[LeArc] HWODVN@ 5/30/2003 11:29:15 AM

[learc@mailman.qth.net]

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


FLUS43 KDVN 301627
HWODVN
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-311000-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1120 AM CDT FRI MAY 30 2003

...STRONG THUNDERSTORMS MAY BE POSSIBLE THIS AFTERNOON AND EVENING...
BRISK GRADIENT WINDS THIS EVENING BEHIND COLD FRONT...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN IOWA...
NORTHWEST AND WEST CENTRAL ILLINOIS...AND NORTHEAST MISSOURI.

.DAY ONE...THIS AFTERNOON AND TONIGHT

AS SHOWERS AND A FEW THUNDERSTORMS EXIT THE AREA LATE THIS
MORNING...MORE MAY FORM THIS AFTERNOON OVER PORTIONS OF THE AREA. A
COLD FRONT CURRENTLY OVER WESTERN IOWA...WILL SURGE EAST AND REACH
THE MISSISSIPPI RIVER AROUND 4 PM. AS THE CLOUD COVER FROM THIS
MORNINGS SHOWERS ERODES...AN INCREASING SOUTH WIND WILL ADVECT
SURFACE DEWPOINTS INTO THE LOWER TO MID 60S OVER MUCH OF THE AREA.
COMBINED WITH THE SUNSHINE...THESE DEWPOINTS WILL ALLOW THE AIRMASS
TO DESTABILIZE ENOUGH TO SUPPORT STRONG THUNDERSTORM DEVELOPMENT AS
THE COLD FRONT APPROACHES. IT APPEARS THAT AREAS ALONG AND EAST OF
THE MISSISSIPPI RIVER WILL BE MOST FAVORABLE FOR THUNDERSTORM
DEVELOPMENT BY MID AFTERNOON. VERTICAL WIND PROFILES SUGGEST THAT IF
THUNDERSTORMS CAN DEVELOP IN THE NARROW WARM SECTOR AHEAD OF THE
FRONT...THE MAIN THREAT OF SEVERE WEATHER WILL BE IN THE FORM OF
STRAIGHT LINE WINDS IN EXCESS OF 60 MPH. HAIL UP TO 1 INCH MAY ALSO
BE POSSIBLE. THE MOST UNSTABLE AIR AND SHEARING WIND PROFILE WILL
OCCUR ALONG AND SOUTHEAST OF A PRINCETON ILLINOIS...TO JUST NORTH OF
MONMOUTH...AND TO A KAHOKA MISSOURI LINE. AREAS SOUTH OF THIS LINE
MAY BE SUSCEPTIBLE TO ISOLATED TO SCATTERED SUPERCELL DEVELOPMENT...
WHERE HAIL...HIGH WINDS...AND EVEN A TORNADO MAY BE POSSIBLE. THE
SEVERE THREAT SHOULD BE OVER BY 730 PM AS THE COLD FRONT PUSHES EAST
OF THE AREA.

BEHIND THE COLD FRONT AND SOUTH OF A DEEP SURFACE LOW PUSHING
ACROSS WISCONSIN...STRONG GRADIENT WINDS WILL BUILD INTO THE AREA.
THIS WIND WILL DEVELOP BY LATE AFTERNOON IN THE WEST...AND CONTINUE
TO THE EAST OVER THE REST OF THE AREA THROUGH THIS EVENING AND INTO
THE OVERNIGHT. A NORTHWEST WIND SUSTAINED AT 20 TO 35 MPH...WITH
GUSTS UP TO 43 MPH...IS LIKELY BY LATE THIS AFTERNOON AND EARLY THIS
EVENING...ESPECIALLY ALONG AND NORTH OF THE INTERSTATE 80 CORRIDOR.
STAY TUNED FOR A POSSIBLE WIND ADVISORY.


.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY...

THERE WILL BE A CHANCE OF THUNDERSTORMS LATE SUNDAY THROUGH THURSDAY.
THE THREAT OF SEVERE WEATHER FOR THESE THUNDERSTORMS IS UNCLEAR AT
THIS TIME...AND WILL BE BETTER DEFINED IN FUTURE OUTLOOKS.


.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED FROM MID AFTERNOON THROUGH EARLY
THIS EVENING...MAINLY ALONG AND EAST OF THE MISSISSIPPI RIVER.

&&

MORE INFORMATION MAY BE OBTAINED AT THE FOLLOWING URL:
http://www.crh.noaa.gov/dvn

$$

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