Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 9, NWS Twin Cities, MN

May 19, 2013Pierce County, Saint Croix County, Wisconsin; Washington County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 19, 2013, 4:54 PM CDT for Pierce County, Saint Croix County, Wisconsin; Washington County, Minnesota. It was in force for 36 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: May 19, 2013, 4:54 PM CDT (21:54 UTC)
Expired: May 19, 2013, 5:30 PM CDT
In force: 36 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 0.75 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 21:55 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 19, 5:10 PM CDT	TSTM WND GST 58	10 W River Falls, MN
May 19, 5:20 PM CDT	TSTM WND DMG	4 N Ellsworth, WI	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 19, 1:10 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 9.9 hours before the alert went out and 364 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: 65 J/kg
Mixed-layer CIN: -210 J/kg
Mixed-layer LCL: 924 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 32 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.

748 
WUUS53 KMPX 192154
SVRMPX
MNC163-WIC093-109-192230-
/O.NEW.KMPX.SV.W.0009.130519T2154Z-130519T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
454 PM CDT SUN MAY 19 2013

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

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

* UNTIL 530 PM CDT

* AT 450 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
  LINE EXTENDING FROM 13 MILES SOUTHEAST OF EAGAN TO 11 MILES
  NORTHWEST OF RED WING TO 8 MILES SOUTHEAST OF RED WING...AND MOVING
  NORTH AT 50 MPH.

  HAZARD...60 MPH WIND GUSTS.

  SOURCE...RADAR INDICATED.

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

* LOCATIONS IMPACTED INCLUDE...
  ELLSWORTH...RIVER FALLS...HUDSON...STILLWATER...PRESCOTT...DIAMOND
  BLUFF...HAGER CITY...BAY CITY...COTTAGE GROVE...ESDAILE...
  WOODBURY...AFTON...BELDENVILLE...LAKELAND...LAKE ELMO...NORTH
  HUDSON...BAYPORT...BURKHARDT...OAK PARK HEIGHTS AND MARTEL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4457 9254 4460 9257 4462 9263 4466 9264
      4474 9279 4475 9285 4478 9289 4476 9295
      4478 9298 4516 9287 4513 9262 4487 9229
      4456 9245
TIME...MOT...LOC 2154Z 193DEG 42KT 4474 9296 4474 9276
          4453 9251

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

$$

1 follow-up statement

255 
WWUS53 KMPX 192213
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
513 PM CDT SUN MAY 19 2013

MNC163-WIC093-109-192230-
/O.CON.KMPX.SV.W.0009.000000T0000Z-130519T2230Z/
WASHINGTON MN-ST. CROIX WI-PIERCE WI-
513 PM CDT SUN MAY 19 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN
PIERCE...WESTERN ST. CROIX AND SOUTHERN WASHINGTON COUNTIES UNTIL 530
PM CDT...

AT 509 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
LINE EXTENDING FROM 8 MILES SOUTHEAST OF MAPLEWOOD TO HUDSON TO
ELLSWORTH...AND MOVING NORTH AT 45 MPH.

HAZARD...60 MPH WIND GUSTS.

SOURCE...PUBLIC. THIS STORM HAS KNOCKED OUT POWER IN HASTINGS AND A 
         SPOTTER 10 MILES WEST OF RIVER FALLS...WI REPORTED A WIND GUST
         OF 60 MPH AT 510 PM.

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

LOCATIONS IMPACTED INCLUDE...
HUDSON...STILLWATER...LAKELAND...BELDENVILLE...NORTH HUDSON...LAKE
ELMO...BAYPORT...OAK PARK HEIGHTS...MARTEL...BURKHARDT...ROBERTS...
SOMERSET...BOARDMAN...HOULTON AND HAMMOND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4457 9254 4460 9257 4462 9263 4463 9262
      4480 9285 4482 9297 4516 9287 4513 9262
      4487 9229 4456 9245
TIME...MOT...LOC 2212Z 190DEG 40KT 4494 9292 4494 9272
          4473 9247

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

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 19, 4:27 PM CDT	Severe Thunderstorm Warning	MPX	Pierce	33 min
May 19, 4:50 PM CDT	Severe Thunderstorm Warning	MPX	Dunn, Pepin, Pierce	40 min
May 19, 5:16 PM CDT	Severe Thunderstorm Warning	MPX	Rusk	44 min
May 19, 5:18 PM CDT	Severe Thunderstorm Warning	MPX	Dunn, Pepin, Pierce, Saint Croix	42 min
May 19, 5:23 PM CDT	Severe Thunderstorm Warning	MPX	Pierce, Polk, Saint Croix	37 min
May 19, 5:26 PM CDT	Tornado Warning	MPX	Pierce, Saint Croix	34 min
May 19, 5:51 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Dunn, Polk, Saint Croix	39 min
May 19, 6:00 PM CDT	Severe Thunderstorm Warning	MPX	Polk	15 min
May 19, 6:26 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Polk, Rusk	19 min
May 19, 6:36 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Eau Claire	39 min
May 18, 7:05 PM CDT	Special Weather Statement	MPX	Pope	25 min
May 18, 7:52 PM CDT	Areal Flood Advisory	MPX	Douglas	3 hr
May 18, 8:27 PM CDT	Severe Thunderstorm Warning	MPX	Douglas	48 min
May 19, 3:45 AM CDT	Special Weather Statement	MPX	Brown, Chippewa, Martin, Renville, Stevens, Swift and 1 more	60 min
May 19, 4:23 AM CDT	Special Weather Statement	MPX	Blue Earth, Faribault, Martin, Watonwan	67 min
May 19, 5:08 AM CDT	Special Weather Statement	MPX	McLeod, Nicollet, Sibley	52 min
May 19, 6:26 AM CDT	Special Weather Statement	MPX	Anoka, Hennepin, Ramsey	49 min
May 19, 12:20 PM CDT	River Flood Watch	MPX	Todd	27 hr
May 19, 12:20 PM CDT	River Flood Watch	MPX	Carver	27 hr
May 19, 3:33 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Ramsey, Washington	42 min
May 19, 3:43 PM CDT	Areal Flood Advisory	MPX	Anoka, Carver, Dakota, Hennepin, Ramsey, Scott and 1 more	3 hr
May 19, 4:15 PM CDT	Special Weather Statement	MPX	Dakota, Scott	30 min
May 19, 4:20 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Hennepin, Rice, Scott	40 min
May 19, 5:00 PM CDT	Special Weather Statement	MPX	Anoka, Hennepin, Ramsey	30 min
May 19, 5:55 PM CDT	Special Weather Statement	MPX	Chisago, Isanti	35 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2013 Severe Thunderstorm Warnings in Minnesota, 2013 Every severe thunderstorm warning in 2013

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.