Alert archive / Iowa / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 232, NWS Des Moines, IA

June 11, 2008Hancock County, Winnebago County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jun 11, 2008, 9:35 PM CDT for Hancock County, Winnebago County, 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 outline as issued.

The facts

Issued: Jun 11, 2008, 9:35 PM CDT (02:35 UTC)
Expired: Jun 11, 2008, 10:15 PM CDT
In force: 40 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon

Counties Hancock County, IA, Winnebago County, IA

The radar

The Des Moines radar (KDMX), 166 km from the middle of the area, began a volume at 02:39 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

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 11, 2:52 PM CDT	Tornado Watch	SPC	7 hr
Jun 11, 8:39 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 2.6 hours before the alert went out and 182 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: 47 J/kg
Mixed-layer CIN: -333 J/kg
Mixed-layer LCL: 523 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 574 m²/s²
0-3 km storm-relative helicity: 740 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KDMX 120234
SVRDMX
IAC081-189-120315-
/O.NEW.KDMX.SV.W.0232.080612T0235Z-080612T0315Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
935 PM CDT WED JUN 11 2008

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN HANCOCK COUNTY IN NORTH CENTRAL IOWA...
  SOUTHERN WINNEBAGO COUNTY IN NORTH CENTRAL IOWA...

* UNTIL 1015 PM CDT.

* AT 930 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
  DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED 12
  MILES SOUTHWEST OF WODEN...OR 42 MILES NORTH OF FORT DODGE...AND
  MOVING EAST AT 38 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WODEN BY 945 PM CDT...
  BRITT BY 950 PM CDT...
  CRYSTAL LAKE BY 955 PM CDT...
  FOREST CITY BY 1005 PM CDT...
  LELAND BY 1010 PM CDT...

GO TO A BASEMENT OR SMALL INTERIOR ROOM. COVER YOURSELF. EVACUATE
MOBILE HOMES...AND SEEK SHELTER IN A STURDY BUILDING. LARGE WIND
BLOWN HAIL...AND SEVERE STRAIGHT LINE WINDS CAN CAUSE EXTENSIVE
DAMAGE JUST LIKE A TORNADO.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO WARNING.
ALTHOUGH NOT IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY
AND MOVE TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A
BASEMENT OR SMALL INTERIOR ROOM.

LAT...LON 4340 9350 4313 9350 4305 9398 4309 9399
      4325 9398
TIME...MOT...LOC 0235Z 248DEG 33KT 4312 9400

$$

KINNEY

2 follow-up statements

000 
WWUS53 KDMX 120258
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
958 PM CDT WED JUN 11 2008

IAC081-189-120315-
/O.CON.KDMX.SV.W.0232.000000T0000Z-080612T0315Z/
WINNEBAGO IA-HANCOCK IA-
958 PM CDT WED JUN 11 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR NORTHERN HANCOCK AND SOUTHEASTERN WINNEBAGO COUNTIES...

AT 956 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR FOREST CITY...OR 24
MILES WEST OF MASON CITY...MOVING EAST AT 41 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  RURAL EASTERN WINNEBAGO COUNTY AT 1010 PM CDT

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM CDT THURSDAY MORNING
FOR IOWA.

LAT...LON 4325 9351 4313 9398 4324 9398 4325 9397
      4340 9350
TIME...MOT...LOC 0258Z 249DEG 36KT 4329 9361

$$

LEE

000 
WWUS53 KDMX 120314 RRA
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1015 PM CDT WED JUN 11 2008

IAC081-189-120325-
/O.EXP.KDMX.SV.W.0232.000000T0000Z-080612T0315Z/
WINNEBAGO IA-HANCOCK IA-
1015 PM CDT WED JUN 11 2008

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN HANCOCK AND
SOUTHEASTERN WINNEBAGO COUNTIES HAS EXPIRED...

AT 1013 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE WEAKENED...AND NO
LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY. THEREFORE...THE
SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE.

REPORT TORNADOES...WIND IN EXCESS OF 50 MPH...HAIL LARGER THAN ONE
HALF INCH...OR STORM DAMAGE BY CALLING LOCAL LAW ENFORCEMENT AND
ASKING THEM TO RELAY THE REPORT TO THE NATIONAL WEATHER SERVICE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM CDT THURSDAY MORNING
FOR IOWA.

