Alert archive / Minnesota / Tornado Warnings in 2021

Tornado Warning 1, NWS Duluth, MN

July 26, 2021Cass County, Itasca County, Minnesota

NWS Duluth, MN issued this tornado warning at Jul 26, 2021, 5:54 PM CDT for Cass County, Itasca County, Minnesota. It was in force for 21 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 26, 2021, 5:54 PM CDT (22:54 UTC)
Expired: Jul 26, 2021, 6:15 PM CDT
In force: 21 min
Issued by: NWS Duluth, MN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

Counties Cass County, MN, Itasca County, MN

What was reported inside it

Time	Report	Where	Remark
Jul 26, 6:15 PM CDT	HAIL 1.5	5 Ne Schley, MN	ESTIMATE AT LEAST PING-PONG BALL SIZE HAIL PER VIDEOS POSTED ON SNAPCHAT. TIME AND LOCATION ESTIMATED.

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

The watch it was issued in

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

Issued	Product	Office	Lasted
Jul 26, 5:22 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 10.9 hours before the alert went out and 152 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: 2151 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 86 m²/s²
0-3 km storm-relative helicity: 234 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

022 
WFUS53 KDLH 262254
TORDLH
MNC021-061-262315-
/O.NEW.KDLH.TO.W.0001.210726T2254Z-210726T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Duluth MN
554 PM CDT Mon Jul 26 2021

The National Weather Service in Duluth MN has issued a

* Tornado Warning for...
  Northwest Itasca County in north central Minnesota...  
  Northwestern Cass County in north central Minnesota...

* Until 615 PM CDT.
    
* At 552 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 10 miles west of Lake Winnibigoshish, or 21 miles east
  of Bemidji, moving southeast at 35 mph.

  HAZARD...Tornado and golf ball size hail.

  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...
  Bena and Federal Dam around 610 PM CDT.

Other locations in the path of this tornadic thunderstorm include
Leech Lake.

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 4742 9442 4772 9441 4744 9386 4724 9417
      4714 9450 4741 9462
TIME...MOT...LOC 2252Z 325DEG 45KT 4748 9442 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

Kossen

The office that day

Everything else NWS Duluth, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 26, 5:41 PM CDT	Special Weather Statement	DLH	Koochiching	19 min
Jul 26, 6:00 PM CDT	Special Weather Statement	DLH	Itasca	15 min
Jul 26, 6:10 PM CDT	Special Weather Statement	DLH	Saint Louis	20 min
Jul 26, 6:14 PM CDT	Severe Thunderstorm Warning	DLH	Itasca	31 min
Jul 26, 6:15 PM CDT	Tornado Warning	DLH	Cass, Itasca	30 min
Jul 26, 6:26 PM CDT	Severe Thunderstorm Warning	DLH	Lake, Saint Louis	64 min
Jul 26, 6:38 PM CDT	Special Weather Statement	DLH	Hubbard	22 min
Jul 26, 6:41 PM CDT	Severe Thunderstorm Warning	DLH	Cass, Itasca	34 min
Jul 26, 6:45 PM CDT	Severe Thunderstorm Warning	DLH	Itasca	45 min
Jul 26, 6:51 PM CDT	Severe Thunderstorm Warning	DLH	Saint Louis	24 min
Jul 26, 6:59 PM CDT	Special Weather Statement	DLH	Cass	16 min

Nearby

Tornado Warnings in Minnesota, 2021 Every tornado warning in 2021 Tornadoes in 2021

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.