Tag Archives: Saudi Arabia

Powerful Tropical Cyclone Mekunu Lashes Western Oman

Powerful Tropical Cyclone Mekunu lashed western Oman late on Friday.  At 5:00 p.m. EDT on Friday the center of Tropical Cyclone Mekunu was located at latitude 16.8°N and longitude 53.7°E which put it about 30 miles (50 km) south-southwest of Salalah, Oman.  Mekunu was moving toward the west-northwest at 5 m.p.h.  The maximum sustained wind speed was 115 m.p.h. (185 km/h) and there were wind gusts to 145 m.p.h. (230 km/h).  The minimum surface pressure was 954 mb.

Tropical Cyclone Mekunu intensified into the equivalent of a major hurricane on Friday as it approached the coast of western Oman.  The circulation contracted around a small circular eye.  A well formed ring of thunderstorms surrounded the eye and the strongest winds were occurring in that ring of storms.  Several bands of strong thunderstorms were revolving around the core of Tropical Cyclone Mekunu.

Winds to hurricane/typhoon force extended out about 30 miles (50 km) from the center of Tropical Cyclone Mekunu.  Winds to tropical storm force extended out about 120 miles (195 km) from the center of circulation.  The Hurricane Intensity Index (HII) for Tropical Cyclone Mekunu was 20.6.  The Hurricane Size Index (HSI) was 11.3 and the Hurricane Wind Intensity Size Index was 31.9.  These indices indicate that Tropical Cyclone Mekunu is capable of causing regional major damage.

Winds near the core of Tropical Cyclone Mekunu will be capable of causing major damage near the coast of western Oman.  The rainbands revolving around the core will cause minor damage within 100 miles (160 km) of the center of Mekunu.  Strong winds near and east of the center of circulation will be capable of causing a storm surge of 9 to 13 feet (3 to 4 meters) at the coast.  Strong thunderstorms will drop heavy rain, especially in places where the air flows up slopes.  Significant flash flooding will be possible in normally arid locations.

Tropical Cyclone Mekunu Nears Western Oman

Tropical Cyclone Mekunu neared western Oman late on Thursday.  At 11:00 p.m. EDT on Thursday the center of Tropical Cyclone Mekunu was located at latitude 15.5°N and longitude 54.2°E which put it about 125 miles (200 km) south of Salalah, Oman.  Mekunu was moving toward the west-northwest at 7 m.p.h. (11 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 964 mb.

There was a small eye at the center of circulation of Tropical Cyclone Mekunu.  The eye was surrounded by a tight ring of thunderstorms and the strongest winds were occurring in that ring of storms.  Several bands of showers and thunderstorms were revolving around the core of the tropical cyclone.  Storms near the core were generating upper level divergence which was pumping mass away from the tropical cyclone in all directions.  Winds to hurricane/typhoon force extended out about 60 miles (95 km) from the center of circulation.  Winds to tropical storm force extended out about 200 miles (320 km) from the center.

The Hurricane Intensity Index (HII) for Tropical Cyclone Mekunu was 16.5.  The Hurricane Size Index (HSI) was 21.6 and the Hurricane Wind Intensity Size Index (HWISI) was 38.1.  These indices indicate that Tropical Cyclone Mekunu is capable of producing widespread serious damage.

Tropical Cyclone Mekunu will move through an environment favorable for intensification during the next 12 hours while it approaches the coast.  Mekunu will move over water where the Sea Surface Temperature is near 30°C.  It is moving under the western end of an upper level ridge.  The upper level winds are weak and there is little vertical wind shear.  Tropical Cyclone Mekunu could strengthen a little more before it approaches the coast.  When Tropical Cyclone Mekunu approaches the Arabian Peninsula, it will begin to pull drier air into the western side of the circulation.  Mekunu will start to weaken when the drier air reaches the core of the circulation.

Tropical Cyclone Mekunu is moving around the western end of the upper level ridge.  The ridge will steer Mekunu toward the northwest during the next 24 hours.  On its anticipated track Tropical Cyclone Mekunu will make landfall near the border between Oman and Yemen in 12 to 18 hours.  Mekunu will produce winds to hurricane/typhoon force near where the center makes landfall.  Winds to tropical storm force will occur east and west of the core.  It will drop locally heavy rain and flash flooding will be likely.  There could also be a storm surge of 6 to 10 feet (2 to 3 meters) near where the center makes landfall.

Tropical Cyclone Mekunu Passes By Socotra Island

Tropical Cyclone Mekunu passed by Socotra Island on Wednesday.  At 11:00 p.m. EDT on Wednesday the center of Tropical Cyclone Mekunu was located at latitude 13.3°N and longitude 55.5°E which put it about 285 miles (460 km) south-southeast of Salalah, Oman.  Mekunu was moving toward the north-northwest at 6 m.p.h. (10 km/h).  The maximum sustained wind speed was 90 m.p.h. (145 km/h) and there were wind gusts to 115 m.p.h. (185 km/h).  The minimum surface pressure was 970 mb.

