Alert archive / Wisconsin / Special Weather Statements in 2018

Special Weather Statement, NWS Green Bay, WI

August 3, 2018Wood County, Wisconsin

NWS Green Bay, WI issued this special weather statement at Aug 3, 2018, 11:38 AM CDT for Wood County, Wisconsin. It was in force for 67 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 3, 2018, 11:38 AM CDT (16:38 UTC)
Expired: Aug 3, 2018, 12:45 PM CDT
In force: 67 min
Issued by: NWS Green Bay, WI

County Wood County, WI

The radar

The La Crosse radar (KARX), 135 km from the middle of the area, began a volume at 16:42 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, 4.6 hours before the alert went out and 168 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: 796 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 101 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 Aug 3, 7:59 AM CDT, 3 hours 39 minutes earlier.

Area forecast discussion, Aug 3, 7:59 AM CDT, 3 hours 39 minutes before

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Hazardous weather outlook, Aug 3, 10:08 AM CDT, 1 hour 30 minutes before

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In the hours before

Special weather statement, Aug 3, 5:58 AM CDT, 5 hours 40 minutes before

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Special weather statement, Aug 3, 6:50 AM CDT, 4 hours 48 minutes before

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Special weather statement, Aug 3, 8:13 AM CDT, 3 hours 25 minutes before

Special Weather Statement
National Weather Service Green Bay WI
813 AM CDT Fri Aug 3 2018

WIZ005-010>013-018>021-030-031-035>039-045-048>050-073-074-031430-
Vilas-Oneida-Forest-Florence-Northern Marinette County-Lincoln-
Langlade-Menominee-Northern Oconto County-Marathon-Shawano-Wood-
Portage-Waupaca-Outagamie-Brown-Waushara-Winnebago-Calumet-
Manitowoc-Southern Marinette County-Southern Oconto County-
813 AM CDT Fri Aug 3 2018

...VISIBILITIES IMPROVING ACROSS MOST OF THE AREA...BUT PATCHY
DENSE FOG MAY PERSIST IN LOW-LYING AREAS FOR ANOTHER HOUR OR
TWO...

The widespread dense fog that developed over portions of
central and north-central Wisconsin had begun to lift, and a
steady improvement in the conditions across most of the area is
expected during the next hour or two. However, patches of dense
fog with visibilities down as low as a few hundred feet will
probably linger a bit longer in low-lying areas and near lakes,
streams, and rivers.

Motorists should remain alert for sudden variations in the
visibility due to lingering patches of dense fog. Be sure to use
low-beam headlights until the fog is completely gone. Be sure to drive
at a speed that will allow you to safely stop if you unexpectedly
encounter an object or animal on the road.

Skowronski

Special weather statement, Aug 3, 11:38 AM CDT, 0 minutes before

Special Weather Statement
National Weather Service Green Bay WI
1138 AM CDT FRI AUG 3 2018

WIZ030-035-031745-
Marathon WI-Wood WI-
1138 AM CDT FRI AUG 3 2018

...STRONG THUNDERSTORMS APPROACHING THE AREA FROM THE WEST...

At 1137 AM CDT, Doppler radar was tracking strong thunderstorms
along a line extending from near Couderay to near Eau Claire to 40
miles northwest of La Crosse. The thunderstorms were moving to the
east around 35 mph.

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

Strong thunderstorms will be near...
  Marshfield and Spencer around 1245 PM CDT.

Other locations impacted by these storms include Sandhill Wildlife
Area, North Wood County Park, Rozellville, Cherokee, Auburndale,
Stratford, March Rapids, Dexterville, Athens and Hewitt.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4503 9031 4504 9020 4512 9019 4512 9004
      4452 8992 4425 9010 4425 9032
TIME...MOT...LOC 1633Z 274DEG 33KT 4573 9136 4481 9123 4438 9145

Eckberg

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 2, 9:35 PM CDT	Dense Fog Advisory	GRB	Lincoln, Marathon, Oneida, Portage, Vilas, Waupaca and 2 more	10 hr
Aug 3, 12:11 PM CDT	Special Weather Statement	GRB	Lincoln, Marathon, Wood	79 min
Aug 3, 1:27 PM CDT	Severe Thunderstorm Warning	GRB	Lincoln	50 min
Aug 3, 2:00 PM CDT	Special Weather Statement	GRB	Oneida, Vilas	30 min
Aug 3, 2:47 PM CDT	Special Weather Statement	GRB	Langlade, Oneida, Vilas	58 min
Aug 3, 2:56 PM CDT	Beach Hazards Statement	GRB	Door	55 hr
Aug 3, 2:56 PM CDT	Small Craft Advisory	GRB		55 hr

Nearby

Special Weather Statements in Wisconsin, 2018 Every special weather statement 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.