Alert archive / Iowa / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 444, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Sep 14, 2004, 7:16 PM CDT for Crawford County, Iowa. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 14, 2004, 7:16 PM CDT (00:16 UTC)
- Expired
- Sep 14, 2004, 8:00 PM CDT
- In force
- 44 min
- Issued by
- NWS Des Moines, IA
- Area
- Counties, with a storm outline in the text
County Crawford County, IA
The radar
The Omaha radar (KOAX), 117 km from the middle of the area, began a volume at 00:16 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 14, 2:45 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 0.3 hours before the alert went out and 117 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
- 1520 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 1898 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 183 m²/s²
- 0-3 km storm-relative helicity
- 290 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 8.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KDMX 150016 SVRDMX IAC047-150100- /X.NEW.KDMX.SV.W.0009.040915T0016Z-040915T0100Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DES MOINES IA 716 PM CDT TUE SEP 14 2004 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CRAWFORD COUNTY IN WEST CENTRAL IOWA. * UNTIL 800 PM CDT. * AT 712 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 6 MILES SOUTHWEST OF DENISON...OR 74 MILES SOUTHWEST OF FORT DODGE...AND MOVING NORTHEAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE... 6 MILES SOUTHEAST OF DELOIT BY 730 PM CDT. NEAR VAIL BY 735 PM CDT. THE LOCATIONS OF BUCK GROVE...ARION AND DENISON MUNICIPAL AIRPORT ARE ALSO IN THE PATH OF THIS SEVERE THUNDERSTORM. 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 NATIONAL WEATHER SERVICE IN DES MOINES AT 1-800-759-9276. LAT...LON 4219 9554 4188 9558 4187 9511 4220 9511 $$ DONAVON
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 Sep 14, 3:50 PM CDT, 3 hours 26 minutes earlier.
Area forecast discussion, Sep 14, 3:50 PM CDT, 3 hours 26 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DES MOINES IA 350 PM CDT TUE SEP 14 2004 .DISCUSSION... MAIN FOCUS IN CONVECTIVE TRENDS AND SVR/FF POTENTIAL TONIGHT INTO EARLY WEDNESDAY. SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 10 PM TONIGHT FOR MUCH OF THE CWA. LOW LEVEL SHEAR AND LOW LCLS SUPPORT SOME TORNADO THREAT INITIALLY NEAR THE BOUNDARY STRETCHED ACROSS THE CENTRAL FORECAST AREA. THREAT TO LIKELY EVOLVE QUICKLY INTO MULTI-CELLULAR WIND/HAIL THREAT THEN HEAVY RAIN OVERNIGHT. HAVE ISSUED FLOOD WATCH FOR FLASH FLOOD POTENTIAL ACROSS THE NORTH CENTRAL COUNTIES. ETA QPF AND HEAVY RAIN AXIS HAVE BEEN FAIRLY CONSISTENT WITH A SLIGHT NORTHWARD SHIFT AND HAVE FOLLOWED CLOSELY. EXPECT WIDESPREAD 1-3 INCH AMOUNTS AND ISOLD 4-5 WITH EXPECTED TRAINING OVERNIGHT AS CORFIDI VECTORS OPPOSE MEAN FLOW. THE AREA CAN TAKE PLENTY OF RAIN DESPITE LAST NIGHTS CONVECTION THERE...SO FEEL THE FF THREAT WILL BE PRIMARILY IN URBAN AREAS...WITH ONLY ISOLD PROBLEMS FROM CREEKS/STREAMS/DITCHES. SFC LOW AND TRAILING FRONT WILL SWEEP THROUGH