Alert archive / Wisconsin / Tornado Warnings in 2009
Tornado Warning 21, NWS La Crosse, WI
NWS La Crosse, WI issued this tornado warning at Jul 27, 2009, 6:21 PM CDT for Grant County, Wisconsin. It was in force for 24 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 27, 2009, 6:21 PM CDT (23:21 UTC)
- Expired
- Jul 27, 2009, 6:45 PM CDT
- In force
- 24 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
County Grant County, WI
The radar
The La Crosse radar (KARX), 105 km from the middle of the area, began a volume at 23:21 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 27, 2:41 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 11.4 hours before the alert went out and 151 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
- 21 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 1158 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 114 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KARX 272321 TORARX WIC043-272345- /O.NEW.KARX.TO.W.0021.090727T2321Z-090727T2345Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE LA CROSSE WI 621 PM CDT MON JUL 27 2009 THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A * TORNADO WARNING FOR... EAST CENTRAL GRANT COUNTY IN SOUTHWEST WISCONSIN... * UNTIL 645 PM CDT * AT 620 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO NEAR HIGHWAY 61 AND COUNTY T...OR 12 MILES NORTH OF LANCASTER...MOVING EAST AT 25 MPH. * THE TORNADO WILL BE NEAR... CASTLE ROCK AROUND 635 PM... PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER IN A BASEMENT OR IN AN INTERIOR ROOM ON THE LOWEST FLOOR AND STAY AWAY FROM WINDOWS && LAT...LON 4295 9074 4306 9074 4306 9043 4284 9042 TIME...MOT...LOC 2321Z 268DEG 24KT 4302 9064 $$ BOYNE
3 follow-up statements
000 WWUS53 KARX 272329 SVSARX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 629 PM CDT MON JUL 27 2009 WIC043-272345- /O.CON.KARX.TO.W.0021.000000T0000Z-090727T2345Z/ GRANT WI- 629 PM CDT MON JUL 27 2009 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR CENTRAL GRANT COUNTY... AT 627 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR CASTLE ROCK...OR 14 MILES NORTHEAST OF LANCASTER...MOVING EAST AT 30 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MONDAY EVENING FOR NORTHEASTERN IOWA AND SOUTHEAST MINNESOTA AND SOUTHWESTERN WISCONSIN. && LAT...LON 4295 9074 4306 9074 4306 9043 4284 9042 TIME...MOT...LOC 2329Z 269DEG 25KT 4302 9056 $$ BOYNE
000 WWUS53 KARX 272336 SVSARX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 636 PM CDT MON JUL 27 2009 WIC043-272345- /O.CON.KARX.TO.W.0021.000000T0000Z-090727T2345Z/ GRANT WI- 636 PM CDT MON JUL 27 2009 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR CENTRAL GRANT COUNTY... AT 630 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A POSSIBLE TORNADO NEAR PRESTON...OR 12 MILES NORTHEAST OF LANCASTER...MOVING EAST AT 30 MPH. * THE TORNADO WILL BE NEAR... MONTFORT AROUND 640 PM... PRECAUTIONARY/PREPAREDNESS ACTIONS... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MONDAY EVENING FOR NORTHEASTERN IOWA AND SOUTHEAST MINNESOTA AND SOUTHWESTERN WISCONSIN. && LAT...LON 4295 9074 4306 9074 4306 9043 4284 9042 TIME...MOT...LOC 2335Z 269DEG 25KT 4297 9050 $$ BOYNE
000 WWUS53 KARX 272346 SVSARX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 646 PM CDT MON JUL 27 2009 WIC043-272357- /O.EXP.KARX.TO.W.0021.000000T0000Z-090727T2345Z/ GRANT WI- 646 PM CDT MON JUL 27 2009 ...THE TORNADO WARNING FOR CENTRAL GRANT COUNTY EXPIRES AT 645 PM CDT... THE STORM WHICH PROMPTED THIS WARNING HAS MOVED OUT OF THE WARNED AREA. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT MONDAY EVENING FOR NORTHEASTERN IOWA AND SOUTHEAST MINNESOTA AND SOUTHWESTERN WISCONSIN. LAT...LON 4295 9074 4306 9074 4306 9043 4284 9042 TIME...MOT...LOC 2336Z 269DEG 25KT 4297 9049 $$ BOYNE
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 2:15 PM CDT | Severe Thunderstorm Warning | ARX | Clark, Jackson | 60 min |
| Jul 27, 2:50 PM CDT | Severe Thunderstorm Warning | ARX | Jackson | 25 min |
| Jul 27, 3:07 PM CDT | Severe Thunderstorm Warning | ARX | Jackson, Trempealeau | 33 min |
| Jul 27, 3:12 PM CDT | Severe Thunderstorm Warning | ARX | Jackson, Juneau | 48 min |
| Jul 27, 3:29 PM CDT | Severe Thunderstorm Warning | ARX | Monroe | 46 min |
| Jul 27, 4:12 PM CDT | Severe Thunderstorm Warning | ARX | Monroe | 48 min |
| Jul 27, 4:21 PM CDT | Severe Thunderstorm Warning | ARX | Adams | 39 min |
| Jul 27, 4:44 PM CDT | Severe Thunderstorm Warning | ARX | Juneau, Monroe, Vernon | 61 min |
| Jul 27, 5:00 PM CDT | Severe Thunderstorm Warning | ARX | Crawford, Richland | 60 min |
| Jul 27, 5:15 PM CDT | Tornado Warning | ARX | Crawford, Richland | 60 min |
| Jul 27, 5:36 PM CDT | Tornado Warning | ARX | Richland | 54 min |
| Jul 27, 5:59 PM CDT | Tornado Warning | ARX | Grant, Richland | 42 min |
| Jul 27, 6:10 PM CDT | Tornado Warning | ARX | Richland | 31 min |
| Jul 27, 6:24 PM CDT | Areal Flood Advisory | ARX | Crawford, Grant, Richland | 106 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.