Alert archive / Minnesota / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 132, NWS Twin Cities, MN

August 27, 20184 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 27, 2018, 3:52 PM CDT for 4 counties in Minnesota. It was in force for 53 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 27, 2018, 3:52 PM CDT (20:52 UTC)
Expired: Aug 27, 2018, 4:45 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 Blue Earth County, MN, Faribault County, MN, Nicollet County, MN, Waseca County, MN

The radar

The Minneapolis radar (KMPX), 94 km from the middle of the area, began a volume at 20:54 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 27, 2:57 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 8.9 hours before the alert went out and 93 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: 1465 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 698 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 232 m²/s²
0-3 km storm-relative helicity: 249 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 4.7

Open this sounding in Storm Lab

The text

As transmitted.

414 
WUUS53 KMPX 272052
SVRMPX
MNC013-043-103-161-272145-
/O.NEW.KMPX.SV.W.0132.180827T2052Z-180827T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
352 PM CDT MON AUG 27 2018

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Northwestern Faribault County in south central Minnesota...
  Blue Earth County in south central Minnesota...
  Northwestern Waseca County in south central Minnesota...
  Southeastern Nicollet County in south central Minnesota...

* Until 445 PM CDT.

* At 352 PM CDT, severe thunderstorms were located along a line
  extending from Madelia to near Winnebago, moving northeast at 55
  mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Lake Crystal, Mapleton and Good Thunder around 405 PM CDT.
  Nicollet and Pemberton around 415 PM CDT.
  Eagle Lake and St. Clair around 420 PM CDT.
  Janesville and Madison Lake around 425 PM CDT.
  Elysian around 430 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4385 9426 4385 9436 4419 9437 4433 9421
      4426 9403 4424 9402 4424 9377 4420 9376
      4420 9342 4368 9412
TIME...MOT...LOC 2052Z 220DEG 49KT 4403 9445 4379 9414 

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

BORGHOFF

4 follow-up statements

099 
WWUS53 KMPX 272104
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
404 PM CDT MON AUG 27 2018

MNC013-043-103-161-272145-
/O.CON.KMPX.SV.W.0132.000000T0000Z-180827T2145Z/
Faribault MN-Blue Earth MN-Waseca MN-Nicollet MN-
404 PM CDT MON AUG 27 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR NORTHWESTERN FARIBAULT...BLUE EARTH...NORTHWESTERN WASECA AND
SOUTHEASTERN NICOLLET COUNTIES...

At 403 PM CDT, severe thunderstorms were located along a line
extending from near Lake Crystal to near Mapleton, moving northeast
at 55 mph.

HAZARD...70 mph wind gusts and quarter size hail.

SOURCE...Public.

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

These severe storms will be near...
  Nicollet around 415 PM CDT.
  St. Clair and Pemberton around 420 PM CDT.
  Eagle Lake, Janesville and Madison Lake around 425 PM CDT.
  Elysian around 430 PM CDT.

Other locations impacted by these severe thunderstorms include
Skyline, Alma City, Garden City, Mankato Airport, Smiths Mill and
Judson.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4385 9426 4385 9436 4419 9437 4433 9421
      4426 9403 4424 9402 4424 9377 4420 9376
      4420 9342 4368 9412
TIME...MOT...LOC 2103Z 220DEG 49KT 4414 9432 4390 9401 

HAIL...1.00IN
WIND...70MPH
 
$$

JRB

254 
WWUS53 KMPX 272122
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
422 PM CDT MON AUG 27 2018

MNC013-043-103-161-272145-
/O.CON.KMPX.SV.W.0132.000000T0000Z-180827T2145Z/
Faribault MN-Blue Earth MN-Waseca MN-Nicollet MN-
422 PM CDT MON AUG 27 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR NORTH CENTRAL FARIBAULT...BLUE EARTH...NORTHWESTERN WASECA AND
SOUTHEASTERN NICOLLET COUNTIES...

At 422 PM CDT, severe thunderstorms were located along a line
extending from Oshawa to near St. Clair, moving northeast at 55 mph.

HAZARD...70 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

These severe storms will be near...
  Janesville around 425 PM CDT.
  Madison Lake around 430 PM CDT.
  Elysian around 435 PM CDT.

