Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 18, NWS Twin Cities, MN

May 8, 2014Washington County, Minnesota; Pierce County, Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at May 8, 2014, 3:58 PM CDT for Washington County, Minnesota; Pierce County, Saint Croix County, Wisconsin. It was in force for 47 min. 5 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: May 8, 2014, 3:58 PM CDT (20:58 UTC)
Expired: May 8, 2014, 4:45 PM CDT
In force: 47 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

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

The radar

The Minneapolis radar (KMPX), 70 km from the middle of the area, began a volume at 20:59 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
May 8, 4:03 PM CDT	TSTM WND DMG	5 N Bay City, WI	A FEW TREES DOWN
May 8, 4:03 PM CDT	TSTM WND DMG	5 N Bay City, WI
May 8, 4:03 PM CDT	HAIL 1.5	5 N Bay City, WI
May 8, 4:06 PM CDT	TSTM WND DMG	Bay City, WI	LARGE TREE DOWN ACROSS ST HWY 35 EAST OF TOWN WITH ANOTHER TREE DOWN PARTIALLY BLOCKING THE HWY.
May 8, 4:25 PM CDT	TSTM WND DMG	1 W Elmwood, WI	A FEW TREES 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
May 8, 1:46 PM CDT	Tornado Watch	SPC	7 hr
May 8, 2:05 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.0 hours before the alert went out and 72 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: 955 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: -27 m²/s²
0-3 km storm-relative helicity: -85 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

729 
WUUS53 KMPX 082058
SVRMPX
MNC163-WIC093-109-082145-
/O.NEW.KMPX.SV.W.0018.140508T2058Z-140508T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
358 PM CDT THU MAY 8 2014

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

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

* UNTIL 445 PM CDT

* AT 354 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM FORT SNELLING TO 9 MILES SOUTHWEST OF KINNICKINNIC
  STATE PARK TO RED WING...AND MOVING NORTHEAST AT 45 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.

  SOURCE...RADAR INDICATED.

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

* LOCATIONS IMPACTED INCLUDE...
  ELLSWORTH...RIVER FALLS...HUDSON...NEW RICHMOND...KINNICKINNIC
  STATE PARK...AFTON STATE PARK...STILLWATER...WILLOW RIVER STATE
  PARK...DIAMOND BLUFF...HAGER CITY...RED WING AIRPORT...BAY CITY...
  WOODBURY...LANDFALL...ESDAILE...AFTON...OAKDALE...MAIDEN ROCK...
  LAKE ELMO AND ST MARYS POINT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4455 9234 4457 9254 4472 9274 4478 9289
      4476 9296 4478 9302 4482 9300 4489 9302
      4490 9298 4509 9298 4518 9282 4522 9276
      4520 9226 4511 9213 4467 9214
TIME...MOT...LOC 2058Z 231DEG 38KT 4492 9307 4475 9280
          4456 9251

HAIL...1.00IN
WIND...60MPH

$$

JRB

4 follow-up statements

607 
WWUS53 KMPX 082109
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
409 PM CDT THU MAY 8 2014

MNC163-WIC093-109-082145-
/O.CON.KMPX.SV.W.0018.000000T0000Z-140508T2145Z/
WASHINGTON MN-ST. CROIX WI-PIERCE WI-
409 PM CDT THU MAY 8 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR PIERCE...ST.
CROIX AND WASHINGTON COUNTIES UNTIL 445 PM CDT...

AT 408 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM MAPLEWOOD TO KINNICKINNIC STATE PARK TO 9 MILES NORTH
OF FRONTENAC STATE PARK...AND MOVING NORTHEAST AT 45 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED.

