Alert archive / South Dakota / Tornado Warnings in 2019

Tornado Warning 6, NWS Sioux Falls, SD

June 30, 2019Charles Mix County, Douglas County, South Dakota

NWS Sioux Falls, SD issued this tornado warning at Jun 30, 2019, 4:25 PM CDT for Charles Mix County, Douglas County, South Dakota. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 30, 2019, 4:25 PM CDT (21:25 UTC)
Expired: Jun 30, 2019, 5:00 PM CDT
In force: 35 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Charles Mix County, SD, Douglas County, SD

The radar

The Sioux Falls radar (KFSD), 160 km from the middle of the area, began a volume at 21:27 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.

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 9.4 hours before the alert went out and 166 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: 1889 J/kg
Mixed-layer CIN: -336 J/kg
Mixed-layer LCL: 1008 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: -169 m²/s²
0-3 km storm-relative helicity: -67 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -1.1

Open this sounding in Storm Lab

The text

As transmitted.

175 
WFUS53 KFSD 302125
TORFSD
SDC023-043-302200-
/O.NEW.KFSD.TO.W.0006.190630T2125Z-190630T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Sioux Falls SD
425 PM CDT Sun Jun 30 2019

The National Weather Service in Sioux Falls has issued a

* Tornado Warning for...
  Northwestern Charles Mix County in south central South Dakota...
  Northwestern Douglas County in south central South Dakota...

* Until 500 PM CDT.
    
* At 424 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Platte, or 20 miles northwest of Lake Andes,
  moving east at 10 mph.

  HAZARD...Tornado.

  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...
  New Holland around 455 PM CDT.

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 4338 9879 4348 9882 4350 9857 4337 9854
TIME...MOT...LOC 2124Z 271DEG 11KT 4342 9874 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Hanko

2 follow-up statements

633 
WWUS53 KFSD 302136
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
436 PM CDT Sun Jun 30 2019

SDC023-043-302200-
/O.CON.KFSD.TO.W.0006.000000T0000Z-190630T2200Z/
Charles Mix SD-Douglas SD-
436 PM CDT Sun Jun 30 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR
NORTHWESTERN CHARLES MIX AND NORTHWESTERN DOUGLAS COUNTIES...
    
At 435 PM CDT, a severe thunderstorm capable of producing a tornado
was located near New Holland, or 20 miles northwest of Lake Andes,
moving east at 10 mph.

HAZARD...Tornado.

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...
  New Holland around 500 PM CDT.

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 4338 9877 4348 9877 4350 9857 4337 9854
TIME...MOT...LOC 2135Z 255DEG 9KT 4342 9871 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Hanko

510 
WWUS53 KFSD 302154
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
454 PM CDT Sun Jun 30 2019

SDC023-043-302203-
/O.EXP.KFSD.TO.W.0006.000000T0000Z-190630T2200Z/
Charles Mix SD-Douglas SD-
454 PM CDT Sun Jun 30 2019

...THE TORNADO WARNING FOR NORTHWESTERN CHARLES MIX AND NORTHWESTERN
DOUGLAS COUNTIES WILL EXPIRE AT 500 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.

LAT...LON 4338 9877 4348 9877 4350 9857 4337 9854
TIME...MOT...LOC 2153Z 271DEG 11KT 4342 9864 

$$

Hanko

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 4:23 PM CDT	Tornado Warning	FSD	Gregory	37 min
Jun 30, 4:28 PM CDT	Tornado Warning	FSD	Charles Mix	32 min
Jun 30, 5:02 PM CDT	Tornado Warning Tornado observed	FSD	Gregory	28 min
Jun 30, 5:17 PM CDT	Severe Thunderstorm Warning	FSD	Brule, Charles Mix, Gregory	43 min
Jun 30, 5:27 PM CDT	Tornado Warning	FSD	Gregory	33 min
Jun 30, 5:58 PM CDT	Severe Thunderstorm Warning	FSD	Gregory	47 min
Jun 30, 6:10 PM CDT	Tornado Warning	FSD	Gregory	35 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.