Severe Thunderstorm Warning 176, NWS Quad Cities, IA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1054 AM CST MON NOV 22 2010

.UPDATE...
MAJOR REVISIONS HAVE BEEN DONE TO THE FCST TO REFLECT CURRENT
TRENDS. COMBINATION OF 12Z UA AND 15Z DATA INDICATES THE BETTER
CHANCES FOR CONVECTION SHOULD BE ROUGHLY IN THE SOUTHERN HALF OF
THE CWFA EAST OF THE MISSISSIPPI. GIVEN THE SITUATION IS CHANGING
CONSIDERABLY BASED ON NEW ECHOS ON THE REGIONAL RADARS...THE
POTENTIAL FOR SEVERE IS THERE. THE SEVERE THREAT SHOULD BE SHORT
LIVED WITH THE MAIN LINE FORMING ALONG/EAST OF THE MISSISSIPPI.

POTENTIAL FOR RECORD HIGHS MUST ALSO BE ACKNOWLEDGED AS WELL. NEW
FCST HAS BEEN SENT.            ..08..

&&

.DVN WATCHES/WARNINGS/ADVISORIES...
IA...NONE.
IL...NONE.
MO...NONE.
&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1106 AM CST MON NOV 22 2010

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-231715-
BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-JACKSON-IOWA-JOHNSON-
CEDAR-CLINTON-MUSCATINE-SCOTT-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-
HENRY IA-DES MOINES-VAN BUREN-LEE-JO DAVIESS-STEPHENSON-CARROLL-
WHITESIDE-ROCK ISLAND-HENRY IL-BUREAU-PUTNAM-MERCER-HENDERSON-
WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
1106 AM CST MON NOV 22 2010

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

THE STORM PREDICTION CENTER HAS A SLIGHT RISK OF SEVERE STORMS FOR
THIS AFTERNOON.

THUNDERSTORMS WILL RAPIDLY DEVELOP THROUGH THE AFTERNOON HOURS AND
FORM A LINE ROUGHLY ALONG THE MISSISSIPPI. WARM MOIST AIR AHEAD OF
A STRONG COLD FRONT AND WIND SHEAR ALOFT WILL ALLOW STORMS TO
BECOME STRONG.

THE MAIN THREAT APPEARS TO BE LOCALIZED DAMAGING WINDS AND LARGE HAIL.
HOWEVER...IF CONDITIONS BECOME FAVORABLE A BRIEF TORNADO CANNOT
BE RULED OUT.

THE STORMS WILL BE MOVING QUICKLY AT 45 TO 50 MPH.

A TEMPERATURE DROP WILL OCCUR ONCE THE COLD FRONT PASSES ANY
LOCATION THIS AFTERNOON OR EVENING. THE TEMPERATURE DROP IS
EXPECTED TO BE QUITE LARGE FOR AREAS ALONG AND EAST OF THE
MISSISSIPPI.

WARM TEMPERATURES...STRONG WINDS...LOW RELATIVE HUMIDITIES...AND
DRIED VEGETATION WILL COMBINE TO RESULT IN A VERY HIGH THREAT OF
GRASS FIRES THIS AFTERNOON.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON FOR AREAS ALONG
AND EAST OF THE MISSISSIPPI.