastern and northern parts of Jangmi’s circulation.  Bands in the western and southern parts of Tropical Storm Jangmi consisted primarily of showers and lower clouds.

The circulation around Tropical Storm Jangmi was still large. Winds to tropical storm force extended out 240 miles (390 km) from the center of Jangmi’s circulation.

Tropical Storm Jangmi will move through an environment that will be unfavorable for intensification of a tropical cyclone during the next 24 hours.  Jangmi will move over water where the Sea Surface Temperatures are near 23°C.  It will move under the eastern part of an upper level trough that is over South Korea.  The upper level trough will produce strong southwesterly winds that will blow toward the top of Jangmi’s circulation.  Those winds will cause strong vertical wind shear.  The cool Sea Surface Temperature and the strong vertical wind shear will cause Tropical Storm Jangmi to continue to make a transition to an extratropical cyclone during the next 24 hours.

The upper level trough over South Korea will steer Tropical Storm Jangmi toward the east-northeast during the next 24 hours.  On its anticipated track, the center of Tropical Storm Jangmi will pass near Tokyo in 18 hours.

Tropical Storm Jangmi will continue to bring strong winds and locally heavy rain to parts of Honshu.  Heavy rain could cause flash floods in some locations.

Atlantic Hurricane Season Starts

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The Atlantic hurricane season officially started on June 1, 2026.  The hurricane season began quietly.  No tropical depressions, tropical storms or hurricanes were present over the Atlantic Ocean, the Caribbean Sea, or the Gulf of Mexico.  No tropical cyclones are expected to form over the Atlantic Ocean during the next few days.  Whenever a tropical storm does form over the Atlantic Ocean, the first name on the list will be Arthur.

Fewer tropical storms and hurricanes are expected to form over the Atlantic Ocean this year.  A strong El Niño pattern is expected to develop over the Equatorial Pacific Ocean during the next few months.  Much warmer than normal Sea Surface Temperatures (SSTs) are expected to be present over the eastern Equatorial Pacific Ocean during the hurricane season.

The warmer Sea Surface Temperatures associated with an El Niño produce more rising motion and convection.  The stronger rising motion begins to move toward the east when it reaches the upper troposphere where it produces stronger westerly winds.  The stronger westerly winds blow over the Caribbean Sea and the western Atlantic Ocean.  Those stronger westerly winds cause more vertical wind shear.  More vertical wind shear makes it more difficult for tropical storms and hurricanes to develop.

Jangmi Brings Wind and Rain to Okinawa

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Tropical Storm Jangmi brought wind and rain to Okinawa on Monday.  At 11:00 a.m. EDT on Monday the center of Tropical Storm Jangmi was located at latitude 27.3°N and longitude 128.0°E which put the center about 25 miles (40 km) northwest of Okinawa.  Jangmi was moving toward the north at 13 m.p.h. (21 km/h).  The maximum sustained wind speed was 65 m.p.h. (105 km/h) and there were wind gusts to 85 m.p.h. (130 km/h).  The minimum surface pressure was 982 mb.

Tropical Storm Jangmi brought wind and rain to Okinawa on Monday.  A weather station at Kadena Air Force Base in Okinawa (RODN) reported a sustained wind speed of 52 m.p.h. (84 km/h) and a wind gust of 71 m.p.h. (115 km/h).

Former Typhoon Jangmi weakened back to a tropical storm Monday.  A large eye with a diameter of 60 miles (95 km) was still present at the center of Tropical Storm Jangmi.  The eye was surrounded by a broken ring of thunderstorms and the strongest winds were occurring in that ring of storms.

The circulation around Tropical Storm Jangmi was pulling drier air around the western and southern parts of Jangmi’s circulation.  Thunderstorms were still occurring in bands in the eastern and northern parts of Tropical Storm Jangmi.  Bands in the western and southern sides of Jangmi’s circulation consisted primarily of showers and lower clouds.

Storms near the center of Jangmi generated upper level divergence that pumped mass away to the northeast of the tropical storm.  However, the removal of mass in the upper levels of the atmosphere was less than the convergence of mass in the lower levels.  So, the surface pressure increased gradually.

The circulation around Tropical Storm Jangmi was still large.  Winds to tropical storm force extended out 205 miles (330 km) from the center of Jangmi’s circulation.

Tropical Storm Jangmi will move through an environment that will be unfavorable for intensification during the next 24 hours.  Jangmi will move over water where the Sea Surface Temperatures are near 26°C. It will move under the eastern part of an upper level trough that is over the east coast of China.  The upper level trough will produce southwesterly winds that will blow toward the top of Jangmi’s circulation.  Those winds will cause the moderate vertical wind shear. Tropical Storm Jangmi will continue to weaken slowly during the next 24 hours.

The upper level trough over the east coast of China will steer Tropical Storm Jangmi toward the northeast during the next 24 hours.  On its anticipated track, the center of Jangmi will move over the northern Ryukyu Islands.  The center of Tropical Storm Jangmi will be southeast of Kyushu in 18 hours.

Tropical Storm Jangmi will bring strong winds and locally heavy rain to the northern Ryukyu Islands.  Heavy rain could cause flash floods in some locations. Jangmi will also bring strong winds and heavy rain to parts of Kyushu, Shikoku, and Honshu.