Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 17, NWS Green Bay, WI

June 17, 2018Marinette County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jun 17, 2018, 8:17 PM CDT for Marinette County, Wisconsin. It was in force for 31 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 17, 2018, 8:17 PM CDT (01:17 UTC)
Expired: Jun 17, 2018, 8:48 PM CDT
In force: 31 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Marinette County, WI

What was reported inside it

Time	Report	Where	Remark
Jun 17, 8:23 PM CDT	TSTM WND DMG	Crivitz, WI	FEW TREES DOWN IN CRIVITZ. TIME ESTIMATED BY RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 6 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 17, 3:46 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 1.3 hours before the alert went out and 95 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: 1303 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1550 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 87 m²/s²
0-3 km storm-relative helicity: 181 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 4.6

Open this sounding in Storm Lab

The text

As transmitted.

076 
WUUS53 KGRB 180117
SVRGRB
WIC075-180200-
/O.NEW.KGRB.SV.W.0017.180618T0117Z-180618T0200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Green Bay WI
817 PM CDT SUN JUN 17 2018

The National Weather Service in Green Bay has issued a

* Severe Thunderstorm Warning for...
  Central Marinette County in northeastern Wisconsin...

* Until 900 PM CDT.

* At 816 PM CDT, a severe thunderstorm was located near Wausaukee, or
  18 miles northwest of Menominee, moving east at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Crivitz, Wausaukee, Middle Inlet, Loomis, Lake Noquebay and
  Mcallister.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.

&&

LAT...LON 4526 8771 4521 8773 4520 8774 4518 8774
      4519 8806 4537 8805 4538 8787 4535 8789
      4535 8788 4537 8787 4534 8784 4535 8783
      4535 8776 4538 8772 4538 8767 4534 8765
TIME...MOT...LOC 0116Z 269DEG 41KT 4529 8792 

HAIL...<.75IN
WIND...60MPH
 
$$

RDM

2 follow-up statements

995 
WWUS53 KGRB 180140
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
840 PM CDT SUN JUN 17 2018

WIC075-180200-
/O.CON.KGRB.SV.W.0017.000000T0000Z-180618T0200Z/
Marinette WI-
840 PM CDT SUN JUN 17 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT
FOR CENTRAL MARINETTE COUNTY...

At 840 PM CDT, a severe thunderstorm was located 8 miles northwest of
Menominee, moving east at 25 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Loomis.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

&&

LAT...LON 4519 8774 4518 8775 4518 8779 4519 8800
      4525 8789 4527 8785 4529 8783 4530 8781
      4530 8776 4531 8774 4531 8771 4532 8769
      4532 8766 4526 8771 4521 8773 4520 8774
TIME...MOT...LOC 0140Z 290DEG 24KT 4523 8771 

HAIL...<.75IN
WIND...60MPH
 
$$

RDM

023 
WWUS53 KGRB 180148
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
848 PM CDT SUN JUN 17 2018

WIC075-180157-
/O.CAN.KGRB.SV.W.0017.000000T0000Z-180618T0200Z/
Marinette WI-
848 PM CDT SUN JUN 17 2018

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MARINETTE COUNTY IS
CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.  However gusty winds are still possible with this
thunderstorm.

A Severe Thunderstorm Watch remains in effect until midnight CDT for
northeastern Wisconsin.

LAT...LON 4519 8774 4518 8775 4518 8779 4519 8800
      4525 8789 4527 8785 4529 8783 4530 8781
      4530 8776 4531 8774 4531 8771 4532 8769
      4532 8766 4526 8771 4521 8773 4520 8774
TIME...MOT...LOC 0147Z 269DEG 41KT 4523 8764 

$$

RDM

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jun 17, 6:51 PM CDT, 1 hour 26 minutes earlier.

Area forecast discussion, Jun 17, 6:51 PM CDT, 1 hour 26 minutes before

Area Forecast Discussion
National Weather Service Green Bay WI
651 PM CDT Sun Jun 17 2018

Updated aviation portion for 00Z TAF issuance

.SHORT TERM...Tonight and Monday
Issued at 322 PM CDT Sun Jun 17 2018

Flood and severe weather potential are the main
concerns tonight and early Monday.

A cold front will move very slowly across the area tonight and
early Monday. Very warm and humid air ahead of the front will
provide showers and storms with the potential for producing very
heavy rains, especially given the slow movement. We added some
counties to the flash flood watch in northern counties. The main
severe storm threat should be strong winds, as temperatures aloft
are not cold for large hail. A brief tornado is not out of the
question along the front though is not expected.

There are model differences about how quickly the front and
associated showers and storms exit the area tomorrow. That will
have an effect on temperatures.

