Alert archive / North Dakota / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 213, NWS Bismarck, ND

July 17, 20204 counties in North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 17, 2020, 8:38 PM CDT for 4 counties in 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: Jul 17, 2020, 8:38 PM CDT (01:38 UTC)
Expired: Jul 17, 2020, 9:45 PM CDT
In force: 67 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Kidder County, ND, LaMoure County, ND, Logan County, ND, Stutsman County, ND

The radar

The Bismarck radar (KBIS), 120 km from the middle of the area, began a volume at 01:40 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 17, 12:30 PM CDT	Severe Thunderstorm Watch	SPC	10 hr
Jul 17, 5:39 PM CDT	Severe Thunderstorm Watch PDS	SPC	8 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 1.6 hours before the alert went out and 115 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: 862 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1807 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 64 m²/s²
0-3 km storm-relative helicity: 58 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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, 8:28 PM CDT, 10 minutes earlier.

Area forecast discussion, Jul 17, 8:28 PM CDT, 10 minutes before

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Hazardous weather outlook, Jul 17, 8:30 PM CDT, 8 minutes before

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In the hours before

Local storm report, Jul 17, 6:50 PM CDT, 1 hour 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
650 PM CDT FRI JUL 17 2020

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

0635 PM     TSTM WND GST     1 W CARRINGTON          47.45N 99.15W
07/17/2020  M55 MPH          FOSTER             ND   AWOS

            AWOS STATION K46D CARRINGTON ND AWOS.

&&

MJ

Local storm report, Jul 17, 6:58 PM CDT, 1 hour 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
658 PM CDT FRI JUL 17 2020

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

0648 PM     HAIL             3 N BISMARCK            46.84N 100.79W
07/17/2020  E0.88 INCH       BURLEIGH           ND   PUBLIC

&&

Local storm report, Jul 17, 7:02 PM CDT, 1 hour 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
702 PM CDT FRI JUL 17 2020

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

0642 PM     NON-TSTM WND GST CARRINGTON              47.45N 99.13W
07/17/2020  E60 MPH          FOSTER             ND   TRAINED SPOTTER

&&

RK

Local storm report, Jul 17, 7:44 PM CDT, 54 minutes before

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Local storm report, Jul 17, 8:16 PM CDT, 22 minutes before

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Special weather statement, Jul 17, 8:19 PM CDT, 19 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 7:22 PM CDT	Severe Thunderstorm Warning	BIS	Stutsman	53 min
Jul 17, 7:43 PM CDT	Severe Thunderstorm Warning	BIS	Burleigh, Kidder	62 min
Jul 17, 8:19 PM CDT	Special Weather Statement	BIS	Sioux	11 min
Jul 17, 8:45 PM CDT	Severe Thunderstorm Warning	BIS	Emmons, Sioux	60 min
Jul 17, 9:22 PM CDT	Severe Thunderstorm Warning	BIS	Logan	53 min
Jul 17, 10:09 PM CDT	Special Weather Statement	BIS	McIntosh	51 min
Jul 17, 10:35 PM CDT	Special Weather Statement	BIS	Dickey, McIntosh	40 min
Jul 18, 4:19 PM CDT	Special Weather Statement	BIS	Oliver	41 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2020 Every 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.