The inner core of Tropical Cyclone Mekunu passed east of Socotra Island on Wednesday.  However, several strong rainbands in the western half of the tropical cyclone did pass over the island.  Those bands dropped locally heavy rain and they may have produced winds to tropical storm force,  Rain was still falling over parts of the island and the potential for flooding continued.

Tropical Cyclone Mekunu intensified quickly into the equivalent of a hurricane/typhoon on Wednesday.  An eye formed at the center of circulation.  A nearly complete ring of thunderstorms surrounded the eye and the strongest winds were occurring in that ring of storms.  The northeastern part of the ring was the weakest section of the eyewall.  Several bands of showers and thunderstorms were revolving around the core of Tropical Cyclone Mekunu.  The strongest rainbands were south and west of the center of circulation,  Bands northeast of the center consisted primarily of low clouds and showers.  Thunderstorms near the core of Mekunu were generating strong upper level divergence which was pumping mass away from the tropical cyclone.

Winds to hurricane/typhoon force extended out about 60 miles (95 km) from the center of circulation.  Winds to tropical storm force extended out about 230 miles (370 km) from the center.  The Hurricane Intensity Index (HII) for Tropical Cyclone Mekunu was 13.9.  The Hurricane Size Index (HSI) was 21.9.  The Hurricane Wind Intensity Size Index (HWISI) was 35.8.

Tropical Cyclone Mekunu will move through an environment favorable for intensification during the next 24 to 36 hours.  Mekunu will move over water where the Sea Surface Temperature is near 30°C.  It will move near the western end of an upper level ridge.  The ridge will produce weak southerly winds which will blow toward the top of the circulation.  Those winds will cause some vertical wind shear, but the shear will not be strong enough to prevent further intensification.  Tropical Cyclone Makunu could strengthen into the equivalent of a major hurricane.

The upper level ridge steered Tropical Cyclone Mekunu toward the north-northwest on Wednesday and that general motion is expected to continue for several more days.   On its anticipated track Tropical Cyclone Mekunu could approach the coast of western Oman and eastern Yemen within 48 hours.  Mekunu will bring strong winds and locally heavy rain when it reaches the coast.

Tropical Cyclone Mekunu Intensifies Over the Arabian Sea

Tropical Cyclone Mekunu intensified over the Arabian Sea on Tuesday.  At 11:00 p.m. EDT on Tuesday the center of Tropical Cyclone Mekunu was located at latitude 11.0°N and longitude 55.9°E which put it about 120 miles (195 km) southeast of Socotra Island.  Mekunu was moving toward the 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 985 mb.

The circulation of Tropical Cyclone Mekunu became much better organized on Tuesday.  A primary rainband wrapped around the center of circulation and eye was evident at the center of circulation on microwave satellite images.  Several bands of showers and thunderstorms developed and began to revolve around the core of Tropical Cyclone Mekunu.  The strongest rainbands were in the western and northern parts of the circulation.  Storms near the core generated upper level divergence which pumped mass away from the tropical cyclone.  Winds to tropical storm force extended out about 95 miles (155 km) from the center of circulation.

Tropical Cyclone Mekunu will move through an environment favorable for intensification during the next several days.  Mekunu will move over water where the Sea Surface Temperature is near 30°C.  It is moving around the western end of an upper level ridge.  The ridge is producing southerly winds which were blowing toward the top of the circulation.  Those winds will generate some vertical shear, but the shear will not be strong enough to prevent intensification.  Tropical Cyclone Mekunu is likely to intensify into the equivalent of a hurricane/typhoon during the next 24 hours.

The upper level ridge was steering Tropical Cyclone Mekunu toward the northwest.  A general motion toward the north-northwest is forecast for the next two to three days.  On its anticipated track Tropical Cyclone Mekunu will approach Socotra Island within 24 hours.  The strongest part of Mekunu will pass over Socotra Island.  It will bring gusty winds and locally heavy rain.  Flash floods could occur.  Tropical Cyclone Mekunu could approach the coast of western Oman and eastern Yemen in about three days.

Tropical Cyclone 02A Develops Over the Arabian Sea

Tropical Cyclone 02A formed over the Arabian Sea on Monday.  At 11:00 p.m. EDT on Monday the center of Tropical Cyclone 02A was located at latitude 9.3°N and longitude 57.1°E which put it about 285 miles (460 km) southeast of Socotra Island.  It 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 999 mb.

