Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 250, NWS Twin Cities, MN

October 17, 2016Washington County, Minnesota; Pierce County, Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Oct 17, 2016, 5:42 PM CDT for Washington County, Minnesota; Pierce County, Saint Croix County, Wisconsin. It was in force for 33 min. 2 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: Oct 17, 2016, 5:42 PM CDT (22:42 UTC)
Expired: Oct 17, 2016, 6:15 PM CDT
In force: 33 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Washington County, MN, Pierce County, WI, Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 66 km from the middle of the area, began a volume at 22:46 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
Oct 17, 5:42 PM CDT	HAIL 0.75	Cottage Grove, MN	.
Oct 17, 6:00 PM CDT	HAIL 0.88	River Falls, WI	NICKEL AND DIME SIZED HAIL.

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

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.7 hours before the alert went out and 69 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: 67 J/kg
Mixed-layer CIN: -360 J/kg
Mixed-layer LCL: 651 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: -53 m²/s²
0-3 km storm-relative helicity: 74 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

958 
WUUS53 KMPX 172242
SVRMPX
MNC163-WIC093-109-172315-
/O.NEW.KMPX.SV.W.0250.161017T2242Z-161017T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
542 PM CDT MON OCT 17 2016

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA...
  SOUTHWESTERN ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN...
  NORTHWESTERN PIERCE COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 615 PM CDT

* AT 542 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER COTTAGE
  GROVE...OR 12 MILES SOUTHEAST OF ST. PAUL...MOVING EAST AT 55 MPH.

  HAZARD...60 MPH WIND GUSTS AND HALF DOLLAR SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING...AND TREES. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  PRESCOTT AROUND 550 PM CDT. 
  RIVER FALLS AROUND 600 PM CDT. 
  BALDWIN AROUND 615 PM CDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
KINNICKINNIC STATE PARK...AFTON STATE PARK...GREY CLOUD TOWNSHIP AND
BELDENVILLE.

THIS INCLUDES INTERSTATE 94 IN WISCONSIN BETWEEN MILE MARKERS 9 AND
16.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4475 9247 4476 9286 4477 9288 4477 9300
      4483 9301 4501 9244
TIME...MOT...LOC 2242Z 256DEG 48KT 4480 9294 

HAIL...1.25IN
WIND...60MPH
 
$$

JPC

1 follow-up statement

692 
WWUS53 KMPX 172256
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
556 PM CDT MON OCT 17 2016

MNC163-172305-
/O.CAN.KMPX.SV.W.0250.000000T0000Z-161017T2315Z/
WASHINGTON MN-
556 PM CDT MON OCT 17 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN WASHINGTON COUNTY IS
CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA. THEREFORE...THE SEVERE THUNDERSTORM WARNING FOR
SOUTHERN WASHINGTON COUNTY HAS BEEN CANCELLED.

LAT...LON 4476 9272 4483 9274 4492 9272 4501 9244
      4475 9247
TIME...MOT...LOC 2255Z 255DEG 49KT 4484 9267 

$$

WIC093-109-172315-
/O.CON.KMPX.SV.W.0250.000000T0000Z-161017T2315Z/
ST. CROIX WI-PIERCE WI-
556 PM CDT MON OCT 17 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR SOUTHWESTERN ST. CROIX AND NORTHWESTERN PIERCE COUNTIES...

AT 555 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR RIVER FALLS...
MOVING EAST AT 55 MPH.

HAZARD...60 MPH WIND GUSTS AND HALF DOLLAR SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING...AND TREES. 

THIS SEVERE STORM WILL BE NEAR...
  BALDWIN AROUND 615 PM CDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
BELDENVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE IN
THE TWIN CITIES.

CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
MOVE INDOORS IMMEDIATELY. LIGHTNING IS ONE OF NATURE'S LEADING
KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO
BE STRUCK BY LIGHTNING.

&&

LAT...LON 4476 9272 4483 9274 4492 9272 4501 9244
      4475 9247
TIME...MOT...LOC 2255Z 255DEG 49KT 4484 9267 

HAIL...1.25IN
WIND...60MPH
 
$$

JPC

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 17, 5:31 AM CDT	Dense Fog Advisory	MPX	Blue Earth, Brown, Chippewa, Faribault, Freeborn, Kandiyohi and 15 more	5 hr
Oct 17, 5:00 PM CDT	Special Weather Statement	MPX	Hennepin	30 min
Oct 17, 5:22 PM CDT	Special Weather Statement	MPX	Washington	38 min
Oct 17, 2:30 AM CDT	Special Weather Statement	MPX	Rusk	15 min
Oct 17, 4:42 PM CDT	Special Weather Statement	MPX	Rusk	63 min
Oct 17, 5:59 PM CDT	Special Weather Statement	MPX	Barron	31 min
Oct 17, 6:08 PM CDT	Severe Thunderstorm Warning	MPX	Dunn, Pepin, Pierce, Saint Croix	52 min
Oct 17, 6:38 PM CDT	Special Weather Statement	MPX	Rusk	37 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2016 Severe Thunderstorm Warnings in Minnesota, 2016 Every severe thunderstorm warning in 2016

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.