Other locations impacted by these severe thunderstorms include
Skyline, Alma City, Garden City, Mankato Airport, Smiths Mill and
Judson.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4387 9408 4397 9413 4419 9437 4433 9421
      4426 9403 4424 9402 4424 9377 4420 9376
      4420 9342 4373 9405
TIME...MOT...LOC 2122Z 220DEG 49KT 4432 9411 4408 9380 

HAIL...1.00IN
WIND...70MPH
 
$$

JRB

786 
WWUS53 KMPX 272129
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
429 PM CDT MON AUG 27 2018

MNC043-272138-
/O.CAN.KMPX.SV.W.0132.000000T0000Z-180827T2145Z/
Faribault MN-
429 PM CDT MON AUG 27 2018

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL FARIBAULT COUNTY
IS CANCELLED...

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

A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
south central Minnesota.

LAT...LON 4388 9385 4404 9406 4422 9434 4433 9421
      4426 9403 4424 9402 4424 9377 4420 9376
      4420 9342
TIME...MOT...LOC 2128Z 219DEG 47KT 4432 9413 4413 9374 

$$

MNC013-103-161-272145-
/O.CON.KMPX.SV.W.0132.000000T0000Z-180827T2145Z/
Blue Earth MN-Waseca MN-Nicollet MN-
429 PM CDT MON AUG 27 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR NORTHEASTERN BLUE EARTH...NORTHWESTERN WASECA AND SOUTHEASTERN
NICOLLET COUNTIES...

At 428 PM CDT, severe thunderstorms were located along a line
extending from near Oshawa to Smiths Mill, moving northeast at 55
mph.

HAZARD...70 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

These severe storms will be near...
  Elysian around 435 PM CDT.

Other locations impacted by these severe thunderstorms include
Skyline, Alma City, Mankato Airport, Smiths Mill and Judson.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4388 9385 4404 9406 4422 9434 4433 9421
      4426 9403 4424 9402 4424 9377 4420 9376
      4420 9342
TIME...MOT...LOC 2128Z 219DEG 47KT 4432 9413 4413 9374 

HAIL...1.00IN
WIND...70MPH
 
$$

JRB

629 
WWUS53 KMPX 272139 RRA
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
439 PM CDT MON AUG 27 2018

MNC013-103-161-272149-
/O.EXP.KMPX.SV.W.0132.000000T0000Z-180827T2145Z/
Blue Earth MN-Waseca MN-Nicollet MN-
439 PM CDT MON AUG 27 2018

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BLUE EARTH...
NORTHWESTERN WASECA AND SOUTHEASTERN NICOLLET COUNTIES WILL EXPIRE AT
445 PM CDT...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
south central Minnesota.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
The Twin Cities.

LAT...LON 4388 9385 4404 9406 4422 9434 4433 9421
      4426 9403 4424 9402 4424 9377 4420 9376
      4420 9342
TIME...MOT...LOC 2139Z 220DEG 49KT 4443 9400 4424 9361 

$$

JRB

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 27, 1:01 AM CDT	Special Weather Statement	MPX	Dakota	29 min
Aug 27, 1:53 AM CDT	Special Weather Statement	MPX	Goodhue	67 min
Aug 27, 1:44 PM CDT	Special Weather Statement	MPX	Benton	31 min
Aug 27, 2:03 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Isanti, Kanabec, Mille Lacs	27 min
Aug 27, 3:17 PM CDT	Severe Thunderstorm Warning	MPX	Faribault, Martin, Watonwan	58 min
Aug 27, 3:38 PM CDT	Severe Thunderstorm Warning	MPX	Pope, Stearns, Todd	47 min
Aug 27, 4:14 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Nicollet, Rice, Scott, Sibley	61 min
Aug 27, 4:17 PM CDT	Special Weather Statement	MPX	Morrison	43 min
Aug 27, 4:35 PM CDT	Special Weather Statement	MPX	Benton, Sherburne	70 min
Aug 27, 4:42 PM CDT	Severe Thunderstorm Warning	MPX	Freeborn, Steele, Waseca	48 min
Aug 27, 5:02 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Dakota, Hennepin, Ramsey, Scott, Washington	58 min
Aug 27, 5:05 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue, Rice	55 min
Aug 27, 5:07 PM CDT	Special Weather Statement	MPX	Kanabec, Mille Lacs	38 min
Aug 27, 5:16 PM CDT	Tornado Warning	MPX	Goodhue, Rice	44 min
Aug 27, 5:32 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Hennepin, Isanti, Ramsey, Sherburne, Wright	43 min
Aug 27, 5:47 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	58 min
Aug 27, 5:54 PM CDT	Special Weather Statement	MPX	Freeborn	36 min
Aug 27, 6:03 PM CDT	Severe Thunderstorm Warning	MPX	Washington	57 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.