Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 46, NWS Bismarck, ND

June 8, 2021McKenzie County, Williams County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jun 8, 2021, 11:14 PM CDT for McKenzie County, Williams County, North Dakota. It was in force for 61 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 8, 2021, 11:14 PM CDT (04:14 UTC)
Expired: Jun 9, 2021, 12:15 AM CDT
In force: 61 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties McKenzie County, ND, Williams County, ND

The radar

The Minot AFB radar (KMBX), 217 km from the middle of the area, began a volume at 04:16 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 8, 11:20 PM CDT	TSTM WND GST 60	2 Sse Skaar, ND
Jun 8, 11:44 PM CDT	TSTM WND GST 73	10 N Fort Union Trading, ND
Jun 8, 11:48 PM CDT	TSTM WND DMG	10 N Fort Union Trading, ND	TREE DOWN FROM SEVERE WIND, ESTIMATED GUST 60MPH. ON ND SIDE OF BORDER WITH MONTANA ON HIGHWAY 2.

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 8, 6:15 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 4.2 hours before the alert went out and 226 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: 558 J/kg
Mixed-layer CIN: -175 J/kg
Mixed-layer LCL: 1718 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 279 m²/s²
0-3 km storm-relative helicity: 351 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.9

Open this sounding in Storm Lab

The text

As transmitted.

711 
WUUS53 KBIS 090414
SVRBIS
NDC053-105-090515-
/O.NEW.KBIS.SV.W.0046.210609T0414Z-210609T0515Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
1114 PM CDT Tue Jun 8 2021

The National Weather Service in Bismarck has issued a

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

* Until 1215 AM CDT/1115 PM MDT/.

* At 1113 PM CDT/1013 PM MDT/, severe thunderstorms were located
  along a line extending from Bainville to 9 miles south of Savage,
  moving east at 40 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Williston.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4819 10404 4826 10313 4736 10312 4733 10346
      4733 10404
TIME...MOT...LOC 0413Z 254DEG 36KT 4813 10419 4733 10428 

HAIL...<.75IN
WIND...60MPH
 
$$

MJONES

3 follow-up statements

467 
WWUS53 KBIS 090426
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
1126 PM CDT Tue Jun 8 2021

NDC053-105-090515-
/O.CON.KBIS.SV.W.0046.000000T0000Z-210609T0515Z/
McKenzie ND-Williams ND-
1126 PM CDT Tue Jun 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM
CDT/1115 PM MDT/ FOR MCKENZIE AND SOUTHWESTERN WILLIAMS COUNTIES...

At 1125 PM CDT/1025 PM MDT/, severe thunderstorms were located along
a line extending from 12 miles northeast of Fort Union Trading Post
to Skaar, moving east at 45 mph.

These are very dangerous storms.

HAZARD...80 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be heavily damaged. Expect 
         considerable damage to roofs, windows, and vehicles. 
         Extensive tree damage and power outages are likely.

Locations impacted include...
Williston, Watford City, Alexander, Arnegard, East Fairview, Grassy
Butte, Theodore Roosevelt National Park North Unit, Fort Union
Trading Post, Trenton, Sather Dam, Cartwright, Lewis And Clark State
Park, Charbonneau, White Tail Bay Recreation Area, Fort Buford State
Historical Site and Rawson.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4819 10404 4826 10313 4736 10312 4733 10346
      4733 10404
TIME...MOT...LOC 0425Z 252DEG 37KT 4816 10393 4736 10403 

HAIL...<.75IN
WIND...80MPH
 
$$

MJONES

889 
WWUS53 KBIS 090450
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
1150 PM CDT Tue Jun 8 2021

NDC053-105-090515-
/O.CON.KBIS.SV.W.0046.000000T0000Z-210609T0515Z/
McKenzie ND-Williams ND-
1150 PM CDT Tue Jun 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM
CDT/1115 PM MDT/ FOR MCKENZIE AND SOUTHWESTERN WILLIAMS COUNTIES...

At 1150 PM CDT/1050 PM MDT/, severe thunderstorms were located along
a line extending from 4 miles northeast of Williston to 13 miles
northeast of Trotters, moving east at 40 mph.

These are very dangerous storms.

HAZARD...80 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be heavily damaged. Expect 
         considerable damage to roofs, windows, and vehicles. 
         Extensive tree damage and power outages are likely.

Locations impacted include...
Williston, Watford City, Alexander, Arnegard, East Fairview, Grassy
Butte, Theodore Roosevelt National Park North Unit, Fort Union
Trading Post, Trenton, Sather Dam, Cartwright, Lewis And Clark State
Park, Charbonneau, White Tail Bay Recreation Area, Fort Buford State
Historical Site and Rawson.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4819 10404 4826 10313 4736 10312 4733 10346
      4733 10404
TIME...MOT...LOC 0450Z 252DEG 36KT 4821 10357 4741 10367 

HAIL...<.75IN
WIND...80MPH
 
$$

MJONES

988 
WWUS53 KBIS 090509
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
1209 AM CDT Wed Jun 9 2021

NDC053-105-090519-
/O.EXP.KBIS.SV.W.0046.000000T0000Z-210609T0515Z/
McKenzie ND-Williams ND-
1209 AM CDT Wed Jun 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR MCKENZIE AND SOUTHWESTERN
WILLIAMS COUNTIES WILL EXPIRE AT 1215 AM CDT/1115 PM MDT/...
            
The storms which prompted the warning have weakened below severe 
limits. Therefore, the warning will be allowed to expire.  However 
gusty winds are still possible with these thunderstorms.

A Severe Thunderstorm Watch remains in effect until 100 AM
CDT/midnight MDT/ for southwestern and northwestern North Dakota.

LAT...LON 4819 10404 4826 10313 4736 10312 4733 10346
      4733 10404
TIME...MOT...LOC 0509Z 254DEG 36KT 4825 10334 4745 10345 

$$

MJONES

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 8, 7:00 PM CDT	Areal Flood Warning	BIS	Grant, Morton	14 hr
Jun 8, 7:25 PM CDT	Severe Thunderstorm Warning	BIS	Golden Valley, McKenzie	65 min
Jun 8, 8:02 PM CDT	Special Weather Statement	BIS	Billings, Golden Valley	43 min
Jun 8, 8:08 PM CDT	Special Weather Statement	BIS	Burke, Mountrail	37 min
Jun 8, 8:12 PM CDT	Severe Thunderstorm Warning	BIS	McKenzie	20 min
Jun 8, 8:22 PM CDT	Severe Thunderstorm Warning	BIS	Billings, Dunn, McKenzie	38 min
Jun 8, 8:57 PM CDT	Special Weather Statement	BIS	Dunn	48 min
Jun 8, 9:34 PM CDT	Special Weather Statement	BIS	Burke, Mountrail, Renville, Ward	41 min
Jun 8, 10:48 PM CDT	Special Weather Statement	BIS	Stark	27 min
Jun 8, 11:28 PM CDT	Areal Flood Advisory	BIS	Hettinger, Stark	5 hr
Jun 8, 11:58 PM CDT	Severe Thunderstorm Warning	BIS	Adams, Grant, Hettinger, Sioux	47 min
Jun 9, 12:01 AM CDT	Severe Thunderstorm Warning	BIS	Grant, Hettinger, Morton, Stark	59 min
Jun 9, 12:43 AM CDT	Severe Thunderstorm Warning	BIS	Grant, Morton, Sioux	47 min
Jun 9, 8:37 AM CDT	River Flood Warning	BIS	Morton, Sioux	23 hr

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.