LAT...LON 4325 9351 4313 9398 4324 9398 4325 9397
      4340 9350
TIME...MOT...LOC 0315Z 249DEG 36KT 4335 9339

$$

KINNEY

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 11, 6:48 PM CDT, 2 hours 47 minutes earlier.

Area forecast discussion, Jun 11, 6:48 PM CDT, 2 hours 47 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DES MOINES IA
648 PM CDT WED JUN 11 2008

.DISCUSSION...
LARGE MID-LEVEL CYCLONE SITS OVER NORTHERN ROCKIES WITH SHORTWAVE
SWINGING AROUND ITS SOUTHERN PERIPHERY EVIDENT ON WV IMAGERY. SFC
ANALYSIS SHOWS LOW PRESSURE NEARLY STATIONARY IN EASTERN SD WITH
WARM/STATIONARY FRONT STRETCHED ACROSS SOUTHERN MN AND WI...AND COLD
FRONT EXTENDING THROUGH EASTERN NE AND CENTRAL/WESTERN KS. DEEP
SOUTHERLY FLOW IN THE WARM SECTOR HAS ALLOWED LOW-LEVEL MOISTURE TO
POOL UP ACROSS OUR AREA...WITH DEWPOINTS NOW IN THE MID/UPPER 60S
ACROSS THE SOUTHERN 2/3 OF THE STATE. SKIES HAVE LARGELY CLEARED OUT
BEHIND EARLIER CONVECTIVE CLUSTER AND ARE NOW PARTLY CLOUDY OVER
MUCH OF CENTRAL IOWA...ALLOWING TEMPERATURES TO RISE INTO THE LOWER
80S IN SOME LOCATIONS.

WITH THE INCREASE IN LOW-LEVEL MOISTURE AND WARM AIR INSTABILITY IS
INCREASING SIGNIFICANTLY. WIND SHEAR ALSO HIGH WITH SWERLY FLOW
ALOFT AND AN 850 MB JET OVER WESTERN IA. AS THE MID-LEVEL SHORTWAVE
REVOLVES AROUND THE SOUTHEASTERN PERIPHERY OF THE LOW THIS
EVENING...IT WILL KICK THE SURFACE LOW NORTHEAST BRINGING THE COLD
FRONT THROUGH CENTRAL IA OVERNIGHT. FIRST THREAT WILL BE ISOLATED
CONVECTION IN THE WARM SECTOR WELL AHEAD OF THE FRONT THIS
EVENING/EARLY TONIGHT...HOWEVER IT APPEARS THAT WARM AIR ABOVE THE
SFC WILL PROVIDE SUFFICIENT CAP TO KEEP THIS IN CHECK. ANYTHING THAT
DOES DEVELOP IN THIS TIMEFRAME WILL HAVE A GOOD CHANCE OF GOING
SEVERE GIVEN THE ENVIRONMENT. STORMS ALONG AND JUST AHEAD OF THE
COLD FRONT WILL ENTER OUR AREA BETWEEN 00Z AND 04Z...MOVING ACROSS
THROUGH THE NIGHT. PRIMARY SEVERE THREAT WILL BE NWERN HALF OF
CWA...WITH CONVECTION TRANSITIONING TO ELEVATED AND SEVERE THREAT
DIMINISHING BUT STILL PRESENT AFTER ABOUT MIDNIGHT. QPF DIFFICULT TO
PIN DOWN TONIGHT...BUT HEAVY RAIN WILL BE WIDESPREAD WITH THE
HIGHEST AMOUNTS LIKELY EARLIER IN THE NIGHT ACROSS THE NORTHWEST.

FRONT WILL MOVE SOUTHEAST ACROSS IA ON THU AND MAY SEE ADNL TSRA
DURING THE AFTERNOON OVER THE SERN THIRD. THAT SHOULD MOVE SE OF
THE CWA BY SNST AND EXPECT IA TO MISS MOST OF THE CWA. PTRN CHNG
WILL GIVE IA A BREAK FRM THE ACTIVE WX FOR ABOUT A WEEK AS THE OVR
ALL PTRN BASICALLY SHIFTS 180 DEGREES. SOME PCPN ON TAP FOR THE
SUN INTO MON TIMEFRAME, BUT NOT AS WDSPRD OR HEAVY AS HAS BEEN THE
CASE OF LATE.

