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Sep
30
2013

Tropical Cyclone Activity Report – Pacific / Indian Oceans

Typhoon 20W (Wutip) is dissipating over Vietnam…located about 175 NM northwest of Da Nang, Vietnam (Sustained winds of 80 knots…with gusts to near 100 knots) – Final Warning

Tropical depression 21W (Sepat) is active over the NW Pacific…located about 485 NM south-southeast of Yokosuka, Japan (Sustained winds of 30 knots…with gusts to near 40 knots)

Tropical depression 22W is active in the Philippine Sea…located about 398 NM north-northwest of Koror, Palau (Sustained winds of 30 knots…with gusts to near 40 knots)

PDC Global Hazards Atlas displaying 3 hour precipitation accumulation, forecast positions, segments, and error cone for   retiring typhoon Wutip…inland over Vietnam

PDC Global Hazards Atlas displaying 3 hour precipitation accumulation, forecast positions, segments, and error cone for retiring typhoon Wutip…inland over Vietnam

Tropical storm 20W (Wutip) is dissipating inland over Vietnam, according to the Joint Typhoon Warning Center (JTWC). This retiring typhoon was located about 175 NM northwest of Da Nang, Vietnam, and has been tracking westward at a fast paced 18 mph over the last six hours. The JTWC indicates that 20W has made landfall, and is starting to rapidly deteriorate, due to its land interaction over VN, and soon to be Laos. There will be strong gusty winds, heavy flooding rainfall, which may cause flash flooding and mudslides as it progresses over land. This is the final warning being given by the JTWC on this system.

 

PDC Global Hazards Atlas displaying 3 hour precipitation accumulation, forecast positions, segments, and error cone for tropical depression Sepat…over the northwestern Pacific

PDC Global Hazards Atlas displaying 3 hour precipitation accumulation, forecast positions, segments, and error cone for tropical depression Sepat…over the northwestern Pacific

Meanwhile, tropical depression 21W (Sepat) is now active in the northeastern Pacific, located approximately 485 NM south-southeast of Yokosuka, Japan.  This tropical depression is expected to remain in a marginal environment throughout the forecast period, with only a slight increase in strength. The JTWC notes that there is a cold pool of sea water in the upcoming path of 21W, which should impede development. Nonetheless, it may reach the tropical storm category within 24 hours, although only briefly before it transitions into the prevailing westerlies…and takes on extra-tropical characteristics.

 

PDC Global Hazards Atlas displaying 3 hour precipitation accumulation, forecast positions, segments, and error cone for tropical depression 22W…over the Philippine Sea

PDC Global Hazards Atlas displaying 3 hour precipitation accumulation, forecast positions, segments, and error cone for tropical depression 22W…over the Philippine Sea

Tropical depression 22W has spun up in the Philippine Sea, located approximately 398 NM north-northwest of Koror, Palau Island. The JTWC indicates that a favorable environmental conditions are ahead, including good outflow aloft, low vertical shear, and warm sea water temperatures as well. We can expect strengthening, becoming a typhoon within 36 hours.

The JTWC forecast track shows 22W moving over or close to the following islands: Minami Daito Jima, Kadena, and Amami Oshima. This system is forecast to reach 95 knots, with gusts to 115 knots, which will make it a very dangerous storm. Ships at sea, and island residents on the islands noted above, should be keeping a close eye on this approaching tropical cyclone.

 

Eastern North Pacific

TROPICAL WEATHER OUTLOOK
NWS NATIONAL HURRICANE CENTER MIAMI FL

FOR THE EASTERN NORTH PACIFIC…EAST OF 140 DEGREES WEST LONGITUDE:

There are no current tropical cyclones

NHC graphical Tropical Weather Outlook Map

Eastern Pacific Satellite Image

Central North Pacific

TROPICAL WEATHER OUTLOOK
NWS NATIONAL HURRICANE CENTER HONOLULU, HAWAII

FOR THE CENTRAL NORTH PACIFIC…BETWEEN 140W AND 180:

There are no current tropical cyclones

CPHC Graphical Tropical Weather Outlook

Latest Central Pacific Satellite Image

Western North Pacific

Tropical storm 20W (Wutip)  Final Warning

JTWC textual forecast
JTWC graphical track map

NOAA – satellite image
Pacific Disaster Center’s Global Hazards Atlas

Tropical depression 21W (Sepat) 

JTWC textual forecast
JTWC graphical track map

NOAA – satellite image
Pacific Disaster Center’s Global Hazards Atlas

Tropical storm 22W 

JTWC textual forecast
JTWC graphical track map

NOAA – satellite image
Pacific Disaster Center’s Global Hazards Atlas

Satellite image of this area

South Pacific

There are no current tropical cyclones

Satellite image of this area

North Indian Ocean

There are no current tropical cyclones

Satellite image of this area

South Indian Ocean

There are no current tropical cyclones

Satellite image of this area

North Arabian Sea

There are no current tropical cyclones

Satellite image of this area