Alert archive / Iowa / Tornado Warnings in 2019
Tornado Warning 22, NWS La Crosse, WI
NWS La Crosse, WI issued this tornado warning at Sep 12, 2019, 3:50 PM CDT for Chickasaw County, Howard County, Iowa. It was in force for 25 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 12, 2019, 3:50 PM CDT (20:50 UTC)
- Expired
- Sep 12, 2019, 4:15 PM CDT
- In force
- 25 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Chickasaw County, IA, Howard County, IA
The radar
The La Crosse radar (KARX), 120 km from the middle of the area, began a volume at 20:54 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 |
|---|---|---|---|
| Sep 12, 2:19 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 8.8 hours before the alert went out and 203 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 828 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 480 m²/s²
- 0-3 km storm-relative helicity
- 600 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
153
WFUS53 KARX 122050
TORARX
IAC037-089-122115-
/O.NEW.KARX.TO.W.0022.190912T2050Z-190912T2115Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service La Crosse WI
350 PM CDT Thu Sep 12 2019
The National Weather Service in La Crosse has issued a
* Tornado Warning for...
Southern Howard County in northeastern Iowa...
Northern Chickasaw County in northeastern Iowa...
* Until 415 PM CDT.
* At 349 PM CDT, severe thunderstorms capable of producing a tornado
was located from near Bassett to New Hampton moving northeast at
35 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This dangerous storm will be near...
Elma around 405 PM CDT.
Other locations impacted by this tornadic thunderstorm include Lylahs
Marsh County Park, County Roads B 33 And T 76, County B 17 And Bell
Avenue, Maple Leaf, County Roads V 58 And A 46, New Hampton Airport
and Bassett.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4333 9256 4335 9255 4330 9208 4301 9228
4306 9255
TIME...MOT...LOC 2049Z 203DEG 31KT 4313 9249
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
Batzek1 follow-up statement
511
WWUS53 KARX 122112
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
412 PM CDT Thu Sep 12 2019
IAC037-089-122122-
/O.EXP.KARX.TO.W.0022.000000T0000Z-190912T2115Z/
Howard IA-Chickasaw IA-
412 PM CDT Thu Sep 12 2019
...THE TORNADO WARNING FOR SOUTHERN HOWARD AND NORTHERN CHICKASAW
COUNTIES WILL EXPIRE AT 415 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.
A Tornado Watch remains in effect until 1000 PM CDT for north central
and northeastern Iowa.
LAT...LON 4333 9256 4335 9255 4330 9208 4301 9228
4306 9255
TIME...MOT...LOC 2112Z 203DEG 31KT 4331 9239
$$
LawrenceThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 11, 9:14 PM CDT | Flash Flood Warning | ARX | Clayton | 3 hr |
| Sep 12, 12:42 AM CDT | Flash Flood Warning | ARX | Clayton | 3 hr |
| Sep 12, 2:12 AM CDT | Flash Flood Watch | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 22 hr |
| Sep 12, 3:41 AM CDT | Flash Flood Warning | ARX | Clayton | 3 hr |
| Sep 12, 3:46 AM CDT | Flash Flood Warning | ARX | Clayton | 2 hr |
| Sep 12, 6:19 AM CDT | Areal Flood Warning | ARX | Clayton | 11 hr |
| Sep 12, 3:24 PM CDT | Tornado Warning | ARX | Howard, Mitchell | 22 min |
| Sep 12, 4:39 PM CDT | Tornado Warning | ARX | Fayette, Winneshiek | 36 min |
| Sep 12, 4:45 PM CDT | Tornado Warning | ARX | Fayette, Winneshiek | 30 min |
| Sep 12, 5:04 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee, Winneshiek | 17 min |
| Sep 12, 5:36 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 39 min |
| Sep 12, 5:38 PM CDT | Tornado Warning | ARX | Allamakee | 37 min |
| Sep 12, 6:16 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee, Clayton | 27 min |
| Sep 12, 6:17 PM CDT | Flash Flood Warning | ARX | Clayton | 4 hr |
Nearby
Tornado Warnings in Iowa, 2019Every tornado warning in 2019Tornadoes in 2019
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.