Alert archive / Minnesota / Tornado Warnings in 2018

Tornado Warning 9, NWS Sioux Falls, SD

June 24, 2018Lincoln County, Lyon County, Minnesota

NWS Sioux Falls, SD issued this tornado warning at Jun 24, 2018, 3:44 PM CDT for Lincoln County, Lyon County, Minnesota. It was in force for 31 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: Jun 24, 2018, 3:44 PM CDT (20:44 UTC)
Expired: Jun 24, 2018, 4:15 PM CDT
In force: 31 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Lincoln County, MN, Lyon County, MN

The radar

The Sioux Falls radar (KFSD), 107 km from the middle of the area, began a volume at 20:44 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
Jun 24, 3:51 PM CDT	TORNADO	2 Ne Arco, MN	REPORT VIA SOCIAL MEDIA WITH PHOTO.

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, 8.7 hours before the alert went out and 188 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: 512 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 469 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: 21 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.3

Open this sounding in Storm Lab

The text

As transmitted.

854 
WFUS53 KFSD 242044
TORFSD
MNC081-083-242115-
/O.NEW.KFSD.TO.W.0009.180624T2044Z-180624T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Sioux Falls SD
344 PM CDT SUN JUN 24 2018

The National Weather Service in Sioux Falls has issued a

* Tornado Warning for...
  West central Lyon County in southwestern Minnesota...
  Northeastern Lincoln County in southwestern Minnesota...

* Until 415 PM CDT.
    
* At 344 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Arco, or 18 miles west of Marshall, moving
  northeast 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 tornadic thunderstorm will remain over mainly rural areas of
  west central Lyon and northeastern Lincoln Counties.

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 4434 9612 4441 9627 4460 9615 4450 9591
TIME...MOT...LOC 2044Z 204DEG 7KT 4439 9615 

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

$$

Weisser

3 follow-up statements

977 
WWUS53 KFSD 242055
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
355 PM CDT SUN JUN 24 2018

MNC081-083-242115-
/O.CON.KFSD.TO.W.0009.000000T0000Z-180624T2115Z/
Lyon MN-Lincoln MN-
355 PM CDT SUN JUN 24 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CDT FOR WEST
CENTRAL LYON AND NORTHEASTERN LINCOLN COUNTIES...
    
At 352 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Arco, or 17 miles west of Marshall, moving northeast
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.

Locations impacted include...
Arco.

At 350 pm CDT...a photo of a tornado was shared from about 5 miles 
north northeast of Arco.

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 4434 9612 4441 9627 4460 9615 4450 9591
TIME...MOT...LOC 2052Z 204DEG 7KT 4441 9614 

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

$$

Weisser

907 
WWUS53 KFSD 242106
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
406 PM CDT SUN JUN 24 2018

MNC081-083-242115-
/O.CON.KFSD.TO.W.0009.000000T0000Z-180624T2115Z/
Lyon MN-Lincoln MN-
406 PM CDT SUN JUN 24 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CDT FOR WEST
CENTRAL LYON AND NORTHEASTERN LINCOLN COUNTIES...
    
At 405 PM CDT, a confirmed tornado was located near Arco, or 15 miles
west of Marshall, moving northeast at 10 mph.

HAZARD...Damaging tornado.

SOURCE...Public confirmed tornado.

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.

Locations impacted include...
Arco.

At 359 pm CDT...funnel clouds were still being reported with this 
storm.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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 4434 9612 4441 9621 4460 9615 4450 9591
TIME...MOT...LOC 2105Z 229DEG 8KT 4443 9610 

TORNADO...OBSERVED
HAIL...<.75IN

$$

Weisser

365 
WWUS53 KFSD 242117
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
417 PM CDT SUN JUN 24 2018

MNC081-083-242125-
/O.EXP.KFSD.TO.W.0009.000000T0000Z-180624T2115Z/
Lyon MN-Lincoln MN-
417 PM CDT SUN JUN 24 2018

...THE TORNADO WARNING FOR WEST CENTRAL LYON AND NORTHEASTERN LINCOLN
COUNTIES HAS EXPIRED...
                
The storm which prompted the warning has weakened below severe 
limits, and no longer appears capable of producing a tornado. It is 
still indicating broad, weak rotation so the storm will continue to 
be watched carefully. Heavy rain is still possible with this 
thunderstorm.

LAT...LON 4434 9612 4441 9621 4460 9615 4450 9591
TIME...MOT...LOC 2115Z 204DEG 7KT 4445 9609 

$$

Weisser

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 4:54 AM CDT	River Flood Warning	FSD	Cottonwood, Jackson	28 days
Jun 24, 4:54 AM CDT	River Flood Warning	FSD	Lyon	4 days
Jun 24, 4:14 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Lyon, Murray	28 min
Jun 24, 4:52 PM CDT	Flash Flood Warning Emergency	FSD	Jackson, Nobles	4 hr
Jun 24, 5:04 PM CDT	Tornado Warning	FSD	Murray	26 min
Jun 24, 5:32 PM CDT	Tornado Warning	FSD	Murray	29 min
Jun 24, 5:54 PM CDT	Flash Flood Warning	FSD	Murray	3 hr

Nearby

Tornado Warnings in Minnesota, 2018 Every tornado warning in 2018 Tornadoes in 2018

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.