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

LOCATIONS IMPACTED INCLUDE...
ELLSWORTH...RIVER FALLS...HUDSON...NEW RICHMOND...STILLWATER...WILLOW
RIVER STATE PARK...ST MARYS POINT...PINE SPRINGS...BIRCHWOOD...LAKE
ST CROIX BEACH...MAHTOMEDI...WILLERNIE...LAKE ELMO AIRPORT...
BELDENVILLE...LAKELAND...LAKELAND SHORES...GRANT...NORTH HUDSON...
BAYPORT AND OAK PARK HEIGHTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4455 9234 4457 9254 4472 9274 4478 9289
      4476 9296 4478 9302 4482 9300 4489 9302
      4490 9298 4509 9298 4518 9282 4522 9276
      4520 9226 4511 9213 4467 9214
TIME...MOT...LOC 2109Z 231DEG 38KT 4499 9294 4482 9267
          4463 9238

HAIL...1.00IN
WIND...60MPH

$$

JRB

251 
WWUS53 KMPX 082119
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
419 PM CDT THU MAY 8 2014

MNC163-WIC093-109-082145-
/O.CON.KMPX.SV.W.0018.000000T0000Z-140508T2145Z/
WASHINGTON MN-ST. CROIX WI-PIERCE WI-
419 PM CDT THU MAY 8 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
PIERCE...ST. CROIX AND CENTRAL WASHINGTON COUNTIES UNTIL 445 PM
CDT...

AT 417 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM STILLWATER TO RIVER FALLS TO 10 MILES EAST OF
ELLSWORTH...AND MOVING NORTHEAST AT 45 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED.

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

LOCATIONS IMPACTED INCLUDE...
NEW RICHMOND...WILLOW RIVER STATE PARK...MARTEL...BURKHARDT...
ROBERTS...BOARDMAN...ELMWOOD...MARINE ON ST CROIX...HAMMOND...
SOMERSET...SPRING VALLEY...HOULTON...LAKE GEORGE...BALDWIN...
WOODVILLE...NEW RICHMOND AIRPORT...HERSEY...HUNTINGTON...WILSON AND
STAR PRAIRIE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4467 9214 4457 9230 4480 9267 4495 9297
      4509 9298 4522 9276 4520 9226 4511 9213
TIME...MOT...LOC 2119Z 231DEG 38KT 4506 9282 4489 9255
          4469 9226

HAIL...1.00IN
WIND...60MPH

$$

JRB

262 
WWUS53 KMPX 082132
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
432 PM CDT THU MAY 8 2014

MNC163-WIC093-109-082145-
/O.CON.KMPX.SV.W.0018.000000T0000Z-140508T2145Z/
WASHINGTON MN-ST. CROIX WI-PIERCE WI-
432 PM CDT THU MAY 8 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
PIERCE...ST. CROIX AND EAST CENTRAL WASHINGTON COUNTIES UNTIL 445 PM
CDT...

AT 428 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 7 MILES NORTHEAST OF STILLWATER TO 11 MILES NORTHEAST
OF RIVER FALLS TO 12 MILES NORTHWEST OF DURAND...AND MOVING NORTHEAST
AT 45 MPH.

HAZARD...60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.

LOCATIONS IMPACTED INCLUDE...
NEW RICHMOND...WOODVILLE...NEW RICHMOND AIRPORT...HERSEY...
HUNTINGTON...WILSON...STAR PRAIRIE...EMERALD...CYLON...DEER PARK...
GLENWOOD CITY AND FOREST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4467 9214 4500 9283 4509 9286 4522 9276
      4520 9226 4511 9213
TIME...MOT...LOC 2133Z 231DEG 38KT 4515 9265 4498 9238
          4478 9210

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

$$

JRB

078 
WWUS53 KMPX 082139
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
439 PM CDT THU MAY 8 2014

MNC163-WIC093-109-082149-
/O.EXP.KMPX.SV.W.0018.000000T0000Z-140508T2145Z/
WASHINGTON MN-ST. CROIX WI-PIERCE WI-
439 PM CDT THU MAY 8 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PIERCE...ST.
CROIX AND EAST CENTRAL WASHINGTON COUNTIES WILL EXPIRE AT 445 PM
CDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR 
PROPERTY. IF YOU HAD WIND DAMAGE PLEASE REPORT IT TO THE NATIONAL 
WEATHER SERVICE.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 9PM CDT.

