Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 137, NWS Bismarck, ND

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

NWS Bismarck, ND issued this severe thunderstorm warning at Aug 26, 2021, 1:18 AM MDT for Adams County, Bowman County, North Dakota. It was in force for 27 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 26, 2021, 1:18 AM MDT (07:18 UTC)
Expired: Aug 26, 2021, 1:45 AM MDT
In force: 27 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Adams County, ND, Bowman County, ND

The radar

The Bismarck radar (KBIS), 191 km from the middle of the area, began a volume at 07:19 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, 7.3 hours before the alert went out and 195 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.

301 
WUUS53 KBIS 260718
SVRBIS
NDC001-011-260745-
/O.NEW.KBIS.SV.W.0137.210826T0718Z-210826T0745Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
118 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...
  Southwestern Adams County in southwestern North Dakota...

* Until 145 AM MDT.

* At 117 AM MDT, a severe thunderstorm was located 9 miles southwest
  of Reeder, or 19 miles west of Hettinger, 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...
  Reeder, Bucyrus and Gascoyne. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4594 10314 4599 10321 4622 10301 4609 10261
      4594 10289
TIME...MOT...LOC 0717Z 224DEG 29KT 4599 10304 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

GALE

1 follow-up statement

025 
WWUS53 KBIS 260731
SVSBIS

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

NDC001-011-260745-
/O.CON.KBIS.SV.W.0137.000000T0000Z-210826T0745Z/
Bowman ND-Adams ND-
131 AM MDT Thu Aug 26 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 AM MDT
FOR SOUTHEASTERN BOWMAN AND SOUTHWESTERN ADAMS COUNTIES...

At 130 AM MDT, a severe thunderstorm was located near Reeder, or 15
miles west of Hettinger, moving northeast at 30 mph.

HAZARD...Golf 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...
Reeder, Bucyrus and Gascoyne. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.

&&

LAT...LON 4622 10301 4609 10261 4594 10289 4594 10314
      4599 10321
TIME...MOT...LOC 0730Z 223DEG 28KT 4605 10295 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

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, 1:43 AM MDT	Severe Thunderstorm Warning	BIS	Adams, Bowman	32 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.