.LONG TERM...Monday Night Through Sunday
Issued at 322 PM CDT Sun Jun 17 2018

Zonal pattern at 500mb will dominate the weather pattern at the
beginning of the period. A northwest flow pattern is expected by
the weekend, allowing for low humidity and seasonable temperatures
as Canadian high pressure moves across the area. Temperatures on
some nights could fall into the 40s at our typical cold spots
across the north later this week.

The cold front will gradually push south of the area Monday
night. However, additional complexes of showers and thunderstorms
are expected which may clip our southern counties Monday night
into Tuesday before the front pushes far enough south of the
area. Canadian high pressure system should dominate the weather
pattern into Friday morning. The next chance of showers and storms
are possible next Friday into the weekend, although confidence
is low in the timing of the rain chances. Some adjustments were
made to max temperatures to account for our warmer biased sites.
Did lower minimum temperatures on a few nights later in the week
across the north to account for our typical cold spots.
&&

.AVIATION...for 00Z TAF Issuance
Issued at 639 PM CDT Sun Jun 17 2018

Strong and locally severe thunderstorms with gusty winds and
torrential rain were ongoing over north central and far northeast
WI early this evening. These will continue to sag southeast
across the region this evening and overnight, with the
precipitation eventually shifting south of the region on Monday.
The combination of steady rains and the arrival of a cold front
will cause ceilings to lower to MVFR/local IFR overnight into
early Monday, but some improvement should occur by midday Monday.

LLWS will occur this evening, then taper off overnight. Southwest
winds will shift north to northeast after the cold front passes.

&&

.GRB WATCHES/WARNINGS/ADVISORIES...
Flash Flood Watch through Monday afternoon for WIZ005-010>013-
018-019-021-030-073.
&&

SHORT TERM.....RDM
LONG TERM......Eckberg
AVIATION.......Kieckbusch

Hazardous weather outlook, Jun 17, 3:12 PM CDT, 5 hours 5 minutes before

Hazardous Weather Outlook
National Weather Service Green Bay WI
312 PM CDT Sun Jun 17 2018

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-182015-
Vilas-Oneida-Forest-Florence-Northern Marinette County-Lincoln-
Langlade-Menominee-Northern Oconto County-Door-Marathon-Shawano-
Wood-Portage-Waupaca-Outagamie-Brown-Kewaunee-Waushara-Winnebago-
Calumet-Manitowoc-Southern Marinette County-
Southern Oconto County-
312 PM CDT Sun Jun 17 2018

This Hazardous Weather Outlook is for north-central and northeast
Wisconsin.

.DAY ONE...Tonight

Thunderstorms are expected across the area later this afternoon
and tonight. A few storms could become severe, especially north
of Highway 10. Damaging winds are the main severe weather threat.

A flash flood watch is in effect for much of central and northern
Wisconsin, where recent heavy rains have left the ground nearly
saturated and rivers and stream levels high.

.DAYS TWO THROUGH SEVEN...Monday through Sunday

Scattered thunderstorms are forecast for Monday morning. A few
strong storms with gusty winds and heavy rain are possible early.

There is a chance of thunderstorms on Friday into next weekend.
It is too early to determine if any of these storms would become
severe.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed tonight.

LMZ521-522-541>543-182015-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
312 PM CDT Sun Jun 17 2018

This Hazardous Weather Outlook is for portions of northwest Lake
Michigan and the waters of Green Bay.

.DAY ONE...Tonight

Scattered thunderstorms will pose a hazard to boaters on the lake
and bay at times tonight. Dense fog is also possible at times.

.DAYS TWO THROUGH SEVEN...Monday through Sunday

There is a chance of thunderstorms into Monday, and again late in
the week.

RDM/Eckberg

In the hours before

Local storm report, Jun 17, 6:21 PM CDT, 1 hour 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
621 PM CDT SUN JUN 17 2018

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

0605 PM     TSTM WND GST     EAGLE RIVER             45.91N 89.25W
06/17/2018  M51 MPH          VILAS              WI   AWOS

&&

BERSCH

Local storm report, Jun 17, 6:53 PM CDT, 1 hour 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
653 PM CDT SUN JUN 17 2018

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

0602 PM     TSTM WND GST     EAGLE RIVER             45.91N 89.25W
06/17/2018  M52 MPH          VILAS              WI   PUBLIC

            MEASURED GUST. TREE BRANCHES AND DEBRIS OVER THE ROADS.

