Alert archive / Wisconsin / Special Weather Statements in 2019

Special Weather Statement, NWS Milwaukee, WI

October 1, 2019Iowa County, Wisconsin

NWS Milwaukee, WI issued this special weather statement at Oct 1, 2019, 12:06 PM CDT for Iowa 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: Oct 1, 2019, 12:06 PM CDT (17:06 UTC)
Expired: Oct 1, 2019, 12:30 PM CDT
In force: 24 min
Issued by: NWS Milwaukee, WI

County Iowa County, WI

The radar

The Milwaukee radar (KMKX), 116 km from the middle of the area, began a volume at 17:08 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

Davenport, (KDVN), launched 12:00Z, 5.1 hours before the alert went out and 169 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: 616 J/kg
Mixed-layer CIN: -161 J/kg
Mixed-layer LCL: 1038 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 92 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

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 Oct 1, 9:21 AM CDT, 2 hours 45 minutes earlier.

Area forecast discussion, Oct 1, 9:21 AM CDT, 2 hours 45 minutes before

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Hazardous weather outlook, Oct 1, 5:47 AM CDT, 6 hours 19 minutes before

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In the hours before

Special weather statement, Oct 1, 9:48 AM CDT, 2 hours 18 minutes before

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Special weather statement, Oct 1, 11:31 AM CDT, 35 minutes before

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Local storm report, Oct 1, 11:43 AM CDT, 23 minutes before

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Special weather statement, Oct 1, 11:44 AM CDT, 22 minutes before

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Special weather statement, Oct 1, 11:56 AM CDT, 10 minutes before

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Special weather statement, Oct 1, 12:06 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
1206 PM CDT Tue Oct 1 2019

WIZ056-057-062-063-011730-
Columbia-Iowa-Sauk-Dane-
1206 PM CDT Tue Oct 1 2019

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN IOWA...SOUTHEASTERN
SAUK AND NORTHWESTERN DANE COUNTIES...

At 1206 PM CDT, a strong thunderstorm was located near Dodgeville,
moving northeast at 60 mph.

Winds of 30 to 40 mph and half inch hail are possible with this
storm.

Locations impacted include...
Middleton, Dodgeville, Prairie Du Sac, Sauk City, Lake Wisconsin,
Cross Plains, Mazomanie, Spring Green, Black Earth, Barneveld, Blue
Mounds, Arena, Ridgeway, Governor Dodge St Park, Blue Mound St Park
and Marxville.

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

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4293 9021 4310 9031 4337 8970 4313 8942
TIME...MOT...LOC 1706Z 246DEG 52KT 4305 9017

STUMPF

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 1, 3:51 AM CDT	Small Craft Advisory	MKX		51 hr
Oct 1, 9:07 AM CDT	Special Weather Statement	MKX	Iowa	23 min
Oct 1, 9:30 AM CDT	Special Weather Statement	MKX	Dane, Sauk	45 min
Oct 1, 9:48 AM CDT	Special Weather Statement	MKX	Fond du Lac	27 min
Oct 1, 11:31 AM CDT	Special Weather Statement	MKX	Jefferson	29 min
Oct 1, 11:44 AM CDT	Special Weather Statement	MKX	Ozaukee, Sheboygan	31 min
Oct 1, 11:56 AM CDT	Special Weather Statement	MKX	Waukesha	49 min
Oct 1, 12:28 PM CDT	Areal Flood Advisory	MKX	Sheboygan	2 hr
Oct 1, 12:47 PM CDT	Special Weather Statement	MKX	Milwaukee	28 min
Oct 1, 4:07 PM CDT	River Flood Warning	MKX	Lafayette	4 days
Oct 1, 4:07 PM CDT	River Flood Warning	MKX	Waukesha	4 days
Oct 1, 4:07 PM CDT	River Flood Warning	MKX	Green, Rock	7 days
Oct 1, 6:51 PM CDT	Areal Flood Advisory	MKX	Columbia, Dodge, Fond du Lac, Green Lake, Marquette, Sauk and 2 more	3 hr

Nearby

Special Weather Statements in Wisconsin, 2019 Every special weather statement in 2019

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.