Severe Thunderstorm Warning 77, NWS Sioux Falls, SD

Issued

Aug 5, 2021, 9:04 PM CDT (02:04 UTC)

Expired

Aug 5, 2021, 9:32 PM CDT

In force

28 min

Issued by

NWS Sioux Falls, SD

Area

Storm-based polygon

Hail

1.25 in

Wind

50.0 mph

County Minnehaha County, SD

The Sioux Falls radar (KFSD), 21 km from the middle of the area, began a volume at 02:06 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.

356 
WUUS53 KFSD 060204
SVRFSD
SDC099-060245-
/O.NEW.KFSD.SV.W.0077.210806T0204Z-210806T0245Z/

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

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for...
  Southwestern Minnehaha County in southeastern South Dakota...

* Until 945 PM CDT.

* At 904 PM CDT, a severe thunderstorm was located over Humboldt, or
  7 miles northeast of Lake Vermillion State Recreation Area, moving
  southeast at 15 mph.

  HAZARD...Half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to vehicles is expected.

Other locations in the path of this severe thunderstorm include
Hartford and Wall Lake.

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 this storm. 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 4370 9678 4350 9698 4350 9706 4366 9713
      4375 9713
TIME...MOT...LOC 0204Z 301DEG 15KT 4368 9710 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH

$$

SSC

218 
WWUS53 KFSD 060222
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
922 PM CDT Thu Aug 5 2021

SDC099-060245-
/O.CON.KFSD.SV.W.0077.000000T0000Z-210806T0245Z/
Minnehaha SD-
922 PM CDT Thu Aug 5 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM CDT
FOR SOUTHWESTERN MINNEHAHA COUNTY...

At 922 PM CDT, Doppler radar indicated a severe thunderstorm capable
of producing half dollar size hail. This storm was located near
Humboldt, or 9 miles east of Lake Vermillion State Recreation Area,
moving southeast at 15 mph.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you are in the path of this storm, prepare immediately for large
hail and damaging winds. People outside should move to a shelter,
preferably inside a strong building and away from windows.

In addition to large hail and damaging winds, continuous cloud to
ground lightning is occurring with this storm.  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 4370 9678 4355 9693 4355 9708 4366 9713
      4373 9701
TIME...MOT...LOC 0222Z 301DEG 15KT 4364 9701 

$$

SSC

285 
WWUS53 KFSD 060232
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
932 PM CDT Thu Aug 5 2021

SDC099-060242-
/O.CAN.KFSD.SV.W.0077.000000T0000Z-210806T0245Z/
Minnehaha SD-
932 PM CDT Thu Aug 5 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MINNEHAHA COUNTY
IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However small hail, gusty
winds and heavy rain are still possible with this thunderstorm.

LAT...LON 4370 9678 4355 9693 4355 9708 4366 9713
      4373 9701
TIME...MOT...LOC 0230Z 301DEG 15KT 4362 9696 

$$

SSC

Severe Thunderstorm Warnings in South Dakota, 2021Every severe thunderstorm warning in 2021

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.