Alert archive / Minnesota / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 157, NWS Twin Cities, MN

October 3, 2018Pierce County, Saint Croix County, Wisconsin; 4 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Oct 3, 2018, 5:37 PM CDT for Pierce County, Saint Croix County, Wisconsin; 4 counties in Minnesota. It was in force for 53 min. 7 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 3, 2018, 5:37 PM CDT (22:37 UTC)
Expired: Oct 3, 2018, 6:30 PM CDT
In force: 53 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Dakota County, MN, Hennepin County, MN, Ramsey County, MN, Washington County, MN, Pierce County, WI, Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 59 km from the middle of the area, began a volume at 22:37 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 3, 5:39 PM CDT	TSTM WND DMG	Mendota Heights, MN	A FEW POWER LINES DOWN.
Oct 3, 5:43 PM CDT	TSTM WND DMG	South St. Paul, MN	A FEW POWER POLES DOWN.
Oct 3, 5:48 PM CDT	TSTM WND DMG	Woodbury, MN	TREES DOWN NEAR WOODBURY. POSSIBLE TORNADO. KMSP TDWR RADAR SHOWED A SMALL BUT INTENSE VELOCITY COUPLET BEGIN NEAR WOODBURY, TRACKING EAST NORTHEAST TO HALF WAY BETWEEN WOODBURY AND LAKELAND.
Oct 3, 5:49 PM CDT	TSTM WND DMG	3 E Newport, MN	TREE DOWN NEAR MILITARY RD AND GLEN RD.
Oct 3, 6:00 PM CDT	TSTM WND DMG	1 Ne Lakeland, MN	A FEW TREES DOWN IN LAKELAND.
Oct 3, 6:05 PM CDT	TSTM WND DMG	4 Nw River Falls, WI	FEW POWER POLES DOWN.
Oct 3, 6:10 PM CDT	TSTM WND DMG	4 Nnw River Falls, WI	TREE DOWN ACROSS ROAD.

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
Oct 3, 3:31 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.6 hours before the alert went out and 62 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 545 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 425 m²/s²
0-3 km storm-relative helicity: 413 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

566 
WUUS53 KMPX 032237
SVRMPX
MNC037-053-123-163-WIC093-109-032330-
/O.NEW.KMPX.SV.W.0157.181003T2237Z-181003T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
537 PM CDT WED OCT 3 2018

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Southeastern Hennepin County in east central Minnesota...
  Northern Dakota County in east central Minnesota...
  Southern Washington County in east central Minnesota...
  Southern Ramsey County in east central Minnesota...
  Northwestern Pierce County in west central Wisconsin...
  Southwestern St. Croix County in west central Wisconsin...

* Until 630 PM CDT.

* At 537 PM CDT, severe thunderstorms were located along a line
  extending from North St. Paul to Lilydale to Bloomington, moving
  east at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Maplewood, Inver Grove Heights, Oakdale, White Bear Lake and West 
  St. Paul around 540 PM CDT.
  St. Paul, Rosemount, South St. Paul and Lake Elmo around 545 PM 
  CDT.
  Stillwater and Bayport around 550 PM CDT.
  Woodbury, Hudson, North Hudson and Afton around 555 PM CDT.
  Cottage Grove and St. Paul Park around 600 PM CDT.
  Hastings around 605 PM CDT.
  Prescott around 610 PM CDT.
  Roberts around 620 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A Tornado Watch remains in effect until 1100 PM CDT for west central
Wisconsin.

LAT...LON 4505 9238 4492 9251 4473 9276 4481 9343
      4492 9324 4507 9307
TIME...MOT...LOC 2237Z 266DEG 37KT 4503 9300 4491 9315 4481 9331 

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

BORGHOFF

4 follow-up statements

491 
WWUS53 KMPX 032246
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
546 PM CDT WED OCT 3 2018

MNC053-032256-
/O.CAN.KMPX.SV.W.0157.000000T0000Z-181003T2330Z/
Hennepin MN-
546 PM CDT WED OCT 3 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HENNEPIN COUNTY
IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 4492 9251 4473 9276 4479 9329 4484 9321
      4489 9318 4507 9298 4505 9238
TIME...MOT...LOC 2246Z 266DEG 37KT 4504 9289 4492 9304 4482 9320 

$$

MNC037-123-163-WIC093-109-032330-
/O.CON.KMPX.SV.W.0157.000000T0000Z-181003T2330Z/
Dakota MN-Washington MN-Ramsey MN-Pierce WI-St. Croix WI-
546 PM CDT WED OCT 3 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR NORTHERN DAKOTA...SOUTHERN WASHINGTON...SOUTHEASTERN RAMSEY...
NORTHWESTERN PIERCE AND SOUTHWESTERN ST. CROIX COUNTIES...

At 546 PM CDT, severe thunderstorms were located along a line
extending from near Lake Elmo to St Paul Airport to near Eagan,
moving east at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

These severe storms will be near...
  Oakdale, Lake Elmo and Mahtomedi around 550 PM CDT.
  Woodbury, Stillwater, Hudson, North Hudson and Bayport around 555 
  PM CDT.
  Cottage Grove and Afton around 600 PM CDT.
  Hastings around 610 PM CDT.
  Prescott around 615 PM CDT.
  Roberts around 620 PM CDT.
  River Falls and Baldwin around 630 PM CDT.

Other locations impacted by these severe thunderstorms include
Newport, Lake St Croix Beach, Willernie, Lakeland Shores, North St.
Paul, Lilydale, Sunfish, Oak Park Heights, St Paul Airport and
Sunfish Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A Tornado Watch remains in effect until 1100 PM CDT for west central
Wisconsin.

