Alert archive / Iowa / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 149, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at May 22, 2004, 6:09 PM CDT for Boone County, Iowa. It was in force for 51 min. 5 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 22, 2004, 6:09 PM CDT (23:09 UTC)
- Expired
- May 22, 2004, 7:00 PM CDT
- In force
- 51 min
- Issued by
- NWS Des Moines, IA
- Area
- Counties, with a storm outline in the text
County Boone County, IA
The radar
The Des Moines radar (KDMX), 39 km from the middle of the area, began a volume at 23:10 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 22, 6:32 PM CDT | HAIL 0.88 | 7 Sw Boone, IA | |
| May 22, 6:58 PM CDT | HAIL 2.75 | 2 N Madrid, IA | |
| May 22, 6:59 PM CDT | HAIL 0.88 | Madrid, IA | |
| May 22, 6:59 PM CDT | HAIL 1.75 | Madrid, IA | |
| May 22, 7:02 PM CDT | HAIL 2.75 | Madrid, IA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched 2 storm reports to this severe thunderstorm warning; the first came 49 minutes after it went out.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 11.2 hours before the alert went out and 213 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1886 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- -293 m²/s²
- 0-3 km storm-relative helicity
- -132 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KDMX 222309 SVRDMX IAC015-230000- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DES MOINES IA 610 PM CDT SAT MAY 22 2004 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... BOONE COUNTY IN CENTRAL IOWA * UNTIL 700 PM CDT * AT 605 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 6 MILES SOUTHEAST OF BERKLEY...OR ABOUT 30 MILES NORTHWEST OF DES MOINES...MOVING NORTHEAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL BE... 6 MILES SOUTHEAST OF OGDEN AROUND 625 PM... 6 MILES NORTHWEST OF LUTHER AROUND 630 PM... NEAR BOONE AROUND 635 PM AND NEAR BOONE MUNICIPAL AIRPORT AROUND 640 PM. HAIL UP TO THE SIZE OF QUARTERS IS LIKELY IN THE WARNED AREA. VERY STRONG WINDS UP TO 60 MPH ARE LIKELY IN THE WARNED AREA. MOVE TO AN INTERIOR ROOM AND STAY AWAY FROM WINDOWS. IF YOU LIVE IN A MOBILE HOME...SEEK SHELTER IN A STURDY BUILDING. REPORT TORNADOES...WIND IN EXCESS OF 50 MPH...HAIL LARGER THAN ONE HALF INCH...OR STORM DAMAGE TO YOUR LOCAL LAW ENFORCEMENT. LAT...LON 4210 9417 4186 9417 4187 9371 4220 9371 $$ SMALL
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Des Moines, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at May 22, 2:09 PM CDT, 4 hours earlier.
