Hail and Damaging Wind in North Dakota, July 11, 2023

Name: Hail and Damaging Wind in North Dakota, July 11, 2023
Start: 2023-07-11T17:26
End: 2023-07-11T18:21
Location: North Dakota

July 11, 2023 · NWS BIS · 4 events in 3 counties and zones

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 4

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS BIS wrote it up.

Thunderstorms developed over southwest and west-central North Dakota after skies cleared and instability increased in an atmosphere with elevated deep layer shear. Some of the storms became severe over southwest North Dakota. The strongest wind gust report of 66 mph occurred near Marmarth in Slope County, and the largest hail size report of 1.75 inches in diameter was near Rhame in Bowman County.

What forecasters said that day

The local office's own words before the first event, 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 the first event at Jul 11, 4:47 PM MST, 39 minutes earlier.

Area forecast discussion, Jul 11, 4:47 PM MST, 39 minutes before

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Hazardous weather outlook, Jul 11, 4:49 PM MST, 37 minutes before

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In the hours before

Local storm report, Jul 11, 11:40 AM MST, 5 hours 46 minutes before

Preliminary Local Storm Report
National Weather Service Bismarck ND
140 PM CDT Tue Jul 11 2023

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

0124 PM     Rain             2 ENE Grassy Butte      47.40N 103.21W
07/11/2023  M1.26 inch       McKenzie           ND   CO-OP Observer

&&

ALB

Local storm report, Jul 11, 12:37 PM MST, 4 hours 49 minutes before

Preliminary Local Storm Report
National Weather Service Bismarck ND
237 PM CDT Tue Jul 11 2023

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

0235 PM     Rain             14 NE Hebron            47.03N 101.83W
07/11/2023  M0.70 inch       Mercer             ND   Public

            Storm total. Relayed via broadcast media.

&&

ZH

Special weather statement, Jul 11, 3:25 PM MST, 2 hours 1 minute before

Special Weather Statement
National Weather Service Bismarck ND
525 PM CDT Tue Jul 11 2023

NDZ010-017-018-112300-
McKenzie ND-Mountrail ND-Dunn ND-
525 PM CDT Tue Jul 11 2023

...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF NORTHWESTERN DUNN,
NORTHEASTERN MCKENZIE AND SOUTH CENTRAL MOUNTRAIL COUNTIES THROUGH
600 PM CDT...

At 524 PM CDT, a strong thunderstorm was located 14 miles east of
Watford City, moving southeast at 35 mph.

HAZARD...Wind gusts to 50 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
  Mandaree.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
southwestern and northwestern North Dakota.

&&

LAT...LON 4775 10320 4799 10305 4787 10241 4751 10263
TIME...MOT...LOC 2224Z 293DEG 32KT 4783 10297

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

JONES

Special weather statement, Jul 11, 3:33 PM MST, 1 hour 53 minutes before

Special Weather Statement
National Weather Service Bismarck ND
533 PM CDT Tue Jul 11 2023

NDZ031-032-040-043-112345-
Golden Valley-Billings-Slope-Bowman-
Including the cities of Beach, Medora, Marmarth, and Bowman
433 PM MDT Tue Jul 11 2023

...SEVERE THUNDERSTORM RISK INCREASING ACROSS SOUTHWESTERN NORTH
DAKOTA...

Isolated strong to severe thunderstorms may develop in Bowman and
Slope Counties before 6 PM MDT. If these storms develop, they may
produce very large hail, damaging winds, and possibly a tornado.

Thunderstorms will move out of Montana and into southwestern North
Dakota beginning about 6 PM MDT. There is a risk of severe storms
producing very large hail to tennis ball size and wind gusts to
70 mph between 6 PM and 9 PM MDT in parts of Golden Valley,
Billings, Slope, and Bowman Counties. A Severe Thunderstorm Watch
is in effect for this area until 9 PM MDT this evening.

CJS

The radar

The Bismarck radar (KBIS), 247 km away, was scanning. The volume nearest the first event began at 00:24 UTC.

Open the radar archive at this moment

Event by event

3 hail, 1 thunderstorm wind. Local standard time, as filed.

Thunderstorm Wind, Slope

When: July 11, 5:26 PM MST to 5:28 PM MST
Where: Slope County, 2.28 mi NNW of Marmarth
Measured: 57 kt (66 mph) measured gust
Reported by: Mesonet
Coordinates: 46.330, -103.920

Hail, Bowman

When: July 11, 5:37 PM MST to 5:40 PM MST
Where: Bowman County, 6.29 mi WNW of Rhame
Measured: 1.75 in hail
Reported by: Public
Coordinates: 46.280, -103.760

Hail, Bowman

When: July 11, 5:47 PM MST to 5:50 PM MST
Where: Bowman County, 0.48 mi W of Rhame
Measured: 1 in hail
Reported by: Public
Coordinates: 46.230, -103.660

Hail, Adams

When: July 11, 6:15 PM MST to 6:21 PM MST
Where: Adams County, 16.56 mi ENE of Haynes
Measured: 1.5 in hail
Reported by: Trained Spotter
Coordinates: 46.100, -102.180

What these are

Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in North Dakota in 2023 Every state in 2023 This day in weather history Warnings in North Dakota, July 2023

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 1112292, 1112293, 1112294, 1112295.