Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 89, NWS Bismarck, ND

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

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 8, 2021, 6:28 PM CDT for McKenzie County, Williams County, North Dakota. It was in force for 47 min. 2 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: Jul 8, 2021, 6:28 PM CDT (23:28 UTC)
Expired: Jul 8, 2021, 7:15 PM CDT
In force: 47 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties McKenzie County, ND, Williams County, ND

The radar

The Minot AFB radar (KMBX), 178 km from the middle of the area, began a volume at 23:31 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
Jul 8, 6:42 PM CDT	TSTM WND GST 58	11 Se Wheelock, ND	NDAWN STATION HOFFLUND.
Jul 8, 7:03 PM CDT	TSTM WND GST 61	2 Ene Watford City, ND	NDAWN STATION 2E WATFORD CITY.

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 8, 4:38 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 11.5 hours before the alert went out and 245 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: 10 J/kg
Mixed-layer CIN: -299 J/kg
Mixed-layer LCL: 873 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 75 m²/s²
0-3 km storm-relative helicity: 138 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

577 
WUUS53 KBIS 082328
SVRBIS
NDC053-105-090015-
/O.NEW.KBIS.SV.W.0089.210708T2328Z-210709T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
628 PM CDT Thu Jul 8 2021

The National Weather Service in Bismarck has issued a

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

* Until 715 PM CDT.

* At 627 PM CDT, severe thunderstorms were located along a line
  extending from 5 miles north of Epping to 14 miles southwest of Ray
  to 12 miles southeast of Williston, moving east at 35 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.

* Severe thunderstorms will be near...
  Ray around 640 PM CDT.

Other locations impacted by these severe thunderstorms include White
Tail Bay Recreation Area, Keene, Lewis And Clark State Park, 
Wheelock, Tobacco Garden Bay Recreation Area, Charlson, and Spring 
Brook.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4820 10355 4838 10352 4838 10289 4837 10283
      4804 10283 4777 10306 4789 10367
TIME...MOT...LOC 2327Z 290DEG 29KT 4835 10333 4816 10328 4801 10345 

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

HOLLAN

1 follow-up statement

215 
WWUS53 KBIS 082343
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
643 PM CDT Thu Jul 8 2021

NDC053-105-090015-
/O.CON.KBIS.SV.W.0089.000000T0000Z-210709T0015Z/
McKenzie ND-Williams ND-
643 PM CDT Thu Jul 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT
FOR NORTHEASTERN MCKENZIE AND SOUTHEASTERN WILLIAMS COUNTIES...

At 643 PM CDT, severe thunderstorms were located along a line
extending from 5 miles south of Ray to 16 miles southeast of Epping
to 9 miles north of Watford City, moving southeast at 30 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.

These severe thunderstorms will remain over mainly rural areas of
northeastern McKenzie and southeastern Williams Counties, including
the following locations... White Tail Bay Recreation Area, Keene,
Lewis And Clark State Park, Wheelock, Tobacco Garden Bay Recreation
Area, Charlson, and Spring Brook.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4820 10355 4838 10341 4838 10293 4837 10283
      4804 10283 4777 10306 4789 10367
TIME...MOT...LOC 2343Z 297DEG 27KT 4827 10320 4808 10315 4793 10332 

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

HOLLAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 6:43 AM CDT	Special Weather Statement	BIS	Divide	47 min
Jul 8, 7:26 AM CDT	Special Weather Statement	BIS	Divide	49 min
Jul 8, 8:16 AM CDT	Special Weather Statement	BIS	Burke	29 min
Jul 8, 4:34 PM CDT	Severe Thunderstorm Warning	BIS	Divide	41 min
Jul 8, 5:00 PM CDT	Severe Thunderstorm Warning	BIS	Divide, Williams	60 min
Jul 8, 5:36 PM CDT	Severe Thunderstorm Warning	BIS	Williams	54 min
Jul 8, 5:38 PM CDT	Severe Thunderstorm Warning	BIS	Slope	52 min
Jul 8, 5:51 PM CDT	Severe Thunderstorm Warning	BIS	Adams, Bowman	54 min
Jul 8, 5:53 PM CDT	Severe Thunderstorm Warning	BIS	McKenzie, Williams	37 min
Jul 8, 6:28 PM CDT	Severe Thunderstorm Warning	BIS	Adams, Bowman, Slope	62 min
Jul 8, 6:34 PM CDT	Special Weather Statement	BIS	Stark	11 min
Jul 8, 6:38 PM CDT	Severe Thunderstorm Warning	BIS	McKenzie	37 min
Jul 8, 6:51 PM CDT	Severe Thunderstorm Warning	BIS	Billings, Stark	54 min
Jul 8, 6:52 PM CDT	Severe Thunderstorm Warning	BIS	Billings, Dunn, McKenzie	68 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.