Alert archive / Wisconsin / Tornado Warnings in 2019

Tornado Warning 58, NWS Twin Cities, MN

September 24, 2019Chippewa County, Wisconsin

NWS Twin Cities, MN issued this tornado warning at Sep 24, 2019, 8:23 PM CDT for Chippewa County, Wisconsin. It was in force for 37 min. 2 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
Sep 24, 2019, 8:23 PM CDT (01:23 UTC)
Expired
Sep 24, 2019, 9:00 PM CDT
In force
37 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

County Chippewa County, WI

The radar

The La Crosse radar (KARX), 127 km from the middle of the area, began a volume at 01:22 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

TimeReportWhereRemark
Sep 24, 8:28 PM CDTTSTM WND DMG3 Sse Chippewa Falls, WITREES DOWN ACROSS 40TH AVE AND DAMAGE TO HOMES.
Sep 24, 8:34 PM CDTTSTM WND DMG2 Sse Chippewa Falls, WILARGE OAK ACROSS ROAD.

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.

IssuedProductOfficeLasted
Sep 24, 4:43 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.4 hours before the alert went out and 186 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-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2019-09-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1764 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2019-09-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 113 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
1764 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
1238 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
113 m²/s²
0-3 km storm-relative helicity
158 m²/s²
Significant tornado parameter
1.5
Supercell composite
10.5

Open this sounding in Storm Lab

The text

As transmitted.

924 
WFUS53 KMPX 250123
TORMPX
WIC017-250200-
/O.NEW.KMPX.TO.W.0058.190925T0123Z-190925T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
823 PM CDT Tue Sep 24 2019

The National Weather Service in The Twin Cities has issued a

* Tornado Warning for...
  Southeastern Chippewa County in west central Wisconsin...

* Until 900 PM CDT.
    
* At 823 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Chippewa Falls, or 7 miles northeast of Eau
  Claire, moving northeast at 45 mph.

  HAZARD...Tornado and quarter 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...
  Cadott around 835 PM CDT.
  Boyd around 840 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Bateman and Jim Falls.

This includes U.S. Highway 53 between mile markers 99 and 101.
 
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 4487 9138 4498 9145 4517 9107 4495 9095
TIME...MOT...LOC 0123Z 242DEG 38KT 4495 9135 

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

$$

CTG
3 follow-up statements
623 
WWUS53 KMPX 250136
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
836 PM CDT Tue Sep 24 2019

WIC017-250200-
/O.CON.KMPX.TO.W.0058.000000T0000Z-190925T0200Z/
Chippewa WI-
836 PM CDT Tue Sep 24 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR
SOUTHEASTERN CHIPPEWA COUNTY...
    
At 836 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Cadott, or 17 miles northeast of Eau Claire, moving
northeast at 45 mph.

HAZARD...Tornado and quarter 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...
  Boyd around 840 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Bateman and Jim Falls.

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 4491 9130 4502 9136 4517 9107 4495 9095
TIME...MOT...LOC 0136Z 242DEG 38KT 4502 9117 

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

$$

CTG
702 
WWUS53 KMPX 250148
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
848 PM CDT Tue Sep 24 2019

WIC017-250200-
/O.CON.KMPX.TO.W.0058.000000T0000Z-190925T0200Z/
Chippewa WI-
848 PM CDT Tue Sep 24 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR
SOUTHEASTERN CHIPPEWA COUNTY...
    
At 847 PM CDT, a severe thunderstorm capable of producing a tornado
was located 8 miles north of Boyd, or 25 miles northeast of Eau
Claire, moving northeast at 45 mph.

HAZARD...Tornado and quarter 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 Chippewa County.

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 4494 9114 4507 9123 4517 9107 4495 9095
TIME...MOT...LOC 0147Z 242DEG 38KT 4508 9102 

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

$$

CTG
303 
WWUS53 KMPX 250151
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
851 PM CDT Tue Sep 24 2019

WIC017-250200-
/O.EXP.KMPX.TO.W.0058.000000T0000Z-190925T0200Z/
Chippewa WI-
851 PM CDT Tue Sep 24 2019

...THE TORNADO WARNING FOR SOUTHEASTERN CHIPPEWA COUNTY WILL EXPIRE
AT 900 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.

A Tornado Watch remains in effect until midnight CDT for west central
Wisconsin.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
The Twin Cities.

LAT...LON 4494 9114 4507 9123 4517 9107 4495 9095
TIME...MOT...LOC 0150Z 242DEG 38KT 4509 9099 

$$

CTG

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 24, 7:03 PM CDTTornado WarningMPXSaint Croix27 min
Sep 24, 7:46 PM CDTTornado WarningMPXChippewa, Dunn29 min
Sep 24, 8:59 PM CDTTornado WarningMPXEau Claire11 min

Nearby

Tornado Warnings in Wisconsin, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.