Alert archive / Iowa / Flash Flood Watches in 2010

Flash Flood Watch 7, NWS Des Moines, IA

May 12, 201021 counties in Iowa

NWS Des Moines, IA issued this flash flood watch at May 12, 2010, 4:04 AM CDT for 21 counties in Iowa. It took effect at May 12, 2010, 7:00 PM CDT. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued: May 12, 2010, 4:04 AM CDT (09:04 UTC)
In effect from: May 12, 2010, 7:00 PM CDT
Expired: May 13, 2010, 5:52 AM CDT
In force: 11 hr
Issued by: NWS Des Moines, IA
Flood severity: None

All 21 counties

Appanoose County, IA, Clarke County, IA, Davis County, IA, Decatur County, IA, Jasper County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Monroe County, IA, Polk County, IA, Poweshiek County, IA, Ringgold County, IA, Story County, IA, Tama County, IA, Taylor County, IA, Union County, IA, Wapello County, IA, Warren County, IA, Wayne County, IA

The radar

The Des Moines radar (KDMX), 64 km from the middle of the area, began a volume at 09:09 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 forecasters said that day

The local office's own words before this flash flood watch 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 flash flood watch went out at May 12, 3:54 AM CDT, 10 minutes earlier.

Area forecast discussion, May 12, 3:54 AM CDT, 10 minutes before

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Hazardous weather outlook, May 11, 3:31 PM CDT, 12 hours 33 minutes before

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      <div class="status" id="status">Temporary Notice</div>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 12, 11:11 AM CDT	River Flood Warning	DMX	Mahaska, Marion	50 hr
May 12, 11:11 AM CDT	River Flood Warning	DMX	Decatur	34 hr
May 12, 11:11 AM CDT	River Flood Warning	DMX	Appanoose, Wayne	42 hr
May 12, 1:38 PM CDT	Severe Thunderstorm Warning	DMX	Audubon, Guthrie	37 min
May 12, 2:05 PM CDT	Severe Thunderstorm Warning	DMX	Franklin, Hamilton, Hardin, Wright	40 min
May 12, 2:40 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Greene, Guthrie	50 min
May 12, 2:48 PM CDT	Areal Flood Advisory	DMX	Audubon, Greene, Guthrie	3 hr
May 12, 3:35 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Hamilton	40 min
May 12, 4:14 PM CDT	Areal Flood Advisory	DMX	Boone, Hamilton, Hardin, Webster	3 hr
May 12, 4:16 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Dallas, Madison	44 min
May 12, 4:54 PM CDT	River Flood Warning	DMX	Madison, Warren	62 hr
May 12, 5:09 PM CDT	Areal Flood Advisory	DMX	Black Hawk, Bremer, Butler, Grundy	3 hr
May 12, 6:03 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Polk	28 min
May 12, 6:51 PM CDT	Severe Thunderstorm Warning	DMX	Grundy, Marshall, Tama	24 min

Nearby

Flash Flood Watches in Iowa, 2010 Every flash flood watch 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; radar from the NEXRAD Level II archive.