Alert archive / Wisconsin / Special Weather Statements in 2017

Special Weather Statement, NWS Green Bay, WI

July 18, 2017Vilas County, Wisconsin

NWS Green Bay, WI issued this special weather statement at Jul 18, 2017, 12:19 PM CDT for Vilas County, Wisconsin. It was in force for 71 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: Jul 18, 2017, 12:19 PM CDT (17:19 UTC)
Expired: Jul 18, 2017, 1:30 PM CDT
In force: 71 min
Issued by: NWS Green Bay, WI

County Vilas County, WI

The radar

The Marquette radar (KMQT), 152 km from the middle of the area, began a volume at 17:20 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, 5.3 hours before the alert went out and 195 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1109 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 105 m²/s²
0-3 km storm-relative helicity: 132 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 Green Bay, WI wrote its last area forecast discussion before this special weather statement went out at Jul 18, 11:44 AM CDT, 35 minutes earlier.

Area forecast discussion, Jul 18, 11:44 AM CDT, 35 minutes before

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Hazardous weather outlook, Jul 18, 3:38 AM CDT, 8 hours 41 minutes before

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In the hours before

Special weather statement, Jul 18, 10:55 AM CDT, 1 hour 24 minutes before

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Special weather statement, Jul 18, 11:15 AM CDT, 1 hour 4 minutes before

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Special weather statement, Jul 18, 11:42 AM CDT, 37 minutes before

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Special weather statement, Jul 18, 12:15 PM CDT, 4 minutes before

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Special weather statement, Jul 18, 12:19 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Green Bay WI
1219 PM CDT TUE JUL 18 2017

WIZ005-181830-
Vilas WI-
1219 PM CDT TUE JUL 18 2017

...THUNDERSTORMS DEVELOPING ACROSS VILAS COUNTY...

At 1218 PM CDT, Doppler radar was tracking a strong thunderstorm 12
miles south of Boulder Junction, or 15 miles west of Eagle River,
moving northeast at 30 mph. Additional thunderstorms were also
developing near Boulder Junction.

Half inch hail and winds in excess of 30 mph will be possible with
these storms.

Locations impacted include...
Eagle River, Lac Du Flambeau, Phelps, Boulder Junction, Winchester,
Arbor Vitae, Woodruff, Conover, Presque Isle and Manitowish Waters.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may
lead to localized flooding. Do not drive your vehicle through
flooded roadways.

Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4614 8909 4607 8893 4598 8893 4598 8905
      4590 8905 4590 8918 4586 8918 4586 8930
      4590 8930 4590 9004 4598 9005 4598 8993
      4630 8993
TIME...MOT...LOC 1718Z 239DEG 28KT 4593 8958

Bersch

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 10:55 AM CDT	Special Weather Statement	GRB	Lincoln, Marathon, Wood	35 min
Jul 18, 11:15 AM CDT	Special Weather Statement	GRB	Marathon	60 min
Jul 18, 11:42 AM CDT	Special Weather Statement	GRB	Portage, Wood	93 min
Jul 18, 12:15 PM CDT	Special Weather Statement	GRB	Langlade, Menominee, Shawano	75 min
Jul 18, 1:35 PM CDT	Special Weather Statement	GRB	Florence, Marinette, Menominee, Oconto	40 min
Jul 18, 3:14 PM CDT	Special Weather Statement	GRB	Wood	76 min
Jul 18, 3:51 PM CDT	Special Weather Statement	GRB	Florence, Forest, Langlade, Lincoln, Marathon, Menominee and 5 more	69 min
Jul 18, 4:43 PM CDT	Special Weather Statement	GRB	Shawano	77 min
Jul 18, 5:00 PM CDT	Special Weather Statement	GRB	Florence, Langlade, Marinette, Menominee, Oconto, Outagamie and 6 more	90 min
Jul 18, 5:32 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Oconto, Outagamie, Shawano, Waupaca	43 min
Jul 18, 5:35 PM CDT	Special Marine Warning	GRB		85 min
Jul 18, 5:45 PM CDT	Special Weather Statement	GRB	Outagamie	45 min
Jul 18, 6:12 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Outagamie	28 min
Jul 18, 6:21 PM CDT	Special Marine Warning	GRB		54 min
Jul 18, 6:21 PM CDT	Special Weather Statement	GRB	Marinette	39 min
Jul 18, 6:33 PM CDT	Special Weather Statement	GRB	Calumet, Winnebago	57 min
Jul 18, 6:35 PM CDT	Special Weather Statement	GRB	Door	55 min
Jul 18, 6:37 PM CDT	Special Marine Warning	GRB		83 min

Nearby

Special Weather Statements in Wisconsin, 2017 Every 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.