Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 2, NWS Green Bay, WI

March 6, 2017Portage County, Waupaca County, Waushara County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Mar 6, 2017, 10:11 PM CST for Portage County, Waupaca County, Waushara County, Wisconsin. It was in force for 34 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: Mar 6, 2017, 10:11 PM CST (04:11 UTC)
Expired: Mar 6, 2017, 10:45 PM CST
In force: 34 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Portage County, WI, Waupaca County, WI, Waushara County, WI

The radar

The Green Bay radar (KGRB), 105 km from the middle of the area, began a volume at 04:11 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
Mar 6, 10:12 PM CST	TSTM WND GST 74	S Plover, WI

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

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 4.2 hours before the alert went out and 106 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: 522 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 441 m²/s²
0-3 km storm-relative helicity: 425 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

245 
WUUS53 KGRB 070411
SVRGRB
WIC097-135-137-070445-
/O.NEW.KGRB.SV.W.0002.170307T0411Z-170307T0445Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service GREEN BAY WI
1011 PM CST MON MAR 6 2017

The National Weather Service in Green Bay has issued a

* Severe Thunderstorm Warning for...
  Portage County in central Wisconsin...
  Waushara County in central Wisconsin...
  Waupaca County in northeastern Wisconsin...

* Until 1045 PM CST.

* At 1010 PM CST, severe thunderstorms were located along a line
  extending from near Stevens Point to 8 miles south of Whiting to 9
  miles northeast of Friendship, moving east at 65 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

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

* Severe thunderstorms will be near,
  Randolph and Amherst around 1020 PM CST. 
  Hartman Creek State Park around 1025 PM CST. 
  Wautoma and Chain O' Lakes-King around 1030 PM CST. 
  Redgranite around 1035 PM CST. 

Other locations impacted by these severe thunderstorms include
Schmidt Corner, Coddington, Borth, Ellis, Nelsonville, King, Iola,
Symco, Metz and Tustin.

This warning extends the severe thunderstorm warning already in 
effect for southwestern Portage County. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

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

&&

LAT...LON 4399 8960 4424 8960 4425 8963 4469 8959
      4468 8886 4399 8888
TIME...MOT...LOC 0410Z 257DEG 55KT 4459 8954 4437 8952 4404 8965 

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

Eckberg

1 follow-up statement

181 
WWUS53 KGRB 070426
SVSGRB

Severe Weather Statement
National Weather Service GREEN BAY WI
1026 PM CST MON MAR 6 2017

WIC097-135-137-070445-
/O.CON.KGRB.SV.W.0002.000000T0000Z-170307T0445Z/
Portage WI-Waushara WI-Waupaca WI-
1026 PM CST MON MAR 6 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM CST
FOR EASTERN PORTAGE...WAUSHARA AND WAUPACA COUNTIES...

At 1024 PM CST, severe thunderstorms were located along a line
extending from 6 miles southeast of Bevent to near Amherst to 11
miles northwest of Westfield, moving east at 60 mph.

HAZARD...70 mph wind gusts. 

SOURCE...A trained weather spotter in Plover reported a wind gust 
         to 74 mph.  

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings. 

These severe storms will be near...
  Randolph, Chain O' Lakes-King and Hartman Creek State Park around 
  1030 PM CST. 
  Waupaca around 1035 PM CST. 
  Wautoma around 1040 PM CST. 
  Redgranite around 1045 PM CST. 

Other locations impacted by these severe thunderstorms include
Schmidt Corner, Borth, Ellis, Nelsonville, King, Iola, Symco, Metz,
Tustin and Custer.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

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

&&

LAT...LON 4399 8960 4424 8960 4437 8944 4469 8945
      4468 8886 4399 8888
TIME...MOT...LOC 0424Z 262DEG 54KT 4468 8931 4440 8927 4403 8958 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...70MPH
 
$$

Eckberg

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 6, 9:31 PM CST	Special Weather Statement	GRB	Wood	44 min
Mar 6, 9:47 PM CST	Severe Thunderstorm Warning	GRB	Portage, Wood	28 min
Mar 6, 10:39 PM CST	Special Weather Statement	GRB	Langlade, Menominee, Shawano	66 min
Mar 6, 10:47 PM CST	Severe Thunderstorm Warning	GRB	Outagamie, Portage, Shawano, Waupaca, Waushara	43 min
Mar 6, 11:48 PM CST	Severe Thunderstorm Warning	GRB	Brown, Oconto, Outagamie, Shawano	27 min
Mar 6, 11:58 PM CST	Special Marine Warning	GRB		2 hr
Mar 7, 2:11 AM CST	High Wind Warning	GRB	Manitowoc	43 min
Mar 7, 2:17 AM CST	Special Marine Warning	GRB		58 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2017 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.