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Hazardous Weather Outlook

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
438 PM CDT THU AUG 21 2014

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-221100-
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-
438 PM CDT THU AUG 21 2014

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...TONIGHT

SCATTERED THUNDERSTORMS WILL CONTINUE TONIGHT...ESPECIALLY ALONG AND
NORTH OF INTERSTATE 80. THE MAIN THREAT WITH ISOLATED STRONGER
STORMS WILL BE STRONG WINDS OF 50 TO 60 MPH...AND HAIL UP TO
QUARTER SIZE. LOCALLY HEAVY RAIN TOTALS AROUND AN INCH ARE POSSIBLE.

THE STORM PREDICTION CENTER HAS AREAS NORTH OF HIGHWAY 34 IN A
SLIGHT RISK FOR SEVERE STORMS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THERE WILL CONTINUE TO BE PERIODIC CHANCES FOR THUNDERSTORMS THROUGH
NEXT WEDNESDAY. THE BEST CHANCES FROM FRIDAY THROUGH SUNDAY WILL BE
OVERNIGHT AND INTO THE MORNING PERIOD MAINLY ALONG AND NORTH OF
INTERSTATE 80. AT THIS TIME...IT APPEARS CONDITIONS MAY BE FAVORABLE
FOR ISOLATED STRONG TO SEVERE STORMS CAPABLE OF DAMAGING WIND
GUSTS AND LARGE HAIL DURING THE WEEKEND STORM EPISODES. A GREATER
RISK WILL BE AREAS OF LOCALLY HEAVY RAINFALL OF OVER AN INCH.

WHEN CLOUDS AND STORMS ARE NOT IMPACTING THE AREA...HOT AND HUMID
AIR WILL BUILD UP ACROSS MUCH OF THE REGION FROM FRIDAY THROUGH AT
LEAST SUNDAY. TEMPERATURES WARMING UP INTO THE 90S WITH DEW POINTS
IN THE 70S WILL ALLOW FOR HEAT INDICES TO APPROACH OR EXCEED 100
DEGREES IN SOME LOCATIONS DURING THE AFTERNOON AND EARLY EVENING.
CURRENT INDICATIONS SUGGEST AREAS ALONG AND SOUTH OF INTERSTATE 80
WILL HAVE THE BEST CHANCE FOR THESE HIGH HEAT INDICES FRIDAY AND
SATURDAY AFTERNOON. THE ENTIRE OUTLOOK AREA MAY BE AT RISK OF 100
DEGREE OR HIGHER HEAT INDICES ON SUNDAY.

.SPOTTER INFORMATION STATEMENT...

THERE IS A LOW PROBABILITY OF SPOTTER ACTIVATION TONIGHT. PLEASE REPORT
ANY WINDS OVER 40 MPH...HAIL AND RAIN TOTALS OVER AN INCH TO THE
NWS FORECAST OFFICE IN THE QUAD CITIES.

$$

RP KINNEY/NICHOLS/12





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