Alert archive / North Dakota / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 126, NWS Bismarck, ND

July 17, 2015Dickey County, LaMoure County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jul 17, 2015, 5:53 PM CDT for Dickey County, LaMoure 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: Jul 17, 2015, 5:53 PM CDT (22:53 UTC)
Expired: Jul 17, 2015, 7:00 PM CDT
In force: 67 min
Issued by: NWS Bismarck, ND
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Dickey County, ND, LaMoure County, ND

The radar

The Aberdeen radar (KABR), 92 km from the middle of the area, began a volume at 22:54 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, 3:43 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 10.9 hours before the alert went out and 154 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: 490 J/kg
Mixed-layer CIN: -181 J/kg
Mixed-layer LCL: 1592 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 40 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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, 1:15 PM CDT, 4 hours 38 minutes earlier.

Area forecast discussion, Jul 17, 1:15 PM CDT, 4 hours 38 minutes before

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Hazardous weather outlook, Jul 17, 2:05 PM CDT, 3 hours 48 minutes before

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In the hours before

Special weather statement, Jul 17, 5:18 PM CDT, 35 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
518 PM CDT FRI JUL 17 2015

NDZ050-051-172245-
DICKEY-MCINTOSH-
518 PM CDT FRI JUL 17 2015

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN MCINTOSH AND
SOUTHWESTERN DICKEY COUNTIES...

AT 518 PM CDT...A STRONG THUNDERSTORM WAS 8 MILES WEST OF SPRING
CREEK COLONY...OR 16 MILES SOUTHEAST OF ASHLEY...MOVING NORTHEAST AT
35 MPH.

WINDS IN EXCESS OF 40 MPH AND NICKEL SIZE HAIL ARE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
FORBES.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY CAUSE
LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT FOR
SOUTHEASTERN NORTH DAKOTA.

LAT...LON 4617 9880 4597 9854 4594 9865 4594 9885
      4595 9921
TIME...MOT...LOC 2218Z 238DEG 30KT 4594 9906

SIMOSKO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 7:15 PM CDT	Special Weather Statement	BIS	Divide	45 min
Jul 17, 5:18 PM CDT	Special Weather Statement	BIS	Dickey	27 min
Jul 17, 5:26 PM CDT	Severe Thunderstorm Warning	BIS	Dickey, McIntosh	64 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2015 Every severe thunderstorm warning in 2015

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.