Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 156, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Aug 30, 2021, 3:32 PM MDT for Hettinger County, North Dakota. It was in force for 58 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
- Aug 30, 2021, 3:32 PM MDT (21:32 UTC)
- Expired
- Aug 30, 2021, 4:30 PM MDT
- In force
- 58 min
- Issued by
- NWS Bismarck, ND
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
County Hettinger County, ND
The radar
The Bismarck radar (KBIS), 139 km from the middle of the area, began a volume at 21:35 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 |
|---|---|---|---|
| Aug 30, 4:11 PM MDT | HAIL 2.75 | 4 Nne Regent, ND | HAIL ONGOING FOR 15 MINUTES AT THE TIME OF THE CALL. NO WIND. 0.60 INCHES OF RAIN. |
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 |
|---|---|---|---|
| Aug 30, 12:38 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 9.5 hours before the alert went out and 143 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.
069
WUUS53 KBIS 302132
SVRBIS
NDC041-302230-
/O.NEW.KBIS.SV.W.0156.210830T2132Z-210830T2230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
332 PM MDT Mon Aug 30 2021
The National Weather Service in Bismarck has issued a
* Severe Thunderstorm Warning for...
Central Hettinger County in southwestern North Dakota...
* Until 430 PM MDT.
* At 332 PM MDT, a severe thunderstorm was located 5 miles north of
Regent, or 12 miles northwest of Mott, moving southeast at 10 mph.
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.
* This severe thunderstorm will be near...
Regent around 350 PM MDT.
Other locations in the path of this severe thunderstorm include Mott.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4628 10262 4652 10271 4663 10245 4640 10208
4628 10246
TIME...MOT...LOC 2132Z 323DEG 9KT 4650 10251
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
CJS2 follow-up statements
592
WWUS53 KBIS 302155
SVSBIS
Severe Weather Statement
National Weather Service Bismarck ND
355 PM MDT Mon Aug 30 2021
NDC041-302230-
/O.CON.KBIS.SV.W.0156.000000T0000Z-210830T2230Z/
Hettinger ND-
355 PM MDT Mon Aug 30 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM MDT
FOR CENTRAL HETTINGER COUNTY...
At 355 PM MDT, a severe thunderstorm was located 5 miles northeast of
Regent, or 8 miles northwest of Mott, moving southeast at 10 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Mott.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4628 10262 4650 10270 4663 10245 4640 10208
4628 10246
TIME...MOT...LOC 2155Z 323DEG 9KT 4645 10246
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
CJS114
WWUS53 KBIS 302211
SVSBIS
Severe Weather Statement
National Weather Service Bismarck ND
411 PM MDT Mon Aug 30 2021
NDC041-302230-
/O.CON.KBIS.SV.W.0156.000000T0000Z-210830T2230Z/
Hettinger ND-
411 PM MDT Mon Aug 30 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM MDT
FOR CENTRAL HETTINGER COUNTY...
At 411 PM MDT, a severe thunderstorm was located near Regent, or 6
miles west of Mott, moving southeast at 15 mph.
THIS IS A DESTRUCTIVE STORM FOR THE REGENT AND MOTT AREAS.
HAZARD...Baseball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be severely injured.
Expect shattered windows, extensive damage to roofs,
siding, and vehicles.
Locations impacted include...
Mott and Regent.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
This is a dangerous storm. Prepare immediately for large destructive
hail capable of producing significant damage. People outside should
move to a shelter, inside a strong building and away from windows.
&&
LAT...LON 4628 10262 4650 10270 4663 10245 4640 10208
4628 10246
TIME...MOT...LOC 2211Z 320DEG 11KT 4640 10246
THUNDERSTORM DAMAGE THREAT...DESTRUCTIVE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
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, 3:43 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, 4:54 PM MDT | Severe Thunderstorm Warning | BIS | Grant, Morton | 38 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.