Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 90, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Jul 8, 2021, 5:28 PM MDT for Adams County, Bowman County, Slope County, North Dakota. It was in force for 62 min. 4 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, 5:28 PM MDT (23:28 UTC)
- Expired
- Jul 8, 2021, 6:30 PM MDT
- In force
- 62 min
- Issued by
- NWS Bismarck, ND
- Area
- Storm-based polygon
- Hail
- 2.5 in
- Wind
- 70.0 mph
Counties Adams County, ND, Bowman County, ND, Slope County, ND
The radar
The Bismarck radar (KBIS), 204 km from the middle of the area, began a volume at 23:28 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, 5:48 PM MDT | HAIL 1.75 | 9 Nne Buffalo Springs, ND | LASTED ABOUT 6 MINUTES. |
| Jul 8, 6:15 PM MDT | TSTM WND GST 63 | 3 W Buffalo Springs, ND | AWOS STATION KBWW BOWMAN AIRPORT. |
| Jul 8, 6:20 PM MDT | HAIL 1 | 3 E Reeder, ND | REPORT FROM MPING: QUARTER (1.00 IN.). |
| Jul 8, 6:24 PM MDT | HAIL 1 | 4 E Reeder, ND | HEAVY RAIN TOO 0.70. |
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 12:00Z, 11.5 hours before the alert went out and 208 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.
- 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
The text
As transmitted.
067
WUUS53 KBIS 082328 RRA
SVRBIS
NDC001-011-087-090030-
/O.NEW.KBIS.SV.W.0090.210708T2328Z-210709T0030Z/
BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
528 PM MDT Thu Jul 8 2021
The National Weather Service in Bismarck has issued a
* Severe Thunderstorm Warning for...
Eastern Bowman County in southwestern North Dakota...
Southeastern Slope County in southwestern North Dakota...
Western Adams County in southwestern North Dakota...
* Until 630 PM MDT.
* At 527 PM MDT, a severe thunderstorm was located 10 miles north of
Bowman, moving southeast at 15 mph.
HAZARD...Tennis ball size hail and 70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
considerable tree damage. Wind damage is also likely to
mobile homes, roofs, and outbuildings.
* Locations impacted include...
Bowman and Scranton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4595 10347 4641 10359 4648 10344 4651 10310
4594 10269
TIME...MOT...LOC 2327Z 326DEG 13KT 4633 10337
HAIL...2.50IN
WIND...70MPH
$$
EDWARDS4 follow-up statements
041
WWUS53 KBIS 082340
SVSBIS
Severe Weather Statement
National Weather Service Bismarck ND
540 PM MDT Thu Jul 8 2021
NDC001-011-087-090030-
/O.CON.KBIS.SV.W.0090.000000T0000Z-210709T0030Z/
Bowman ND-Slope ND-Adams ND-
540 PM MDT Thu Jul 8 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM MDT
FOR EASTERN BOWMAN...SOUTHEASTERN SLOPE AND WESTERN ADAMS COUNTIES...
At 539 PM MDT, a severe thunderstorm was located 10 miles south of
Amidon, moving southeast at 15 mph.
HAZARD...Tennis ball size hail and 70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
considerable tree damage. Wind damage is also likely to
mobile homes, roofs, and outbuildings.
This severe storm will be near...
Scranton around 635 PM MDT.
Reeder around 645 PM MDT.
Other locations impacted by this severe thunderstorm include Bowman
Haley Dam, Bucyrus, Griffin, Buffalo Springs and Gascoyne.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 4639 10359 4645 10342 4649 10308 4594 10269
4595 10347
TIME...MOT...LOC 2339Z 323DEG 13KT 4633 10327
HAIL...2.50IN
WIND...70MPH
$$
EDWARDS804
WWUS53 KBIS 082352
SVSBIS
Severe Weather Statement
National Weather Service Bismarck ND
552 PM MDT Thu Jul 8 2021
NDC001-011-087-090030-
/O.CON.KBIS.SV.W.0090.000000T0000Z-210709T0030Z/
Bowman ND-Slope ND-Adams ND-
552 PM MDT Thu Jul 8 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM MDT
FOR EASTERN BOWMAN...SOUTHEASTERN SLOPE AND WESTERN ADAMS COUNTIES...
At 552 PM MDT, a severe thunderstorm was located 7 miles north of
Scranton, or 11 miles northeast of Bowman, moving southeast at 25
mph.
HAZARD...Tennis ball size hail and 70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
considerable tree damage. Wind damage is also likely to
mobile homes, roofs, and outbuildings.
This severe storm will be near...
Scranton around 605 PM MDT.
Reeder around 630 PM MDT.
