Alert archive / Minnesota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 69, NWS Sioux Falls, SD

August 5, 2021Murray County, Pipestone County, Minnesota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Aug 5, 2021, 7:12 PM CDT for Murray County, Pipestone County, Minnesota. It was in force for 48 min. 2 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 5, 2021, 7:12 PM CDT (00:12 UTC)
Expired: Aug 5, 2021, 8:00 PM CDT
In force: 48 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Murray County, MN, Pipestone County, MN

The radar

The Sioux Falls radar (KFSD), 68 km from the middle of the area, began a volume at 00:11 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 5, 7:12 PM CDT	TSTM WND DMG	2 S Holland, MN	FARMER REPORTED FLATTENED CORN IN A FIELD ABOUT 1.5 MILES SOUTH OF HOLLAND. TIME ESTIMATED FROM RADAR.
Aug 5, 7:55 PM CDT	HAIL 1	Edgerton, MN	VIA SOCIAL MEDIA. TIME ESTIMATED VIA RADAR.

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

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 0.2 hours before the alert went out and 211 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: 835 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 1549 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 259 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

587 
WUUS53 KFSD 060012
SVRFSD
MNC101-117-060100-
/O.NEW.KFSD.SV.W.0069.210806T0012Z-210806T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
712 PM CDT Thu Aug 5 2021

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for...
  Southwestern Murray County in southwestern Minnesota...
  Northeastern Pipestone County in southwestern Minnesota...

* Until 800 PM CDT.

* At 712 PM CDT, severe thunderstorms were located along a line
  extending from near Current Lake to near Pipestone, moving
  southeast at 20 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.

Other locations in the path of these severe thunderstorms include
Lake Wilson, Edgerton and Chandler.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with these storms. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 4393 9582 4385 9607 4385 9621 4414 9640
      4420 9613
TIME...MOT...LOC 0012Z 320DEG 18KT 4410 9602 4402 9625 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

SSC

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 5, 7:28 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Pipestone	32 min
Aug 5, 7:53 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Murray, Nobles, Pipestone, Rock	41 min
Aug 5, 8:24 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Rock	51 min
Aug 5, 8:32 PM CDT	Severe Thunderstorm Warning	FSD	Nobles	43 min
Aug 5, 8:57 PM CDT	Severe Thunderstorm Warning Considerable damage threat	FSD	Rock	48 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2021 Every severe thunderstorm warning in 2021

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.