Sunday, September 13, 2009

TS CHOI-WAN (15W) rapidly intensifying east of Saipan... [Update #004]

 


for Sunday, 13 September 2009 [12:51 PM PST]

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Typhoon2000 (T2K) NEWS (Sat September 12 2009):

Now issuing 6-hrly advisories (except 12:00 AM) on the newly-formed TS CHOI-WAN (15W).


CHOI-WAN (15W) MAX WIND SPEED PER AGENCY:

+ USA (JTWC/1-min avg): 85 km/hr
+ Beijing (NMC/2-min avg): 75 km/hr
+ Taiwan (CWB/10-min avg): 65 km/hr
+ Japan (JMA/10-min avg): 65 km/hr
+ Korea (KMA/10-min avg): 65 km/hr
+ Japan (JMA/10-min avg): 65 km/hr

TROPICAL STORM CHOI-WAN [15W/0914]
T2K E-MAIL ADVISORY NUMBER 004

12:00 PM PST (04:00 GMT) Sun 13 September 2009
Source: T2K ANALYSIS / JTWC WARNING #005
View: Advisory Archives (2004-2009)

  • Tropical Storm CHOI-WAN (15W) rapidly intensifies...moving more Westward closer to Northern Marianas.

    *Residents and visitors along the Commonwealth of Northern Mariana Islands particularly Saipan should closely monitor the progress of CHOI-WAN.

    *Kindly refer to your local warnings & bulletins issued by your country's official weather agency. This advisory is intended for additional information purposes only.


    + Forecast Outlook: CHOI-WAN's forecast scenario remains unchanged...expected to continue moving on a westerly track and intensify further into a Category 1 Typhoon w/in in the next 12 to 24 hours. The 2 to 5-day Long-Range Forecast shows CHOI-WAN turning WNW, passing just south of Agrihan or north of Saipan tomorrow evening...becoming a Category 2 Typhoon w/ winds of 165 kph on Wednesday morning, Sep 16. CHOI-WAN shall continue to gain intensity to Category 3 (185 kph) status as it approaches the northeastern portion of the Philippine Area of Responsibility (PAR) on Friday Sep 18.

    + Effects: CHOI-WAN's southwesternmost outer rainbands has begun to move across Northern Marianas. Occasional rains w/ passing squalls & thunderstorms can be expected over the commonwealth island state today. 1-day rainfall accumulations of 50 up to 250 mm can be expected along CHOI-WAN's rainbands. Residents in low-lying areas & steep slopes must remain alert & seek evacuation for possible life-threatening flash floods, mudslides & landslides due to the anticipated heavy rains brought about by this system. Precautionary measures must be initiated if necessary.

    [Important Note: Please keep in mind that the above forecast outlook, effects, current monsoon intensity, & tropical cyclone watch changes every 6 to 12 hrs!] 
    Time/Date: 12:00 PM PST Sun September 13 2009
    Location of Center: 15.8º N Lat 149.4º E Lon
    Distance 1: 400 km (215 nm) ENE of Saipan, CNMI
    Distance 2: 560 km (303 nm) ENE of Guam, CNMI
    Distance 3: 1,540 km (832 nm) East of P.A.R.
    Distance 4: 2,915 km (1,573 nm) East of Luzon
    MaxWinds (1-min avg):
    85 kph (45 kts) near the center
    Peak Wind Gusts: 100 kph (55 kts)
    Saffir-Simpson Scale: Tropical Storm
    Coastal Storm Surge Height: 1-3 feet [0.3-0.9 m]
    Central Pressure: 989 millibars (hPa)
    Recent Movement: West @ 19 kph (10 kts)
    General Direction: Northern Mariana Islands
    Size (in Diameter): 925 km (500 nm) / Very Large
    Max Sea Wave Height (near center): 12 ft (3.6 m)
    NWS-Guam TrackMap (for Public): 11 AM PST Sun Sep 13
    JTWC Ship Avoidance TrackMap:
    00Z Sun Sep 13
    Multi-Agency Forecast TrackMap: 11 AM Sun Sep 13
    TSR Wind Probabilities: Current to 5-days Ahead
    Zoomed Satellite Pic:
    Near Real-Time
    Wunderground Animation: 6-12 hr. GIF Loop

