Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 94, NWS Bismarck, ND

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

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 8, 2021, 6:11 PM MDT for Billings County, McKenzie County, North Dakota. It was in force for 64 min. 1 report 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, 6:11 PM MDT (00:11 UTC)
Expired: Jul 8, 2021, 7:15 PM MDT
In force: 64 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Billings County, ND, McKenzie County, ND

The radar

The Bismarck radar (KBIS), 209 km from the middle of the area, began a volume at 00:11 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, 6:40 PM MDT	TSTM WND GST 60	4 Ssw Grassy Butte, ND

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, 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 213 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.

962 
WUUS53 KBIS 090011
SVRBIS
NDC007-053-090115-
/O.NEW.KBIS.SV.W.0094.210709T0011Z-210709T0115Z/

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

The National Weather Service in Bismarck has issued a

* Severe Thunderstorm Warning for...
  North central Billings County in southwestern North Dakota...
  Southwestern McKenzie County in northwestern North Dakota...

* Until 715 PM MDT.

* At 611 PM MDT, a severe thunderstorm was located 12 miles west of
  Grassy Butte, or 26 miles southwest of Watford City, moving east at
  20 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...
  Grassy Butte.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4752 10310 4733 10310 4724 10335 4734 10367
      4753 10377
TIME...MOT...LOC 0011Z 281DEG 17KT 4745 10351 

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

HOLLAN

2 follow-up statements

835 
WWUS53 KBIS 090029
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
629 PM MDT Thu Jul 8 2021

NDC007-053-090115-
/O.CON.KBIS.SV.W.0094.000000T0000Z-210709T0115Z/
Billings ND-McKenzie ND-
629 PM MDT Thu Jul 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM MDT
FOR NORTH CENTRAL BILLINGS AND SOUTHWESTERN MCKENZIE COUNTIES...

At 629 PM MDT, a severe thunderstorm was located near Grassy Butte,
or 27 miles west of Killdeer, moving east 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.

This severe storm will be near...
  Grassy Butte around 640 PM MDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

&&

LAT...LON 4752 10310 4733 10310 4724 10335 4734 10367
      4753 10377
TIME...MOT...LOC 0029Z 289DEG 21KT 4739 10334 

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

HOLLAN

072 
WWUS53 KBIS 090037 CCA
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
637 PM MDT Thu Jul 8 2021

NDC007-053-090130-
/O.COR.KBIS.SV.W.0094.000000T0000Z-210709T0115Z/
Billings ND-McKenzie ND-
637 PM MDT Thu Jul 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM MDT
FOR NORTH CENTRAL BILLINGS AND SOUTHWESTERN MCKENZIE COUNTIES...

At 637 PM MDT, a severe thunderstorm was located one mile west of 
Grassy Butte, or 25 miles west of Killdeer, moving east at 25 mph.

HAZARD...Golf 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.

This severe storm will be near...
  Grassy Butte around 640 PM MDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

&&

LAT...LON 4752 10310 4733 10310 4724 10335 4734 10367
      4753 10377
TIME...MOT...LOC 0029Z 289DEG 21KT 4739 10334 

HAIL...1.75IN
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, 6:14 PM MDT	Severe Thunderstorm Warning	BIS	Dunn, McKenzie, Mountrail	61 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.