Severe Thunderstorm Warning 41, NWS Des Moines, IA

000 
WWUS53 KDMX 220229
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
928 PM CDT THU APR 21 2005

IAC053-159-220300-
/O.CON.KDMX.SV.W.0041.000000T0000Z-050422T0300Z/
RINGGOLD IA-DECATUR IA-
928 PM CDT THU APR 21 2005

...A SEVERE THUNDERSTORM WARNING CONTINUES FOR NORTHWESTERN DECATUR
AND NORTHEASTERN RINGGOLD COUNTIES UNTIL 1000 PM CDT...

AT 926 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL.  THIS
STORM WAS LOCATED 11 MILES WEST OF LEON...OR 57 MILES SOUTH OF DES 
MOINES...AND MOVING NORTHEAST AT 35 MPH.  THIS IS A NEW CELL BEHIND 
THE ORIGINALLY WARNED STORM WHICH HAS DISSIPATED.  

THE SEVERE THUNDERSTORM WILL BE...
  NEAR GRAND RIVER BY 925 PM CDT.

THE LOCATION OF BEACONSFIELD IS ALSO IN THE PATH OF THIS SEVERE
THUNDERSTORM.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND LIGHTNING.
PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG
BUILDING BUT AWAY FROM WINDOWS.

IF SEVERE WEATHER WAS OBSERVED...CONTACT THE NATIONAL WEATHER SERVICE
OFFICE IN DES MOINES AT 1-800-759-9276.

LAT...LON 4073 9421 4073 9397 4090 9381 4090 9422

$$

SMALL

000 
WWUS53 KDMX 220250
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
947 PM CDT THU APR 21 2005

IAC053-159-220257-
/O.CAN.KDMX.SV.W.0041.000000T0000Z-050422T0300Z/
RINGGOLD IA-DECATUR IA-
947 PM CDT THU APR 21 2005

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN DECATUR AND
NORTHEASTERN RINGGOLD COUNTIES HAS BEEN CANCELLED...

AT 943 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT THE THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE WEAKENED AND 
NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY. 
THEREFORE...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.

HEAVY RAINS IN EXCESS OF AN INCH PER HOUR MAY STILL OCCUR 
HOWEVER...MAINLY AFFECTING THE NORTHERN PORTION OF DECATUR COUNTY.  
THESE HEAVY RAINS MAY PRODUCE LOW VISIBILITIES...PONDING WATER ON 
ROADS...AND RAPID RISES IN SMALL STREAMS AND CREEKS.

IF SEVERE WEATHER WAS OBSERVED...CONTACT THE NATIONAL WEATHER SERVICE
OFFICE IN DES MOINES AT 1-800-759-9276.

LAT...LON 4073 9421 4073 9397 4090 9381 4090 9422

$$

SMALL

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DES MOINES IA
315 PM CST WED APR 21 2005

.DISCUSSION...
MAIN PROB TDA IS WITH WRM FNTL BNDRY TO THE S OF THE CWA.  RAIN
COOLED AIR AND ELY FLOW CONT TO HOLD BNDRY TO THE S WITH LTL NWD
PROGRESS DURG THE AFTN.  FEEL MAIN TSRA THREAT WL BE S OF THE CWA,
HWVR SWRN FEW COUNTIES ARE AT RISK WITH WRMFNT LKLY TO GET CLOSE TO
THE AREA.  OTR CONCERN IS WITH RAFL AMTS.  PLENTY OF MSTR WITH SYS
WITH WITH REENT RAINS, IT WONT TAKE A GREAT DEAL TO CAUSE PROBS.
CUR FFA LKS GUD IN AREAL EXTENT AND TIMING.  SIG CHNG TO COLDER WX
AFT LOW FM RCKYS GETS CAUGHT UP IN NRN STREAM AND WL SEE TEMPS
FALLING TO WITHIN 5 DEG OR SO OF REC LOWS BY SAT MRNG.  COOL WX WL
REMAIN THRU REST OF FCST PD WITH SLGT MODERATION.  FCSTS WL CARRY
MNTN OF FROST FRI NGT AND SAT NGT AND WUD XPCT TO NEED TO ISSUE ADVY
IN PACKAGE FRI AFTN.  NO REAL WX MAKERS UNTIL SHWR ACTVTY ARRIVES IN
MON NGT INTO TUE PERIOD WITH NRN STREAM SYS.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH THIS EVENING AND OVERNIGHT FOR ALL AREAS ALONG AND
EAST OF INTERSTATE 35 AND ALONG AND SOUTH OF HIGHWAY 20.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
1000 AM CDT THU APR 21 2005

IAZ004-005-015-023-024-221115-
EMMET-KOSSUTH-PALO ALTO-POCAHONTAS-HUMBOLDT-
1000 AM CDT THU APR 21 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST IOWA.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS ARE EXPECTED TO DEVELOP LATE THIS AFTERNOON AND
TONIGHT. A FEW STORMS MAY CONTAIN HEAVY RAIN WITH RAINFALL AMOUNTS
OF ONE TO THREE INCHES WHICH WILL CAUSE SOME PONDING OF
WATER...ESPECIALLY ON ROADWAYS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY
GUSTY NORTH WINDS WILL RETURN TO THE AREA ON FRIDAY WITH WINDS OF
20 TO 35 MPH AND GUSTS UP TO 45 MPH. TEMPERATURES WILL DROP TO
NEAR OR BELOW FREEZING FRIDAY NIGHT AND SATURDAY NIGHT AND WILL
BRING THE CHANCE OF FROST TO THE AREA.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED BUT RAINFALL REPORTS WILL BE
APPRECIATED THIS AFTERNOON AND TONIGHT.  EMERGENCY MANAGEMENT
BRIEFING CONFERENCE CALL TO BE HELD AT 1 PM TODAY. CALL CONCERNS
SEVERE WEATHER AND FLASH FLOOD POTENTIAL.

