Alert archive / North Dakota / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 278, NWS Bismarck, ND

August 23, 2020Stutsman County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Aug 23, 2020, 9:08 PM CDT for Stutsman County, North Dakota. It was in force for 67 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 23, 2020, 9:08 PM CDT (02:08 UTC)
Expired
Aug 23, 2020, 10:15 PM CDT
In force
67 min
Issued by
NWS Bismarck, ND
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

County Stutsman County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 138 km from the middle of the area, began a volume at 02:09 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, 2.1 hours before the alert went out and 134 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 00:00Z on 2020-08-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 2020-08-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2197 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
422 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Bismarck, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 23, 5:54 PM CDT, 3 hours 14 minutes earlier.

Area forecast discussion, Aug 23, 5:54 PM CDT, 3 hours 14 minutes before
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Hazardous weather outlook, Aug 23, 6:49 PM CDT, 2 hours 19 minutes before
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In the hours before

Local storm report, Aug 23, 5:34 PM CDT, 3 hours 34 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
534 PM CDT SUN AUG 23 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0500 PM     HAIL             3 W FORBES              45.95N 98.85W
08/23/2020  E1.50 INCH       DICKEY             ND   TRAINED SPOTTER

            THE LARGEST HAIL RANGED IN SIZE FROM QUARTER
            TO JUST UNDER GOLF BALL SIZE. EDGES OF THE
            HAIL WERE VERY JAGGED. HAIL LASTED FROM 500
            PM TO 505 PM. VERY LITTLE WIND WITH THE
            SEVERE STORM AND 0.25 INCHES OF RAIN TOTAL.
            THIS REPORT WAS FROM A NDARB OBSERVER.

&&

JP MARTIN
Local storm report, Aug 23, 5:44 PM CDT, 3 hours 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
544 PM CDT SUN AUG 23 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0541 PM     HAIL             4 S ELLENDALE           45.94N 98.53W
08/23/2020  E1.75 INCH       DICKEY             ND   EMERGENCY MNGR

            GOLF BALL SIZE HAIL FALLING AT TIME OF CALL.
            LOTS OF LIGHTNING.

&&
Local storm report, Aug 23, 6:07 PM CDT, 3 hours 1 minute before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
607 PM CDT SUN AUG 23 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0505 PM     HAIL             2 NNE FORBES            45.97N 98.77W
08/23/2020  M2.50 INCH       DICKEY             ND   TRAINED SPOTTER

            HAIL STARTED ABOUT 505 PM AND ENDED AROUND
            515 PM. THE LARGEST STONES WERE MEASURED AT
            2.50 INCHES DIAMETER. RAIN TOTAL WAS
            MEASURED 0.33 INCHES. VERY LITTLE WIND WITH
            THE STORM. THIS WAS AN NDARB OBSERVER
            REPORT.

&&

JP MARTIN
Special weather statement, Aug 23, 8:27 PM CDT, 41 minutes before
Special Weather Statement
National Weather Service Bismarck ND
827 PM CDT Sun Aug 23 2020

NDZ037-048-240200-
La Moure ND-Stutsman ND-
827 PM CDT Sun Aug 23 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL LAMOURE AND
SOUTHEASTERN STUTSMAN COUNTIES UNTIL 900 PM CDT...

At 826 PM CDT, a strong thunderstorm was located near Montpelier, or
19 miles southeast of Jamestown, moving northeast at 10 mph.

Nickel size hail will be possible with this storm.

Locations near the path of this storm include...
Adrian and Montpelier.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 4654 9856 4665 9867 4679 9844 4663 9844
      4663 9831
TIME...MOT...LOC 0126Z 242DEG 10KT 4666 9853

SCHILD
Local storm report, Aug 23, 8:34 PM CDT, 34 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
834 PM CDT SUN AUG 23 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0640 PM     HAIL             4 NNE GUELPH            46.08N 98.22W
08/23/2020  E1.00 INCH       DICKEY             ND   PUBLIC

&&
Special weather statement, Aug 23, 8:41 PM CDT, 27 minutes before
Special Weather Statement
National Weather Service Bismarck ND
841 PM CDT Sun Aug 23 2020

NDZ037-240200-
Stutsman ND-
841 PM CDT Sun Aug 23 2020

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL STUTSMAN COUNTY
UNTIL 900 PM CDT...

At 841 PM CDT, a strong thunderstorm was located near Spiritwood, or
10 miles northeast of Jamestown, moving east at 40 mph.

Nickel size hail and wind gusts to 40 mph will be possible with this
storm.

Locations impacted include...
Spiritwood Lake and Spiritwood.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 4694 9864 4707 9866 4709 9847 4698 9847
      4698 9844 4690 9844
TIME...MOT...LOC 0141Z 271DEG 35KT 4700 9853

SCHILD

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 23, 8:27 PM CDTSpecial Weather StatementBISLaMoure33 min
Aug 23, 8:41 PM CDTSpecial Weather StatementBISStutsman19 min
Aug 23, 8:58 PM CDTAreal Flood AdvisoryBISFoster, Wells6 hr
Aug 23, 9:14 PM CDTSevere Thunderstorm WarningBISBurleigh, Kidder61 min
Aug 23, 9:49 PM CDTSevere Thunderstorm WarningBISStutsman56 min
Aug 23, 10:04 PM CDTSevere Thunderstorm WarningBISKidder, Logan, Stutsman56 min
Aug 23, 11:11 PM CDTSevere Thunderstorm WarningBISEmmons, Kidder, Logan64 min
Aug 23, 11:47 PM CDTSpecial Weather StatementBISKidder, Stutsman43 min
Aug 24, 12:07 AM CDTSevere Thunderstorm WarningBISDickey34 min
Aug 24, 12:30 AM CDTSevere Thunderstorm WarningBISKidder45 min
Aug 24, 1:03 AM CDTSevere Thunderstorm WarningBISKidder, Stutsman42 min
Aug 24, 1:46 AM CDTSevere Thunderstorm WarningBISStutsman44 min
Aug 24, 1:50 AM CDTAreal Flood AdvisoryBISKidder, Stutsman9 hr
Aug 24, 1:55 AM CDTSevere Thunderstorm WarningBISStutsman50 min
Aug 24, 2:16 AM CDTSpecial Weather StatementBISLaMoure44 min
Aug 24, 2:48 AM CDTSpecial Weather StatementBISStutsman42 min
Aug 24, 3:15 AM CDTSpecial Weather StatementBISLaMoure30 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2020Every severe thunderstorm warning in 2020

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.