Alert archive / South Dakota / Tornado Warnings in 2019

Tornado Warning 12, NWS Sioux Falls, SD

July 17, 2019Hutchinson County, South Dakota

NWS Sioux Falls, SD issued this tornado warning at Jul 17, 2019, 5:22 AM CDT for Hutchinson County, South Dakota. It was in force for 23 min. 6 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: Jul 17, 2019, 5:22 AM CDT (10:22 UTC)
Expired: Jul 17, 2019, 5:45 AM CDT
In force: 23 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Hutchinson County, SD

The radar

The Sioux Falls radar (KFSD), 99 km from the middle of the area, began a volume at 10:25 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, 5:22 AM CDT	TSTM WND DMG	1 N Tripp, SD	LUMBER YARD BUILDINGS LOST PART OF ITS ROOF, FENCES TAKEN OUT.
Jul 17, 5:22 AM CDT	TORNADO 0	4 Nnw Tripp, SD	SIGNIFICANT DAMAGE TO TWO BARNS.
Jul 17, 5:24 AM CDT	TORNADO 0	2 N Tripp, SD	SECOND STORY OF HOME DESTROYED.
Jul 17, 5:33 AM CDT	TSTM WND GST 89	1 Ssw Parkston, SD
Jul 17, 5:35 AM CDT	TSTM WND DMG	Parkston, SD	SEVERAL TREES DOWNED IN PARKSTON.
Jul 17, 5:41 AM CDT	TSTM WND DMG	Olivet, SD	LATE REPORT, SIGNIFICANT TREE DAMAGE THROUGHOUT TOWN.

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, 4:48 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 10.4 hours before the alert went out and 185 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: 788 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 1663 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 195 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 6.7

Open this sounding in Storm Lab

The text

As transmitted.

420 
WFUS53 KFSD 171022
TORFSD
SDC067-171045-
/O.NEW.KFSD.TO.W.0012.190717T1022Z-190717T1045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Sioux Falls SD
522 AM CDT Wed Jul 17 2019

The National Weather Service in Sioux Falls has issued a

* Tornado Warning for...
  Southwestern Hutchinson County in southeastern South Dakota...

* Until 545 AM CDT.
    
* At 521 AM CDT, a severe thunderstorm capable of producing a tornado
  was located near Parkston, moving east at 35 mph.

  HAZARD...Tornado and quarter size hail.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Tripp around 530 AM CDT.
  Kaylor around 540 AM CDT.

Other locations impacted by this tornadic thunderstorm include
Olivet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4325 9811 4343 9811 4341 9759 4317 9766
      4317 9770
TIME...MOT...LOC 1021Z 281DEG 32KT 4334 9804 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Kalin

2 follow-up statements

904 
WWUS53 KFSD 171033
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
533 AM CDT Wed Jul 17 2019

SDC067-171045-
/O.CON.KFSD.TO.W.0012.000000T0000Z-190717T1045Z/
Hutchinson SD-
533 AM CDT Wed Jul 17 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 AM CDT FOR CENTRAL
HUTCHINSON COUNTY...
    
At 532 AM CDT, a severe thunderstorm capable of producing a tornado
was located near Parkston, moving east at 35 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
central Hutchinson County, including the following locations...
Olivet.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4324 9804 4343 9801 4341 9759 4317 9766
      4317 9770
TIME...MOT...LOC 1032Z 275DEG 31KT 4334 9790 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Kalin

560 
WWUS53 KFSD 171044
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
544 AM CDT Wed Jul 17 2019

SDC067-171053-
/O.EXP.KFSD.TO.W.0012.000000T0000Z-190717T1045Z/
Hutchinson SD-
544 AM CDT Wed Jul 17 2019

...THE TORNADO WARNING FOR CENTRAL HUTCHINSON COUNTY WILL EXPIRE AT
545 AM CDT...
    
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area. 

A Severe Thunderstorm Watch remains in effect until 1000 AM CDT for
southeastern South Dakota.

Remember, a Severe Thunderstorm Warning still remains in effect for
Hutchinson county. 

LAT...LON 4324 9804 4343 9801 4341 9759 4317 9766
      4317 9770
TIME...MOT...LOC 1043Z 281DEG 32KT 4332 9779 

$$

Kalin

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 4:07 AM CDT	Excessive Heat Warning	FSD	Bon Homme, Clay, Hanson, Hutchinson, Lincoln, McCook and 4 more	66 hr
Jul 17, 4:07 AM CDT	Heat Advisory	FSD	Aurora, Brule, Charles Mix, Davison, Douglas, Gregory and 4 more	9 hr
Jul 17, 4:09 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Brule, Charles Mix, Gregory	51 min
Jul 17, 4:32 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Brule, Charles Mix, Douglas, Gregory	28 min
Jul 17, 4:51 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Bon Homme, Charles Mix, Davison, Douglas, Gregory and 2 more	39 min
Jul 17, 5:03 AM CDT	Tornado Warning	FSD	Douglas, Hutchinson	27 min
Jul 17, 5:27 AM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Charles Mix, Davison, Hanson, Hutchinson, McCook and 3 more	63 min
Jul 17, 6:17 AM CDT	Severe Thunderstorm Warning	FSD	Clay, Lincoln, McCook, Minnehaha, Turner, Union and 1 more	58 min
Jul 17, 6:20 AM CDT	Tornado Warning	FSD	Clay, Turner, Union	25 min
Jul 17, 6:54 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Union	66 min
Jul 17, 7:06 AM CDT	Flash Flood Warning	FSD	Lincoln, Minnehaha	4 hr
Jul 17, 7:19 AM CDT	Flash Flood Warning	FSD	Union	116 min
Jul 17, 9:02 AM CDT	River Flood Warning	FSD	Lincoln, Minnehaha	67 hr
Jul 17, 9:56 AM CDT	River Flood Warning	FSD	Lincoln	21 days
Jul 17, 5:19 PM CDT	Heat Advisory	FSD	Aurora, Brule, Charles Mix, Davison, Douglas, Gregory and 9 more	28 hr

Nearby

Tornado Warnings in South Dakota, 2019 Every tornado warning in 2019 Tornadoes in 2019

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.