Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 28, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at May 2, 2012, 6:58 PM CDT for 4 counties in Minnesota. It was in force for 47 min. 11 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
- May 2, 2012, 6:58 PM CDT (23:58 UTC)
- Expired
- May 2, 2012, 7:45 PM CDT
- In force
- 47 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Le Sueur County, MN, Rice County, MN, Steele County, MN, Waseca County, MN
The radar
The Minneapolis radar (KMPX), 75 km from the middle of the area, began a volume at 00:00 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, 7:08 PM CDT | HAIL 1.5 | 1 S Waterville, MN | |
| May 2, 7:09 PM CDT | HAIL 1 | 1 E Waterville, MN | |
| May 2, 7:10 PM CDT | HAIL 1.25 | 1 E Waterville, MN | |
| May 2, 7:10 PM CDT | HAIL 2 | 1 E Waterville, MN | |
| May 2, 7:15 PM CDT | TSTM WND GST 51 | Morristown, MN | MEASURE AT EOC |
| May 2, 7:15 PM CDT | TSTM WND GST 57 | 1 Nne Waseca, MN | |
| May 2, 7:15 PM CDT | HAIL 1 | Morristown, MN | MEASURED AT EOC |
| May 2, 7:19 PM CDT | HAIL 1 | Waseca, MN | |
| May 2, 7:25 PM CDT | HAIL 1 | 3 Nw Medford, MN | |
| May 2, 7:29 PM CDT | HAIL 1 | Warsaw, MN | |
| May 2, 7:30 PM CDT | HAIL 1 | 3 Nw Medford, MN |
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, 12.0 hours before the alert went out and 76 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
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
684
WUUS53 KMPX 022358
SVRMPX
MNC079-131-147-161-030045-
/O.NEW.KMPX.SV.W.0028.120502T2358Z-120503T0045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
658 PM CDT WED MAY 2 2012
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN LE SUEUR COUNTY IN SOUTH CENTRAL MINNESOTA...
SOUTHWESTERN RICE COUNTY IN SOUTH CENTRAL MINNESOTA...
NORTHWESTERN STEELE COUNTY IN SOUTH CENTRAL MINNESOTA...
NORTHERN WASECA COUNTY IN SOUTH CENTRAL MINNESOTA...
* UNTIL 745 PM CDT
* AT 656 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS OF 60 MPH. THIS
STORM WAS LOCATED NEAR WATERVILLE...OR ABOUT 8 MILES NORTHWEST OF
WASECA...AND MOVING EAST AT 25 MPH.
LOCATIONS IN THE WARNING INCLUDE...
WASECA...
WATERVILLE...
MORRISTOWN...
WARSAW...
DEERFIELD...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS IN EXCESS OF 60 MPH AND LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
&&
LAT...LON 4428 9335 4422 9314 4417 9328 4403 9318
4407 9369 4427 9363
TIME...MOT...LOC 2358Z 277DEG 24KT 4417 9358
WIND...HAIL 60MPH 1.00IN
$$3 follow-up statements
133
WWUS53 KMPX 030018
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
718 PM CDT WED MAY 2 2012
MNC079-131-147-161-030045-
/O.CON.KMPX.SV.W.0028.000000T0000Z-120503T0045Z/
LE SUEUR MN-RICE MN-STEELE MN-WASECA MN-
718 PM CDT WED MAY 2 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
WASECA...NORTHWESTERN STEELE...SOUTHWESTERN RICE AND SOUTHEASTERN LE
SUEUR COUNTIES UNTIL 745 PM CDT...
AT 714 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE
THUNDERSTORM PRODUCING HALF DOLLAR SIZE HAIL...AND DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR MORRISTOWN...OR 9
MILES NORTH OF WASECA...MOVING EAST AT 30 MPH.
LOCATIONS IMPACTED INCLUDE...
WARSAW.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DESTRUCTIVE HAIL...WHICH CAN SIGNIFICANTLY DAMAGE WINDOWS...SIDING
AND VEHICLES. DAMAGING WINDS ARE ALSO EXPECTED...WHICH CAN UPROOT
TREES AND DOWN POWER LINES. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.
THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!
&&
LAT...LON 4428 9335 4422 9314 4417 9328 4416 9366
4427 9363
TIME...MOT...LOC 0018Z 277DEG 24KT 4421 9342
WIND...HAIL 60MPH 1.75IN
$$
JRB369
WWUS53 KMPX 030021
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
721 PM CDT WED MAY 2 2012
MNC079-131-147-161-030045-
/O.CON.KMPX.SV.W.0028.000000T0000Z-120503T0045Z/
LE SUEUR MN-RICE MN-STEELE MN-WASECA MN-
721 PM CDT WED MAY 2 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
WASECA...NORTHWESTERN STEELE...SOUTHWESTERN RICE AND SOUTHEASTERN LE
SUEUR COUNTIES UNTIL 745 PM CDT...