A center of circulation began to consolidate within a broader area of low pressure over the Arabian Sea on Monday.  Thunderstorms formed west and north of the developing center.  There were fewer thunderstorms in the eastern half of the circulation.  Storms west of the center began to organize into several bands and the circulation began to exhibit the characteristics of a tropical cyclone.  Thunderstorms near the core of the circulation began to generate upper level divergence which was pumping mass away from the developing tropical cyclone.  Winds to tropical storm force extended out about 110 miles (175 km) from the center of circulation.

Tropical Cyclone 02A will move through an area favorable for intensification during the next several days.  It will move over water where the Sea Surface Temperature is near 30°C.  An upper level ridge is east of the tropical cyclone.  The ridge is producing southerly winds which are blowing toward of the top of the circulation.  Those winds will generate some vertical wind shear, but the shear will not be strong enough to prevent intensification.  The circulation of Tropical Cyclone 02A will continue to organize on Tuesday.  It will strengthen and it could become the equivalent of a hurricane/typhoon by the middle of the week.

The ridge to the east of Tropical Cyclone 02A is steering the cyclone toward the northwest.  A general motion toward the north-northwest is expected during the next two or three days.  On its anticipated track the center of Tropical Cyclone 02A will pass west of Socotra Island.  It could bring gusty winds and locally heavy rain to that location.  Tropical Cyclone 02A could approach western Oman and eastern Yemen in three or four days.  It could be the equivalent of a hurricane/typhoon at that time.

Tropical Cyclone Vardah Reorganizes Over the Arabian Sea

After moving across southern India and weakening Tropical Cyclone Vardah began to reorganize over the eastern Arabian Sea on Thursday.  At 7:00 p.m. EST on Thursday the center of Tropical Cyclone Vardah was located near latitude 11.0°N and longitude 68.0°E which put it about 1140 miles (1840 km) east of Baargaal, Somalia.  Vardah was moving toward the west at 7 m.p.h. (11 km/h).  The maximum sustained wind speed was 25 m.p.h. (40 km/h) and there were wind gusts to 35 m.p.h. (55 km/h).  The minimum surface pressure was 1007 mb.

Tropical Cyclone Vardah retained a well organized low level circulation as it moved across southern India and into the eastern Arabian Sea.  However, almost all of the showers and thunderstorms dissipated as the cyclone crossed over land.  A few showers and thunderstorms began to redevelop about 24 hours ago.  There are now several rainbands that are spiraling around the circulation and stronger thunderstorms are forming in some of those bands.  The thunderstorms are beginning to produce upper level divergence.

Tropical Cyclone Vardah will be moving through an environment that is favorable for intensification.  Vardah will be moving over water where the Sea Surface Temperature is near 28°C.  The upper level winds are weak and there is not much vertical wind shear.  Tropical Cyclone Vardah should continue to redevelop during the next 24 hours.

A subtropical ridge to the north of Vardah has been steering the tropical cyclone toward the west and that general motion is expected to continue.  On its anticipated track Tropical Cyclone Vardah will move across the Arabian Sea toward eastern Africa during the next several days.

Weaker Tropical Cyclone Megh Close to Landfall in Yemen

Drier air from the Arabian peninsula finally entered the circulation of Tropical Cyclone Megh and most of the convection weakened on Monday.  At 10:00 p.m. EDT on Monday the center of Tropical Cyclone Megh was located at latitude 13.0°N and longitude 47.0°E which put it about 150 miles (240 km) east of Aden (Adan), Yemen.  Megh 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 990 mb.

As Tropical Cyclone Megh moved closer to the coast of Yemen, it began to draw in drier air from the Arabian peninsula.  As the drier air penetrated the circulation, it cut off the energy from the convection and most of the thunderstorms dissipated.  Without a continuous supply of new energy Megh weakened and the wind speeds decreased.  As the center of circulation approached the coast, friction over land increased low level convergence and new thunderstorms formed near the center.  Those storms are producing winds to tropical storm force over the Gulf of Aden.

Tropical Cyclone Megh is moving around the western end of a subtropical ridge.  The ridge is steering Megh toward the west-northwest.   Tropical Cyclone Megh will make landfall near Ahwar, Yemen in a few hours.  It is still capable of producing locally heavy rain and causing flash flooding.

Tropical Cyclone Megh Hits Socotra Island and Brushes Somalia

Tropical Cyclone Megh moved over Socotra Island, Yemen on Sunday and it passed near the northeast coast of Somalia.  At 10:00 p.m. EDT on Sunday the center of Tropical Cyclone Megh was located at latitude 12.3°N and longitude 50.6°E which put it about 375 miles (605 km) east of Aden (Adan), Yemen and about 35 miles (55 km) north of Cape Guardafui, Somalia.  Megh was moving toward the west at 13 m.p.h. (21 km/h).  The maximum sustained wind speed was 105 m.p.h. (170 km/h) and there were wind gusts to 125 m.p.h. (200 km/h).  The minimum surface pressure was 957 mb.

