Alert archive / Iowa / River Flood Watches in 2018

River Flood Watch 2, NWS Des Moines, IA

April 18, 2018Humboldt County, Iowa

NWS Des Moines, IA issued this river flood watch at Apr 18, 2018, 10:53 AM CDT for Humboldt County, Iowa. It took effect at Apr 24, 2018, 1:00 PM CDT. It was in force for .

The area

The counties it named.

The facts

Issued
Apr 18, 2018, 10:53 AM CDT (15:53 UTC)
In effect from
Apr 24, 2018, 1:00 PM CDT
Expired
Apr 20, 2018, 10:56 AM CDT
In force
Issued by
NWS Des Moines, IA
Area
Storm-based polygon
Flood severity
None

County Humboldt County, IA

The radar

The Des Moines radar (KDMX), 123 km from the middle of the area, began a volume at 15:55 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 West Fork Des Moines River at Humboldt (HBTI4). The gauge peaked at 9.26 ft at Apr 18, 2018, 5:00 PM CDT.

actionminormoderatemajor6810121404/1804/1904/2004/21
Action stage
7 ft
Minor stage
10 ft
Moderate stage
13 ft
Major stage
14 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05476750, 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 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 river flood watch went out at Apr 18, 6:33 AM CDT, 4 hours 20 minutes earlier.

Area forecast discussion, Apr 18, 6:33 AM CDT, 4 hours 20 minutes before
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Hazardous weather outlook, Apr 18, 4:15 AM CDT, 6 hours 38 minutes before
Hazardous Weather Outlook
National Weather Service Des Moines IA
415 AM CDT Wed Apr 18 2018

IAZ004>007-015>017-023>028-033>039-190915-
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Grundy-Black Hawk-
415 AM CDT Wed Apr 18 2018

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...Today and tonight

A Winter Storm Warning is in effect for the area. Please refer to
the National Weather Service website at weather.gov/desmoines for
further details. Scattered non severe thunderstorms will occur
today as well.

River flood warnings remain in effect for portions of the upper
Des Moines River Basin and Cedar River Basin. With additional snow
forecast today and melting later this week, additional rivers
within these basins are likely to swell and possibly flood by the
weekend.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

River flood warnings remain in effect for portions of the upper
Des Moines River Basin and Cedar River Basin.

.SPOTTER INFORMATION STATEMENT...

Spotters activation is not needed at this time. Snowfall, hail and
ice reports would be appreciated.

IAZ044>050-057>062-190915-
Crawford-Carroll-Greene-Boone-Story-Marshall-Tama-Audubon-Guthrie-
Dallas-Polk-Jasper-Poweshiek-
415 AM CDT Wed Apr 18 2018

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...Today and tonight

A Winter Weather Advisory is in effect for the area. Please refer
to the National Weather Service website at weather.gov/desmoines
for further details. Scattered non severe thunderstorms will
occur today as well.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

With snow melting later this week and into the weekend, rivers
basins in portions of central and northern Iowa are likely to
swell and possibly flood by the weekend.

.SPOTTER INFORMATION STATEMENT...

Spotters activation is not needed at this time. Snowfall, hail
and ice reports would be appreciated.

IAZ070>075-081>086-092>097-190915-
Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-Union-Clarke-Lucas-
Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne-Appanoose-Davis-
415 AM CDT Wed Apr 18 2018

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...Today and tonight

An isolated non severe thunderstorm is possible this morning.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

No hazardous weather is expected in this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated at this time.

REV

In the hours before

Local storm report, Apr 18, 10:28 AM CDT, 25 minutes before
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Local storm report, Apr 18, 10:33 AM CDT, 20 minutes before
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Local storm report, Apr 18, 10:35 AM CDT, 18 minutes before
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Local storm report, Apr 18, 10:36 AM CDT, 17 minutes before
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Local storm report, Apr 18, 10:44 AM CDT, 9 minutes before
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Local storm report, Apr 18, 10:45 AM CDT, 8 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 18, 5:43 AM CDTSevere Thunderstorm WarningDMXButler, Franklin47 min

Nearby

River Flood Watches in Iowa, 2018Every river flood watch in 2018

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.