Alert archive / Iowa / Tornado Warnings in 2013
Tornado Warning 21, NWS La Crosse, WI
NWS La Crosse, WI issued this tornado warning at Jun 12, 2013, 4:05 PM CDT for Clayton County, Iowa; Grant County, Wisconsin. It was in force for 25 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 12, 2013, 4:05 PM CDT (21:05 UTC)
- Expired
- Jun 12, 2013, 4:30 PM CDT
- In force
- 25 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.0 in
Counties Clayton County, IA, Grant County, WI
The radar
The La Crosse radar (KARX), 114 km from the middle of the area, began a volume at 21:07 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 12, 4:15 PM CDT | FUNNEL CLOUD | Guttenberg, IA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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 12, 1:49 PM CDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 9.1 hours before the alert went out and 139 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
- 1812 J/kg
- Mixed-layer CIN
- -167 J/kg
- Mixed-layer LCL
- 1138 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 185 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
909
WFUS53 KARX 122105
TORARX
IAC043-WIC043-122130-
/O.NEW.KARX.TO.W.0021.130612T2105Z-130612T2130Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
405 PM CDT WED JUN 12 2013
THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A
* TORNADO WARNING FOR...
EAST CENTRAL CLAYTON COUNTY IN NORTHEAST IOWA...
WEST CENTRAL GRANT COUNTY IN SOUTHWEST WISCONSIN...
* UNTIL 430 PM CDT
* AT 403 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED NEAR GARNAVILLO...AND MOVING SOUTHEAST AT 25
MPH.
HAZARD...TORNADO AND QUARTER SIZE HAIL.
SOURCE...RADAR INDICATED ROTATION.
IMPACT...MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE TO
ROOFS...WINDOWS AND VEHICLES WILL OCCUR. FLYING DEBRIS
WILL BE DEADLY TO PEOPLE AND ANIMALS. TREE DAMAGE IS
LIKELY.
* THIS DANGEROUS STORM WILL BE NEAR...
GUTTENBERG AROUND 420 PM CDT.
OTHER LOCATIONS IN THE WARNING INCLUDE OSTERDOCK...GLEN HAVEN...LOCK
AND DAM 10...MILLVILLE...NELSON DEWEY STATE PARK...TURKEY RIVER AND
NORTH ANDOVER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4283 9092 4267 9104 4279 9128 4288 9121
TIME...MOT...LOC 2105Z 295DEG 22KT 4282 9120
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
AJ1 follow-up statement
636
WWUS53 KARX 122117
SVSARX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
417 PM CDT WED JUN 12 2013
IAC043-WIC043-122130-
/O.CON.KARX.TO.W.0021.000000T0000Z-130612T2130Z/
CLAYTON IA-GRANT WI-
417 PM CDT WED JUN 12 2013
...A TORNADO WARNING REMAINS IN EFFECT FOR WEST CENTRAL GRANT AND
EAST CENTRAL CLAYTON COUNTIES UNTIL 430 PM CDT...
AT 412 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR GUTTENBERG...AND MOVING SOUTHEAST AT 25 MPH.
HAZARD...TORNADO AND QUARTER SIZE HAIL.
SOURCE...WEATHER SPOTTERS REPORTED MULTIPLE FUNNEL CLOUDS NEAR
GUTTENBERG.
IMPACT...MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE TO
ROOFS...WINDOWS AND VEHICLES WILL OCCUR. FLYING DEBRIS WILL
BE DEADLY TO PEOPLE AND ANIMALS. TREE DAMAGE IS LIKELY.
THIS DANGEROUS STORM WILL AFFECT THE FOLLOWING LOCATIONS...
GUTTENBERG...MILLVILLE...NELSON DEWEY STATE PARK AND TURKEY RIVER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4278 9121 4285 9116 4283 9092 4267 9104
TIME...MOT...LOC 2117Z 297DEG 21KT 4279 9112
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
AJThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 3:55 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 65 min |
| Jun 12, 4:29 PM CDT | Tornado Warning | ARX | Clayton | 46 min |
| Jun 12, 5:54 PM CDT | Severe Thunderstorm Warning | ARX | Howard, Mitchell | 66 min |
| Jun 12, 4:35 PM CDT | Severe Thunderstorm Warning | ARX | Grant, Richland | 55 min |
| Jun 12, 4:38 PM CDT | Tornado Warning | ARX | Grant | 37 min |
| Jun 12, 5:48 PM CDT | Areal Flood Advisory | ARX | Adams, Juneau | 3 hr |
Nearby
Tornado Warnings in Iowa, 2013Tornado Warnings in Wisconsin, 2013Every tornado warning in 2013Tornadoes in 2013
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.