Alert archive / Minnesota / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 64, NWS Twin Cities, MN

July 17, 2020Todd County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 17, 2020, 9:22 PM CDT for Todd County, Minnesota. It was in force for 53 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, 9:22 PM CDT (02:22 UTC)
Expired: Jul 17, 2020, 10:15 PM CDT
In force: 53 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 70.0 mph

County Todd County, MN

The radar

The Minneapolis radar (KMPX), 187 km from the middle of the area, began a volume at 02:24 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
Jul 17, 10:08 PM CDT	HAIL 1	2 S Hewitt, MN

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
Jul 17, 5:39 PM CDT	Severe Thunderstorm Watch PDS	SPC	8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 2.4 hours before the alert went out and 186 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: 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.

347 
WUUS53 KMPX 180222
SVRMPX
MNC153-180315-
/O.NEW.KMPX.SV.W.0064.200718T0222Z-200718T0315Z/

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

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Northern Todd County in central Minnesota...

* Until 1015 PM CDT.

* At 921 PM CDT, severe thunderstorms were located along a line
  extending from near Bluffton to near Deer Creek, moving southeast
  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.

* Severe thunderstorms will be near...
  Hewitt around 940 PM CDT.
  Bertha around 945 PM CDT.
  Eagle Bend around 950 PM CDT.
  Staples, Clarissa and Staples Airport around 955 PM CDT.
  Browerville around 1005 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4637 9474 4635 9472 4636 9469 4635 9468
      4636 9467 4635 9465 4601 9465 4611 9515
      4637 9515
TIME...MOT...LOC 0221Z 296DEG 34KT 4653 9519 4633 9533 

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

BORGHOFF

2 follow-up statements

604 
WWUS53 KMPX 180234
SVSMPX

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

MNC153-180315-
/O.CON.KMPX.SV.W.0064.000000T0000Z-200718T0315Z/
Todd MN-
934 PM CDT Fri Jul 17 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR NORTHERN TODD COUNTY...

At 934 PM CDT, severe thunderstorms were located along a line
extending from near Wadena to near Hewitt, moving southeast 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...
  Bertha around 945 PM CDT.
  Eagle Bend around 950 PM CDT.
  Staples and Staples Airport around 955 PM CDT.
  Clarissa around 1000 PM CDT.
  Browerville around 1005 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4637 9474 4635 9472 4636 9469 4635 9468
      4636 9467 4635 9465 4601 9465 4611 9515
      4637 9515
TIME...MOT...LOC 0234Z 296DEG 34KT 4648 9504 4628 9518 

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

BORGHOFF

514 
WWUS53 KMPX 180300
SVSMPX

Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1000 PM CDT Fri Jul 17 2020

MNC153-180315-
/O.CON.KMPX.SV.W.0064.000000T0000Z-200718T0315Z/
Todd MN-
1000 PM CDT Fri Jul 17 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR NORTHERN TODD COUNTY...

At 1000 PM CDT, severe thunderstorms were located along a line
extending from near Staples Airport to near Bertha, moving east at 30
mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

These severe storms will be near...
  Browerville around 1020 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4637 9474 4635 9472 4636 9469 4635 9468
      4636 9467 4635 9465 4601 9465 4611 9515
      4637 9515
TIME...MOT...LOC 0300Z 290DEG 27KT 4642 9470 4623 9500 

HAIL...1.00IN
WIND...60MPH
 
$$

BORGHOFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 9:08 PM CDT	Special Weather Statement	MPX	Douglas	67 min
Jul 17, 10:13 PM CDT	Severe Thunderstorm Warning	MPX	Morrison, Todd	62 min
Jul 17, 10:16 PM CDT	Tornado Warning	MPX	Morrison, Todd	44 min
Jul 17, 10:20 PM CDT	Severe Thunderstorm Warning	MPX	Douglas	55 min
Jul 17, 10:54 PM CDT	Severe Thunderstorm Warning	MPX	Douglas, Pope, Stevens	66 min
Jul 17, 10:58 PM CDT	Severe Thunderstorm Warning	MPX	Mille Lacs, Morrison, Stearns, Todd	77 min
Jul 17, 11:51 PM CDT	Tornado Warning	MPX	Pope, Stearns, Swift	28 min
Jul 17, 11:58 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Kandiyohi, Morrison, Stearns	77 min
Jul 18, 12:13 AM CDT	Special Weather Statement	MPX	Kanabec, Mille Lacs	62 min
Jul 18, 12:26 AM CDT	Severe Thunderstorm Warning	MPX	Benton, Isanti, Meeker, Mille Lacs, Sherburne, Stearns and 1 more	49 min
Jul 18, 12:32 AM CDT	Special Weather Statement	MPX	Lac qui Parle, Swift	43 min
Jul 18, 12:44 AM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Kandiyohi, Lac qui Parle, Renville, Swift, Yellow Medicine	61 min
Jul 18, 1:03 AM CDT	Tornado Warning	MPX	Chisago, Isanti, Kanabec	27 min
Jul 18, 1:16 AM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker, Stearns	44 min
Jul 18, 1:19 AM CDT	Special Weather Statement	MPX	Anoka, Chisago, Hennepin, Isanti, Wright	56 min
Jul 18, 1:38 AM CDT	Special Weather Statement	MPX	McLeod, Meeker, Redwood, Renville	52 min
Jul 18, 3:03 AM CDT	Severe Thunderstorm Warning	MPX	Carver, Dakota, Hennepin, Scott, Washington	42 min
Jul 18, 3:43 AM CDT	Special Weather Statement	MPX	Goodhue, Rice	32 min
Jul 18, 4:06 AM CDT	Special Weather Statement	MPX	Watonwan	39 min
Jul 18, 5:09 AM CDT	Special Weather Statement	MPX	Freeborn, Steele, Waseca	66 min
Jul 18, 5:00 PM CDT	Special Weather Statement	MPX	Anoka	30 min
Jul 18, 5:23 PM CDT	Severe Thunderstorm Warning	MPX	Anoka	52 min
Jul 18, 5:48 PM CDT	Tornado Warning	MPX	Anoka	42 min
Jul 18, 6:07 PM CDT	Tornado Warning	MPX	Washington	38 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2020 Every 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.