Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 21, NWS Green Bay, WI

July 19, 20196 counties in Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jul 19, 2019, 8:23 PM CDT for 6 counties in Wisconsin. It was in force for 52 min. 8 reports 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: Jul 19, 2019, 8:23 PM CDT (01:23 UTC)
Expired: Jul 19, 2019, 9:15 PM CDT
In force: 52 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 70.0 mph

Counties Marathon County, WI, Menominee County, WI, Portage County, WI, Shawano County, WI, Waupaca County, WI, Wood County, WI

The radar

The Green Bay radar (KGRB), 116 km from the middle of the area, began a volume at 01:26 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.

What was reported inside it

Time	Report	Where	Remark
Jul 19, 8:25 PM CDT	TSTM WND GST 50	Knowlton, WI
Jul 19, 8:25 PM CDT	TORNADO	5 S Mosinee, WI	TORNADO ON THE GROUND FOR AT LEAST 9 MILES SOUTH OF MOSINEE. DAMAGE TO HUNDREDS OF TREES. BARN DEMOLISHED, DAMAGE TO THE ROOFS OF SEVERAL BUILDINGS. TORNADO CROSSED I-39/51. RATING-EF1.
Jul 19, 8:45 PM CDT	TSTM WND DMG	Bowler, WI	VERY WIDESPREAD TREE AND POWERLINE DAMAGE THROUGHOUT THE COUNTY. ALSO DISPATCH REPORTED A TREE ON A BUILDING AND A CAR WITHIN THE COUNTY.
Jul 19, 8:47 PM CDT	TSTM WND DMG	Keshena, WI	WIDSPREAD POWERLINE AND TREE DAMAGE. NO FLOODING OBSERVED.
Jul 19, 8:50 PM CDT	TSTM WND DMG	Rosholt, WI	WIDESPREAD TREE AND POWERLINE DAMAGE. WORST DAMAGE ACROSS THE NORTHEASTERN PORTIONS OF THE COUNTY. MINOR FLOODING WAS OBSERVED UNDER OVERPASSES AND FLOODING WAS OBSERVED ALONG I39 AS THE STORM OCCURRED.
Jul 19, 9:07 PM CDT	TSTM WND DMG	5 Sw Mosinee, WI	HIGHWAY O FOUR MILES SOUTH OF MOON IMPASSABLE DUE TO FALLEN TREES
Jul 19, 9:12 PM CDT	TSTM WND DMG	2 Ne Knowlton, WI	TREES DOWN ON HIGHWAY X NORTH OF LOCKER ROAD. ROAD IMPASSABLE.
Jul 19, 9:15 PM CDT	TSTM WND GST 60	Nekoosa, WI	SEVERAL SMALL TREE BRANCHES DOWN.

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

The watch it was issued in

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

Issued	Product	Office	Lasted
Jul 19, 5:55 PM CDT	Severe Thunderstorm Watch PDS	SPC	6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 1.4 hours before the alert went out and 117 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: 2503 J/kg
Mixed-layer CIN: -76 J/kg
Mixed-layer LCL: 1199 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: 218 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 3.7

Open this sounding in Storm Lab

The text

As transmitted.

482 
WUUS53 KGRB 200123
SVRGRB
WIC073-078-097-115-135-141-200215-
/O.NEW.KGRB.SV.W.0021.190720T0123Z-190720T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Green Bay WI
823 PM CDT Fri Jul 19 2019

The National Weather Service in Green Bay has issued a

* Severe Thunderstorm Warning for...
  Wood County in central Wisconsin...
  Portage County in central Wisconsin...
  Eastern Marathon County in central Wisconsin...
  Southern Menominee County in northeastern Wisconsin...
  Northwestern Waupaca County in northeastern Wisconsin...
  Western Shawano County in northeastern Wisconsin...

* Until 915 PM CDT.

* At 823 PM CDT, severe thunderstorms were located along a line
  extending from 8 miles northeast of Wausau to near Rib Mountain to
  9 miles southwest of Mosinee to 8 miles west of Pittsville, moving
  east at 45 mph.

  HAZARD...70 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* Severe thunderstorms will be near...
  Weston and Mosinee around 830 PM CDT.
  Stevens Point and Whiting around 845 PM CDT.
  Bevent around 850 PM CDT.
  Wisconsin Rapids around 855 PM CDT.
  Wittenberg and Lake Wazeecha around 900 PM CDT.
  Amherst and Neopit around 905 PM CDT.

Other locations impacted by these severe thunderstorms include
Schmidt Corner, North Wood County Park, Mattoon, Moon, Coddington,
Blenker, Birnamwood, Tigerton, Kellner and Ellis.

People at Lake Wazeecha should seek safe shelter immediately!

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 4449 9032 4467 8987 4488 8980 4510 8951
      4505 8922 4503 8922 4503 8912 4493 8856
      4465 8893 4444 8899 4424 8954 4425 8996
      4433 9032
TIME...MOT...LOC 0123Z 289DEG 37KT 4504 8950 4486 8973 4466 8979 4447
9031

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...70MPH
 
$$

RDM

1 follow-up statement

483 
WWUS53 KGRB 200143
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
843 PM CDT Fri Jul 19 2019

WIC073-078-097-115-135-141-200215-
/O.CON.KGRB.SV.W.0021.000000T0000Z-190720T0215Z/
Wood WI-Portage WI-Marathon WI-Menominee WI-Waupaca WI-Shawano WI-
843 PM CDT Fri Jul 19 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR SOUTHERN WOOD...PORTAGE...SOUTHEASTERN MARATHON...SOUTHERN
MENOMINEE...NORTHWESTERN WAUPACA AND WESTERN SHAWANO COUNTIES...

