Alert archive / Iowa / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 177, NWS Des Moines, IA

June 18, 20104 counties in Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jun 18, 2010, 7:20 PM CDT for 4 counties in Iowa. It was in force for 40 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: Jun 18, 2010, 7:20 PM CDT (00:20 UTC)
Expired: Jun 18, 2010, 8:00 PM CDT
In force: 40 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Jasper County, IA, Mahaska County, IA, Marion County, IA, Poweshiek County, IA

The radar

The Des Moines radar (KDMX), 78 km from the middle of the area, began a volume at 00:22 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 18, 2:49 PM CDT	Tornado Watch	SPC	7 hr

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 Jun 18, 6:41 PM CDT, 39 minutes earlier.

Area forecast discussion, Jun 18, 6:41 PM CDT, 39 minutes before

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Hazardous weather outlook, Jun 18, 3:55 PM CDT, 3 hours 25 minutes before

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In the hours before

Local storm report, Jun 18, 6:27 PM CDT, 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
627 PM CDT FRI JUN 18 2010

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

0624 PM     HAIL             3 W TAMA                41.96N 92.63W
06/18/2010  E1.00 INCH       TAMA               IA   LAW ENFORCEMENT

&&

JOHNSON

Local storm report, Jun 18, 6:28 PM CDT, 52 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
628 PM CDT FRI JUN 18 2010

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

0620 PM     HAIL             1 WNW ARISPE            40.95N 94.24W
06/18/2010  E0.88 INCH       UNION              IA   TRAINED SPOTTER

&&

JB

Local storm report, Jun 18, 6:33 PM CDT, 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
633 PM CDT FRI JUN 18 2010

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

0630 PM     TSTM WND GST     5 W MARYSVILLE          41.17N 93.05W
06/18/2010  E70 MPH          MARION             IA   EMERGENCY MNGR

&&

JOHNSON

Special weather statement, Jun 18, 6:51 PM CDT, 29 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
651 PM CDT FRI JUN 18 2010

IAZ038-039-048>050-060>062-072>075-082>086-093>097-190130-
GRUNDY-BLACK HAWK-STORY-MARSHALL-TAMA-POLK-JASPER-POWESHIEK-
MADISON-WARREN-MARION-MAHASKA-UNION-CLARKE-LUCAS-MONROE-WAPELLO-
RINGGOLD-DECATUR-WAYNE-APPANOOSE-DAVIS-
INCLUDING THE CITIES OF...GRUNDY CENTER...WATERLOO...AMES...
MARSHALLTOWN...TOLEDO...DES MOINES...NEWTON...GRINNELL...
WINTERSET...INDIANOLA...KNOXVILLE...OSKALOOSA...CRESTON...
OSCEOLA...CHARITON...ALBIA...OTTUMWA...MOUNT AYR...LEON...
CORYDON...CENTERVILLE...BLOOMFIELD
651 PM CDT FRI JUN 18 2010

...STRONG TO SEVERE STORMS TO CONTINUE THROUGH MID-EVENING...

THUNDERSTORMS CAPABLE OF PRODUCING LARGE HAIL...DAMAGING
WINDS...AND EVEN ISOLATED TORNADOES WILL CONTINUE TO BE A THREAT
THROUGH AT LEAST 830 PM CDT. LOCALLY HEAVY RAIN IS EXPECTED WITH
THESE STORMS AS WELL AND MAY LEAD TO PONDING OF WATER ON ROADWAYS.
CONTINUE TO MONITOR THE NOAA RADIO FOR SEVERE WEATHER UPDATES...OR
VISIT OUR WEBSITE AT WEATHER.GOV/DESMOINES FOR FURTHER
INFORMATION.

KLP

Local storm report, Jun 18, 6:55 PM CDT, 25 minutes before

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Local storm report, Jun 18, 7:10 PM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
710 PM CDT FRI JUN 18 2010

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

0651 PM     FLASH FLOOD      1 NNE MARYSVILLE        41.20N 92.95W
06/18/2010                   MARION             IA   EMERGENCY MNGR

            WATER 1 FOOT DEEP FROM FARM FIELDS RUNNING OVER VERMONT
            DRIVE EAST OF HIGHWAY T23 NEAR MARYSVILLE.

&&

RVACHALE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 18, 7:00 PM CDT	Flash Flood Warning	DMX	Marion	6 hr
Jun 18, 7:17 PM CDT	Flash Flood Warning	DMX	Clarke, Union	4 hr
Jun 18, 7:21 PM CDT	Tornado Warning	DMX	Clarke, Decatur, Lucas, Wayne	24 min
Jun 18, 7:36 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Lucas, Monroe, Wayne	39 min
Jun 18, 7:41 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Decatur, Lucas, Wayne	49 min
Jun 18, 7:59 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Wayne	31 min
Jun 18, 8:14 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Lucas, Monroe, Wayne	16 min
Jun 18, 8:22 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Davis, Lucas, Monroe, Wapello, Wayne	53 min
Jun 18, 8:26 PM CDT	Areal Flood Advisory	DMX	Decatur, Wayne	3 hr
Jun 18, 8:36 PM CDT	Flash Flood Warning	DMX	Appanoose, Davis	6 hr
Jun 18, 8:55 PM CDT	River Flood Warning	DMX	Boone, Hamilton, Webster	19 days
Jun 18, 8:55 PM CDT	River Flood Warning	DMX	Madison, Warren	3 days
Jun 18, 9:16 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Davis, Wayne	44 min
Jun 18, 10:27 PM CDT	Areal Flood Advisory	DMX	Wayne	3 hr
Jun 18, 11:38 PM CDT	River Flood Warning	DMX	Appanoose, Wayne	17 hr
Jun 19, 4:01 AM CDT	Flash Flood Watch	DMX	Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 38 more	54 hr
Jun 19, 4:03 AM CDT	Dense Fog Advisory	DMX	Adair, Adams, Appanoose, Black Hawk, Boone, Cass and 25 more	4 hr
Jun 19, 4:08 AM CDT	River Flood Warning	DMX	Mahaska, Wapello	79 days
Jun 19, 4:08 AM CDT	River Flood Warning	DMX	Wapello	80 days
Jun 19, 8:17 AM CDT	River Flood Warning	DMX	Wright	49 hr
Jun 19, 9:14 AM CDT	River Flood Warning	DMX	Mahaska, Marion	25 hr

Nearby

Severe Thunderstorm Warnings in Iowa, 2010 Every severe thunderstorm warning in 2010

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.