Area forecast discussion, May 22, 2:09 PM CDT, 4 hours before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DES MOINES IA 209 PM CDT SAT MAY 22 2004 .DISCUSSION... MAIN CONCERNS FOR EARLY IN THE FORECAST PERIOD WILL BE CONVECTION THROUGH MONDAY. TODAY OUTFLOW BOUNDARY FROM MORNING CONVECTION BEGINNING TO ERODE OVER NORTHERN MISSOURI WITH A MORE SOUTHERLY PUSH BECOMING APPARENT. NEXT IN ROUND OF SHORTWAVES NOW ENTERING MIDWEST. STATIONARY BOUNDARY OVER NORTHERN IOWA BEGINNING TO SAG SOUTH WITH BOUNDARIES PRIMED TO CONVERGE. EXPLOSIVE THUNDERSTORM DEVELOPMENT APPEARS LIKELY AND FROM 18Z OAX SOUNDING...CAP IS ERODING. SUPERCELLS ARE LIKELY WITHIN THE FIRST SEVERAL HOURS OF INITIATION LATE THIS AFTERNOON AND EVENING. LARGE HAIL AND TORNADOES WILL BE THE MAIN THREATS EARLY ON. HEAVY RAIN WILL BE A CONCERN WITH THE POSSIBILITY OF TRAINING STORMS EARLY. 65-70KT 850MB JET CRANKS UP TONIGHT WITH GOOD CONVERGENCE OVER IOWA AND PLENTY OF MOISTURE FEED. CONVECTION SHOULD FORM INTO AN MCS AND TRAVEL ACROSS THE NORTHWESTERN 2/3 OF THE FORECAST AREA. WIDESPREAD 1-2 INCH AMOUNTS LIKELY WITH LOCALLY HEAVIER POSSIBLE. LOW TRACKS ACROSS CNTRL IA SUNDAY...POSSIBLE THUNDERSTORMS DEVELOPING ALONG COLD FRONT ACROSS EAST. MORE THUNDERSTORMS EXPECTED MONDAY AS NEXT SYSTEM ARRIVES. ACTIVITY FINALLY COMES TO AN END BY TUESDAY WITH COOLER AND DRY CONDITIONS EXPECTED. KEPT NEXT CHANCE FOR PRECIPITATION FRIDAY. ENSEMBLES NOT IN AGREEMENT ON SHORTWAVE TOWARDS THE END OF THE WEEK AND REMAIN CONSISTENT FOR END OF EXTENDED PERIOD. && .DMX WATCHES/WARNINGS/ADVISORIES...FLOOD WATCH TONIGHT NORTH OF INTERSTATE 80. && DONAVON
Hazardous weather outlook, May 22, 3:27 PM CDT, 2 hours 42 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DES MOINES IA 327 PM CDT SAT MAY 22 2004 IAZ004>007-015>017-024>028-036>039-048>050-060>062-231100- BLACK HAWK-BREMER-BUTLER-CERRO GORDO-EMMET-FRANKLIN-GRUNDY-HAMILTON- HANCOCK-HARDIN-HUMBOLDT-JASPER-KOSSUTH-MARSHALL-PALO ALTO-POLK- POWESHIEK-STORY-TAMA-WINNEBAGO-WORTH-WRIGHT- 327 PM CDT SAT MAY 22 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR MUCH OF CENTRAL AND NORTHERN IOWA...NORTH AND EAST OF A LINE FROM EMMETSBURG...TO DES MOINES...TO GRINNELL. .DAY ONE...TONIGHT THERE IS A MODERATE RISK OF SEVERE WEATHER FROM 6 PM TONIGHT THROUGH THE REST OF THE NIGHT. THREATS INCLUDE VERY LARGE HAIL AND DAMAGING STRAIGHT LINE WINDS. ISOLATED TORNADOES ARE ALSO POSSIBLE DURING THE EVENING HOURS. FLASH FLOODING IS ALSO POSSIBLE... ESPECIALLY ACROSS AREAS ALONG AND NORTH OF HIGHWAY 20 THAT WERE HARD HIT BY RECENT RAINS. ISOLATED 3 TO 5 INCH RAINFALL TOTALS ARE POSSIBLE BY SUNDAY MORNING. