Alert archive / South Dakota / Tornado Warnings in 2019

Tornado Warning 3, NWS Sioux Falls, SD

June 15, 2019Brookings County, South Dakota

NWS Sioux Falls, SD issued this tornado warning at Jun 15, 2019, 6:06 PM CDT for Brookings County, South Dakota. It was in force for 24 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 15, 2019, 6:06 PM CDT (23:06 UTC)
Expired: Jun 15, 2019, 6:30 PM CDT
In force: 24 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Brookings County, SD

The radar

The Sioux Falls radar (KFSD), 75 km from the middle of the area, began a volume at 23:07 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, 11.1 hours before the alert went out and 143 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: 7 J/kg
Mixed-layer CIN: -271 J/kg
Mixed-layer LCL: 1198 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 87 m²/s²
0-3 km storm-relative helicity: 109 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

071 
WFUS53 KFSD 152306
TORFSD
SDC011-152330-
/O.NEW.KFSD.TO.W.0003.190615T2306Z-190615T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Sioux Falls SD
606 PM CDT Sat Jun 15 2019

The National Weather Service in Sioux Falls has issued a

* Tornado Warning for...
  South central Brookings County in east central South Dakota...

* Until 630 PM CDT.
    
* At 606 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Brookings, moving southeast at 30 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 tornadic thunderstorm will remain over mainly rural areas of
  south central Brookings County.

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 4429 9691 4433 9685 4420 9663 4420 9683
TIME...MOT...LOC 2306Z 314DEG 25KT 4428 9682 

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

$$

Rogers

2 follow-up statements

166 
WWUS53 KFSD 152315
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
615 PM CDT Sat Jun 15 2019

SDC011-152330-
/O.CON.KFSD.TO.W.0003.000000T0000Z-190615T2330Z/
Brookings SD-
615 PM CDT Sat Jun 15 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR SOUTH
CENTRAL BROOKINGS COUNTY...
    
At 614 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Aurora, or near Brookings, moving southeast at 30
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 tornadic thunderstorm will remain over mainly rural areas of
south central Brookings County.

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 4422 9684 4427 9675 4420 9663 4420 9683
TIME...MOT...LOC 2314Z 315DEG 25KT 4423 9676 

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

$$

Rogers

707 
WWUS53 KFSD 152328
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
628 PM CDT Sat Jun 15 2019

SDC011-152338-
/O.EXP.KFSD.TO.W.0003.000000T0000Z-190615T2330Z/
Brookings SD-
628 PM CDT Sat Jun 15 2019

...THE TORNADO WARNING FOR SOUTH CENTRAL BROOKINGS COUNTY WILL EXPIRE
AT 630 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.  However heavy rain
is still possible with this thunderstorm.

LAT...LON 4422 9684 4427 9675 4420 9663 4420 9683
TIME...MOT...LOC 2328Z 314DEG 25KT 4416 9667 

$$

Rogers

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 15, 6:19 PM CDT	Tornado Warning	FSD	Moody	26 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.