Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 128, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Aug 9, 2021, 7:51 PM CDT for LaMoure County, Stutsman County, North Dakota. It was in force for 24 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 9, 2021, 7:51 PM CDT (00:51 UTC)
- Expired
- Aug 9, 2021, 8:15 PM CDT
- In force
- 24 min
- Issued by
- NWS Bismarck, ND
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
Counties LaMoure County, ND, Stutsman County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 130 km from the middle of the area, began a volume at 00:55 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 9, 7:53 PM CDT | HAIL 1 | 2 Nnw Adrian, ND |
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 9, 4:01 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 0.9 hours before the alert went out and 173 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
- 296 J/kg
- Mixed-layer CIN
- -462 J/kg
- Mixed-layer LCL
- 1238 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- -40 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
225
WUUS53 KBIS 100051
SVRBIS
NDC045-093-100115-
/O.NEW.KBIS.SV.W.0128.210810T0051Z-210810T0115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
751 PM CDT Mon Aug 9 2021
The National Weather Service in Bismarck has issued a
* Severe Thunderstorm Warning for...
North central LaMoure County in southeastern North Dakota...
Southeastern Stutsman County in southeastern North Dakota...
* Until 815 PM CDT.
* At 750 PM CDT, a severe thunderstorm was located over Adrian, or 20
miles northeast of Edgeley, moving northeast at 35 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.
* Locations impacted include...
Marion and Adrian.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4660 9828 4655 9862 4663 9873 4675 9845
4674 9844 4663 9844 4663 9832
TIME...MOT...LOC 0050Z 244DEG 29KT 4662 9851
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
GALE2 follow-up statements
619
WWUS53 KBIS 100059
SVSBIS
Severe Weather Statement
National Weather Service Bismarck ND
759 PM CDT Mon Aug 9 2021
NDC045-093-100115-
/O.CON.KBIS.SV.W.0128.000000T0000Z-210810T0115Z/
LaMoure ND-Stutsman ND-
759 PM CDT Mon Aug 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR NORTH CENTRAL LAMOURE AND SOUTHEASTERN STUTSMAN COUNTIES...
At 759 PM CDT, a severe thunderstorm was located near Adrian, or 20
miles southeast of Jamestown, moving northeast at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Marion and Adrian.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4656 9853 4666 9865 4675 9845 4674 9844
4663 9844 4663 9832 4660 9828
TIME...MOT...LOC 0059Z 237DEG 24KT 4665 9849
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
GALE140
WWUS53 KBIS 100116
SVSBIS
Severe Weather Statement
National Weather Service Bismarck ND
816 PM CDT Mon Aug 9 2021
NDC045-093-100125-
/O.EXP.KBIS.SV.W.0128.000000T0000Z-210810T0115Z/
LaMoure ND-Stutsman ND-
816 PM CDT Mon Aug 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL LAMOURE AND
SOUTHEASTERN STUTSMAN COUNTIES HAS EXPIRED...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been allowed to expire.
A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
southeastern North Dakota.
LAT...LON 4656 9853 4666 9865 4675 9845 4674 9844
4663 9844 4663 9832 4660 9828
TIME...MOT...LOC 0115Z 244DEG 29KT 4670 9834
$$
GALEThe office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 7:27 PM CDT | Severe Thunderstorm Warning | BIS | Foster | 48 min |
| Aug 9, 7:35 PM CDT | Special Weather Statement | BIS | LaMoure | 25 min |
| Aug 9, 8:14 PM CDT | Severe Thunderstorm Warning | BIS | Foster | 31 min |
| Aug 10, 4:02 AM CDT | Red Flag Warning | BIS | Adams, Billings, Bowman, Emmons, Golden Valley, Grant and 4 more | 17 hr |
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.