IAZ006-007-016-017-025>028-033>039-044>050-221115-
WINNEBAGO-WORTH-HANCOCK-CERRO GORDO-WRIGHT-FRANKLIN-BUTLER-BREMER-
SAC-CALHOUN-WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-CRAWFORD-
CARROLL-GREENE-BOONE-STORY-MARSHALL-TAMA-
1000 AM CDT THU APR 21 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA...
NORTHEAST IOWA AND WEST CENTRAL IOWA.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS ARE EXPECTED TO DEVELOP LATE THIS AFTERNOON AND
TONIGHT. A FEW STORMS MAY CONTAIN HEAVY RAIN WITH RAINFALL AMOUNTS
OF ONE TO THREE INCHES AND ISOLATED 4 INCH AMOUNTS. PORTIONS OF
THE AREA HAVE RECEIVED HEAVY RAIN RECENTLY. ADDITIONAL HEAVY
RAINFALL WILL CAUSE SIGNIFICANT PONDING OF WATER ON ROADWAYS AND
LOW LAND FLOODING ALONG WITH RAPID RISES ON AREA STREAMS AND
RIVERS. A FEW STORMS MAY ALSO BE SEVERE WITH QUARTER SIZED HAIL
AND WINDS TO 60 MPH. THE GREATEST THREAT FOR SEVERE WEATHER WILL
BE ALONG AND SOUTH OF HIGHWAY 20.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

GUSTY NORTH WINDS WILL RETURN TO THE AREA ON FRIDAY WITH WINDS OF
20 TO 35 MPH AND GUSTS UP TO 45 MPH. TEMPERATURES WILL DROP TO
NEAR OR BELOW FREEZING FRIDAY NIGHT AND SATURDAY NIGHT AND WILL
BRING THE CHANCE OF FROST TO THE AREA.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS LIKELY FOR THIS AFTERNOON AND EVENING
BETWEEN 4 PM AND 2 AM FOR HEAVY RAINFALL REPORTS AND ISOLATED SEVERE
THUNDERSTORM EVENTS.  EMERGENCY MANAGEMENT BRIEFING CONFERENCE CALL
TO BE HELD AT 1 PM TODAY. CALL CONCERNS SEVERE WEATHER AND FLASH
FLOOD POTENTIAL.

IAZ057>062-070>075-081>086-092>097-221115-
AUDUBON-GUTHRIE-DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON-
WARREN-MARION-MAHASKA-ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO-
TAYLOR-RINGGOLD-DECATUR-WAYNE-APPANOOSE-DAVIS-
1000 AM CDT THU APR 21 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHERN IOWA
ALONG AND SOUTH OF INTERSTATE 80.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS ARE EXPECTED TO DEVELOP LATE THIS AFTERNOON AND
TONIGHT. A FEW STORMS MAY CONTAIN HEAVY RAIN WITH RAINFALL AMOUNTS
OF ONE TO THREE INCHES AND ISOLATED 4 INCH AMOUNTS. PORTIONS OF
THE AREA HAVE RECEIVED HEAVY RAIN RECENTLY. ADDITIONAL HEAVY
RAINFALL WILL CAUSE SIGNIFICANT PONDING OF WATER ON ROADWAYS AND
LOW LAND FLOODING ALONG WITH RAPID RISES ON AREA STREAMS AND
RIVERS. THERE IS A SLIGHT RISK OF SEVERE WEATHER THIS AFTERNOON
AND EVENING. HAIL UP TO 1.5 INCHES AND WINDS TO 65 MPH ARE
POSSIBLE. AN ISOLATED TORNADO IS ALSO POSSIBLE BETWEEN 4 PM AND 8
PM.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

GUSTY NORTH WINDS WILL RETURN TO THE AREA ON FRIDAY WITH WINDS OF
20 TO 35 MPH AND GUSTS UP TO 45 MPH. TEMPERATURES WILL DROP TO
NEAR OR BELOW FREEZING FRIDAY NIGHT AND SATURDAY NIGHT AND WILL
BRING THE CHANCE OF FROST TO THE AREA.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS LIKELY TODAY AND TONIGHT FOR HEAVY RAINFALL
REPORTS AND SEVERE WEATHER ESPECIALLY BETWEEN 4 PM AND 2 AM.
EMERGENCY MANAGEMENT BRIEFING CONFERENCE CALL TO BE HELD AT 1 PM
TODAY. CALL CONCERNS SEVERE WEATHER AND FLASH FLOOD POTENTIAL.

DONAVON/JOHNSON