Alert archive / Wisconsin / Tornado Warnings in 2023

Tornado Warning 2, NWS Milwaukee, WI

March 31, 2023Rock County, Wisconsin

NWS Milwaukee, WI issued this tornado warning at Mar 31, 2023, 7:26 PM CDT for Rock County, Wisconsin. It was in force for 49 min. 4 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: Mar 31, 2023, 7:26 PM CDT (00:26 UTC)
Expired: Mar 31, 2023, 8:15 PM CDT
In force: 49 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Rock County, WI

The radar

The Milwaukee radar (KMKX), 57 km from the middle of the area, began a volume at 00:28 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
Mar 31, 7:46 PM CDT	TSTM WND DMG	Beloit, WI	DELAYED REPORT VIA SOCIAL MEDIA OF A COLLAPSED GARAGE.
Mar 31, 7:46 PM CDT	TORNADO	Beloit, WI	EF-0 TORNADO. ESTIMATED MAX WIND SPEED: 80MPH. PATH LENGTH: 3.8 MILES. PATH WIDTH: 100 YARDS. TORNADO STARTED IN THE CENTER OF BELOIT IN THE MERRILL PARK AREA. THE TORNADO UPROOTED NUMEROUS TREES ALONG ITS PATH THROUGH THE EASTERN SIDE OF THE CITY (TURTLE AREA
Mar 31, 7:50 PM CDT	TSTM WND DMG	2 Ene Beloit, WI	DELAYED REPORT. TIME ESTIMATED VIA RADAR. A COUPLE OF DOWNED TREES AND A FENCE GATE, WHICH WAS CLOSED AND LATCHED, WAS TAKEN OFF ITS HINGES AND THROWN ABOUT 25 FEET INTO THE NEARBY YARD.
Mar 31, 7:58 PM CDT	FUNNEL CLOUD	6 Nnw Beloit, WI	REPORT OF A ROTATING WALL CLOUD AND FUNNEL MOVING THROUGH AFTON AND ACROSS THE ROCK RIVER.

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
Mar 31, 2:36 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 0.4 hours before the alert went out and 163 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: 1722 m above ground
0-6 km bulk shear: 75 kt
0-1 km storm-relative helicity: -457 m²/s²
0-3 km storm-relative helicity: -447 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

158 
WFUS53 KMKX 010026
TORMKX
WIC105-010115-
/O.NEW.KMKX.TO.W.0002.230401T0026Z-230401T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Milwaukee/Sullivan WI
726 PM CDT Fri Mar 31 2023

The National Weather Service in Milwaukee/Sullivan has issued a

* Tornado Warning for...
  Rock County in south central Wisconsin...

* Until 815 PM CDT.
    
* At 725 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Durand, or 13 miles south of Brodhead, moving
  northeast at 55 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.

* Locations impacted include...
  Janesville, Beloit, South Beloit, Milton, Clinton, Orfordville,
  Footville, Newark, Tiffany, Hanover, Avalon, Shopiere, Afton, Avon,
  Emerald Grove, Johnstown Center, Foxhollow, and Leyden.

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.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 4250 8936 4254 8936 4285 8900 4285 8899
      4271 8878 4253 8878 4249 8886
TIME...MOT...LOC 0025Z 228DEG 48KT 4243 8936 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

KUROSKI

2 follow-up statements

892 
WWUS53 KMKX 010057
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
757 PM CDT Fri Mar 31 2023

WIC105-010115-
/O.CON.KMKX.TO.W.0002.000000T0000Z-230401T0115Z/
Rock WI-
757 PM CDT Fri Mar 31 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR EASTERN
ROCK COUNTY...
    
At 756 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Janesville, moving northeast at 60 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.

Locations impacted include...
Janesville, Beloit, Milton, Clinton, Tiffany, Johnstown Center,
Foxhollow, Leyden, Avalon, Shopiere, Afton, and Emerald Grove.

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.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 4254 8905 4271 8916 4285 8900 4285 8899
      4271 8878 4253 8878 4249 8886
TIME...MOT...LOC 0056Z 229DEG 51KT 4271 8893 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

KUROSKI

058 
WWUS53 KMKX 010102
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
802 PM CDT Fri Mar 31 2023

WIC105-010115-
/O.CON.KMKX.TO.W.0002.000000T0000Z-230401T0115Z/
Rock WI-
802 PM CDT Fri Mar 31 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR EASTERN
ROCK COUNTY...
    
At 802 PM CDT, a confirmed tornado was located near Milton, moving
northeast at 55 mph.

HAZARD...Tornado.

SOURCE...Weather spotters spotted funnel cloud.

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.

Locations impacted include...
Janesville, Milton, Clinton, Tiffany, Johnstown Center, Avalon,
Shopiere, and Emerald Grove.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 4257 8898 4278 8906 4285 8900 4285 8899
      4271 8878 4253 8878 4251 8884
TIME...MOT...LOC 0102Z 228DEG 48KT 4276 8885 

TORNADO...OBSERVED
MAX HAIL SIZE...<.75 IN

$$

CMILLER

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 31, 7:08 PM CDT	Tornado Warning	MKX	Green, Rock	37 min
Mar 31, 7:11 PM CDT	Severe Thunderstorm Warning	MKX	Dane, Green, Iowa, Jefferson, Lafayette, Rock	64 min
Mar 31, 7:35 PM CDT	Tornado Warning	MKX	Dane, Jefferson, Rock	40 min
Mar 31, 7:49 PM CDT	Tornado Warning	MKX	Jefferson, Rock, Walworth	41 min
Mar 31, 7:50 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson, Kenosha, Racine, Rock, Walworth, Waukesha	55 min
Mar 31, 7:58 PM CDT	Special Marine Warning	MKX		92 min
Mar 31, 8:15 PM CDT	Tornado Warning Tornado observed	MKX	Jefferson	17 min
Mar 31, 8:23 PM CDT	Severe Thunderstorm Warning	MKX	Kenosha, Milwaukee, Racine	32 min
Mar 31, 8:49 PM CDT	Special Weather Statement	MKX	Dodge, Ozaukee, Washington	41 min
Mar 31, 10:05 PM CDT	River Flood Watch	MKX	Sheboygan	7 hr
Apr 1, 5:03 AM CDT	River Flood Warning	MKX	Sheboygan	10 hr
Apr 1, 3:55 PM CDT	Small Craft Advisory	MKX		10 hr

Nearby

Tornado Warnings in Wisconsin, 2023 Every tornado warning in 2023 Tornadoes in 2023

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.