Alert archive / Iowa / Tornado Warnings in 2013

Tornado Warning 13, NWS Des Moines, IA

June 12, 20134 counties in Iowa

NWS Des Moines, IA issued this tornado warning at Jun 12, 2013, 4:16 PM CDT for 4 counties in Iowa. It was in force for 29 min. 5 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 12, 2013, 4:16 PM CDT (21:16 UTC)
Expired
Jun 12, 2013, 4:45 PM CDT
In force
29 min
Issued by
NWS Des Moines, IA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.25 in

Counties Cerro Gordo County, IA, Franklin County, IA, Hancock County, IA, Wright County, IA

The radar

The Des Moines radar (KDMX), 130 km from the middle of the area, began a volume at 21:17 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 12, 4:17 PM CDTTORNADO1 Nw Belmond, IAWRIGHT COUNTY REPORTED TORNADO DAMAGE WITH POWER LINES DOWN AND A POSSBILE LP GAS LEAK.
Jun 12, 4:24 PM CDTTORNADO1 N Belmond, IATORNADO ON GROUND. MULTIPLE REPORTS FROM LAW ENFORCEMENT AND TRAINED SPOTTERS. LOCATION ESTIMATED
Jun 12, 4:27 PM CDTTORNADOBelmond, IADAMAGE REPORTED ON THE NORTH SIDE OF BELMOND WITH SEVERAL BUSINESSES DAMAGED/DESTROYED. ADDITIONAL DAMAGE TO RESIDENTIAL AREAS REPORTED NORTH OF TOWN WITH OUTBUILDING DAMAGE...SEVERAL HOMES WITH SEVRE DAMAGE AND A DESTROYED HOME. TIME ESTIMATED FROM RADAR.
Jun 12, 4:34 PM CDTTORNADO1 Nw Belmond, IAWRIGHT COUNTY REPORTED TORNADO DAMAGE WITH POWER LINES DOWN AND A POSSBILE LP GAS LEAK.
Jun 12, 4:38 PM CDTTORNADO3 E Alexander, IAREPORT OF DAMAGED OUTBUILDING AND GRAIN BIN. TIME ESTIMATED BY RADAR.

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 12, 1:49 PM CDTTornado Watch PDSSPC9 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.3 hours before the alert went out and 218 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 2013-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2013-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
912 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
52 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

058 
WFUS53 KDMX 122116
TORDMX
IAC033-069-081-197-122145-
/O.NEW.KDMX.TO.W.0013.130612T2116Z-130612T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
416 PM CDT WED JUN 12 2013

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN CERRO GORDO COUNTY IN NORTH CENTRAL IOWA...
  NORTHWESTERN FRANKLIN COUNTY IN NORTH CENTRAL IOWA...
  SOUTHEASTERN HANCOCK COUNTY IN NORTH CENTRAL IOWA...
  NORTHEASTERN WRIGHT COUNTY IN NORTH CENTRAL IOWA...

* UNTIL 445 PM CDT

* AT 413 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR BELMOND...AND MOVING EAST AT 20 MPH.

  HAZARD...TORNADO AND HALF DOLLAR SIZE HAIL.

  SOURCE...RADAR INDICATED ROTATION.

  IMPACT...MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE TO
           ROOFS...WINDOWS AND VEHICLES WILL OCCUR. FLYING DEBRIS
           WILL BE DEADLY TO PEOPLE AND ANIMALS. TREE DAMAGE IS
           LIKELY.

* LOCATIONS IMPACTED INCLUDE...
  BELMOND...MESERVEY...ALEXANDER AND THORNTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4295 9336 4275 9341 4282 9369 4297 9363
TIME...MOT...LOC 2116Z 284DEG 17KT 4287 9363

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$
2 follow-up statements
764 
WWUS53 KDMX 122124
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
424 PM CDT WED JUN 12 2013

IAC033-069-081-197-122145-
/O.CON.KDMX.TO.W.0013.000000T0000Z-130612T2145Z/
HANCOCK IA-FRANKLIN IA-CERRO GORDO IA-WRIGHT IA-
424 PM CDT WED JUN 12 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN WRIGHT...
SOUTHWESTERN CERRO GORDO...NORTHWESTERN FRANKLIN AND SOUTHEASTERN
HANCOCK COUNTIES UNTIL 445 PM CDT...

