Alert archive / Iowa / Tornado Warnings in 2008

Tornado Warning 65, NWS Des Moines, IA

June 7, 2008Hancock County, Winnebago County, Worth County, Iowa

NWS Des Moines, IA issued this tornado warning at Jun 7, 2008, 4:25 PM CDT for Hancock County, Winnebago County, Worth County, Iowa. It was in force for 50 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jun 7, 2008, 4:25 PM CDT (21:25 UTC)
Expired
Jun 7, 2008, 5:15 PM CDT
In force
50 min
Issued by
NWS Des Moines, IA
Area
Storm-based polygon

Counties Hancock County, IA, Winnebago County, IA, Worth County, IA

The radar

The Minneapolis radar (KMPX), 167 km from the middle of the area, began a volume at 21:28 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 was reported inside it

TimeReportWhereRemark
Jun 7, 4:25 PM CDTTSTM WND DMG4 Ssw Thompson, IADELAYED REPORT OF POWERLINES DOWN.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

IssuedProductOfficeLasted
Jun 7, 12:17 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.4 hours before the alert went out and 168 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2008-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 131 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2008-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 318 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
131 J/kg
Mixed-layer CIN
-253 J/kg
Mixed-layer LCL
1341 m above ground
0-6 km bulk shear
74 kt
0-1 km storm-relative helicity
318 m²/s²
0-3 km storm-relative helicity
357 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KDMX 072125
TORDMX
IAC081-189-195-072215-
/O.NEW.KDMX.TO.W.0065.080607T2125Z-080607T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
425 PM CDT SAT JUN 7 2008

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN HANCOCK COUNTY IN NORTH CENTRAL IOWA...
  WINNEBAGO COUNTY IN NORTH CENTRAL IOWA...
  WESTERN WORTH COUNTY IN NORTH CENTRAL IOWA...

* UNTIL 515 PM CDT.

* AT 423 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR CRYSTAL
  LAKE...OR 30 MILES WEST OF MASON CITY...MOVING EAST AT 46 MPH.

* THE TORNADO WILL BE NEAR...
  FOREST CITY BY 430 PM CDT...
  LELAND BY 435 PM CDT...
  FERTILE AND JOICE BY 445 PM CDT...
  HANLONTOWN BY 450 PM CDT...

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 203 AND 218.

THIS IS A HAZARDOUS SITUATION. SEEK SHELTER IN A BASEMENT...OR IN AN
INTERIOR ROOM. STAY AWAY FROM WINDOWS. IF YOU ARE OUTSIDE OR IN A
CAR...SEEK SHELTER IN A REINFORCED BUILDING.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT SATURDAY EVENING
FOR NORTHERN IOWA.

LAT...LON 4326 9328 4325 9350 4323 9351 4322 9385
      4337 9390 4351 9347 4350 9330 4350 9329
TIME...MOT...LOC 2125Z 257DEG 40KT 4326 9375

$$

DONAVON
4 follow-up statements
000 
WWUS53 KDMX 072140
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
440 PM CDT SAT JUN 7 2008

IAC081-189-195-072215-
/O.CON.KDMX.TO.W.0065.000000T0000Z-080607T2215Z/
WORTH IA-WINNEBAGO IA-HANCOCK IA-
440 PM CDT SAT JUN 7 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR
NORTHEASTERN HANCOCK...EASTERN WINNEBAGO AND WESTERN WORTH
COUNTIES...

AT 437 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR FOREST CITY...OR
23 MILES WEST OF MASON CITY...MOVING EAST AT 40 MPH.

THE TORNADO WILL BE NEAR...
  8 MILES SOUTH OF LAKE MILLS BY 445 PM CDT...
  FERTILE AND JOICE BY 450 PM CDT...
  HANLONTOWN BY 455 PM CDT...

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 203 AND 218.

SEEK SHELTER IN A BASEMENT...OR IN AN INTERIOR ROOM. STAY AWAY FROM
WINDOWS. IF YOU ARE IN A CAR OR OUTSIDE...SEEK SHELTER IN A
REINFORCED BUILDING.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT SATURDAY EVENING
FOR NORTHERN IOWA.

