Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 112, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 1, 2011, 8:31 PM CDT for 4 counties in Wisconsin; 4 counties in Minnesota. It was in force for 59 min. 2 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 1, 2011, 8:31 PM CDT (01:31 UTC)
- Expired
- Jul 1, 2011, 9:30 PM CDT
- In force
- 59 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 70.0 mph
Counties Anoka County, MN, Chisago County, MN, Isanti County, MN, Washington County, MN, Barron County, WI, Dunn County, WI, Polk County, WI, Saint Croix County, WI
The radar
The Minneapolis radar (KMPX), 107 km from the middle of the area, began a volume at 01:34 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 1, 8:45 PM CDT | TSTM WND DMG | Somerset, WI | COUPLE OF TREES DOWN |
| Jul 1, 9:00 PM CDT | TSTM WND DMG | Balsam Lake, WI | NUMEROUS TREES AND POWER LINES DOWN IN SOUTH AND EAST PORTION OF POLK 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 |
|---|---|---|---|
| Jul 1, 2:08 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 1.5 hours before the alert went out and 109 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
- 4059 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 1509 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 178 m²/s²
- 0-3 km storm-relative helicity
- 202 m²/s²
- Significant tornado parameter
- 2.5
- Supercell composite
- 20.8
The text
As transmitted, in the capitals the NWS used until 2016.
616
WUUS53 KMPX 020131
SVRMPX
MNC003-025-059-163-WIC005-033-095-109-020230-
/O.NEW.KMPX.SV.W.0112.110702T0131Z-110702T0230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
831 PM CDT FRI JUL 1 2011
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN ANOKA COUNTY IN EAST CENTRAL MINNESOTA...
CHISAGO COUNTY IN EAST CENTRAL MINNESOTA...
SOUTHEASTERN ISANTI COUNTY IN EAST CENTRAL MINNESOTA...
NORTHERN WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA...
BARRON COUNTY IN NORTHWEST WISCONSIN...
NORTHERN DUNN COUNTY IN WEST CENTRAL WISCONSIN...
POLK COUNTY IN NORTHWEST WISCONSIN...
NORTHERN ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN...
* UNTIL 930 PM CDT
* AT 830 PM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...
CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THESE
STORMS WERE LOCATED ALONG A LINE EXTENDING FROM HAM LAKE TO
PRESCOTT...AND MOVING EAST AT 55 MPH.
LOCATIONS IN THE WARNING INCLUDE...
FOREST LAKE...
NORTH BRANCH...
NEW RICHMOND...
AMERY...
BALSAM LAKE...
RICE LAKE...
LINO LAKES...
HAM LAKE...
EAST BETHEL...
CEDAR...
ST FRANCIS...
ISANTI...
CENTERVILLE...
MAHTOMEDI...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE WINDS...WHICH CAN UPROOT
TREES...DOWN POWER LINES...AND CAUSE DAMAGE TO WINDOWS. EVACUATE
MOBILE HOMES AS THEY MAY BE OVERTURNED. SEEK SHELTER NOW INSIDE A
STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
&&
LAT...LON 4565 9214 4564 9171 4521 9164 4520 9167
4500 9165 4498 9290 4504 9299 4512 9298
4512 9310 4539 9347 4573 9286 4565 9287
4565 9254 4574 9252 4574 9216
TIME...MOT...LOC 0131Z 250DEG 48KT 4526 9316 4481 9282
WIND...HAIL 70MPH <.75IN
$$
JC2 follow-up statements
480
WWUS53 KMPX 020202
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
902 PM CDT FRI JUL 1 2011
MNC003-059-163-020217-
/O.CAN.KMPX.SV.W.0112.000000T0000Z-110702T0230Z/
ANOKA MN-ISANTI MN-WASHINGTON MN-
902 PM CDT FRI JUL 1 2011
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN WASHINGTON...
SOUTHEASTERN ISANTI AND NORTHEASTERN ANOKA COUNTIES IS CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
WARNED AREA.
LAT...LON 4565 9214 4564 9171 4521 9164 4519 9167
4500 9165 4498 9277 4508 9280 4511 9274
4529 9276 4530 9302 4555 9303 4558 9314
4573 9286 4565 9287 4565 9254 4574 9252
4574 9226 4573 9216
TIME...MOT...LOC 0202Z 248DEG 50KT 4559 9266 4496 9232
$$
MNC025-WIC005-033-095-109-020230-
/O.CON.KMPX.SV.W.0112.000000T0000Z-110702T0230Z/
CHISAGO MN-BARRON WI-DUNN WI-ST. CROIX WI-POLK WI-
902 PM CDT FRI JUL 1 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR POLK...
NORTHERN ST. CROIX...NORTHERN DUNN...BARRON AND CHISAGO COUNTIES
UNTIL 930 PM CDT...
AT 857 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS
OF 70 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
WOLF CREEK TO BALDWIN...MOVING EAST AT 55 MPH.
LOCATIONS IMPACTED INCLUDE...
