Alert archive / Iowa / Areal Flood Warnings in 2013

Areal Flood Warning 2, NWS Des Moines, IA

April 18, 20138 counties in Iowa

NWS Des Moines, IA issued this areal flood warning at Apr 18, 2013, 1:59 AM CDT for 8 counties in Iowa. It was in force for 24 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 18, 2013, 1:59 AM CDT (06:59 UTC)
Expired: Apr 19, 2013, 2:00 AM CDT
In force: 24 hr
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Flood severity: None

Counties Appanoose County, IA, Davis County, IA, Lucas County, IA, Mahaska County, IA, Marion County, IA, Monroe County, IA, Wapello County, IA, Wayne County, IA

The radar

The Des Moines radar (KDMX), 108 km from the middle of the area, began a volume at 07:00 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 nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 7.0 hours before the alert went out and 295 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 475 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 501 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal 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 areal flood warning went out at Apr 18, 12:06 AM CDT, 1 hour 53 minutes earlier.

Area forecast discussion, Apr 18, 12:06 AM CDT, 1 hour 53 minutes before

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Hazardous weather outlook, Apr 17, 10:49 PM CDT, 3 hours 10 minutes before

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In the hours before

Local storm report, Apr 17, 9:00 PM CDT, 4 hours 59 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
900 PM CDT WED APR 17 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0600 PM     FLASH FLOOD      5 NNW BLAKESBURG        41.03N 92.69W
04/17/2013                   MONROE             IA   PUBLIC

            WATER FROM CREEK COVERING SEVERAL MILES OF OLD HIGHWAY
            34.

0840 PM     SLEET            ESTHERVILLE             43.40N 94.83W
04/17/2013  E0.10 INCH       EMMET              IA   LAW ENFORCEMENT

            STILL SOME SLEET ON GRASSY AREAS. FELL SHORTLY AFTER 7PM.

&&

SKOW

Local storm report, Apr 17, 9:22 PM CDT, 4 hours 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
922 PM CDT WED APR 17 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0915 PM     FLASH FLOOD      OTTUMWA                 41.02N 92.42W
04/17/2013                   WAPELLO            IA   LAW ENFORCEMENT

            OTTUMWA POLICE REPORTS SEVERAL ROADS AND INTERSECTIONS IN
            THE CITY ARE IMPASSABLE TO CARS.

&&

SKOW

Local storm report, Apr 17, 9:25 PM CDT, 4 hours 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
925 PM CDT WED APR 17 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0900 PM     HEAVY RAIN       MADRID                  41.88N 93.82W
04/17/2013  M1.94 INCH       BOONE              IA   TRAINED SPOTTER

            STORM TOTAL FROM MADRIDIOWAWX

&&

DONAVON

Local storm report, Apr 17, 9:58 PM CDT, 4 hours 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
958 PM CDT WED APR 17 2013

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0800 PM     HEAVY RAIN       BEDFORD                 40.67N 94.72W
04/17/2013  M4.50 INCH       TAYLOR             IA   TRAINED SPOTTER

            STORM TOTAL AS OF 8PM.

&&

SKOW

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 17, 7:28 PM CDT	Winter Weather Advisory	DMX	Emmet	33 hr
Apr 17, 8:08 PM CDT	River Flood Warning	DMX	Mahaska, Marion	52 hr
Apr 17, 8:09 PM CDT	Flash Flood Warning	DMX	Appanoose, Davis, Lucas, Monroe, Wapello, Wayne	6 hr
Apr 17, 10:48 PM CDT	Flash Flood Warning	DMX	Taylor	6 hr
Apr 18, 12:32 AM CDT	Areal Flood Warning	DMX	Decatur, Ringgold	3 hr
Apr 18, 3:03 AM CDT	Areal Flood Warning	DMX	Clarke, Decatur, Lucas, Mahaska, Marion, Warren	24 hr
Apr 18, 8:03 AM CDT	River Flood Warning	DMX	Madison, Warren	35 hr

Nearby

Areal Flood Warnings in Iowa, 2013 Every areal flood warning in 2013

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.