Weather Alerts
000
FLUS43 KDVN 111014
HWODVN
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
514 AM CDT THU AUG 11 2005
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-121015-
BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-JACKSON-IOWA-JOHNSON-
CEDAR-CLINTON-MUSCATINE-SCOTT-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-
HENRY-DES MOINES-VAN BUREN-LEE-JO DAVIESS-STEPHENSON-CARROLL-
WHITESIDE-ROCK ISLAND-BUREAU-PUTNAM-MERCER-HENDERSON-WARREN-
HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
514 AM CDT THU AUG 11 2005
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL
IOWA...SOUTHEAST IOWA...NORTHWEST ILLINOIS...NORTHEAST MISSOURI...
NORTHEAST IOWA...WEST CENTRAL ILLINOIS AND NORTH CENTRAL
ILLINOIS.
.DAY ONE...TODAY AND TONIGHT
SHOWERS AND THUNDERSTORMS WILL MOVE ACROSS THE AREA THIS
MORNING. SOME OF THE EMBEDDED THUNDERSTORMS MAY BE STRONG... WITH
GUSTY WINDS AND SMALL HAIL AS WELL AS BRIEF HEAVY RAINFALL... BUT
STORMS ARE NOT EXPECTED TO REACH SEVERE LIMITS AT THIS TIME.
LATER THIS AFTERNOON AND EVENING... A WARM FRONT TO THE SOUTH WILL
PUSH NORTHWARD INTO CENTRAL IOWA TODAY. THUNDERSTORMS WILL DEVELOP
LATER IN THE DAY AS THE AIR MASS BECOMES UNSTABLE NEAR AND SOUTH
OF THE FRONT. WITH THAT INSTABILITY COMBINED WITH STRONG WINDS
ALOFT... SOME OF THESE THUNDERSTORMS MAY BECOME SEVERE... WITH
LARGE HAIL AND DAMAGING WINDS THE PRIMARY THREATS. SOME OF THE
THUNDERSTORMS MAY ALSO BRING BRIEF HEAVY DOWNPOURS. STORMS MAY
DEVELOP INTO AN ORGANIZED SYSTEM THAT MOVES ACROSS THE AREA LATER
TONIGHT.
.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY
SHOWERS AND THUNDERSTORMS ARE POSSIBLE ON FRIDAY AS THE FRONT
RETREATS BACK TO THE SOUTH. WHILE THE MAIN THREAT FOR SEVERE
WEATHER IS SOUTH OF THE AREA... THUNDERSTORMS ARE POSSIBLE IN THE
AREA ON FRIDAY AFTERNOON AND EVENING... ESPECIALLY SOUTH OF
INTERSTATE 80. SHOWERS AND THUNDERSTORMS MAY DEVELOP IN THE AREA
ON SATURDAY AFTERNOON AND EVENING AS A COLD FRONT PUSHES ACROSS
THE AREA FROM THE NORTHWEST TOWARD THE SOUTHEAST. AT THIS TIME...
IT IS TOO EARLY TO DETERMINE THE THREAT FOR SEVERE WEATHER OR
HEAVY RAINFALL.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS LIKELY LATER TODAY AND TONIGHT.
$$
MAYES
SEL4
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 714
NWS STORM PREDICTION CENTER NORMAN OK
420 PM CDT THU AUG 11 2005
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
CENTRAL AND EASTERN IOWA
EXTREME NORTHWESTERN ILLINOIS
EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 420 PM UNTIL
1000 PM CDT.
HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55
STATUTE MILES EITHER SIDE OF A LINE FROM 70 MILES WEST OF DES
MOINES IOWA TO 20 MILES NORTH OF MOLINE ILLINOIS. FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU4).
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES.
DISCUSSION...STORMS ARE EXPECTED TO DEVELOP ALONG A STATIONARY
FRONT...EXTENDING ACROSS SRN IA...DURING THE NEXT COUPLE OF HOURS AS
AN MCV MOVES EWD ALONG THE IA/MO BORDER. DEEP LAYER SHEAR AT 25-30
KT AND MLCAPE VALUES AROUND 2500 J/KG WILL SUPPORT A FEW STORMS WITH
HAIL AND WIND DAMAGE. WIND DAMAGE THREAT WOULD INCREASE IF STORMS
ARE ABLE TO ORGANIZE INTO LINE SEGMENTS.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 24020.
...IMY
Counties in Iowa include:
ADAIR ADAMS APPANOOSE
AUDUBON BENTON BLACK HAWK
BOONE BUCHANAN CASS
CEDAR CLARKE CLINTON
DALLAS DAVIS DECATUR
DELAWARE DES MOINES DUBUQUE
GREENE GRUNDY GUTHRIE
HAMILTON HARDIN HENRY
IOWA JACKSON JASPER
JEFFERSON JOHNSON JONES
KEOKUK LEE LINN
LOUISA LUCAS MADISON
MAHASKA MARION MARSHALL
MONROE MUSCATINE POLK
POWESHIEK RINGGOLD SCOTT
STORY TAMA TAYLOR
UNION VAN BUREN WAPELLO
WARREN WASHINGTON WAYNE
WEBSTER