Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 113, NWS Bismarck, ND

July 22, 2021McKenzie County, Mountrail County, Williams County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 22, 2021, 4:23 PM CDT for McKenzie County, Mountrail County, Williams County, North Dakota. It was in force for 42 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 22, 2021, 4:23 PM CDT (21:23 UTC)
Expired: Jul 22, 2021, 5:05 PM CDT
In force: 42 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties McKenzie County, ND, Mountrail County, ND, Williams County, ND

The radar

The Minot AFB radar (KMBX), 170 km from the middle of the area, began a volume at 21:24 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 nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 9.4 hours before the alert went out and 233 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: 104 J/kg
Mixed-layer CIN: -415 J/kg
Mixed-layer LCL: 1354 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: 10 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

976 
WUUS53 KBIS 222123
SVRBIS
NDC053-061-105-222230-
/O.NEW.KBIS.SV.W.0113.210722T2123Z-210722T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
423 PM CDT Thu Jul 22 2021

The National Weather Service in Bismarck has issued a

* Severe Thunderstorm Warning for...
  North central McKenzie County in northwestern North Dakota...
  Southeastern Williams County in northwestern North Dakota...
  West central Mountrail County in northwestern North Dakota...

* Until 530 PM CDT.

* At 422 PM CDT, a severe thunderstorm was located 15 miles southeast
  of Epping, or 19 miles north of Watford City, moving northeast at
  25 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* This severe thunderstorm will remain over mainly rural areas of
  north central McKenzie, southeastern Williams and west central
  Mountrail Counties, including the following locations... White Tail
  Bay Recreation Area, White Earth, Tobacco Garden Bay Recreation
  Area, Lewis And Clark State Park, Charlson and White Earth Bay
  Recreation Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4791 10322 4797 10338 4806 10342 4818 10338
      4841 10277 4820 10253 4800 10298
TIME...MOT...LOC 2122Z 229DEG 21KT 4808 10320 

HAIL...1.00IN
WIND...60MPH
 
$$

ANGLIN

3 follow-up statements

621 
WWUS53 KBIS 222133
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
433 PM CDT Thu Jul 22 2021

NDC053-061-105-222230-
/O.CON.KBIS.SV.W.0113.000000T0000Z-210722T2230Z/
McKenzie ND-Williams ND-Mountrail ND-
433 PM CDT Thu Jul 22 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR NORTH CENTRAL MCKENZIE...SOUTHEASTERN WILLIAMS AND WEST CENTRAL
MOUNTRAIL COUNTIES...

At 432 PM CDT, a severe thunderstorm was located 15 miles southeast
of Epping, or 22 miles east of Williston, moving northeast at 25 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
White Earth, White Tail Bay Recreation Area, Tobacco Garden Bay
Recreation Area, Lewis And Clark State Park, Charlson and White Earth
Bay Recreation Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

If on or near Lake Sakakawea, get away from the water and move
indoors or inside a vehicle. remember, lightning can strike out to 15
miles from the parent thunderstorm. If you can hear thunder, you are
close enough to be struck by lightning. Move to safe shelter now!  Do
not be caught on the water in a thunderstorm.

&&

LAT...LON 4791 10322 4801 10330 4809 10334 4820 10334
      4841 10277 4820 10253 4800 10298
TIME...MOT...LOC 2132Z 229DEG 21KT 4812 10313 

HAIL...1.50IN
WIND...60MPH
 
$$

ANGLIN

198 
WWUS53 KBIS 222148
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
448 PM CDT Thu Jul 22 2021

NDC053-061-105-222230-
/O.CON.KBIS.SV.W.0113.000000T0000Z-210722T2230Z/
McKenzie ND-Williams ND-Mountrail ND-
448 PM CDT Thu Jul 22 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR NORTH CENTRAL MCKENZIE...EAST CENTRAL WILLIAMS AND WEST CENTRAL
MOUNTRAIL COUNTIES...

At 448 PM CDT, a severe thunderstorm was located 12 miles southeast
of Ray, or 27 miles east of Williston, moving northeast at 25 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
White Earth, White Tail Bay Recreation Area, Tobacco Garden Bay
Recreation Area, Charlson and White Earth Bay Recreation Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

If on or near Lake Sakakawea, get away from the water and move
indoors or inside a vehicle. remember, lightning can strike out to 15
miles from the parent thunderstorm. If you can hear thunder, you are
close enough to be struck by lightning. Move to safe shelter now!  Do
not be caught on the water in a thunderstorm.

&&

LAT...LON 4812 10315 4824 10323 4841 10277 4820 10253
      4799 10301 4798 10303
TIME...MOT...LOC 2148Z 229DEG 21KT 4818 10302 

HAIL...1.25IN
WIND...60MPH
 
$$

ANGLIN

038 
WWUS53 KBIS 222205
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
505 PM CDT Thu Jul 22 2021

NDC053-061-105-222215-
/O.CAN.KBIS.SV.W.0113.000000T0000Z-210722T2230Z/
McKenzie ND-Williams ND-Mountrail ND-
505 PM CDT Thu Jul 22 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL MCKENZIE...EAST
CENTRAL WILLIAMS AND WEST CENTRAL MOUNTRAIL COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.  However gusty winds are
still possible with this thunderstorm.

LAT...LON 4812 10315 4824 10323 4841 10277 4820 10253
      4799 10301 4798 10303
TIME...MOT...LOC 2159Z 229DEG 21KT 4825 10291 

$$

ANGLIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 3:15 PM CDT	Special Weather Statement	BIS	Billings, Golden Valley, McKenzie	30 min
Jul 22, 3:43 PM CDT	Special Weather Statement	BIS	McKenzie	32 min
Jul 22, 4:02 PM CDT	Special Weather Statement	BIS	Billings, Bowman, Golden Valley, Slope	28 min
Jul 22, 4:15 PM CDT	Special Weather Statement	BIS	Dunn	45 min
Jul 22, 4:46 PM CDT	Special Weather Statement	BIS	Bowman, Slope, Stark	44 min
Jul 22, 4:58 PM CDT	Special Weather Statement	BIS	Dunn, Mountrail	32 min
Jul 22, 5:12 PM CDT	Severe Thunderstorm Warning	BIS	Adams, Bowman, Hettinger, Slope	63 min
Jul 22, 5:25 PM CDT	Special Weather Statement	BIS	Dunn, Mercer, Stark	50 min
Jul 22, 6:10 PM CDT	Severe Thunderstorm Warning	BIS	Adams, Grant, Hettinger, Sioux	65 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.