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY A THUNDERSTORM COMPLEX...WITH SOME EMBEDDED SEVERE THUNDERSTORMS POSSIBLE...WILL LIKELY BE ONGOING EARLY SUNDAY MORNING. SEVERE WEATHER IS POSSIBLE AGAIN SUNDAY AFTERNOON AND MONDAY AFTERNOON AND NIGHT. .SPOTTER ACTIVATION STATEMENT... SPOTTER ACTIVATION WILL BE NEEDED TONIGHT FOR BOTH SEVERE WEATHER AND FLOODING REPORTS. SPOTTER ACTIVATION MAY ALSO BE NEEDED AGAIN ON SUNDAY AND MONDAY. IAZ023-033>035-044>047-057>059-231100- AUDUBON-BOONE-CALHOUN-CARROLL-CRAWFORD-DALLAS-GREENE-GUTHRIE- POCAHONTAS-SAC-WEBSTER- 327 PM CDT SAT MAY 22 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR A PORTION OF WEST CENTRAL INTO CENTRAL IOWA...ALONG AND WEST OF A LINE FROM AUDUBON... TO PERRY...TO POCAHONTAS. .DAY ONE...TONIGHT THERE IS A MODERATE RISK OF SEVERE WEATHER FROM 600 PM THROUGH THE NIGHT. THREATS INCLUDE VERY LARGE HAIL AND DAMAGING STRAIGHT LINE WINDS. CONDITIONS ARE ALSO VERY FAVORABLE FOR TORNADOES DURING THE EVENING. FLASH FLOODING IS ALSO POSSIBLE...ESPECIALLY ACROSS AREAS ALONG AND NORTH OF HIGHWAY 20 THAT WERE HARD HIT BY RECENT RAINS. ISOLATED 3 TO 5 INCH RAINFALL TOTALS ARE POSSIBLE BY SUNDAY MORNING. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY SEVERE THUNDERSTORMS ARE POSSIBLE MONDAY AFTERNOON AND NIGHT. .SPOTTER ACTIVATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED TONIGHT FOR BOTH SEVERE WEATHER AND FLOODING REPORTS. SPOTTER ACTIVATION MAY ALSO BE NEEDED MONDAY AFTERNOON AND NIGHT. IAZ073>075-084>086-092>097-231100- APPANOOSE-DAVIS-DECATUR-LUCAS-MAHASKA-MARION-MONROE-RINGGOLD-TAYLOR- WAPELLO-WARREN-WAYNE- 327 PM CDT SAT MAY 22 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR MUCH OF SOUTHERN IOWA. .DAY ONE...TONIGHT THERE IS A MODERATE RISK OF SEVERE WEATHER FROM 600 PM TONIGHT THROUGH THE REST OF THE NIGHT. THREATS INCLUDE VERY LARGE HAIL AND DAMAGING STRAIGHT LINE WINDS. CONDITIONS ARE ALSO FAVORABLE FOR STRONG TORNADOES. EVENING HOURS. ISOLATED FLASH FLOODING CANNOT BE RULED OUT...BUT IS NOT LIKELY. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY SEVERE THUNDERSTORMS ARE POSSIBLE SUNDAY AFTERNOON AND AGAIN MONDAY AFTERNOON AND NIGHT. .SPOTTER ACTIVATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TONIGHT. SPOTTER ACTIVATION MAY ALSO BE NEEDED AGAIN ON SUNDAY AFTERNOON AND MONDAY. IAZ070>072-081>083-231100- ADAIR-ADAMS-CASS-CLARKE-MADISON-UNION- 327 PM CDT SAT MAY 22 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR A PORTION OF SOUTHERN IOWA. .DAY ONE...TONIGHT THERE IS A MODERATE RISK OF SEVERE WEATHER FROM 600 PM THIS EVENING THROUGH THE REST OF THE NIGHT. THREATS INCLUDE VERY LARGE HAIL AND DAMAGING STRAIGHT LINE WINDS. CONDITIONS ARE ALSO VERY FAVORABLE FOR STRONG TORNADOES DURING THE EVENING. ISOLATED FLASH FLOODING CANNOT BE RULED OUT...BUT IS NOT LIKELY. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY SEVERE WEATHER IS POSSIBLE MONDAY AFTERNOON AND NIGHT. .SPOTTER ACTIVATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED TONIGHT. SPOTTER ACTIVATION MAY ALSO BE NEEDED MONDAY AFTERNOON AND NIGHT.
