Alert archive / Wisconsin / Tornado Warnings in 2021

Tornado Warning 2, NWS Milwaukee, WI

July 28, 2021Fond du Lac County, Wisconsin

NWS Milwaukee, WI issued this tornado warning at Jul 28, 2021, 11:41 PM CDT for Fond du Lac County, Wisconsin. It was in force for 20 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: Jul 28, 2021, 11:41 PM CDT (04:41 UTC)
Expired: Jul 29, 2021, 12:01 AM CDT
In force: 20 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Fond du Lac County, WI

The radar

The Green Bay radar (KGRB), 89 km from the middle of the area, began a volume at 04:45 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
Jul 28, 11:43 PM CDT	TSTM WND DMG	Ripon, WI	REPORT OF MULTIPLE TREES DOWN IN RIPON. TIME ESTIMATED FROM RADAR.
Jul 28, 11:43 PM CDT	TSTM WND DMG	Ripon, WI	REPORTS OF MULTIPLE TREES DOWN IN RIPON. TIME ESTIMATED FROM RADAR.
Jul 28, 11:45 PM CDT	TSTM WND DMG	Ripon, WI	RELAYED FROM TMJ4 MULTIPLE POWER LINES AND POLES DOWN ACROSS RIPON. TIME ESTIMATED FROM RADAR.
Jul 28, 11:45 PM CDT	TSTM WND DMG	Ripon, WI	CITY OF RIPON POLICE DEPARTMENT REPORTS NUMEROUS DOWNED TREES AND ROAD CLOSURES CITY WIDE. POWER OUT CITY WIDE.

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
Jul 28, 7:17 PM CDT	Severe Thunderstorm Watch PDS	SPC	7 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 4.7 hours before the alert went out and 88 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: 593 J/kg
Mixed-layer CIN: -264 J/kg
Mixed-layer LCL: 1088 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 154 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

438 
WFUS53 KMKX 290441
TORMKX
WIC039-290530-
/O.NEW.KMKX.TO.W.0002.210729T0441Z-210729T0530Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Milwaukee/Sullivan WI
1141 PM CDT Wed Jul 28 2021

The National Weather Service in Milwaukee/Sullivan has issued a

* Tornado Warning for...
  Northwestern Fond du Lac County in east central Wisconsin...

* Until 1230 AM CDT.
    
* At 1141 PM CDT, a severe thunderstorm capable of producing a
  tornado was located near Rush Lake, or 7 miles northeast of Ripon,
  moving southeast at 30 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...
  Fond Du Lac, Ripon, North Fond Du Lac, Rosendale, Brandon,
  Lamartine, Eldorado, Fairwater, West Rosendale and Lagoda.

People attending Fond du Lac Airport should seek safe shelter
immediately!

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 4389 8861 4376 8841 4368 8867 4370 8888
      4390 8888 4390 8883
TIME...MOT...LOC 0441Z 324DEG 25KT 4393 8874 

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

$$

WAGNER

1 follow-up statement

612 
WWUS53 KMKX 290501
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
1201 AM CDT Thu Jul 29 2021

WIC039-290510-
/O.CAN.KMKX.TO.W.0002.000000T0000Z-210729T0530Z/
Fond du Lac WI-
1201 AM CDT Thu Jul 29 2021

...THE TORNADO WARNING FOR NORTHWESTERN FOND DU LAC COUNTY IS
CANCELLED...
    
The tornado threat has diminished and the Tornado Warning has been 
cancelled. However, damaging winds remain likely and a Severe 
Thunderstorm Warning remains in effect for the area. 

A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
east central Wisconsin.

Remember, a Severe Thunderstorm Warning still remains in effect for
portions of Fond Du Lac and Dodge counties.

LAT...LON 4389 8861 4376 8841 4368 8867 4370 8888
      4390 8888 4390 8883
TIME...MOT...LOC 0458Z 324DEG 25KT 4382 8863 

$$

WAGNER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 11:18 PM CDT	Severe Thunderstorm Warning	MKX	Fond du Lac, Green Lake, Marquette	72 min
Jul 28, 11:48 PM CDT	Special Weather Statement	MKX	Sauk	42 min
Jul 28, 11:55 PM CDT	Severe Thunderstorm Warning	MKX	Dodge, Washington	65 min
Jul 29, 12:22 AM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dane, Sauk	53 min
Jul 29, 12:26 AM CDT	Tornado Warning	MKX	Columbia, Dodge	31 min
Jul 29, 12:43 AM CDT	Tornado Warning	MKX	Columbia, Dane, Dodge, Jefferson	32 min
Jul 29, 12:45 AM CDT	Severe Thunderstorm Warning	MKX	Dane, Jefferson	45 min
Jul 29, 12:51 AM CDT	Severe Thunderstorm Warning	MKX	Dane, Iowa, Sauk	39 min
Jul 29, 12:57 AM CDT	Severe Thunderstorm Warning	MKX	Dodge, Washington	48 min
Jul 29, 1:07 AM CDT	Severe Thunderstorm Warning	MKX	Green, Lafayette	38 min
Jul 29, 1:08 AM CDT	Tornado Warning	MKX	Jefferson, Waukesha	37 min
Jul 29, 1:17 AM CDT	Severe Thunderstorm Warning	MKX	Dane, Jefferson, Kenosha, Milwaukee, Racine, Rock and 2 more	67 min
Jul 29, 1:24 AM CDT	Special Marine Warning	MKX		96 min
Jul 29, 1:31 AM CDT	Tornado Warning	MKX	Milwaukee, Racine, Walworth, Waukesha	44 min
Jul 29, 1:36 AM CDT	Tornado Warning	MKX	Rock	24 min
Jul 29, 1:51 AM CDT	Special Weather Statement	MKX	Green, Lafayette	24 min
Jul 29, 4:06 AM CDT	Small Craft Advisory	MKX		33 hr
Jul 29, 2:02 PM CDT	Beach Hazards Statement	MKX	Kenosha, Milwaukee, Ozaukee, Racine, Sheboygan	29 hr

Nearby

Tornado Warnings in Wisconsin, 2021 Every tornado warning in 2021 Tornadoes in 2021

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.