Alert archive / Minnesota / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 67, NWS Twin Cities, MN

July 17, 2020Douglas County, Pope County, Stevens County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 17, 2020, 10:54 PM CDT for Douglas County, Pope County, Stevens County, Minnesota. It was in force for 66 min. 3 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
Jul 17, 2020, 10:54 PM CDT (03:54 UTC)
Expired
Jul 18, 2020, 12:00 AM CDT
In force
66 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Douglas County, MN, Pope County, MN, Stevens County, MN

The radar

The Minneapolis radar (KMPX), 196 km from the middle of the area, began a volume at 03:55 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

TimeReportWhereRemark
Jul 17, 11:13 PM CDTTSTM WND DMG1 Nw Chokio, MNSWATH OF WIND DAMAGE EXTENDED 3/4 MILE TO THE SOUTHEAST, INCLUDING PART OF CHOKIO, WITH DAMAGING WIND ENDING AT 1118 PM. THE DAMAGE AREA WAS ABOUT 1/4 MILE WIDE. MANY TREES WERE SNAPPED OFF JUST ABOVE THE BASE, AND OTHERS WERE UPROOTED. THE LARGEST TREE WAS 7.
Jul 17, 11:35 PM CDTTSTM WND DMG4 W Cyrus, MNTREE DOWN ACROSS HIGHWAY.
Jul 17, 11:35 PM CDTTSTM WND DMGStarbuck, MNNUMEROUS 3 AND 4 INCH BRANCHES 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.

IssuedProductOfficeLasted
Jul 17, 5:39 PM CDTSevere Thunderstorm Watch PDSSPC8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 3.9 hours before the alert went out and 194 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 00:00Z on 2020-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1995 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 00:00Z on 2020-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 square meters per square second.1939Sfc1 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
1995 J/kg
Mixed-layer CIN
-87 J/kg
Mixed-layer LCL
1267 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
35 m²/s²
0-3 km storm-relative helicity
218 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.8

Open this sounding in Storm Lab

The text

As transmitted.

030 
WUUS53 KMPX 180354
SVRMPX
MNC041-121-149-180500-
/O.NEW.KMPX.SV.W.0067.200718T0354Z-200718T0500Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
1054 PM CDT Fri Jul 17 2020

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Southern Douglas County in west central Minnesota...
  Pope County in west central Minnesota...
  Stevens County in west central Minnesota...

* Until midnight CDT.

* At 1054 PM CDT, severe thunderstorms were located along a line
  extending from near Lake Osakis to Kensington to near Donnelly to
  Collis, moving southeast at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Kensington around 1100 PM CDT.
  Lowry and Cyrus around 1110 PM CDT.
  Chokio around 1115 PM CDT.
  Glenwood, Starbuck and Lake Hattie around 1120 PM CDT.

Other locations impacted by these severe thunderstorms include
Alexandria Airport, Glenwood Airport, Westport, Nelson, Alberta,
Grove Lake, Villard, Fish Lake, Holmes City and Lake Minnewaska.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4576 9625 4576 9577 4581 9576 4598 9515
      4556 9513 4541 9567 4542 9625
TIME...MOT...LOC 0354Z 301DEG 38KT 4595 9517 4578 9572 4572 9594 4564
9646

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

BORGHOFF
2 follow-up statements
879 
WWUS53 KMPX 180413
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1113 PM CDT Fri Jul 17 2020

MNC041-121-149-180500-
/O.CON.KMPX.SV.W.0067.000000T0000Z-200718T0500Z/
Douglas MN-Pope MN-Stevens MN-
1113 PM CDT Fri Jul 17 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT
FOR SOUTHERN DOUGLAS...POPE AND STEVENS COUNTIES...

At 1113 PM CDT, severe thunderstorms were located along a line
extending from 7 miles east of Lake Osakis to Lowry to near Cyrus to
Johnson, moving southeast at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

These severe storms will be near...
  Lowry around 1120 PM CDT.
  Glenwood and Starbuck around 1130 PM CDT.
  Hancock around 1150 PM CDT.

