Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 260, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 15, 2012, 5:19 PM CDT for Stevens County, Minnesota. It was in force for 41 min. 6 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
- Aug 15, 2012, 5:19 PM CDT (22:19 UTC)
- Expired
- Aug 15, 2012, 6:00 PM CDT
- In force
- 41 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
County Stevens County, MN
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 15, 5:35 PM CDT | HAIL 1.75 | 3 W Donnelly, MN | |
| Aug 15, 5:40 PM CDT | HAIL 1 | Donnelly, MN | |
| Aug 15, 5:45 PM CDT | HAIL 0.88 | 1 Wsw Morris, MN | |
| Aug 15, 5:55 PM CDT | HAIL 1 | Morris, MN | |
| Aug 15, 5:55 PM CDT | HAIL 1.25 | N Morris, MN | |
| Aug 15, 6:06 PM CDT | HAIL 1 | 3 Se Morris, 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 |
|---|---|---|---|
| Aug 15, 3:25 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 10.3 hours before the alert went out and 201 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
- 1017 J/kg
- Mixed-layer CIN
- -204 J/kg
- Mixed-layer LCL
- 1004 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 138 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.4
The text
As transmitted, in the capitals the NWS used until 2016.
595
WUUS53 KMPX 152219
SVRMPX
MNC149-152300-
/O.NEW.KMPX.SV.W.0260.120815T2219Z-120815T2300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
519 PM CDT WED AUG 15 2012
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
STEVENS COUNTY IN WEST CENTRAL MINNESOTA...
* UNTIL 600 PM CDT
* AT 515 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
PRODUCING HALF DOLLAR SIZE HAIL AND DAMAGING WINDS OF 60 MPH. THIS
STORM WAS LOCATED 8 MILES EAST OF COLLIS...OR ABOUT 14 MILES
SOUTHEAST OF WHEATON...AND MOVING EAST AT 30 MPH.
LOCATIONS IN THE WARNING INCLUDE...
MORRIS...
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 4571 9626 4575 9626 4576 9625 4577 9576
4551 9574 4550 9575 4543 9576 4557 9625
4570 9627
TIME...MOT...LOC 2219Z 282DEG 28KT 4568 9623
WIND...HAIL 60MPH 1.25IN
$$3 follow-up statements
198
WWUS53 KMPX 152227
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
527 PM CDT WED AUG 15 2012
MNC149-152300-
/O.CON.KMPX.SV.W.0260.000000T0000Z-120815T2300Z/
STEVENS MN-
527 PM CDT WED AUG 15 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR STEVENS COUNTY
UNTIL 600 PM CDT...
AT 524 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND DAMAGING
WINDS OF 60 MPH. THIS STORM WAS LOCATED 12 MILES EAST OF COLLIS...OR
14 MILES NORTHWEST OF MORRIS...MOVING EAST AT 30 MPH.
LOCATIONS IMPACTED INCLUDE...
MORRIS...ALBERTA...DONNELLY AND HANCOCK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE HAIL...WHICH CAN
SIGNIFICANTLY DAMAGE WINDOWS...SIDING AND VEHICLES. DAMAGING WINDS
ARE ALSO EXPECTED...WHICH CAN UPROOT TREES AND DOWN POWER LINES. SEEK
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE... SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.
&&
LAT...LON 4571 9626 4575 9626 4576 9625 4577 9576
4551 9574 4550 9575 4543 9576 4557 9625
4570 9627
TIME...MOT...LOC 2227Z 282DEG 28KT 4567 9614
WIND...HAIL 60MPH 1.75IN
$$169
WWUS53 KMPX 152235
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
535 PM CDT WED AUG 15 2012
MNC149-152300-
/O.CON.KMPX.SV.W.0260.000000T0000Z-120815T2300Z/
STEVENS MN-
535 PM CDT WED AUG 15 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR STEVENS COUNTY
UNTIL 600 PM CDT...
AT 533 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING LARGE DESTRUCTIVE HAIL UP TO TENNIS
BALL SIZE...AND DAMAGING WINDS OF 60 MPH. THIS STORM WAS LOCATED 10
MILES NORTHWEST OF MORRIS...MOVING EAST AT 30 MPH.
LOCATIONS IMPACTED INCLUDE...
MORRIS...ALBERTA...DONNELLY AND HANCOCK.
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 EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE... SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.
&&
LAT...LON 4568 9621 4576 9617 4577 9576 4551 9574
4543 9576 4557 9625
TIME...MOT...LOC 2235Z 282DEG 28KT 4566 9605
WIND...HAIL 60MPH 2.50IN
$$028
WWUS53 KMPX 152246
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
546 PM CDT WED AUG 15 2012
MNC149-152300-
/O.CON.KMPX.SV.W.0260.000000T0000Z-120815T2300Z/
STEVENS MN-
546 PM CDT WED AUG 15 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR STEVENS COUNTY
UNTIL 600 PM CDT...
AT 543 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING LARGE DESTRUCTIVE HAIL UP TO TENNIS
BALL SIZE...AND DAMAGING WINDS OF 65 MPH. THIS STORM WAS LOCATED
NEAR MORRIS...MOVING EAST AT 30 MPH.
IN ADDITION...AT 540 PM CDT...LAW ENFORCEMENT REPORTED A SHATTERED
WINDSHIELD DUE TO HAIL IN DONNELLY WITH THIS STORM.
LOCATIONS IMPACTED INCLUDE...
MORRIS AND HANCOCK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE HAIL...WHICH CAN
SIGNIFICANTLY DAMAGE WINDOWS...SIDING AND VEHICLES. DAMAGING WINDS
ARE ALSO EXPECTED...WHICH CAN UPROOT TREES AND DOWN POWER LINES. SEEK
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE... SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.
&&
LAT...LON 4567 9614 4577 9607 4577 9576 4551 9574
4543 9576 4556 9616
TIME...MOT...LOC 2245Z 282DEG 28KT 4562 9593
WIND...HAIL 60MPH 2.50IN
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 15, 5:02 PM CDT | Special Weather Statement | MPX | Douglas, Stevens | 73 min |
| Aug 15, 5:48 PM CDT | Severe Thunderstorm Warning | MPX | Pope, Stevens | 56 min |
| Aug 15, 6:01 PM CDT | Severe Thunderstorm Warning | MPX | Stevens, Swift | 59 min |
| Aug 15, 6:36 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Swift | 54 min |
| Aug 15, 6:57 PM CDT | Special Weather Statement | MPX | Todd | 48 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.