Alert archive / Wisconsin / Tornado Warnings in 2007
Tornado Warning 27, NWS Twin Cities, MN
NWS Twin Cities, MN issued this tornado warning at Sep 18, 2007, 6:45 PM CDT for Saint Croix County, Wisconsin. It was in force for 33 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 18, 2007, 6:45 PM CDT (23:45 UTC)
- Expired
- Sep 18, 2007, 7:18 PM CDT
- In force
- 33 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
County Saint Croix County, WI
The radar
The Minneapolis radar (KMPX), 90 km from the middle of the area, began a volume at 23:47 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 nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 11.8 hours before the alert went out and 93 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
- 327 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 618 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 100 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KMPX 182345 TORMPX WIC109-190030- /O.NEW.KMPX.TO.W.0027.070918T2345Z-070919T0030Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 645 PM CDT TUE SEP 18 2007 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * TORNADO WARNING FOR... ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN... * UNTIL 730 PM CDT * AT 642 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS 6 MILES SOUTH OF ROBERTS...OR ABOUT 10 MILES SOUTHEAST OF HUDSON...AND MOVING NORTHEAST AT 35 MPH. * LOCATIONS IMPACTED INCLUDE... ROBERTS... HAMMOND... BALDWIN... WOODVILLE... HERSEY... WILSON... EMERALD... FOREST... WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER 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 IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. LAT...LON 4502 9259 4519 9217 4486 9216 4487 9270 TIME...MOT...LOC 2345Z 229DEG 32KT 4491 9254 $$ MB
2 follow-up statements
000 WWUS53 KMPX 190002 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 700 PM CDT TUE SEP 18 2007 WIC109-190030- /O.CON.KMPX.TO.W.0027.000000T0000Z-070919T0030Z/ ST. CROIX WI- 700 PM CDT TUE SEP 18 2007 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR ST. CROIX COUNTY... AT 655 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE SEVERE THUNDERSTORM WAS LOCATED 3 MILES WEST OF HAMMOND...OR ABOUT 12 MILES EAST OF HUDSON...AND MOVING NORTHEAST AT 25 MPH. AT 650 PM CDT... A TRAINED SPOTTER REPORTED A WALL CLOUD 4 TO 5 MILES SOUTH OF ROBERTS. OTHER LOCATIONS IN THE WARNING INCLUDE HERSEY...FOREST...EMERALD... WOODVILLE...WILSON...ROBERTS...HAMMOND...GLENWOOD CITY AND BALDWIN. THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. LAT...LON 4502 9259 4519 9217 4486 9216 4487 9270 TIME...MOT...LOC 0000Z 227DEG 25KT 4498 9245 $$ MB
000 WWUS53 KMPX 190018 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 718 PM CDT TUE SEP 18 2007 WIC109-190028- /O.CAN.KMPX.TO.W.0027.000000T0000Z-070919T0030Z/ ST. CROIX WI- 718 PM CDT TUE SEP 18 2007 ...THE TORNADO WARNING FOR ST. CROIX COUNTY IS CANCELLED... THE STORM HAS WEAKENED...AND NO LONGER APPEARS TORNADIC. THEREFORE... THE TORNADO WARNING HAS BEEN CANCELLED. LAT...LON 4502 9259 4519 9217 4486 9216 4487 9270 TIME...MOT...LOC 0018Z 227DEG 25KT 4506 9231 $$ MB
Nearby
Tornado Warnings in Wisconsin, 2007Every tornado warning in 2007Tornadoes 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.