Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 121, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at Sep 5, 2012, 1:28 AM CDT for Houston County, Wabasha County, Winona County, Minnesota; Allamakee County, Iowa. It was in force for 32 min. 3 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
- Sep 5, 2012, 1:28 AM CDT (06:28 UTC)
- Expired
- Sep 5, 2012, 2:00 AM CDT
- In force
- 32 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Hail
- 0.5 in
- Wind
- 70.0 mph
Counties Allamakee County, IA, Houston County, MN, Wabasha County, MN, Winona County, MN
The radar
The La Crosse radar (KARX), 38 km from the middle of the area, began a volume at 06:28 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 |
|---|---|---|---|
| Sep 5, 1:30 AM CDT | TSTM WND DMG | Caledonia, MN | 80 FOOT TALL BURR OAK TREE FELL ON A GARAGE AND 4 VEHICLES NEAR 1ST AND MAIN ST. RELAYED BY WKBT. |
| Sep 5, 1:35 AM CDT | TSTM WND GST 50 | Plainview, MN | |
| Sep 5, 2:00 AM CDT | TSTM WND DMG | Victory, WI | LARGE TREES DOWN IN FAR WEST END OF 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 |
|---|---|---|---|
| Sep 4, 11:16 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 6.5 hours before the alert went out and 193 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3109 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
416
WUUS53 KARX 050628
SVRARX
IAC005-MNC055-157-169-050700-
/O.NEW.KARX.SV.W.0121.120905T0628Z-120905T0700Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
128 AM CDT WED SEP 5 2012
THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
ALLAMAKEE COUNTY IN NORTHEAST IOWA...
HOUSTON COUNTY IN SOUTHEAST MINNESOTA...
SOUTHEASTERN WABASHA COUNTY IN SOUTHEAST MINNESOTA...
WINONA COUNTY IN SOUTHEAST MINNESOTA...
* UNTIL 200 AM CDT
* AT 128 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SEVERE THUNDERSTORMS ROUGHLY ALONG A LINE EXTENDING FROM PLAINVIEW
TO RUSHFORD TO SPRING GROVE TO WEST UNION...MOVING EAST AT 50 MPH.
THESE STORMS CAN PRODUCE DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.
* THE SEVERE THUNDERSTORMS WILL BE NEAR...
STOCKTON AND HOUSTON AROUND 135 AM...
CALEDONIA AND ROLLINGSTONE AROUND 140 AM...
WAUKON AND WINONA AROUND 145 AM...
LA CRESCENT AND NEW ALBIN AROUND 150 AM...
LANSING AND HARPERS FERRY AROUND 200 AM...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THESE
STORMS...PREPARE IMMEDIATELY FOR DESTRUCTIVE WINDS...WHICH CAN UPROOT
TREES...DOWN POWER LINES...AND CAUSE DAMAGE TO ROOFS AND WINDOWS.
EVACUATE MOBILE HOMES AS THEY MAY BE OVERTURNED. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
&&
LAT...LON 4433 9237 4434 9194 4421 9188 4403 9158
4401 9145 4389 9132 4377 9125 4366 9127
4341 9120 4337 9122 4326 9106 4310 9118
4309 9160 4350 9161 4351 9173 4385 9174
4385 9191 4403 9208 4411 9208 4411 9215
TIME...MOT...LOC 0629Z 270DEG 44KT 4428 9222 4386 9167
4356 9167 4297 9178
WIND...HAIL 70MPH <.50IN
$$
BOYNE2 follow-up statements
910
WWUS53 KARX 050651
SVSARX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
151 AM CDT WED SEP 5 2012
IAC005-MNC157-050701-
/O.CAN.KARX.SV.W.0121.000000T0000Z-120905T0700Z/
ALLAMAKEE IA-WABASHA MN-
151 AM CDT WED SEP 5 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WABASHA AND
ALLAMAKEE COUNTIES IS CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
WARNED AREA.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM CDT
WEDNESDAY MORNING FOR NORTHEASTERN IOWA AND SOUTHEAST MINNESOTA AND
SOUTHWESTERN WISCONSIN.