LAT...LON 4467 9214 4500 9283 4509 9286 4522 9276
      4520 9226 4511 9213
TIME...MOT...LOC 2139Z 231DEG 38KT 4519 9258 4502 9231
          4482 9203

$$

JRB

The office that day

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

Issued	Product	Office	Counties	Lasted
May 7, 7:20 PM CDT	Special Weather Statement	MPX	Benton, Sherburne, Stearns	55 min
May 7, 8:47 PM CDT	Special Weather Statement	MPX	Blue Earth, Le Sueur, Nicollet	58 min
May 7, 8:58 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Le Sueur, Nicollet	62 min
May 7, 9:20 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Le Sueur, Waseca	55 min
May 7, 9:22 PM CDT	Special Weather Statement	MPX	Sherburne	68 min
May 7, 10:14 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Rice, Waseca	61 min
May 7, 10:57 PM CDT	Severe Thunderstorm Warning	MPX	Rice	48 min
May 7, 11:37 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Rice, Scott	38 min
May 7, 11:41 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Hennepin, Scott	49 min
May 8, 12:32 AM CDT	Special Weather Statement	MPX	Hennepin, Ramsey, Washington	43 min
May 8, 2:02 AM CDT	Special Weather Statement	MPX	Isanti	43 min
May 8, 2:10 AM CDT	Special Weather Statement	MPX	McLeod	35 min
May 8, 2:23 AM CDT	Special Weather Statement	MPX	Kandiyohi	52 min
May 8, 3:05 AM CDT	Special Weather Statement	MPX	Benton	40 min
May 8, 6:09 AM CDT	Special Weather Statement	MPX	Watonwan	36 min
May 8, 7:08 AM CDT	Special Weather Statement	MPX	Dakota	37 min
May 8, 8:13 AM CDT	Special Weather Statement	MPX	Watonwan	32 min
May 8, 8:37 AM CDT	Special Weather Statement	MPX	Nicollet	23 min
May 8, 9:44 AM CDT	Special Weather Statement	MPX	Martin	46 min
May 8, 10:02 AM CDT	Special Weather Statement	MPX	Redwood	43 min
May 8, 10:20 AM CDT	Special Weather Statement	MPX	Faribault	25 min
May 8, 10:48 AM CDT	Special Weather Statement	MPX	Waseca	42 min
May 8, 11:18 AM CDT	Special Weather Statement	MPX	Lac qui Parle	42 min
May 8, 11:27 AM CDT	Special Weather Statement	MPX	Rice	48 min
May 8, 11:48 AM CDT	Special Weather Statement	MPX	Anoka, Hennepin	42 min
May 8, 12:01 PM CDT	Special Weather Statement	MPX	Stevens	29 min
May 8, 12:22 PM CDT	Special Weather Statement	MPX	Wright	23 min
May 8, 1:08 PM CDT	Special Weather Statement	MPX	Brown	37 min
May 8, 1:11 PM CDT	Severe Thunderstorm Warning	MPX	Brown, Redwood	34 min
May 8, 1:44 PM CDT	Special Weather Statement	MPX	Stevens	31 min
May 8, 2:12 PM CDT	Special Weather Statement	MPX	Faribault	33 min
May 8, 2:21 PM CDT	Special Weather Statement	MPX	Sherburne	24 min
May 8, 2:55 PM CDT	Special Weather Statement	MPX	Carver, Freeborn, Le Sueur, Rice, Scott, Steele and 1 more	50 min
May 8, 3:07 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue, Rice, Steele	23 min
May 8, 3:17 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Rice	28 min
May 8, 3:23 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Scott	52 min
May 8, 3:26 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue, Steele	49 min
May 8, 4:10 PM CDT	Special Weather Statement	MPX	Watonwan	35 min
May 8, 4:29 PM CDT	Tornado Warning	MPX	Watonwan	31 min
May 8, 4:55 PM CDT	Tornado Warning Tornado observed	MPX	Blue Earth, Brown, Watonwan	35 min
May 8, 5:15 PM CDT	Tornado Warning Tornado observed	MPX	Blue Earth, Nicollet	45 min
May 8, 5:26 PM CDT	Severe Thunderstorm Warning	MPX	Nicollet, Sibley	49 min
May 8, 5:34 PM CDT	Special Weather Statement	MPX	McLeod	41 min
May 8, 6:13 PM CDT	Special Weather Statement	MPX	Carver	32 min
May 8, 6:14 PM CDT	Special Weather Statement	MPX	Carver	31 min
May 8, 5:01 PM CDT	Special Weather Statement	MPX	Chippewa, Dunn, Rusk	59 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2014 Severe Thunderstorm Warnings in Minnesota, 2014 Every severe thunderstorm warning in 2014

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.