Alert archive / Minnesota / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 116, NWS Twin Cities, MN

August 3, 2018Kandiyohi County, Meeker County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 3, 2018, 6:28 PM CDT for Kandiyohi County, Meeker County, Minnesota. It was in force for 47 min. 6 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
Aug 3, 2018, 6:28 PM CDT (23:28 UTC)
Expired
Aug 3, 2018, 7:15 PM CDT
In force
47 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Kandiyohi County, MN, Meeker County, MN

The radar

The Minneapolis radar (KMPX), 82 km from the middle of the area, began a volume at 23:29 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

TimeReportWhereRemark
Aug 3, 6:34 PM CDTTORNADO1 Wnw Atwater, MNEF0 TORNADO BEGAN NEAR ATWATER AND TRACKED EAST 11.2 MILES ALONG HIGHWAY 12 TO JUST NORTHWEST OF LITCHFIELD. MOSTLY TREE DAMAGE, BUT SOME STRUCTURAL DAMAGE ALSO OCCURRED. MAX WIND 80 MPH. STRAIGHT LINE WIND DAMAGE SOUTH OF THE TORNADO TRACK.
Aug 3, 6:39 PM CDTTSTM WND DMGAtwater, MNMULTIPLE TREES DOWN IN ATWATER. LAW ENFORCEMENT ALSO REPORTS POWER LINES DOWN AS WELL.
Aug 3, 6:40 PM CDTTSTM WND DMGGrove City, MNSHERIFF'S OFFICE REPORTS ROOF DAMAGE AT HIGHWAY 12 AND 560TH. TIME ESTIMATED.
Aug 3, 6:42 PM CDTTSTM WND DMG1 E Grove City, MNCORRECTS PREVIOUS TSTM WND DMG REPORT FROM 1 E GROVE CITY. PHOTO ON TWITTER OF GARAGE DESTROYED. CAMPER TIPPED OVER, TREES DOWN.
Aug 3, 6:42 PM CDTTSTM WND DMG1 E Grove City, MNPHOTO ON TWITTER OF DESTROYED BUILDING.
Aug 3, 7:02 PM CDTTSTM WND DMGForest City, MNSEVERAL 6 INCH TREE LIMBS DOWN.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.5 hours before the alert went out and 80 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2018-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 42 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2018-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 186 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
42 J/kg
Mixed-layer CIN
-626 J/kg
Mixed-layer LCL
955 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
186 m²/s²
0-3 km storm-relative helicity
260 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.6

Open this sounding in Storm Lab

The text

As transmitted.

386 
WUUS53 KMPX 032328
SVRMPX
MNC067-093-040015-
/O.NEW.KMPX.SV.W.0116.180803T2328Z-180804T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
628 PM CDT FRI AUG 3 2018

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Meeker County in central Minnesota...
  Eastern Kandiyohi County in central Minnesota...

* Until 715 PM CDT.

* At 628 PM CDT, a severe thunderstorm was located near Atwater, or
  10 miles east of Willmar, moving east at 55 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* This severe thunderstorm will be near...
  Grove City around 635 PM CDT.
  Litchfield around 645 PM CDT.
  Dassel around 655 PM CDT.

Other locations impacted by this severe thunderstorm include
Greenleaf, Darwin, Green Lake, Litchfield Airport, Kandiyohi, Strout,
Hawick, Manannah, Lake Koronis Regional Park and Forest City.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4532 9439 4528 9438 4528 9426 4498 9426
      4498 9450 4497 9451 4495 9497 4533 9498
TIME...MOT...LOC 2328Z 268DEG 49KT 4510 9483 

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

BORGHOFF
2 follow-up statements
256 
WWUS53 KMPX 032351
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
651 PM CDT FRI AUG 3 2018

MNC067-040001-
/O.CAN.KMPX.SV.W.0116.000000T0000Z-180804T0015Z/
Kandiyohi MN-
651 PM CDT FRI AUG 3 2018

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN KANDIYOHI COUNTY IS
CANCELLED...

