Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 214, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 5, 2012, 12:34 AM CDT for 4 counties in Minnesota. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 5, 2012, 12:34 AM CDT (05:34 UTC)
- Expired
- Jul 5, 2012, 1:15 AM CDT
- In force
- 41 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Chisago County, MN, Isanti County, MN, Kanabec County, MN, Mille Lacs County, MN
The radar
The Minneapolis radar (KMPX), 105 km from the middle of the area, began a volume at 05:37 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.
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 4, 8:59 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 5.6 hours before the alert went out and 106 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
- 2542 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 1972 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 163 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.8
The text
As transmitted, in the capitals the NWS used until 2016.
318
WUUS53 KMPX 050534
SVRMPX
MNC025-059-065-095-050615-
/O.NEW.KMPX.SV.W.0214.120705T0534Z-120705T0615Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1234 AM CDT THU JUL 5 2012
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EXTREME NORTHWESTERN CHISAGO COUNTY IN EAST CENTRAL MINNESOTA...
NORTHERN ISANTI COUNTY IN EAST CENTRAL MINNESOTA...
SOUTHERN KANABEC COUNTY IN EAST CENTRAL MINNESOTA...
SOUTH CENTRAL MILLE LACS COUNTY IN EAST CENTRAL MINNESOTA...
* UNTIL 115 AM CDT
* AT 1229 AM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...
CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS OF 60
MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM QUAMBA
TO LEWIS LAKE TO DALBO...AND MOVING EAST AT 25 MPH.
LOCATIONS IN THE WARNING INCLUDE...
MORA...
OGILVIE...
LEWIS LAKE...
DALBO...
GRASSTON...
BRAHAM...
STANCHFIELD...
GRANDY...
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.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CDT THURSDAY MORNING
FOR EAST CENTRAL MINNESOTA AND NORTHWEST WISCONSIN.
&&
LAT...LON 4587 9313 4574 9314 4574 9307 4573 9306
4557 9317 4573 9369 4580 9350 4588 9337
TIME...MOT...LOC 0533Z 284DEG 20KT 4591 9318 4578 9336
4571 9347
WIND...HAIL 60MPH 1.00IN
$$2 follow-up statements
942
WWUS53 KMPX 050542
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1242 AM CDT THU JUL 5 2012
MNC095-050556-
/O.CAN.KMPX.SV.W.0214.000000T0000Z-120705T0615Z/
MILLE LACS MN-
1242 AM CDT THU JUL 5 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL MILLE LACS
COUNTY IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 4586 9339 4580 9314 4574 9314 4574 9307
4573 9306 4557 9317 4569 9351 4580 9351
4580 9350 4582 9348
TIME...MOT...LOC 0541Z 297DEG 20KT 4583 9325 4575 9335
4569 9344
$$
MNC025-059-065-050615-
/O.CON.KMPX.SV.W.0214.000000T0000Z-120705T0615Z/
CHISAGO MN-ISANTI MN-KANABEC MN-
1242 AM CDT THU JUL 5 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
KANABEC...NORTHERN ISANTI AND EXTREME NORTHWESTERN CHISAGO COUNTIES
UNTIL 115 AM CDT...
AT 1237 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS OF 65 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM MORA TO LEWIS LAKE TO DALBO...MOVING SOUTHEAST AT 25
MPH.
LOCATIONS IMPACTED INCLUDE...
GRASSTON...BRAHAM...STANCHFIELD...GRANDY AND BRUNSWICK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH 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 4586 9339 4580 9314 4574 9314 4574 9307
4573 9306 4557 9317 4569 9351 4580 9351
4580 9350 4582 9348
TIME...MOT...LOC 0541Z 297DEG 20KT 4583 9325 4575 9335
4569 9344
WIND...HAIL 60MPH 1.00IN
$$
CLF113
WWUS53 KMPX 050554
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1254 AM CDT THU JUL 5 2012
MNC025-059-065-050615-
/O.CON.KMPX.SV.W.0214.000000T0000Z-120705T0615Z/
CHISAGO MN-ISANTI MN-KANABEC MN-
1254 AM CDT THU JUL 5 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL
KANABEC...NORTHERN ISANTI AND EXTREME NORTHWESTERN CHISAGO COUNTIES
UNTIL 115 AM CDT...
AT 1250 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS OF 60 MPH.
THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM GRASSTON TO
LEWIS LAKE TO DALBO...MOVING SOUTHEAST AT 25 MPH. DIME SIZE HAIL MAY
ALSO ACCOMPANY THESE DAMAGING WINDS.
LOCATIONS IMPACTED INCLUDE...
BRAHAM...STANCHFIELD AND GRANDY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...HAIL...AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.
&&
LAT...LON 4567 9346 4580 9332 4576 9319 4574 9314
4574 9307 4573 9306 4557 9317
TIME...MOT...LOC 0553Z 297DEG 20KT 4580 9316 4572 9327
4566 9336
WIND...HAIL 60MPH 0.50IN
$$
CLFThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 8:13 PM CDT | Special Weather Statement | MPX | Kanabec | 62 min |
| Jul 4, 8:28 PM CDT | Severe Thunderstorm Warning | MPX | Kanabec, Mille Lacs | 77 min |
| Jul 4, 9:44 PM CDT | Tornado Warning | MPX | Morrison, Todd | 31 min |
| Jul 4, 10:15 PM CDT | Severe Thunderstorm Warning | MPX | Morrison | 15 min |
| Jul 4, 10:17 PM CDT | Special Weather Statement | MPX | Morrison | 28 min |
| Jul 4, 10:57 PM CDT | Special Weather Statement | MPX | Mille Lacs | 48 min |
| Jul 4, 11:46 PM CDT | Special Weather Statement | MPX | Mille Lacs | 29 min |
| Jul 5, 12:04 AM CDT | Severe Thunderstorm Warning | MPX | Kanabec, Mille Lacs | 41 min |
| Jul 5, 1:11 AM CDT | Severe Thunderstorm Warning | MPX | Chisago | 16 min |
| Jul 5, 3:25 AM CDT | Special Weather Statement | MPX | Watonwan | 50 min |
| Jul 5, 4:03 AM CDT | Special Weather Statement | MPX | Watonwan | 42 min |
| Jul 5, 5:07 AM CDT | Special Weather Statement | MPX | Wright | 38 min |
| Jul 5, 6:01 AM CDT | Special Weather Statement | MPX | Carver | 44 min |
| Jul 5, 6:30 AM CDT | Special Weather Statement | MPX | McLeod | 30 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.