Friday, December 05, 2014

Super Typhoon HAGUPIT (RUBY) Update #007


for Friday, 05 December 2014 [2:36 AM PhT]


Issued at: 1:30 AM PhT (17:30 GMT) Friday 05 December 2014
Next Update: Friday Mid-morning, 05 December 2014

Extremely Catastrophic Super Typhoon HAGUPIT (RUBY) has weakened slightly as it maintains its west-northwest track across the Philippine Sea...remains a serious threat to Bicol Region and Eastern Visayas.

This super typhoon will enhance the Northeast Monsoon (Hanging Amihan) - bringing mostly cloudy and windy conditions and cooler temperatures across Northern and Central Luzon beginning Friday...becoming more frequent with possible occasional slight to moderate rains along eastern sections of Cagayan, Isabela, Aurora, and Northern Quezon. The threat of flash floods and landslides are likely in hazard-prone areas especially along river banks and mountain slopes of the affected areas. Residents are advised to take necessary precautions.

Residents and visitors along Southern Luzon, Visayas and Northeastern Mindanao should closely monitor the development of Hagupit (Ruby).

Information based on data collected by WeatherPhilippines Foundation, Inc. shall not be taken as official data. Weather information broadcasted and distributed by PAGASA remains as official data. WeatherPhilippines shall not be responsible for the private use and reliance of its weather information.


Below are the regions or places in the Philippines that could be affected or that are being affected by the hazards generated by the current tropical cyclone.


  • Heavy Rains (50-100 mm): Rest of Bicol Region incl. Masbate, Eastern Visayas, and Northern Caraga incl. Dinagat and Siargao Islands - beginning Friday Evening (Dec 05). Read more...
  • Moderate to Heavy Rains (30-50 mm): Northern Bicol, Bondoc Peninsula, Northeastern Panay, Northern Negros, Northern and Central Cebu, Bohol, portions of Northern Mindanao, and the Rest of Caraga - beginning Friday evening (Dec 05). Read more...

  • Tropical Storm Force Winds (Gusts of 75-100 kph): Eastern Bicol, Eastern and Northern Samar - beginning Saturday morning (Dec 06). Read more...

  • Possible coastal storm surge flooding of 4-5.5 m (13-18 ft) above normal tide levels...accompanied by large and dangerous battering waves can be expected along the coastal, inland lakes and beach front areas of Eastern Visayas and Eastern Bicol Region beginning Saturday morning onwards. Extreme damage is likely on this type of storm surge. Danger from Rip Currents or Rip Tides can be expected along the beach-front areas of Surigao del Norte, Rest of Visayas, Ragay Gulf, Visayan Sea and Eastern Luzon. (click here to know more about Storm Surge).


As of 11:00 PM PhT today...1500 GMT...Dec 04.

Classification/Name: STY Hagupit (Ruby)
Location: Over the southeastern part of the Philippine Sea (near 11.2N 130.8E)
About: 535 km east-northeast of Siargao Island...or 590 km east-southeast of Borongan City, Eastern Samar
Maximum Sustained Winds (10-min avg): 260 kph near the center...Gustiness: 315 kph
24 hr. Rain Accumulation (near the center): 150 to 400 mm [Heavy to Extreme]
Minimum Central Pressure: 911 millibars (hPa)
Size of Circulation [Convective Cloud-Based, in diameter]: 1,005 km (Medium)
Area of Damaging Winds (95 kph or more): 140 km from the Center
Past Movement: West-Northwest @ 20 kph
Forecast Movement: West to WNW @ 14 kph
Towards: Samar-Bicol Area


STY Hagupit (Ruby) is expected to move slightly westward during the next 24 to 36 hours, turning back to the west-northwest slowly through 48 hours. On the forecast track, STY Hagupit (Ruby) will be traversing the west-central part of the Philippine Sea by Friday and Saturday...and shall move closer to the coast of Eastern and Northern Samar by Saturday evening.

STY Hagupit (Ruby) is expected to continue losing strength throughout the outlook period as it interacts with the cool dry air of the Northeast Monsoon. Advance Intensity Forecast (AIF) shows its 10-minute maximum sustained winds decreasing to 220 kph by Saturday evening.

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

FRIDAY EVENING: Maintains its weakening phase while moving slowly across the Philippine Sea...about 295 km east of Borongan City, Eastern Samar [8PM DEC 05: 11.6N 128.1E @ 240kph].
SATURDAY EVENING: Barely a Super Typhoon as it approaches the coast of Eastern and Northern Samar...about 110 km east-northeast of Borongan City, Eastern Samar [8PM DEC 06: 11.9N 126.5E @ 220kph].
SUNDAY EVENING: Weakens slightly as it traverses Northern Samar and San Bernardino Strait...about 25 km south of Sorsogon City [8PM DEC 07: 12.8N 124.1E @ 205kph].

*Please be reminded that the Forecast Outlook changes every 6 hours, and the Day 2 and 3 Forecast Track has an average error of 100 and 250 km respectively...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.

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


Time/Date: 11:00 PM PhT Thu Dec 04, 2014
Location of Eye: Near 11.2º N Lat 130.8º E Lon
Distance 1: 555 km ESE of Guiuan, Eastern Samar
Distance 2:635 km East of Tacloban City
Distance 3: 760 km ENE of Metro Cebu
Distance 4: 765 km SE of Virac, Catanduanes
Distance 5: 805 km ESE of Legazpi City









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

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