Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 67, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at Jul 18, 2012, 1:29 PM CDT for Mower County, Minnesota. It was in force for 61 min. 4 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
- Jul 18, 2012, 1:29 PM CDT (18:29 UTC)
- Expired
- Jul 18, 2012, 2:30 PM CDT
- In force
- 61 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
County Mower County, MN
The radar
The La Crosse radar (KARX), 119 km from the middle of the area, began a volume at 18:29 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 |
|---|---|---|---|
| Jul 18, 1:51 PM CDT | HAIL 0.88 | 2 Ne Dexter, MN | |
| Jul 18, 1:58 PM CDT | TSTM WND GST 50 | 1 W Grand Meadow, MN | |
| Jul 18, 2:27 PM CDT | TSTM WND GST 50 | 1 S Racine, MN | |
| Jul 18, 2:27 PM CDT | HAIL 0.75 | 1 S Racine, MN | DIME SIZED HAIL |
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 |
|---|---|---|---|
| Jul 18, 12:58 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 6.5 hours before the alert went out and 139 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.
- Mixed-layer CAPE
- 2062 J/kg
- Mixed-layer CIN
- -144 J/kg
- Mixed-layer LCL
- 716 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 174 m²/s²
- 0-3 km storm-relative helicity
- 185 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 12.6
The text
As transmitted, in the capitals the NWS used until 2016.
101
WUUS53 KARX 181829
SVRARX
MNC099-181930-
/O.NEW.KARX.SV.W.0067.120718T1829Z-120718T1930Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
129 PM CDT WED JUL 18 2012
THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEAST MOWER COUNTY IN SOUTHEAST MINNESOTA...
* UNTIL 230 PM CDT
* AT 124 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A SEVERE THUNDERSTORM LOCATED NEAR SARGEANT...OR 14 MILES
NORTHEAST OF AUSTIN...MOVING SOUTHEAST AT 20 MPH. THIS STORM HAS A
HISTORY OF LARGE HAIL AND HEAVY RAIN. THIS WARNING ALSO EXTENDS
THE PREVIOUS SEVERE THUNDERSTORM WARNING FOR MOWER COUNTY.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
I 90 EXIT 187 AROUND 140 PM...
I 90 EXIT 189 AROUND 145 PM...
DEXTER AROUND 145 PM...
ELKTON AND GRAND MEADOW AROUND 150 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 4385 9280 4385 9269 4383 9268 4384 9255
4383 9245 4356 9245 4369 9293
TIME...MOT...LOC 1827Z 300DEG 17KT 4381 9275
WIND...HAIL 60MPH 1.50IN
$$
SHEA4 follow-up statements
891
WWUS53 KARX 181842
SVSARX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
142 PM CDT WED JUL 18 2012
MNC099-181930-
/O.CON.KARX.SV.W.0067.000000T0000Z-120718T1930Z/
MOWER MN-
142 PM CDT WED JUL 18 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
MOWER COUNTY UNTIL 230 PM CDT...
AT 138 PM...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM LOCATED
JUST EAST OF SARGEANT...OR 16 MILES NORTHEAST OF AUSTIN...MOVING
SOUTHEAST AT 20 MPH. THIS STORM CAN PRODUCE QUARTER SIZE HAIL AND
DAMAGING WINDS IN EXCESS OF 60 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
GRAND MEADOW AROUND 200 PM...
RACINE AROUND 205 PM...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
STAY AWAY FROM WINDOWS WHEN LARGE HAIL STARTS FALLING.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 8 PM.
&&
LAT...LON 4385 9280 4385 9269 4383 9268 4384 9254
4383 9245 4356 9245 4368 9286
TIME...MOT...LOC 1841Z 301DEG 17KT 4377 9267
WIND...HAIL 60MPH 1.00IN
$$275
WWUS53 KARX 181855
SVSARX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
155 PM CDT WED JUL 18 2012
MNC099-181930-
/O.CON.KARX.SV.W.0067.000000T0000Z-120718T1930Z/
MOWER MN-
155 PM CDT WED JUL 18 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
MOWER COUNTY UNTIL 230 PM CDT...
