Alert archive / Wisconsin / Areal Flood Advisories in 2018

Areal Flood Advisory 21, NWS Milwaukee, WI

June 30, 2018Dane County, Wisconsin

NWS Milwaukee, WI issued this areal flood advisory at Jun 30, 2018, 9:22 PM CDT for Dane County, Wisconsin. It was in force for 34 min.

The area

The counties it named.

The facts

Issued: Jun 30, 2018, 9:22 PM CDT (02:22 UTC)
Expired: Jun 30, 2018, 9:56 PM CDT
In force: 34 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon

County Dane County, WI

The radar

The Milwaukee radar (KMKX), 71 km from the middle of the area, began a volume at 02:24 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 00:00Z, 2.4 hours before the alert went out and 184 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: 3950 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 1125 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood advisory 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 advisory went out at Jun 30, 8:56 PM CDT, 26 minutes earlier.

Area forecast discussion, Jun 30, 8:56 PM CDT, 26 minutes before

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Hazardous weather outlook, Jun 30, 9:10 PM CDT, 12 minutes before

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In the hours before

Local storm report, Jun 30, 7:21 PM CDT, 2 hours 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
721 PM CDT SAT JUN 30 2018

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

0700 PM     TSTM WND DMG     MONTELLO                43.79N 89.33W
06/30/2018                   MARQUETTE          WI   911 CALL CENTER

            TREES AND POWER LINES DOWN ALL OVER
            MARQUETTE COUNTY. TIME ESTIMATED FROM RADAR.

&&

WOOD

Special weather statement, Jun 30, 7:22 PM CDT, 2 hours before

Special Weather Statement
National Weather Service Milwaukee/Sullivan WI
722 PM CDT SAT JUN 30 2018

WIZ047-051-057-058-063-064-010100-
Dodge-Columbia-Green Lake-Fond Du Lac-Jefferson-Dane-
722 PM CDT SAT JUN 30 2018

...A LINE OF SHOWERS WILL AFFECT GREEN LAKE...WESTERN FOND DU LAC...
EASTERN COLUMBIA...NORTHEASTERN DANE...NORTHWESTERN JEFFERSON AND
DODGE COUNTIES...

At 720 PM CDT, radar indicated showers and thunderstorms located
along a line extending from near Redgranite to near Randolph to
Waunakee. Movement was east at 40 mph.

Wind gusts up to 50 mph are possible with these showers.

Locations impacted include...
Madison, Fond Du Lac, Sun Prairie, Middleton, Beaver Dam, Waunakee,
Waupun, Ripon, Windsor, Mayville, North Fond Du Lac, Columbus,
Marshall, Horicon, Waterloo, Juneau, Deforest, Berlin, Lomira and
Randolph.

If you are on a lake, get out of the water and move indoors or
inside a vehicle. Move to safe shelter now! Do not be caught on the
water.

LAT...LON 4390 8888 4389 8840 4354 8841 4312 8891
      4310 8961 4358 8908 4398 8917 4398 8889
TIME...MOT...LOC 0020Z 274DEG 35KT 4398 8908 4358 8899 4316 8946

BOXELL

Local storm report, Jun 30, 8:17 PM CDT, 1 hour 5 minutes before

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Local storm report, Jun 30, 8:30 PM CDT, 52 minutes before

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Special weather statement, Jun 30, 8:31 PM CDT, 51 minutes before

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Local storm report, Jun 30, 9:05 PM CDT, 17 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 7:22 PM CDT	Special Weather Statement	MKX	Dodge, Fond du Lac, Green Lake	38 min
Jun 30, 7:38 PM CDT	Severe Thunderstorm Warning	MKX	Dane, Green, Iowa, Lafayette	52 min
Jun 30, 8:19 PM CDT	Areal Flood Advisory	MKX	Green, Lafayette	3 hr
Jun 30, 8:31 PM CDT	Special Weather Statement	MKX	Jefferson, Rock	44 min
Jun 30, 10:09 PM CDT	Special Weather Statement	MKX	Dane, Green	21 min
Jun 30, 11:19 PM CDT	Special Weather Statement	MKX	Green	26 min
Jul 1, 2:14 AM CDT	Small Craft Advisory	MKX		20 hr
Jul 1, 1:10 PM CDT	Severe Thunderstorm Warning	MKX	Marquette	35 min
Jul 1, 1:37 PM CDT	Special Weather Statement	MKX	Green Lake	23 min
Jul 1, 1:51 PM CDT	Special Weather Statement	MKX	Walworth	39 min
Jul 1, 1:55 PM CDT	Special Weather Statement	MKX	Waukesha	35 min
Jul 1, 2:04 PM CDT	Special Weather Statement	MKX	Rock	41 min
Jul 1, 2:17 PM CDT	Special Weather Statement	MKX	Jefferson	28 min
Jul 1, 2:20 PM CDT	Special Weather Statement	MKX	Waukesha	25 min
Jul 1, 2:33 PM CDT	Special Weather Statement	MKX	Waukesha	42 min
Jul 1, 2:36 PM CDT	Special Weather Statement	MKX	Fond du Lac	39 min
Jul 1, 2:39 PM CDT	Special Weather Statement	MKX	Jefferson	51 min
Jul 1, 2:43 PM CDT	Severe Thunderstorm Warning	MKX	Milwaukee, Ozaukee, Washington, Waukesha	47 min
Jul 1, 2:47 PM CDT	Special Marine Warning	MKX		58 min
Jul 1, 2:51 PM CDT	Special Weather Statement	MKX	Washington	24 min
Jul 1, 2:56 PM CDT	Special Weather Statement	MKX	Jefferson	49 min
Jul 1, 3:11 PM CDT	Special Weather Statement	MKX	Sheboygan	34 min
Jul 1, 3:18 PM CDT	Special Weather Statement	MKX	Dodge	27 min
Jul 1, 3:23 PM CDT	Special Marine Warning	MKX		37 min
Jul 1, 3:23 PM CDT	Severe Thunderstorm Warning	MKX	Sheboygan	19 min
Jul 1, 3:26 PM CDT	Severe Thunderstorm Warning	MKX	Dodge, Fond du Lac, Washington	36 min
Jul 1, 3:30 PM CDT	Special Weather Statement	MKX	Milwaukee	30 min
Jul 1, 3:32 PM CDT	Special Weather Statement	MKX	Milwaukee	28 min
Jul 1, 3:36 PM CDT	Special Weather Statement	MKX	Waukesha	39 min
Jul 1, 3:41 PM CDT	Special Marine Warning	MKX		64 min
Jul 1, 3:41 PM CDT	Severe Thunderstorm Warning	MKX	Milwaukee, Ozaukee	19 min
Jul 1, 3:44 PM CDT	Special Weather Statement	MKX	Walworth	31 min
Jul 1, 3:51 PM CDT	Special Weather Statement	MKX	Sheboygan	39 min
Jul 1, 4:12 PM CDT	Special Marine Warning	MKX		33 min
Jul 1, 4:13 PM CDT	Severe Thunderstorm Warning	MKX	Kenosha, Racine	17 min
Jul 1, 4:22 PM CDT	Special Weather Statement	MKX	Sheboygan	23 min
Jul 1, 4:41 PM CDT	Special Weather Statement	MKX	Milwaukee	34 min
Jul 1, 4:47 PM CDT	Special Marine Warning	MKX		58 min

Nearby

Areal Flood Advisories in Wisconsin, 2018 Every areal flood advisory 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.