Alert archive / Iowa / Tornado Warnings in 2013

Tornado Warning 25, NWS La Crosse, WI

October 4, 2013Howard County, Winneshiek County, Iowa; Fillmore County, Minnesota

NWS La Crosse, WI issued this tornado warning at Oct 4, 2013, 9:50 PM CDT for Howard County, Winneshiek County, Iowa; Fillmore County, Minnesota. 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: Oct 4, 2013, 9:50 PM CDT (02:50 UTC)
Expired: Oct 4, 2013, 10:15 PM CDT
In force: 25 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Howard County, IA, Winneshiek County, IA, Fillmore County, MN

The radar

The La Crosse radar (KARX), 65 km from the middle of the area, began a volume at 02:52 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 nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 2.8 hours before the alert went out and 193 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: 616 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 225 m²/s²
0-3 km storm-relative helicity: 340 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

153 
WFUS53 KARX 050250
TORARX
IAC089-191-MNC045-050315-
/O.NEW.KARX.TO.W.0025.131005T0250Z-131005T0315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
950 PM CDT FRI OCT 4 2013

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN HOWARD COUNTY IN NORTHEAST IOWA...
  NORTHWESTERN WINNESHIEK COUNTY IN NORTHEAST IOWA...
  EASTERN FILLMORE COUNTY IN SOUTHEAST MINNESOTA...

* UNTIL 1015 PM CDT

* AT 945 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 7 MILES NORTH OF CRESCO...AND MOVING NORTHEAST
  AT 30 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...
  HARMONY AROUND 1000 PM CDT.
  CANTON AROUND 1005 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE HUTTON...LENORA...HENRYTOWN...
AMHERST...NEWBURG AND TAWNEY.

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 4378 9190 4366 9173 4352 9173 4336 9209
      4346 9226
TIME...MOT...LOC 0251Z 235DEG 24KT 4349 9208

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

BOYNE

3 follow-up statements

429 
WWUS53 KARX 050258
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
958 PM CDT FRI OCT 4 2013

IAC089-191-MNC045-050315-
/O.CON.KARX.TO.W.0025.000000T0000Z-131005T0315Z/
HOWARD IA-WINNESHIEK IA-FILLMORE MN-
958 PM CDT FRI OCT 4 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR EASTERN FILLMORE...
NORTHWESTERN WINNESHIEK AND NORTHEASTERN HOWARD COUNTIES UNTIL 
1015 PM CDT...

AT 957 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR HARMONY...AND MOVING NORTHEAST AT 30 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...
  HARMONY AROUND 1005 PM CDT.
  CANTON AROUND 1010 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE HENRYTOWN...LENORA...
AMHERST...NEWBURG AND TAWNEY.

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 4378 9190 4366 9173 4352 9173 4336 9209
      4346 9226
TIME...MOT...LOC 0258Z 235DEG 24KT 4352 9203

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

BOYNE

506 
WWUS53 KARX 050304
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1004 PM CDT FRI OCT 4 2013

IAC089-191-MNC045-050315-
/O.CON.KARX.TO.W.0025.000000T0000Z-131005T0315Z/
HOWARD IA-WINNESHIEK IA-FILLMORE MN-
1004 PM CDT FRI OCT 4 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR EASTERN FILLMORE...
NORTHWESTERN WINNESHIEK AND NORTHEASTERN HOWARD COUNTIES UNTIL 
1015 PM CDT...

AT 1001 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED JUST SOUTHWEST OF HARMONY...AND MOVING NORTHEAST AT 
30 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...
  CANTON AROUND 1010 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE HENRYTOWN...LENORA...
AMHERST...NEWBURG AND TAWNEY.

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 4378 9190 4366 9173 4352 9173 4336 9209
      4346 9226
TIME...MOT...LOC 0304Z 235DEG 24KT 4354 9198

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

BOYNE

346 
WWUS53 KARX 050314
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
1014 PM CDT FRI OCT 4 2013

IAC089-191-MNC045-050324-
/O.CAN.KARX.TO.W.0025.000000T0000Z-131005T0315Z/
HOWARD IA-WINNESHIEK IA-FILLMORE MN-
1014 PM CDT FRI OCT 4 2013

...THE TORNADO WARNING FOR EASTERN FILLMORE...NORTHWESTERN WINNESHIEK
AND NORTHEASTERN HOWARD COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

LAT...LON 4378 9190 4366 9173 4352 9173 4336 9209
      4346 9226
TIME...MOT...LOC 0314Z 235DEG 24KT 4358 9190

$$

BOYNE

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 4, 8:48 PM CDT	Severe Thunderstorm Warning	ARX	Chickasaw, Floyd	57 min
Oct 4, 9:03 PM CDT	Flash Flood Warning	ARX	Chickasaw, Floyd, Howard, Mitchell	4 hr
Oct 4, 9:25 PM CDT	Severe Thunderstorm Warning	ARX	Chickasaw, Howard, Winneshiek	65 min
Oct 4, 10:02 PM CDT	Flash Flood Warning	ARX	Allamakee, Howard, Winneshiek	6 hr
Oct 4, 11:05 PM CDT	Flash Flood Watch	ARX	Allamakee, Chickasaw, Floyd, Howard, Mitchell, Winneshiek	5 hr
Oct 4, 11:59 PM CDT	Flash Flood Warning	ARX	Fillmore, Mower	6 hr
Oct 5, 3:50 AM CDT	Areal Flood Warning	ARX	Fillmore, Houston, Mower, Olmsted, Winona	6 hr

Nearby

Tornado Warnings in Iowa, 2013 Tornado Warnings in Minnesota, 2013 Every tornado warning in 2013 Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.