Alert archive / Iowa / Tornado Warnings in 2010

Tornado Warning 39, NWS Des Moines, IA

June 25, 2010Cerro Gordo County, Worth County, Iowa

NWS Des Moines, IA issued this tornado warning at Jun 25, 2010, 8:39 PM CDT for Cerro Gordo County, Worth County, Iowa. It was in force for 39 min. 2 reports 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 25, 2010, 8:39 PM CDT (01:39 UTC)
Expired
Jun 25, 2010, 9:18 PM CDT
In force
39 min
Issued by
NWS Des Moines, IA
Area
Storm-based polygon

Counties Cerro Gordo County, IA, Worth County, IA

The radar

The La Crosse radar (KARX), 166 km from the middle of the area, began a volume at 01:39 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.

What was reported inside it

TimeReportWhereRemark
Jun 25, 8:45 PM CDTTSTM WND GST 608 W Northwood, IANUMEROUS 2 TO 4 INCH BRANCHES DOWN
Jun 25, 8:55 PM CDTTSTM WND DMG5 Ne Joice, IATREE REPORTED DOWN OVER HIGHWAY 105. REPORT RELAYED BY KAAL.

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 25, 3:35 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.7 hours before the alert went out and 166 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 00:00Z on 2010-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1350 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2010-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 166 square meters per square second.19395878Sfc1 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
1350 J/kg
Mixed-layer CIN
-28 J/kg
Mixed-layer LCL
1067 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
166 m²/s²
0-3 km storm-relative helicity
350 m²/s²
Significant tornado parameter
2.6
Supercell composite
13.6

Open this sounding in Storm Lab

The text

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

124 
WFUS53 KDMX 260139
TORDMX
IAC033-195-260230-
/O.NEW.KDMX.TO.W.0039.100626T0139Z-100626T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
839 PM CDT FRI JUN 25 2010

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN CERRO GORDO COUNTY IN NORTH CENTRAL IOWA...
  WORTH COUNTY IN NORTH CENTRAL IOWA...

* UNTIL 930 PM CDT

* AT 836 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 12 MILES NORTHWEST OF NORTHWOOD...OR 32 MILES
  NORTH OF MASON CITY...AND MOVING SOUTHEAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  NORTHWOOD...MANLY...HANLONTOWN...KENSETT...MASON CITY AIRPORT...
  GRAFTON...PLYMOUTH AND ROCK FALLS.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 196 AND 218.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IMMEDIATELY SEEK SHELTER IN A BASEMENT...
OR IN AN INTERIOR ROOM OF A REINFORCED BUILDING. STAY AWAY FROM
WINDOWS.

IF YOU ARE OUTSIDE...IN A MOBILE HOME...OR IN A VEHICLE...SEEK
SHELTER IN A NEARBY REINFORCED BUILDING. AS A LAST RESORT...FIND THE
LOWEST SPOT AVAILABLE AND COVER YOUR HEAD.

IN ADDITION TO THE TORNADO...THIS STORM IS ALSO EXPECTED TO PRODUCE 
GOLFBALL SIZE HAIL AND WIDESPREAD DESTRUCTIVE WINDS.

MOTORISTS SHOULD NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. AS A LAST
RESORT...EITHER PARK YOUR VEHICLE AND STAY PUT...OR ABANDON YOUR
VEHICLE AND SEEK THE LOWEST SPOT AVAILABLE...AND COVER YOUR HEAD.

&&

LAT...LON 4349 9301 4318 9302 4316 9335 4350 9350
      4351 9306
TIME...MOT...LOC 0139Z 313DEG 42KT 4357 9330

$$

BEERENDS
2 follow-up statements
272 
WWUS53 KDMX 260154
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
854 PM CDT FRI JUN 25 2010

IAC033-195-260230-
/O.CON.KDMX.TO.W.0039.000000T0000Z-100626T0230Z/
WORTH IA-CERRO GORDO IA-
854 PM CDT FRI JUN 25 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN CERRO GORDO
AND WORTH COUNTIES UNTIL 930 PM CDT...

AT 850 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR NORTHWOOD...OR 22 MILES NORTH OF MASON CITY...
MOVING SOUTHEAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  MANLY...KENSETT...GRAFTON...PLYMOUTH AND ROCK FALLS.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 196 AND 218.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IMMEDIATELY SEEK SHELTER IN A BASEMENT...OR INTERIOR ROOM. STAY AWAY
FROM WINDOWS.

IF YOU ARE OUTSIDE...IN A MOBILE HOME...OR IN A VEHICLE...SEEK
SHELTER IN A NEARBY REINFORCED BUILDING. AS A LAST RESORT...FIND THE
LOWEST SPOT AVAILABLE AND COVER YOUR HEAD.

IN ADDITION TO THE TORNADO...THIS STORM IS ALSO EXPECTED TO PRODUCE 
GOLFBALL SIZE HAIL AND WIDESPREAD DESTRUCTIVE WINDS.

MOTORISTS SHOULD NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. AS A LAST
RESORT... EITHER PARK YOUR VEHICLE AND STAY PUT...OR ABANDON YOUR
VEHICLE AND SEEK THE LOWEST SPOT AVAILABLE...AND COVER YOUR HEAD.