LAT...LON 4350 9329 4326 9328 4325 9350 4323 9351
      4322 9373 4341 9378 4351 9347
TIME...MOT...LOC 2140Z 257DEG 35KT 4329 9359

$$

DONAVON
000 
WWUS53 KDMX 072149
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
449 PM CDT SAT JUN 7 2008

IAC081-072159-
/O.CAN.KDMX.TO.W.0065.000000T0000Z-080607T2215Z/
HANCOCK IA-
449 PM CDT SAT JUN 7 2008

...THE TORNADO WARNING FOR NORTHEASTERN HANCOCK COUNTY IS
CANCELLED...

AT 446 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE EITHER WEAKENED OR
MOVED OUT OF THE AREA...AND NO LONGER POSE AN IMMEDIATE THREAT TO
LIFE OR PROPERTY. THEREFORE...THE TORNADO WARNING HAS BEEN CANCELLED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT SATURDAY EVENING 
FOR NORTHERN IOWA.

LAT...LON 4340 9329 4339 9329 4326 9328 4325 9350
      4326 9360 4343 9358 4350 9347 4350 9329
TIME...MOT...LOC 2149Z 259DEG 37KT 4329 9346

$$

IAC189-195-072215-
/O.CON.KDMX.TO.W.0065.000000T0000Z-080607T2215Z/
WORTH IA-WINNEBAGO IA-
449 PM CDT SAT JUN 7 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR EASTERN
WINNEBAGO AND WESTERN WORTH COUNTIES...

AT 446 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR FERTILE...OR 18
MILES NORTHWEST OF MASON CITY...MOVING EAST AT 42 MPH.

THE TORNADO WILL BE NEAR...
  HANLONTOWN BY 455 PM CDT...

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 203 AND 218.

SEEK SHELTER IN A BASEMENT...OR IN AN INTERIOR ROOM. STAY AWAY FROM
WINDOWS. IF YOU ARE IN A CAR OR OUTSIDE...SEEK SHELTER IN A
REINFORCED BUILDING.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT SATURDAY EVENING
FOR NORTHERN IOWA.

LAT...LON 4340 9329 4339 9329 4326 9328 4325 9350
      4326 9360 4343 9358 4350 9347 4350 9329
TIME...MOT...LOC 2149Z 259DEG 37KT 4329 9346

$$

MOYER
000 
WWUS53 KDMX 072158
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
458 PM CDT SAT JUN 7 2008

IAC189-072208-
/O.CAN.KDMX.TO.W.0065.000000T0000Z-080607T2215Z/
WINNEBAGO IA-
458 PM CDT SAT JUN 7 2008

...THE TORNADO WARNING FOR SOUTHEASTERN WINNEBAGO COUNTY IS
CANCELLED...

AT 455 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE EITHER WEAKENED OR
MOVED OUT OF THE AREA...AND NO LONGER POSE AN IMMEDIATE THREAT TO
LIFE OR PROPERTY. THEREFORE...THE TORNADO WARNING HAS BEEN CANCELLED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT SATURDAY EVENING 
FOR NORTHERN IOWA.

LAT...LON 4340 9329 4339 9329 4326 9328 4325 9350
      4350 9347 4350 9329
TIME...MOT...LOC 2158Z 259DEG 37KT 4331 9334

$$

IAC195-072215-
/O.CON.KDMX.TO.W.0065.000000T0000Z-080607T2215Z/
WORTH IA-
458 PM CDT SAT JUN 7 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR WESTERN
WORTH COUNTY...

AT 455 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR HANLONTOWN...OR 14
MILES NORTHWEST OF MASON CITY...MOVING EAST AT 42 MPH.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 203 AND 218.

SEEK SHELTER IN A BASEMENT...OR IN AN INTERIOR ROOM. STAY AWAY FROM
WINDOWS. IF YOU ARE IN A CAR OR OUTSIDE...SEEK SHELTER IN A
REINFORCED BUILDING.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT SATURDAY EVENING
FOR NORTHERN IOWA.