CENTRAL IOWA WEDNESDAY...WITH MUCH OF THE PRECIP CLEARING OUT BY LATE AFTERNOON. DRY FORECAST MAINTAINED WED NIGHT THROUGH FRIDAY. A NICE COOLDOWN IS IN STORE FOR THE NEXT COUPLE OF DAYS BEFORE A WARMING TREND STARTING FRIDAY. ETA MOS AGAIN LOOKS GOOD AND FOLLOWED CLOSELY WITH ADJUSTMENTS FOR URBAN/TERRAIN EFFECTS. IN THE EXTENDED FORECAST (SAT-TUES)...THE MEDIUM RANGE MODELS CONTINUE TO BE SIMILAR WITH THE HANDLING OF THE DEEP WESTERN U.S. TROUGH...AND VARY WIDELY IN HANDLING IVANS EVOLUTION. THE DGEX APPEARS TO BE A REASONABLE COMPROMISE...AND WITH SUCH A DEEP H5 TROUGH...I AGREE WITH THE SLOWER TIMING OF THE COLD FRONT. WILL INTRODUCE POPS IN THE WEST MONDAY NIGHT...AND OVER ENTIRE CWA ON TUESDAY. SOME UPWARD ADJUSTMENTS TO TEMPERATURES MADE THROUGH MONDAY WITH THE SLOWER TIMING...WITH COOLER AIR FINALLY WORKING INTO THE STATE ON TUESDAY. && .DMX WATCHES/WARNINGS/ADVISORIES...FLOOD WATCH TONIGHT THROUGH WEDNESDAY MORNING NORTH CENTRAL IOWA. && KINNEY
Hazardous weather outlook, Sep 14, 3:36 PM CDT, 3 hours 40 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DES MOINES IA 336 PM CDT TUE SEP 14 2004 IAZ004>007-015>017-023-024-033-151100- CERRO GORDO-EMMET-HANCOCK-HUMBOLDT-KOSSUTH-PALO ALTO-POCAHONTAS-SAC- WINNEBAGO-WORTH- 336 PM CDT TUE SEP 14 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR A PORTION OF CENTRAL IOWA MAINLY NORTH OF A LINE FROM SAC CITY TO HUMBOLDT TO MASON CITY. .DAY ONE...TODAY AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS LATE THIS AFTERNOON AND EVENING. THERE IS A CONTINUED RISK OF FLASH FLOODING THIS EVENING THROUGH NOON WEDNESDAY WITH ISOLATED RAINFALL AMOUNTS OF FOUR TO FIVE INCHES. ALTHOUGH AN ISOLATED TORNADO CANNOT BE RULED OUT LATE THIS AFTERNOON AND EARLY EVENING...THE MAIN THREAT FROM THE STORMS WILL BE QUARTER SIZE HAIL AND 60 TO 70 MPH WINDS. THE WIND AND HAIL THREAT SHOULD DIMINISH BY MIDNIGHT...BUT THE HEAVY RAINFALL AND FLASH FLOOD THREAT WILL PERSIST THROUGH WEDNESDAY MORNING. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THUNDERSTORMS PRODUCING HEAVY RAIN AND POTENTIAL FLASH FLOODING MAY LINGER INTO NOON WEDNESDAY. THOUGH SOME SCATTERED SHOWERS AND STORMS MAY PERSIST INTO WEDNESDAY AFTERNOON...ADDITIONAL RAINFALL AMOUNTS WILL BE SMALL. DEPENDING ON TOTAL RAINFALL AMOUNTS...LONGER TERM RIVER FLOODING WILL BE POSSIBLE THROUGH THE END OF THE WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTERS ACTIVATION MAY BE NEEDED LATE THIS AFTERNOON THROUGH WEDNESDAY MORNING. IAZ025>028-034>039-044>050-057>060-070-071-151100- ADAIR-AUDUBON-BLACK HAWK-BOONE-BREMER-BUTLER-CALHOUN-CARROLL-CASS- CRAWFORD-DALLAS-FRANKLIN-GREENE-GRUNDY-GUTHRIE-HAMILTON-HARDIN- MARSHALL-POLK-STORY-TAMA-WEBSTER-WRIGHT- 336 PM CDT TUE SEP 14 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR A PORTION OF CENTRAL IOWA ALONG AND EITHER SIDE OF A LINE FROM AUDUBON TO BOONE TO WAVERLY. .DAY ONE...TODAY AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM 4 PM UNTIL MIDNIGHT. THE MAIN THREAT FROM THESE STORMS WILL BE 70 MPH WINDS AND GOLFBALL SIZE HAIL. IN ADDITION...ISOLATED TORNADOES MAY OCCUR THROUGH 8 PM ESPECIALLY ALONG THE HIGHWAY 30 CORRIDOR WEST OF INTERSTATE 35. SOME HEAVY RAINFALL MAY OCCUR WITH THE STORMS LATE THIS EVENING AND OVERNIGHT WITH URBAN FLOODING POSSIBLE. