Alert archive / North Dakota / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 114, NWS Bismarck, ND

July 17, 2019Grant County, Hettinger County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 17, 2019, 3:56 PM MDT for Grant County, Hettinger County, North Dakota. It was in force for 49 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: Jul 17, 2019, 3:56 PM MDT (21:56 UTC)
Expired: Jul 17, 2019, 4:45 PM MDT
In force: 49 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Grant County, ND, Hettinger County, ND

The radar

The Bismarck radar (KBIS), 107 km from the middle of the area, began a volume at 21:56 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

Rapid City, SD (KUNR), launched 12:00Z, 9.9 hours before the alert went out and 267 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: 180 J/kg
Mixed-layer CIN: -389 J/kg
Mixed-layer LCL: 1287 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 310 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

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 Jul 17, 2:13 PM MDT, 1 hour 43 minutes earlier.

Area forecast discussion, Jul 17, 2:13 PM MDT, 1 hour 43 minutes before

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Hazardous weather outlook, Jul 17, 1:39 PM MDT, 2 hours 17 minutes before

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In the hours before

Special weather statement, Jul 17, 3:29 PM MDT, 27 minutes before

Special Weather Statement
National Weather Service Bismarck ND
329 PM MDT Wed Jul 17 2019

NDZ041-172200-
Hettinger ND-
329 PM MDT Wed Jul 17 2019

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN HETTINGER COUNTY
UNTIL 400 PM MDT...

At 329 PM MDT, a strong thunderstorm was located over Mott, moving
east at 25 mph.

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

Locations impacted include...
Mott, Burt and Bentley.

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 4631 10249 4643 10249 4649 10205 4629 10205
TIME...MOT...LOC 2129Z 267DEG 22KT 4638 10236

JONES

Special weather statement, Jul 17, 3:36 PM MDT, 20 minutes before

Special Weather Statement
National Weather Service Bismarck ND
436 PM CDT Wed Jul 17 2019

NDZ017-018-172215-
McKenzie ND-Dunn ND-
436 PM CDT Wed Jul 17 2019

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN DUNN AND CENTRAL
MCKENZIE COUNTIES UNTIL 515 PM CDT/415 PM MDT/...

At 436 PM CDT/336 PM MDT/, a strong thunderstorm was located over
Watford City, moving east at 35 mph.

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

Locations impacted include...
Watford City, Arnegard and Johnsons Corner.

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 4770 10345 4788 10343 4789 10276 4759 10284
TIME...MOT...LOC 2136Z 275DEG 31KT 4779 10333

KRANZ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 6:19 PM MDT	Severe Thunderstorm Warning	BIS	Grant	56 min
Jul 16, 7:00 PM MDT	Severe Thunderstorm Warning	BIS	Grant, Sioux	45 min
Jul 16, 7:14 PM MDT	Severe Thunderstorm Warning	BIS	Hettinger, Stark	46 min
Jul 16, 7:56 PM MDT	Severe Thunderstorm Warning	BIS	Hettinger	64 min
Jul 16, 8:59 PM MDT	Severe Thunderstorm Warning	BIS	Grant, Hettinger	61 min
Jul 16, 9:15 PM MDT	Special Weather Statement	BIS	McKenzie	30 min
Jul 16, 9:35 PM MDT	Special Weather Statement	BIS	McKenzie	40 min
Jul 16, 10:21 PM MDT	Special Weather Statement	BIS	Oliver	39 min
Jul 16, 11:12 PM MDT	Special Weather Statement	BIS	Billings, Golden Valley	48 min
Jul 16, 11:44 PM MDT	Special Weather Statement	BIS	Logan	31 min
Jul 17, 12:14 AM MDT	Special Weather Statement	BIS	Logan	46 min
Jul 17, 12:36 AM MDT	Areal Flood Advisory	BIS	Kidder, Wells	3 hr
Jul 17, 1:05 AM MDT	Special Weather Statement	BIS	Foster	40 min
Jul 17, 1:39 AM MDT	Areal Flood Advisory	BIS	Foster, Stutsman, Wells	3 hr
Jul 17, 3:29 PM MDT	Special Weather Statement	BIS	Hettinger	31 min
Jul 17, 3:36 PM MDT	Special Weather Statement	BIS	McKenzie	39 min
Jul 17, 5:17 PM MDT	Severe Thunderstorm Warning	BIS	Grant, Sioux	58 min
Jul 17, 5:38 PM MDT	Severe Thunderstorm Warning	BIS	Billings, Dunn, Stark	67 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2019 Every severe thunderstorm warning in 2019

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.