Alert archive / Iowa / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 13, NWS La Crosse, WI

April 12, 2022Fillmore County, Mower County, Olmsted County, Minnesota; 4 counties in Iowa

NWS La Crosse, WI issued this severe thunderstorm warning at Apr 12, 2022, 10:30 PM CDT for Fillmore County, Mower County, Olmsted County, Minnesota; 4 counties in Iowa. It was in force for 60 min. 18 reports 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: Apr 12, 2022, 10:30 PM CDT (03:30 UTC)
Expired: Apr 12, 2022, 11:30 PM CDT
In force: 60 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Chickasaw County, IA, Floyd County, IA, Howard County, IA, Mitchell County, IA, Fillmore County, MN, Mower County, MN, Olmsted County, MN

The radar

The La Crosse radar (KARX), 114 km from the middle of the area, began a volume at 03:34 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
Apr 12, 10:32 PM CDT	HAIL 0.25	Wykoff, MN
Apr 12, 10:41 PM CDT	TORNADO	3 Se Rock Creek, IA	EF0 TORNADO THAT TRACKED 8.2 MILES ACROSS PARTS OF FLOYD AND MITCHELL COUNTIES. MAX WIND 80. DAMAGE TO MAINLY TREES.
Apr 12, 10:42 PM CDT	HAIL 1	Taopi, MN
Apr 12, 10:44 PM CDT	TORNADO	Taopi, MN	* 2 INJ * EF-2. THIS TORNADO FORMED SOUTHWEST OF TAOPI AND QUICKLY INTENSIFIED CAUSING SIGNIFICANT DAMAGE TO THE SMALL TOWN. MOST BUILDINGS WERE DAMAGED AND SEVERAL WERE DESTROYED. SEVERAL CARS WERE ALSO TOSSED. A TOTAL OF 2 INJURIES WERE REPORTED AND SEVE
Apr 12, 10:44 PM CDT	TORNADO	Taopi, MN	* 2 INJ * THIS TORNADO FORMED SOUTHWEST OF TAOPI AND QUICKLY INTENSIFIED CAUSING SIGNIFICANT DAMAGE TO THE SMALL TOWN. MOST BUILDINGS WERE DAMAGED AND SEVERAL WERE DESTROYED. SEVERAL CARS WERE ALSO TOSSED. A TOTAL OF 2 INJURIES WERE REPORTED AND SEVERAL FA
Apr 12, 10:48 PM CDT	TSTM WND DMG	1 Sw Taopi, MN	ROOF DAMAGE TO RESIDENCE JUST SOUTHWEST OF TOWN. POSSIBLE TORNADO.
Apr 12, 10:48 PM CDT	TSTM WND DMG	Taopi, MN	ANOTHER REPORT OF HOME DAMAGE IN TOWN
Apr 12, 10:48 PM CDT	TSTM WND DMG	Taopi, MN	* 2 INJ * CORRECTS PREVIOUS TSTM WND DMG REPORT FROM TAOPI. HOUSE SLID OFF FOUNDATION, ROOFS OFF HOUSES IN AND AROUND TOWN. GRAIN BINS DESTROYED. HIGH TRANSMISSION POWER LINES SNAPPED. DAMAGE TRACK SEVERAL MILES LONG GOES THROUGH THE WESTERN SIDE OF TOWN.
Apr 12, 10:57 PM CDT	TORNADO	4 Sse Little Cedar, IA	EF-1. THE TORNADO TRACKED THROUGH BROWNVILLE AND DAMAGED FARM OUTBUILDINGS AND TREES. PATH LENGTH 2.2 MILES TO 1 ENE BROWNVILLE.
Apr 12, 11:00 PM CDT	TSTM WND DMG	2 Sw Spring Valley, MN	BARN DOWN.
Apr 12, 11:01 PM CDT	TORNADO	2 E New Haven, IA	EF-1. TORNADO TRACKED SOUTH OF RICEVILLE AND DAMAGED NUMEROUS FARM BUILDINGS AND GRAIN BINS. PATH LENGTH 5.3 MILES TO 2 SSE RICEVILLE.
Apr 12, 11:05 PM CDT	TSTM WND GST 60	Charles City, IA	AT FIRE STATION
Apr 12, 11:08 PM CDT	TORNADO	2 N Ostrander, MN	EF-1. THIS TORNADO TRACKED JUST WEST OF SPRING VALLEY AND CAUSED DAMAGE TO SEVERAL FARMS AND OUTBUILDINGS. 2.3 MILE PATH LENGTH TO 1 WSW SPRING VALLEY, MN.
Apr 12, 11:09 PM CDT	TSTM WND DMG	1 Sw Spring Valley, MN	POWER POLES BLOWN DOWN
Apr 12, 11:09 PM CDT	TSTM WND GST 60	2 Sw Spring Valley, MN
Apr 12, 11:13 PM CDT	TORNADO	1 Sse Saratoga, IA	EF-0. A TORNADO CAUSED DAMAGE TO TREES ON A 0.4 MILE PATH.
Apr 12, 11:15 PM CDT	TSTM WND GST 64	3 E Charles City, IA	AWOS STATION KCCY CHARLES CITY AIRPORT.
Apr 12, 11:20 PM CDT	TSTM WND GST 55	2 N Ionia, IA	MESONET STATION RNHI4 2 N IONIA.

