Alert archive / Iowa / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 163, NWS Des Moines, IA

June 24, 20134 counties in Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jun 24, 2013, 12:12 PM CDT for 4 counties in Iowa. It was in force for 48 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 24, 2013, 12:12 PM CDT (17:12 UTC)
Expired: Jun 24, 2013, 1:00 PM CDT
In force: 48 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Hamilton County, IA, Hardin County, IA, Webster County, IA, Wright County, IA

The radar

The Des Moines radar (KDMX), 84 km from the middle of the area, began a volume at 17:15 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 Jun 24, 6:10 AM CDT, 6 hours 2 minutes earlier.

Area forecast discussion, Jun 24, 6:10 AM CDT, 6 hours 2 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DES MOINES IA
610 AM CDT MON JUN 24 2013

.SHORT TERM.../TODAY /...
ISSUED AT 332 AM CDT MON JUN 24 2013

ONGOING CONVECTION WILL CONTINUE ACROSS THE I-80 CORRIDOR AND
NORTH THIS MORNING. WARM CLOUD DEPTHS ARE AROUND 15KFT SO LARGE
HAIL NOT MUCH OF A THREAT. WE COULD NOT GET MORE THAN HALF INCH
HAIL FROM STORMS ALL NIGHT BUT RAINFALL RATES OF 2 TO 3 INCHES AN
HOUR WERE COMMON. WE ARE IN FOR SEVERAL ROUNDS OF STORMS TODAY.
CURRENT CONVECTION IS A RESULT MODERATE INSTABILITY AS A SHORTWAVE
LIFTS ACROSS THE AREA. CURRENT CONVECTION WILL LIKELY WEAKEN OR
DISSIPATE BY LATE MORNING BUT ANOTHER AREA OF STORMS OVER EASTERN
NEBRASKA IS MOVING EAST AND OTHER STORMS AHEAD OF THIS LINE ARE
STARTING TO DEVELOP AND SHOULD MOVE ACROSS THE I-80 CORRIDOR. I
HAVE ISSUED A FLASH FLOOD WATCH FOR THE I80 TO HIGHWAY 20 CORRIDOR
THROUGH 4 PM FOR THIS CONVECTION. IN ADDITION...ADDITIONAL
SHORTWAVES WILL MOVE ACROSS THE AREA TODAY WITH THE FRONTAL
BOUNDARY OVER THE AREA EXPECTED TO RETREAT BACK NORTH AS A WARM
FRONT. SHEAR IS SUFFICIENT FOR STRONG/SEVERE STORMS FROM EARLY
AFTERNOON AND BEYOND. THIS AFTERNOON SHOULD SEE ACTIVE WEATHER
WITH POTENTIAL FOR SEVERE AND HEAVY RAIN. AS THE FRONT SHIFTS
NORTH LATER THIS AFTERNOON...THE THREAT FOR HEAVY RAIN WILL FOLLOW
SO A FLASH FLOOD WATCH IS ALSO POSTED NORTH OF HIGHWAY 20 FOR
LATER AFTERNOON AND TONIGHT.

.LONG TERM.../TONIGHT THROUGH SUNDAY/...
ISSUED AT 332 AM CDT MON JUN 24 2013

MORE OF THE SAME FOR TONIGHT THROUGH TUESDAY AS WE WILL CONTINUE
TO CONTEND WITH A QUASI STATIONARY FRONTAL BOUNDARY...A LOW LEVEL
JET AND SEVERAL SHORTWAVES TO CROSS THE STATE. STORMS WILL LIKELY
BE ONGOING FROM THE AFTERNOON AND LIKELY RE-INTENSIFY BY MID
EVENING ACROSS THE NORTH. IT WILL LIKELY START OUT WITH SOME
SEVERE POTENTIAL THEN TRANSITION INTO ANOTHER HEAVY RAIN EVENT.

BEYOND TUESDAY THERE HAS NOT BEEN MUCH CHANGE TO THE GOING
FORECAST. UPPER LEVEL RIDGING WILL DEVELOP OVER THE ROCKIES
PLACING IOWA IN NORTHWEST FLOW WITH A COUPLE OF SHORT WAVES
PUSHING ACROSS THE FORECAST AREA. ONE SUCH WAVE WILL PUSH ACROSS
NORTHERN/EASTERN IOWA WEDNESDAY THEN AGAIN THURSDAY NIGHT. BEYOND
THAT CONFIDENCE IS TOO LOW TO INCLUDE ANY KIND OF POP. COOLER
TEMPS IN STORE FOR THE WEEKEND AS A RESULT OF THE NORTHWEST FLOW.

&&

.AVIATION...24/12Z
ISSUED AT 610 AM CDT MON JUN 24 2013

THUNDERSTORMS ALONG THE I-80 CORRIDOR WILL LIFT TO THE HIGHWAY 20
CORRIDOR THROUGH 21Z.  KDSM AND KALO WILL BE THE MAIN TAF LOCATIONS
AFFECTED.  STORMS WILL PRODUCE HEAVY RAINFALL AND GUSTY WIND.  MVFR
CONDITIONS POSSIBLE IN STORMS.  THE THUNDERSTORM THREAT WILL SHIFT
NORTH LATE AFTERNOON THROUGH THE REMAINDER OF THE FORECAST PERIOD
AFFECTING KFOD...KMCW AND KALO.  MVFR CONDITIONS POSSIBLE IN STORMS
WITH THE SAME THREATS TO AVIATION EXPECTED.  SFC FLOW WILL BE S TO
SE FROM 10-20KTS AND STRONGER IN STORMS.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH THROUGH THIS AFTERNOON FOR ADAIR-AUDUBON-BOONE-
CARROLL-CASS-CRAWFORD-DALLAS-GREENE-GUTHRIE-JASPER-MADISON-
MARSHALL-POLK-POWESHIEK-STORY-TAMA.