&&

KLB

Special weather statement, Jun 17, 7:06 PM CDT, 1 hour 11 minutes before

Special Weather Statement
National Weather Service Green Bay WI
706 PM CDT SUN JUN 17 2018

WIZ018-019-030-035-036-180045-
Langlade WI-Marathon WI-Wood WI-Portage WI-Lincoln WI-
706 PM CDT SUN JUN 17 2018

...SIGNIFICANT WEATHER ADVISORY FOR WOOD...PORTAGE...LINCOLN...
MARATHON AND WESTERN LANGLADE COUNTIES UNTIL 745 PM CDT...

At 706 PM CDT, Doppler radar indicated strong thunderstorms across
central Lincoln county into northwest Langlade County near Parrish.
This cluster of thunderstorms will be capable of producing gusty
winds to around 40 mph, pea size hail and brief torrential rains.

A cluster of strong to severe thunderstorms extended near Neilsville
in Clark County to 10 miles west of Medford. This cluster of storms
will move into western Marathon and northwest Wood County by 745 pm.
Stay tuned for later statements or warnings on this cluster of
thunderstorms.

Locations that may be impacted by the thunderstorms include...
Wausau, Stevens Point, Wisconsin Rapids, Marshfield, Weston,
Merrill, Rib Mountain, Mosinee, Tomahawk and Abbotsford.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

&&

A Severe Thunderstorm Watch remains in effect until midnight CDT for
central, north central and northeastern Wisconsin.

LAT...LON 4503 9031 4504 9020 4512 9020 4512 9004
      4555 9004 4556 8946 4547 8942 4547 8920
      4444 8923 4436 9032
TIME...MOT...LOC 0000Z 273DEG 32KT 4528 8948

Eckberg

Local storm report, Jun 17, 7:34 PM CDT, 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
734 PM CDT SUN JUN 17 2018

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

0726 PM     TSTM WND GST     SPENCER                 44.76N 90.28W
06/17/2018  E60 MPH          MARATHON           WI   TRAINED SPOTTER

            SMALL BRANCHES DOWN

&&

BERSCH

Local storm report, Jun 17, 8:09 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
809 PM CDT SUN JUN 17 2018

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

0805 PM     TSTM WND GST     DANCY                   44.68N 89.69W
06/17/2018  E65 MPH          PORTAGE            WI   TRAINED SPOTTER

&&

BERSCH

Local storm report, Jun 17, 8:10 PM CDT, 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
810 PM CDT SUN JUN 17 2018

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

0755 PM     TSTM WND GST     MOSINEE                 44.78N 89.69W
06/17/2018  M55 MPH          MARATHON           WI   AWOS

&&

BERSCH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 7:06 PM CDT	Special Weather Statement	GRB	Lincoln, Marathon, Portage, Wood	39 min
Jun 17, 7:17 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Portage, Wood	88 min
Jun 17, 7:20 PM CDT	Severe Thunderstorm Warning	GRB	Langlade	40 min
Jun 17, 8:11 PM CDT	Special Marine Warning	GRB		2 hr
Jun 17, 8:16 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Menominee, Oconto, Shawano	59 min
Jun 17, 8:51 PM CDT	Special Weather Statement	GRB	Door	54 min
Jun 17, 9:12 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Menominee, Oconto, Shawano	51 min
Jun 17, 9:19 PM CDT	Special Marine Warning	GRB		116 min
Jun 17, 9:24 PM CDT	Tornado Warning	GRB	Oconto, Shawano	24 min
Jun 17, 10:01 PM CDT	Special Weather Statement	GRB	Brown, Kewaunee	59 min
Jun 17, 10:25 PM CDT	Special Weather Statement	GRB	Waupaca	65 min
Jun 17, 10:56 PM CDT	Special Weather Statement	GRB	Outagamie, Portage, Waupaca, Waushara, Winnebago, Wood	49 min
Jun 17, 11:48 PM CDT	Special Weather Statement	GRB	Winnebago	27 min
Jun 18, 12:19 AM CDT	Special Weather Statement	GRB	Calumet, Manitowoc	41 min
Jun 18, 12:51 AM CDT	Special Weather Statement	GRB	Brown, Calumet, Manitowoc, Outagamie, Portage, Waupaca and 3 more	84 min
Jun 18, 2:43 AM CDT	Areal Flood Advisory	GRB	Outagamie, Portage, Waupaca, Waushara, Winnebago, Wood	6 hr
Jun 18, 10:21 AM CDT	River Flood Warning	GRB	Oneida	35 hr
Jun 18, 11:30 AM CDT	River Flood Warning	GRB	Waupaca	5 days
Jun 18, 11:32 AM CDT	River Flood Warning	GRB	Waupaca	3 days
Jun 18, 3:52 PM CDT	River Flood Advisory	GRB	Oneida	36 hr

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2018 Every severe thunderstorm 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.