Thursday, October 10, 2013

TS NARI (SANTI) Update #004


for Thursday, 10 October 2013 [8:12 AM PhT]


Issued at: 7:30 AM PhT (23:30 GMT) Thursday 10 October 2013

24W (SANTI) internationally named as NARI (a Korean word for Lily) - is now a Tropical Storm (TS) as it continues to rapidly intensify while over the Philippine Sea...threat to Central and Northern Luzon increases. Its outermost, southwestern rainbands are now spreading across Catanduanes and the Partido District of Camarines Sur.

Residents and visitors along Luzon including Bicol Region and Batanes Group of Islands should closely monitor the development of Nari (Santi).

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 5:00 am today, the center of TS Nari (Santi) was located over the Central Philippine Sea...about 430 km east-northeast of Pandan, Catanduanes or 655 km east-southeast of Casiguran, Aurora...currently moving northwest with an increased forward speed of 15 km/hr towards Central & Northern Luzon.

Maximum Sustained Winds (1-min. avg) have increased to 100 km/hr near the center with higher gusts. Tropical Storm Force Winds (63-117 km/hr) extend outward up to 95 kilometers from the center. Nari (Santi) is an average-sized tropical cyclone with a diameter of 665 kilometers across. The 24-hour rainfall accumulation near the center of Nari (Santi) is estimated to be extreme (300 mm).


TS Nari (Santi) is expected to move west-northwest during the next 24 hours...with a westerly turn by 48 hours. On the forecast track, the core of Nari (Santi) will continue to be over the Central Philippine Sea...passing well to the north of Bicol Region on Friday afternoon. By Saturday morning, Nari (Santi) will make landfall over Aurora somewhere along the towns of Casiguran and Baler between 6:00 to 8:00 am.

TS Nari (Santi) will continue to rapidly intensify during the next 24 to 48 hours...becoming a Category 1 Typhoon (TY) later today and increasing to Category 2 by early Saturday morning. Advance Intensity Forecast (AIF) shows its 1-minute maximum sustained winds reaching 165 km/hr before it makes landfall over Aurora Province.

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

FRIDAY MORNING: Becomes a TY [Category 1] as it moves west-northwest across the Central Philippine Sea...about 400 km east-southeast of Casiguran, Aurora [5AM OCT 11: 15.8N 125.8E @ 150kph].
SATURDAY MORNING: Strengthens to a Category 2 TY as it bears down the coast of Aurora...prepares to make landfall...about 45 km east of Casiguran, Aurora [5AM OCT 12: 16.1N 122.5E @ 165kph].
SUNDAY MORNING: Emerges over the West Philippine Sea, near the coast of Pangasinan...moving westerly...about 85 km west of Cape Bolinao, Pangasinan [5AM OCT 13: 16.2N 119.0E @ 130ph].

*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.

CENTRAL DENSE OVERCAST (CDO) - where Near-Typhoon Conditions w/ Near-Typhoon Force Winds (101-120 kph) will be expected along the CDO (click here to know more about CDO). Possible "Eye" may also be forming underneath the cirrus canopy. Affected Areas: Central Part of the Philippine Sea.
INNER RAINBANDS - where Tropical Storm Conditions with Tropical Storm Force Winds (63-100 kph) will be expected. Affected Areas: Central part of the Philippine Sea.
OUTER RAINBANDS - where Tropical Depression Conditions with light, moderate to strong winds (30-62 kph) will be expected. Affected Areas: Central part of the Philippine Sea and the eastern coastal areas of Northern Samar & Bicol Region. (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 300 mm (heavy to extreme) along areas to the west, south and near the center of Nari (Santi).

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 AM PhT Thu Oct 10, 2013
Class/Name: TS Nari (Santi)
Location of Center: Near 15.0º N Lat 128.1º E Lon
Distance 1: 430 km ENE of Pandan, Catanduanes
Distance 2: 450 km ENE of Virac, Catanduanes
Distance 3: 550 km ENE of Metro Naga
Distance 4: 570 km ENE of Daet, CamNorte
Distance 5: 655 km ESE of Casiguran, Aurora
Distance 6: 665 km ENE of Polillo Island
Distance 7: 700 km ESE of Baler, Aurora
Distance 8: 755 km ENE of Metro Manila
MaxWinds (1-min avg): 100 kph near the center
Peak Wind Gusts: 130 kph
Present Movement: NW @ 15 kph
Towards: Central & Northern Luzon
CPA [ETA] to Aurora: Saturday [between 6AM-8AM PhT]
24hr Rainfall Accum (Near the Center): Extreme [300 mm]
Minimum Central Pressure: 982 millibars (hPa)
Size (in Diameter): 665 km [Average]
Max Sea Wave Height (near center): 14 feet

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 TS NARI (SANTI)...go visit our website @:


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