Alert archive / North Dakota / Tornado Warnings in 2021

Tornado Warning 5, NWS Bismarck, ND

June 10, 2021McKenzie County, North Dakota

NWS Bismarck, ND issued this tornado warning at Jun 10, 2021, 6:06 PM CDT for McKenzie County, North Dakota. It was in force for 24 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 10, 2021, 6:06 PM CDT (23:06 UTC)
Expired: Jun 10, 2021, 6:30 PM CDT
In force: 24 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Tornado: Observed
Hail: 1.25 in

County McKenzie County, ND

The radar

The Glasgow radar (KGGW), 206 km from the middle of the area, began a volume at 23:06 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 10, 6:32 PM CDT	TORNADO	4 Sw Sather Dam, ND	STORM CHASER REPORTS WEDGE TORNADO IN PROGRESS SW OF ALEXANDER.

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
Jun 10, 3:30 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 11.1 hours before the alert went out and 205 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: 929 J/kg
Mixed-layer CIN: -480 J/kg
Mixed-layer LCL: 774 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 651 m²/s²
0-3 km storm-relative helicity: 663 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

340 
WFUS53 KBIS 102306
TORBIS
NDC053-102330-
/O.NEW.KBIS.TO.W.0005.210610T2306Z-210610T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Bismarck ND
606 PM CDT Thu Jun 10 2021

The National Weather Service in Bismarck has issued a

* Tornado Warning for...
  West central McKenzie County in northwestern North Dakota...

* Until 630 PM CDT/530 PM MDT/.

* At 606 PM CDT/506 PM MDT/, a confirmed tornado was located 6 miles
  east of Sidney, moving north at 20 mph.

  HAZARD...Damaging tornado and half dollar size hail.

  SOURCE...Weather spotters 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...
  East Fairview.

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 4788 10404 4774 10363 4755 10404
TIME...MOT...LOC 2306Z 185DEG 15KT 4773 10401 

TORNADO...OBSERVED
HAIL...1.25IN

$$

HARGROVE

The office that day

Everything else NWS Bismarck, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 10, 3:33 AM CDT	Heat Advisory	BIS	Dickey, Emmons, LaMoure, Logan, McIntosh	16 hr
Jun 10, 1:12 PM CDT	Wind Advisory	BIS	Billings, Divide, Golden Valley, McKenzie, Mountrail, Williams	5 hr
Jun 10, 4:51 PM CDT	Severe Thunderstorm Warning	BIS	McKenzie	54 min
Jun 10, 5:45 PM CDT	Severe Thunderstorm Warning	BIS	McKenzie, Williams	60 min
Jun 10, 5:55 PM CDT	Tornado Warning	BIS	McKenzie	20 min
Jun 10, 6:16 PM CDT	Tornado Warning	BIS	McKenzie	29 min
Jun 10, 6:30 PM CDT	Tornado Warning	BIS	McKenzie	30 min
Jun 10, 6:35 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	BIS	McKenzie	25 min
Jun 10, 6:54 PM CDT	Tornado Warning	BIS	McKenzie	25 min

Nearby

Tornado Warnings in North Dakota, 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; radar from the NEXRAD Level II archive.