&&

.AVIATION...12/00Z
SVR SQUALL LINE ENTERING WRN IA WILL BE THE MAIN WX FEAT WITH THIS
SET.  TIMED THE SYS ACRS THE CWA OVR NGT WITH IT REACHING KFOD BY
AROUND 02Z AND KOTM ARND 08Z.  MAIN AREA LKLY TO LAST ABOUT 2 HRS
WITH SOME -TSRA AFT MAIN LINE.  OUTSIDE OF TSRA, GENL VFR CONDS WILL
HOLD THRU FCST PD.  WILL BE A CHANCE OF REDEVELOPMENT OVR THE SERN
TAFS BY THE MID DAY PERIOD ON THU...WITH ENTIRE AREA SHIFTING SWD BY
END OF TAF PD.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH THROUGH THURSDAY AFTERNOON FOR ADAIR-ADAMS-
AUDUBON-BLACK HAWK-BOONE-BREMER-BUTLER-CALHOUN-CARROLL-CASS-
CERRO GORDO-CRAWFORD-DALLAS-EMMET-FRANKLIN-GREENE-GRUNDY-GUTHRIE-
HAMILTON-HANCOCK-HARDIN-HUMBOLDT-JASPER-KOSSUTH-MADISON-MARSHALL-
PALO ALTO-POCAHONTAS-POLK-POWESHIEK-SAC-STORY-TAMA-TAYLOR-UNION-
WEBSTER-WINNEBAGO-WORTH-WRIGHT.

&&

MS JUN 08

Hazardous weather outlook, Jun 11, 3:48 PM CDT, 5 hours 47 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
348 PM CDT WED JUN 11 2008

IAZ026>028-037>039-048>050-060>062-072>075-082>086-093>097-122100-
FRANKLIN-BUTLER-BREMER-HARDIN-GRUNDY-BLACK HAWK-STORY-MARSHALL-
TAMA-POLK-JASPER-POWESHIEK-MADISON-WARREN-MARION-MAHASKA-UNION-
CLARKE-LUCAS-MONROE-WAPELLO-RINGGOLD-DECATUR-WAYNE-APPANOOSE-
DAVIS-
348 PM CDT WED JUN 11 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...TONIGHT

STRONG THUNDERSTORMS WILL DEVELOP TO THE WEST AND MOVE INTO THE
AREA THIS EVENING. THE STRONG STORMS WILL ADVANCE EAST TO THE
INTERSTATE 35 CORRIDOR BY AROUND MIDNIGHT. ALL MODES OF SEVERE
WEATHER AREA LIKELY THIS EVENING. WIDESPREAD HEAVY RAIN IS ALSO
LIKELY WITH THESE STORMS.

NUMEROUS AREAL AND RIVER FLOOD WARNINGS ARE IN EFFECT ACROSS
CENTRAL IOWA. FOR ADDITIONAL INFORMATION PLEASE REFER TO THE
NATIONAL WEATHER SERVICE WEBSITE AT WEATHER.GOV/DESMOINES.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE WILL BE A CHANCE FOR THUNDERSTORMS LINGERING INTO THURSDAY
EVENING. THERE WILL BE ANOTHER CHANCE FOR THUNDERSTORMS EARLY
FRIDAY AND A BETTER CHANCE FOR STORMS ON SUNDAY INTO MONDAY. THE
SEVERE WEATHER POTENTIAL AT THIS TIME LOOKS TO BE MINIMAL WHILE
THE HEAVY RAIN POTENTIAL HAS YET TO BE DETERMINED.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS LIKELY FOR A TWO TO THREE HOUR PERIOD FROM
THE BEGINNING OF THE THUNDERSTORMS THIS EVENING...AND IS NOT
EXPECTED THURSDAY.

