Weather Advisory

Warning
"Heavy rain over Thailand"
No. 11 Time Issued : May 19, 2012

The low pressure cell over the Central of Thailand has moved to the Gulf of Martabun with the moderate southwest monsoon still prevails over the Andaman Sea. Thailand and the Gulf of Thailand affect scattered to fairly widespread rain over the country and isolated heavy rain in the North and the Central. People in the risky areas along foothills near waterways of Uttraradit, Phitsanulok, Phetchabun, Nakhon Sawan, Uthai Thani, Kanchanaburi, Ratchaburi and Phetchaburi should beware of flooding conditions during this period. Wind-wave above 2 meters is likely in thundershower areas of the Andaman Sea. All ships should proceed with caution during this period.

The advisory is in effect for Thailand from 19 May 2012

Issued at 05.00 a.m.

Weather Forecast Bureau, Meteorological Department
Ministry of Information and Communication Technology
Tel. 02-2398-9830 02-2398-9830, 02-2399-4012-4 or 1182
www.tmd.go.th or www.weather.go.th

From Joint Typhoon Warning Center

http://www.usno.navy.mil/JTWC

On 01 June 2011 JTWC will start classifying the formation potential of tropical disturbances in the Significant Tropical Weather Advisories as Low, Medium, and High. Click here for further details.

ABPW10 PGTW 191230 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND /SOUTH PACIFIC OCEANS REISSUED/191230Z-200600ZMAY2012// RMKS/ 1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA): A. TROPICAL CYCLONE SUMMARY: NONE. B. TROPICAL DISTURBANCE SUMMARY: (1) THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 7.9N 133.3E, APPROXIMATELY 80 NM WEST-NORTHWEST OF PALAU, HAS DISSIPATED AND IS NO LONGER SUSPECT FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE IN THE NEXT 24 HOURS. (2) THE AREA OF CONVECTION PREVIOUSLY LOCATED NEAR 7.5N 150.2E, IS NOW LOCATED NEAR 9.3N 151.2E, APPROXIMATELY 440 NM EAST- SOUTHEAST OF ANDERSEN AFB, GUAM ANIMATED MULTISPECTRAL SATELLITE IMAGERY SHOWS A SHARPLY TURNING CONVECTIVE CLOUD LINE WRAPPING INTO THE SUSPECTED LOW-LEVEL CIRCULATION CENTER (LLCC) FROM THE SOUTH AND EAST. A 190224Z OSCAT PARTIAL PASS INDICATES 10-15 KNOTS OVER THE EASTERN PORTION OF THE LLCC. A 190336Z AMSU IMAGE SHOWS DEEP CONVECTIVE ELEMENTS CONTAINED IN THE LARGE BAND TO THE SOUTH AND A RELATIVELY DRIER UPPER-LEVEL AIRMASS TO THE NORTHWEST OVER GUAM. UPPER-LEVEL ANALYSIS AND ANIMATED WATER VAPOR IMAGERY REVEAL A TROPICAL UPPER TROPOSPHERIC TROUGH (TUTT) CELL OVER GUAM PROVIDING SUBSIDENCE NEAR THE AREA. ADDITIONALLY, A TUTT CELL RESIDES NEAR THE DATELINE WHICH IS ENHANCING POLEWARD OUTFLOW. THE LLCC ITSELF IS UNDER AN EXTENSION OF THE NEAR EQUATORIAL RIDGE AXIS AND VERTICAL WIND SHEAR IS WEAK TO MODERATE AT 10-15 KNOTS. SEA SURFACE TEMPERATURES IN THE AREA ARE FAVORABLE FOR TROPICAL CYCLONE DEVELOPMENT AT 29-30 DEGREES CELSIUS. MAXIMUM SUSTAINED SURFACE WINDS ARE ESTIMATED AT 10 TO 15 KNOTS. MINIMUM SEA LEVEL PRESSURE IS ESTIMATED TO BE NEAR 1008 MB. THE POTENTIAL FOR THE DEVELOPMENT OF A SIGNIFICANT TROPICAL CYCLONE WITHIN THE NEXT 24 HOURS REMAINS MEDIUM. (3) NO OTHER SUSPECT AREAS. 2. SOUTH PACIFIC AREA (WEST COAST OF SOUTH AMERICA TO 135 EAST): A. TROPICAL CYCLONE SUMMARY: NONE. B. TROPICAL DISTURBANCE SUMMARY: NONE. 3. JUSTIFICATION FOR REISSUE: DISSIPATED AREA IN PARA 1.B.(1).// NNNN

ABIO10 PGTW 191800 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE INDIAN /OCEAN/191800Z-201800ZMAY2012// RMKS/ 1. NORTH INDIAN OCEAN AREA (MALAY PENINSULA WEST TO COAST OF AFRICA): A. TROPICAL CYCLONE SUMMARY: NONE. B. TROPICAL DISTURBANCE SUMMARY: NONE. 2. SOUTH INDIAN OCEAN AREA (135E WEST TO COAST OF AFRICA): A. TROPICAL CYCLONE SUMMARY: NONE. B. TROPICAL DISTURBANCE SUMMARY: NONE.// NNNN