Alert archive / Iowa / Tornado Warnings in 2009
Tornado Warning 11, NWS La Crosse, WI
NWS La Crosse, WI issued this tornado warning at Jun 17, 2009, 8:52 PM CDT for Howard County, Mitchell County, Iowa. It was in force for 53 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
- Jun 17, 2009, 8:52 PM CDT (01:52 UTC)
- Expired
- Jun 17, 2009, 9:45 PM CDT
- In force
- 53 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
Counties Howard County, IA, Mitchell County, IA
The radar
The La Crosse radar (KARX), 122 km from the middle of the area, began a volume at 01:55 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 |
|---|---|---|---|
| Jun 17, 7:01 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 1.9 hours before the alert went out and 176 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
- 1471 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 751 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 219 m²/s²
- 0-3 km storm-relative helicity
- 350 m²/s²
- Significant tornado parameter
- 1.8
- Supercell composite
- 12.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KARX 180152 TORARX IAC089-131-180245- /O.NEW.KARX.TO.W.0011.090618T0152Z-090618T0245Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE LA CROSSE WI 852 PM CDT WED JUN 17 2009 THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A * TORNADO WARNING FOR... NORTHEASTERN MITCHELL COUNTY IN NORTH CENTRAL IOWA... NORTHWESTERN HOWARD COUNTY IN NORTHEAST IOWA... * UNTIL 945 PM CDT * AT 850 PM CDT...DOPPLER RADAR AND STORM SPOTTERS INDICATED A TORNADO 8 MILES NORTH OF MEYER...OR 14 MILES SOUTHEAST OF AUSTIN... MOVING SOUTHEAST AT 25 MPH. THIS STORM HAS PRODUCED A TORNADO WITH INJURIES IN AUSTIN TONIGHT AND IS MOVING TOWARD IOWA. * THE TORNADO WILL BE NEAR... MEYER AROUND 900 PM... LITTLE CEDAR AROUND 905 PM... BAILEY AROUND 910 PM... MCINTIRE AND COUNTY ROADS T 54 AND A 31 AROUND 915 PM... COUNTY V 10 AND 40TH STREET AROUND 925 PM... RICEVILLE AROUND 930 PM... SARATOGA AROUND 945 PM... PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER IN A BASEMENT OR IN AN INTERIOR ROOM ON THE LOWEST FLOOR AND STAY AWAY FROM WINDOWS CARS AND MOBILE HOMES SHOULD BE ABANDONED FOR A STURDY BUILDING. AS A LAST RESORT...LAY FLAT IN A DITCH AND COVER YOUR HEAD. && LAT...LON 4350 9281 4350 9245 4334 9228 4335 9273 TIME...MOT...LOC 0151Z 303DEG 20KT 4356 9272 $$ BAUMGARDT
1 follow-up statement
000 WWUS53 KARX 180234 SVSARX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 934 PM CDT WED JUN 17 2009 IAC089-131-180245- /O.CON.KARX.TO.W.0011.000000T0000Z-090618T0245Z/ MITCHELL IA-HOWARD IA- 934 PM CDT WED JUN 17 2009 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 PM CDT FOR NORTHWESTERN HOWARD AND NORTHEASTERN MITCHELL COUNTIES... AT 931 PM CDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM WITH STRONG ROTATION. THIS TORNADO WAS LOCATED NEAR MCINTIRE...OR 16 MILES NORTHEAST OF OSAGE...MOVING SOUTHEAST AT 15 MPH. THIS IS STILL A DANGEROUS STORM AND HAS HAD A HISTORY OF PRODUCING A TORNADO WITH INJURIES. * THE TORNADO WILL BE NEAR... SARATOGA AND RICEVILLE AROUND 945 PM... PRECAUTIONARY/PREPAREDNESS ACTIONS... CARS AND MOBILE HOMES SHOULD BE ABANDONED FOR A STURDY BUILDING. AS A LAST RESORT...LAY FLAT IN A DITCH AND COVER YOUR HEAD. TAKE COVER IN A BASEMENT OR IN AN INTERIOR ROOM ON THE LOWEST FLOOR AND STAY AWAY FROM WINDOWS && LAT...LON 4350 9281 4350 9245 4334 9228 4335 9273 TIME...MOT...LOC 0233Z 297DEG 14KT 4340 9253 $$ BAUMGARDT
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 7:25 PM CDT | Severe Thunderstorm Warning | ARX | Howard, Mitchell | 65 min |
| Jun 17, 7:28 PM CDT | Tornado Warning | ARX | Floyd | 47 min |
| Jun 17, 8:10 PM CDT | Tornado Warning | ARX | Chickasaw, Floyd | 50 min |
| Jun 17, 8:29 PM CDT | Severe Thunderstorm Warning | ARX | Howard, Winneshiek | 46 min |
| Jun 17, 8:59 PM CDT | Tornado Warning | ARX | Chickasaw | 46 min |
| Jun 17, 9:29 PM CDT | Flash Flood Warning | ARX | Chickasaw | 3 hr |
| Jun 17, 9:47 PM CDT | Severe Thunderstorm Warning | ARX | Howard | 45 min |
| Jun 17, 9:50 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Fayette | 25 min |
| Jun 17, 10:49 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Howard, Winneshiek | 56 min |
| Jun 17, 11:31 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Fayette, Winneshiek | 57 min |
| Jun 18, 12:12 AM CDT | Severe Thunderstorm Warning | ARX | Fayette | 34 min |
Nearby
Tornado Warnings in Iowa, 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.