Alert archive / Iowa / Tornado Warnings in 2007
Tornado Warning 1, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at Mar 24, 2007, 6:46 PM CDT for Butler County, Iowa. It was in force for 29 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
- Mar 24, 2007, 6:46 PM CDT (23:46 UTC)
- Expired
- Mar 24, 2007, 7:15 PM CDT
- In force
- 29 min
- Issued by
- NWS Des Moines, IA
- Area
- Counties, with a storm outline in the text
County Butler County, IA
The radar
The Des Moines radar (KDMX), 141 km from the middle of the area, began a volume at 23:49 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.
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 11.8 hours before the alert went out and 234 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
- 120 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 566 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KDMX 242346 TORDMX IAC023-250015- /O.NEW.KDMX.TO.W.0001.070324T2346Z-070325T0015Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DES MOINES IA 646 PM CDT SAT MAR 24 2007 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A * TORNADO WARNING FOR... NORTHERN BUTLER COUNTY IN NORTH CENTRAL IOWA... * UNTIL 715 PM CDT * AT 641 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. LARGE HAIL IS ALSO POSSIBLE WITH THIS STORM. THIS DANGEROUS STORM WAS LOCATED 8 MILES WEST OF ALLISON...OR 25 MILES SOUTHWEST OF CHARLES CITY...AND MOVING EAST AT 30 MPH. * THIS STORM WILL BE NEAR... ALLISON BY 655 PM CDT... CLARKSVILLE BY 705 PM CDT... THE TOWNS OF BRISTOW AND DUMONT ARE ALSO IN THE PATH OF THIS TORNADIC STORM. THIS IS A HAZARDOUS SITUATION. SEEK SHELTER IN A BASEMENT...OR IN AN INTERIOR ROOM. STAY AWAY FROM WINDOWS. IF YOU ARE OUTSIDE OR IN A CAR...SEEK SHELTER IN A REINFORCED BUILDING. LAT...LON 4286 9301 4274 9301 4272 9256 4291 9256 $$ MOYER
2 follow-up statements
000 WWUS53 KDMX 250003 SVSDMX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 702 PM CDT SAT MAR 24 2007 IAC023-250015- /O.CON.KDMX.TO.W.0001.000000T0000Z-070325T0015Z/ BUTLER IA- 702 PM CDT SAT MAR 24 2007 ...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN BUTLER COUNTY UNTIL 715 PM CDT... AT 658 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS TORNADO WAS LOCATED NEAR ALLISON...OR 21 MILES SOUTH OF CHARLES CITY...MOVING EAST AT 25 MPH. THE TORNADO WILL BE NEAR... CLARKSVILLE BY 710 PM CDT... THE TOWN OF BRISTOW IS ALSO IN THE PATH OF THIS TORNADO. SEEK SHELTER IN A BASEMENT...OR IN AN INTERIOR ROOM. STAY AWAY FROM WINDOWS. IF YOU ARE IN A CAR OR OUTSIDE...SEEK SHELTER IN A REINFORCED BUILDING. IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING NICKEL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS OF 60 MPH. LAT...LON 4286 9301 4274 9301 4272 9256 4291 9256 $$ MOYER
000 WWUS53 KDMX 250017 SVSDMX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 717 PM CDT SAT MAR 24 2007 IAC023-250027- /O.EXP.KDMX.TO.W.0001.000000T0000Z-070325T0015Z/ BUTLER IA- 717 PM CDT SAT MAR 24 2007 ...THE TORNADO WARNING FOR NORTHERN BUTLER COUNTY HAS BEEN ALLOWED TO EXPIRE... AT 715 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE THUNDERSTORM WHICH PROMPTED THE WARNING HAS WEAKENED...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. THEREFORE...THE TORNADO WARNING WILL BE ALLOWED TO EXPIRE. LAT...LON 4286 9301 4274 9301 4272 9256 4291 9256 $$ MOYER
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 23, 10:06 PM CDT | Dense Fog Advisory | DMX | Black Hawk, Bremer, Butler, Cerro Gordo, Franklin, Grundy and 12 more | 12 hr |
| Mar 24, 5:28 AM CDT | Severe Thunderstorm Warning | DMX | Crawford | 47 min |
| Mar 24, 6:42 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Greene | 33 min |
Nearby
Tornado Warnings in Iowa, 2007Every tornado warning in 2007Tornadoes in 2007
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.