Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 7, NWS Milwaukee, WI

July 14, 2021Green County, Lafayette County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Jul 14, 2021, 1:15 PM CDT for Green County, Lafayette County, Wisconsin. It was in force for 45 min. 1 report 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 14, 2021, 1:15 PM CDT (18:15 UTC)
Expired: Jul 14, 2021, 2:00 PM CDT
In force: 45 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Green County, WI, Lafayette County, WI

The radar

The Milwaukee radar (KMKX), 92 km from the middle of the area, began a volume at 18:14 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 14, 1:40 PM CDT	TSTM WND GST 48	3 Ene Monroe, WI	MONROE MUNICIPAL AIRPORT.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 6.3 hours before the alert went out and 136 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: 573 J/kg
Mixed-layer CIN: -62 J/kg
Mixed-layer LCL: 1106 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 108 m²/s²
0-3 km storm-relative helicity: 139 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

As transmitted.

289 
WUUS53 KMKX 141815
SVRMKX
WIC045-065-141900-
/O.NEW.KMKX.SV.W.0007.210714T1815Z-210714T1900Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Milwaukee/Sullivan WI
115 PM CDT Wed Jul 14 2021

The National Weather Service in Milwaukee/Sullivan has issued a

* Severe Thunderstorm Warning for...
  Southeastern Lafayette County in south central Wisconsin...
  Green County in south central Wisconsin...

* Until 200 PM CDT.

* At 115 PM CDT, severe thunderstorms were located along a line
  extending from near Blanchardville to near Winslow, moving east at
  40 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Monroe, Brodhead, New Glarus, Brooklyn, Monticello, Albany,
  Blanchardville, Dayton, Browntown, Attica, Juda and Jordan Center.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4251 8985 4281 8986 4286 8945 4286 8937
      4251 8936 4250 8937 4250 8957
TIME...MOT...LOC 1815Z 264DEG 34KT 4281 8991 4253 8988 

HAIL...0.75IN
WIND...60MPH
 
$$

CMILLER

1 follow-up statement

229 
WWUS53 KMKX 141900
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
200 PM CDT Wed Jul 14 2021

WIC045-065-141910-
/O.EXP.KMKX.SV.W.0007.000000T0000Z-210714T1900Z/
Lafayette WI-Green WI-
200 PM CDT Wed Jul 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LAFAYETTE AND
GREEN COUNTIES HAS EXPIRED...
    
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning has
been allowed to expire.

LAT...LON 4251 8985 4281 8986 4286 8945 4286 8937
      4251 8936 4250 8937 4250 8957
TIME...MOT...LOC 1900Z 270DEG 34KT 4285 8934 4257 8931 

$$

CMILLER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 14, 12:22 PM CDT	Special Weather Statement	MKX	Iowa, Lafayette, Sauk	53 min
Jul 14, 12:50 PM CDT	Severe Thunderstorm Warning	MKX	Lafayette	40 min
Jul 14, 1:20 PM CDT	Special Weather Statement	MKX	Columbia, Dane	55 min
Jul 14, 1:53 PM CDT	Special Weather Statement	MKX	Rock	52 min
Jul 14, 2:36 PM CDT	Special Weather Statement	MKX	Jefferson, Walworth	54 min
Jul 14, 3:15 PM CDT	Special Weather Statement	MKX	Kenosha, Milwaukee, Racine, Walworth, Waukesha	60 min
Jul 14, 3:38 PM CDT	Special Weather Statement	MKX	Washington	37 min
Jul 14, 4:04 PM CDT	Special Marine Warning	MKX		26 min
Jul 14, 4:15 PM CDT	Special Marine Warning	MKX		60 min
Jul 14, 5:08 PM CDT	Special Weather Statement	MKX	Sauk	37 min
Jul 14, 5:16 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Sauk	44 min
Jul 14, 5:45 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dodge, Fond du Lac, Green Lake, Marquette	60 min
Jul 14, 6:29 PM CDT	Special Weather Statement	MKX	Fond du Lac	61 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2021 Every severe thunderstorm warning 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.