User login

Typhoon NIDA (26W) (26W) CAT 1---12PM Dec 01: 20.4N 137.9E 140 kph NW @ 05 kph Western Pacific

By: Gene Davis Posted: December-01-2009 in
Gene Davis

Typhoon NIDA continues to weaken as it moves slowly northwestward.

*Cooler dry air, increasing upper-level winds (aka. Vertical Wind Shear) and slightly lower sea surface temperatures are the ones that contribute for the weakening of NIDA.

*Do not use this for life or death decision. This advisory is intended for additional information purposes only. Kindly refer to your country's official weather agency for local warnings, advisories & bulletins.

Current Storm Information

Time/Date: 12:00 PM PST Tue Dec 01 2009
Location of Eye: 20.4º N Lat 137.9º E Lon
Distance 1: 600 km (323 nm) SW of Iwo To
Distance 2: 300 km (162 nm) East of P.A.R.
Distance 3: 1,655 km (893 nm) East of Batanes, PH
MaxWinds (1-min avg): 140 kph (75 kts) near the center
Peak Wind Gusts: 165 kph (90 kts)
6-hr Rain Amounts (near the center): 250 mm [Heavy]
Minimum Central Pressure: 967 millibars (hPa)
Saffir-Simpson Typhoon Scale: Category 1
Present Movement: NW @ 05 kph (03 kts)
Towards: Western Pacific Ocean
Size (in Diameter): 760 km (410 nm) / Large
Max Sea Wave Height (near center): 30 ft (9.1 m)
Coastal Storm Surge Height: 4-5 feet [1.2-1.7 m]

Forecast Outlook: NIDA is expected to continue moving WNW and weaken fast within the next 2 days. This system will be downgraded into a Tropical Storm tomorrow morning as cold dry air, increasing upper level winds and cooler sea surface temperatures enters and affects its circulation. It will then weaken into a depression while recurving towards the NE on Thursday morning (8AM Dec 03: 23.4N 136.2E). The 2 to 3-day Medium-Range Forecast shows the system becoming an Extratropical Cyclone while accelerating NE-ward on Friday morning (8AM Dec 04: 27.8N 140.8E). This recurvature scenario is due to an appoaching middle-latitude low pressure (aka. frontal system) digging from the north. Please be reminded that the Forecast Outlook changes every 6 hours, so a turn to the left or right of its future track and other possibilities must be considered.

+ Effects & Hazards: NIDA is not affecting any major islands at this time. 6-hr total rainfall amounts of 5 up to 100 mm (light to moderate rain) can be expected along the outer and inner bands...with isolated amounts of 250 mm (heavy rain) just north of NIDA's ill-defined Eye or along the Northern EyeWall. Click here to view the latest NOAA's eTRaP graphic on the storm's rainfall amount.

+ Current NE Monsoon Intensity: MODERATE >> Mostly cloudy skies with passing occasional rains and squalls (subasko) can be expected along the following affected areas: EASTERN LUZON, BICOL REGION, MASBATE AND NORTHERN VISAYAS. Light to moderate northeasterly winds (not in excess of 40 kph) can be expected on these areas.


Whats on! See our help pages - add your own events

This location does not have any events. Why not add one here!