[LeArc] Forecast Discussion : MLI@ 5/24/2003 3:06:44 AM

[learc@mailman.qth.net]

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


FXUS63 KDVN 240803
AFDMLI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
300 AM CDT SAT MAY 24 2003

NORTHWEST FLOW CONTINUES OVER REGION WITH CLOSED UPPER LOW OVER 
LOWER MICHIGAN AND STRONG SHORTWAVE UPSTREAM IN NORTH DAKOTA THIS 
MORNING.  PATCHES OF FOG DEVELOPING DUE TO LIGHT WINDS...BREAKS IN 
CLOUD COVER...AND HIGH LOW LEVEL RH.  OVERCAST DECK WORKING ITS WAY 
INTO THE MISSISSIPPI VALLEY WILL PUT THE BRAKES ON FOG DEVELOPMENT 
BY SUNRISE.  

DAKOTA SHORTWAVE WILL DROP ACROSS IOWA TODAY AND ROUND THE UPPER LOW 
EARLY SUNDAY INTO MONDAY.  AS A RESULT...EXPECT THE UPPER LOW TO 
RETROGRADE SLIGHTLY...KEEPING OUR CWFA IN CYCLONIC FLOW AND THE 
PATTERN RELATIVELY STAGNANT FOR THE NEXT SEVERAL DAYS.  PRECIP 
ASSOCIATED WITH THE SHORT WAVE TODAY SHOULD BE LIMITED TO WESTERN 
THIRD OF THE CWFA DUE TO VORT ADVECTION STAYING TO THE WEST AND DRY 
SURFACE RIDGE IN PLACE OVER THE UPPER MISSISSIPPI VALLEY.  

WITH THE UPPER LOW HOLDING OVER THE GREAT LAKES THROUGH 
TUESDAY...LOOK FOR CONTINUED COOL WEATHER WITH MINOR PRECIP CHANCES 
AS VARIOUS SPOKES ROTATE AROUND THE LOW.  AT THIS POINT...ANY 
MEASURABLE PRECIP CHANCE FOR SUNDAY OR MONDAY IS STILL WELL BELOW 20 
PERCENT (POTENTIAL FOR ISOLATED POPCORN CONVECTION IN THE 
AFTERNOON).  SO WILL KEEP FORECAST DRY FOR NOW SINCE COVERAGE LIKELY 
TO BE SPARSE AT BEST.

KEEPING THE WARMING TREND FOR THE END OF NEXT WEEK AND NO CHANGES TO 
POPS NEEDED AT THIS TIME.  

.DVN...
IA...NONE.
IL...NONE.
MO...NONE.

$$

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