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY SCATTERED THUNDERSTORMS WILL PERSIST WEDNESDAY...HOWEVER NO ORGANIZED SEVERE WEATHER IS EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTERS ACTIVATION MAY BE NEEDED LATE THIS AFTERNOON AND TONIGHT. IAZ061-062-072>075-081>086-092>097-151100- ADAMS-APPANOOSE-CLARKE-DAVIS-DECATUR-JASPER-LUCAS-MADISON-MAHASKA- MARION-MONROE-POWESHIEK-RINGGOLD-TAYLOR-UNION-WAPELLO-WARREN-WAYNE- 336 PM CDT TUE SEP 14 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR A PORTION OF CENTRAL IOWA SOUTH OF A LINE FROM CORYDON...THROUGH INDIANOLA...TO GRINNELL. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. A FEW THUNDERSTORMS MAY MOVE INTO THE AREA LATE THIS EVENING AND OVERNIGHT...HOWEVER NO ORGANIZED SEVERE WEATHER IS EXPECTED. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY SCATTERED THUNDERSTORMS WILL PERSIST WEDNESDAY...HOWEVER NO ORGANIZED SEVERE WEATHER IS EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT LIKELY.
In the hours before
Special weather statement, Sep 14, 2:50 PM CDT, 4 hours 26 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 250 PM CDT TUE SEP 14 2004 IAZ004>007-015>017-023>026-033>037-044>049-057>061-070>072-150150- SEVERE THUNDERSTORM WATCH #819 REMAINS IN EFFECT UNTIL 1000 PM CDT FOR THE COUNTIES OF... ADAIR AUDUBON BOONE CALHOUN CARROLL CASS CERRO GORDO CRAWFORD DALLAS EMMET FRANKLIN GREENE GUTHRIE HAMILTON HANCOCK HARDIN HUMBOLDT JASPER KOSSUTH MADISON MARSHALL PALO ALTO POCAHONTAS POLK SAC STORY WEBSTER WINNEBAGO WORTH WRIGHT
Local storm report, Sep 14, 6:10 PM CDT, 1 hour 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
610 PM CDT TUE SEP 14 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0555 PM HAIL 1 E CHARTER OAK 42.07N 95.57W
09/14/2004 0.75 INCH CRAWFORD IA LAW ENFORCEMENT
&&
STLocal storm report, Sep 14, 6:12 PM CDT, 1 hour 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
612 PM CDT TUE SEP 14 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0611 PM HAIL 3 N SCHLESWIG 42.21N 95.43W
09/14/2004 1.00 INCH CRAWFORD IA TRAINED SPOTTER
&&
STLocal storm report, Sep 14, 7:14 PM CDT, 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
714 PM CDT TUE SEP 14 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0652 PM HAIL 2 S KIRON 42.16N 95.33W
09/14/2004 0.88 INCH CRAWFORD IA LAW ENFORCEMENT
0646 PM HAIL DELOIT 42.10N 95.32W
09/14/2004 0.88 INCH CRAWFORD IA LAW ENFORCEMENT
&&
STThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 14, 7:41 PM CDT | Flash Flood Warning | DMX | Kossuth | 4 hr |
| Sep 14, 8:35 PM CDT | Flash Flood Warning | DMX | Emmet, Palo Alto | 5 hr |
| Sep 14, 9:26 PM CDT | Flash Flood Warning | DMX | Winnebago | 6 hr |
| Sep 14, 10:59 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Winnebago | 46 min |
| Sep 15, 5:43 AM CDT | Flash Flood Warning | DMX | Emmet, Palo Alto | 6 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.