Sunday, June 17, 2012

Super Typhoon GUCHOL [BUTCHOY] - Update #018


for Sunday, 17 June 2012 [7:36 AM PhT]

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Typhoon2000 (T2K) NEWS (Friday June 15 2012):

Currently issuing 6-hrly web, email, SMS (except SMART/TNT - due to technical adjustments) & iTyphoon app updates (except 12:00 Midnight) on GUCHOL (BUTCHOY).


+ USA (JTWC/1-min avg): 240 km/hr
+ Japan (JMA/10-min avg): 185 km/hr
+ Philippines (PAGASA/10-min avg): 160 km/hr
+ Beijing (NMC/2-min avg): 215 km/hr
+ Taiwan (CWB/10-min avg): 185 km/hr
+ Korea (KMA/10-min avg): 165 km/hr

+ Hong Kong (HKO/10-min avg): 185 km/hr
:: Click here to see Multi-Agency Forecast Tracks


6:00 AM PhT (22:00 GMT) Sun 17 June 2012
Source: T2K Analysis/JTWC TC Warning #024/SatFixes
View: Advisory Archives (2004-2012)
GUCHOL (BUTCHOY) becomes the first Super Typhoon of 2012...still tracking NNW across the North Philippine Sea. This howler will not directly affect any part of the Philippines.

GUCHOL (BUTCHOY) will enhance the Southwest Monsoon (aka. Habagat) across Visayas & Luzon particularly the western sections today until Tuesday. Breezy to windy conditions & cloudy skies w/ occasional to widespread rains, thunderstorms & squalls will be expected. The seas along the coastal areas along the West Philippine and Visayan Sea will become moderate to rough & dangerous.

Residents and visitors along the East Coast of the Philippines and the Southern Islands of Japan, particularly Okinawa and Ryukyu should closely monitor the progress of GUCHOL (BUTCHOY).

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.


Time/Date: 6:00 AM PhT Sun June 17 2012
Location of Eye: 17.0º N Lat 127.8º E Lon
Distance 1: 540 km NE of Virac, Catanduanes
Distance 2: 557 km NE of Caramoan, CamSur
Distance 3: 614 km ENE of Casiguran, Aurora
Distance 4: 621 km NE of Metro Naga/CWC
Distance 5: 563 km East of Palanan Bay, Isabela
Distance 6: 638 km East of Ilagan City
Distance 7: 649 km East of Cauayan City
Distance 8: 651 km ESE of Tuguegarao City
Distance 9: 675 km ESE of Aparri, Cagayan
Distance 10: 724 km SE of Basco, Batanes
Distance 11: 765 km ENE of Metro Manila
MaxWinds (1-min avg): 240 kph (130 kts) near the center
Peak Wind Gusts: 295 kph (160 kts)
Present Movement: NNW @ 24 kph (13 kts)
Towards: North Philippine Sea
NOAA 24hr Rainfall Accum (near center): 250 mm (High)
Minimum Central Pressure: 926 millibars (hPa)
Saffir-Simpson Typhoon Scale: Category 4
Size (in Diameter): 740 km (400 nm) [Large]
Wind Area Distribution (in Knots): Current Wind Profile
Max Sea Wave Height (near center): 45 ft
Possible Storm Surge Height: 13-18 ft [4-5.5 m]
Wunder TrackMap (for Public): 2 AM PhT Sun June 17


GUCHOL (BUTCHOY) is expected to continue moving north-northwestward with a faster speed for the next 12 to 24 hours and will recurve sharply NNE-ward between 36 to 48 hours. On the forecast track, the core of GUCHOL will just move across the open waters of the North Philippine Sea, passing more or less 600 km to the east of the Philippines through Monday - without hitting any land areas. It will be moving out of the Philippine Area of Responsibility (PAR) Monday afternoon and will be passing close to Okinawa Monday evening. On Wednesday early morning, GUCHOL will be just along the Southern Coast of Honshu, approaching Metropolitan Tokyo.

Maximum Sustained Winds (1-min. avg) are near 240 km/hr (130 knots) with higher gusts. Some fluctuations on its strength will be expected until it starts to weaken beginning Tuesday. GUCHOL will start to transition into an Extratropical Cyclone on Wednesday.

Typhoon Force Winds (118 km/hr or more) extend outward up to 85 kilometers (45 nautical miles) from the center...and Tropical Storm Force Winds (62-117 km/hr) extend outward up to 215 kilometers (115 nautical miles. GUCHOL is now a large-sized tropical cyclone with a diameter of 740 kilometers (400 nautical miles).

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

MONDAY EARLY MORNING: Maintains its Super Typhoon strength...turns Northward as it moves away from the Philippine Sea...about 558 km ENE of Basco, Batanes [2AM JUN 18: 21.3N 127.3E @ 240kph].
TUESDAY EARLY MORNING: No longer a Super Typhoon, but remains a dangerous Category 4 Typhoon...already outside P.A.R. as it moves away from Okinawa and Ryukyu Islands...about 102 km SE of Naje Island, Japan [2AM JUN 19: 27.8N 130.3E @ 215kph].
WEDNESDAY EARLY MORNING: Weakens to Category 1...accelerates NE-ward while just along the Southern Coast of Honshu, Japan...becoming Extratropical...about 311 km SW of Tokyo, Japan [2AM JUN 20: 33.8N 137.2E @ 150kph].

*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:

20-KM SYMMETRICAL EYE - over water (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 - over water (Philippine Sea). Typhoon Conditions with Typhoon Force Winds (>118 kph) will be expected within this wall (click here to know more about the Eyewall).
INNER RAINBANDS - over water (Philippine Sea)...not affecting any land areas. Tropical Storm Conditions with Tropical Storm Force Winds (62-100 kph) will be expected along these bands.
OUTER RAINBANDS - over water (Philippine Sea)...not affecting any land areas Cloudy/Rainy Conditions w/ 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 (low to high rainfall) can be expected along areas affected by the outer & inner rainbands (see above)...with isolated amounts of 201 to 250 mm (high) along areas near the center of GUCHOL (BUTCHOY). (click to open NOAA's eTRaP graphic).

Important Note: Please keep in mind that the above forecast outlook, effects-hazards, current monsoon intensity, & tropical cyclone watch changes every 6 to 12 hrs!

External Links for STY GUCHOL (BUTCHOY)

PAGASA@Twitter: Hourly Updates
View NOAA-CIRA's: Latest Full Wind Analysis
JTWC Latest Tracking Chart: wp0512.gif
Multi-Agency Forecast TrackMap: Near Real-Time
TSR Wind Probabilities: Current to 5 Days Ahead
JAXA TRMM Page: Latest Rainrate (in mm/hr)
NASA TRMM Page: GUCHOL's Rainrate Archives (in mm/hr)
Zoomed Satellite Pic: NOAA's Near Real-Time
Wunderground Animation: 6-12 hr. GIF Loop






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

For the complete details on STY GUCHOL (BUTCHOY)...go visit our website @:


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