Alert archive / Minnesota / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 134, NWS Twin Cities, MN

August 27, 2018Freeborn County, Steele County, Waseca County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 27, 2018, 4:42 PM CDT for Freeborn County, Steele County, Waseca County, Minnesota. It was in force for 48 min. 1 report 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: Aug 27, 2018, 4:42 PM CDT (21:42 UTC)
Expired: Aug 27, 2018, 5:30 PM CDT
In force: 48 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Freeborn County, MN, Steele County, MN, Waseca County, MN

The radar

The Minneapolis radar (KMPX), 115 km from the middle of the area, began a volume at 21:42 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
Aug 27, 4:50 PM CDT	TSTM WND DMG	5 Ssw Morristown, MN	TREES DOWN. REPORT RELAYED VIA DISPATCH. TIME ESTIMATED FROM RADAR.

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
Aug 27, 2:57 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.7 hours before the alert went out and 115 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.

284 
WUUS53 KMPX 272142
SVRMPX
MNC047-147-161-272230-
/O.NEW.KMPX.SV.W.0134.180827T2142Z-180827T2230Z/

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

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Freeborn County in south central Minnesota...
  Steele County in south central Minnesota...
  Southeastern Waseca County in south central Minnesota...

* Until 530 PM CDT.

* At 442 PM CDT, severe thunderstorms were located along a line
  extending from near Otisco to Matawan to Walters, moving northeast
  at 50 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Freeborn around 445 PM CDT.
  Waseca, New Richland and Hartland around 450 PM CDT.
  Albert Lea and Ellendale around 500 PM CDT.
  Owatonna, Medford, Clarks Grove and Hayward around 510 PM CDT.
  Geneva and Hollandale around 515 PM CDT.
  Blooming Prairie around 530 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4350 9365 4384 9365 4385 9369 4398 9371
      4420 9343 4419 9305 4350 9305
TIME...MOT...LOC 2142Z 245DEG 42KT 4397 9363 4384 9362 4361 9369 

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

BORGHOFF

4 follow-up statements

973 
WWUS53 KMPX 272152
SVSMPX

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

MNC047-147-161-272230-
/O.CON.KMPX.SV.W.0134.000000T0000Z-180827T2230Z/
Freeborn MN-Steele MN-Waseca MN-
452 PM CDT MON AUG 27 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR FREEBORN...STEELE AND EASTERN WASECA COUNTIES...

At 452 PM CDT, severe thunderstorms were located along a line
extending from near Waseca Airport to New Richland to Alden, moving
northeast at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

These severe storms will be near...
  Waseca and New Richland around 455 PM CDT.
  Albert Lea and Ellendale around 505 PM CDT.
  Clarks Grove and Hayward around 510 PM CDT.
  Owatonna, Medford, Geneva and Hollandale around 515 PM CDT.
  Blooming Prairie around 530 PM CDT.

Other locations impacted by these severe thunderstorms include Waseca
Airport, Albert Lea Airport, Lemond, Myrtle, Owatonna Airport,
Clinton Falls, Merton, Manchester, Steele Center and Otisco.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4350 9365 4384 9359 4408 9358 4420 9343
      4419 9305 4350 9305
TIME...MOT...LOC 2152Z 245DEG 42KT 4401 9351 4388 9350 4365 9357 

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

JRB

443 
WWUS53 KMPX 272200
SVSMPX

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

MNC047-147-161-272230-
/O.CON.KMPX.SV.W.0134.000000T0000Z-180827T2230Z/
Freeborn MN-Steele MN-Waseca MN-
500 PM CDT MON AUG 27 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR FREEBORN...STEELE AND EASTERN WASECA COUNTIES...

At 500 PM CDT, severe thunderstorms were located along a line
extending from near Lemond to near Hope to Albert Lea Airport, moving
northeast 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...
  Owatonna and Medford around 510 PM CDT.
  Geneva and Hollandale around 515 PM CDT.
  Blooming Prairie around 525 PM CDT.

Other locations impacted by these severe thunderstorms include
Clinton Falls, Albert Lea Airport, Lemond, Merton, Myrtle,
Manchester, Steele Center, Bixby, Deerfield and Owatonna Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4350 9365 4387 9348 4416 9348 4420 9343
      4419 9305 4350 9305
TIME...MOT...LOC 2200Z 243DEG 40KT 4405 9333 4393 9333 4369 9339 

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

JRB

263 
WWUS53 KMPX 272213
SVSMPX

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

MNC161-272222-
/O.CAN.KMPX.SV.W.0134.000000T0000Z-180827T2230Z/
Waseca MN-
513 PM CDT MON AUG 27 2018

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN WASECA 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 4350 9358 4393 9336 4420 9334 4419 9305
      4350 9305
TIME...MOT...LOC 2212Z 245DEG 44KT 4410 9314 4398 9314 4374 9320 

$$

MNC047-147-272230-
/O.CON.KMPX.SV.W.0134.000000T0000Z-180827T2230Z/
Freeborn MN-Steele MN-
513 PM CDT MON AUG 27 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR FREEBORN AND STEELE COUNTIES...

At 512 PM CDT, severe thunderstorms were located along a line
extending from near Merton to near Steele Center to Hollandale,
moving northeast at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

These severe thunderstorms will remain over mainly rural areas of
Freeborn and Steele Counties, including the following locations...
Clinton Falls, Albert Lea Airport, Merton, Myrtle, Manchester, Steele
Center, Bixby, Owatonna Airport and Moland.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4350 9358 4393 9336 4420 9334 4419 9305
      4350 9305
TIME...MOT...LOC 2212Z 245DEG 44KT 4410 9314 4398 9314 4374 9320 

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

JRB

071 
WWUS53 KMPX 272223
SVSMPX

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

MNC047-147-272233-
/O.EXP.KMPX.SV.W.0134.000000T0000Z-180827T2230Z/
Freeborn MN-Steele MN-
523 PM CDT MON AUG 27 2018

...THE SEVERE THUNDERSTORM WARNING FOR FREEBORN AND STEELE COUNTIES
WILL EXPIRE AT 530 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 4350 9358 4393 9336 4420 9334 4419 9305
      4350 9305
TIME...MOT...LOC 2223Z 245DEG 42KT 4415 9299 4403 9299 4379 9305 

$$

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, 3:52 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Faribault, Nicollet, Waseca	53 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, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.