Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 95, NWS Bismarck, ND

July 8, 2021Dunn County, McKenzie County, Mountrail County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 8, 2021, 6:14 PM MDT for Dunn County, McKenzie County, Mountrail County, North Dakota. It was in force for 61 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 8, 2021, 6:14 PM MDT (00:14 UTC)
Expired: Jul 8, 2021, 7:15 PM MDT
In force: 61 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Dunn County, ND, McKenzie County, ND, Mountrail County, ND

The radar

The Minot AFB radar (KMBX), 190 km from the middle of the area, began a volume at 00:17 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 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, 3:38 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 0.2 hours before the alert went out and 207 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: 624 J/kg
Mixed-layer CIN: -153 J/kg
Mixed-layer LCL: 1380 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: -41 m²/s²
0-3 km storm-relative helicity: 27 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.8

Open this sounding in Storm Lab

The text

As transmitted.

880 
WUUS53 KBIS 090014
SVRBIS
NDC025-053-061-090115-
/O.NEW.KBIS.SV.W.0095.210709T0014Z-210709T0115Z/

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

The National Weather Service in Bismarck has issued a

* Severe Thunderstorm Warning for...
  Northwestern Dunn County in southwestern North Dakota...
  Central McKenzie County in northwestern North Dakota...
  South central Mountrail County in northwestern North Dakota...

* Until 815 PM CDT/715 PM MDT/.

* At 714 PM CDT/614 PM MDT/, severe thunderstorms were located along
  a line extending from 14 miles northeast of Watford City to 9 miles
  southwest of Theodore Roosevelt National Park North Unit, moving
  east at 40 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...
  Grassy Butte around 630 PM MDT.
  Little Missouri State Park around 635 PM MDT.
  Mandaree around 740 PM CDT.
  Killdeer around 700 PM MDT.
  Dunn Center around 710 PM MDT.

Other locations impacted by these severe thunderstorms include 
Oakdale, Skunk Creek Bay Recreation Area, Rawson, Johnsons Corner, 
and Pouch Point Recreation Area.

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 4775 10377 4797 10327 4784 10238 4750 10240
      4731 10265 4733 10310 4753 10377
TIME...MOT...LOC 0014Z 289DEG 36KT 4789 10299 4763 10307 4751 10342 

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

HOLLAN

2 follow-up statements

156 
WWUS53 KBIS 090028
SVSBIS

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

NDC025-053-061-090115-
/O.CON.KBIS.SV.W.0095.000000T0000Z-210709T0115Z/
Dunn ND-McKenzie ND-Mountrail ND-
728 PM CDT Thu Jul 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM
CDT/715 PM MDT/ FOR NORTHWESTERN DUNN...CENTRAL MCKENZIE AND SOUTH
CENTRAL MOUNTRAIL COUNTIES...

At 728 PM CDT/628 PM MDT/, severe thunderstorms were located along a
line extending from 10 miles northwest of Mandaree to 7 miles west of
Little Missouri State Park to 5 miles north of Grassy Butte, moving
east at 40 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 storms will be near...
  Mandaree around 740 PM CDT.
  Little Missouri State Park around 640 PM MDT.
  Killdeer around 705 PM MDT.
  Dunn Center around 710 PM MDT.

Other locations impacted by these severe thunderstorms include 
Oakdale, Skunk Creek Bay Recreation Area, Johnsons Corner, and Pouch 
Point Recreation Area.

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 4767 10372 4791 10289 4784 10238 4750 10240
      4731 10265 4733 10310 4753 10377
TIME...MOT...LOC 0028Z 289DEG 36KT 4785 10281 4759 10289 4747 10324 

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

HOLLAN

798 
WWUS53 KBIS 090048
SVSBIS

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

NDC025-053-061-090115-
/O.CON.KBIS.SV.W.0095.000000T0000Z-210709T0115Z/
Dunn ND-McKenzie ND-Mountrail ND-
748 PM CDT Thu Jul 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM
CDT/715 PM MDT/ FOR NORTHWESTERN DUNN...SOUTHEASTERN MCKENZIE AND
SOUTH CENTRAL MOUNTRAIL COUNTIES...

At 748 PM CDT/648 PM MDT/, severe thunderstorms were located along a
line extending from 5 miles northeast of Mandaree to near Little
Missouri State Park to 10 miles east of Grassy Butte, moving east at
35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

These severe storms will be near...
  Killdeer around 710 PM MDT.
  Dunn Center around 720 PM MDT.

Other locations impacted by these severe thunderstorms include
Oakdale, Skunk Creek Bay Recreation Area and Pouch Point Recreation
Area.

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 4769 10309 4788 10269 4784 10238 4750 10240
      4731 10265 4733 10310 4753 10365
TIME...MOT...LOC 0048Z 290DEG 32KT 4779 10260 4753 10268 4741 10303 

HAIL...<.75IN
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, 6:11 PM MDT	Severe Thunderstorm Warning	BIS	Billings, McKenzie	64 min
Jul 8, 6:29 PM MDT	Severe Thunderstorm Warning	BIS	Adams, Bowman	33 min
Jul 8, 6:44 PM MDT	Severe Thunderstorm Warning	BIS	Billings, Dunn, Stark	61 min
Jul 8, 6:50 PM MDT	Severe Thunderstorm Warning	BIS	Billings, Dunn, McKenzie	55 min
Jul 8, 6:58 PM MDT	Special Weather Statement	BIS	Burke, Mountrail, Renville, Ward	47 min
Jul 8, 8:01 PM MDT	Severe Thunderstorm Warning	BIS	Hettinger, Stark	59 min
Jul 8, 8:42 PM MDT	Severe Thunderstorm Warning	BIS	Adams, Grant, Hettinger	63 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.