Tag Archives: Typhoon Dolphin

Typhoon Dolphin Moves West of Wake Island

Typhoon Dolphin moved west of Wake Island on Thursday.  At 11:00 p.m. EDT on Thursday the center of Typhoon Dolphin was located at latitude 18.6°N and longitude 161.5°E which put the center about 315 miles (510 km) west-southwest of Wake Island.  Dolphin was moving toward the west-northwest at 12 m.p.h. (19 km/h).  The maximum sustained wind speed was 155 m.p.h. (250 km/h) and there were wind gusts to 190 m.p.h. (305 km/h).  The minimum surface pressure was 924 mb.

Typhoon Dolphin appeared to go through another eyewall replacement cycle.  A circular eye with a diameter of 30 miles (50 km) was present at the center of Dolphin’s circulation on Thursday evening.  The eye was surrounded by a ring of thunderstorms.  The strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms revolved around the core of Typhoon Dolphin.  Storms near the core of Dolphin generated strong upper level divergence that pumped large amounts of mass from the typhoon.  The removal of large amounts of mass in the upper levels was nearly equal to the convergence of mass in the lower levels of the atmosphere.  So, the surface pressure  did not change much on Thursday.

The completion of another eyewall replacement cycle increased the size of the circulation around Typhoon Dolphin.  Winds to typhoon force extended out 60 miles (95 km) from the center of Dolphin’s circulation.  Winds to tropical storm force extended out 175 miles (280 km) from the center of Typhoon Dolphin.

The Hurricane Intensity Index (HII) for Typhoon Dolphin is 33.3.  The Hurricane Size Index (HSI) is 21.0 and the Hurricane Wind Intensity Size Index (HWISI) is 54.3.  Typhoon Dolphin is similar in intensity to Hurricane Ian when Ian hit Southwest Florida in 2022.  Typhoon Dolphin is larger than Ian was.

Typhoon Dolphin will move through an environment favorable for a powerful typhoon during the next 24 hours.  Dolphin will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the middle of an upper level ridge that is over the Western North Pacific Ocean.  The upper level winds are weak near the middle of the ridge and there will be little vertical wind shear.  Typhoon Dolphin is likely to maintain its intensity on Friday.  Eyewall replacement cycles are likely to cause fluctuation in the intensity of Typhoon Dolphin during the next few days.

Typhoon Dolphin will move around the southern side of a high pressure system that is over the Western North Pacific Ocean.  The high pressure system will steer Dolphin toward the west-northwest during the next 24 hours.  On its anticipated track, the center of Typhoon Dolphin will move toward Iwo To.

Typhoon Dolphin Strengthens to Equivalent of Cat. 5 Hurricane

Typhoon Dolphin strengthened to the equivalent of a Category 5 hurricane on the Saffir-Simpson Scale as it moved over the Western North Pacific Ocean south of Wake Island on Wednesday.  At 5:00 p.m. EDT on Wednesday the center of Typhoon Dolphin was located at latitude 16.0°N and longitude 166.3°E which put the center about 240 miles (390 km) south of Wake Island.  Dolphin was moving toward the northwest at 12 m.p.h. (19 km/h).  The maximum sustained wind speed was 165 m.p.h. (265 km/h) and there were wind gusts to 200 m.p.h. (320 km/h).  The minimum surface pressure was 915 mb.

Typhoon Dolphin strengthened to the equivalent of a Category 5 hurricane on Wednesday.  A  circular eye with a diameter of 20 miles (32 km) was present at the center of Dolphin’s circulation.  The eye was surrounded by a ring of thunderstorms. The strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms revolved around the core of Typhoon Dolphin.  Storms near the core of Dolphin generated strong upper level divergence that pumped large amounts of mass from the typhoon. The removal of large amounts of mass caused the surface pressure to decrease.

The distribution of wind speeds in Typhoon Dolphin was symmetrical.  Winds to typhoon force extended out 40 miles (65 km) from the center of Dolphin’s circulation.  Winds to tropical storm force extended out 125 miles (200 km) from the center of Typhoon Dolphin.

The Hurricane Intensity Index (HII) for Typhoon Dolphin is 36.7.  The Hurricane Size Index (HSI) is 15.5 and the Hurricane Wind Intensity Size Index (HWISI) is 52.2.  Typhoon Dolphin is similar in intensity to Hurricane Otis when Otis hit Mexico in 2023.  Typhoon Dolphin is larger than Otis was.

