[LeArc] Special Weather Statement : MLI@ 8/16/02 4:56:05 AM

[learc@mailman.qth.net]

The following weather message is provided by McDonough County E.S.D.A.


WWUS35 KMLI 161000
SPSMLI
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-009-
015>018-024>026-034-035-MOZ009-010-171000-

SIGNIFICANT WEATHER OUTLOOK
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
500 AM CDT FRI AUG 16 2002

...ACTIVE WEATHER THROUGH SATURDAY EVENING...

A COOL FRONT WILL STALL ALONG THE IOWA MISSOURI BORDER INTO CENTRAL
ILLINOIS THIS MORNING AS WEAK HIGH PRESSURE MOVES ACROSS MINNESOTA AND
WISCONSIN. SHOWERS AND THUNDERSTORMS ALONG THE FRONT ARE EXPECTED TO
DISSIPATE AROUND MID MORNING AS THE LOW LEVEL JET SHIFTS WEST INTO THE
PLAINS. LOCALLY HEAVY RAIN IS POSSIBLE EARLY THIS MORNING.

A STRONG STORM SYSTEM DEVELOPING IN THE NORTHERN PLAINS WILL
STRENGTHEN THE LOW LEVEL JET DURING THE DAY...ALLOWING THE STALLED
FRONT TO MOVE BACK NORTH THIS AFTERNOON AND EVENING. MOISTURE POOLING
ALONG THE FRONT COMBINED WITH DAYTIME HEATING MAY BE SUFFICIENT TO
ALLOW THUNDERSTORMS TO DEVELOP LATE THIS AFTERNOON AND EVENING. THESE
STORMS ARE NOT EXPECTED TO BE SEVERE. HOWEVER AN ISOLATED PULSE SEVERE
STORM CANNOT BE RULED OUT.

ON SATURDAY A STRONG COLD FRONT IS FORECAST TO MOVE THROUGH THE REGION.
A SQUALL LINE IS EXPECTED TO DEVELOP ALONG OR JUST AHEAD OF THE FRONT
AND BEGIN MOVING INTO EASTERN IOWA SHORTLY BEFORE SUNRISE. THE SQUALL
LINE IS EXPECTED TO WEAKEN FRIDAY NIGHT...BUT SEVERE STORMS ARE STILL
POSSIBLE. AT THIS TIME THE MAIN THREAT WOULD BE DAMAGING WINDS AND HAIL.
THE SQUALL LINE SHOULD BE MOVING FAST ENOUGH TO PREVENT ANY FLOODING...
BUT LOCALLY HEAVY RAIN IS POSSIBLE.

THE MOST LIKELY TIME FOR ANY SEVERE STORMS WOULD BE AFTER 4 AM
SATURDAY AND THROUGHOUT THE DAY ON SATURDAY. THE SQUALL LINE IS EXPECTED
TO INTENSIFY SATURDAY AFTERNOON...SO THE THREAT OF SEVERE WEATHER IS
EXPECTED TO INCREASE SATURDAY ALONG AND EAST OF THE MISSISSIPPI.

QUIET WEATHER IS THEN EXPECTED SATURDAY NIGHT THROUGH SUNDAY. NEW
INFORMATION SUGGESTS THE POSSIBILITY OF MORE THUNDERSTORMS LATE SUNDAY
NIGHT INTO MONDAY.

SPOTTER ACTIVATION MAY BE NEEDED BEGINNING VERY LATE TONIGHT AND DURING
THE DAY SATURDAY.

$$


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