Other locations impacted by this severe thunderstorm include Bowman
Haley Dam, Bucyrus, Buffalo Springs and Gascoyne.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 4629 10347 4639 10331 4641 10302 4594 10269
4595 10347
TIME...MOT...LOC 2352Z 313DEG 21KT 4625 10318
HAIL...2.50IN
WIND...70MPH
$$
EDWARDS102
WWUS53 KBIS 090005
SVSBIS
Severe Weather Statement
National Weather Service Bismarck ND
605 PM MDT Thu Jul 8 2021
NDC087-090014-
/O.CAN.KBIS.SV.W.0090.000000T0000Z-210709T0030Z/
Slope ND-
605 PM MDT Thu Jul 8 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SLOPE COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1000 PM MDT for
southwestern North Dakota.
LAT...LON 4595 10331 4628 10331 4628 10293 4594 10269
TIME...MOT...LOC 0004Z 335DEG 18KT 4619 10312
$$
NDC001-011-090030-
/O.CON.KBIS.SV.W.0090.000000T0000Z-210709T0030Z/
Bowman ND-Adams ND-
605 PM MDT Thu Jul 8 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM MDT
FOR EASTERN BOWMAN AND WESTERN ADAMS COUNTIES...
At 604 PM MDT, a severe thunderstorm was located near Scranton, or 13
miles east of Bowman, moving southeast at 20 mph.
HAZARD...Tennis ball size hail and 70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
considerable tree damage. Wind damage is also likely to
mobile homes, roofs, and outbuildings.
This severe storm will be near...
Scranton around 610 PM MDT.
Reeder around 630 PM MDT.
Other locations impacted by this severe thunderstorm include Bowman
Haley Dam, Bucyrus, Buffalo Springs and Gascoyne.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 4595 10331 4628 10331 4628 10293 4594 10269
TIME...MOT...LOC 0004Z 335DEG 18KT 4619 10312
HAIL...2.50IN
WIND...70MPH
$$
EDWARDS737
WWUS53 KBIS 090020
SVSBIS
Severe Weather Statement
National Weather Service Bismarck ND
620 PM MDT Thu Jul 8 2021
NDC001-011-090030-
/O.CON.KBIS.SV.W.0090.000000T0000Z-210709T0030Z/
Bowman ND-Adams ND-
620 PM MDT Thu Jul 8 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM MDT
FOR EASTERN BOWMAN AND WESTERN ADAMS COUNTIES...
At 620 PM MDT, a severe thunderstorm was located over Reeder, or 15
miles northwest of Hettinger, moving southeast at 35 mph.
HAZARD...Two inch hail and 70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
considerable tree damage. Wind damage is also likely to
mobile homes, roofs, and outbuildings.
This severe thunderstorm will remain over mainly rural areas of
eastern Bowman and western Adams Counties, including the following
locations... Bucyrus and Gascoyne.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 4595 10317 4628 10318 4628 10293 4594 10269
TIME...MOT...LOC 0020Z 306DEG 30KT 4611 10292
HAIL...2.00IN
WIND...70MPH
$$
EDWARDSThe office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 5:43 AM MDT | Special Weather Statement | BIS | Divide | 47 min |
| Jul 8, 6:26 AM MDT | Special Weather Statement | BIS | Divide | 49 min |
| Jul 8, 7:16 AM MDT | Special Weather Statement | BIS | Burke | 29 min |
| Jul 8, 3:34 PM MDT | Severe Thunderstorm Warning | BIS | Divide | 41 min |
| Jul 8, 4:00 PM MDT | Severe Thunderstorm Warning | BIS | Divide, Williams | 60 min |
| Jul 8, 4:36 PM MDT | Severe Thunderstorm Warning | BIS | Williams | 54 min |
| Jul 8, 4:38 PM MDT | Severe Thunderstorm Warning | BIS | Slope | 52 min |
| Jul 8, 4:51 PM MDT | Severe Thunderstorm Warning | BIS | Adams, Bowman | 54 min |
| Jul 8, 4:53 PM MDT | Severe Thunderstorm Warning | BIS | McKenzie, Williams | 37 min |
| Jul 8, 5:28 PM MDT | Severe Thunderstorm Warning | BIS | McKenzie, Williams | 47 min |
| Jul 8, 5:34 PM MDT | Special Weather Statement | BIS | Stark | 11 min |
| Jul 8, 5:38 PM MDT | Severe Thunderstorm Warning | BIS | McKenzie | 37 min |
| Jul 8, 5:51 PM MDT | Severe Thunderstorm Warning | BIS | Billings, Stark | 54 min |
| Jul 8, 5:52 PM MDT | Severe Thunderstorm Warning | BIS | Billings, Dunn, McKenzie | 68 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 2021Every 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.