[LeArc] Forecast Discussion : MLI@ 6/18/2003 2:54:57 PM

[learc@mailman.qth.net]

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


FXUS63 KDVN 181951
AFDMLI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
250 PM CDT WED JUN 18 2003

POST-FRONTAL PULSE/MARGINALLY SEVERE MULTICELL CONVECTION IN MOIST 
AIRMASS THIS AFTERNOON.  CONVECTION WILL DIMINISH RAPIDLY WITH LOSS 
OF DIURNAL HEATING...SO EXPECT END TO ACTIVITY BY 9 PM.  

SURFACE RIDGE WITH DEW POINTS AROUND 50 WILL BUILD IN TOMORROW...SO 
A VERY NICE DAY ON TAP.  WE WILL HAVE TO WATCH FOR RECORD COOL TEMPS 
THURSDAY NIGHT AS THE RIDGE AXIS SPANS THE CWFA.  

FRIDAY...HIGH SLIDES ACROSS NORTHERN ILLINOIS ALLOWING MOISTURE 
RETURN ON THE WEST SIDE OF THE RIDGE BY SATURDAY.  WEAK DISTURBANCE 
PROGGED TO CROSS THE AREA SATURDAY AFTERNOON...BUT LACK OF LOW LEVEL 
CONVERGENCE MAKES POPS NEGLIGIBLE AT THIS POINT.  

SUNDAY THROUGH WEDNESDAY... MIDWEST SETTLES INTO ACTIVE CONVECTIVE 
PATTERN.  UPPER TROUGH DOMINATES THE WESTERN US...RESULTING IN SWLY 
UPPER FLOW SPANNING THE MISSISSIPPI VALLEY AND A DEEPENING SURFACE 
TROUGH OVER THE PLAINS.  CHANCE OF THUNDER EACH DAY UNTIL SURFACE 
LOW FINALLY LIFTS OUT...WHICH IS CURRENTLY PROGGED FOR LATE 
WEDNESDAY. TEMPS TO BE WARM AND HUMID UNDER THE INFLUENCE OF LOW 
LEVEL RETURN FLOW THROUGH TUESDAY WITH POTENTIAL FOR SOME RELIEF 
WEDNESDAY BEHIND THE FRONT.

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

33
$$