Satellite Interpretation Message
Issued by NWS Tiyan, Guam

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ATPQ40 PGUM 151510
SIMGUM

SATELLITE INTERPRETATION MESSAGE
NATIONAL WEATHER SERVICE TIYAN GU
110 AM CHST SAT DEC 16 2017

WESTERN NORTH PACIFIC BETWEEN THE EQUATOR AND 25N FROM 130E TO 180.

A MONSOON TROUGH EXTENDS SOUTHEASTWARD FROM TROPICAL STORM KAI-TAK
CENTERED EAST OF THE CENTRAL PHILIPPINES AT 12N127E ACROSS 11N130E...
PASSING NEAR YAP THEN THROUGH A TROPICAL DISTURBANCE CENTERED
SOUTHWEST OF CHUUK AT 3N149E TO END SOUTH OF POHNPEI AT EQ157E.
NUMEROUS HEAVY SHOWERS AND ISOLATED THUNDERSTORMS ARE SEEN SOUTHWEST
OF CHUUK BETWEEN THE EQUATOR AND 7N FROM 141E TO 151E. SCATTERED
SHOWERS AND THUNDERSTORMS ARE OCCURRING SOUTH OF KOROR BETWEEN 2N AND
6N FROM 130E TO 136E. FOR INFORMATION ON TROPICAL STORM KAI-TAK...SEE
BULLETINS ISSUED BY THE JOINT TYPHOON WARNING CENTER UNDER WMO HEADER
WTPN31 PGTW.

A SURFACE TROUGH RUNS NORTHWARD FROM THE TROPICAL DISTURBANCE
SOUTHWEST OF CHUUK TO END EAST OF GUAM AT 14N148E. SCATTERED SHOWERS
AND A FEW THUNDERSTORMS ARE FOUND SOUTHEAST OF GUAM WITHIN 130 MILES
OF A LINE FROM 7N149E TO 12N147E.

CONVERGING TRADE WINDS ARE GENERATING PATCHY SHOWERS AND A FEW
THUNDERSTORMS NEAR KOSRAE AND BUTARITARI ATOLL BUT JUST SOUTH OF
MAJURO WITHIN 135 MILES OF A LINE FROM 8N160E TO 2N180.

A SHEAR LINE EXTENDS SOUTHWESTWARD FROM NEAR MINAMI TORI SHIMA AT
25N155E TO OVER THE PHILIPPINE SEA AT 18N135E...THEN CONTINUES AS A
SURFACE TROUGH TO BEYOND 130E AT 15N. EXTENSIVE CLOUDINESS AND PATCHY
RAIN ARE ALONG AND UP TO 250 MILES NORTHWEST OF THE SHEAR LINE.
SCATTERED SHOWERS AND A FEW THUNDERSTORMS ARE PRESENT NEAR THE TROUGH
WITHIN 60 MILES OF A LINE FROM 17N130E TO 17N134E.

$$

CHAN



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