Alert archive / Iowa / River Flood Warnings in 2024

River Flood Warning 6, NWS Des Moines, IA

May 8, 2024Cerro Gordo County, Floyd County, Worth County, Iowa

NWS Des Moines, IA issued this river flood warning at May 8, 2024, 9:24 PM CDT for Cerro Gordo County, Floyd County, Worth County, Iowa. It took effect at May 9, 2024, 4:00 PM CDT. It was in force for .

The area

The counties it named.

The facts

Issued: May 8, 2024, 9:24 PM CDT (02:24 UTC)
In effect from: May 9, 2024, 4:00 PM CDT
Expired: May 9, 2024, 10:29 AM CDT
In force
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Flood severity: Minor

Counties Cerro Gordo County, IA, Floyd County, IA, Worth County, IA

The radar

The Des Moines radar (KDMX), 168 km from the middle of the area, began a volume at 02:26 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 Winnebago River at Mason City (MCWI4).

Action stage: 8 ft
Minor stage: 10 ft
Moderate stage: 14.5 ft
Major stage: 15.5 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05459500, 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 May 8, 6:41 PM CDT, 2 hours 43 minutes earlier.

Area forecast discussion, May 8, 6:41 PM CDT, 2 hours 43 minutes before

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Hazardous weather outlook, May 8, 3:37 PM CDT, 5 hours 47 minutes before

Hazardous Weather Outlook
National Weather Service Des Moines IA
337 PM CDT Wed May 8 2024

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-
081>086-092>097-091100-
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-
337 PM CDT Wed May 8 2024

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...This afternoon and tonight

Scattered thunderstorms are forecast into tonight, mainly over the
northern half of Iowa. A few storms could produce large hail,
damaging winds, or a brief tornado. There will also be a renewed
chance for locally heavy rainfall, especially north, where
isolated amounts may reach two inches or more.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Some thunderstorm chances remain in the forecast Thursday, and
will return again early next week, but the severe weather
potential is low at this time.

.SPOTTER INFORMATION STATEMENT...

Spotters may be needed at times through tonight.

Small

In the hours before

Special weather statement, May 8, 5:41 PM CDT, 3 hours 43 minutes before

Special Weather Statement
National Weather Service Des Moines IA
541 PM CDT Wed May 8 2024

IAZ046-047-058-059-082330-
Boone IA-Guthrie IA-Greene IA-Dallas IA-
541 PM CDT Wed May 8 2024

...A STRONG THUNDERSTORM WILL IMPACT SOUTHEASTERN GREENE...
NORTHEASTERN GUTHRIE...SOUTHWESTERN BOONE AND NORTHWESTERN DALLAS
COUNTIES THROUGH 630 PM CDT...

At 540 PM CDT, Doppler radar was tracking a strong thunderstorm 9
miles west of Perry, moving northeast at 20 mph.

HAZARD...Wind gusts up to 50 mph and pea size hail, along with
         rainfall up to one inch.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible. Ponding of water on roadways, low visibilities,
         and rises in small streams and creeks.

Locations impacted include...
Perry, Jefferson, Ogden, Lake Panorama, Grand Junction, Bayard,
Bagley, Rippey, Yale, Jamaica, Dawson, Dana, Beaver, Berkley, Perry
Municipal Airport, Lakin Slough Game Management Area, Jefferson
Municipal Airport, and Springbrook State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4171 9438 4186 9456 4218 9415 4195 9390
TIME...MOT...LOC 2240Z 228DEG 18KT 4186 9428

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH

Bury

Local storm report, May 8, 6:17 PM CDT, 3 hours 7 minutes before

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Local storm report, May 8, 6:23 PM CDT, 3 hours 1 minute before

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Local storm report, May 8, 6:59 PM CDT, 2 hours 25 minutes before

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Local storm report, May 8, 7:02 PM CDT, 2 hours 22 minutes before

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Local storm report, May 8, 8:29 PM CDT, 55 minutes before

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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 8, 7:10 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Dallas, Polk, Story	50 min
May 8, 7:36 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Hamilton, Hardin, Story	54 min
May 8, 7:59 PM CDT	Severe Thunderstorm Warning	DMX	Grundy, Hardin, Marshall, Story	46 min
May 8, 8:53 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Grundy, Marshall, Tama	52 min
May 8, 9:20 PM CDT	Severe Thunderstorm Warning	DMX	Audubon, Calhoun, Carroll, Greene, Guthrie	40 min
May 8, 9:32 PM CDT	River Flood Watch	DMX	Black Hawk	14 hr
May 8, 9:32 PM CDT	River Flood Watch	DMX	Black Hawk, Bremer, Butler	13 hr
May 8, 9:32 PM CDT	River Flood Watch	DMX	Black Hawk	13 hr
May 8, 9:39 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Tama	51 min
May 8, 10:52 PM CDT	Special Weather Statement	DMX	Boone	23 min
May 8, 11:08 PM CDT	Special Weather Statement	DMX	Story	22 min
May 9, 11:00 AM CDT	River Flood Watch	DMX	Boone, Hamilton, Webster	10 hr
May 9, 11:24 AM CDT	River Flood Warning	DMX	Black Hawk	21 hr

Nearby

River Flood Warnings in Iowa, 2024 Every river flood warning in 2024

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.