Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 382, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Sep 20, 2007, 9:29 PM CDT for Dunn County, Saint Croix County, Wisconsin. It was in force for 61 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
- Sep 20, 2007, 9:29 PM CDT (02:29 UTC)
- Expired
- Sep 20, 2007, 10:30 PM CDT
- In force
- 61 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
Counties Dunn County, WI, Saint Croix County, WI
The radar
The Minneapolis radar (KMPX), 132 km from the middle of the area, began a volume at 02:30 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 |
|---|---|---|---|
| Sep 20, 5:37 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 2.5 hours before the alert went out and 135 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
- 1394 J/kg
- Mixed-layer CIN
- -85 J/kg
- Mixed-layer LCL
- 838 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 192 m²/s²
- 0-3 km storm-relative helicity
- 567 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 24.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KMPX 210229 SVRMPX WIC033-109-210330- /O.NEW.KMPX.SV.W.0382.070921T0229Z-070921T0330Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 929 PM CDT THU SEP 20 2007 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN... DUNN COUNTY IN WEST CENTRAL WISCONSIN... * UNTIL 1030 PM CDT * AT 926 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM... CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 65 MPH. THIS STORM WAS LOCATED 4 MILES SOUTHWEST OF GLENWOOD CITY...OR ABOUT 17 MILES NORTHWEST OF MENOMONIE...AND MOVING NORTHEAST AT 35 MPH. * LOCATIONS IMPACTED INCLUDE... GLENWOOD CITY... BOYCEVILLE... COLFAX... SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM CDT FRIDAY MORNING FOR NORTHWESTERN WISCONSIN. LAT...LON 4521 9169 4496 9167 4490 9225 4510 9227 TIME...MOT...LOC 0229Z 245DEG 34KT 4502 9218 $$ JPR
3 follow-up statements
000
WWUS53 KMPX 210249
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
949 PM CDT THU SEP 20 2007
WIC033-210330-
/O.CON.KMPX.SV.W.0382.000000T0000Z-070921T0330Z/
DUNN WI-
949 PM CDT THU SEP 20 2007
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT
FOR DUNN COUNTY...
AT 944 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM...CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND DAMAGING
WINDS IN EXCESS OF 65 MPH. THIS STORM WAS LOCATED NEAR WHEELER...OR
ABOUT 7 MILES EAST OF BOYCEVILLE...AND MOVING EAST AT 45 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE WHEELER...TAINTER LAKE...
KNAPP...COLFAX AND BOYCEVILLE.
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
LAT...LON 4494 9181 4495 9183 4493 9188 4494 9193
4492 9196 4492 9212 4515 9206 4520 9169
4496 9167
TIME...MOT...LOC 0249Z 252DEG 42KT 4508 9182
$$000
WWUS53 KMPX 210308
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1006 PM CDT THU SEP 20 2007
WIC033-210330-
/O.CON.KMPX.SV.W.0382.000000T0000Z-070921T0330Z/
DUNN WI-
1006 PM CDT THU SEP 20 2007
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT
FOR DUNN COUNTY...
AT 958 PM CDT...A 57 MPH WIND GUST OCCURRED IN CEDAR FALLS...WHICH
IS ABOUT 2 MILES NORTH OF MENOMONIE.
AT 1003 PM CDT... THE SEVERE STORM WAS LOCATED NEAR COLFAX...
AND MOVING EAST AT 45 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE TAINTER LAKE AND COLFAX.
LAT...LON 4494 9179 4495 9183 4494 9184 4494 9187
4518 9187 4518 9180 4520 9177 4519 9169
4501 9167 4496 9169
TIME...MOT...LOC 0306Z 252DEG 42KT 4504 9166
$$000
WWUS53 KMPX 210322
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1021 PM CDT THU SEP 20 2007
WIC033-210331-
/O.EXP.KMPX.SV.W.0382.000000T0000Z-070921T0330Z/
DUNN WI-
1021 PM CDT THU SEP 20 2007
...THE SEVERE THUNDERSTORM WARNING FOR DUNN COUNTY EXPIRES AT 1030 PM
CDT...
SEVERE STORMS HAVE MOVED OUT OF COUNTY. HOWEVER...MORE THUNDERSTORMS
WERE WEST OF THE AREA. REMAIN ALERT FOR POSSIBLE ADDITIONAL WARNINGS.
LAT...LON 4494 9179 4495 9183 4494 9184 4494 9187
4518 9187 4518 9180 4520 9177 4519 9169
4501 9167 4496 9169
TIME...MOT...LOC 0321Z 252DEG 42KT 4509 9142
$$
JPRThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 8:51 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Dunn, Eau Claire | 21 min |
| Sep 20, 9:44 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Polk | 31 min |
| Sep 20, 10:11 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa | 64 min |
| Sep 20, 10:16 PM CDT | Severe Thunderstorm Warning | MPX | Barron | 44 min |
| Sep 21, 5:54 AM CDT | Severe Thunderstorm Warning | MPX | Polk | 36 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2007Every severe thunderstorm warning in 2007
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.