  • JTWC 12, 24, 48 & 72 HR. FORECAST & REMARKS:

    8 PM (12 GMT) 13 SEPTEMBER: 16.2N 148.5E / 100-130 KPH (Tropical Storm) / W @ 09 KPH
  • 8 AM (00 GMT) 14 SEPTEMBER: 16.4N 147.4E / 120-150 KPH (Typhoon-Cat 1) / WNW @ 11 KPH
    8 AM (00 GMT) 15 SEPTEMBER: 17.8N 145.1E / 150-185 KPH (Typhoon-Cat 1) / WNW @ 15 KPH
    8 AM (00 GMT) 16 SEPTEMBER: 19.4N 142.1E / 165-205 KPH (Typhoon-Cat 2) / WNW @ 15 KPH

    REMARKS: 8 AM (00 GMT) 13 SEPTEMBER POSITION: 16.0N 150.0E.
    ^ANIMATED MULTISPECTRAL IMAGERY SHOWS MULTIPLE SPIRAL BANDS
    WRAPPING INTO DEEP, CENTRAL CONVECTION. A 122104Z SSMIS MICROWAVE
    IMAGE ALSO RELECTS A CENTRALIZED CONVECTIVE STRUCTURE WITH THE
    DEEPEST CONVECTION WRAPPING INTO THE LOW LEVEL CIRCULATION CENTER
    (LLCC) FROM THE SOUTHWEST AND EAST. THE MULTISPECTRAL IMAGERY IN
    CONCERT WITH THE ANIMATED WATER VAPOR IMAGERY ALSO DEPICT A WELL-
    ESTABLISHED POLEWARD OUTFLOW CHANNEL INTO A TROPICAL UPPER TROPO-
    SPHERIC TROUGH (TUTT) CELL LOCATED AROUND 20N 170E. AS THE SYSTEM
    IS TRACKING UNDERNEATH THE AXIS OF THE NEAR EQUATORIAL RIDGE, THERE
    IS ALSO GREAT EQUATORWARD OUTFLOW AND MINIMAL VERTICAL WIND SHEAR.
    TS 15W HAS TRACKED ALONG THE SOUTHERN PERIPHERY OF THE SUBTROPICAL
    RIDGE AT 08 KNOTS OVER THE PAST SIX HOURS...
    (
    more)

    >> CHOI-WAN, meaning: Colorful CloudName contributed by: Hong Kong, China.
    __________________________________________________________________________________________________________________________________________________________

    RECENT WUNDERGROUND.COM TRACKING CHART
    :


    _________________________________________________________________________________________________________________

     
    RECENT MTSAT-1R SATELLITE IMAGE:


    > Image source:  NOAA SATELLITE CENTER 
    ____________________________________________________________________________________________________________________

    RECENT WUNDERGROUND SATELLITE ANIMATION:


    > Image source:  Wunderground.com (http://www.wunderground.com/)
    ____________________________________________________________________________________________________________________

    NOTE:
     
      ^ - JTWC commentary remarks (for Meteorologists) from their latest warning.
    __________________________________________________________________________________________

    >> To know the meteorological terminologies and acronyms used on this update visit the ff:

       
    http://typhoon2000.ph/tcterm.htm  
       
    http://www.nhc.noaa.gov/aboutgloss.shtml
        http://www.srh.noaa.gov/oun/severewx/glossary.php
        http://www.srh.weather.gov/fwd/glossarynation.html
        http://www.nhc.noaa.gov/acronyms.shtml
    __________________________________________________________________________________________

    For the complete details on TS CHOI-WAN (15W)...go visit our website @:

    >
    http://www.typhoon2000.com
    http://www.maybagyo.com

    :: Kindly view our site's disclaimer at: 
       
    http://www.typhoon2000.ph/disclaimer.htm


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