AT 719 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE
THUNDERSTORM PRODUCING GOLF BALL SIZE HAIL...AND DAMAGING WINDS IN
EXCESS OF 60 MPH NEAR MORRISTOWN. THIS STORM WAS LOCATED NEAR
MORRISTOWN...OR 9 MILES NORTHEAST OF WASECA...MOVING EAST AT 30 MPH.
LOCATIONS IMPACTED INCLUDE...
MAINLY RURAL AREAS OF EXTREME SOUTHERN RICE AND NORTHWESTERN STEELE
COUNTIES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DESTRUCTIVE HAIL...WHICH CAN SIGNIFICANTLY DAMAGE WINDOWS...SIDING
AND VEHICLES. DAMAGING WINDS ARE ALSO EXPECTED...WHICH CAN UPROOT
TREES AND DOWN POWER LINES. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.
THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!
&&
LAT...LON 4416 9358 4426 9359 4428 9335 4422 9314
4417 9328
TIME...MOT...LOC 0021Z 277DEG 24KT 4420 9339
WIND...HAIL 60MPH 1.75IN
$$
JRB948
WWUS53 KMPX 030035
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
735 PM CDT WED MAY 2 2012
MNC079-161-030049-
/O.CAN.KMPX.SV.W.0028.000000T0000Z-120503T0045Z/
LE SUEUR MN-WASECA MN-
735 PM CDT WED MAY 2 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WASECA AND
SOUTHEASTERN LE SUEUR COUNTIES IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HASMOVED OUT OF THE WARNED AREA.
LAT...LON 4420 9341 4420 9347 4427 9347 4428 9335
4422 9314 4417 9328 4417 9341
TIME...MOT...LOC 0034Z 277DEG 24KT 4418 9327
$$
MNC131-147-030045-
/O.CON.KMPX.SV.W.0028.000000T0000Z-120503T0045Z/
RICE MN-STEELE MN-
735 PM CDT WED MAY 2 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
STEELE AND SOUTH CENTRAL RICE COUNTIES UNTIL 745 PM CDT...
AT 733 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE
THUNDERSTORM PRODUCING GOLF BALL SIZE HAIL...AND DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR MEDFORD...OR 7 MILES
NORTHWEST OF OWATONNA...MOVING EAST AT 30 MPH.
LOCATIONS IMPACTED INCLUDE...
MAINLY RURAL AREAS OF EXTREME NORTHERN STEELE AND EXTREME SOUTHERN
RICE COUNTIES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE HAIL...WHICH CAN
SIGNIFICANTLY DAMAGE WINDOWS...SIDING AND VEHICLES. DAMAGING WINDS
ARE ALSO EXPECTED...WHICH CAN UPROOT TREES AND DOWN POWER LINES. SEEK
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL AND IS SHOWING
ROTATION. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY
FROM WINDOWS!
&&
LAT...LON 4420 9341 4420 9347 4427 9347 4428 9335
4422 9314 4417 9328 4417 9341
TIME...MOT...LOC 0034Z 277DEG 24KT 4418 9327
WIND...HAIL 60MPH 1.75IN
$$
JRBThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 7:08 PM CDT | Severe Thunderstorm Warning | MPX | Sherburne, Stearns, Wright | 52 min |
| May 1, 7:23 PM CDT | Special Weather Statement | MPX | Isanti, Kanabec | 52 min |
| May 1, 7:24 PM CDT | Severe Thunderstorm Warning | MPX | Carver, McLeod, Sibley | 51 min |
| May 1, 7:30 PM CDT | Severe Thunderstorm Warning | MPX | Chisago, Isanti, Kanabec | 45 min |
| May 1, 7:55 PM CDT | Special Weather Statement | MPX | Anoka | 50 min |
| May 1, 8:08 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Chisago, Isanti | 37 min |
| May 1, 8:09 PM CDT | Severe Thunderstorm Warning | MPX | Brown, Nicollet, Sibley | 66 min |
| May 1, 8:13 PM CDT | Severe Thunderstorm Warning | MPX | Brown, Redwood | 25 min |
| May 1, 9:24 PM CDT | Special Weather Statement | MPX | Nicollet, Sibley | 51 min |
| May 1, 10:11 PM CDT | Special Weather Statement | MPX | Blue Earth, Faribault, Le Sueur, Martin, Nicollet | 49 min |
| May 1, 11:12 PM CDT | Special Weather Statement | MPX | Freeborn, Rice, Steele, Waseca | 48 min |
| May 2, 5:22 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Brown, Watonwan | 53 min |
| May 2, 5:50 PM CDT | Tornado Warning | MPX | Blue Earth, Brown, Nicollet, Watonwan | 40 min |
| May 2, 6:20 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Le Sueur, Nicollet, Waseca | 55 min |
| May 2, 6:45 PM CDT | Severe Thunderstorm Warning | MPX | Goodhue, Rice, Steele | 60 min |
| May 2, 6:45 PM CDT | Severe Thunderstorm Warning | MPX | Brown, Redwood | 60 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.