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

LAT...LON 4532 9439 4528 9438 4528 9426 4498 9426
      4498 9450 4497 9451 4497 9472 4532 9475
TIME...MOT...LOC 2351Z 251DEG 36KT 4531 9465 4518 9453 4501 9450 

$$

MNC093-040015-
/O.CON.KMPX.SV.W.0116.000000T0000Z-180804T0015Z/
Meeker MN-
651 PM CDT FRI AUG 3 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT
FOR MEEKER COUNTY...

At 651 PM CDT, severe thunderstorms were located along a line
extending from Manannah to near Litchfield Airport to Greenleaf,
moving east at 40 mph.

HAZARD...70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

These severe storms will be near...
  Dassel around 705 PM CDT.
  Watkins around 710 PM CDT.

Other locations impacted by these severe thunderstorms include
Manannah, Greenleaf, Darwin, Forest City, Litchfield Airport and
Strout.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4532 9439 4528 9438 4528 9426 4498 9426
      4498 9450 4497 9451 4497 9472 4532 9475
TIME...MOT...LOC 2351Z 251DEG 36KT 4531 9465 4518 9453 4501 9450 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...70MPH
 
$$

BORGHOFF
094 
WWUS53 KMPX 040005
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
705 PM CDT FRI AUG 3 2018

MNC093-040015-
/O.CON.KMPX.SV.W.0116.000000T0000Z-180804T0015Z/
Meeker MN-
705 PM CDT FRI AUG 3 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT
FOR EASTERN MEEKER COUNTY...

At 705 PM CDT, severe thunderstorms were located along a line
extending from Watkins to 6 miles west of French Lake to near Dassel,
moving east at 45 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
eastern Meeker County, including the following locations... Forest
City and Darwin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4532 9439 4528 9438 4528 9426 4498 9426
      4498 9450 4516 9444 4532 9454
TIME...MOT...LOC 0005Z 255DEG 39KT 4531 9444 4518 9432 4501 9434 

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

BORGHOFF

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 7:37 AM CDTSpecial Weather StatementMPXMeeker38 min
Aug 3, 7:47 AM CDTSevere Thunderstorm WarningMPXMeeker43 min
Aug 3, 8:12 AM CDTSevere Thunderstorm WarningMPXWright48 min
Aug 3, 8:51 AM CDTSpecial Weather StatementMPXRamsey24 min
Aug 3, 8:54 AM CDTSpecial Weather StatementMPXHennepin36 min
Aug 3, 9:10 AM CDTSevere Thunderstorm WarningMPXDakota, Hennepin, Scott35 min
Aug 3, 9:24 AM CDTSpecial Weather StatementMPXWashington36 min
Aug 3, 9:43 AM CDTSevere Thunderstorm WarningMPXDakota, Goodhue, Washington32 min
Aug 3, 10:36 AM CDTSpecial Weather StatementMPXTodd24 min
Aug 3, 11:36 AM CDTSpecial Weather StatementMPXKanabec, Mille Lacs24 min
Aug 3, 12:02 PM CDTSpecial Weather StatementMPXKanabec, Mille Lacs28 min
Aug 3, 1:09 PM CDTSpecial Weather StatementMPXKanabec, Mille Lacs51 min
Aug 3, 2:13 PM CDTSpecial Weather StatementMPXKanabec32 min
Aug 3, 4:21 PM CDTSpecial Weather StatementMPXStevens39 min
Aug 3, 4:32 PM CDTSpecial Weather StatementMPXLac qui Parle43 min
Aug 3, 4:41 PM CDTSevere Thunderstorm WarningMPXLac qui Parle49 min
Aug 3, 5:41 PM CDTSpecial Weather StatementMPXChippewa, Lac qui Parle, Pope, Swift, Yellow Medicine34 min
Aug 3, 6:04 PM CDTSevere Thunderstorm WarningMPXKandiyohi, Pope, Stearns, Swift41 min
Aug 3, 6:34 PM CDTTornado WarningMPXKandiyohi, Meeker26 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2018Every 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.