Alert archive / South Dakota / Tornado Warnings in 2019

Tornado Warning 14, NWS Sioux Falls, SD

July 18, 2019Minnehaha County, South Dakota

NWS Sioux Falls, SD issued this tornado warning at Jul 18, 2019, 5:16 PM CDT for Minnehaha County, South Dakota. It was in force for 29 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: Jul 18, 2019, 5:16 PM CDT (22:16 UTC)
Expired: Jul 18, 2019, 5:45 PM CDT
In force: 29 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Minnehaha County, SD

The radar

The Sioux Falls radar (KFSD), 21 km from the middle of the area, began a volume at 22:17 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 18, 5:17 PM CDT	TORNADO 0	3 Wsw Crooks, SD	LOSS OF PORTION OF METAL ROOF ON OUTBUILDING.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 10.3 hours before the alert went out and 192 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1436 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 142 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

933 
WFUS53 KFSD 182216
TORFSD
SDC099-182245-
/O.NEW.KFSD.TO.W.0014.190718T2216Z-190718T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Sioux Falls SD
516 PM CDT Thu Jul 18 2019

The National Weather Service in Sioux Falls has issued a

* Tornado Warning for...
  Eastern Minnehaha County in southeastern South Dakota...

* Until 545 PM CDT.
    
* At 516 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Crooks, or 10 miles northwest of Sioux Falls,
  moving east at 15 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...
  Crooks around 525 PM CDT.
  Sioux Falls around 530 PM CDT.
  Baltic around 545 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 4385 9646 4381 9645 4358 9646 4355 9690
      4373 9695 4385 9650
TIME...MOT...LOC 2216Z 251DEG 14KT 4366 9686 

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

$$

BT

3 follow-up statements

157 
WWUS53 KFSD 182219
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
519 PM CDT Thu Jul 18 2019

SDC099-182245-
/O.CON.KFSD.TO.W.0014.000000T0000Z-190718T2245Z/
Minnehaha SD-
519 PM CDT Thu Jul 18 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR EASTERN
MINNEHAHA COUNTY...
        
At 518 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Crooks, or 10 miles northwest of Sioux Falls, moving
east at 15 mph.

HAZARD...Tornado.

SOURCE...Weather spotters reported a funnel cloud.

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...
  Crooks around 525 PM CDT.
  Sioux Falls around 530 PM CDT.
  Baltic around 545 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 4385 9646 4381 9645 4358 9646 4355 9690
      4373 9695 4385 9650
TIME...MOT...LOC 2218Z 251DEG 14KT 4366 9685 

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

$$

BT

553 
WWUS53 KFSD 182230
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
530 PM CDT Thu Jul 18 2019

SDC099-182245-
/O.CON.KFSD.TO.W.0014.000000T0000Z-190718T2245Z/
Minnehaha SD-
530 PM CDT Thu Jul 18 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR
NORTHEASTERN MINNEHAHA COUNTY...
        
At 530 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Crooks, or 9 miles north of Sioux Falls, moving
northeast at 15 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Weather spotters reported a funnel cloud.

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...
  Baltic around 545 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 4385 9646 4381 9645 4369 9646 4361 9690
      4373 9695 4385 9650
TIME...MOT...LOC 2230Z 235DEG 14KT 4368 9679 

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

$$

BT

642 
WWUS53 KFSD 182240
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
540 PM CDT Thu Jul 18 2019

SDC099-182250-
/O.EXP.KFSD.TO.W.0014.000000T0000Z-190718T2245Z/
Minnehaha SD-
540 PM CDT Thu Jul 18 2019

...THE TORNADO WARNING FOR NORTHEASTERN MINNEHAHA COUNTY WILL EXPIRE
AT 545 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.

A Tornado Watch remains in effect until midnight CDT for southwestern
Minnesota...and southeastern and east central South Dakota.

LAT...LON 4385 9646 4381 9645 4369 9646 4361 9690
      4373 9695 4385 9650
TIME...MOT...LOC 2240Z 251DEG 14KT 4369 9675 

$$

BT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 7:41 PM CDT	River Flood Warning	FSD	Lincoln	72 hr
Jul 18, 4:09 PM CDT	Heat Advisory	FSD	Aurora, Beadle, Brookings, Brule, Charles Mix, Davison and 12 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.