Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 5, NWS La Crosse, WI

May 2, 2012Dodge County, Minnesota

NWS La Crosse, WI issued this severe thunderstorm warning at May 2, 2012, 6:47 PM CDT for Dodge County, Minnesota. It was in force for 28 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: May 2, 2012, 6:47 PM CDT (23:47 UTC)
Expired: May 2, 2012, 7:15 PM CDT
In force: 28 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Dodge County, MN

The radar

The Minneapolis radar (KMPX), 92 km from the middle of the area, began a volume at 23:47 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

Time	Report	Where	Remark
May 2, 7:00 PM CDT	HAIL 0.88	6 Wnw West Concord, MN	MULTIPLE REPORTS OF PEA TO NICKEL SIZE HAIL COVERING THE GROUND ACROSS FAR NORTHWEST DODGE COUNTY.

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.

Issued	Product	Office	Lasted
May 2, 5:25 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.8 hours before the alert went out and 93 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: 4 J/kg
Mixed-layer CIN: -280 J/kg
Mixed-layer LCL: 847 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 144 m²/s²
0-3 km storm-relative helicity: 109 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

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

646 
WUUS53 KARX 022347
SVRARX
MNC039-030015-
/O.NEW.KARX.SV.W.0005.120502T2347Z-120503T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
647 PM CDT WED MAY 2 2012

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN DODGE COUNTY IN SOUTHEAST MINNESOTA...

* UNTIL 715 PM CDT

* AT 645 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM LOCATED NEAR COUNTY ROADS 1 AND 24...OR 12
  MILES NORTHWEST OF DODGE CENTER...MOVING NORTHEAST AT 35 MPH. THIS
  STORM CAN PRODUCE QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF
  60 MPH.  

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WEST CONCORD AROUND 655 PM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DAMAGING WINDS. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE
AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 4408 9305 4419 9305 4420 9304 4420 9286
      4420 9284 4419 9284 4405 9304 4405 9306
      4407 9306
TIME...MOT...LOC 2348Z 228DEG 31KT 4416 9301
WIND...HAIL 60MPH 1.00IN

$$

RRS

2 follow-up statements

082 
WWUS53 KARX 030001
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
701 PM CDT WED MAY 2 2012

MNC039-030015-
/O.CON.KARX.SV.W.0005.000000T0000Z-120503T0015Z/
DODGE MN-
701 PM CDT WED MAY 2 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
DODGE COUNTY UNTIL 715 PM CDT...

AT 659 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM LOCATED 7 MILES NORTHEAST OF COUNTY ROADS 1 AND
24...OR 13 MILES NORTHWEST OF MANTORVILLE...MOVING NORTHEAST AT 35
MPH. THIS STORM CAN PRODUCE QUARTER SIZE HAIL AND DAMAGING WINDS IN
EXCESS OF 60 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DAMAGING WINDS. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE
AND STAY AWAY FROM WINDOWS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM WEDNESDAY
EVENING FOR SOUTHEAST MINNESOTA.

&&

LAT...LON 4412 9303 4419 9305 4420 9304 4420 9284
      4419 9284
TIME...MOT...LOC 0002Z 228DEG 31KT 4424 9288
WIND...HAIL 60MPH 1.00IN

$$

RRS

945 
WWUS53 KARX 030015
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
715 PM CDT WED MAY 2 2012

MNC039-030025-
/O.EXP.KARX.SV.W.0005.000000T0000Z-120503T0015Z/
DODGE MN-
715 PM CDT WED MAY 2 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN DODGE COUNTY HAS
EXPIRED...

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT
WEDNESDAY EVENING FOR SOUTHEAST MINNESOTA.

LAT...LON 4412 9303 4419 9305 4420 9304 4420 9284
      4419 9284
TIME...MOT...LOC 0001Z 228DEG 31KT 4423 9289

$$

RRS

Nearby

Severe Thunderstorm Warnings in Minnesota, 2012 Every 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; radar from the NEXRAD Level II archive.