Alert archive / Minnesota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 64, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Aug 5, 2021, 4:32 PM CDT for Lincoln County, Lyon County, Minnesota. It was in force for 43 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
- Aug 5, 2021, 4:32 PM CDT (21:32 UTC)
- Expired
- Aug 5, 2021, 5:15 PM CDT
- In force
- 43 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Lincoln County, MN, Lyon County, MN
The radar
The Sioux Falls radar (KFSD), 112 km from the middle of the area, began a volume at 21:32 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, 4:42 PM CDT | TSTM WND DMG | Ivanhoe, MN | 8 INCH DIAMETER BRANCH DOWN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 9.5 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.
- Mixed-layer CAPE
- 2 J/kg
- Mixed-layer CIN
- -199 J/kg
- Mixed-layer LCL
- 894 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 149 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
295 WUUS53 KFSD 052132 SVRFSD MNC081-083-052215- /O.NEW.KFSD.SV.W.0064.210805T2132Z-210805T2215Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Sioux Falls SD 432 PM CDT Thu Aug 5 2021 The National Weather Service in Sioux Falls has issued a * Severe Thunderstorm Warning for... Northern Lyon County in southwestern Minnesota... Eastern Lincoln County in southwestern Minnesota... * Until 515 PM CDT. * At 431 PM CDT, severe thunderstorms were located along a line extending from near Ghent to near Ivanhoe, moving southeast at 25 mph. HAZARD...60 mph wind gusts and nickel size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Severe thunderstorms will be near... Marshall around 450 PM CDT. Other locations in the path of these severe thunderstorms include Russell and Camden State Park. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4437 9561 4428 9624 4455 9634 4460 9610 TIME...MOT...LOC 2131Z 304DEG 20KT 4450 9596 4447 9631 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...0.88 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ SSC
2 follow-up statements
430 WWUS53 KFSD 052150 SVSFSD Severe Weather Statement National Weather Service Sioux Falls SD 450 PM CDT Thu Aug 5 2021 MNC081-083-052215- /O.CON.KFSD.SV.W.0064.000000T0000Z-210805T2215Z/ Lyon MN-Lincoln MN- 450 PM CDT Thu Aug 5 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR NORTHERN LYON AND SOUTHEASTERN LINCOLN COUNTIES... At 449 PM CDT, Doppler radar indicated severe thunderstorms capable of producing quarter size hail and damaging winds in excess of 60 mph. The threat for the largest hail will be between Ivanhoe and Arco over the next 15 minutes or so. These storms were located along a line extending from near Marshall to near Arco, moving southeast at 25 mph. These severe storms will be near... Marshall around 455 PM CDT. Other locations impacted by these severe thunderstorms include Lynd. PRECAUTIONARY/PREPAREDNESS ACTIONS... In addition to large hail and damaging winds, continuous cloud to ground lightning is occurring with this storm. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. && LAT...LON 4437 9561 4428 9624 4447 9631 4455 9599 TIME...MOT...LOC 2149Z 304DEG 20KT 4445 9586 4442 9620 $$ SSC
671 WWUS53 KFSD 052159 SVSFSD Severe Weather Statement National Weather Service Sioux Falls SD 459 PM CDT Thu Aug 5 2021 MNC081-083-052215- /O.CON.KFSD.SV.W.0064.000000T0000Z-210805T2215Z/ Lyon MN-Lincoln MN- 459 PM CDT Thu Aug 5 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR CENTRAL LYON AND SOUTHEASTERN LINCOLN COUNTIES... At 458 PM CDT, Doppler radar indicated severe thunderstorms capable of producing large hail up to ping pong ball size and damaging winds in excess of 60 mph. These storms were located along a line extending from Marshall to Arco, moving southeast at 25 mph. These severe storms will be near... Arco around 505 PM CDT. Other locations impacted by these severe thunderstorms include Lynd. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you are in the path of these storms, 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 4437 9561 4428 9624 4447 9631 4453 9595 TIME...MOT...LOC 2158Z 304DEG 20KT 4442 9581 4439 9615 $$ SSC
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 5:10 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Lyon | 50 min |
| Aug 5, 6:25 PM CDT | Severe Thunderstorm Warning | FSD | Murray, Pipestone | 37 min |
| Aug 5, 6:51 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Pipestone | 24 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2021Every 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.