At 842 PM CDT, severe thunderstorms were located along a line
extending from 12 miles north of Wittenberg to near Bevent to 6 miles
north of Stevens Point to near Pittsville, moving east at 45 mph.

HAZARD...70 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

These severe storms will be near...
  Stevens Point, Whiting and Bevent around 850 PM CDT.
  Wittenberg and Lake Wazeecha around 900 PM CDT.
  Amherst around 905 PM CDT.
  Neopit around 910 PM CDT.

Other locations impacted by these severe thunderstorms include
Schmidt Corner, Mattoon, Coddington, Birnamwood, Tigerton, Kellner,
Ellis, Whitcomb, Nelsonville and Iola.

People at Lake Wazeecha should seek safe shelter immediately!

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 4447 9003 4461 8962 4485 8952 4502 8930
      4505 8922 4503 8922 4503 8912 4493 8856
      4465 8893 4444 8899 4424 8954 4425 8996
      4436 9032 4441 9032
TIME...MOT...LOC 0142Z 289DEG 37KT 4498 8925 4480 8948 4460 8954 4441
9006

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...70MPH
 
$$

RDM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 7:17 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Lincoln, Marathon, Portage, Wood	73 min
Jul 19, 7:25 PM CDT	Severe Thunderstorm Warning	GRB	Forest, Langlade, Lincoln, Oneida	65 min
Jul 19, 7:50 PM CDT	Flash Flood Warning	GRB	Oneida	115 min
Jul 19, 8:12 PM CDT	Severe Thunderstorm Warning	GRB	Forest, Langlade, Lincoln, Marathon, Marinette, Menominee and 3 more	63 min
Jul 19, 8:20 PM CDT	Special Marine Warning	GRB		115 min
Jul 19, 8:26 PM CDT	Tornado Warning	GRB	Marathon, Portage, Shawano, Waupaca	34 min
Jul 19, 8:57 PM CDT	Tornado Warning Tornado observed	GRB	Outagamie, Shawano, Waupaca	33 min
Jul 19, 9:08 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Door, Kewaunee, Marinette, Oconto, Shawano	67 min
Jul 19, 9:10 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Calumet, Kewaunee, Outagamie, Portage, Shawano and 4 more	50 min
Jul 19, 9:31 PM CDT	Areal Flood Advisory	GRB	Portage, Waupaca, Wood	111 min
Jul 19, 9:40 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Calumet, Kewaunee, Manitowoc, Outagamie, Waushara and 1 more	50 min
Jul 19, 9:44 PM CDT	Areal Flood Advisory	GRB	Brown, Outagamie	101 min
Jul 19, 10:09 PM CDT	Special Marine Warning	GRB		111 min
Jul 19, 10:17 PM CDT	Severe Thunderstorm Warning	GRB	Door	43 min
Jul 19, 10:25 PM CDT	Areal Flood Advisory	GRB	Calumet, Manitowoc, Waushara, Winnebago	2 hr
Jul 19, 10:32 PM CDT	Severe Thunderstorm Warning	GRB	Calumet, Manitowoc, Winnebago	43 min
Jul 19, 10:56 PM CDT	Special Weather Statement	GRB	Winnebago	34 min
Jul 20, 8:00 AM CDT	Flash Flood Watch	GRB	Brown, Calumet, Kewaunee, Manitowoc, Marathon, Outagamie and 6 more	7 hr
Jul 20, 8:57 AM CDT	Special Weather Statement	GRB	Kewaunee	33 min
Jul 20, 9:51 AM CDT	Severe Thunderstorm Warning	GRB	Marathon, Portage, Wood	54 min
Jul 20, 9:53 AM CDT	Flash Flood Warning	GRB	Marathon, Portage, Shawano, Waupaca, Waushara, Wood	5 hr
Jul 20, 10:34 AM CDT	Severe Thunderstorm Warning	GRB	Marathon, Menominee, Outagamie, Portage, Shawano, Waupaca and 3 more	56 min
Jul 20, 10:44 AM CDT	Special Marine Warning	GRB		2 hr
Jul 20, 10:46 AM CDT	Tornado Warning	GRB	Portage, Waupaca	29 min
Jul 20, 10:48 AM CDT	Flash Flood Warning	GRB	Brown, Calumet, Door, Kewaunee, Manitowoc, Menominee and 6 more	4 hr
Jul 20, 11:03 AM CDT	Tornado Warning	GRB	Outagamie, Waupaca	27 min
Jul 20, 11:21 AM CDT	Severe Thunderstorm Warning	GRB	Brown, Calumet, Kewaunee, Manitowoc, Outagamie, Shawano and 3 more	54 min
Jul 20, 11:22 AM CDT	Tornado Warning Tornado observed	GRB	Brown, Outagamie	38 min
Jul 20, 11:35 AM CDT	Severe Thunderstorm Warning	GRB	Menominee, Oconto, Shawano	40 min
Jul 20, 11:47 AM CDT	Tornado Warning	GRB	Brown, Kewaunee, Manitowoc	43 min
Jul 20, 11:58 AM CDT	Severe Thunderstorm Warning	GRB	Door	62 min
Jul 20, 12:14 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Kewaunee, Manitowoc	31 min
Jul 20, 12:42 PM CDT	Special Marine Warning	GRB		56 min
Jul 20, 12:55 PM CDT	Severe Thunderstorm Warning	GRB	Door	24 min
Jul 20, 1:25 PM CDT	Special Weather Statement	GRB	Portage, Shawano, Waupaca, Waushara	65 min
Jul 20, 2:04 PM CDT	Special Weather Statement	GRB	Brown, Calumet, Menominee, Oconto, Outagamie, Shawano and 3 more	56 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2019 Every severe thunderstorm warning in 2019

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; radar from the NEXRAD Level II archive.