Alert archive / Wisconsin / Special Weather Statements in 2018

Special Weather Statement, NWS Milwaukee, WI

August 1, 2018Green Lake County, Wisconsin

NWS Milwaukee, WI issued this special weather statement at Aug 1, 2018, 4:21 PM CDT for Green Lake County, Wisconsin. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 1, 2018, 4:21 PM CDT (21:21 UTC)
Expired: Aug 1, 2018, 4:45 PM CDT
In force: 24 min
Issued by: NWS Milwaukee, WI

County Green Lake County, WI

The radar

The Green Bay radar (KGRB), 88 km from the middle of the area, began a volume at 21:23 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, 9.4 hours before the alert went out and 87 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: 359 J/kg
Mixed-layer CIN: -91 J/kg
Mixed-layer LCL: 1414 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: -26 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 1, 3:16 PM CDT, 1 hour 5 minutes earlier.

Area forecast discussion, Aug 1, 3:16 PM CDT, 1 hour 5 minutes before

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Hazardous weather outlook, Aug 1, 3:46 PM CDT, 35 minutes before

Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
346 PM CDT Wed Aug 1 2018

WIZ046-047-051-052-056>060-062>072-022100-
Marquette-Green Lake-Fond Du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
346 PM CDT Wed Aug 1 2018

This Hazardous Weather Outlook is for portions of east central
Wisconsin, south central Wisconsin and southeast Wisconsin.

.DAY ONE...Tonight

Isolated thunderstorms are possible this afternoon with a better
chance of thunderstorms this evening.

.DAYS TWO THROUGH SEVEN...Thursday through Wednesday

There will be more thunderstorm chances at times from Saturday
night through Monday night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

LMZ643>646-022100-
Sheboygan to Port Washington WI-
Port Washington to North Point Light WI-
North Point Light to Wind Point WI-
Wind Point WI to Winthrop Harbor IL-
346 PM CDT Wed Aug 1 2018

This Hazardous Weather Outlook is for portions of Lake Michigan.

.DAY ONE...Tonight

Isolated thunderstorms are possible this afternoon with a better
chance of thunderstorms this evening.

.DAYS TWO THROUGH SEVEN...Thursday through Wednesday

There will be more thunderstorm chances at times from Sunday
through Monday night.

www.weather.gov/mkx

In the hours before

Special weather statement, Aug 1, 2:37 PM CDT, 1 hour 44 minutes before

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Special weather statement, Aug 1, 3:30 PM CDT, 51 minutes before

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Special weather statement, Aug 1, 4:01 PM CDT, 20 minutes before

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Special weather statement, Aug 1, 4:15 PM CDT, 6 minutes before

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Special weather statement, Aug 1, 4:19 PM CDT, 2 minutes before

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Special weather statement, Aug 1, 4:21 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
421 PM CDT WED AUG 1 2018

WIZ047-051-012145-
Green Lake-Fond Du Lac-
421 PM CDT WED AUG 1 2018

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN GREEN LAKE AND
NORTHWESTERN FOND DU LAC COUNTIES...

At 421 PM CDT, a strong thunderstorm was located over Ripon, moving
east at 25 mph.

Winds in excess of 30 mph and pea size hail are possible with this
storm.

Locations impacted include...
Ripon, Berlin, Rosendale and West Rosendale.

LAT...LON 4390 8888 4389 8852 4373 8852 4378 8893
      4396 8893 4396 8889
TIME...MOT...LOC 2121Z 270DEG 23KT 4387 8883

HENTZ

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 1, 1:40 PM CDT	Special Weather Statement	MKX	Milwaukee	20 min
Aug 1, 2:02 PM CDT	Special Weather Statement	MKX	Kenosha	13 min
Aug 1, 2:25 PM CDT	Special Weather Statement	MKX	Kenosha	20 min
Aug 1, 2:37 PM CDT	Special Weather Statement	MKX	Kenosha	23 min
Aug 1, 2:54 PM CDT	Special Marine Warning	MKX		41 min
Aug 1, 3:30 PM CDT	Special Weather Statement	MKX	Jefferson	30 min
Aug 1, 4:01 PM CDT	Special Weather Statement	MKX	Waukesha	29 min
Aug 1, 4:15 PM CDT	Special Weather Statement	MKX	Waukesha	30 min
Aug 1, 4:19 PM CDT	Special Weather Statement	MKX	Waukesha	26 min
Aug 1, 4:31 PM CDT	Special Weather Statement	MKX	Waukesha	14 min
Aug 1, 4:34 PM CDT	Special Weather Statement	MKX	Waukesha	26 min
Aug 1, 4:37 PM CDT	Special Marine Warning	MKX		38 min
Aug 1, 4:49 PM CDT	Special Weather Statement	MKX	Milwaukee	26 min
Aug 1, 6:41 PM CDT	Special Weather Statement	MKX	Kenosha, Racine	64 min

Nearby

Special Weather Statements in Wisconsin, 2018 Every special weather statement in 2018

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.