Alert archive / Minnesota / Tornado Warnings in 2019

Tornado Warning 16, NWS Sioux Falls, SD

July 18, 2019Murray County, Minnesota

NWS Sioux Falls, SD issued this tornado warning at Jul 18, 2019, 7:21 PM CDT for Murray County, Minnesota. 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
Jul 18, 2019, 7:21 PM CDT (00:21 UTC)
Expired
Jul 18, 2019, 7:45 PM CDT
In force
24 min
Issued by
NWS Sioux Falls, SD
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Murray County, MN

The radar

The Sioux Falls radar (KFSD), 86 km from the middle of the area, began a volume at 00:24 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 18, 5:30 PM CDTTornado WatchSPC4 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.4 hours before the alert went out and 201 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-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2019-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 490 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2019-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
490 J/kg
Mixed-layer CIN
-66 J/kg
Mixed-layer LCL
1579 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
198 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted.

153 
WFUS53 KFSD 190021
TORFSD
MNC101-190045-
/O.NEW.KFSD.TO.W.0016.190719T0021Z-190719T0045Z/

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

The National Weather Service in Sioux Falls has issued a

* Tornado Warning for...
  Southern Murray County in southwestern Minnesota...

* Until 745 PM CDT.
    
* At 721 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Chandler, or 7 miles southwest of Slayton, 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 dangerous storm will be near...
  Slayton around 745 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Hadley, Avoca and Iona.

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 4384 9564 4385 9593 4393 9600 4410 9575
      4387 9555
TIME...MOT...LOC 0021Z 237DEG 8KT 4390 9585 

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

$$

BT
2 follow-up statements
225 
WWUS53 KFSD 190031
SVSFSD

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

MNC101-190045-
/O.CON.KFSD.TO.W.0016.000000T0000Z-190719T0045Z/
Murray MN-
731 PM CDT Thu Jul 18 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR SOUTHERN
MURRAY COUNTY...
    
At 731 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Iona, 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 dangerous storm will be near...
  Slayton around 745 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Hadley, Avoca and Iona.

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 4384 9564 4385 9593 4393 9600 4410 9575
      4387 9555
TIME...MOT...LOC 0031Z 241DEG 8KT 4391 9581 

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

$$

BT
366 
WWUS53 KFSD 190039
SVSFSD

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

MNC101-190048-
/O.EXP.KFSD.TO.W.0016.000000T0000Z-190719T0045Z/
Murray MN-
739 PM CDT Thu Jul 18 2019

...THE TORNADO WARNING FOR SOUTHERN MURRAY COUNTY WILL EXPIRE AT 745
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.

LAT...LON 4384 9564 4385 9593 4393 9600 4410 9575
      4387 9555
TIME...MOT...LOC 0038Z 237DEG 8KT 4392 9579 

$$

BT

Nearby

Tornado Warnings in Minnesota, 2019Every tornado warning in 2019Tornadoes 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.