IAZ004>007-015>017-023>025-033>036-044>047-057>059-070-071-081-
092-122100-
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-SAC-CALHOUN-WEBSTER-HAMILTON-CRAWFORD-
CARROLL-GREENE-BOONE-AUDUBON-GUTHRIE-DALLAS-CASS-ADAIR-ADAMS-
TAYLOR-
348 PM CDT WED JUN 11 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...TONIGHT

STRONG THUNDERSTORMS WILL DEVELOP AND MOVE INTO WESTERN IOWA THIS
EVENING. THE STORMS WILL ADVANCE TO THE INTERSTATE 35 CORRIDOR BY
AROUND MIDNIGHT...AND ACROSS OUR AREA BETWEEN MIDNIGHT AND 5 AM.
THE MAIN SEVERE WEATHER THIRD WILL BE FOR HAIL AND HIGH WINDS.
WIDESPREAD HEAVY RAIN IS ALSO LIKELY WITH THESE STORMS.

NUMEROUS AREAL AND RIVER FLOOD WARNINGS ARE IN EFFECT ACROSS
CENTRAL IOWA. FOR ADDITIONAL INFORMATION PLEASE REFER TO THE
NATIONAL WEATHER SERVICE WEBSITE AT WEATHER.GOV/DESMOINES.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE WILL BE A CHANCE FOR THUNDERSTORMS LINGERING INTO EARLY
FRIDAY. SEVERE THUNDERSTORMS WILL BE POSSIBLE SOUTHEAST OF A
LAMONI TO TAMA LINE DURING THE AFTERNOON THURSDAY. A BETTER CHANCE
FOR STORMS WILL ARRIVE ON SUNDAY INTO MONDAY. THE SEVERE WEATHER
POTENTIAL AT THIS TIME LOOKS TO BE MINIMAL WHILE THE HEAVY RAIN
POTENTIAL HAS YET TO BE DETERMINED.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS POSSIBLE FROM AROUND MIDNIGHT THROUGH THE
PREDAWN HOURS...AND POSSIBLY THURSDAY AFTERNOON.

In the hours before

Local storm report, Jun 11, 8:42 PM CDT, 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
842 PM CDT WED JUN 11 2008

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

0840 PM     TSTM WND GST     2 E ARCADIA             42.09N 95.00W
06/11/2008  E60 MPH          CARROLL            IA   TRAINED SPOTTER

&&

COGIL

Local storm report, Jun 11, 8:53 PM CDT, 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
853 PM CDT WED JUN 11 2008

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

0835 PM     TSTM WND DMG     4 W CARROLL             42.08N 94.94W
06/11/2008                   CARROLL            IA   EMERGENCY MNGR

            POWER POLES DOWN AND THE INTERSECTION OF IVY AVENUE AND
            HIGHWAY 30.

&&

COGIL

Local storm report, Jun 11, 9:02 PM CDT, 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
902 PM CDT WED JUN 11 2008

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

0827 PM     TSTM WND DMG     4 ESE ARMSTRONG         43.38N 94.40W
06/11/2008                   KOSSUTH            IA   TRAINED SPOTTER

            1 1/2 FOOT DIAMTER ASH TREE DOWN.

&&

MRUSSELL

Local storm report, Jun 11, 9:03 PM CDT, 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
903 PM CDT WED JUN 11 2008

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

0903 PM     HEAVY RAIN       4 E ARMSTRONG           43.39N 94.40W
06/11/2008  M1.46 INCH       KOSSUTH            IA   TRAINED SPOTTER

&&

MRUSSELL

Local storm report, Jun 11, 9:22 PM CDT, 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
922 PM CDT WED JUN 11 2008

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

0743 PM     TSTM WND DMG     1 SSW WALLINGFORD       43.30N 94.80W
06/11/2008                   EMMET              IA   EMERGENCY MNGR

            16 TO 18 INCH DIAMETER TREE DOWN.

&&

PODRAZIK

Local storm report, Jun 11, 9:32 PM CDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
932 PM CDT WED JUN 11 2008

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

0852 PM     TSTM WND DMG     5 NNE CARROLL           42.14N 94.82W
06/11/2008                   CARROLL            IA   TRAINED SPOTTER

