Satellite Interpretation Message
Issued by NWS Tiyan, Guam

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431
ATPQ40 PGUM 180242
SIMGUM

SATELLITE INTERPRETATION MESSAGE
NATIONAL WEATHER SERVICE TIYAN GU
1242 PM CHST WED OCT 18 2017

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

TYPHOON LAN (25W) IS CENTERED 390 MILES NORTH-NORTHWEST OF KOROR
AT 13N132E MOVING NORTH AT 12 MPH WITH MAXIMUM SUSTAINED WINDS OF
75 MPH. SHOWERS AND ISOLATED THUNDERSTORMS ARE IN LARGE AREAS
NORTHWEST OF KOROR OVER THE PHILIPPINE SEA WEST OF A LINE FROM
17N138E TO 10N140E TO 7N130E. FOR MORE INFORMATION ON TYPHOON
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 MONSOON TROUGH RUNS EASTWARD FROM TYPHOON LAN AT 13N132E THROUGH
A CIRCULATION NEAR SAIPAN AT 15N145E THROUGH ANOTHER CIRCULATION
AT 17N150E CURVING NORTHEASTWARD TO ANOTHER CIRCULATION NORTHWEST
OF WAKE ISLAND NEAR 22N160E. AREAS OF RAIN WITH SCATTERED HEAVY
SHOWERS AND ISOLATED THUNDERSTORMS ARE FROM NEAR YAP ACROSS THE
MARIANA ISLANDS AND EASTWARD WITHIN 200 MILES OF A LINE FROM
7N139E TO 14N147E TO 14N155E. FARTHER NORTHEAST AROUND WAKE ISLAND
ARE SEEN SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS WITHIN 150
MILES OF A LINE FROM 24N155E TO 23N164E TO 20N169E TO 14N168E.

CONVERGING LOW-LEVEL WINDS ARE TRIGGERING PATCHY AREAS OF SHOWERS
AND A FEW THUNDERSTORMS FROM NEAR CHUUK ACROSS POHNPEI AND KOSRAE
STATES AND THE MARSHALL ISLANDS TO THE DATE LINE WITHIN 150 MILES
OF A LINE FROM 8N152E TO 7N163E AND WITHIN 200 MILES OF A LINE
FROM 7N163E TO 11N180.

$$

SIMPSON



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