LAT...LON 4419 9189 4419 9184 4403 9158 4400 9144
4389 9132 4377 9125 4366 9127 4350 9123
4351 9173 4384 9173 4403 9195
TIME...MOT...LOC 0651Z 270DEG 44KT 4417 9173 4385 9130
4352 9132
$$
MNC055-169-050700-
/O.CON.KARX.SV.W.0121.000000T0000Z-120905T0700Z/
HOUSTON MN-WINONA MN-
151 AM CDT WED SEP 5 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WINONA AND
HOUSTON COUNTIES UNTIL 200 AM CDT...
AT 146 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WERE ROUGHLY ALONG A LINE EXTENDING FROM BUFFALO TO
DAKOTA TO NEW ALBIN...MOVING EAST AT 50 MPH. THESE STORMS CAN PRODUCE
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THESE
STORMS...PREPARE IMMEDIATELY FOR DESTRUCTIVE WINDS...WHICH CAN UPROOT
TREES...DOWN POWER LINES...AND CAUSE DAMAGE TO ROOFS AND WINDOWS.
EVACUATE MOBILE HOMES AS THEY MAY BE OVERTURNED. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM WEDNESDAY
MORNING FOR NORTHEASTERN IOWA AND SOUTHEAST MINNESOTA AND
SOUTHWESTERN WISCONSIN.
&&
LAT...LON 4419 9189 4419 9184 4403 9158 4400 9144
4389 9132 4377 9125 4366 9127 4350 9123
4351 9173 4384 9173 4403 9195
TIME...MOT...LOC 0651Z 270DEG 44KT 4417 9173 4385 9130
4352 9132
WIND...HAIL 70MPH <.50IN
$$
BOYNE295
WWUS53 KARX 050701
SVSARX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
201 AM CDT WED SEP 5 2012
MNC055-169-050711-
/O.EXP.KARX.SV.W.0121.000000T0000Z-120905T0700Z/
HOUSTON MN-WINONA MN-
201 AM CDT WED SEP 5 2012
...THE SEVERE THUNDERSTORM WARNING FOR WINONA AND HOUSTON COUNTIES
HAS EXPIRED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
WARNED AREA.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM CDT
WEDNESDAY MORNING FOR NORTHEASTERN IOWA AND SOUTHEAST MINNESOTA AND
SOUTHWESTERN WISCONSIN.
LAT...LON 4419 9189 4419 9184 4403 9158 4400 9144
4389 9132 4377 9125 4366 9127 4350 9123
4351 9173 4384 9173 4403 9195
TIME...MOT...LOC 0651Z 270DEG 44KT 4417 9173 4384 9130
4351 9132
$$
BOYNEThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 12:12 AM CDT | Severe Thunderstorm Warning | ARX | Mower | 63 min |
| Sep 5, 12:31 AM CDT | Severe Thunderstorm Warning | ARX | Fillmore | 44 min |
| Sep 5, 12:51 AM CDT | Severe Thunderstorm Warning | ARX | Dodge, Olmsted, Wabasha | 24 min |
| Sep 5, 1:06 AM CDT | Severe Thunderstorm Warning | ARX | Fillmore, Olmsted, Wabasha, Winona | 24 min |
| Sep 4, 7:06 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee | 24 min |
| Sep 4, 7:35 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 70 min |
| Sep 4, 8:09 PM CDT | Flash Flood Warning | ARX | Allamakee, Clayton | 6 hr |
| Sep 4, 10:10 PM CDT | Severe Thunderstorm Warning | ARX | Clayton, Fayette | 65 min |
| Sep 4, 10:42 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee, Winneshiek | 33 min |
| Sep 4, 11:09 PM CDT | Flash Flood Warning | ARX | Allamakee, Winneshiek | 5 hr |
| Sep 4, 11:14 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 46 min |
| Sep 4, 11:36 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee, Clayton, Fayette, Winneshiek | 47 min |
| Sep 4, 11:59 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 61 min |
| Sep 5, 1:51 AM CDT | Flash Flood Warning | ARX | Clayton, Fayette | 3 hr |
| Sep 5, 1:59 AM CDT | Flash Flood Warning | ARX | Allamakee, Clayton | 3 hr |
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; radar from the NEXRAD Level II archive.