Alert archive / Iowa / Tornado Warnings in 2018
Tornado Warning 4, NWS La Crosse, WI
NWS La Crosse, WI issued this tornado warning at Jun 9, 2018, 1:00 PM CDT for Mitchell County, Iowa. It was in force for 45 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 9, 2018, 1:00 PM CDT (18:00 UTC)
- Expired
- Jun 9, 2018, 1:45 PM CDT
- In force
- 45 min
- Issued by
- NWS La Crosse, WI
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.25 in
County Mitchell County, IA
The radar
The La Crosse radar (KARX), 135 km from the middle of the area, began a volume at 18:01 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 9, 1:05 PM CDT | HAIL 1 | 4 N Osage, IA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 6.0 hours before the alert went out and 185 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
- 395 J/kg
- Mixed-layer CIN
- -155 J/kg
- Mixed-layer LCL
- 661 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 128 m²/s²
- 0-3 km storm-relative helicity
- 154 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.9
The text
As transmitted.
460
WFUS53 KARX 091800
TORARX
IAC131-091845-
/O.NEW.KARX.TO.W.0004.180609T1800Z-180609T1845Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service La Crosse WI
100 PM CDT SAT JUN 9 2018
The National Weather Service in La Crosse has issued a
* Tornado Warning for...
Southeastern Mitchell County in north central Iowa...
* Until 145 PM CDT
* At 100 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Osage, moving east at 20 mph.
HAZARD...Tornado and half dollar size hail.
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...
Riceville around 125 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Orchard, New Haven, Brownville, County Roads T 54 And A 31 and
Pioneer State Park.
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 4338 9282 4340 9255 4321 9255 4321 9283
TIME...MOT...LOC 1800Z 271DEG 18KT 4330 9273
TORNADO...RADAR INDICATED
HAIL...1.25IN
$$
Shea3 follow-up statements
065
WWUS53 KARX 091806
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
106 PM CDT SAT JUN 9 2018
IAC131-091845-
/O.CON.KARX.TO.W.0004.000000T0000Z-180609T1845Z/
Mitchell IA-
106 PM CDT SAT JUN 9 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 145 PM CDT FOR
SOUTHEASTERN MITCHELL COUNTY...
At 106 PM CDT, a severe thunderstorm capable of producing a tornado
was located just east of Osage, moving east at 15 mph.
HAZARD...Tornado and half dollar size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Riceville around 130 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Brownville, Pioneer State Park, County Roads 17 And T 72, New Haven
and Highways 9 And 218.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4336 9274 4340 9255 4321 9255 4323 9274
TIME...MOT...LOC 1806Z 261DEG 15KT 4331 9270
TORNADO...RADAR INDICATED
HAIL...1.25IN
$$
Shea062
WWUS53 KARX 091824
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
124 PM CDT SAT JUN 9 2018
IAC131-091845-
/O.CON.KARX.TO.W.0004.000000T0000Z-180609T1845Z/
Mitchell IA-
124 PM CDT SAT JUN 9 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 145 PM CDT FOR
SOUTHEASTERN MITCHELL COUNTY...
At 123 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Riceville, or 10 miles east of Osage, moving east at
15 mph.
HAZARD...Tornado and half dollar size hail.
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 tornadic thunderstorm will remain over mainly rural areas of
southeastern Mitchell County, including the following locations:
County Roads 17 And T 72 and New Haven.
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 9267 4334 9255 4321 9255 4324 9268
TIME...MOT...LOC 1823Z 283DEG 14KT 4328 9260
TORNADO...RADAR INDICATED
HAIL...1.25IN
$$
Shea512
WWUS53 KARX 091839
SVSARX
Severe Weather Statement
National Weather Service La Crosse WI
139 PM CDT SAT JUN 9 2018
IAC131-091849-
/O.EXP.KARX.TO.W.0004.000000T0000Z-180609T1845Z/
Mitchell IA-
139 PM CDT SAT JUN 9 2018
...THE TORNADO WARNING FOR SOUTHEASTERN MITCHELL COUNTY WILL EXPIRE
AT 145 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.
LAT...LON 4333 9267 4334 9255 4321 9255 4324 9268
TIME...MOT...LOC 1839Z 271DEG 18KT 4328 9250
$$
SheaThe office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 9:44 PM CDT | River Flood Warning | ARX | Floyd | 23 hr |
| Jun 9, 11:04 AM CDT | Flash Flood Watch | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 14 hr |
| Jun 9, 11:38 AM CDT | Special Weather Statement | ARX | Howard, Mitchell | 67 min |
| Jun 9, 12:30 PM CDT | Special Weather Statement | ARX | Mitchell | 30 min |
| Jun 9, 12:40 PM CDT | Severe Thunderstorm Warning | ARX | Mitchell | 50 min |
| Jun 9, 1:10 PM CDT | Severe Thunderstorm Warning | ARX | Howard | 65 min |
| Jun 9, 3:51 PM CDT | Severe Thunderstorm Warning | ARX | Floyd, Mitchell | 54 min |
| Jun 9, 4:04 PM CDT | Flash Flood Warning | ARX | Floyd, Mitchell | 3 hr |
| Jun 9, 4:19 PM CDT | Tornado Warning | ARX | Floyd | 41 min |
| Jun 9, 4:41 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Floyd | 79 min |
| Jun 9, 5:49 PM CDT | Flash Flood Warning | ARX | Howard, Winneshiek | 3 hr |
| Jun 9, 5:58 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Floyd | 47 min |
| Jun 9, 6:07 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 83 min |
| Jun 9, 6:20 PM CDT | Severe Thunderstorm Warning | ARX | Winneshiek | 55 min |
| Jun 9, 6:45 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee | 45 min |
| Jun 9, 6:58 PM CDT | Areal Flood Warning | ARX | Floyd, Mitchell | 6 hr |
Nearby
Tornado Warnings in Iowa, 2018Every tornado warning in 2018Tornadoes in 2018
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.