            14 TO 16 INCH DIAMETER TREE DOWN.

&&

PODRAZIK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 7:12 PM CDT	Tornado Warning	DMX	Emmet, Palo Alto	48 min
Jun 11, 7:29 PM CDT	Tornado Warning	DMX	Emmet, Palo Alto	46 min
Jun 11, 7:39 PM CDT	Tornado Warning	DMX	Crawford	18 min
Jun 11, 7:41 PM CDT	Tornado Warning	DMX	Palo Alto, Pocahontas	34 min
Jun 11, 7:46 PM CDT	Severe Thunderstorm Warning	DMX	Crawford	44 min
Jun 11, 7:53 PM CDT	Tornado Warning	DMX	Crawford	52 min
Jun 11, 7:59 PM CDT	Flash Flood Warning	DMX	Crawford	6 hr
Jun 11, 8:02 PM CDT	Tornado Warning	DMX	Sac	28 min
Jun 11, 8:08 PM CDT	Flash Flood Warning	DMX	Palo Alto, Pocahontas	6 hr
Jun 11, 8:12 PM CDT	Severe Thunderstorm Warning	DMX	Kossuth	48 min
Jun 11, 8:15 PM CDT	Tornado Warning	DMX	Palo Alto, Pocahontas	45 min
Jun 11, 8:17 PM CDT	Tornado Warning	DMX	Audubon, Carroll	43 min
Jun 11, 8:26 PM CDT	Tornado Warning	DMX	Palo Alto, Pocahontas	34 min
Jun 11, 8:31 PM CDT	Tornado Warning	DMX	Carroll	29 min
Jun 11, 8:33 PM CDT	Tornado Warning	DMX	Kossuth	42 min
Jun 11, 8:48 PM CDT	Severe Thunderstorm Warning	DMX	Carroll, Greene	27 min
Jun 11, 8:48 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Sac	57 min
Jun 11, 8:52 PM CDT	Flash Flood Warning	DMX	Sac	6 hr
Jun 11, 8:59 PM CDT	Severe Thunderstorm Warning	DMX	Audubon, Cass	46 min
Jun 11, 8:59 PM CDT	Tornado Warning	DMX	Palo Alto, Pocahontas	31 min
Jun 11, 9:06 PM CDT	Flash Flood Warning	DMX	Kossuth	6 hr
Jun 11, 9:10 PM CDT	Severe Thunderstorm Warning	DMX	Webster	50 min
Jun 11, 9:12 PM CDT	Tornado Warning	DMX	Kossuth	33 min
Jun 11, 9:16 PM CDT	Flash Flood Warning	DMX	Audubon, Carroll, Cass	6 hr
Jun 11, 9:18 PM CDT	Severe Thunderstorm Warning	DMX	Greene, Guthrie	42 min
Jun 11, 9:33 PM CDT	Flash Flood Warning	DMX	Cerro Gordo, Worth	6 hr
Jun 11, 9:37 PM CDT	Severe Thunderstorm Warning	DMX	Kossuth, Winnebago	38 min
Jun 11, 9:54 PM CDT	Severe Thunderstorm Warning	DMX	Boone	36 min
Jun 11, 9:55 PM CDT	Flash Flood Warning	DMX	Adair, Greene, Guthrie, Webster	6 hr
Jun 11, 9:57 PM CDT	Severe Thunderstorm Warning	DMX	Hamilton, Humboldt, Webster, Wright	48 min
Jun 11, 10:01 PM CDT	Severe Thunderstorm Warning	DMX	Hamilton, Webster, Wright	44 min
Jun 11, 10:02 PM CDT	River Flood Warning	DMX	Humboldt	13 hr
Jun 11, 10:21 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Hancock	39 min
Jun 11, 10:26 PM CDT	Flash Flood Warning	DMX	Boone, Dallas	6 hr
Jun 11, 10:26 PM CDT	Severe Thunderstorm Warning	DMX	Story	49 min
Jun 11, 10:32 PM CDT	Severe Thunderstorm Warning	DMX	Hardin	43 min
Jun 11, 10:34 PM CDT	Flash Flood Warning	DMX	Franklin, Hamilton, Story, Wright	6 hr
Jun 11, 10:38 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Franklin	52 min
Jun 11, 11:01 PM CDT	Severe Thunderstorm Warning	DMX	Butler, Grundy	44 min
Jun 11, 11:04 PM CDT	Severe Thunderstorm Warning	DMX	Grundy, Marshall, Tama	56 min
