Alert archive / North Dakota / Tornado Warnings in 2001

Tornado Warning 9, NWS Bismarck, ND

July 17, 2001Morton County, North Dakota

NWS Bismarck, ND issued this tornado warning at Jul 17, 2001, 4:48 PM MDT for Morton County, North Dakota. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Jul 17, 2001, 4:48 PM MDT (22:48 UTC)
Expired: Jul 17, 2001, 5:15 PM MDT
In force: 27 min
Issued by: NWS Bismarck, ND
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Morton County, ND

The radar

The Bismarck radar (KBIS), 87 km from the middle of the area, began a volume at 22:50 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, 1:00 PM MDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 10.8 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: 1827 J/kg
Mixed-layer CIN: -176 J/kg
Mixed-layer LCL: 1544 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 183 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS53 KBIS 172250
TORBIS

NDC059-172315-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
448 PM MDT TUE JUL 17 2001

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN MORTON COUNTY IN SOUTH CENTRAL NORTH DAKOTA
  THIS REPLACES THE SEVERE THUNDERSTORM WARNING IN EFFECT
  FOR WESTERN MORTON COUNTY.

* UNTIL 515 PM MDT

* AT 448 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A TORNADO 7 MILES WEST OF GLEN ULLIN...OR ABOUT 41 MILES EAST OF
  DICKINSON...MOVING SOUTH AT 10 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  RURAL WESTERN MORTON COUNTY AT 500 PM MDT

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 600 PM MDT
TUESDAY EVENING FOR SOUTHERN NORTH DAKOTA.

LAT...LON 4697 10206 4675 10206 4675 10165 4698 10160

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 7:02 PM MDT	Severe Thunderstorm Warning	BIS	Ward	58 min
Jul 17, 3:00 PM MDT	Severe Thunderstorm Warning	BIS	Morton	60 min
Jul 17, 3:11 PM MDT	Severe Thunderstorm Warning	BIS	Kidder, Wells	64 min
Jul 17, 3:42 PM MDT	Tornado Warning	BIS	Kidder	33 min
Jul 17, 3:58 PM MDT	Severe Thunderstorm Warning	BIS	Morton	62 min
Jul 17, 4:16 PM MDT	Tornado Warning	BIS	Kidder, Stutsman	44 min
Jul 17, 4:42 PM MDT	Severe Thunderstorm Warning	BIS	Wells	63 min
Jul 17, 4:58 PM MDT	Tornado Warning	BIS	Stutsman	47 min
Jul 17, 5:45 PM MDT	Tornado Warning	BIS	Stutsman	45 min

Nearby

Tornado Warnings in North Dakota, 2001 Every tornado warning in 2001 Tornadoes in 2001

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.