Alert archive / Minnesota / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 65, NWS Twin Cities, MN

July 17, 2020Morrison County, Todd County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 17, 2020, 10:13 PM CDT for Morrison County, Todd County, Minnesota. It was in force for 62 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
Jul 17, 2020, 10:13 PM CDT (03:13 UTC)
Expired
Jul 17, 2020, 11:15 PM CDT
In force
62 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
0.75 in
Wind
70.0 mph

Counties Morrison County, MN, Todd County, MN

The radar

The Minneapolis radar (KMPX), 177 km from the middle of the area, began a volume at 03:13 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, 11:20 PM CDTTSTM WND DMG1 E Bertha, MN10 INCH DIAMETER TREE DOWN AT COUNTY ROAD 24 AND 157TH AVE.

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, 3.2 hours before the alert went out and 176 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.

463 
WUUS53 KMPX 180313
SVRMPX
MNC097-153-180415-
/O.NEW.KMPX.SV.W.0065.200718T0313Z-200718T0415Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
1013 PM CDT Fri Jul 17 2020

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Todd County in central Minnesota...
  Northwestern Morrison County in central Minnesota...

* Until 1115 PM CDT.

* At 1012 PM CDT, severe thunderstorms were located along a line
  extending from near Nisswa to Motley to Clarissa, moving east at 25
  mph.

  HAZARD...70 mph wind gusts.

  SOURCE...Law enforcement. At 910 PM CDT, trees and power lines 
           were coming down in Staples.

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

* Severe thunderstorms will be near...
  Randall around 1110 PM CDT.
  Camp Ripley around 1115 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These storms are producing destructive winds and large damaging hail.
SEEK SHELTER NOW inside a sturdy structure and stay away from
windows!
 
&&

LAT...LON 4637 9474 4635 9470 4636 9467 4631 9455
      4633 9443 4627 9434 4623 9440 4616 9438
      4615 9418 4588 9471 4602 9515 4630 9515
      4638 9492
TIME...MOT...LOC 0312Z 279DEG 22KT 4649 9424 4634 9468 4615 9496 

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

BORGHOFF
1 follow-up statement
161 
WWUS53 KMPX 180406
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1106 PM CDT Fri Jul 17 2020

MNC097-153-180415-
/O.CON.KMPX.SV.W.0065.000000T0000Z-200718T0415Z/
Todd MN-Morrison MN-
1106 PM CDT Fri Jul 17 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT
FOR CENTRAL TODD AND NORTHWESTERN MORRISON COUNTIES...

At 1106 PM CDT, severe thunderstorms were located along a line
extending from 6 miles southeast of Deerwood to near Baxter to
Randall, moving east at 25 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
central Todd and northwestern Morrison Counties, including the
following locations... Cushing, Clotho and Crow Wing State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4627 9454 4633 9443 4627 9434 4623 9440
      4616 9438 4615 9418 4588 9471 4602 9515
      4610 9515
TIME...MOT...LOC 0406Z 279DEG 22KT 4644 9378 4629 9422 4610 9450 

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, 10:16 PM CDTTornado WarningMPXMorrison, Todd44 min
Jul 17, 10:20 PM CDTSevere Thunderstorm WarningMPXDouglas55 min
Jul 17, 10:54 PM CDTSevere Thunderstorm WarningMPXDouglas, Pope, Stevens66 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.