Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 105, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Jul 16, 2021, 9:28 PM CDT for Morton County, Stark County, North Dakota. It was in force for 22 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 16, 2021, 9:28 PM CDT (02:28 UTC)
- Expired
- Jul 16, 2021, 9:50 PM CDT
- In force
- 22 min
- Issued by
- NWS Bismarck, ND
- Area
- Storm-based polygon
- Hail
- 2.0 in
- Wind
- 60.0 mph
Counties Morton County, ND, Stark County, ND
The radar
The Bismarck radar (KBIS), 110 km from the middle of the area, began a volume at 02:29 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 16, 9:28 PM CDT | HAIL 1.75 | 5 Wnw Hebron, ND | TIME ESTIMATED FROM RADAR. |
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 00:00Z, 2.5 hours before the alert went out and 114 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
- 1026 J/kg
- Mixed-layer CIN
- -86 J/kg
- Mixed-layer LCL
- 1949 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 454 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 11.5
The text
As transmitted.
653
WUUS53 KBIS 170228
SVRBIS
NDC059-089-170300-
/O.NEW.KBIS.SV.W.0105.210717T0228Z-210717T0300Z/
BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
928 PM CDT Fri Jul 16 2021
The National Weather Service in Bismarck has issued a
* Severe Thunderstorm Warning for...
Northwestern Morton County in south central North Dakota...
Northeastern Stark County in southwestern North Dakota...
* Until 1000 PM CDT/900 PM MDT/.
* At 928 PM CDT/828 PM MDT/, a severe thunderstorm was located near
Hebron, or 16 miles northwest of Glen Ullin, moving southwest at 20
mph.
HAZARD...Two inch 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...
Hebron and Richardton.
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 4686 10241 4701 10215 4698 10214 4698 10205
4695 10200 4674 10214
TIME...MOT...LOC 0228Z 039DEG 16KT 4693 10213
HAIL...2.00IN
WIND...60MPH
$$
GALE3 follow-up statements
809
WWUS53 KBIS 170238
SVSBIS
Severe Weather Statement
National Weather Service Bismarck ND
838 PM MDT Fri Jul 16 2021
NDC059-170248-
/O.CAN.KBIS.SV.W.0105.000000T0000Z-210717T0300Z/
Morton ND-
838 PM MDT Fri Jul 16 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN MORTON COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4686 10241 4701 10215 4698 10214 4698 10210
4681 10209 4674 10214
TIME...MOT...LOC 0238Z 039DEG 16KT 4690 10217
$$
NDC089-170300-
/O.CON.KBIS.SV.W.0105.000000T0000Z-210717T0300Z/
Stark ND-
838 PM MDT Fri Jul 16 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM MDT
FOR NORTHEASTERN STARK COUNTY...
At 838 PM MDT, a severe thunderstorm was located 5 miles west of
Hebron, or 17 miles west of Glen Ullin, moving southwest at 20 mph.
HAZARD...Two inch 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...
Richardton.
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 4686 10241 4701 10215 4698 10214 4698 10210
4681 10209 4674 10214
TIME...MOT...LOC 0238Z 039DEG 16KT 4690 10217
HAIL...2.00IN
WIND...60MPH
$$
GALE316
WWUS53 KBIS 170243
SVSBIS
Severe Weather Statement
National Weather Service Bismarck ND
843 PM MDT Fri Jul 16 2021
NDC089-170300-
/O.CON.KBIS.SV.W.0105.000000T0000Z-210717T0300Z/
Stark ND-
843 PM MDT Fri Jul 16 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM MDT
FOR EAST CENTRAL STARK COUNTY...
At 843 PM MDT, a severe thunderstorm was located 5 miles east of
Richardton, or 18 miles west of Glen Ullin, moving southwest at 20
mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Richardton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4686 10241 4695 10221 4690 10210 4681 10209
4674 10214
TIME...MOT...LOC 0243Z 038DEG 18KT 4686 10222
HAIL...1.25IN
WIND...60MPH
$$
GALE538
WWUS53 KBIS 170250
SVSBIS
Severe Weather Statement
National Weather Service Bismarck ND
850 PM MDT Fri Jul 16 2021
NDC089-170259-
/O.CAN.KBIS.SV.W.0105.000000T0000Z-210717T0300Z/
Stark ND-
850 PM MDT Fri Jul 16 2021
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL STARK COUNTY IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However heavy rain is
still possible with this thunderstorm.
LAT...LON 4686 10241 4695 10221 4690 10210 4681 10209
4674 10214
TIME...MOT...LOC 0246Z 039DEG 16KT 4684 10225
$$
GALEThe office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 7:04 PM CDT | Special Weather Statement | BIS | Oliver | 26 min |
| Jul 16, 7:08 PM CDT | Special Weather Statement | BIS | Slope | 37 min |
| Jul 16, 7:52 PM CDT | Special Weather Statement | BIS | Mercer | 23 min |
| Jul 16, 8:00 PM CDT | Severe Thunderstorm Warning | BIS | Mercer, Oliver | 30 min |
| Jul 16, 8:29 PM CDT | Severe Thunderstorm Warning | BIS | Mercer, Oliver | 31 min |
| Jul 16, 8:57 PM CDT | Severe Thunderstorm Warning | BIS | Mercer, Morton, Stark | 33 min |
| Jul 16, 11:39 PM CDT | Special Weather Statement | BIS | Slope | 51 min |
| Jul 17, 12:55 AM CDT | Special Weather Statement | BIS | Sheridan | 35 min |
| Jul 17, 1:32 AM CDT | Special Weather Statement | BIS | Sheridan | 28 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.