Alert archive / Iowa / River Flood Warnings in 2023

River Flood Warning 1, NWS Des Moines, IA

February 27, 2023Black Hawk County, Iowa

NWS Des Moines, IA issued this river flood warning at Feb 27, 2023, 10:53 AM CST for Black Hawk County, Iowa. It took effect at Feb 28, 2023, 10:00 AM CST. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued: Feb 27, 2023, 10:53 AM CST (16:53 UTC)
In effect from: Feb 28, 2023, 10:00 AM CST
Expired: Feb 28, 2023, 7:31 PM CST
In force: 10 hr
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Flood severity: Minor

County Black Hawk County, IA

The radar

The Des Moines radar (KDMX), 143 km from the middle of the area, began a volume at 16:55 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 river

Written for the forecast point Black Hawk Creek at Hudson (HUDI4).

Action stage: 14 ft
Minor stage: 15 ft
Moderate stage: 16 ft
Major stage: 19 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05463500, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood 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 river flood warning went out at Feb 27, 5:55 AM CST, 4 hours 58 minutes earlier.

Area forecast discussion, Feb 27, 5:55 AM CST, 4 hours 58 minutes before

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Hazardous weather outlook, Feb 27, 3:20 AM CST, 7 hours 33 minutes before

Hazardous Weather Outlook
National Weather Service Des Moines IA
320 AM CST Mon Feb 27 2023

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-
081>086-092>097-280930-
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-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-
320 AM CST Mon Feb 27 2023

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...Today and tonight

Isolated thunderstorms will occur early this morning, mainly over
the southern and eastern half of Iowa. The probability of severe
weather is low. Unseasonably high rainfall accumulations will lead
to ponding water and modest rises on area streams and rivers
early this week.

Strong northwest winds will develop during the day today, with
gusts to 30 to 40 mph expected by the afternoon.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

Lee

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 27, 3:17 PM CST	River Flood Warning	DMX	Cerro Gordo, Floyd, Worth	16 hr

Nearby

River Flood Warnings in Iowa, 2023 Every river flood warning in 2023

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; the gauge from the NWS water service and the USGS.