In the hours before
Local storm report, May 22, 5:41 PM CDT, 28 minutes before
PRELIMINARY LOCAL STORM REPORT ... SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
541 PM CDT SAT MAY 22 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
1115 AM HAIL BRITT 43.10N 93.80W
05/21/2004 0.88 INCH HANCOCK IA PUBLIC
1125 AM HAIL 5 NW NORTHWOOD 43.50N 93.29W
05/21/2004 1.00 INCH WORTH IA LAW ENFORCEMENT
1125 AM HAIL BRITT 43.10N 93.80W
05/21/2004 1.00 INCH HANCOCK IA TRAINED SPOTTER
1130 AM HAIL 2 E RUTHVEN 43.13N 94.86W
05/21/2004 1.75 INCH PALO ALTO IA BROADCAST MEDIA
REPORT RECEIVED FROM KICD RADIO
1131 AM HAIL RUTHVEN 43.13N 94.90W
05/21/2004 1.00 INCH PALO ALTO IA LAW ENFORCEMENT
1140 AM HAIL 1 S NORTHWOOD 43.43N 93.22W
05/21/2004 0.75 INCH WORTH IA TRAINED SPOTTER
1235 PM HAIL 3 W GREENE 42.90N 92.86W
05/21/2004 0.75 INCH BUTLER IA TRAINED SPOTTER
0152 PM HAIL STEAMBOAT ROCK 42.41N 93.07W
05/21/2004 0.88 INCH HARDIN IA TRAINED SPOTTER
REPORTED BY TRAINED SPOTTER.
0220 PM HAIL WEBSTER CITY 42.46N 93.82W
05/21/2004 1.00 INCH HAMILTON IA TRAINED SPOTTER
0221 PM HAIL 2 E DOWS 42.66N 93.46W
05/21/2004 0.75 INCH FRANKLIN IA TRAINED SPOTTER
0228 PM TORNADO 2 W HOLLAND 42.40N 92.84W
05/21/2004 GRUNDY IA LAW ENFORCEMENT
0231 PM HAIL SE POPEJOY 42.59N 93.43W
05/21/2004 0.88 INCH FRANKLIN IA TRAINED SPOTTER
0232 PM TORNADO 3 W HOLLAND 42.40N 92.86W
05/21/2004 GRUNDY IA AMATEUR RADIO
0232 PM TORNADO 1 E HOLLAND 42.40N 92.78W
05/21/2004 GRUNDY IA AMATEUR RADIO
CORRECTION ON LOCATION...ORIGINAL REPORT HAD 3 WEST OF
HOLLAND AND IT SHOULD BE 1 EAST OF HOLLAND.
0238 PM TORNADO 3 N GRUNDY CENTER 42.41N 92.77W
05/21/2004 GRUNDY IA LAW ENFORCEMENT
TORNADO CROSSING HIGHWAY 14 WITH DEBRIS. STATE PATROL
REPORT.
0242 PM HAIL DIKE 42.46N 92.63W
05/21/2004 0.88 INCH GRUNDY IA AMATEUR RADIO
0242 PM TORNADO 4 NE GRUNDY CENTER 42.40N 92.72W
05/21/2004 GRUNDY IA LAW ENFORCEMENT
STATE PATROL REPORT OF TWO SIMULATNEOUS TORNADOES.
0249 PM TORNADO 7 SW DIKE 42.39N 92.73W
05/21/2004 GRUNDY IA TRAINED SPOTTER
MOVING NORTHEAST TOWARD DIKE.
0250 PM HAIL ALDEN 42.51N 93.38W
05/21/2004 1.00 INCH HARDIN IA TRAINED SPOTTER
0253 PM HAIL 2 NW DIKE 42.48N 92.66W
05/21/2004 1.75 INCH GRUNDY IA LAW ENFORCEMENT
0253 PM TSTM WND DMG 9 E POPEJOY 42.59N 93.25W
05/21/2004 FRANKLIN IA PUBLIC
OUTBUILDINGS DAMAGED. TREES DOWN.