Jun 11, 11:08 PM CDT	Flash Flood Warning	DMX	Hancock, Winnebago	6 hr
Jun 11, 11:16 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo	29 min
Jun 11, 11:20 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Bremer	55 min
Jun 11, 11:27 PM CDT	Flash Flood Warning	DMX	Adams	6 hr
Jun 12, 12:08 AM CDT	River Flood Warning	DMX	Cass	21 hr
Jun 12, 12:15 AM CDT	Flash Flood Warning	DMX	Black Hawk, Bremer, Butler, Grundy	6 hr
Jun 12, 12:23 AM CDT	Flash Flood Warning	DMX	Polk	6 hr
Jun 12, 12:28 AM CDT	Flash Flood Warning	DMX	Madison	6 hr
Jun 12, 1:28 AM CDT	Flash Flood Warning	DMX	Marshall, Tama	6 hr
Jun 12, 2:26 AM CDT	Areal Flood Warning	DMX	Palo Alto, Pocahontas	6 hr
Jun 12, 3:06 AM CDT	Areal Flood Warning	DMX	Kossuth	6 hr
Jun 12, 3:22 AM CDT	Areal Flood Warning	DMX	Audubon, Carroll, Cass	5 hr
Jun 12, 3:50 AM CDT	Areal Flood Warning	DMX	Adair, Guthrie	6 hr
Jun 12, 4:05 AM CDT	Severe Thunderstorm Warning	DMX	Decatur, Wayne	40 min
Jun 12, 4:23 AM CDT	Severe Thunderstorm Warning	DMX	Adair, Dallas, Guthrie	23 min
Jun 12, 5:30 AM CDT	Areal Flood Warning	DMX	Adams	3 hr
Jun 12, 6:26 AM CDT	Areal Flood Warning	DMX	Madison	3 hr
Jun 12, 7:00 AM CDT	Areal Flood Warning	DMX	Adair, Adams, Audubon, Black Hawk, Boone, Bremer and 26 more	12 hr
Jun 12, 9:39 AM CDT	River Flood Warning	DMX	Decatur	34 hr
Jun 12, 12:21 PM CDT	River Flood Warning	DMX	Story	15 hr
Jun 12, 1:13 PM CDT	River Flood Warning	DMX	Lucas	38 hr
Jun 12, 1:27 PM CDT	River Flood Warning	DMX	Polk	14 hr
Jun 12, 3:04 PM CDT	Areal Flood Warning	DMX	Marion	12 hr
Jun 12, 3:09 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marion	29 min
Jun 12, 3:29 PM CDT	Severe Thunderstorm Warning	DMX	Poweshiek	27 min
Jun 12, 3:47 PM CDT	Severe Thunderstorm Warning	DMX	Tama	28 min
Jun 12, 3:58 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Poweshiek	27 min
Jun 12, 4:21 PM CDT	Tornado Warning	DMX	Appanoose, Davis	39 min
Jun 12, 4:40 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Wayne	34 min
Jun 12, 4:47 PM CDT	Severe Thunderstorm Warning	DMX	Monroe	32 min
Jun 12, 4:57 PM CDT	Tornado Warning	DMX	Davis	48 min
Jun 12, 5:06 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska	39 min
Jun 12, 5:19 PM CDT	Flash Flood Warning	DMX	Appanoose, Davis, Monroe, Wapello	12 hr
Jun 12, 5:26 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Wayne	14 min
Jun 12, 5:30 PM CDT	Severe Thunderstorm Warning	DMX	Mahaska, Poweshiek	17 min
Jun 12, 5:36 PM CDT	Severe Thunderstorm Warning	DMX	Monroe	24 min
Jun 12, 5:48 PM CDT	Tornado Warning	DMX	Davis	30 min
Jun 12, 6:56 PM CDT	Areal Flood Warning	DMX	Adair, Adams, Black Hawk, Boone, Bremer, Butler and 17 more	12 hr

Nearby

Severe Thunderstorm Warnings in Iowa, 2008 Every severe thunderstorm warning in 2008

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.