AT 422 PM CDT...A CONFIRMED TORNADO WAS LOCATED NEAR BELMOND...AND
MOVING EAST AT 20 MPH.

HAZARD...DAMAGING TORNADO AND HALF DOLLAR SIZE HAIL.

SOURCE...LAW ENFORCEMENT CONFIRMED TORNADO.

IMPACT...MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE TO
         ROOFS...WINDOWS AND VEHICLES WILL OCCUR. FLYING DEBRIS WILL
         BE DEADLY TO PEOPLE AND ANIMALS. TREE DAMAGE IS LIKELY.

LOCATIONS IMPACTED INCLUDE...
MESERVEY...ALEXANDER AND THORNTON.

LAW ENFORCEMENT REPORTED A TORNADO ON THE GROUND JUST NORTH OF 
BELMOND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW. MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID
WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE
CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4297 9361 4295 9336 4275 9341 4281 9366
TIME...MOT...LOC 2124Z 284DEG 17KT 4286 9358

TORNADO...OBSERVED
HAIL...1.25IN

$$
672 
WWUS53 KDMX 122138
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
438 PM CDT WED JUN 12 2013

IAC033-069-081-197-122145-
/O.CON.KDMX.TO.W.0013.000000T0000Z-130612T2145Z/
HANCOCK IA-FRANKLIN IA-CERRO GORDO IA-WRIGHT IA-
438 PM CDT WED JUN 12 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN WRIGHT...
SOUTHWESTERN CERRO GORDO...NORTHWESTERN FRANKLIN AND SOUTHEASTERN
HANCOCK COUNTIES UNTIL 445 PM CDT...

AT 436 PM CDT...A CONFIRMED TORNADO WAS LOCATED 8 MILES EAST OF
BELMOND...AND MOVING EAST AT 25 MPH.

HAZARD...DAMAGING TORNADO AND HALF DOLLAR SIZE HAIL.

SOURCE...LAW ENFORCEMENT CONFIRMED TORNADO.

IMPACT...MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE TO
         ROOFS...WINDOWS AND VEHICLES WILL OCCUR. FLYING DEBRIS WILL
         BE DEADLY TO PEOPLE AND ANIMALS. TREE DAMAGE IS LIKELY.

LOCATIONS IMPACTED INCLUDE...
THORNTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW. MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID
WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE
CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4297 9361 4295 9336 4275 9341 4281 9366
TIME...MOT...LOC 2137Z 281DEG 23KT 4285 9344

TORNADO...OBSERVED
HAIL...1.25IN

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 4:25 PM CDTTornado WarningDMXBremer, Butler35 min
Jun 12, 4:39 PM CDTTornado Warning Tornado observedDMXFranklin36 min
Jun 12, 4:49 PM CDTTornado WarningDMXBlack Hawk26 min
Jun 12, 4:54 PM CDTTornado WarningDMXBlack Hawk, Bremer, Butler36 min
Jun 12, 5:14 PM CDTTornado WarningDMXButler, Franklin31 min
Jun 12, 5:29 PM CDTTornado WarningDMXBlack Hawk, Bremer31 min
Jun 12, 5:34 PM CDTTornado WarningDMXCerro Gordo, Franklin41 min
Jun 12, 5:37 PM CDTSevere Thunderstorm WarningDMXWinnebago, Worth53 min
Jun 12, 5:44 PM CDTTornado WarningDMXBlack Hawk, Bremer, Butler31 min
Jun 12, 6:04 PM CDTTornado WarningDMXButler, Franklin41 min
Jun 12, 6:40 PM CDTTornado WarningDMXBlack Hawk, Bremer, Butler35 min

Nearby

Tornado Warnings in Iowa, 2013Every tornado warning in 2013Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.