Alert archive / Iowa / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 345, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Sep 18, 2010, 10:46 PM CDT for Adair County, Adams County, Cass 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 counties it named.
The facts
- Issued
- Sep 18, 2010, 10:46 PM CDT (03:46 UTC)
- Expired
- Sep 18, 2010, 11:30 PM CDT
- In force
- 44 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Hail
- 1.75 in
- Wind
- 50.0 mph
Counties Adair County, IA, Adams County, IA, Cass County, IA
The radar
The Des Moines radar (KDMX), 99 km from the middle of the area, began a volume at 03:49 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 18, 9:25 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 3.8 hours before the alert went out and 140 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
- 7 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 500 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 312 m²/s²
- 0-3 km storm-relative helicity
- 458 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.4
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 18, 6:36 PM CDT, 4 hours 10 minutes earlier.
Area forecast discussion, Sep 18, 6:36 PM CDT, 4 hours 10 minutes before
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</html>Hazardous weather outlook, Sep 18, 5:52 PM CDT, 4 hours 54 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DES MOINES IA 552 PM CDT SAT SEP 18 2010 IAZ046>050-057>062-070>075-081>086-092>097-192300- GREENE-BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-DALLAS-POLK-JASPER- POWESHIEK-CASS-ADAIR-MADISON-WARREN-MARION-MAHASKA-ADAMS-UNION- CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-RINGGOLD-DECATUR-WAYNE-APPANOOSE- DAVIS- 552 PM CDT SAT SEP 18 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND SOUTH CENTRAL IOWA. .DAY ONE...TONIGHT SCATTERED THUNDERSTORMS ARE EXPECTED TONIGHT. AN ISOLATED SEVERE STORM CAPABLE OF PRODUCING QUARTER SIZED HAIL IS POSSIBLE. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY ISOLATED THUNDERSTORM CHANCES CONTINUE ON SUNDAY THEN SCATTERED THUNDERSTORMS ARE POSSIBLE SUNDAY NIGHT. ADDITIONAL THUNDERSTORM ARE POSSIBLE INTERMITTENTLY THROUGHOUT THE WEEK. A FEW SEVERE STORMS AND LOCALLY HEAVY RAIN MAY OCCUR DURING THE PERIOD. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TONIGHT. IAZ004>007-015-192300- EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO- 552 PM CDT SAT SEP 18 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL IOWA. .DAY ONE...TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY CHANCES FOR THUNDERSTORMS RETURN SUNDAY NIGHT THEN INTERMITTENTLY THROUGHOUT THE WEEK. A FEW SEVERE STORMS AND LOCALLY HEAVY RAIN MAY OCCUR DURING THE PERIOD. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TONIGHT. IAZ016-017-023>028-033>039-044-045-192300- HANCOCK-CERRO GORDO-POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER- BREMER-SAC-CALHOUN-WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK- CRAWFORD-CARROLL- 552 PM CDT SAT SEP 18 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA. .DAY ONE...TONIGHT ISOLATED NON SEVERE THUNDERSTORMS ARE POSSIBLE TONIGHT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY ISOLATED THUNDERSTORM CHANCES CONTINUE ON SUNDAY THEN SCATTERED THUNDERSTORMS ARE POSSIBLE SUNDAY NIGHT. ADDITIONAL THUNDERSTORM ARE POSSIBLE INTERMITTENTLY THROUGHOUT THE WEEK. A FEW SEVERE STORMS AND LOCALLY HEAVY RAIN MAY OCCUR DURING THE PERIOD. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TONIGHT. DONAVON
In the hours before
Special weather statement, Sep 18, 9:21 PM CDT, 1 hour 25 minutes before
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</html>The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 18, 9:32 PM CDT | Severe Thunderstorm Warning | DMX | Taylor | 43 min |
| Sep 18, 10:14 PM CDT | Severe Thunderstorm Warning | DMX | Taylor | 46 min |
| Sep 18, 11:01 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold, Taylor | 44 min |
| Sep 18, 11:18 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Polk | 42 min |
| Sep 18, 11:30 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Cass | 45 min |
| Sep 18, 11:45 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold, Taylor | 45 min |
| Sep 19, 12:15 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Union | 45 min |
| Sep 19, 12:28 AM CDT | Severe Thunderstorm Warning | DMX | Decatur, Ringgold | 47 min |
| Sep 19, 12:40 AM CDT | Flash Flood Warning | DMX | Adams, Cass, Union | 6 hr |
| Sep 19, 1:01 AM CDT | Severe Thunderstorm Warning | DMX | Clarke, Ringgold, Union | 44 min |
| Sep 19, 1:16 AM CDT | Severe Thunderstorm Warning | DMX | Decatur | 44 min |
| Sep 19, 1:21 AM CDT | Severe Thunderstorm Warning | DMX | Cass | 39 min |
| Sep 19, 2:17 AM CDT | Flash Flood Warning | DMX | Decatur, Ringgold, Union, Wayne | 5 hr |
| Sep 19, 2:27 AM CDT | Severe Thunderstorm Warning | DMX | Adams, Taylor | 48 min |
| Sep 19, 3:15 AM CDT | Severe Thunderstorm Warning | DMX | Adams, Ringgold, Taylor | 60 min |
| Sep 19, 9:02 AM CDT | River Flood Warning | DMX | Taylor | 4 hr |
| Sep 19, 2:09 PM CDT | River Flood Warning | DMX | Appanoose, Wayne | 16 hr |
Nearby
Severe Thunderstorm Warnings in Iowa, 2010Every severe thunderstorm warning in 2010
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.