Satellite Interpretation Message
Issued by NWS Tiyan, Guam

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207
ATPQ40 PGUM 161640
SIMGUM

SATELLITE INTERPRETATION MESSAGE
NATIONAL WEATHER SERVICE TIYAN GU
240 AM CHST TUE OCT 17 2017

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

TROPICAL STORM LAN (25W) IS CENTERED 255 MILES NORTH-NORTHWEST OF
KOROR AT 11N133E MOVING WEST AT 14 MPH WITH MAXIMUM SUSTAINED
WINDS OF 40 MPH. HEAVY SHOWERS AND ISOLATED THUNDERSTORMS ARE NEAR
AND EAST OF THE CENTER BETWEEN 9N AND 12N FROM 132E TO 137E.
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS ARE FOUND FARTHER
FROM THE CENTER IN A BROAD AREA BETWEEN 2N AND 14N FROM 130E TO
140E. THIS INCLUDES KOROR AND YAP. FOR MORE INFORMATION ON
TROPICAL STORM LAN...SEE BULLETINS ISSUED BY THE JOINT TYPHOON
WARNING CENTER UNDER WMO HEADER WTPN32 PGTW AND BY THE NATIONAL
WEATHER SERVICE UNDER WMO HEADER WTPQ32 PGUM.

A WEAK DISTURBANCE IS CENTERED NEAR GUAM AT 13N144E. SCATTERED
SHOWERS AND ISOLATED THUNDERSTORMS ARE FOUND EAST OF THE
CIRCULATION AND JUST EAST OF THE MARIANAS BETWEEN 11N AND 16N FROM
146E TO 151E.

AN UPPER-LEVEL TROUGH EXTENDS EAST-NORTHEASTWARD THROUGH 16N130E
TO AN UPPER LOW CENTERED NORTHWEST OF WAKE ISLAND AT 23N161E.
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS ARE FOUND NORTH OF
SAIPAN AND ACROSS PARTS OF THE NORTHERN CNMI WITHIN 100 MILES OF A
LINE FROM 17N130E TO 18N152E...AND NEAR WAKE ISLAND NORTH OF A
LINE FROM 17N156E TO 17N165E TO 25N169E.

A SURFACE TROUGH IS GENERATING SCATTERED SHOWERS AND A FEW
THUNDERSTORMS NEAR KOSRAE BETWEEN 3N AND 9N FROM 161E TO 167E.

LOW-LEVEL CONVERGENCE IS PRODUCING SCATTERED SHOWERS AND A FEW
THUNDERSTORMS ACROSS THE MARSHALL ISLANDS WITHIN 125 MILES OF A
LINE FROM 3N172E TO 9N172E TO 10N180.

TRADE-WIND CONVERGENCE IS TRIGGERING SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS NORTH OF THE MARSHALL ISLANDS TO EAST OF
WAKE ISLAND WITHIN 180 MILES OF A LINE FROM 23N170E TO 11N175E.

$$

AYDLETT



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