Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 134, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Aug 23, 2021, 11:14 PM MDT for Grant County, Morton County, North Dakota. It was in force for 46 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 23, 2021, 11:14 PM MDT (05:14 UTC)
- Expired
- Aug 24, 2021, 12:00 AM MDT
- In force
- 46 min
- Issued by
- NWS Bismarck, ND
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 50.0 mph
Counties Grant County, ND, Morton County, ND
The radar
The Bismarck radar (KBIS), 73 km from the middle of the area, began a volume at 05:14 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 nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 5.2 hours before the alert went out and 76 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
- 16 J/kg
- Mixed-layer CIN
- -172 J/kg
- Mixed-layer LCL
- 2391 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 180 m²/s²
- 0-3 km storm-relative helicity
- 508 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
583 WUUS53 KBIS 240514 SVRBIS NDC037-059-240600- /O.NEW.KBIS.SV.W.0134.210824T0514Z-210824T0600Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Bismarck ND 1214 AM CDT Tue Aug 24 2021 The National Weather Service in Bismarck has issued a * Severe Thunderstorm Warning for... South central Morton County in south central North Dakota... Central Grant County in south central North Dakota... * Until 100 AM CDT/midnight MDT/. * At 1214 AM CDT/1114 PM MDT/, a severe thunderstorm was located 10 miles southeast of Carson, or 19 miles southeast of Elgin, moving northeast at 20 mph. HAZARD...Half dollar size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * This severe thunderstorm will be near... Flasher around 100 AM CDT. Other locations impacted by this severe thunderstorm include St. Gertrude, Raleigh and Leith. PRECAUTIONARY/PREPAREDNESS ACTIONS... This storm is producing large hail. SEEK SHELTER NOW inside a sturdy structure and stay away from windows! && LAT...LON 4616 10145 4625 10168 4645 10159 4644 10092 TIME...MOT...LOC 0514Z 222DEG 19KT 4628 10148 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.25 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...<50 MPH $$ HOLLAN
3 follow-up statements
643 WWUS53 KBIS 240529 SVSBIS Severe Weather Statement National Weather Service Bismarck ND 1229 AM CDT Tue Aug 24 2021 NDC037-059-240600- /O.CON.KBIS.SV.W.0134.000000T0000Z-210824T0600Z/ Morton ND-Grant ND- 1229 AM CDT Tue Aug 24 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 AM CDT/MIDNIGHT MDT/ FOR SOUTH CENTRAL MORTON AND EAST CENTRAL GRANT COUNTIES... At 1228 AM CDT/1128 PM MDT/, a severe thunderstorm was located 9 miles southeast of Carson, or 21 miles east of Elgin, moving northeast at 20 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. This severe storm will be near... Flasher around 100 AM CDT. Other locations impacted by this severe thunderstorm include St. Gertrude, Raleigh, and Leith. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4622 10133 4632 10165 4645 10159 4644 10092 TIME...MOT...LOC 0528Z 222DEG 19KT 4634 10140 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...<50 MPH $$ HOLLAN
976 WWUS53 KBIS 240547 SVSBIS Severe Weather Statement National Weather Service Bismarck ND 1247 AM CDT Tue Aug 24 2021 NDC037-059-240600- /O.CON.KBIS.SV.W.0134.000000T0000Z-210824T0600Z/ Morton ND-Grant ND- 1247 AM CDT Tue Aug 24 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 AM CDT/MIDNIGHT MDT/ FOR SOUTH CENTRAL MORTON AND EAST CENTRAL GRANT COUNTIES... At 1247 AM CDT/1147 PM MDT/, severe thunderstorms were located along a line extending from near Carson to 8 miles southeast of Flasher, moving northeast at 20 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. These severe thunderstorms will remain over mainly rural areas of south central Morton and east central Grant Counties, including the following locations... Raleigh. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4631 10117 4639 10162 4645 10159 4644 10092 TIME...MOT...LOC 0547Z 220DEG 20KT 4645 10153 4638 10110 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...<50 MPH $$ HOLLAN
808
WWUS53 KBIS 240558
SVSBIS
Severe Weather Statement
National Weather Service Bismarck ND
1258 AM CDT Tue Aug 24 2021
NDC037-059-240608-
/O.EXP.KBIS.SV.W.0134.000000T0000Z-210824T0600Z/
Morton ND-Grant ND-
1258 AM CDT Tue Aug 24 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL MORTON AND EAST
CENTRAL GRANT COUNTIES WILL EXPIRE AT 100 AM CDT/MIDNIGHT MDT/...
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning will
be allowed to expire.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Bismarck.
LAT...LON 4631 10117 4639 10162 4645 10159 4644 10092
TIME...MOT...LOC 0558Z 222DEG 19KT 4649 10147 4642 10104
$$
HOLLANThe office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 8:53 PM MDT | Special Weather Statement | BIS | Sioux | 37 min |
| Aug 23, 9:06 PM MDT | Severe Thunderstorm Warning | BIS | Sioux | 24 min |
| Aug 23, 10:38 PM MDT | Special Weather Statement | BIS | Logan, McIntosh | 37 min |
| Aug 23, 11:01 PM MDT | Special Weather Statement | BIS | Grant | 29 min |
| Aug 23, 11:23 PM MDT | Special Weather Statement | BIS | Dickey, LaMoure | 37 min |
| Aug 23, 11:45 PM MDT | Severe Thunderstorm Warning | BIS | Dickey | 30 min |
| Aug 24, 12:03 AM MDT | Special Weather Statement | BIS | Emmons | 27 min |
| Aug 24, 1:01 AM MDT | Special Weather Statement | BIS | Logan | 29 min |
| Aug 24, 1:57 AM MDT | Areal Flood Advisory | BIS | Logan | 98 min |
| Aug 24, 4:54 AM MDT | Special Weather Statement | BIS | Mountrail | 36 min |
| Aug 24, 5:16 AM MDT | Severe Thunderstorm Warning | BIS | McLean, Mountrail, Ward | 29 min |
| Aug 24, 6:26 AM MDT | Special Weather Statement | BIS | Pierce | 34 min |
| Aug 24, 7:19 AM MDT | Special Weather Statement | BIS | McHenry | 26 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.