&&

LAT...LON 4349 9301 4318 9302 4316 9335 4350 9350
      4351 9306
TIME...MOT...LOC 0154Z 308DEG 31KT 4344 9318

$$

BEERENDS
165 
WWUS53 KDMX 260218
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
918 PM CDT FRI JUN 25 2010

IAC033-195-260228-
/O.CAN.KDMX.TO.W.0039.000000T0000Z-100626T0230Z/
WORTH IA-CERRO GORDO IA-
918 PM CDT FRI JUN 25 2010

...THE TORNADO WARNING FOR NORTHEASTERN CERRO GORDO AND WORTH
COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.  HOWEVER SMALL HAIL AND GUSTY WINDS ARE STILL POSSIBLE WITH
THIS THUNDERSTORM.

IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A TORNADO
WATCH REMAINS IN EFFECT UNTIL MIDNIGHT

REMEMBER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CERRO 
GORDO AND WORTH COUNTIES.

LAT...LON 4349 9301 4318 9302 4316 9335 4350 9350
      4351 9306
TIME...MOT...LOC 0218Z 308DEG 31KT 4331 9296

$$

BEERENDS

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 25, 8:24 PM CDTSevere Thunderstorm WarningDMXCerro Gordo, Hancock, Kossuth, Winnebago, Worth66 min
Jun 25, 9:11 PM CDTSevere Thunderstorm WarningDMXButler, Cerro Gordo, Franklin49 min
Jun 25, 9:26 PM CDTSevere Thunderstorm WarningDMXEmmet, Hancock, Humboldt, Kossuth, Palo Alto, Winnebago and 1 more49 min
Jun 25, 9:38 PM CDTSevere Thunderstorm WarningDMXEmmet, Palo Alto67 min
Jun 25, 9:58 PM CDTSevere Thunderstorm WarningDMXBlack Hawk, Bremer, Butler47 min
Jun 25, 10:02 PM CDTSevere Thunderstorm WarningDMXButler, Franklin, Grundy, Hamilton, Hardin, Humboldt and 2 more43 min
Jun 25, 10:06 PM CDTTornado WarningDMXWright24 min
Jun 25, 10:09 PM CDTTornado WarningDMXHumboldt, Wright12 min
Jun 25, 10:17 PM CDTFlash Flood WarningDMXButler, Franklin, Wright6 hr
Jun 25, 10:35 PM CDTSevere Thunderstorm WarningDMXBlack Hawk, Bremer, Butler, Grundy40 min
Jun 25, 10:37 PM CDTSevere Thunderstorm WarningDMXCalhoun, Emmet, Humboldt, Kossuth, Palo Alto, Pocahontas and 2 more53 min
Jun 25, 10:40 PM CDTSevere Thunderstorm WarningDMXBoone, Grundy, Hamilton, Hardin, Marshall, Story and 2 more50 min
Jun 25, 11:23 PM CDTRiver Flood WarningDMXEmmet13 days
Jun 25, 11:31 PM CDTFlash Flood WarningDMXEmmet, Palo Alto6 hr
Jun 25, 11:33 PM CDTSevere Thunderstorm WarningDMXBoone, Dallas, Jasper, Polk, Story57 min
Jun 25, 11:35 PM CDTAreal Flood AdvisoryDMXEmmet, Kossuth, Palo Alto3 hr
Jun 25, 11:45 PM CDTSevere Thunderstorm WarningDMXHumboldt, Palo Alto, Pocahontas, Sac60 min
Jun 26, 12:13 AM CDTFlash Flood WarningDMXHumboldt, Pocahontas, Webster6 hr
Jun 26, 12:20 AM CDTSevere Thunderstorm WarningDMXHamilton, Humboldt, Pocahontas, Webster, Wright40 min
Jun 26, 12:45 AM CDTSevere Thunderstorm WarningDMXCalhoun, Pocahontas60 min
Jun 26, 1:38 AM CDTSevere Thunderstorm WarningDMXAppanoose, Davis, Monroe, Wapello37 min
Jun 26, 3:52 AM CDTSevere Thunderstorm WarningDMXPalo Alto38 min
Jun 26, 3:55 AM CDTFlash Flood WatchDMXAdair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more28 hr
Jun 26, 4:30 AM CDTSevere Thunderstorm WarningDMXHumboldt, Kossuth, Palo Alto, Pocahontas60 min
Jun 26, 5:06 AM CDTRiver Flood WarningDMXWebster7 days
Jun 26, 5:09 AM CDTRiver Flood WarningDMXPalo Alto4 days
Jun 26, 5:29 AM CDTSevere Thunderstorm WarningDMXDallas, Polk23 min
Jun 26, 6:05 AM CDTAreal Flood WarningDMXHumboldt12 hr
Jun 26, 6:34 AM CDTRiver Flood WarningDMXMahaska6 days
Jun 26, 7:00 AM CDTAreal Flood WarningDMXPalo Alto12 hr
Jun 26, 9:54 AM CDTRiver Flood WarningDMXMadison, Warren5 hr
Jun 26, 4:22 PM CDTRiver Flood WarningDMXJasper, Marion, Polk4 hr
Jun 26, 4:34 PM CDTRiver Flood WarningDMXMarshall5 days

Nearby

Tornado Warnings in Iowa, 2010Every tornado warning in 2010Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.