Alert archive / Wisconsin / Special Weather Statements in 2017

Special Weather Statement, NWS Milwaukee, WI

August 16, 2017Dodge County, Wisconsin

NWS Milwaukee, WI issued this special weather statement at Aug 16, 2017, 11:17 PM CDT for Dodge County, Wisconsin. It was in force for 43 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 16, 2017, 11:17 PM CDT (04:17 UTC)
Expired
Aug 17, 2017, 12:00 AM CDT
In force
43 min
Issued by
NWS Milwaukee, WI

County Dodge County, WI

The radar

The Milwaukee radar (KMKX), 39 km from the middle of the area, began a volume at 04:19 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 00:00Z, 4.3 hours before the alert went out and 134 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-pSkew-T log-p diagram, Green Bay/Straub, WI at 00:00Z on 2017-08-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 00:00Z on 2017-08-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1092 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
86 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 16, 11:09 PM CDT, 8 minutes earlier.

Area forecast discussion, Aug 16, 11:09 PM CDT, 8 minutes before
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Hazardous weather outlook, Aug 16, 3:20 PM CDT, 7 hours 57 minutes before
Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
320 PM CDT Wed Aug 16 2017

WIZ046-047-051-052-056>060-062>072-172030-
Marquette-Green Lake-Fond Du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
320 PM CDT Wed Aug 16 2017

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

.DAY ONE...Tonight

Occasional thunderstorms are expected across all of southern
Wisconsin tonight as a warm front moves through the region. The
storms could produce gusty winds and heavy rainfall.

.DAYS TWO THROUGH SEVEN...Thursday through Wednesday

The chance for thunderstorms will linger into Thursday.
Thunderstorm chances will then return for Monday and Tuesday as a
cold front approaches.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

LMZ643>646-172030-
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-
320 PM CDT Wed Aug 16 2017

This Hazardous Weather Outlook is for portions of Lake Michigan.

.DAY ONE...Tonight

Occasional thunderstorms are expected across southern Wisconsin
and adjacent Lake Michigan tonight as a warm front moves through
the region. The storms could produce gusty winds.

.DAYS TWO THROUGH SEVEN...Thursday through Wednesday

Expect high waves north of Port Washington on Thursday due to
persistent south winds. A Small Craft Advisory is in effect.

Gusty westerly winds are expected Thursday evening through Friday
afternoon as low pressure moves through the western Great Lakes.
A small craft advisory may be needed.

The chance for thunderstorms will linger into Thursday.
Thunderstorm chances will then return for Monday and Tuesday as a
cold front approaches.

www.weather.gov/mkx

In the hours before

Special weather statement, Aug 16, 10:12 PM CDT, 1 hour 5 minutes before
Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
1012 PM CDT WED AUG 16 2017

WIZ064-170345-
Jefferson-
1012 PM CDT WED AUG 16 2017

...A STRONG THUNDERSTORM WILL AFFECT WESTERN JEFFERSON COUNTY...

At 1012 PM CDT, a strong thunderstorm was located near Lake Ripley,
or near Fort Atkinson, moving northeast at 25 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include...
Fort Atkinson, Jefferson, Lake Mills, Johnson Creek, Lake Ripley,
Lake Koshkonong, Milford and Helenville.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 4289 8891 4298 8901 4313 8883 4300 8868
TIME...MOT...LOC 0312Z 227DEG 20KT 4297 8891

MARQUARDT
Local storm report, Aug 16, 10:41 PM CDT, 36 minutes before
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Local storm report, Aug 16, 10:43 PM CDT, 34 minutes before
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Special weather statement, Aug 16, 10:46 PM CDT, 31 minutes before
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Local storm report, Aug 16, 10:48 PM CDT, 29 minutes before
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Special weather statement, Aug 16, 11:17 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 16, 8:20 PM CDTSpecial Weather StatementMKXGreen40 min
Aug 16, 8:36 PM CDTSpecial Weather StatementMKXRock24 min
Aug 16, 8:40 PM CDTSevere Thunderstorm WarningMKXRock50 min
Aug 16, 9:00 PM CDTSpecial Weather StatementMKXRock45 min
Aug 16, 9:24 PM CDTSpecial Weather StatementMKXRock51 min
Aug 16, 10:12 PM CDTSpecial Weather StatementMKXJefferson33 min
Aug 16, 10:35 PM CDTAreal Flood AdvisoryMKXDodge, Jefferson115 min
Aug 16, 10:46 PM CDTSpecial Weather StatementMKXJefferson29 min
Aug 17, 4:19 AM CDTBeach Hazards StatementMKXSheboygan13 hr

Nearby

Special Weather Statements in Wisconsin, 2017Every special weather statement in 2017

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.