BALSAM LAKE...AMERY...RICE LAKE...WANDEROOS...CENTURIA...CYLON...
DEER PARK...MILLTOWN...EMERALD...FOREST...LUCK...GLENWOOD CITY...
CLEAR LAKE...FREDERIC AND RANGE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE WINDS...WHICH CAN UPROOT
TREES...DOWN POWER LINES...AND CAUSE DAMAGE TO WINDOWS. EVACUATE
MOBILE HOMES AS THEY MAY BE OVERTURNED. SEEK SHELTER NOW INSIDE A
STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
&&
LAT...LON 4565 9214 4564 9171 4521 9164 4519 9167
4500 9165 4498 9277 4508 9280 4511 9274
4529 9276 4530 9302 4555 9303 4558 9314
4573 9286 4565 9287 4565 9254 4574 9252
4574 9226 4573 9216
TIME...MOT...LOC 0202Z 248DEG 50KT 4559 9266 4496 9232
WIND...HAIL 70MPH <.75IN
$$
JC678
WWUS53 KMPX 020222
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
922 PM CDT FRI JUL 1 2011
MNC025-020237-
/O.CAN.KMPX.SV.W.0112.000000T0000Z-110702T0230Z/
CHISAGO MN-
922 PM CDT FRI JUL 1 2011
...THE SEVERE THUNDERSTORM WARNING FOR CHISAGO COUNTY IS CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
WARNED AREA.
LAT...LON 4565 9214 4564 9170 4521 9164 4520 9167
4500 9166 4499 9238 4565 9257 4565 9254
4573 9254 4574 9252 4574 9216
TIME...MOT...LOC 0222Z 248DEG 50KT 4568 9227 4504 9195
$$
WIC005-033-095-109-020230-
/O.CON.KMPX.SV.W.0112.000000T0000Z-110702T0230Z/
BARRON WI-DUNN WI-ST. CROIX WI-POLK WI-
922 PM CDT FRI JUL 1 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
POLK...NORTHEASTERN ST. CROIX...NORTHERN DUNN AND BARRON COUNTIES
UNTIL 930 PM CDT...
AT 920 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS
OF 70 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
CLAM FALLS TO BOYCEVILLE...MOVING EAST AT 55 MPH.
LOCATIONS IMPACTED INCLUDE...
RICE LAKE...CLAM FALLS...WHEELER...MCKINLEY...PRAIRIE FARM...
COMSTOCK...RIDGELAND...CUMBERLAND...HILLSDALE...BARRONETT...
BARRON...COLFAX...SAND CREEK...CAMERON AND HAUGEN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE WINDS...WHICH CAN UPROOT
TREES...DOWN POWER LINES...AND CAUSE DAMAGE TO WINDOWS. EVACUATE
MOBILE HOMES AS THEY MAY BE OVERTURNED. SEEK SHELTER NOW INSIDE A
STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
&&
LAT...LON 4565 9214 4564 9170 4521 9164 4520 9167
4500 9166 4499 9238 4565 9257 4565 9254
4573 9254 4574 9252 4574 9216
TIME...MOT...LOC 0222Z 248DEG 50KT 4568 9227 4504 9195
WIND...HAIL 70MPH <.75IN
$$
JCThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 7:24 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Polk, Saint Croix | 66 min |
| Jul 1, 8:27 PM CDT | Severe Thunderstorm Warning | MPX | Dunn, Pepin, Pierce, Saint Croix | 63 min |
| Jul 1, 9:30 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Chippewa, Dunn, Eau Claire, Pepin, Rusk | 75 min |
| Jul 1, 7:10 PM CDT | Special Weather Statement | MPX | Chisago | 35 min |
| Jul 1, 7:23 PM CDT | Severe Thunderstorm Warning | MPX | Carver, Le Sueur, McLeod, Nicollet, Scott, Sibley | 37 min |
| Jul 1, 7:30 PM CDT | Areal Flood Warning | MPX | Meeker | 3 hr |
| Jul 1, 7:38 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Faribault, Waseca | 37 min |
| Jul 1, 7:39 PM CDT | Areal Flood Warning | MPX | Benton, Morrison | 3 hr |
| Jul 1, 7:45 PM CDT | Severe Thunderstorm Warning | MPX | Faribault, Martin | 45 min |
| Jul 1, 7:49 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Carver, Dakota, Hennepin, Le Sueur, Ramsey and 4 more | 56 min |
| Jul 1, 7:59 PM CDT | Areal Flood Advisory | MPX | Anoka, Carver, Dakota, Hennepin, Ramsey, Scott and 1 more | 105 min |
| Jul 1, 8:03 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Dakota, Faribault, Freeborn, Goodhue, Le Sueur and 3 more | 57 min |
| Jul 1, 8:59 PM CDT | Severe Thunderstorm Warning | MPX | Faribault, Freeborn, Steele, Waseca | 61 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2011Severe Thunderstorm Warnings in Minnesota, 2011Every severe thunderstorm warning in 2011
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.