Friday, November 30, 2012

Typhoon BOPHA (26W) - Update #014


for Friday, 30 November 2012 [8:41 PM PhT]


Issued: 6:00 PM PhT (10:00 GMT) Friday 30 Nov 2012
Next Update: 6:00 AM PhT (22:00 GMT) Saturday 01 Dec 2012

Bopha becomes a well-developed typhoon as turns west-northwest...Yap and the Republic of Palau under serious threat.

Residents and visitors along Micronesia, Marianas and the Philippines should closely monitor the development of Bopha (26W).

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 5 pm today, the eye of Typhoon Bopha was located over Central Micronesia...about 952 km southeast of Colonia, Yap or 2,044 km east-southeast of Mindanao, Philippines...currently moving west-northwest with a forward speed of 19 km/hr in the general direction of Yap and Palau Area.

Maximum Sustained Winds (1-min. avg) have increased to 120 km/hr near the center with higher gusts. Tropical Storm Force Winds (62-100 km/hr) extend outward up to 130 kilometers from the center. Bopha is an average-sized tropical cyclone with a diameter of 555 kilometers across. The 24-hour rainfall accumulation near the center of TS Bopha is estimated to be extreme (400 mm).


Tropical Storm Bopha is expected to continue moving generally west-northwest for the next 24 hours with a slight increase in its forward speed...and this motion will continue during the next 2 to 3 days. On the forecast track, the core of Bopha is expected to continue moving across Central Micronesia through Saturday...approaching Western Micronesia on Sunday morning. The potential typhoon will pass just south of Yap and Ulithi Islands on Sunday afternoon...and very near Palau Islands on Monday early morning, as it enters the Philippine Area of Responsibility (PAR).

Bopha will continue to gain strength throughout the forecast period...and could become a Category 2 Typhoon on Saturday afternoon or evening.

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

SATURDAY AFTERNOON: Strengthens into a Category 2 Typhoon while heading towards Western Micronesia...maintains its WNW track...about 536 km southeast of Colonia, Yap Is., Federated State of Micronesia (FSM) [5PM DEC 01: 5.7N 141.1E @ 160kph].
SUNDAY AFTERNOON: Strengthens into a Category 3 Typhoon as it approaches Western Micronesia...about 276 km east of Koror, Republic of Palau [5PM DEC 02: 7.1N 137.0E @ 185kph].
MONDAY AFTERNOON: Enters the Philippine Area of Responsibility (PAR) as it moves across the Philippine Sea...threatens Eastern Visayas, Philippines...about 279 km northwest of Koror, Palau [5PM DEC 03: 8.6N 132.4E @ 205kph].

*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.

CLOUD-FILLED EYE - over water (Western Pacific Ocean). Possible calm and lull conditions (with <20 kph winds) will be expected inside the eye (click here to know more about the EYE).
EYEWALL - over water (Western Pacific Ocean)...not yet affecting any land areas.. Typhoon Conditions with Typhoon Force Winds (>118 kph) will be expected within this wall (click here to know more about the Eyewall).
INNER RAINBANDS - affecting and spreading across the smaller islands of Central Micronesia. Tropical Storm Conditions with Tropical Storm Force Winds (62-117 kph) will be expected along these bands.
OUTER RAINBANDS - affecting and spreading across the smaller islands of Central Micronesia. Tropical Depression 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 200 mm (slight to heavy rainfall) can be expected along areas affected by the outer & inner rainbands (see above)...with isolated amounts of 201 to 500 mm (heavy to extreme) along areas near the center of Bopha.
COASTAL STORM SURGE FLOODING - possible 4-5 ft (1.2-1.7 m) above normal tide levels...accompanied by large and dangerous battering waves can be expected along the coastal, inland lakes and beach front areas of Central Micronesia. Minimal damage is likely on this type of storm surge. Danger from Rip Currents or Rip Tides can be expected along the rest of the beach-front areas of Western Micronesia and the Marianas (click here to know more about Storm Surge).

Important Note: Please keep in mind that the above forecast outlook, effects and hazards summary changes every 6 to 12 hrs!


Time/Date: 5:00 PM PhT Fri November 30, 2012
Class/Name: TY Bopha (26W)
Location of Eye: 4.1º N Lat 144.8º E Lon
Distance 1: 952 km (SE) from Colonia, Yap
Distance 2: 1,045 km (S) from Hagatna, Guam
Distance 3: 1,087 km (E) from the P.A.R.
Distance 4: 1,190 km (ESE) from Koror, Palau
Distance 5: 2,044 km (ESE) from Mindanao, PH
Distance 6: 2,265 km (SE) from Samar, PH
Distance 7: 2,477 km (SE) from Bicol Region, PH
MaxWinds (1-min avg): 120 kph near the center
Peak Wind Gusts: 150 kph
Saffir-Simpson Hurricane Scale: Category 1
Present Movement: WNW @ 19 kph
Towards: Yap-Palau Area
24hr Rainfall Accum (near center): Extreme [400 mm]
Minimum Central Pressure: 974 millibars (hPa)
Size (in Diameter): 555 km [Average]
Max Sea Wave Height (near center): 25 feet
Possible Storm Surge Height: 4-5 ft (1.2-1.7 m)

T2K/WP 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 TY BOPHA...go visit our website @:


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