Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 164, NWS Bismarck, ND

August 30, 2021Adams County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Aug 30, 2021, 5:30 PM MDT for Adams County, North Dakota. It was in force for 60 min. 3 reports 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, 5:30 PM MDT (23:30 UTC)
Expired
Aug 30, 2021, 6:30 PM MDT
In force
60 min
Issued by
NWS Bismarck, ND
Area
Storm-based polygon
Damage threat
Considerable
Hail
2.5 in
Wind
60.0 mph

County Adams County, ND

The radar

The Bismarck radar (KBIS), 150 km from the middle of the area, began a volume at 23:30 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

TimeReportWhereRemark
Aug 30, 5:50 PM MDTHAIL 38 N Haynes, NDREPORT FROM AUGUST 30TH STORM. NOT MUCH WIND, BUT LARGE HAIL PUNCHED MANY HOLES THROUGH THE METAL ROOFS ON POLE BARNS. FIVE VEHICLES WERE SUBSTANTIALLY DAMAGED. HAIL HIT HARD ENOUGH TO CLEAN SPOTS OFF ON CONCRETE DRIVEWAY APRON. BIRDBATH WAS BROKEN UP, AND HOL
Aug 30, 6:15 PM MDTTSTM WND DMG3 Ese Haynes, NDREPORT FROM AUGUST 30TH STORM. WIND DRIVEN HAIL NEAR THE HIDDENWOOD HUNT TEEPEE SITE SHREDDED A VERY NICE LOOKING FIELD OF EIGHT FOOT HIGH CORN DOWN TO KNEE HIGH.
Aug 30, 6:15 PM MDTHAIL 2.75Haynes, NDHAIL RANGING IN SIZE FROM MARBLE TO BASEBALL FELL FROM 600 TO 615 PM MDT. REPORT RELAYED BY EMERGENCY MANAGEMENT.

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.

IssuedProductOfficeLasted
Aug 30, 12:38 PM MDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 11.5 hours before the alert went out and 154 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-pSkew-T log-p diagram, Bismarck Municip, ND at 12:00Z on 2021-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 8 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 12:00Z on 2021-08-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
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

Open this sounding in Storm Lab

The text

As transmitted.

903 
WUUS53 KBIS 302330
SVRBIS
NDC001-310030-
/O.NEW.KBIS.SV.W.0164.210830T2330Z-210831T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Bismarck ND
530 PM MDT Mon Aug 30 2021

The National Weather Service in Bismarck has issued a

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

* Until 630 PM MDT.

* At 529 PM MDT, a severe thunderstorm was located 8 miles north of
  Haynes, or 10 miles northeast of Hettinger, moving south at 15 mph.

  HAZARD...Tennis 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...
  Haynes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows!

&&

LAT...LON 4595 10280 4620 10273 4620 10211 4599 10200
      4595 10200
TIME...MOT...LOC 2329Z 339DEG 14KT 4609 10245 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CJS
3 follow-up statements
555 
WWUS53 KBIS 302352
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
552 PM MDT Mon Aug 30 2021

NDC001-310030-
/O.CON.KBIS.SV.W.0164.000000T0000Z-210831T0030Z/
Adams ND-
552 PM MDT Mon Aug 30 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM MDT
FOR ADAMS COUNTY...

At 551 PM MDT, a severe thunderstorm was located 5 miles northeast of
Haynes, or 10 miles east of Hettinger, moving south at 10 mph.

HAZARD...Tennis 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...
Hettinger and Haynes. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.

&&

LAT...LON 4595 10280 4620 10273 4620 10211 4599 10200
      4595 10200
TIME...MOT...LOC 2351Z 340DEG 10KT 4604 10243 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CJS
034 
WWUS53 KBIS 310010
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
610 PM MDT Mon Aug 30 2021

NDC001-310030-
/O.CON.KBIS.SV.W.0164.000000T0000Z-210831T0030Z/
Adams ND-
610 PM MDT Mon Aug 30 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM MDT
FOR ADAMS COUNTY...

