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West Pacific Tropical Action 2011


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Surprised this isn't getting more media attention, since Shanghai is one of the world's largest cities and will be very close to getting a direct hit. Latest JTWC advisory has a 90kt cyclone just offshore on Sunday morning.

post-188-0-12166700-1312550433.gif

However, their discussion also notes that the cyclone is expected to strengthen and that their track is to the right of model consensus:

TYPHOON (TY) 11W (MUIFA), LOCATED APPROXIMATELY 45 NM SOUTHWEST OF KADENA AIR BASE, JAPAN, HAS TRACKED NORTHWESTWARD AT 07 KNOTS OVER THE PAST SIX HOURS. ANIMATED MULTISPECTRAL SATELLITE IMAGERY (MSI) SHOWS A LARGE, RAGGED, AND CLOUD-FILLED EYE. A 050432Z AMSRE MICROWAVE IMAGE SHOWS SYMMETRICAL CONVECTIVE BANDING AROUND THE CENTER. THE INITIAL POSITION WAS BASED ON THE MSI AND A RADAR FIX FROM JAPAN WITH FAIR CONFIDENCE. THE INTENSITY WAS BASED ON PGTW, KNES, AND RJTD DVORAK ESTIMATES OF 80 TO 90 KNOTS AS WELL AS AN OBSERVATION FROM KADENA AB THAT INDICATES A PRESSURE OF 959 MB.

TY 11W MAINTAINS GOOD EQUATORWARD OUTFLOW AND A POLEWARD OUTFLOW CHANNEL INTO A MID-LATITUDE TROUGH TO THE NORTHEAST. TY 11W IS CURRENTLY TRACKING ALONG THE SOUTHWESTERN PERIPHERY OF A DEEP LAYER SUBTROPICAL RIDGE. THIS RIDGE IS SUPPORTED BY AN UPPER LEVEL 05/00Z OBSERVATION FROM NAZE INDICATING EAST-SOUTHEASTERLY WINDS AT 500 MB. TY MUIFA IS EXPECTED TO CONTINUE TRACKING GENERALLY NORTHWESTWARD AND TURN MORE POLEWARD AS A MID-LATITUDE TROUGH CURRENTLY OVER CHINA WEAKENS THE STEERING RIDGE. TY 11W IS FORECAST TO INTENSIFY WITHIN THE NEXT 36 HOURS AS OUTFLOW IMPROVES INTO THE APPROACHING MID-LATITUDE TROUGH AND AS IT TRACKS OVER WARM SEA SURFACE TEMPERATURES.

IT SHOULD REACH A MAXIMUM INTENSITY JUST SOUTH OF SHANGHAI AND THEN BEGIN TO WEAKEN BECAUSE OF LAND INTERACTION. SEA SURFACE TEMPERATURES DROP OFF IN THE GULF OF BOHAI AND VERTICAL WIND SHEAR WILL BEGIN TO INCREASE AFTER TAU 72, WHICH WILL CAUSE FURTHER WEAKENING. TY 11W WILL DISSIPATE AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND BY TAU 120.

NUMERICAL MODEL GUIDANCE IS IN GOOD AGREEMENT FOR THE INITIAL 72 HOURS AND THEN BEGIN TO SPREAD, ALTHOUGH ALL MODELS THEN TRACK THE SYSTEM INTO CHINA. THIS FORECAST IS SLIGHTLY

TO THE RIGHT OF MODEL CONSENSUS TO ACCOUNT FOR THE UKMO MODEL, WHICH IS THE OUTLIER TO WEST. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 050600Z IS 35 FEET. NEXT WARNINGS AT 051500Z, 052100Z, 060300Z AND 060900Z. REFER TO TROPICAL STORM 12W (MERBOK) WARNINGS (WTPN31 PGTW) FOR SIX-HOURLY UPDATES.//

GFS and CMC have a landfall near or south of Shanghai while EURO keeps the system just offshore.

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it's rapidly weakening though... i don't get why models and agencies were still optimistic of a slight re-intensification from Muifa, it's barely a typhoon now...:unsure:

btw, Muifa really stalled in Okinawa yesterday, some areas reporing as much as 1000mm or 40in of rain!!!:arrowhead:

strongest gust report i could find was around 170kph or 108mph in the NW part of the island... Kadena base reported around 97mph max gust... an islet that is very open stopped reporting Friday morning just when the strongest of winds were about to come, i'm guessing they had the stongest winds there... lowest pressure was around 952hPa...

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it's rapidly weakening though... i don't get why models and agencies were still optimistic of a slight re-intensification from Muifa, it's barely a typhoon now...:unsure:

btw, Muifa really stalled in Okinawa yesterday, some areas reporing as much as 1000mm or 40in of rain!!!:arrowhead:

strongest gust report i could find was around 170kph or 108mph in the NW part of the island... Kadena base reported around 97mph max gust... an islet that is very open stopped reporting Friday morning just when the strongest of winds were about to come, i'm guessing they had the stongest winds there... lowest pressure was around 952hPa...

sounds like they got a pretty solid hit

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  • 2 weeks later...

yup! still Cat 4-130kts according to JTWC but they'll have their 06z advisory soon so we'll see if they increase the winds...

such a shame really that this basin is not getting any attention..:arrowhead: i remember TWC's coverage of STY Megi last year and it was amazing... can't blame them though especially when you have a potential Cat 1 barreling towards the NYC area...:thumbsup:

anyway latest porno for Nanmadol:

perhaps an EWRC soon?? what do you think guys??

20110826.0448.aqua1.x.89h_1deg.14WNANMADOL.130kts-926mb-167N-1239E.68pc.jpg

latest close up VIS

2011WP14_1KMSRVIS_201108260632.GIF

some cooling of the cloud tops again, especially on the western flank; perhaps induced by the topography of E Luzon??

20110826.0701.mtsat2.x.ir1km.14WNANMADOL.130kts-926mb-167N-1239E.100pc.jpg

and here's another Doppler Radar shot from PAGASA as of 2am EST (06z)

299515_202169019846115_164659536930397_578254_2644124_n.jpg

and finally a wide VIS shot of the entire WPAC Basin...

a Cat 4 STY and a tropical storm (TS Talas) that could develop into a typhoon next week (JTWC saying monsoon depression)...

vis-l.jpg

absolutely amazing...!!!:pepsi:

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yup! still Cat 4-130kts according to JTWC but they'll have their 06z advisory soon so we'll see if they increase the winds...

such a shame really that this basin is not getting any attention..:arrowhead: i remember TWC's coverage of STY Megi last year and it was amazing... can't blame them though especially when you have a potential Cat 1 barreling towards the NYC area...:thumbsup:

anyway latest porno for Nanmadol:

perhaps an EWRC soon?? what do you think guys??

yep you can see the developing ring on both microwave and radar... should be soon within the next 12 hours.

and finally a wide VIS shot of the entire WPAC Basin...

a Cat 4 STY and a tropical storm (TS Talas) that could develop into a typhoon next week (JTWC saying monsoon depression)...

vis-l.jpg

absolutely amazing...!!!:pepsi:

Its a shame it doesn't look binary interaction is in the cards for these two systems anymore since Talas is expected to re-curve before we have the chance. This would be a particularly interesting case since the much stronger super typhoon is much smaller than the large tropical storm. These type of interactions are the most unpredictable because you have no idea if the more potent systems wins or the larger circulation.

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