Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 135, NWS Bismarck, ND

August 24, 2021Dickey County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Aug 24, 2021, 12:45 AM CDT for Dickey County, North Dakota. It was in force for 30 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 24, 2021, 12:45 AM CDT (05:45 UTC)
Expired: Aug 24, 2021, 1:15 AM CDT
In force: 30 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Damage threat: Considerable
Hail: 0.75 in
Wind: 70.0 mph

County Dickey County, ND

What was reported inside it

Time	Report	Where	Remark
Aug 24, 1:02 AM CDT	TSTM WND GST 97	Oakes, ND	PERSONAL WEATHER STATION IN OAKES MEASURED 70 MPH SUSTAINED WIND GUSTING TO 97 MPH.

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 23, 10:11 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 5.8 hours before the alert went out and 135 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: 142 J/kg
Mixed-layer CIN: -222 J/kg
Mixed-layer LCL: 2124 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 173 m²/s²
0-3 km storm-relative helicity: 342 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

As transmitted.

788 
WUUS53 KBIS 240545
SVRBIS
NDC021-240615-
/O.NEW.KBIS.SV.W.0135.210824T0545Z-210824T0615Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
1245 AM CDT Tue Aug 24 2021

The National Weather Service in Bismarck has issued a

* Severe Thunderstorm Warning for...
  Dickey County in southeastern North Dakota...

* Until 115 AM CDT.

* At 1244 AM CDT, severe thunderstorms were located along a line
  extending from 6 miles southeast of Lamoure to 4 miles west of
  Oakes to 6 miles northwest of Hecla, moving east at 45 mph.

  HAZARD...70 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings.

* Severe thunderstorms will be near...
  Oakes around 1250 AM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with these storms. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 4594 9873 4611 9878 4627 9869 4629 9857
      4628 9801 4594 9801
TIME...MOT...LOC 0544Z 267DEG 39KT 4628 9820 4612 9818 4593 9827 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

HARGROVE

2 follow-up statements

923 
WWUS53 KBIS 240556
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
1256 AM CDT Tue Aug 24 2021

NDC021-240615-
/O.CON.KBIS.SV.W.0135.000000T0000Z-210824T0615Z/
Dickey ND-
1256 AM CDT Tue Aug 24 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM CDT
FOR EASTERN DICKEY COUNTY...

At 1256 AM CDT, severe thunderstorms were located along a line
extending from 5 miles south of Verona to near Oakes to near Hecla,
moving east at 45 mph.

HAZARD...70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

These severe thunderstorms will remain over mainly rural areas of
eastern Dickey County, including the following locations... Guelph
and Glover.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 4595 9845 4611 9851 4629 9845 4628 9801
      4594 9801
TIME...MOT...LOC 0556Z 267DEG 39KT 4629 9805 4613 9803 4594 9812 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

HARGROVE

215 
WWUS53 KBIS 240615
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
115 AM CDT Tue Aug 24 2021

NDC021-240625-
/O.EXP.KBIS.SV.W.0135.000000T0000Z-210824T0615Z/
Dickey ND-
115 AM CDT Tue Aug 24 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN DICKEY COUNTY HAS
EXPIRED...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been allowed to expire.  However gusty
winds are still possible with these thunderstorms.

A Severe Thunderstorm Watch remains in effect until 300 AM CDT for
southeastern North Dakota.

LAT...LON 4595 9845 4611 9851 4629 9845 4628 9801
      4594 9801
TIME...MOT...LOC 0615Z 267DEG 39KT 4630 9780 4614 9778 4595 9788 

$$

HARGROVE

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 23, 9:53 PM CDT	Special Weather Statement	BIS	Sioux	37 min
Aug 23, 10:06 PM CDT	Severe Thunderstorm Warning	BIS	Sioux	24 min
Aug 23, 11:38 PM CDT	Special Weather Statement	BIS	Logan, McIntosh	37 min
Aug 24, 12:01 AM CDT	Special Weather Statement	BIS	Grant	29 min
Aug 24, 12:14 AM CDT	Severe Thunderstorm Warning	BIS	Grant, Morton	46 min
Aug 24, 12:23 AM CDT	Special Weather Statement	BIS	Dickey, LaMoure	37 min
Aug 24, 1:03 AM CDT	Special Weather Statement	BIS	Emmons	27 min
Aug 24, 2:01 AM CDT	Special Weather Statement	BIS	Logan	29 min
Aug 24, 2:57 AM CDT	Areal Flood Advisory	BIS	Logan	98 min
Aug 24, 5:54 AM CDT	Special Weather Statement	BIS	Mountrail	36 min
Aug 24, 6:16 AM CDT	Severe Thunderstorm Warning	BIS	McLean, Mountrail, Ward	29 min
Aug 24, 7:26 AM CDT	Special Weather Statement	BIS	Pierce	34 min
Aug 24, 8:19 AM CDT	Special Weather Statement	BIS	McHenry	26 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.