Alert archive / Wisconsin / Flash Flood Watches in 2009

Flash Flood Watch 1, NWS La Crosse, WI

April 26, 20099 counties in Wisconsin; 8 counties in Iowa; 6 counties in Minnesota

NWS La Crosse, WI issued this flash flood watch at Apr 26, 2009, 3:45 AM CDT for 9 counties in Wisconsin; 8 counties in Iowa; 6 counties in Minnesota. It took effect at Apr 26, 2009, 6:00 PM CDT. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued: Apr 26, 2009, 3:45 AM CDT (08:45 UTC)
In effect from: Apr 26, 2009, 6:00 PM CDT
Expired: Apr 27, 2009, 3:36 AM CDT
In force: 10 hr
Issued by: NWS La Crosse, WI
Flood severity: None

All 23 counties

Allamakee County, IA, Chickasaw County, IA, Clayton County, IA, Fayette County, IA, Floyd County, IA, Howard County, IA, Mitchell County, IA, Winneshiek County, IA, Fillmore County, MN, Houston County, MN, Mower County, MN, Olmsted County, MN, Wabasha County, MN, Winona County, MN, Buffalo County, WI, Crawford County, WI, Grant County, WI, Jackson County, WI, La Crosse County, WI, Monroe County, WI, Richland County, WI, Trempealeau County, WI, Vernon County, WI

The radar

The La Crosse radar (KARX), 46 km from the middle of the area, began a volume at 08:47 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 La Crosse, WI wrote its last area forecast discussion before this flash flood watch went out at Apr 26, 3:22 AM CDT, 23 minutes earlier.

Area forecast discussion, Apr 26, 3:22 AM CDT, 23 minutes before

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Hazardous weather outlook, Apr 25, 3:35 PM CDT, 12 hours 10 minutes before

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The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 26, 6:23 PM CDT	Tornado Warning	ARX	Grant	67 min
Apr 26, 4:23 PM CDT	Flash Flood Warning	ARX	Fayette	3 hr

Nearby

Flash Flood Watches in Wisconsin, 2009 Flash Flood Watches in Iowa, 2009 Flash Flood Watches in Minnesota, 2009 Every flash flood watch in 2009

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.