Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 55, NWS Milwaukee, WI

July 22, 2023Sheboygan County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Jul 22, 2023, 12:20 PM CDT for Sheboygan County, Wisconsin. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 22, 2023, 12:20 PM CDT (17:20 UTC)
Expired: Jul 22, 2023, 12:43 PM CDT
In force: 23 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Sheboygan County, WI

The radar

The Green Bay radar (KGRB), 86 km from the middle of the area, began a volume at 17:19 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 5.3 hours before the alert went out and 84 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: 488 J/kg
Mixed-layer CIN: -84 J/kg
Mixed-layer LCL: 1336 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 16 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Milwaukee, WI wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 22, 8:55 AM CDT, 3 hours 25 minutes earlier.

Area forecast discussion, Jul 22, 8:55 AM CDT, 3 hours 25 minutes before

Area Forecast Discussion
National Weather Service Milwaukee/Sullivan WI
855 AM CDT Sat Jul 22 2023

.UPDATE...
(Issued 855 AM CDT Sat Jul 22 2023)

Isolated pops-up still look plausible this afternoon as CAPE
levels build. All in all going forecast in good shape.

&&

.SHORT TERM...
(Issued 316 AM CDT Sat Jul 22 2023)

Today through Sunday night:

A shortwave trough currently passing through srn WI will exit a
little later this morning. A rogue shower will be possible until
it does so. Additional chances for showers and storms will develop
for this afternoon and tnt via the lake breeze today, and a
shortwave passage and weak sfc trough tnt. High temps will once
again reach the lower 80s.

The shortwave trough will exit Sun AM but another weak trough is
expected late, while the lake breeze may be enough to trigger a
shower or storm as well. Only slight chances for pcpn while temps
will warm into the lower to middle 80s.

Gehring

&&

.LONG TERM...
(Issued 316 AM CDT Sat Jul 22 2023)

Monday through Friday:

The upper ridge over the Desert SW is expected to expand ewd into
the central USA during this period. This will result in nwly flow
transitioning to more zonal with higher 500 mb heights over the
area. Nevertheless, weak shortwave troughs will remain in the
upper flow with continued chances for showers and storms, albeit
small on most days. The high heights and warm, moist advection
will warm sfc temps into the lower to middle 90s for Wed-Thu
inland from Lake MI, with heat index values several degrees
warmer. A weak cold front may then pass on Fri.

Gehring

&&

.AVIATION...
(Issued 855 AM CDT Sat Jul 22 2023)

VFR conditions will continue this weekend. Sct-bkn060-070 cumulus
will prevail with chances for showers and storms.

&&

.MARINE...
(Issued 316 AM CDT Sat Jul 22 2023)

Light to modest southerly winds will prevail this weekend into the
middle of next week with a weak pressure pattern over the western
Great Lakes. Scattered thunderstorms will occur at times.

Gehring

&&

.MKX WATCHES/WARNINGS/ADVISORIES...
WI...None.
LM...None.
&&

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Hazardous weather outlook, Jul 22, 3:15 AM CDT, 9 hours 5 minutes before

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In the hours before

Special weather statement, Jul 22, 12:14 PM CDT, 6 minutes before

Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
1214 PM CDT Sat Jul 22 2023

WIZ052-221745-
Sheboygan WI-
1214 PM CDT Sat Jul 22 2023

...A strong thunderstorm will impact portions of eastern Sheboygan
County through 1245 PM CDT...

At 1213 PM CDT, Doppler radar was tracking a strong thunderstorm near
Oostburg, or near Sheboygan Falls, moving northeast at 15 mph.

HAZARD...Winds in excess of 30 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Sheboygan, Plymouth, Sheboygan Falls, Oostburg, Kohler, Waldo,
Gibbsville, and Hingham.

This includes Interstate 43 between mile markers 116 and 131.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4368 8770 4361 8776 4355 8793 4375 8796
      4385 8773 4381 8773 4376 8770 4372 8771
      4370 8770
TIME...MOT...LOC 1713Z 243DEG 13KT 4365 8786

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...30 MPH

COLLAR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 12:14 PM CDT	Special Weather Statement	MKX	Sheboygan	31 min
Jul 22, 2:48 PM CDT	Special Weather Statement	MKX	Fond du Lac	27 min
Jul 22, 3:07 PM CDT	Special Weather Statement	MKX	Sheboygan	23 min
Jul 22, 3:23 PM CDT	Special Weather Statement	MKX	Ozaukee	52 min
Jul 22, 3:29 PM CDT	Special Weather Statement	MKX	Waukesha	31 min
Jul 22, 3:46 PM CDT	Special Weather Statement	MKX	Sheboygan	29 min
Jul 22, 4:26 PM CDT	Special Weather Statement	MKX	Jefferson	34 min
Jul 22, 5:03 PM CDT	Special Weather Statement	MKX	Waukesha	27 min
Jul 22, 5:28 PM CDT	Special Weather Statement	MKX	Dane	32 min
Jul 22, 5:44 PM CDT	Severe Thunderstorm Warning	MKX	Dane, Jefferson	46 min
Jul 22, 6:24 PM CDT	Special Weather Statement	MKX	Jefferson	51 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2023 Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.