TRAINED WEATHER SPOTTERS REPORTED NICKEL SIZE HAIL ABOUT 2 MILES
NORTHEAST OF DEXTER MINNESOTA AROUND 150 PM.
THIS STORMS ARE MOVING TOWARDS THE COMMUNITIES OF RACINE AND GRAND
MEADOW AND CURRENTLY IN A WEAKENING STAGE. THERE COULD STILL BE SOME
LARGE HAIL THOUGH...IN ADDITION TO GUSTY WINDS...HEAVY RAIN AND
LIGHTNING.
MOVE INDOORS AS THESE STORMS APPROACH. IF YOU LIVE IN SPRING VALLEY
OR OSTRANDER AREAS...THESE STORMS WILL ALSO IMPACT YOU BUT MAY BE
WEAKER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
STAY INDOORS UNTIL STORMS PASS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 8 PM.
&&
LAT...LON 4385 9280 4385 9269 4383 9268 4384 9254
4383 9245 4356 9245 4368 9286
TIME...MOT...LOC 1853Z 301DEG 17KT 4374 9260
WIND...HAIL 60MPH 1.00IN
$$
SHEA710
WWUS53 KARX 181908
SVSARX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
208 PM CDT WED JUL 18 2012
MNC099-181930-
/O.CON.KARX.SV.W.0067.000000T0000Z-120718T1930Z/
MOWER MN-
208 PM CDT WED JUL 18 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
MOWER COUNTY UNTIL 230 PM CDT...
THE MEDIA AND WEATHER SPOTTERS REPORTED WINDS AROUND 50 MPH IN GRAND
MEADOW. THIS STORM WAS MOVING SOUTHEAST AND WILL CONTINUE TO IMPACT
GRAND MEADOW AND RACINE OVER THE NEXT 15 MINUTES.
PENNY SIZED HAIL AND ADDITIONAL GUSTY WINDS ARE EXPECTED...
IN ADDITION TO TORRENTIAL RAIN AND LIGHTNING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.
A SEVERE THUNDERSTORM WATCH IS ALSO IN EFFECT.
&&
LAT...LON 4384 9269 4385 9269 4384 9269 4383 9268
4384 9256 4383 9245 4356 9245 4370 9272
TIME...MOT...LOC 1907Z 301DEG 17KT 4372 9256
WIND...HAIL 60MPH 0.75IN
$$
SHEA367
WWUS53 KARX 181927
SVSARX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
227 PM CDT WED JUL 18 2012
MNC099-181936-
/O.EXP.KARX.SV.W.0067.000000T0000Z-120718T1930Z/
MOWER MN-
227 PM CDT WED JUL 18 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MOWER COUNTY WILL
EXPIRE AT 230 PM CDT...
THE STORM WHICH PROMPTED THE WARNING CONTINUES TO MOVE INTO WESTERN
FILLMORE COUNTY AND OUT OF THE RACINE AND GRAND MEADOW AREAS. HEAVY
RAIN AND LIGHTNING REMAIN A THREAT THOUGH...AND THERE ARE ADDITIONAL
STORMS MOVING INTO THE LYLE AND AUSTIN AREAS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM.
LAT...LON 4384 9269 4385 9269 4384 9269 4383 9268
4384 9256 4383 9245 4356 9245 4370 9272
TIME...MOT...LOC 1926Z 285DEG 20KT 4373 9243
$$
SHEAThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 12:40 PM CDT | Severe Thunderstorm Warning | ARX | Dodge, Mower | 50 min |
| Jul 18, 2:24 PM CDT | Severe Thunderstorm Warning | ARX | Fillmore | 51 min |
| Jul 18, 3:19 PM CDT | Severe Thunderstorm Warning | ARX | Fillmore | 41 min |
| Jul 18, 3:57 PM CDT | Severe Thunderstorm Warning | ARX | Houston | 39 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 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; radar from the NEXRAD Level II archive.