Although Tropical Cyclone Megh weakened as it moved across Socotra Island, it remains a small, well organized storm.  Megh still has an eye surrounded by a ring of strong thunderstorms.  Those storm are generating upper level divergence which is pumping out mass in all direction.

Tropical Cyclone Megh is over warm water and the upper level winds are light.  The only negative factors are the proximity to Somalia and drier air over the Arabian peninsula.  As long as the center of Tropical Cyclone Megh stays north of Somalia, it will likely retain most of its intensity.  When Megh starts to get closer to the coast of Yemen, it will begin to draw in some drier air and weaken more rapidly.  Vertical wind shear could also increase in 24 to 36 hours, which would further speed the weakening process.

A subtropical ridge has been steering Megh toward the west and that general motion is expected to continue for another day or so.  After that time Megh will reach the western end of the ridge and start to move toward the northwest.  On its expected track, Tropical Cyclone Megh could approach the coast of Yemen on Tuesday.  It could still be the equivalent of a hurricane at that time.

Tropical Cyclone Megh may have caused significant damage on Socotra Island.  It will be capable of producing wind damage when it reaches Yemen, but heavy rain and flooding will be the greater risk.

Dangerous Tropical Cyclone Megh Nearing Socotra Island

Megh intensified rapidly Saturday into a dangerous tropical cyclone as it neared Socotra Island, Yemen.  At 10:00 p.m. EDT on Saturday the center of Tropical Cyclone Megh was located at latitude 12.8°N and longitude 55.5°E which put it about 105 miles (170 km) east of Socotra Island, Yemen.  Megh was moving toward the west at 13 m.p.h. (21 km/h).  The maximum sustained wind speed was 130 m.p.h. (210 km/h) and there were wind gusts to 150 m.p.h. (240 km/h).  The minimum surface pressure was 939 mb.

Tropical Cyclone Megh is the equivalent of a major hurricane even though it is a small storm.  Megh is a very symmetrical cyclone.  It has a five mile (8 km) wide eye which is surrounded by a ring of strong thunderstorms.  The convection in the core is generating upper level divergence which in pumping out mass.  Tropical storm force winds extend out 50 miles (80 km) from the center.

Tropical Cyclone Megh will remain in a favorable environment until it reaches Socotra Island.  It is over water where the Sea Surface Temperature is near 28°C.  The upper level winds are light and there is vertical wind shear.  Megh could intensify further until it reaches Socotra.  It should weaken when the core of the circulation interacts with island.

A subtropical ridge north of Megh is steering the tropical cyclone toward the west and that general motion is expected to continue for several more days.  On its anticipated track Tropical Cyclone Megh will reach Socotra Island in a few hours.  it is capable of producing wind damage and flooding.  Since Tropical Cyclone Chapala recently caused damage on Socotra, the impact of Tropical Cyclone Megh could be significant.

Tropical Cyclone Megh Moving Slowly West Over the Arabian Sea

Tropical Cyclone Megh moved slowly westward over the Arabian Sea on Friday.  At 4:00 p.m. EDT on Friday the center of Tropical Cyclone Megh was located at latitude 12.9°N and longitude 60.4°E which put it about 420 miles (680 km) east of Socotra Island, Yemen.  Megh was moving toward the west at 7 m.p.h. (11 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 990 mb.

The convection around Tropical Cyclone Megh diminished earlier today, but more thunderstorms have formed near the center of circulation during the past few hours.  Megh has a well formed, symmetrical circulation with an eyelike feature at the center.  It is a small cyclone and tropical storm force winds only extend out about 50 miles (80 km) from the center.  The new thunderstorms near the center of circulation are starting to generate upper level divergence.

Aside from the possible drier air, the environment surrounding Tropical Cyclone Megh is favorable for intensification,  It is over water where the Sea Surface Temperature is near 28°C.  The winds in the upper levels are light and there is not much vertical wind shear.  Now that thunderstorms are redeveloping near the core of the circulation, Tropical  Cyclone Megh should begin to intensify and it is still likely to reach hurricane intensity in a day or two.

A ridge north of Megh is steering the tropical cyclone toward the west and that general motion is expected to continue during the weekend.  On its anticipated track, Tropical Cyclone Megh could approach Socotra Island, Yemen in about 36 hours.  It could be the equivalent of a hurricane at that time.  Given the prior damage caused by Tropical Cyclone Chapala, Megh could have a significant impact on Socotra Island.