LAT...LON 4492 9251 4473 9276 4479 9329 4484 9321
      4489 9318 4507 9298 4505 9238
TIME...MOT...LOC 2246Z 266DEG 37KT 4504 9289 4492 9304 4482 9320 

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

BORGHOFF

531 
WWUS53 KMPX 032259
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
559 PM CDT WED OCT 3 2018

MNC037-123-032309-
/O.CAN.KMPX.SV.W.0157.000000T0000Z-181003T2330Z/
Dakota MN-Ramsey MN-
559 PM CDT WED OCT 3 2018

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN DAKOTA AND
SOUTHEASTERN RAMSEY COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.


LAT...LON 4492 9251 4473 9276 4475 9282 4475 9285
      4477 9288 4478 9294 4477 9297 4478 9302
      4490 9291 4507 9281 4505 9238
TIME...MOT...LOC 2259Z 272DEG 39KT 4505 9272 4490 9281 4477 9293 

$$

MNC163-WIC093-109-032330-
/O.CON.KMPX.SV.W.0157.000000T0000Z-181003T2330Z/
Washington MN-Pierce WI-St. Croix WI-
559 PM CDT WED OCT 3 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR SOUTHERN WASHINGTON...NORTHWESTERN PIERCE AND SOUTHWESTERN ST.
CROIX COUNTIES...

At 559 PM CDT, severe thunderstorms were located along a line
extending from near Willow River State Park to Afton to near Cottage
Grove, moving east at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

These severe storms will be near...
  Roberts around 610 PM CDT.
  River Falls around 615 PM CDT.
  Baldwin around 620 PM CDT.

Other locations impacted by these severe thunderstorms include
Kinnickinnic State Park, Oak Park Heights, Afton State Park, Lake St
Croix Beach, Lakeland, Lakeland Shores, Grey Cloud Township, Willow
River State Park, St Marys Point and Point Douglas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A Tornado Watch remains in effect until 1100 PM CDT for west central
Wisconsin.

LAT...LON 4492 9251 4473 9276 4475 9282 4475 9285
      4477 9288 4478 9294 4477 9297 4478 9302
      4490 9291 4507 9281 4505 9238
TIME...MOT...LOC 2259Z 272DEG 39KT 4505 9272 4490 9281 4477 9293 

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

BORGHOFF

327 
WWUS53 KMPX 032315
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
615 PM CDT WED OCT 3 2018

MNC163-032325-
/O.CAN.KMPX.SV.W.0157.000000T0000Z-181003T2330Z/
Washington MN-
615 PM CDT WED OCT 3 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN WASHINGTON COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 1100 PM CDT for west central
Wisconsin.

LAT...LON 4492 9251 4473 9276 4475 9281 4476 9281
      4489 9263 4506 9256 4505 9238
TIME...MOT...LOC 2315Z 266DEG 37KT 4506 9251 4491 9260 4478 9272 

$$

WIC093-109-032330-
/O.CON.KMPX.SV.W.0157.000000T0000Z-181003T2330Z/
Pierce WI-St. Croix WI-
615 PM CDT WED OCT 3 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR NORTHWESTERN PIERCE AND SOUTH CENTRAL ST. CROIX COUNTIES...

At 615 PM CDT, severe thunderstorms were located along a line
extending from near Houlton to near River Falls to near Kinnickinnic
State Park, moving east at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

These severe storms will be near...
  Baldwin around 630 PM CDT.

Other locations impacted by these severe thunderstorms include
Houlton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

&&

A Tornado Watch remains in effect until 1100 PM CDT for west central
Wisconsin.

LAT...LON 4492 9251 4473 9276 4475 9281 4476 9281
      4489 9263 4506 9256 4505 9238
TIME...MOT...LOC 2315Z 266DEG 37KT 4506 9251 4491 9260 4478 9272 

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

BORGHOFF

417 
WWUS53 KMPX 032326
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
626 PM CDT WED OCT 3 2018

WIC093-109-032335-
/O.EXP.KMPX.SV.W.0157.000000T0000Z-181003T2330Z/
Pierce WI-St. Croix WI-
626 PM CDT WED OCT 3 2018

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN PIERCE AND SOUTH
CENTRAL ST. CROIX COUNTIES WILL EXPIRE AT 630 PM CDT...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with these thunderstorms.

A Tornado Watch remains in effect until 1100 PM CDT for west central
Wisconsin.

LAT...LON 4492 9251 4473 9276 4475 9281 4476 9281
      4489 9263 4506 9256 4505 9238
TIME...MOT...LOC 2325Z 266DEG 37KT 4507 9240 4492 9249 4479 9261 

$$

AMK

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 3, 6:04 PM CDT	Severe Thunderstorm Warning	MPX	Dunn, Pierce, Saint Croix	41 min
Oct 3, 6:06 PM CDT	Tornado Warning	MPX	Pierce, Saint Croix	27 min
Oct 3, 6:44 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Dunn, Eau Claire, Pepin, Pierce	46 min
Oct 3, 12:12 PM CDT	Wind Advisory	MPX	Blue Earth, Brown, Chippewa, Faribault, Freeborn, Goodhue and 12 more	12 hr

Nearby

Severe Thunderstorm Warnings in Minnesota, 2018 Severe Thunderstorm Warnings in Wisconsin, 2018 Every severe thunderstorm warning in 2018

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.