Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 162, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Aug 30, 2021, 4:54 PM MDT for Grant County, Morton County, North Dakota. It was in force for 38 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
- Aug 30, 2021, 4:54 PM MDT (22:54 UTC)
- Expired
- Aug 30, 2021, 5:32 PM MDT
- In force
- 38 min
- Issued by
- NWS Bismarck, ND
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
Counties Grant County, ND, Morton County, ND
The radar
The Bismarck radar (KBIS), 67 km from the middle of the area, began a volume at 22:53 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 |
|---|---|---|---|
| Aug 30, 12:38 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 10.9 hours before the alert went out and 71 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
- 8 J/kg
- Mixed-layer CIN
- -262 J/kg
- Mixed-layer LCL
- 1949 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 93 m²/s²
- 0-3 km storm-relative helicity
- 131 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
494
WUUS53 KBIS 302254
SVRBIS
NDC037-059-302345-
/O.NEW.KBIS.SV.W.0162.210830T2254Z-210830T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
554 PM CDT Mon Aug 30 2021
The National Weather Service in Bismarck has issued a
* Severe Thunderstorm Warning for...
Southwestern Morton County in south central North Dakota...
North central Grant County in south central North Dakota...
* Until 645 PM CDT/545 PM MDT/.
* At 553 PM CDT/453 PM MDT/, a severe thunderstorm was located 8
miles east of Heart Butte Dam, or 16 miles southeast of Glen Ullin,
moving southeast at 15 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...
Carson.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4670 10182 4671 10130 4640 10130 4637 10169
TIME...MOT...LOC 2253Z 325DEG 15KT 4661 10163
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
CJS2 follow-up statements
903
WWUS53 KBIS 302312
SVSBIS
Severe Weather Statement
National Weather Service Bismarck ND
612 PM CDT Mon Aug 30 2021
NDC037-059-302345-
/O.CON.KBIS.SV.W.0162.000000T0000Z-210830T2345Z/
Morton ND-Grant ND-
612 PM CDT Mon Aug 30 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM
CDT/545 PM MDT/ FOR SOUTHWESTERN MORTON AND NORTH CENTRAL GRANT
COUNTIES...
At 612 PM CDT/512 PM MDT/, a severe thunderstorm was located 8 miles
north of Carson, or 16 miles northeast of Elgin, moving southeast at
15 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Carson and Lark.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4667 10177 4671 10130 4640 10130 4637 10169
TIME...MOT...LOC 2312Z 325DEG 15KT 4654 10156
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
CJS699
WWUS53 KBIS 302332
SVSBIS
Severe Weather Statement
National Weather Service Bismarck ND
632 PM CDT Mon Aug 30 2021
NDC037-059-302341-
/O.CAN.KBIS.SV.W.0162.000000T0000Z-210830T2345Z/
Morton ND-Grant ND-
632 PM CDT Mon Aug 30 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MORTON AND NORTH
CENTRAL GRANT COUNTIES IS CANCELLED...
The storm between Almont and Carson 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.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
in Bismarck.
LAT...LON 4667 10177 4671 10130 4640 10130 4637 10169
TIME...MOT...LOC 2330Z 325DEG 15KT 4647 10149
$$
CJSThe office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 9:51 AM MDT | Special Weather Statement | BIS | Oliver | 24 min |
| Aug 30, 9:54 AM MDT | Severe Thunderstorm Warning | BIS | Oliver | 36 min |
| Aug 30, 10:28 AM MDT | Severe Thunderstorm Warning | BIS | Oliver | 47 min |
| Aug 30, 10:33 AM MDT | Areal Flood Advisory | BIS | Oliver | 3 hr |
| Aug 30, 10:46 AM MDT | Flash Flood Warning | BIS | Oliver | 3 hr |
| Aug 30, 11:13 AM MDT | Severe Thunderstorm Warning | BIS | Morton, Oliver | 47 min |
| Aug 30, 11:58 AM MDT | Severe Thunderstorm Warning | BIS | Morton, Oliver | 47 min |
| Aug 30, 12:02 PM MDT | Severe Thunderstorm Warning | BIS | Mercer, Oliver | 43 min |
| Aug 30, 12:42 PM MDT | Severe Thunderstorm Warning | BIS | Morton, Oliver | 63 min |
| Aug 30, 12:44 PM MDT | Severe Thunderstorm Warning | BIS | Mercer, Oliver | 61 min |
| Aug 30, 1:17 PM MDT | Severe Thunderstorm Warning | BIS | Morton | 58 min |
| Aug 30, 2:15 PM MDT | Severe Thunderstorm Warning | BIS | Morton | 60 min |
| Aug 30, 2:48 PM MDT | Severe Thunderstorm Warning | BIS | McLean | 42 min |
| Aug 30, 3:16 PM MDT | Severe Thunderstorm Warning | BIS | Morton | 59 min |
| Aug 30, 3:32 PM MDT | Severe Thunderstorm Warning | BIS | Hettinger | 58 min |
| Aug 30, 3:43 PM MDT | Severe Thunderstorm Warning | BIS | Grant, Morton | 47 min |
| Aug 30, 3:46 PM MDT | Areal Flood Advisory | BIS | Morton | 3 hr |
| Aug 30, 4:00 PM MDT | Severe Thunderstorm Warning | BIS | Grant, Morton | 60 min |
| Aug 30, 4:28 PM MDT | Severe Thunderstorm Warning | BIS | Mercer, Oliver | 47 min |
| Aug 30, 4:29 PM MDT | Severe Thunderstorm Warning | BIS | Adams, Hettinger | 61 min |
| Aug 30, 4:43 PM MDT | Severe Thunderstorm Warning | BIS | McLean, Mercer | 47 min |
| Aug 30, 5:02 PM MDT | Severe Thunderstorm Warning | BIS | Grant, Morton, Sioux | 58 min |
| Aug 30, 5:30 PM MDT | Severe Thunderstorm Warning | BIS | Adams | 60 min |
| Aug 30, 5:49 PM MDT | Severe Thunderstorm Warning | BIS | Emmons, Grant, Morton, Sioux | 35 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.