Monday, October 08, 2012

TS PRAPIROON (22W) - Update #002


for Monday, 08 October 2012 [7:46 AM PhT]



Issued: 12:00 NN PhT (04:00 GMT) Monday 08 Oct 2012
Next Update: 6:00 PM PhT (10:00 GMT) Monday 08 Oct 2012

Tropical Storm PRAPIROON intensifying rapidly as it moves slowly westward over the Philippine Sea. This system remains far away at sea and not yet a threat to the Philippine Islands.

Residents and visitors along Northern Luzon, Taiwan and Okinawa should closely monitor the development of Prapiroon (22W).

Do not use this for life or death decision. This update is intended for additional information purposes only. Kindly refer to your national weather agency for official warnings, advisories or bulletins.


As of 12 noon today, the center of Tropical Storm Prapiroon (22W) was located over the open sea of the Western Pacific Ocean, near the northeastern boundary of the Philippine Area of Responsibility (PAR)...about 1133 km west-northwest of Guam or 1385 km east-southeast of Santa Ana=, Cagayan and is currently moving westward slowly with a forward speed of 09 km/hr.

Maximum Sustained Winds (1-min. avg) have rapidly increased to 85 km/hr near the center with higher gusts. Tropical Storm Force Winds (62-100 km/hr) extend outward up to 110 kilometers from the center. These winds remains over the open sea and are not yet affecting any land areas. Prapiroon (22W) is now a large-sized tropical cyclone with a diameter of 780 kilometers across. The 24-hour rainfall accumulation near the center of Prapiroon (22W) is estimated to be heavy (200 mm).


Prapiroon (22W) is expected to continue moving on a slow westward track during the next 2 days with a turn to the northwest on Day 3. On the forecast track, the center of Prapiroon (22W) will remain over the open sea through Thursday.

Continued strengthening of its wind speed is expected during the next 3 days as the system moves over warm sea surface temperatures...and Prapiroon (22W) could become a minimal typhoon on Tuesday.

The following is the summary of the 3-day forecast outlook on this system:

TUESDAY NOON: Becomes a typhoon as it moves very slowly across the North Philippine Sea...about 1185 km east-southeast of Santa Ana, Cagayan [12PM OCT 09: 17.9N 133.4E @ 130kph].
WEDNESDAY NOON: Strengthens to a Category 2 typhoon as it maintains its slow westward track...about 1079 km east-southeast of Santa Ana, Cagayan [12PM OCT 10: 17.9N 132.4E @ 160kph].
THURSDAY NOON: Nears Category 3 strength, turns northwestward while over North Philippine Sea...about 992 east of Santa Ana, Cagayan [12PM OCT 11: 18.3N 131.6E @ 175kph].

*Please be reminded that the Forecast Outlook changes every 6 hours, and the Day 3 Forecast Track have an average error of 250 km...while the wind speed forecast error, averages 35 kph per day. Therefore, a turn to the left or right of its future track and changes in its wind speed must be anticipated from time to time.


Below is the summary of the storm's parts and its hazards affecting specific areas. You can also view this image link for you to understand the parts.

INNER RAINBANDS - over water (Western Pacific Ocean)...not yet affecting any land areas. Tropical Storm Conditions with Tropical Storm Force Winds (62-117 kph) will be expected along these bands.
OUTER RAINBANDS - over water (Western Pacific Ocean)...not yet affecting any land areas. Cloudy/Rainy Conditions with moderate to strong winds (<62 kph) will be expected along these bands (click here to know more about Rainbands).
24HR TOTAL RAINFALL ACCUMULATION - from 5 up to 100 mm (low to heavy rainfall) can be expected along areas affected by the outer & inner rainbands (see above)...with isolated amounts of 101 to 200 mm (heavy) along areas near the center of Prapiroon (22W).

Important Note: Please keep in mind that the above forecast outlook, effects-hazards, current monsoon intensity, & tropical cyclone watch changes every 6 to 12 hrs!


Time/Date: 12:00 NN PhT Mon October 08, 2012
Class/Name: Tropical Storm Prapiroon (22W)
Location of Center: 17.9º N Lat 135.3º E Lon
Distance 1: 32 km (E) closer to P.A.R.
Distance 2: 1133 km (WNW) away from Guam, CNMI
Distance 3: 1228 km (SE) away from Okinawa, Japan
Distance 4: 1360 km (ENE) closer to Palanan Bay, Isabela
Distance 5: 1385 km (ESE) closer to Santa Ana, Cagayan
Distance 6: 1426 km (ESE) closer to Basco, Batanes
Distance 7: 1440 km (E) closer to Tuguegarao City
MaxWinds (1-min avg): 85 kph near the center
Peak Wind Gusts: 100 kph
Present Movement: West @ 09 kph
Towards: North Philippine Sea
24hr Rainfall Accum (near center): Heavy [200 mm]
Minimum Central Pressure: 989 millibars (hPa)
Size (in Diameter): 780 km [Large]
Max Sea Wave Height (near center): 13 feet
Possible Coastal Storm Surge Height: 1-3 ft (0.3-0.9 m)

T2K StormTracks (for Public): GIF | Google Map (Flash)








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

For the complete details on TS PRAPIROON (22W)...go visit our website @:


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