Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 51, NWS Bismarck, ND

June 10, 2021McKenzie County, Williams County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jun 10, 2021, 5:45 PM CDT for McKenzie County, Williams County, North Dakota. It was in force for 60 min. 3 reports 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, 5:45 PM CDT (22:45 UTC)
Expired: Jun 10, 2021, 6:45 PM CDT
In force: 60 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.25 in
Wind: 70.0 mph

Counties McKenzie County, ND, Williams County, ND

The radar

The Glasgow radar (KGGW), 210 km from the middle of the area, began a volume at 22:48 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, 6:12 PM CDT	TORNADO	9 Nne Skaar, ND	LAW ENFORCEMENT CONFIRMED A TORNADO VISIBLE FROM THE INTERSECTIONS OF RED WING AND FRENCH CREEK ROADS. LOCATION OF TORNADO ESTIMATED BASED ON RADAR.
Jun 10, 6:30 PM CDT	HAIL 1.75	8 Sw Sather Dam, ND	ONGOING AT THE TIME OF CALL.
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, 10.8 hours before the alert went out and 209 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.

310 
WUUS53 KBIS 102245
SVRBIS
NDC053-105-102345-
/O.NEW.KBIS.SV.W.0051.210610T2245Z-210610T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
545 PM CDT Thu Jun 10 2021

The National Weather Service in Bismarck has issued a

* Severe Thunderstorm Warning for...
  Western McKenzie County in northwestern North Dakota...
  Southwestern Williams County in northwestern North Dakota...

* Until 645 PM CDT/545 PM MDT/.

* At 543 PM CDT/443 PM MDT/, a line of severe thunderstorms were 
  located around Sidney, moving east northeast at 15 mph.

  HAZARD...70 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* This severe thunderstorm will remain over mainly rural areas of
  western McKenzie and southwestern Williams Counties, including the
  following locations... Sather Dam, Cartwright, Fort Buford State
  Historical Site, Trenton, Fort Union and Charbonneau.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1000 PM CDT/900 PM MDT/ for
southwestern and northwestern North Dakota.

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4807 10405 4819 10365 4740 10361 4733 10396
      4733 10403 4735 10405
TIME...MOT...LOC 2243Z 264DEG 12KT 4761 10406 

HAIL...1.25IN
WIND...70MPH
 
$$

HARGROVE

1 follow-up statement

475 
WWUS53 KBIS 102300
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
600 PM CDT Thu Jun 10 2021

NDC053-105-102345-
/O.CON.KBIS.SV.W.0051.000000T0000Z-210610T2345Z/
McKenzie ND-Williams ND-
600 PM CDT Thu Jun 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM
CDT/545 PM MDT/ FOR WESTERN MCKENZIE AND SOUTHWESTERN WILLIAMS
COUNTIES...

At 559 PM CDT/459 PM MDT/, a line of severe thunderstorms were 
located 10 miles north of Skaar, or 14 miles southeast of Sidney, 
moving east northeast at 20 mph.

HAZARD...70 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

Locations impacted include...
Williston, Fairview, Alexander, Fort Union Trading Post, East
Fairview, Skaar, Trenton, Sather Dam, Cartwright, Fort Buford State
Historical Site, Charbonneau and Fort Union.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1000 PM CDT/900 PM MDT/ for
southwestern and northwestern North Dakota.

For your protection move to an interior room on the lowest floor of a
building.

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. This storm may cause serious injury and significant
property damage.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4807 10405 4819 10365 4740 10361 4733 10396
      4733 10403 4735 10405
TIME...MOT...LOC 2259Z 244DEG 16KT 4752 10403 

HAIL...1.25IN
WIND...70MPH
 
$$

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, 5:55 PM CDT	Tornado Warning	BIS	McKenzie	20 min
Jun 10, 6:06 PM CDT	Tornado Warning Tornado observed	BIS	McKenzie	24 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

Severe Thunderstorm Warnings in North Dakota, 2021 Every severe thunderstorm warning 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.