Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 172, NWS Sioux Falls, SD

July 25, 2012Jackson County, Nobles County, Minnesota; Dickinson County, Iowa

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 25, 2012, 5:15 PM CDT for Jackson County, Nobles County, Minnesota; Dickinson County, Iowa. It was in force for 39 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
Jul 25, 2012, 5:15 PM CDT (22:15 UTC)
Expired
Jul 25, 2012, 5:54 PM CDT
In force
39 min
Issued by
NWS Sioux Falls, SD
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Dickinson County, IA, Jackson County, MN, Nobles County, MN

What was reported inside it

TimeReportWhereRemark
Jul 25, 5:25 PM CDTHAIL 13 N Spirit Lake, IA

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

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.3 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2012-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1629 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 2012-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 421 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
1629 J/kg
Mixed-layer CIN
-285 J/kg
Mixed-layer LCL
1524 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
421 m²/s²
0-3 km storm-relative helicity
458 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.3

Open this sounding in Storm Lab

The text

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

770 
WUUS53 KFSD 252215
SVRFSD
IAC059-MNC063-105-252315-
/O.NEW.KFSD.SV.W.0172.120725T2215Z-120725T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
515 PM CDT WED JUL 25 2012

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN DICKINSON COUNTY IN NORTHWEST IOWA...
  JACKSON COUNTY IN SOUTHWEST MINNESOTA...
  EASTERN NOBLES COUNTY IN SOUTHWEST MINNESOTA...

* UNTIL 615 PM CDT

* AT 515 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
  LOCATED 7 MILES NORTHEAST OF LAKE PARK...OR 12 MILES NORTHWEST OF
  SPIRIT LAKE...AND MOVING NORTHEAST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  HERON LAKE AROUND 535 PM CDT...
  LAKEFIELD AROUND 550 PM CDT...
  SUPERIOR AROUND 555 PM CDT...
  JACKSON AND BERGEN AROUND 615 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4349 9490 4343 9491 4348 9539 4350 9539
      4350 9553 4383 9551 4384 9517 4385 9517
      4385 9485 4380 9484 4351 9485
TIME...MOT...LOC 2215Z 240DEG 12KT 4355 9525
WIND...HAIL 60MPH 1.00IN

$$

CHENARD
2 follow-up statements
422 
WWUS53 KFSD 252237
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
537 PM CDT WED JUL 25 2012

MNC105-252246-
/O.CAN.KFSD.SV.W.0172.000000T0000Z-120725T2315Z/
NOBLES MN-
537 PM CDT WED JUL 25 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN NOBLES COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 4349 9490 4343 9491 4350 9539 4350 9540
      4350 9541 4371 9538 4369 9484 4351 9485
TIME...MOT...LOC 2236Z 282DEG 26KT 4351 9513

$$

IAC059-MNC063-252315-
/O.CON.KFSD.SV.W.0172.000000T0000Z-120725T2315Z/
DICKINSON IA-JACKSON MN-
537 PM CDT WED JUL 25 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
JACKSON AND NORTHERN DICKINSON COUNTIES UNTIL 615 PM CDT...

AT 536 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND 
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 5 MILES 
NORTH OF ORLEANS...OR 6 MILES NORTH OF SPIRIT LAKE...MOVING EAST AT 
30 MPH.

HAIL UP TO GOLF BALL SIZE HAS BEEN REPORTED WITH THIS STORM FROM 
THE PUBLIC.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  JACKSON AROUND 545 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4349 9490 4343 9491 4350 9539 4350 9540
      4350 9541 4371 9538 4369 9484 4351 9485
TIME...MOT...LOC 2236Z 282DEG 26KT 4351 9513
WIND...HAIL 60MPH 1.00IN

$$

CHENARD
835 
WWUS53 KFSD 252254
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
554 PM CDT WED JUL 25 2012

IAC059-MNC063-252303-
/O.CAN.KFSD.SV.W.0172.000000T0000Z-120725T2315Z/
DICKINSON IA-JACKSON MN-
554 PM CDT WED JUL 25 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN JACKSON AND NORTHERN
DICKINSON COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED...HOWEVER DIME 
SIZE HAIL...GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS 
THUNDERSTORM IN JACKSON AND DICKINSON COUNTIES.

LAT...LON 4349 9490 4343 9491 4350 9539 4350 9540
      4350 9541 4371 9538 4369 9484 4351 9485
TIME...MOT...LOC 2253Z 282DEG 26KT 4348 9496

$$

CHENARD

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 25, 5:11 PM CDTSevere Thunderstorm WarningFSDSioux34 min
Jul 25, 5:16 PM CDTSevere Thunderstorm WarningFSDWoodbury29 min
Jul 25, 5:25 PM CDTSevere Thunderstorm WarningFSDCherokee, O'Brien35 min
Jul 25, 5:31 PM CDTSevere Thunderstorm WarningFSDWoodbury59 min
Jul 25, 5:43 PM CDTSevere Thunderstorm WarningFSDWoodbury47 min
Jul 25, 6:03 PM CDTSevere Thunderstorm WarningFSDClay, Dickinson42 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2012Severe Thunderstorm Warnings in Iowa, 2012Every severe thunderstorm warning in 2012

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.