0300 PM HAIL ALDEN 42.51N 93.38W
05/21/2004 1.00 INCH HARDIN IA LAW ENFORCEMENT
0306 PM HAIL GRUNDY CENTER 42.36N 92.77W
05/21/2004 0.88 INCH GRUNDY IA TRAINED SPOTTER
0315 PM TORNADO 10 W GRUNDY CENTER 42.36N 92.97W
05/21/2004 GRUNDY IA AMATEUR RADIO
ON STATE HIGHWAY 175
0315 PM HAIL TRAER 42.19N 92.46W
05/21/2004 1.25 INCH TAMA IA TRAINED SPOTTER
0316 PM HAIL TRAER 42.19N 92.46W
05/21/2004 1.00 INCH TAMA IA LAW ENFORCEMENT
0317 PM HAIL DIKE 42.46N 92.63W
05/21/2004 1.00 INCH GRUNDY IA TRAINED SPOTTER
0321 PM TORNADO 3 S WATERLOO 42.45N 92.35W
05/21/2004 BLACK HAWK IA PUBLIC
0321 PM HAIL WATERLOO 42.49N 92.35W
05/21/2004 1.00 INCH BLACK HAWK IA TRAINED SPOTTER
NICKEL TO QUARTER SIZED HAIL REPORTED BY TRAINED SPOTTER.
0321 PM HAIL WATERLOO 42.49N 92.35W
05/21/2004 1.00 INCH BLACK HAWK IA TRAINED SPOTTER
0322 PM TORNADO 5 NW GRUNDY CENTER 42.41N 92.84W
05/21/2004 GRUNDY IA AMATEUR RADIO
0330 PM HAIL WATERLOO 42.49N 92.35W
05/21/2004 1.75 INCH BLACK HAWK IA BROADCAST MEDIA
0333 PM TSTM WND GST 4 NW CEDAR FALLS 42.56N 92.51W
05/21/2004 60 MPH BLACK HAWK IA LAW ENFORCEMENT
0335 PM TSTM WND DMG EVANSDALE 42.46N 92.28W
05/21/2004 BLACK HAWK IA AMATEUR RADIO
TREES DOWN ON LAFAYETTE ST.
0341 PM HAIL WATERLOO 42.49N 92.35W
05/21/2004 0.88 INCH BLACK HAWK IA LAW ENFORCEMENT
0342 PM HAIL GRUNDY CENTER 42.36N 92.77W
05/21/2004 1.75 INCH GRUNDY IA LAW ENFORCEMENT
HIGHWAY 175 WEST OF GRUNDY CENTER
0345 PM HAIL 1 SE RAYMOND 42.46N 92.21W
05/21/2004 0.88 INCH BLACK HAWK IA EMERGENCY MNGR
0345 PM HAIL 4 SE WATERLOO 42.45N 92.30W
05/21/2004 0.88 INCH BLACK HAWK IA EMERGENCY MNGR
ESTIMATED 4 MI SE OF WATERLOO, MM65, I380
0404 PM HAIL WATERLOO 42.49N 92.35W
05/21/2004 0.75 INCH BLACK HAWK IA TRAINED SPOTTER
0410 PM TSTM WND DMG 2 N TRAER 42.22N 92.46W
05/21/2004 TAMA IA TRAINED SPOTTER
NUMEROUS TREES DOWN 1-2 MI NORTH OF TRAER
0416 PM HAIL TRAER 42.19N 92.46W
05/21/2004 1.00 INCH TAMA IA TRAINED SPOTTER
0420 PM HAIL 2 NW DYSART 42.19N 92.34W
05/21/2004 0.88 INCH TAMA IA TRAINED SPOTTER
0423 PM TSTM WND GST 3 N CLUTIER 42.12N 92.40W
05/21/2004 60 MPH TAMA IA TRAINED SPOTTER
0539 PM HAIL 5 N MESERVEY 42.98N 93.46W
05/21/2004 1.00 INCH CERRO GORDO IA TRAINED SPOTTER
0555 PM HAIL CLEAR LAKE 43.14N 93.37W
05/21/2004 1.00 INCH CERRO GORDO IA NWS EMPLOYEE
0557 PM HAIL 2 E PLAINFIELD 42.84N 92.50W
05/21/2004 1.00 INCH BREMER IA TRAINED SPOTTER
DELAYED REPORT.
