Alert archive / North Dakota / Special Weather Statements in 2021

Special Weather Statement, NWS Bismarck, ND

May 22, 2021Morton County, North Dakota

NWS Bismarck, ND issued this special weather statement at May 22, 2021, 12:57 AM CDT for Morton County, North Dakota. It was in force for 18 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: May 22, 2021, 12:57 AM CDT (05:57 UTC)
Expired: May 22, 2021, 1:15 AM CDT
In force: 18 min
Issued by: NWS Bismarck, ND

County Morton County, ND

The radar

The Bismarck radar (KBIS), 86 km from the middle of the area, began a volume at 05:59 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, 6.0 hours before the alert went out and 91 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: 608 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 129 m²/s²
0-3 km storm-relative helicity: 296 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at May 21, 9:38 PM CDT, 3 hours 19 minutes earlier.

Area forecast discussion, May 21, 9:38 PM CDT, 3 hours 19 minutes before

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Hazardous weather outlook, May 22, 12:50 AM CDT, 7 minutes before

Hazardous Weather Outlook
National Weather Service Bismarck ND
1250 AM CDT Sat May 22 2021

NDZ001>005-009>013-017>023-025-031>037-040>048-050-051-230600-
Divide-Burke-Renville-Bottineau-Rolette-Williams-Mountrail-Ward-
McHenry-Pierce-McKenzie-Dunn-Mercer-Oliver-McLean-Sheridan-Wells-
Foster-Golden Valley-Billings-Stark-Morton-Burleigh-Kidder-
Stutsman-Slope-Hettinger-Grant-Bowman-Adams-Sioux-Emmons-Logan-
La Moure-McIntosh-Dickey-
1250 AM CDT Sat May 22 2021 /1150 PM MDT Fri May 21 2021/

This Hazardous Weather Outlook is for portions of north central
North Dakota, northwest North Dakota, south central North Dakota,
southeast North Dakota, and southwest North Dakota.

.DAY ONE...Tonight

Isolated to scattered thunderstorms tonight. Some of the stronger
storms will be capable of producing hail up to the size of pennies and
wind gusts as high as 40 mph.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

There is a chance of thunderstorms Saturday through Sunday
night. Some of the storms on Sunday afternoon into Sunday night
could be strong to severe. The greatest chance of severe weather
looks to be in the area along and south of Interstate 94 and
along and west of U.S. Highway 83, over southwest North Dakota.

.SPOTTER INFORMATION STATEMENT...

Spotter are encouraged to report any hail and strong winds gusts
or damage from winds. By phone call 701-223-4582. Post to NWS social
media sites, or use the reporting form on our web page.

In the hours before

Local storm report, May 21, 7:40 PM CDT, 5 hours 17 minutes before

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Local storm report, May 21, 10:38 PM CDT, 2 hours 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
1038 PM CDT FRI MAY 21 2021

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

1030 PM     HEAVY RAIN       6 SW ORRIN              48.02N 100.24W
05/21/2021  M1.21 INCH       MCHENRY            ND   CO-OP OBSERVER

            TOTAL PRECIPITATION FOR 24 HOURS ENDING AT
            10PM.

&&

RK

Special weather statement, May 22, 12:23 AM CDT, 34 minutes before

Special Weather Statement
National Weather Service Bismarck ND
1223 AM CDT Sat May 22 2021

NDZ034-041-042-220600-
Grant ND-Hettinger ND-Morton ND-
1223 AM CDT Sat May 22 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN HETTINGER...WEST
CENTRAL MORTON AND NORTHWESTERN GRANT COUNTIES UNTIL 100 AM
CDT/MIDNIGHT MDT/...

At 1222 AM CDT/1122 PM MDT/, a strong thunderstorm was located 11
miles west of Heart Butte Dam, or 15 miles northwest of Elgin, moving
north at 25 mph.

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

Locations impacted include...
Glen Ullin.

Very heavy rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek shelter
inside a building or vehicle.

&&

LAT...LON 4654 10214 4663 10213 4663 10210 4682 10210
      4688 10209 4679 10167 4650 10201
TIME...MOT...LOC 0522Z 196DEG 23KT 4658 10206

ANGLIN

Special weather statement, May 22, 12:57 AM CDT, 0 minutes before

Special Weather Statement
National Weather Service Bismarck ND
1257 AM CDT Sat May 22 2021

NDZ034-220615-
Morton ND-
1257 AM CDT Sat May 22 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN MORTON COUNTY UNTIL
115 AM CDT...

At 1257 AM CDT, a strong thunderstorm was located over Glen Ullin,
moving northeast at 40 mph.

Half inch hail and wind gusts to 40 mph will be possible with this
storm.

Locations impacted include...
Glen Ullin.

Very heavy rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek shelter
inside a building or vehicle.

&&

LAT...LON 4676 10205 4698 10190 4698 10152 4672 10185
      4672 10198
TIME...MOT...LOC 0557Z 210DEG 35KT 4679 10188

ANGLIN

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 12:23 AM CDT	Special Weather Statement	BIS	Grant	37 min
May 22, 1:22 AM CDT	Special Weather Statement	BIS	Emmons	23 min
May 22, 1:43 AM CDT	Special Weather Statement	BIS	Emmons	32 min
May 22, 2:43 AM CDT	Special Weather Statement	BIS	Logan	32 min
May 22, 2:57 AM CDT	Special Weather Statement	BIS	Emmons	18 min
May 22, 3:12 AM CDT	Special Weather Statement	BIS	Logan	33 min
May 22, 3:16 AM CDT	Special Weather Statement	BIS	Logan	29 min
May 22, 4:01 AM CDT	Special Weather Statement	BIS	Stutsman	29 min

Nearby

Special Weather Statements in North Dakota, 2021 Every special weather statement 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.