At 610 PM MDT, a severe thunderstorm was located over White Butte, or
11 miles west of Lemmon, moving south at 15 mph.

HAZARD...Tennis 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...
Haynes. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.

&&

LAT...LON 4595 10280 4620 10273 4620 10211 4599 10200
      4595 10200
TIME...MOT...LOC 0010Z 339DEG 14KT 4597 10239 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CJS
658 
WWUS53 KBIS 310031
SVSBIS

Severe Weather Statement
National Weather Service Bismarck ND
631 PM MDT Mon Aug 30 2021

NDC001-310041-
/O.EXP.KBIS.SV.W.0164.000000T0000Z-210831T0030Z/
Adams ND-
631 PM MDT Mon Aug 30 2021

...THE SEVERE THUNDERSTORM WARNING FOR ADAMS COUNTY HAS EXPIRED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been allowed to expire.

A Severe Thunderstorm Watch remains in effect until 1100 PM MDT for
southwestern North Dakota.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Bismarck.

LAT...LON 4595 10280 4620 10273 4620 10211 4599 10200
      4595 10200
TIME...MOT...LOC 0031Z 339DEG 14KT 4590 10235 

$$

CJS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 30, 9:51 AM MDTSpecial Weather StatementBISOliver24 min
Aug 30, 9:54 AM MDTSevere Thunderstorm WarningBISOliver36 min
Aug 30, 10:28 AM MDTSevere Thunderstorm Warning Considerable damage threatBISOliver47 min
Aug 30, 10:33 AM MDTAreal Flood AdvisoryBISOliver3 hr
Aug 30, 10:46 AM MDTFlash Flood WarningBISOliver3 hr
Aug 30, 11:13 AM MDTSevere Thunderstorm WarningBISMorton, Oliver47 min
Aug 30, 11:58 AM MDTSevere Thunderstorm WarningBISMorton, Oliver47 min
Aug 30, 12:02 PM MDTSevere Thunderstorm WarningBISMercer, Oliver43 min
Aug 30, 12:42 PM MDTSevere Thunderstorm Warning Considerable damage threatBISMorton, Oliver63 min
Aug 30, 12:44 PM MDTSevere Thunderstorm WarningBISMercer, Oliver61 min
Aug 30, 1:17 PM MDTSevere Thunderstorm Warning Destructive damage threatBISMorton58 min
Aug 30, 2:15 PM MDTSevere Thunderstorm Warning Considerable damage threatBISMorton60 min
Aug 30, 2:48 PM MDTSevere Thunderstorm WarningBISMcLean42 min
Aug 30, 3:16 PM MDTSevere Thunderstorm Warning Considerable damage threatBISMorton59 min
Aug 30, 3:32 PM MDTSevere Thunderstorm WarningBISHettinger58 min
Aug 30, 3:43 PM MDTSevere Thunderstorm WarningBISGrant, Morton47 min
Aug 30, 3:46 PM MDTAreal Flood AdvisoryBISMorton3 hr
Aug 30, 4:00 PM MDTSevere Thunderstorm Warning Considerable damage threatBISGrant, Morton60 min
Aug 30, 4:28 PM MDTSevere Thunderstorm WarningBISMercer, Oliver47 min
Aug 30, 4:29 PM MDTSevere Thunderstorm Warning Destructive damage threatBISAdams, Hettinger61 min
Aug 30, 4:43 PM MDTSevere Thunderstorm WarningBISMcLean, Mercer47 min
Aug 30, 4:54 PM MDTSevere Thunderstorm WarningBISGrant, Morton38 min
Aug 30, 5:02 PM MDTSevere Thunderstorm Warning Destructive damage threatBISGrant, Morton, Sioux58 min
Aug 30, 5:49 PM MDTSevere Thunderstorm WarningBISEmmons, Grant, Morton, Sioux35 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.