0600 PM HAIL 1 SSW GRUNDY CENTER 42.36N 92.78W
05/21/2004 0.75 INCH GRUNDY IA TRAINED SPOTTER
0602 PM HAIL N CLEAR LAKE 43.13N 93.38W
05/21/2004 0.88 INCH CERRO GORDO IA TRAINED SPOTTER
0602 PM HAIL GRUNDY CENTER 42.36N 92.77W
05/21/2004 1.75 INCH GRUNDY IA LAW ENFORCEMENT
WEST SIDE OF CITY.
0607 PM HAIL 5 NNE MESERVEY 42.97N 93.42W
05/21/2004 0.88 INCH CERRO GORDO IA TRAINED SPOTTER
0609 PM HAIL 2 E PLAINFIELD 42.84N 92.50W
05/21/2004 1.00 INCH BREMER IA TRAINED SPOTTER
0610 PM TORNADO 1 E ROLFE 42.81N 94.53W
05/21/2004 POCAHONTAS IA LAW ENFORCEMENT
RELAYED VIA AMATEUR RADIO.
0610 PM TORNADO ROLFE 42.81N 94.53W
05/21/2004 POCAHONTAS IA LAW ENFORCEMENT
THREE TORNADOES. NUMEROUS INJURIES. CONSIDERABLE PROPERTY
DAMAGE.
0615 PM FLOOD ALGONA 43.07N 94.23W
05/21/2004 KOSSUTH IA EMERGENCY MNGR
ROADS UNDERWATER THROUGHOUT SOUTHERN KOSSUTH COUNTY. 3
FEET OF WATER OVER SEVERAL ROADS. CARS STALLED ALONG
HIGHWAY 18 IN ALGONA.
0622 PM TORNADO 2 E ROLFE 42.81N 94.49W
05/21/2004 POCAHONTAS IA AMATEUR RADIO
0623 PM TORNADO BRADGATE 42.80N 94.42W
05/21/2004 HUMBOLDT IA BROADCAST MEDIA
HOMES DAMAGED AND INJURIES.
0640 PM HAIL 4 SW ALGONA 43.03N 94.29W
05/21/2004 1.00 INCH KOSSUTH IA EMERGENCY MNGR
FIELDS AND DITCHES FLOODED DUE TO HEAVY RAIN.
0646 PM HAIL 1 S ROLFE 42.80N 94.53W
05/21/2004 0.75 INCH POCAHONTAS IA STORM CHASER
RELAYED VIA AMATEUR RADIO.
0652 PM HAIL 4 N NEW HARTFORD 42.62N 92.63W
05/21/2004 1.00 INCH BUTLER IA TRAINED SPOTTER
0655 PM HAIL RENWICK 42.83N 93.98W
05/21/2004 1.00 INCH HUMBOLDT IA STORM CHASER
0712 PM HAIL KANAWHA 42.93N 93.79W
05/21/2004 0.88 INCH HANCOCK IA TRAINED SPOTTER
0726 PM FLOOD 6 SW MASON CITY 43.09N 93.28W
05/21/2004 CERRO GORDO IA AMATEUR RADIO
WATER COVERING ROADS. VISIBLE FROM INTERSTATE 35.
0730 PM TORNADO 6 NW CLARION 42.79N 93.82W
05/21/2004 WRIGHT IA PUBLIC
RELAYED FROM LAW ENFORCEMENT. DELAYED REPORT.
0730 PM TSTM WND GST 4 W CLARION 42.73N 93.81W
05/21/2004 60 MPH WRIGHT IA LAW ENFORCEMENT
DELAYED REPORT.
0733 PM FLOOD GOODELL 42.92N 93.61W
05/21/2004 HANCOCK IA AMATEUR RADIO
WATER COVERING ROADS AND FIELDS.
