000
ATPQ40 PGUM 231505
SIMGUM

SATELLITE INTERPRETATION MESSAGE
NATIONAL WEATHER SERVICE TIYAN GU
1 AM CHST WED SEP 24 2008

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

AN UPPER-LEVEL LOW IS CURRENTLY CENTERED JUST NORTH OF THE MARIANA
ISLANDS AT 21N145E. UPPER-LEVEL DIVERGENCE SOUTH OF THE LOW IS
COMBINING WITH CONVERGENT TRADE WINDS TO TRIGGER NUMEROUS SHOWERS
AND ISOLATED THUNDERSTORMS OVER THE MARIANAS BETWEEN 10N AND 17N
FROM 143E TO 148E.

A MONSOON TROUGH EXTENDS EAST-SOUTHEASTWARD ACROSS A LARGE PORTION
OF THE DISCUSSION AREA FROM LUZON TO 16N130E THROUGH A DEVELOPING
CIRCULATION CENTERED NORTHEAST OF YAP AT 12N140E...THEN THROUGH A
WEAK CIRCULATION CENTERED SOUTH OF POHNPEI AT 4N158E TO END AT
7N163E. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS ASSOCIATED WITH
THE WESTERN PORTION OF THE TROUGH ARE FOUND OVER KOROR WEST OF A
LINE FROM 16N134E TO 5N135E. NUMEROUS SHOWERS AND ISOLATED
THUNDERSTORMS ASSOCIATED WITH THE CIRCULATION NORTHEAST OF YAP ARE
OCCURRING BETWEEN 8N AND 14N FROM 137E TO 143E. SCATTERED SHOWERS
AND A FEW THUNDERSTORMS ASSOCIATED WITH THE EASTERN PORTION OF THE
TROUGH AND CIRCULATION SOUTH OF POHNPEI ARE LOCATED OVER POHNPEI AND
KOSRAE BETWEEN 3N AND 8N FROM 155E TO 166E.

TRADE-WIND CONVERGENCE IS GENERATING SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS ACROSS THE REPUBLIC OF THE MARSHALL ISLANDS AND
KIRIBATI BETWEEN THE EQUATOR AND 11N FROM 166E TO 180.

$$

SIMPSON

000
ATPQ40 PGUM 230236
SIMGUM

SATELLITE INTERPRETATION MESSAGE
NATIONAL WEATHER SERVICE TIYAN GU
1 PM CHST TUE SEP 23 2008

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

A MONSOON TROUGH EXTENDS EAST-SOUTHEAST ACROSS A LARGE PORTION OF
THE DISCUSSION AREA FROM LUZON THROUGH 17N130E TO A DEVELOPING
CIRCULATION NEAR YAP AT 10N140E TO A WEAK CIRCULATION NEAR KOSRAE.

CONVERGENT LOW LEVEL WINDS INTO THE CIRCULATION NEAR YAP COMBINED
WITH DIVERGENT FLOW ALOFT IS GENERATING WIDESPREAD SHOWERS AND A FEW
THUNDERSTORMS FROM 8N TO 12N BETWEEN 136E AND 144E. NUMEROUS SHOWERS
AND ISOLATED THUNDERSTORMS ASSOCIATED WITH THE CIRCULATION BY KOSRAE
ARE FOUND WITHIN 80 MILES OF 5N163E.

LOW LEVEL CONVERGENCE ASSOCIATED WITH THE MONSOON TROUGH COMBINED
WITH BROAD UPPER LEVEL DIFFLUENCE IS PRODUCING WIDESPREAD CLOUDINESS
AND SPOTTY AREAS OF CONVECTION IN POHNPEI STATE SOUTH OF 7N BETWEEN
153E AND 165E.

TRADE WIND CONVERGENCE IS GENERATING SCATTERED SHOWERS IN THE
MARSHALL ISLANDS WITHIN 100 MILES EITHER SIDE OF A LINE FROM 6N166E
TO 7N178E. THIS AREA INCLUDES MAJURO.

DIVERGENT UPPER LEVEL WINDS ASSOCIATED WITH A TUTT CELL NORTH OF
SAIPAN NEAR 19N145E IS ENHANCING SHOWER ACTIVITY IN THE SOUTHERN
MARIANAS WITHIN 100 MILES OF 13N145E. DIVERGENT FLOW SOUTH OF AN
UPPER LOW NEAR 23N130E IS ALSO PRODUCING SCATTERED SHOWERS WEST OF
132E BETWEEN 12N AND 19N.

$$

000
ATPQ40 PGUM 230235
SIMGUM

SATELLITE INTERPRETATION MESSAGE
NATIONAL WEATHER SERVICE TIYAN GU
1 PM CHST TUE SEP 23 2008

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

A MONSOON TROUGH EXTENDS EAST-SOUTHEAST ACROSS A LARGE PORTION OF
THE DISCUSSION AREA FROM LUZON THROUGH 17N130E TO A DEVELOPING
CIRCULATION NEAR YAP AT 10N140E TO A WEAK CIRCULATION NEAR KOSRAE.

CONVERGENT LOW LEVEL WINDS INTO THE CIRCULATION NEAR YAP COMBINED
WITH DIVERGENT FLOW ALOFT IS GENERATING WIDESPREAD SHOWERS AND A FEW
THUNDERSTORMS FROM 8N TO 12N BETWEEN 136E AND 144E. NUMEROUS SHOWERS
AND ISOLATED THUNDERSTORMS ASSOCIATED WITH THE CIRCULATION BY KOSRAE
ARE FOUND WITHIN 80 MILES OF 5N163E.

LOW LEVEL CONVERGENCE ASSOCIATED WITH THE MONSOON TROUGH COMBINED
WITH BROAD UPPER LEVEL DIFFLUENCE IS PRODUCING WIDESPREAD CLOUDINESS
AND SPOTTY AREAS OF CONVECTION IN POHNPEI STATE SOUTH OF 7N BETWEEN
153E AND 165E.

TRADE WIND CONVERGENCE IS GENERATING SCATTERED SHOWERS IN THE
MARSHALL ISLANDS WITHIN 100 MILES EITHER SIDE OF A LINE FROM 6N166E
TO 7N178E. THIS AREA INCLUDES MAJURO.

DIVERGENT UPPER LEVEL WINDS ASSOCIATED WITH A TUTT CELL NORTH OF
SAIPAN NEAR 19N145E IS ENHANCING SHOWER ACTIVITY IN THE SOUTHERN
MARIANAS WITHIN 100 MILES OF 13N145E. DIVERGENT FLOW SOUTH OF AN
UPPER LOW NEAR 23N130E IS ALSO PRODUCING SCATTERED SHOWERS WEST OF
132E BETWEEN 12N AND 19N.

$$