Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 36, NWS Bismarck, ND

June 8, 2021Sioux County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jun 8, 2021, 12:59 PM CDT for Sioux County, North Dakota. It was in force for 61 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: Jun 8, 2021, 12:59 PM CDT (17:59 UTC)
Expired: Jun 8, 2021, 2:00 PM CDT
In force: 61 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

County Sioux County, ND

The radar

The Bismarck radar (KBIS), 51 km from the middle of the area, began a volume at 17:58 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, 1:30 PM CDT	HAIL 1.75	6 Nw Prairie Knights Re, ND	HAIL WAS MOSTLY PEA SIZE, BUT THERE WERE SOME LARGER STONES MIXED IN UP TO GOLF BALL SIZE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 6.0 hours before the alert went out and 50 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: 534 J/kg
Mixed-layer CIN: -518 J/kg
Mixed-layer LCL: 1161 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 267 m²/s²
0-3 km storm-relative helicity: 165 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -1.5

Open this sounding in Storm Lab

The text

As transmitted.

394 
WUUS53 KBIS 081759
SVRBIS
NDC085-081900-
/O.NEW.KBIS.SV.W.0036.210608T1759Z-210608T1900Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
1259 PM CDT Tue Jun 8 2021

The National Weather Service in Bismarck has issued a

* Severe Thunderstorm Warning for...
  Northeastern Sioux County in south central North Dakota...

* Until 200 PM CDT.

* At 1259 PM CDT, a severe thunderstorm was located near Prairie
  Knights Resort, or 13 miles north of Fort Yates, and is nearly
  stationary.

  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...
  Cannon Ball.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4617 10088 4640 10086 4638 10081 4640 10074
      4638 10072 4641 10069 4641 10066 4643 10059
      4637 10055 4633 10055 4628 10058 4625 10056
      4623 10056 4617 10062
TIME...MOT...LOC 1759Z 190DEG 3KT 4628 10071 

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

HOLLAN

2 follow-up statements

330 
WWUS53 KBIS 081814
SVSBIS

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

NDC085-081900-
/O.CON.KBIS.SV.W.0036.000000T0000Z-210608T1900Z/
Sioux ND-
114 PM CDT Tue Jun 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM CDT
FOR NORTHEASTERN SIOUX COUNTY...

At 114 PM CDT, a severe thunderstorm was located 5 miles northwest of
Prairie Knights Resort, or 16 miles north of Fort Yates, moving north
at 5 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.

Locations impacted include...
Cannon Ball and Prairie Knights Resort. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.

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

&&

LAT...LON 4640 10086 4638 10081 4640 10074 4638 10072
      4641 10069 4641 10066 4643 10059 4637 10055
      4633 10055 4628 10058 4625 10056 4623 10056
      4623 10087
TIME...MOT...LOC 1814Z 177DEG 5KT 4631 10074 

HAIL...1.75IN
WIND...60MPH
 
$$

HOLLAN

908 
WWUS53 KBIS 081830
SVSBIS

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

NDC085-081900-
/O.CON.KBIS.SV.W.0036.000000T0000Z-210608T1900Z/
Sioux ND-
130 PM CDT Tue Jun 8 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM CDT
FOR NORTHEASTERN SIOUX COUNTY...

At 130 PM CDT, a severe thunderstorm was located 5 miles southeast of
Solen, or 16 miles north of Fort Yates, and is nearly stationary.

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...
Cannon Ball and Prairie Knights Resort. 

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.

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

&&

LAT...LON 4640 10086 4638 10081 4640 10074 4638 10072
      4641 10069 4641 10066 4643 10059 4637 10055
      4633 10055 4628 10058 4625 10056 4623 10056
      4623 10087
TIME...MOT...LOC 1830Z 190DEG 3KT 4632 10074 