0735 PM HAIL NNW CLARION 42.73N 93.73W
05/21/2004 0.88 INCH WRIGHT IA LAW ENFORCEMENT
DELAYED REPORT.
0801 PM FLOOD GOODELL 42.92N 93.61W
05/21/2004 HANCOCK IA TRAINED SPOTTER
WATER OVER 130TH STREET AT HIGHWAY 69.
0803 PM FLOOD S MASON CITY 43.15N 93.20W
05/21/2004 CERRO GORDO IA LAW ENFORCEMENT
WATER OVER ROADS OVER SOUTHERN PART OF CERRO GORDO
COUNTY. ALONG HIGHWAY 65, 2 TO 3 INCHES DEEP AND CLIMBING
BETWEEN THE AVENUE OF THE SAINTS AND ROCKWELL.
0803 PM HEAVY RAIN N ROCKWELL 42.99N 93.19W
05/21/2004 2.50 INCH CERRO GORDO IA TRAINED SPOTTER
IN LESS THAN ONE HOUR.
0805 PM TSTM WND DMG 4 S DOWS 42.60N 93.50W
05/21/2004 WRIGHT IA EMERGENCY MNGR
BARN AND GRAIN BINDS DESTROYED
0815 PM FLASH FLOOD 4 N CLARKSVILLE 42.84N 92.67W
05/21/2004 BUTLER IA LAW ENFORCEMENT
WATER OVER ROAD ... UNKNOWN DEPTH
0819 PM TSTM WND GST 4 W WAVERLY 42.73N 92.55W
05/21/2004 60 MPH BREMER IA TRAINED SPOTTER
0823 PM TSTM WND GST WAVERLY 42.73N 92.47W
05/21/2004 60 MPH BREMER IA TRAINED SPOTTER
0835 PM FLOOD WAVERLY 42.73N 92.47W
05/21/2004 BREMER IA TRAINED SPOTTER
STREET FLOODING. 3 TO 6 INCHES OF STANDING WATER.
0850 PM TSTM WND GST 1 SE READLYN 42.69N 92.21W
05/21/2004 60 MPH BREMER IA TRAINED SPOTTER
0852 PM FLASH FLOOD 1 NW FREDERIKA 42.89N 92.32W
05/21/2004 BREMER IA PUBLIC
CORRECTION TO PREVIOUS REPORT...BREMER COUNTY...1 1/2
FOOT WATER AND DEBRIS OVER HIGHWAY 63
0943 PM FLASH FLOOD ALLISON 42.75N 92.80W
05/21/2004 BUTLER IA EMERGENCY MNGR
BUTLER COUNTY FLOOD WATERS OVER LESSER MAINTAINED COUNTY
ROADS AND CULVERTS...MAIN ROADS NOT FLOODED
0943 PM TSTM WND DMG WAVERLY 42.73N 92.47W
05/21/2004 BREMER IA EMERGENCY MNGR
WAVERLY WITHOUT POWER DUE TO SEVERE THUNDERSTORM
LIGHTNING AND WIND DAMAGE
1033 PM FLOOD 2 N SHELL ROCK 42.74N 92.58W
05/21/2004 BUTLER IA TRAINED SPOTTER
ON COUNTY ROAD T63, DITCHES AND SEVERAL FIELDS FULL WITH
WATER. DRIVEWAYS COVERED WITH WATER. FEW STREETS IN NEW
HARTFORD COVERED UNDER 2 TO 4 INCHES OF WATER.
1045 PM FLASH FLOOD CLARKSVILLE 42.78N 92.67W
05/21/2004 BUTLER IA FIRE DEPT/RESCUE
FLOODING OCCURRED ON COUNTY ROADS WITH SOME GRAVEL ROADS
WASHED OUT.