FLASH FLOOD WATCH FROM THIS AFTERNOON THROUGH TUESDAY MORNING
FOR BREMER-BUTLER-CALHOUN-CERRO GORDO-EMMET-FRANKLIN-HAMILTON-
HANCOCK-HUMBOLDT-KOSSUTH-PALO ALTO-POCAHONTAS-SAC-WEBSTER-
WINNEBAGO-WORTH-WRIGHT.

FLASH FLOOD WATCH THROUGH TUESDAY MORNING FOR BLACK HAWK-GRUNDY-
HARDIN.

&&

SHORT TERM...FAB
LONG TERM...FAB
AVIATION...FAB

Hazardous weather outlook, Jun 24, 10:48 AM CDT, 1 hour 24 minutes before

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In the hours before

Local storm report, Jun 24, 11:56 AM CDT, 16 minutes before

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Local storm report, Jun 24, 11:57 AM CDT, 15 minutes before

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Local storm report, Jun 24, 12:07 PM CDT, 5 minutes before

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Local storm report, Jun 24, 12:10 PM CDT, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1210 PM CDT MON JUN 24 2013

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

1130 AM     TSTM WND DMG     BAYARD                  41.85N 94.56W
06/24/2013                   GUTHRIE            IA   EMERGENCY MNGR

            POWERLINES BLOWN DOWN IN THUNDERSTORM WINDS. ALSO 10 INCH
            DIAMETER TREE LIMBS BLOWN DOWN TO GROUND AND ON
            POWERLINES.

&&

SEARCY

Local storm report, Jun 24, 12:11 PM CDT, 1 minute before

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Local storm report, Jun 24, 12:12 PM CDT, 0 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
Jun 23, 8:47 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Wayne	43 min
Jun 24, 2:01 AM CDT	Flash Flood Warning	DMX	Audubon, Cass, Guthrie	6 hr
Jun 24, 3:41 AM CDT	Flash Flood Watch	DMX	Adair, Audubon, Black Hawk, Boone, Bremer, Butler and 33 more	51 hr
Jun 24, 9:15 AM CDT	Areal Flood Warning	DMX	Adair, Guthrie	24 hr
Jun 24, 10:12 AM CDT	River Flood Warning	DMX	Black Hawk	7 days
Jun 24, 10:12 AM CDT	River Flood Warning	DMX	Emmet	40 hr
Jun 24, 10:23 AM CDT	Severe Thunderstorm Warning	DMX	Audubon, Cass	52 min
Jun 24, 10:52 AM CDT	Severe Thunderstorm Warning	DMX	Audubon, Carroll, Crawford	38 min
Jun 24, 10:54 AM CDT	Severe Thunderstorm Warning	DMX	Adair, Audubon, Cass, Dallas, Greene, Guthrie	51 min
Jun 24, 11:03 AM CDT	Flash Flood Warning	DMX	Butler, Franklin, Grundy, Hardin	6 hr
Jun 24, 11:16 AM CDT	Severe Thunderstorm Warning	DMX	Audubon	44 min
Jun 24, 11:18 AM CDT	Severe Thunderstorm Warning	DMX	Butler, Grundy	27 min
Jun 24, 11:20 AM CDT	Severe Thunderstorm Warning	DMX	Adair, Boone, Dallas, Greene, Madison	40 min
Jun 24, 11:42 AM CDT	Severe Thunderstorm Warning	DMX	Boone, Calhoun, Carroll, Dallas, Greene, Guthrie and 1 more	48 min
Jun 24, 11:57 AM CDT	Severe Thunderstorm Warning	DMX	Boone, Hamilton, Hardin, Polk, Story	48 min
Jun 24, 12:01 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Dallas	29 min
Jun 24, 12:27 PM CDT	Flash Flood Warning	DMX	Grundy, Hardin	6 hr
Jun 24, 12:39 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marshall, Poweshiek, Tama	51 min
Jun 24, 12:45 PM CDT	Severe Thunderstorm Warning	DMX	Franklin, Grundy, Hamilton, Hardin, Marshall, Story and 1 more	30 min
Jun 24, 12:49 PM CDT	Flash Flood Warning	DMX	Mahaska, Marion, Poweshiek	6 hr
Jun 24, 12:54 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska	36 min
Jun 24, 1:00 PM CDT	Tornado Warning	DMX	Mahaska, Poweshiek	30 min
Jun 24, 1:03 PM CDT	Flash Flood Warning	DMX	Franklin, Hamilton, Wright	6 hr
Jun 24, 1:17 PM CDT	Flash Flood Warning	DMX	Jasper, Marshall, Poweshiek, Tama	6 hr
Jun 24, 1:38 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Monroe, Wapello	37 min
Jun 24, 3:15 PM CDT	Flash Flood Watch	DMX	Black Hawk, Grundy, Hardin	39 hr
Jun 24, 4:09 PM CDT	River Flood Warning	DMX	Black Hawk, Butler	3 days
Jun 24, 4:23 PM CDT	River Flood Warning	DMX	Black Hawk	4 days
Jun 24, 6:15 PM CDT	Areal Flood Warning	DMX	Butler, Franklin, Grundy, Hardin	24 hr

Nearby

Severe Thunderstorm Warnings in Iowa, 2013 Every 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.