Thursday, October 31, 2013

Typhoon KROSA (VINTA) Update #009


for Thursday, 31 October 2013 [1:23 PM PhT]


Issued at: 12:00 NN PhT (04:00 GMT) Thursday 31 October 2013
Next Update: 6:00 PM PhT (10:00 GMT) Thursday 31 October 2013

Typhoon KROSA (VINTA) intensified further...endangers Cagayan, Northern Isabela, Apayao and Ilocos Norte. Landfall is expected along Northern Cagayan before or after sunset today.

Residents and visitors along Luzon should closely monitor the development of TY Krosa (Vinta).

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


As of 11:00 am today, the eye of TY Krosa (Vinta) was located over the northwestern part of the Central Philippine Sea...about 145 km southeast of Santa Ana, Cagayan or 170 km east-northeast of Tuguegarao City, Cagayan...currently moving west with a forward speed of 20 km/hr towards Northern Cagayan-Ilocos Norte Area.

Maximum Sustained Winds (1-min. avg) have rapidly increased to 150 km/hr near the center with higher gusts. Typhoon Force Winds (118 km/hr or more) extend outward up to 45 kilometers from the center...and Tropical Storm Force Winds (63-117 km/hr) extend outward up to 165 kilometers. TY Krosa (Vinta) is a small-sized tropical cyclone with a diameter of 500 kilometers across.


TY Krosa (Vinta) is expected to maintain a generally west to west-northwest movement throughout the forecast period. On the forecast track, the core of TY Krosa (Vinta) will be approaching the eastern coast of Cagayan this afternoon...and will make landfall over Northern Cagayan before or after sunset today (between 5-7 PM). Krosa will cross Extreme Northern Luzon thru Northern Cagayan, Northern Apayao and Ilocos Norte this evening...and will emerge over the west coast of Ilocos Norte by early Friday morning. On Friday evening, the typhoon will exit the Philippine Area of Responsibility (PAR)...and will be over the South China Sea by early Saturday morning, as it moves towards Hainan Island.

TY Krosa (Vinta) will continue to gain strength through the next 12 hours... and will slightly weaken after traversing Northern Luzon. It will reintensify and could become a Category 2 Typhoon (TY) while over the South China Sea. Advance Intensity Forecast (AIF) shows its 1-minute maximum sustained winds increasing to a peak of 160 km/hr on Saturday morning.

The following is the summary of the 2-day forecast outlook and an extended 3-day forecast on this system:

FRIDAY MORNING: Weakens slightly after crossing Extreme Northern Luzon...emerges over the West Philippine Sea...about 110 km west-northwest of Laoag City, Ilocos Norte [8AM NOV 01: 18.4N 119.6E @ 140kph].
SATURDAY MORNING: Reintensifies to Category 2 as it moves across the West Philippine and South China Seas...already out of the PAR...about 410 km southeast of Hong Kong, China [8AM NOV 02: 18.8N 115.4E @ 160kph].
SUNDAY MORNING: Still intensifying as it approaches the eastern coast of Hainan Island turns more westerly...about 160 km east-southeast of Qionghai, Hainan [8AM NOV 03: 18.9N 112.0E @ 165kph].

*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.


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 the NW part of the Central Philippine Sea. Possible calm and lull conditions (with <20 kph winds) will be expected inside the eye (click here to know more about the EYE).
EYEWALL - where Typhoon Conditions with Typhoon Force Winds (>118 kph) will be expected within this wall. Affected Areas: NW part of the Central Philippine Sea (click here to know more about the Eyewall).
INNER RAINBANDS - where Tropical Storm Conditions with Tropical Storm Force Winds (63-100 kph) will be expected. Affected Areas: NW part of the Central Philippine Sea.
OUTER RAINBANDS - where Tropical Depression Conditions with light, moderate to strong winds (30-62 kph) will be expected. Affected Areas: Cagayan, Isabela, Northern Aurora and NW part of the Central Philippine Sea. (click here to know more about Rainbands).
24HR TOTAL RAINFALL ACCUMULATION - from 5 up to 100 mm (slight 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 Krosa (Vinta).
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 Eastern Cagayan, Eastern Isabela and Eastern Aurora today. 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 Luzon (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: 11:00 AM PhT Thu Oct 31, 2013
Class/Name: TY Krosa (Vinta)
Location of Eye: Near 17.8º N Lat 123.3º E Lon
Distance 1: 145 km ESE of Santa Ana, Cagayan
Distance 2: 180 km ESE of Aparri, Cagayan
Distance 3: 170 km ENE of Tuguegarao City
Distance 4: 255 km SE of Calayan Island
Distance 5: 395 km SE of Laoag City
MaxWinds (1-min avg): 150 kph near the center
Peak Wind Gusts: 185 kph
Saffir-Simpson Hurricane Scale: Category 1
Present Movement: W @ 20 kph
Towards: Northern Cagayan-Ilocos Norte Area
CPA [ETA] to Cagayan: Early Evening Today [between 5PM-7PM PhT]
Minimum Central Pressure: 963 millibars (hPa)

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

CURRENT TRACKING MAP: _____________________________________________________________________________




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

For the complete details on TY KROSA (VINTA)...go visit our website @:


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