Alert archive / Iowa / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 212, NWS Des Moines, IA

August 11, 2013Hamilton County, Webster County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Aug 11, 2013, 8:33 PM CDT for Hamilton County, Webster County, Iowa. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 11, 2013, 8:33 PM CDT (01:33 UTC)
Expired
Aug 11, 2013, 9:15 PM CDT
In force
42 min
Issued by
NWS Des Moines, IA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Hamilton County, IA, Webster County, IA

The radar

The Des Moines radar (KDMX), 77 km from the middle of the area, began a volume at 01:36 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 severe thunderstorm 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 severe thunderstorm warning went out at Aug 11, 6:35 PM CDT, 1 hour 58 minutes earlier.

Area forecast discussion, Aug 11, 6:35 PM CDT, 1 hour 58 minutes before
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Hazardous weather outlook, Aug 11, 4:36 AM CDT, 15 hours 57 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
436 AM CDT SUN AUG 11 2013

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-081>086-
092>097-121100-
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-
436 AM CDT SUN AUG 11 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MUCH OF CENTRAL IOWA.

.DAY ONE...TODAY AND TONIGHT

SCATTERED THUNDERSTORMS ARE POSSIBLE TODAY AND TONIGHT. A FEW OF
THE STORMS MAY BE STRONG TO SEVERE OVER CENTRAL AND NORTHERN IOWA LATE
THIS AFTERNOON AND THIS EVENING. LARGE HAIL AND DAMAGING WINDS
WOULD BE THE PRIMARY THREATS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

THERE WILL BE MINIMAL CHANCES FOR THUNDERSTORMS NORTH AND WEST
THURSDAY NIGHT OR FRIDAY. SEVERE WEATHER IS NOT ANTICIPATED AT
THIS TIME.

.SPOTTER INFORMATION STATEMENT...

A PERIOD OF SPOTTER ACTIVATION MAY BE NEEDED OVER CENTRAL AND
NORTHERN IOWA LATE THIS AFTERNOON AND THIS EVENING.

SMALL

In the hours before

Local storm report, Aug 11, 4:27 PM CDT, 4 hours 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
427 PM CDT SUN AUG 11 2013

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

0424 PM     FUNNEL CLOUD     1 N LU VERNE            42.93N 94.08W
08/11/2013                   KOSSUTH            IA   FIRE DEPT/RESCUE

            BRIEF NARROW FUNNEL CAME DOWN AND THEN QUICKLY RETREATED
            BACK INTO THE CLOUDS.

&&

SKOW
Special weather statement, Aug 11, 4:44 PM CDT, 3 hours 49 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
444 PM CDT SUN AUG 11 2013

IAZ016-017-023>027-033>037-112345-
HANCOCK-CERRO GORDO-POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-
SAC-CALHOUN-WEBSTER-HAMILTON-HARDIN-
INCLUDING THE CITIES OF...GARNER...MASON CITY...POCAHONTAS...
HUMBOLDT...CLARION...HAMPTON...ALLISON...SAC CITY...
ROCKWELL CITY...FORT DODGE...WEBSTER CITY...ELDORA
444 PM CDT SUN AUG 11 2013

...THUNDERSTORMS WILL CONTINUE ALONG THE HIGHWAY 3 CORRIDOR ACROSS
NORTH CENTRAL IOWA...

SCATTERED THUNDERSTORMS WILL MOVE EAST ALONG THE HIGHWAY 3
CORRIDOR FROM POCAHONTAS EAST TO HAMPTON AND ALLISON THROUGH 545 PM.
A FEW OF THESE STORMS MAY REACH SEVERE LIMITS WITH LARGE HAIL AND
LOCALLY DAMAGING WINDS. AN ISOLATED TORNADO IS ALSO POSSIBLE.

BE PREPARED TO MOVE TO SAFE SHELTER IF A WARNING IS ISSUED OR
SEVERE WEATHER IS OBSERVED.
Local storm report, Aug 11, 5:34 PM CDT, 2 hours 59 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
534 PM CDT SUN AUG 11 2013

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

0526 PM     TSTM WND GST     2 W HAMPTON             42.74N 93.24W
08/11/2013  E65 MPH          FRANKLIN           IA   EMERGENCY MNGR

            EMERGENCY MANAGER ESTIMATES 60 TO 70 MPH WINDS. HE HAD TO
            PULL OVER AND HAD A HARD TIME KEEPING HIS TRUCK ON THE
            SHOULDER DURING THE WINDS. NO DAMAGE OBSERVED AT THIS
            TIME.

&&

SKOW
Local storm report, Aug 11, 6:33 PM CDT, 2 hours before
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Nearby

Severe Thunderstorm Warnings in Iowa, 2013Every severe thunderstorm 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; radar from the NEXRAD Level II archive.