LAT...LON 4340 9329 4339 9329 4326 9328 4325 9350
      4350 9347 4350 9329
TIME...MOT...LOC 2158Z 259DEG 37KT 4331 9334

$$

MOYER
000 
WWUS53 KDMX 072211
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
511 PM CDT SAT JUN 7 2008

IAC195-072221-
/O.EXP.KDMX.TO.W.0065.000000T0000Z-080607T2215Z/
WORTH IA-
511 PM CDT SAT JUN 7 2008

...THE TORNADO WARNING FOR WESTERN WORTH COUNTY WILL EXPIRE AT 515 PM
CDT...

AT 509 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA.
THEREFORE...THE TORNADO WARNING HAS BEEN ALLOWED TO EXPIRE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT SATURDAY EVENING
FOR NORTHERN IOWA.

LAT...LON 4340 9329 4339 9329 4326 9328 4325 9350
      4350 9347 4350 9329
TIME...MOT...LOC 2211Z 259DEG 37KT 4334 9317

$$

MOYER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 6, 10:31 PM CDTRiver Flood WarningDMXBlack Hawk, Bremer, Butler12 days
Jun 7, 4:32 AM CDTFlash Flood WatchDMXAdair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more46 hr
Jun 7, 9:44 AM CDTRiver Flood WarningDMXHumboldt13 days
Jun 7, 9:44 AM CDTRiver Flood WarningDMXWebster10 days
Jun 7, 9:44 AM CDTRiver Flood WarningDMXDallas, Polk9 days
Jun 7, 9:44 AM CDTRiver Flood WarningDMXPolk, Story7 days
Jun 7, 9:44 AM CDTRiver Flood WarningDMXCerro Gordo, Floyd, Worth11 days
Jun 7, 3:26 PM CDTSevere Thunderstorm WarningDMXKossuth, Winnebago49 min
Jun 7, 3:34 PM CDTTornado WarningDMXWinnebago, Worth26 min
Jun 7, 3:58 PM CDTTornado WarningDMXWinnebago, Worth32 min
Jun 7, 3:59 PM CDTSevere Thunderstorm WarningDMXHancock, Kossuth, Winnebago30 min
Jun 7, 4:03 PM CDTTornado WarningDMXHancock, Kossuth, Winnebago27 min
Jun 7, 4:29 PM CDTTornado WarningDMXWorth19 min
Jun 7, 4:32 PM CDTFlash Flood WarningDMXWinnebago, Worth6 hr
Jun 7, 4:33 PM CDTTornado WarningDMXKossuth28 min
Jun 7, 4:52 PM CDTTornado WarningDMXHancock23 min
Jun 7, 5:02 PM CDTTornado WarningDMXWorth28 min
Jun 7, 5:16 PM CDTTornado WarningDMXCerro Gordo, Hancock, Winnebago, Worth44 min
Jun 7, 5:50 PM CDTTornado WarningDMXCerro Gordo, Worth25 min
Jun 7, 5:52 PM CDTSevere Thunderstorm WarningDMXCalhoun, Pocahontas, Sac38 min
Jun 7, 6:00 PM CDTTornado WarningDMXCalhoun, Pocahontas30 min
Jun 7, 6:11 PM CDTFlash Flood WarningDMXCerro Gordo, Hancock12 hr
Jun 7, 6:17 PM CDTTornado WarningDMXCerro Gordo43 min
Jun 7, 6:32 PM CDTSevere Thunderstorm WarningDMXCalhoun, Pocahontas, Webster43 min
Jun 7, 6:42 PM CDTSevere Thunderstorm WarningDMXHancock, Humboldt, Wright48 min
Jun 7, 6:46 PM CDTFlash Flood WarningDMXCalhoun, Pocahontas, Sac6 hr
Jun 7, 6:48 PM CDTTornado WarningDMXCalhoun, Pocahontas, Webster27 min

Nearby

Tornado Warnings in Iowa, 2008Every tornado warning in 2008Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.