Alert archive / Wisconsin / Special Weather Statements in 2020

Special Weather Statement, NWS Green Bay, WI

August 8, 20204 counties in Wisconsin

NWS Green Bay, WI issued this special weather statement at Aug 8, 2020, 5:18 AM CDT for 4 counties in Wisconsin. It was in force for 57 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 8, 2020, 5:18 AM CDT (10:18 UTC)
Expired: Aug 8, 2020, 6:15 AM CDT
In force: 57 min
Issued by: NWS Green Bay, WI

Counties Florence County, WI, Forest County, WI, Langlade County, WI, Lincoln County, WI

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 10.3 hours before the alert went out and 372 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: 933 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 1112 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 160 m²/s²
0-3 km storm-relative helicity: 260 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 9.3

Open this sounding in Storm Lab

The text

As transmitted.

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

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 8, 4:05 AM CDT, 1 hour 13 minutes earlier.

Area forecast discussion, Aug 8, 4:05 AM CDT, 1 hour 13 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Hazardous weather outlook, Aug 8, 4:36 AM CDT, 42 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

In the hours before

Special weather statement, Aug 8, 1:52 AM CDT, 3 hours 26 minutes before

Special Weather Statement
National Weather Service Green Bay WI
152 AM CDT Sat Aug 8 2020

WIZ005-080815-
Vilas WI-
152 AM CDT Sat Aug 8 2020

...STRONG THUNDERSTORMS ACROSS NORTHWEST WISCONSIN WILL MOVE
INTO VILAS COUNTY THIS MORNING...

At 151 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Madeline Island to near Drummond to near
Gordon to near Willow River. Movement was east at 30 mph.

The storms are expected to enter western Vilas County between 330 AM
and 430 AM CDT.

Wind gusts to around 40 mph, frequent lightning and torrential
rainfall will be possible with the storms. The eastward movement of
the storms could cause training storms resulting in torrential
rainfall and localized flooding of roads and possibly some basement
flooding.

These storms will move across Vilas County, including the following
locations...Van Vliet Hemlocks Natural Area, Land O Lakes, Nixon
Lake Natural Area, Trout Lake, Manitowish Waters, Dunn Lake Natural
Area, Presque Isle and High Lake Natural Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

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

&&

LAT...LON 4615 8915 4613 8917 4596 8970 4598 8993
      4630 8993
TIME...MOT...LOC 0643Z 282DEG 27KT 4684 9068 4637 9116 4624 9175 4636
9291

Eckberg

Special weather statement, Aug 8, 3:04 AM CDT, 2 hours 14 minutes before

Special Weather Statement
National Weather Service Green Bay WI
304 AM CDT Sat Aug 8 2020

WIZ005-010-080930-
Vilas WI-Oneida WI-
304 AM CDT Sat Aug 8 2020

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN VILAS AND NORTHWESTERN
ONEIDA COUNTIES UNTIL 430 AM CDT...

At 305 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Gile to 7 miles south of Upson to 7 miles
west of Glidden to near Chippewa Flowage East to near Stone Lake.
Movement was east at 35 mph.

The thunderstorms may produce wind gusts to around 40 mph, frequent
cloud to ground lightning strikes and torrential rainfall. Campers
should consider seeking safe shelter until the strong winds and
storms pass. Wind gusts up to 40 mph could also cause a few small
tree branches to break along with a few power outages possible.

The storms may also train over the same area for a few hours,
resulting in torrential rainfall with rainfall amounts in a few
spots of 1 to 2 inches. Localized street flooding and basement
flooding is possible due to the intense rainfall rates.

Strong thunderstorms will be near...
  Winchester around 345 AM CDT.
  Rice Creek Natural Area around 355 AM CDT.
  Lac Du Flambeau and Border Lakes Natural Area around 400 AM CDT.
  Boulder Junction around 405 AM CDT.
  Johnson Lake Barrens Natural Area around 415 AM CDT.
  Squirrel Lake around 430 AM CDT.

Other locations impacted by these storms include Van Vliet Hemlocks
Natural Area, Sayner, Land O Lakes, Nixon Lake Natural Area, Trout
Lake, Manitowish Waters, Dunn Lake Natural Area, Presque Isle, High
Lake Natural Area and Star Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

Persons in campgrounds should consider seeking sturdy shelter until
these storms pass.

&&

LAT...LON 4616 8919 4592 8969 4579 9004 4598 9005
      4598 8993 4630 8993
TIME...MOT...LOC 0759Z 277DEG 32KT 4640 9024 4627 9045 4612 9072 4598
9108 4579 9155

Eckberg

Special weather statement, Aug 8, 4:13 AM CDT, 1 hour 5 minutes before

Special Weather Statement
National Weather Service Green Bay WI
413 AM CDT Sat Aug 8 2020

WIZ005-010>012-018-019-081045-
Langlade WI-Vilas WI-Florence WI-Oneida WI-Forest WI-Lincoln WI-
413 AM CDT Sat Aug 8 2020

...STRONG THUNDERSTORMS MOVING ACROSS NORTH-CENTRAL WISCONSIN EARLY
THIS MORNING...

At 413 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 11 miles west of Paulding to near Boulder
Junction to 6 miles northeast of Lac Du Flambeau to 9 miles
northwest of Willow Lake to near Hawkins. Movement was east at 35
mph.

Wind gust to 40 mph, frequent lightning and torrential rainfall can
be expected with the storms. Campers should consider seeking shelter
until the higher winds and storms pass your area.

Intense rainfall rates of 1 to 2 inches per hour will be possible
with the storms, resulting in some urban street flooding and ponding
of water on area highways.

Strong thunderstorms will be near...
  Boulder Junction and Border Lakes Natural Area around 415 AM CDT.
  Johnson Lake Barrens Natural Area around 420 AM CDT.
  Willow Lake around 425 AM CDT.
  Rainbow Flowage around 435 AM CDT.
  Willow Reservoir around 440 AM CDT.
  Eagle River and Phelps around 455 AM CDT.
  Newbold and Kentuck Lake Campground around 505 AM CDT.
  Woodboro around 510 AM CDT.

Other locations impacted by these storms include Gagen, Luna-White
Deer Campground, Popple River Headwaters Natural Area, Bastile Lake
Natural Area, Kelly Lynn Bog Natural Area, Harshaw, Upper Buckatabon
Springs Natural Area, Otter Lake Campground, Trout Lake and Monico.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

Persons in campgrounds should consider seeking sturdy shelter until
these storms pass.

&&

LAT...LON 4614 8909 4602 8882 4598 8864 4602 8853
      4598 8842 4573 8867 4551 8907 4518 9004
      4594 9004 4598 8993 4625 8966
TIME...MOT...LOC 0910Z 289DEG 29KT 4638 8942 4617 8959 4601 8977 4579
9017 4559 9075

Eckberg

Special weather statement, Aug 8, 5:18 AM CDT, 0 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 8, 1:52 AM CDT	Special Weather Statement	GRB	Vilas	83 min
Aug 8, 3:04 AM CDT	Special Weather Statement	GRB	Vilas	86 min
Aug 8, 4:13 AM CDT	Special Weather Statement	GRB	Lincoln, Oneida, Vilas	92 min
Aug 8, 6:05 AM CDT	Special Weather Statement	GRB	Marathon, Marinette, Menominee, Shawano	40 min
Aug 8, 6:49 AM CDT	Special Weather Statement	GRB	Door, Marinette, Menominee, Oconto, Shawano	56 min

Nearby

Special Weather Statements in Wisconsin, 2020 Every special weather statement in 2020

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.