1059 PM HAIL MALLARD 42.94N 94.68W
05/21/2004 0.75 INCH PALO ALTO IA BROADCAST MEDIA
1102 PM HAIL
MANLY 43.29N 93.20W
05/21/2004 1.00 INCH WORTH IA BROADCAST MEDIA
1120 PM FLASH FLOOD ROCKWELL 42.98N 93.19W
05/21/2004 CERRO GORDO IA LAW ENFORCEMENT
NUMEROUS ROADS FLOODED WITH AFFECTED AREA EXPANDING INTO
SOUTHWEST PORTION OF COUNTY. SOME GRAVEL ROADS WASHED OUT
IN PAST HOUR.
1135 PM FLASH FLOOD MASON CITY 43.15N 93.20W
05/21/2004 CERRO GORDO IA EMERGENCY MNGR
EVACUATIONS OCCURRING DUE TO RAPID FLOODING. DETAILS
UNKNOWN.
1220 AM FLASH FLOOD JOICE 43.36N 93.46W
05/22/2004 WORTH IA LAW ENFORCEMENT
MAIN STREET FLOODED.
1220 AM FLASH FLOOD 2 E HANLONTOWN 43.28N 93.34W
05/22/2004 WORTH IA LAW ENFORCEMENT
WATER FLOWING OVER COUNTY ROADS ADJACENT TO I-35 IN
SOUTHERN 10 MILES OF COUNTY.
1235 AM FLASH FLOOD EAGLE GROVE 42.67N 93.90W
05/22/2004 WRIGHT IA BROADCAST MEDIA
2-3 FEET OF WATER ON SOME SIDE STREETS.
0144 AM TSTM WND GST TRIPOLI 42.81N 92.26W
05/22/2004 64 MPH BREMER IA MESONET
0508 AM TSTM WND GST ATLANTIC 41.40N 95.01W
05/22/2004 60 MPH CASS IA AWOS
&&
ROLFE TORNADO WAS RATED F1. BRADGATE F2. FULL EVENT NARRATIVE WILL
BE ISSUED LATER THIS EVENING.
KJThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 7:16 PM CDT | Tornado Warning | DMX | Wright | 29 min |
| May 21, 7:31 PM CDT | Severe Thunderstorm Warning | DMX | Bremer | 44 min |
| May 21, 7:36 PM CDT | Severe Thunderstorm Warning | DMX | Franklin | 54 min |
| May 21, 7:41 PM CDT | Flash Flood Warning | DMX | Bremer, Butler | 17 hr |
| May 21, 7:46 PM CDT | Severe Thunderstorm Warning | DMX | Wright | 14 min |
| May 21, 8:12 PM CDT | Tornado Warning | DMX | Bremer | 48 min |
| May 21, 8:59 PM CDT | Severe Thunderstorm Warning | DMX | Palo Alto | 31 min |
| May 21, 10:00 PM CDT | Flash Flood Warning | DMX | Kossuth, Winnebago, Worth | 18 hr |
| May 21, 10:39 PM CDT | Severe Thunderstorm Warning | DMX | Palo Alto, Pocahontas | 51 min |
| May 21, 11:10 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Kossuth | 50 min |
| May 21, 11:16 PM CDT | Severe Thunderstorm Warning | DMX | Sac | 44 min |
| May 21, 11:54 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock | 51 min |
| May 22, 12:07 AM CDT | Tornado Warning | DMX | Hamilton | 38 min |
| May 22, 6:35 PM CDT | Severe Thunderstorm Warning | DMX | Adair | 25 min |
| May 22, 6:40 PM CDT | Severe Thunderstorm Warning | DMX | Carroll | 50 min |
| May 22, 6:41 PM CDT | Tornado Warning | DMX | Boone | 34 min |
| May 22, 6:51 PM CDT | Tornado Warning | DMX | Carroll | 39 min |
| May 22, 6:55 PM CDT | Severe Thunderstorm Warning | DMX | Story | 50 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2004Every severe thunderstorm warning in 2004
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.