Other locations impacted by these severe thunderstorms include
Alexandria Airport, Glenwood Airport, Westport, Nelson, Alberta,
Grove Lake, Villard, Fish Lake, Holmes City and Lake Minnewaska.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4576 9625 4576 9577 4581 9576 4598 9515
      4556 9513 4541 9567 4542 9625
TIME...MOT...LOC 0413Z 295DEG 31KT 4588 9497 4571 9552 4565 9574 4557
9626

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

BORGHOFF
444 
WWUS53 KMPX 180440
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1140 PM CDT Fri Jul 17 2020

MNC041-121-149-180500-
/O.CON.KMPX.SV.W.0067.000000T0000Z-200718T0500Z/
Douglas MN-Pope MN-Stevens MN-
1140 PM CDT Fri Jul 17 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT
FOR SOUTHEASTERN DOUGLAS...POPE AND SOUTHERN STEVENS COUNTIES...

At 1140 PM CDT, severe thunderstorms were located along a line
extending from 10 miles southwest of Sauk Centre to near Glenwood to
near Hancock, moving southeast at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

These severe storms will be near...
  Glenwood around 1145 PM CDT.

Other locations impacted by these severe thunderstorms include
Glenwood Airport, Westport, Lake Emily, Grove Lake, Long Beach,
Villard, Sedan, Lake Minnewaska, Morris Airport and Forada.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4560 9601 4569 9569 4584 9514 4556 9513
      4541 9567 4542 9625
TIME...MOT...LOC 0440Z 295DEG 29KT 4567 9515 4560 9536 4550 9587 

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

BORGHOFF

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 17, 9:08 PM CDTSpecial Weather StatementMPXDouglas67 min
Jul 17, 9:22 PM CDTSevere Thunderstorm WarningMPXTodd53 min
Jul 17, 10:13 PM CDTSevere Thunderstorm WarningMPXMorrison, Todd62 min
Jul 17, 10:16 PM CDTTornado WarningMPXMorrison, Todd44 min
Jul 17, 10:20 PM CDTSevere Thunderstorm WarningMPXDouglas55 min
Jul 17, 10:58 PM CDTSevere Thunderstorm WarningMPXMille Lacs, Morrison, Stearns, Todd77 min
Jul 17, 11:51 PM CDTTornado WarningMPXPope, Stearns, Swift28 min
Jul 17, 11:58 PM CDTSevere Thunderstorm WarningMPXBenton, Kandiyohi, Morrison, Stearns77 min
Jul 18, 12:13 AM CDTSpecial Weather StatementMPXKanabec, Mille Lacs62 min
Jul 18, 12:26 AM CDTSevere Thunderstorm WarningMPXBenton, Isanti, Meeker, Mille Lacs, Sherburne, Stearns and 1 more49 min
Jul 18, 12:32 AM CDTSpecial Weather StatementMPXLac qui Parle, Swift43 min
Jul 18, 12:44 AM CDTSevere Thunderstorm WarningMPXChippewa, Kandiyohi, Lac qui Parle, Renville, Swift, Yellow Medicine61 min
Jul 18, 1:03 AM CDTTornado WarningMPXChisago, Isanti, Kanabec27 min
Jul 18, 1:16 AM CDTSevere Thunderstorm WarningMPXKandiyohi, Meeker, Stearns44 min
Jul 18, 1:19 AM CDTSpecial Weather StatementMPXAnoka, Chisago, Hennepin, Isanti, Wright56 min
Jul 18, 1:38 AM CDTSpecial Weather StatementMPXMcLeod, Meeker, Redwood, Renville52 min
Jul 18, 3:03 AM CDTSevere Thunderstorm WarningMPXCarver, Dakota, Hennepin, Scott, Washington42 min
Jul 18, 3:43 AM CDTSpecial Weather StatementMPXGoodhue, Rice32 min
Jul 18, 4:06 AM CDTSpecial Weather StatementMPXWatonwan39 min
Jul 18, 5:09 AM CDTSpecial Weather StatementMPXFreeborn, Steele, Waseca66 min
Jul 18, 5:00 PM CDTSpecial Weather StatementMPXAnoka30 min
Jul 18, 5:23 PM CDTSevere Thunderstorm WarningMPXAnoka52 min
Jul 18, 5:48 PM CDTTornado WarningMPXAnoka42 min
Jul 18, 6:07 PM CDTTornado WarningMPXWashington38 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2020Every severe thunderstorm warning in 2020

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.