Alert archive / Wisconsin / Areal Flood Warnings in 2018

Areal Flood Warning 8, NWS Milwaukee, WI

August 20, 2018Dane County, Wisconsin

NWS Milwaukee, WI issued this areal flood warning at Aug 20, 2018, 11:56 PM CDT for Dane County, Wisconsin. It was in force for 30 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 20, 2018, 11:56 PM CDT (04:56 UTC)
Expired: Aug 22, 2018, 6:00 AM CDT
In force: 30 hr
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Flood severity: None

County Dane County, WI

The radar

The Milwaukee radar (KMKX), 71 km from the middle of the area, began a volume at 04:59 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 forecasters said that day

The local office's own words before this areal flood 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 areal flood warning went out at Aug 20, 10:12 PM CDT, 1 hour 44 minutes earlier.

Area forecast discussion, Aug 20, 10:12 PM CDT, 1 hour 44 minutes before

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Hazardous weather outlook, Aug 20, 8:00 PM CDT, 3 hours 56 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Milwaukee/Sullivan WI
800 PM CDT Mon Aug 20 2018

WIZ046-047-051-052-056>060-062>072-220100-
Marquette-Green Lake-Fond Du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
800 PM CDT Mon Aug 20 2018

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

.DAY ONE...Tonight

Showers and thunderstorms producing heavy rainfall will continue
tonight. A Flash Flood Watch remains in effect from through late
tonight for most of south central Wisconsin, and through middle
morning Tuesday for most of southeast Wisconsin. The Flash Flood
Watch includes the Madison and Milwaukee metro areas.

1 to 4 inches of rain is forecast, with local higher amounts.
The potential exists for the heavy rain axis to be across eastern
Wisconsin, and could also affect the same areas that received
heavy rains at the end of last week.

There is a high swim risk for dangerous currents on the beaches
of Lake Michigan. A Beach Hazards Statement is in effect.

.DAYS TWO THROUGH SEVEN...Tuesday through Monday

The high swim risk and Beach Hazards Statement will continue into
Tuesday evening.

There is a small chance of thunderstorms Tuesday afternoon. There
are chances of thunderstorms Friday into Saturday morning, and
again on Sunday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed, but rainfall and flooding
reports are appreciated.

LMZ643>646-220100-
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-
800 PM CDT Mon Aug 20 2018

This Hazardous Weather Outlook is for portions of Lake Michigan.

.DAY ONE...Tonight

Periods of thunderstorms are expected tonight.

A Small Craft Advisory is in effect for gusty winds and building
waves.

.DAYS TWO THROUGH SEVEN...Tuesday through Monday

The Small Craft Advisory will continue through Tuesday evening,
for gusty winds and high waves.

There is a small chance of thunderstorms Tuesday afternoon. There
are chances of thunderstorms Friday into Saturday morning.

www.weather.gov/mkx

MBK

In the hours before

Local storm report, Aug 20, 10:08 PM CDT, 1 hour 48 minutes before

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Local storm report, Aug 20, 10:09 PM CDT, 1 hour 47 minutes before

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Local storm report, Aug 20, 10:47 PM CDT, 1 hour 9 minutes before

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Local storm report, Aug 20, 10:49 PM CDT, 1 hour 7 minutes before

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Local storm report, Aug 20, 11:11 PM CDT, 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1111 PM CDT MON AUG 20 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1015 PM     FLASH FLOOD      2 SSW MIDDLETON         43.08N 89.53W
08/20/2018                   DANE               WI   BROADCAST MEDIA

            RELAYED REPORT OF 30 PEOPLE FROM A HEALTH
            CLINIC BEING EVACUATED, REQUESTING A WATER
            RESCUE AND BUS.

&&

DDV

Local storm report, Aug 20, 11:22 PM CDT, 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1122 PM CDT MON AUG 20 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1100 PM     HEAVY RAIN       2 S MIDDLETON           43.07N 89.51W
08/20/2018  M10.23 INCH      DANE               WI   COCORAHS

&&

DDV

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 20, 7:07 PM CDT	Areal Flood Advisory	MKX	Green, Lafayette, Rock	3 hr
Aug 20, 8:26 PM CDT	Flash Flood Warning	MKX	Dane	3 hr
Aug 20, 9:43 PM CDT	River Flood Warning	MKX	Green, Rock	6 days
Aug 20, 9:45 PM CDT	River Flood Watch	MKX	Lafayette	14 hr
Aug 20, 10:38 PM CDT	Areal Flood Advisory	MKX	Columbia, Dane, Dodge, Jefferson, Milwaukee, Washington and 1 more	3 hr
Aug 21, 12:08 AM CDT	River Flood Warning	MKX	Dane	22 hr
Aug 21, 12:11 AM CDT	Areal Flood Advisory	MKX	Columbia, Dodge, Fond du Lac, Green Lake, Marquette, Milwaukee and 4 more	3 hr
Aug 21, 5:24 AM CDT	Special Marine Warning	MKX		66 min
Aug 21, 6:16 AM CDT	Special Marine Warning	MKX		59 min
Aug 21, 6:38 AM CDT	Special Marine Warning	MKX		37 min
Aug 21, 11:41 AM CDT	River Flood Warning	MKX	Lafayette	28 hr
Aug 21, 5:26 PM CDT	Areal Flood Warning	MKX	Dane	23 hr

Nearby

Areal Flood Warnings in Wisconsin, 2018 Every areal flood warning 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; radar from the NEXRAD Level II archive.