Typhoon Dolphin will move through an environment favorable for a powerful typhoon during the next 24 hours.  Dolphin will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the middle of an upper level ridge that is over the Western North Pacific Ocean.  The upper level winds are weak near the middle of the ridge and there will be little vertical wind shear.  Typhoon Dolphin could continue to intensify during the next few hours.  Eyewall replacement cycles are likely to cause fluctuation in the intensity of Typhoon Dolphin during the next few days.

Typhoon Dolphin will move around the southern side of a high pressure system that is over the Western North Pacific Ocean.  The high pressure system will steer Dolphin toward the northwest during the next 24 hours.  On its anticipated track, the center of Typhoon Dolphin will be east of Iwo To by the end of the weekend.

Typhoon Dolphin Rapidly Intensifies to Equivalent of a Major Hurricane

Typhoon Dolphin rapidly intensified to the equivalent of a major hurricane as it moved over the Western North Pacific Ocean southeast of Wake Island.  At 11:00 a.m. EDT on Tuesday the center of Typhoon Dolphin was located at latitude 13.6°N and longitude 170.3°E which put the center about 490 miles (790 km) southeast of Wake Island.  Dolphin was moving toward the west at 12 m.p.h. (19 km/h).  The maximum sustained wind speed was 115 m.p.h. (185 km/h) and there were wind gusts to 145 m.p.h. (2350 km/h).  The minimum surface pressure was 960 mb.

Typhoon Dolphin rapidly intensified to the equivalent of a major hurricane on Tuesday morning.  A very small circular eye was present at the center of Dolphin’s circulation.  The eye was surrounded by a ring of thunderstorms.  The strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms revolved around the core of Typhoon Dolphin.  Storms near the core of Dolphin generated strong upper level divergence that pumped large amounts of mass from the typhoon.  The removal of large amounts of mass caused the surface pressure to decrease rapidly.

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

Typhoon Dolphin will move through an environment that will be very favorable for intensification during the next 24 hours.  Dolphin will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the middle of an upper level ridge that is over the Western North Pacific Ocean.  The upper level winds are weak near the middle of the ridge and there will be little vertical wind shear.  Typhoon Dolphin will intensify during the next 24 hours.  Dolphin could continue to intensify rapidly during the next few hours.  Typhoon Dolphin is likely to strengthen to the equivalent of a Category 5 hurricane on the Saffir-Simpson Scale on Thursday.

Typhoon Dolphin will move around the southern side of a high pressure system that is over the Western North Pacific Ocean.  The high pressure system will steer Dolphin toward the west-northwest during the next 24 hours.  On its anticipated track, the center of Typhoon Dolphin will pass south of Wake Island on Wednesday.

Dolphin Rapidly Intensifies to a Typhoon

Former Tropical Storm Dolphin rapidly intensified to a typhoon on Monday night as it moved over the Western North Pacific Ocean southeast of Wake Island.  At 5:00 a.m. EDT on Tuesday the center of Typhoon Dolphin was located at latitude 13.4°N and longitude 171.2°E which put the center about 535 miles (860 km) southeast of Wake Island.  Dolphin was moving toward the west at 13 m.p.h. (21km/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 980 mb.

Former Tropical Storm Dolphin rapidly intensified to a typhoon on Monday night.  A very small circular eye formed at the center of Dolphin’s circulation.  The eye was surrounded by a ring of thunderstorms.  The strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms revolved around the core of Typhoon Dolphin.  Storms near the core of Dolphin generated strong upper level divergence that pumped large amounts of mass from the typhoon.  The removal of large amounts of mass caused the surface pressure to decrease rapidly.

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

Typhoon Dolphin will move through an environment that will be very favorable for intensification during the next 24 hours.  Dolphin will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the middle of an upper level ridge that is over the Western North Pacific Ocean.  The upper level winds are weak near the middle of the ridge and there will be little vertical wind shear.  Typhoon Dolphin will intensify during the next 24 hours.  Dolphin is likely to continue to intensify rapidly during the next few hours.  Typhoon Dolphin is likely to strengthen to the equivalent of a major hurricane later today.  Dolphin is likely to intensify to the equivalent of a Category 5 hurricane on the Saffir-Simpson Scale by Thursday.

Typhoon Dolphin will move around the southern side of a high pressure system that is over the Western North Pacific Ocean.  The high pressure system will steer Dolphin toward the west-northwest during the next 24 hours.  On its anticipated track, the center of Typhoon Dolphin will pass be south of Wake Island on Wednesday.