Alert archive / Wisconsin / Tornado Warnings in 2009
Tornado Warning 50, NWS Twin Cities, MN
NWS Twin Cities, MN issued this tornado warning at Aug 19, 2009, 5:13 PM CDT for 4 counties in Wisconsin. It was in force for 47 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
- Aug 19, 2009, 5:13 PM CDT (22:13 UTC)
- Expired
- Aug 19, 2009, 6:00 PM CDT
- In force
- 47 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
Counties Barron County, WI, Dunn County, WI, Polk County, WI, Saint Croix County, WI
The radar
The Minneapolis radar (KMPX), 131 km from the middle of the area, began a volume at 22:15 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 |
|---|---|---|---|
| Aug 19, 4:49 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 10.2 hours before the alert went out and 133 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
- 368 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 615 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 121 m²/s²
- 0-3 km storm-relative helicity
- 68 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 3.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WFUS53 KMPX 192213
TORMPX
WIC005-033-095-109-192300-
/O.NEW.KMPX.TO.W.0050.090819T2213Z-090819T2300Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
513 PM CDT WED AUG 19 2009
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* TORNADO WARNING FOR...
EASTERN POLK COUNTY IN NORTHWEST WISCONSIN...
WESTERN BARRON COUNTY IN NORTHWEST WISCONSIN...
NORTHEASTERN ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN...
NORTHWESTERN DUNN COUNTY IN WEST CENTRAL WISCONSIN...
* UNTIL 600 PM CDT
* AT 513 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A
TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS NEAR FOREST...OR
OVER FOREST...AND MOVING NORTH AT 35 MPH.
* LOCATIONS IN THE WARNING INCLUDE...
CONNORSVILLE...
CLEAR LAKE...
RIDGELAND...
PRAIRIE FARM...
RANGE...
TURTLE LAKE...
HILLSDALE...
BARRON...
COMSTOCK...
CUMBERLAND...
MCKINLEY...
BARRONETT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WHEN A TORNADO WARNING IS ISSUED BASED ON RADAR...IT MEANS THAT
STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY ALREADY
BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY.
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT THURSDAY MORNING
FOR NORTHWESTERN WISCONSIN.
&&
LAT...LON 4571 9214 4565 9215 4565 9200 4555 9181
4502 9187 4502 9217 4509 9241 4522 9232
4573 9238 4573 9217
TIME...MOT...LOC 2213Z 202DEG 30KT 4514 9224
$$2 follow-up statements
000
WWUS53 KMPX 192235
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
535 PM CDT WED AUG 19 2009
WIC109-192245-
/O.CAN.KMPX.TO.W.0050.000000T0000Z-090819T2300Z/
ST. CROIX WI-
535 PM CDT WED AUG 19 2009
...THE TORNADO WARNING FOR NORTHEASTERN ST. CROIX COUNTY IS
CANCELLED...
RADAR INDICATED THAT THE SEVERE STORM HAD MOVED OUT OF THE WARNED
AREA. THEREFORE...THE TORNADO WARNING HAS BEEN CANCELLED.
A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT THURSDAY MORNING
FOR NORTHWESTERN WISCONSIN.
LAT...LON 4571 9214 4565 9215 4565 9200 4555 9181
4502 9188 4515 9216 4521 9216 4528 9225
4573 9238 4573 9217
TIME...MOT...LOC 2235Z 204DEG 28KT 4524 9213
$$
WIC005-033-095-192300-
/O.CON.KMPX.TO.W.0050.000000T0000Z-090819T2300Z/
POLK WI-BARRON WI-DUNN WI-
535 PM CDT WED AUG 19 2009
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR
NORTHWESTERN DUNN...WESTERN BARRON AND EASTERN POLK COUNTIES...
AT 535 PM CDT...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING A TORNADO. THE MOST DANGEROUS PART OF THE STORM
WAS LOCATED 6 MILES SOUTH OF CLAYTON...OR ABOUT 7 MILES EAST OF CLEAR
LAKE...AND MOVING NORTHEAST AT 35 MPH.
LOCATIONS IN THE WARNING INCLUDE...
RIDGELAND...PRAIRIE FARM...RANGE...TURTLE LAKE...HILLSDALE...
COMSTOCK...CUMBERLAND...BARRON...MCKINLEY...BARRONETT...CLAM FALLS
AND CLAYTON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WHEN A TORNADO WARNING IS ISSUED BASED ON RADAR...IT MEANS THAT
STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY ALREADY
BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY.
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT THURSDAY MORNING
FOR NORTHWESTERN WISCONSIN.
&&
LAT...LON 4571 9214 4565 9215 4565 9200 4555 9181
4502 9188 4515 9216 4521 9216 4528 9225
4573 9238 4573 9217
TIME...MOT...LOC 2235Z 204DEG 28KT 4524 9213
$$000
WWUS53 KMPX 192258
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
558 PM CDT WED AUG 19 2009
WIC005-033-095-192308-
/O.EXP.KMPX.TO.W.0050.000000T0000Z-090819T2300Z/
POLK WI-BARRON WI-DUNN WI-
558 PM CDT WED AUG 19 2009
...THE TORNADO WARNING FOR NORTHWESTERN DUNN...WESTERN BARRON AND
EASTERN POLK COUNTIES EXPIRES AT 600 PM CDT...
TORNADIC SEVERE STORMS WERE ABOUT TO MOVE OUT OF THE COUNTY.
HOWEVER...MORE THUNDERSTORMS WERE DEVELOPING ACROSS SOUTHERN
MINNESOTA AND WILL MOVE EAST THIS EVENING. REMAIN ALERT FOR
POSSIBLE ADDITIONAL WARNINGS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT THURSDAY MORNING
FOR NORTHWESTERN WISCONSIN.
LAT...LON 4571 9214 4565 9215 4565 9200 4555 9181
4502 9188 4515 9216 4521 9216 4528 9225
4573 9238 4573 9217
TIME...MOT...LOC 2258Z 204DEG 28KT 4539 9198
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 2:43 PM CDT | Tornado Warning | MPX | Pierce | 32 min |
| Aug 19, 2:53 PM CDT | Tornado Warning | MPX | Saint Croix | 22 min |
| Aug 19, 2:57 PM CDT | Tornado Warning | MPX | Pierce, Saint Croix | 48 min |
| Aug 19, 3:16 PM CDT | Tornado Warning | MPX | Polk, Saint Croix | 29 min |
| Aug 19, 4:04 PM CDT | Tornado Warning | MPX | Dunn, Saint Croix | 26 min |
| Aug 19, 4:06 PM CDT | Tornado Warning | MPX | Pierce, Saint Croix | 39 min |
| Aug 19, 4:14 PM CDT | Tornado Warning | MPX | Barron, Polk | 46 min |
| Aug 19, 4:21 PM CDT | Tornado Warning | MPX | Polk | 39 min |
| Aug 19, 4:33 PM CDT | Tornado Warning | MPX | Saint Croix | 27 min |
| Aug 19, 4:43 PM CDT | Tornado Warning | MPX | Dunn, Pierce, Saint Croix | 47 min |
Nearby
Tornado Warnings in Wisconsin, 2009Every tornado warning in 2009Tornadoes in 2009
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.