Friday, May 27, 2011

TYPHOON SONGDA (CHEDENG) as of 27 May @ 10pm

As of 10pm tonight, CHEDENG loses Super Typhoon strength rapidly as wind gusts dropped to 275 kph. The system is still moving NNW at 20 kph. Threat to Okinawa and the Ryukyu Islands of Japan remains. The system has initially weakened sooner than previously expected. Typhoon CHEDENG is about 110 km ENE of Basco, Batanes. CHEDENG is expected to lose strength further in the next hours while moving switfly along the Philippine Sea just NE of the Batanes Group of Islands and SE of Taiwan. CHEDENG's huge rainbands are affecting Isabela, Cagayan, the Batanes and Babuyan Group of Islands and the rest of Northern and Central Luzon. The system's northwestern rainbands is now reaching Eastern Taiwan. Metro Manila, Bicol, Palawan, Visayas and Western Mindanao are still affected by the Southwest Moonsoon currently being enhanced by Typhoon CHEDENG. The system continues to approach the Northern Philippine Area of Responsiblity and shall begin turning to the north east.

At 8am tomorrow – 28 May, it shall be 380 km NE of Basco, Batanes or 320 km ESE of Taipei, Taiwan with wind gusts dropping to 260 kph.

On 28 May at 8pm, CHEDENG is forecast to be 100 km WNW of Okinawa, Japan or outside the Northern Philippine Area of Responsibility. Wind gusts drops further to 210 kph.


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2-Day SUPER TYPHOON CHEDENG(Songda) Forecast Positions


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AREAS HAVING PUBLIC STORM SIGNAL WARNING

STORM SIGNAL # 3:
Batanes Group of Islands

STORM SIGNAL # 2:
Babuyan Group of Islands

STORM SIGNAL # 1:
Apayao
Cagayan


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FORECAST ANALYSIS AND EFFECTS:

CHEDENG has been accelerating NNW further into the Northern Philippine Sea or just NE of the Batanes and Babuyan Group of Islands. Rapid weakening is expected as the system continues to accelerate turning to the NE later. CHEDENG is still churning just a few hundred kilometers away from Batanes and Babuyan Group of Islands. Stormy weather tonight in these areas. Very strong far-fetched waves are expected to hit the abovementioned islands becoming apparent over the Luzon Ridge. Expect rains in Luzon (becoming very stormy in the extreme Northern portion), Visayas and Western Mindanao that could trigger flashfloods. Strong to gale force winds (55 kph or higher) are expected becoming stronger in extreme Northern Luzon. CHEDENG shall eventually lose strength as it tracks more to the north and eventually turning to the north east.

Cooler sea surface temperature and increased vertical wind shear shall weaken the system rapidly as it tracks out of the PAR and into Okinawa, Japan. CHEDENG shall be out of the country by 28 May. Extra tropical transition is also expected beginning 30 May. It is shall to recurve to the northeast missing Taiwan.

Chedeng shall be in the vicinity of Okinawa sometime during the night of 28 May and shall move northeast towards the Ryukyu Islands at midnight or early morning of 29 May. Expect stormy weather in these areas over the weekend.

Expect rough to very rough sea conditions along these areas. FISHING BOATS AND OTHER SMALL SEACRAFTS ARE ADVISED NOT TO VENTURE OUT INTO THE SEA WHILE LARGER SEA VESSELS ARE ALERTED AGAINST BIG WAVES.

In the Bicol region, the rest of Visayas and Mindanao, improving weather condition is expected as Super Typhoon CHEDENG continues to move away.

Forecast models are still in excellent agreement with a NO LANDFALL Scenario in the Philippines for Typhoon SONGDA/CHEDENG. However, different results in the extended forecast (30 May) were generated with some models bringing CHEDENG over Japan while other models favoring an open water scenario just South of Japan. CHEDENG shall continue to accelerate later in the forecast and eventually lose strength.

P.S.
CHEDENG(Songda) is a strong and dangerous storm. If this hits land, it would be a deadly catastrophe. The public and the disaster coordinating councils concerned are advised to take appropriate actions and precautionary measures.

TRACKING MAP OF TYPHOON CHEDENG(Songda)


SATELLITE IMAGE as of 27 May @ 11pm

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