Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 138, NWS Bismarck, ND

August 26, 2021Adams County, Bowman County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Aug 26, 2021, 1:43 AM MDT for Adams County, Bowman County, North Dakota. It was in force for 32 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 26, 2021, 1:43 AM MDT (07:43 UTC)
Expired: Aug 26, 2021, 2:15 AM MDT
In force: 32 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Adams County, ND, Bowman County, ND

The radar

The Bismarck radar (KBIS), 186 km from the middle of the area, began a volume at 07:42 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 26, 2:06 AM MDT	TSTM WND GST 60	1 Nnw Hettinger, ND	ASOS STATION KHEI HETTINGER AIRPORT.

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, 7.7 hours before the alert went out and 191 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2183 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 281 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

763 
WUUS53 KBIS 260743
SVRBIS
NDC001-011-260815-
/O.NEW.KBIS.SV.W.0138.210826T0743Z-210826T0815Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
143 AM MDT Thu Aug 26 2021

The National Weather Service in Bismarck has issued a

* Severe Thunderstorm Warning for...
  Southeastern Bowman County in southwestern North Dakota...
  Western Adams County in southwestern North Dakota...

* Until 215 AM MDT.

* At 143 AM MDT, severe thunderstorms were located along a line
  extending from 9 miles northeast of Reeder to 9 miles northeast of
  Ludlow, moving east at 35 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...
  Hettinger, Scranton, Reeder, Bucyrus, Gascoyne and Bowman Haley
  Dam.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4594 10342 4628 10304 4628 10250 4595 10250
TIME...MOT...LOC 0743Z 252DEG 32KT 4618 10279 4589 10320 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

GALE

2 follow-up statements

813 
WWUS53 KBIS 260756
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
156 AM MDT Thu Aug 26 2021

NDC011-260806-
/O.CAN.KBIS.SV.W.0138.000000T0000Z-210826T0815Z/
Bowman ND-
156 AM MDT Thu Aug 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BOWMAN COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 4595 10300 4628 10300 4628 10250 4595 10250
TIME...MOT...LOC 0756Z 249DEG 36KT 4627 10261 4596 10296 

$$

NDC001-260815-
/O.CON.KBIS.SV.W.0138.000000T0000Z-210826T0815Z/
Adams ND-
156 AM MDT Thu Aug 26 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 AM MDT
FOR WESTERN ADAMS COUNTY...

At 156 AM MDT, severe thunderstorms were located along a line
extending from 10 miles south of Regent to 10 miles south of Reeder,
moving east at 40 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...
Hettinger, Reeder and Bucyrus. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4595 10300 4628 10300 4628 10250 4595 10250
TIME...MOT...LOC 0756Z 249DEG 36KT 4627 10261 4596 10296 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

GALE

267 
WWUS53 KBIS 260820
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
220 AM MDT Thu Aug 26 2021

NDC001-260829-
/O.EXP.KBIS.SV.W.0138.000000T0000Z-210826T0815Z/
Adams ND-
220 AM MDT Thu Aug 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN ADAMS COUNTY HAS
EXPIRED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been allowed to expire.  However gusty
winds are still possible with these thunderstorms.

LAT...LON 4595 10300 4628 10300 4628 10250 4595 10250
TIME...MOT...LOC 0819Z 252DEG 32KT 4632 10237 4601 10272 

$$

GALE

The office that day

Everything else NWS Bismarck, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 26, 12:58 AM MDT	Special Weather Statement	BIS	Bowman	32 min
Aug 26, 1:18 AM MDT	Severe Thunderstorm Warning	BIS	Adams, Bowman	27 min
Aug 26, 2:17 AM MDT	Special Weather Statement	BIS	Adams, Hettinger	43 min
Aug 26, 2:28 AM MDT	Severe Thunderstorm Warning	BIS	Adams	32 min
Aug 26, 2:52 AM MDT	Severe Thunderstorm Warning	BIS	Adams, Grant, Sioux	23 min
Aug 26, 12:40 PM MDT	Special Weather Statement	BIS	Dickey	20 min
Aug 26, 12:58 PM MDT	Special Weather Statement	BIS	LaMoure	32 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2021 Every 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.