[LeArc] Special Weather Statement : MLI@ 5/5/02 3:54:02 PM

[learc@mailman.qth.net]

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


WWUS35 KMLI 052054
SPSMLI
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-009-
015>018-024>026-034-035-MOZ009-010-061000-

SIGNIFICANT WEATHER OUTLOOK
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
351 PM CDT SUN MAY 5 2002

...WIDESPREAD THUNDERSTORMS LATER TONIGHT...

A WARM FRONT REACHING FROM NORTH CENTRAL IOWA...THROUGH EAST CENTRAL
IOWA...INTO NORTH CENTRAL ILLINOIS AT MIDDAY WILL CONTINUE TO LIFT
SLOWLY NORTH THROUGH THE REST OF THIS AFTERNOON. THIS WILL BE THE
PRIMARY FOCUS FOR ISOLATED THUNDERSTORMS THIS AFTERNOON AND EARLY
EVENING. MORE WIDESPREAD THUNDERSTORMS WILL BREAK OUT LATER TONIGHT AS
AN UPPER LEVEL DISTURBANCE MOVES ACROSS THE REGION. THESE LATER STORMS
WILL HAVE THE POTENTIAL TO PRODUCE HEAVY RAINFALL AND POSSIBLY LARGE
HAIL.

THUNDERSTORMS LATE THIS AFTERNOON WILL BE MAINLY NORTH OF HIGHWAY 20 IN
EASTERN IOWA AND NORTH OF INTERSTATE 80 IN NORTHWEST ILLINOIS...WITH
MOVEMENT TO THE NORTHEAST AROUND 45 MPH. THESE WILL NOT LIKELY BECOME
SEVERE...BUT COULD PRODUCE SMALL HAIL AND BRIEF HEAVY RAINFALL.

A MORE SIGNIFICANT ROUND OF THUNDERSTORMS WILL DEVELOP THIS EVENING AS A
STRONG LOW LEVEL JET WITH GULF MOISTURE INTERACTS WITH A WEAK SURFACE
BOUNDARY IN EASTERN NEBRASKA. A CLUSTER OR BROKEN LINE OF STORMS IS THEN
EXPECTED TO MOVE EAST TO SOUTHEAST ACROSS WESTERN AND CENTRAL IOWA...
REACHING EAST CENTRAL AND SOUTHEAST IOWA TOWARD MIDNIGHT. HEAVY RAIN
WILL BE THE MAIN THREAT AS THE STORMS AFFECT AREAS MAINLY SOUTH OF
INTERSTATE 80. A FEW EMBEDDED STORMS MAY HAVE THE CAPABILITY TO PRODUCE
HAIL UP TO 1 INCH IN DIAMETER AND WIND GUSTS TO 40 MPH...ESPECIALLY
BETWEEN MIDNIGHT AND 3 AM. THE STORMS WILL CONTINUE EAST INTO NORTHWEST
ILLINOIS...MAINLY SOUTH OF INTERSTATE 80...WELL AFTER MIDNIGHT.

WIDESPREAD RAINFALL OF 1/2 TO 1 INCH IS EXPECTED TONIGHT WITH LOCALIZED
AMOUNTS UP TO 1.5 INCHES.

SEVERE WEATHER IS MORE LIKELY MONDAY NIGHT AS ANOTHER UPPER LEVEL
DISTURBANCE INTERACTS WITH A MOIST UNSTABLE AIRMASS...AND WEAK
BOUNDARIES THAT WILL THEN BE IN PLACE ACROSS EASTERN IOWA AND
NORTHWEST ILLINOIS. LARGE HAIL AND DAMAGING WIND WILL BE MORE LIKELY
WITH STORMS MONDAY NIGHT...ALONG WITH THE CONTINUED RISK FOR HEAVY
RAINFALL.

THE UNSETTLED WEATHER PATTERN WILL CONTINUE THROUGH WEDNESDAY. THIS
EXTENDED PERIOD OF RAIN WILL GRADUALLY SATURATE SOILS ACROSS THE
REGION...AND MAY LEAD TO LOCALIZED FLOODING AND GRADUAL SIGNIFICANT
RISES ON AREA RIVERS.

STORM SPOTTER ACTIVATION IS NOT ANTICIPATED FOR LATER TONIGHT...BUT IS
EXPECTED FOR LATE MONDAY INTO MONDAY NIGHT. STAY TUNED TO NOAA WEATHER
RADIO...OR YOUR FAVORITE RADIO OR TELEVISION STATION FOR LATER FORECASTS
AND UPDATES ON THIS DEVELOPING SITUATION.

$$
DLS

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