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

HOLLAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 7, 7:38 PM CDT	Severe Thunderstorm Warning	BIS	LaMoure, Stutsman	67 min
Jun 7, 7:44 PM CDT	Special Weather Statement	BIS	Emmons	31 min
Jun 7, 7:58 PM CDT	Tornado Warning	BIS	LaMoure, Stutsman	32 min
Jun 7, 8:01 PM CDT	Severe Thunderstorm Warning	BIS	LaMoure, Logan, Stutsman	44 min
Jun 7, 8:23 PM CDT	Severe Thunderstorm Warning	BIS	Logan, McIntosh	52 min
Jun 7, 8:44 PM CDT	Severe Thunderstorm Warning	BIS	LaMoure, Logan, Stutsman	61 min
Jun 7, 8:50 PM CDT	Tornado Warning	BIS	LaMoure, Stutsman	25 min
Jun 7, 9:26 PM CDT	Severe Thunderstorm Warning	BIS	LaMoure	64 min
Jun 7, 10:07 PM CDT	Special Weather Statement	BIS	Dickey	38 min
Jun 7, 10:57 PM CDT	Special Weather Statement	BIS	Logan	48 min
Jun 7, 11:36 PM CDT	Special Weather Statement	BIS	LaMoure	39 min
Jun 7, 11:41 PM CDT	Severe Thunderstorm Warning	BIS	Dickey, LaMoure	49 min
Jun 7, 11:51 PM CDT	Severe Thunderstorm Warning	BIS	Logan, McIntosh	39 min
Jun 8, 12:26 AM CDT	Severe Thunderstorm Warning	BIS	LaMoure	28 min
Jun 8, 1:44 AM CDT	Severe Thunderstorm Warning	BIS	LaMoure, Stutsman	61 min
Jun 8, 1:53 AM CDT	Special Weather Statement	BIS	Stutsman	37 min
Jun 8, 2:27 AM CDT	Special Weather Statement	BIS	Stutsman	33 min
Jun 8, 2:44 AM CDT	Severe Thunderstorm Warning	BIS	LaMoure, Stutsman	61 min
Jun 8, 2:56 AM CDT	Special Weather Statement	BIS	Stutsman	34 min
Jun 8, 3:11 AM CDT	Severe Thunderstorm Warning	BIS	Stutsman	28 min
Jun 8, 3:58 AM CDT	Areal Flood Advisory	BIS	LaMoure, Stutsman	4 hr
Jun 8, 4:00 AM CDT	Severe Thunderstorm Warning	BIS	Stutsman	60 min
Jun 8, 4:46 AM CDT	Severe Thunderstorm Warning	BIS	LaMoure	59 min
Jun 8, 4:57 AM CDT	Severe Thunderstorm Warning	BIS	Stutsman	63 min
Jun 8, 5:13 AM CDT	Areal Flood Advisory	BIS	Stutsman	3 hr
Jun 8, 6:00 AM CDT	Severe Thunderstorm Warning	BIS	LaMoure, Stutsman	60 min
Jun 8, 6:09 AM CDT	Severe Thunderstorm Warning	BIS	LaMoure	66 min
Jun 8, 7:07 AM CDT	Severe Thunderstorm Warning	BIS	Stutsman	38 min
Jun 8, 7:50 AM CDT	Severe Thunderstorm Warning	BIS	Stutsman	55 min
Jun 8, 8:02 AM CDT	Severe Thunderstorm Warning	BIS	Kidder	43 min
Jun 8, 8:15 AM CDT	Areal Flood Advisory	BIS	Kidder, Stutsman	3 hr
Jun 8, 9:04 AM CDT	Severe Thunderstorm Warning	BIS	Kidder	41 min
Jun 8, 10:06 AM CDT	Severe Thunderstorm Warning	BIS	Kidder	39 min
Jun 8, 10:44 AM CDT	Severe Thunderstorm Warning	BIS	Emmons, Kidder, Logan	46 min
Jun 8, 11:07 AM CDT	Flash Flood Warning	BIS	Kidder	3 hr
Jun 8, 11:27 AM CDT	Severe Thunderstorm Warning	BIS	Emmons	33 min
Jun 8, 11:44 AM CDT	Areal Flood Advisory	BIS	Kidder, LaMoure, Stutsman	4 hr
Jun 8, 12:05 PM CDT	Special Weather Statement	BIS	Emmons	55 min
Jun 8, 12:23 PM CDT	Severe Thunderstorm Warning	BIS	Burleigh, Emmons, Kidder	52 min
Jun 8, 12:32 PM CDT	Flash Flood Warning	BIS	Burleigh, Emmons	3 hr
Jun 8, 1:39 PM CDT	Flash Flood Warning Considerable damage threat	BIS	Burleigh, Emmons, Kidder	2 hr
Jun 8, 1:45 PM CDT	Severe Thunderstorm Warning	BIS	Grant, Morton, Sioux	60 min
Jun 8, 2:00 PM CDT	Areal Flood Warning	BIS	Kidder	2 hr
Jun 8, 2:43 PM CDT	Severe Thunderstorm Warning	BIS	Grant, Morton	62 min
Jun 8, 3:34 PM CDT	Areal Flood Advisory	BIS	Grant, Morton, Sioux	3 hr
Jun 8, 3:45 PM CDT	Severe Thunderstorm Warning	BIS	Grant, Morton	60 min
Jun 8, 3:50 PM CDT	Flash Flood Warning	BIS	Grant, Morton	3 hr
Jun 8, 3:57 PM CDT	Areal Flood Warning	BIS	Burleigh, Emmons, Kidder	6 hr
Jun 8, 4:04 PM CDT	Areal Flood Advisory	BIS	LaMoure, Stutsman	10 hr
Jun 8, 4:26 PM CDT	Special Weather Statement	BIS	Burleigh	34 min
Jun 8, 4:41 PM CDT	Severe Thunderstorm Warning	BIS	Grant, Sioux	49 min
Jun 8, 4:50 PM CDT	Special Weather Statement	BIS	Adams	40 min
Jun 8, 5:28 PM CDT	Severe Thunderstorm Warning	BIS	Grant, Sioux	32 min
Jun 8, 6:31 PM CDT	Areal Flood Advisory	BIS	Sioux	10 hr
Jun 8, 6:32 PM CDT	Severe Thunderstorm Warning	BIS	Golden Valley, McKenzie	58 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.