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
Apr 12, 7:54 PM CDT	Tornado Watch	SPC	4 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 3.5 hours before the alert went out and 172 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 992 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 710 m²/s²
0-3 km storm-relative helicity: 827 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

712 
WUUS53 KARX 130330
SVRARX
IAC037-067-089-131-MNC045-099-109-130430-
/O.NEW.KARX.SV.W.0013.220413T0330Z-220413T0430Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service La Crosse WI
1030 PM CDT Tue Apr 12 2022

The National Weather Service in La Crosse has issued a

* Severe Thunderstorm Warning for...
  Mitchell County in north central Iowa...
  Howard County in northeastern Iowa...
  Floyd County in north central Iowa...
  Western Chickasaw County in northeastern Iowa...
  Southern Olmsted County in southeastern Minnesota...
  Mower County in southeastern Minnesota...
  Western Fillmore County in southeastern Minnesota...

* Until 1130 PM CDT.

* At 1030 PM CDT, severe thunderstorms were located along a line
  extending from near Ellendale to near Rockwell, moving east at 45
  mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Severe thunderstorms will be near...
  Rockford around 1045 PM CDT.
  Marble Rock around 1050 PM CDT.
  Nashua around 1115 PM CDT.
  Stewartville and Ionia around 1120 PM CDT.
  New Hampton around 1130 PM CDT.

Other locations impacted by these severe thunderstorms include
Forestville State Park, Toeterville, Bradford, Chickasaw, County
Roads T 54 And A 31, Fillmore and Mayville.

This includes Interstate 90 in Minnesota between mile markers 175 and
206.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until midnight CDT for north
central and northeastern Iowa...and southeastern Minnesota.

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

A Tornado Watch remains in effect until midnight CDT for north
central and northeastern Iowa...and southeastern Minnesota.

&&

LAT...LON 4385 9305 4385 9207 4363 9208 4351 9217
      4291 9232 4291 9303
TIME...MOT...LOC 0330Z 266DEG 38KT 4387 9323 4295 9319 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Skow

1 follow-up statement

442 
WWUS53 KARX 130359
SVSARX

Severe Weather Statement
National Weather Service La Crosse WI
1059 PM CDT Tue Apr 12 2022

IAC037-067-089-131-MNC045-099-109-130430-
/O.CON.KARX.SV.W.0013.000000T0000Z-220413T0430Z/
Mitchell IA-Howard IA-Floyd IA-Chickasaw IA-Olmsted MN-Mower MN-
Fillmore MN-
1059 PM CDT Tue Apr 12 2022

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR MITCHELL...HOWARD...FLOYD...WESTERN CHICKASAW...SOUTHERN
OLMSTED...EASTERN MOWER AND WESTERN FILLMORE COUNTIES...

At 1059 PM CDT, severe thunderstorms were located along a line
extending from 6 miles southeast of Stewartville to Marble Rock,
moving east at 60 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

These severe storms will be near...
  Wykoff around 1105 PM CDT.
  Chatfield and Fountain around 1110 PM CDT.
  Nashua around 1115 PM CDT.
  Ionia around 1120 PM CDT.

Other locations impacted by these severe thunderstorms include
Forestville State Park, County Roads B 60 And T 18, Idlewilde State
Park, Bradford, Chickasaw, Brownville and County Roads T 54 And A 31.

This includes Interstate 90 in Minnesota between mile markers 190 and
206.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until midnight CDT for north
central and northeastern Iowa...and southeastern Minnesota.

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4385 9269 4385 9207 4363 9208 4351 9217
      4291 9232 4291 9303
TIME...MOT...LOC 0359Z 271DEG 54KT 4381 9238 4296 9284 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Skow

The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 12, 9:56 PM CDT	Severe Thunderstorm Warning	ARX	Fillmore, Mower	49 min
Apr 12, 10:18 PM CDT	Severe Thunderstorm Warning	ARX	Mower	42 min
Apr 12, 10:37 PM CDT	Tornado Warning	ARX	Fillmore, Mower	23 min
Apr 12, 11:02 PM CDT	Tornado Warning	ARX	Fillmore, Mower	28 min
Apr 12, 11:19 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ARX	Fillmore, Houston, Olmsted, Winona	41 min
Apr 12, 11:23 PM CDT	Tornado Warning	ARX	Fillmore, Olmsted, Winona	37 min
Apr 12, 11:27 PM CDT	Tornado Warning	ARX	Fillmore	17 min
Apr 12, 11:43 PM CDT	Severe Thunderstorm Warning	ARX	Fillmore, Houston, Winona	47 min
Apr 12, 11:51 PM CDT	Severe Thunderstorm Warning	ARX	Houston	39 min
Apr 13, 2:02 AM CDT	River Flood Warning	ARX	Olmsted, Winona	7 hr
Apr 13, 2:30 PM CDT	Wind Advisory	ARX	Dodge, Fillmore, Houston, Mower, Olmsted, Wabasha and 1 more	29 hr
Apr 12, 8:30 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ARX	Floyd, Mitchell	60 min
Apr 12, 8:46 PM CDT	Tornado Warning	ARX	Floyd	44 min
Apr 12, 9:08 PM CDT	Tornado Warning	ARX	Mitchell	37 min
Apr 12, 9:26 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ARX	Howard, Mitchell	49 min
Apr 12, 10:26 PM CDT	Flash Flood Warning	ARX	Mitchell	3 hr
Apr 12, 11:07 PM CDT	Tornado Warning Tornado observed	ARX	Howard, Mitchell	23 min
Apr 12, 11:15 PM CDT	Severe Thunderstorm Warning	ARX	Chickasaw, Fayette, Howard, Winneshiek	45 min
Apr 13, 12:32 AM CDT	Special Weather Statement	ARX	Clayton	28 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2022 Severe Thunderstorm Warnings in Minnesota, 2022 Every severe thunderstorm warning in 2022

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.