TROPICAL DEPRESSION 15W [UNNAMED]

15W (UNNAMED) MAX WIND SPEED PER AGENCY:

+ Japan (JMA/10-min avg): 55 km/hr
+ USA (JTWC/1-min avg): 45 km/hr TROPICAL DEPRESSION 15W [UNNAMED]
T2K PUBLIC ADVISORY NUMBER 002
6:00 PM PST (10:00 GMT) Sat 12 September 2009
Source: T2K ANALYSIS / JTWC WARNING #002
# View: Advisory Archives (2004-2009)

Tropical Depression 15W (UNNAMED) now moving westward as it intensfies...threatens the Northern Mariana Islands.

*Residents and visitors along the Northern Mariana Islands particularly Saipan should closely monitor the progress of 15W.

*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: 15W is expected to move on a more Westward track and intensify into a Tropical Storm within in the next 12 to 24 hours. The 2 to 5-day Long-Range Forecast shows 15W continuing moving on a westerly track...reaching Typhoon strength on Monday afternoon Sep 14. It shall pass over or very close to Saipan on Monday evening and shall be west of Northern Marianas by Tuesday Sep 15. This tropical cyclone shall start to turn more WNW-ward as it approaches the Philippine Area of Responsibility (PAR) Thursday afternoon Sep 17.

+ Effects: 15W's westernmost developing outer rainbands approaching the Northern Marianas. Occasional rains w/ passing thunderstorms can be expected across the island chain beginning tonight. 1-day rainfall accumulations of 50 up to 200 mm can be expected along 15W's rainbands.

[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: 6:00 PM PST Sat September 12 2009
Location of Center: 14.6º N Lat 152.4º E Lon
Distance 1: 725 km (390 nm) ESE of Saipan, CNMI
Distance 2: 830 km (448 nm) ENE of Guam, CNMI
Distance 3: 1,870 km (1,010 nm) East of P.A.R.
Distance 4: 3,030 km (1,635 nm) East of Southern Luzon
MaxWinds (1-min avg): 55 kph (30 kts) near the center
Peak Wind Gusts: 75 kph (40 kts)
Saffir-Simpson Scale: Tropical Depression
Coastal Storm Surge Height: 0 feet [0 m]
Central Pressure: 1000 millibars (hPa)
Recent Movement: West @ 11 kph (06 kts)
General Direction: Northern Mariana Islands
Size (in Diameter): 600 km (325 nm) / Average
Max Sea Wave Height (near center): 8 ft (2.4 m)
Wunder TrackMap (for Public): 2 PM PST Sat Sep 12
JTWC Ship Avoidance TrackMap: 06Z Sat Sep 12
TSR Wind Probabilities: Current to 5-days Ahead
Zoomed Satellite Pic: Near Real-Time
Wunderground Animation: 6-12 hr. GIF Loop