Alert archive / North Dakota / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 21, NWS Bismarck, ND

June 9, 2001Logan County, North Dakota

NWS Bismarck, ND issued this severe thunderstorm warning at Jun 9, 2001, 7:28 PM CDT for Logan County, North Dakota. It was in force for 62 min. 2 reports came from 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, with what was reported inside it.

The facts

Issued: Jun 9, 2001, 7:28 PM CDT (00:28 UTC)
Expired: Jun 9, 2001, 8:30 PM CDT
In force: 62 min
Issued by: NWS Bismarck, ND
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Logan County, ND

The radar

The Bismarck radar (KBIS), 95 km from the middle of the area, began a volume at 00:31 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.

What was reported inside it

Time	Report	Where	Remark
Jun 9, 7:53 PM CDT	Hail 0.75	Napoleon, ND	Duration of the hail was 25 minutes.
Jun 9, 8:10 PM CDT	Thunderstorm Wind 87 E	Napoleon, ND	Cooperative observer reported roof blown off a business and mature tree's uprooted.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jun 9, 3:45 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 0.5 hours before the alert went out and 90 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: 7 J/kg
Mixed-layer CIN: -389 J/kg
Mixed-layer LCL: 1623 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: -119 m²/s²
0-3 km storm-relative helicity: 48 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.5

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KBIS 100029
SVRBIS
NDC047-100130-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BISMARCK ND
728 PM CDT SAT JUN 9 2001

THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LOGAN COUNTY IN SOUTHEAST NORTH DAKOTA

* UNTIL 830 PM CDT

* AT 728 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 8 MILES NORTHWEST OF NAPOLEON...OR ABOUT 45
  MILES EAST OF BISMARCK...MOVING SOUTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  NAPOLEON AT 745 PM CDT
  BURNSTAD AT 815 PM CDT


THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE
FOR DAMAGING WINDS IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY
LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY
INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT SATURDAY EVENING 
FOR MOSTW OF SOUTHERN NORTH DAKOTA. REMEMBER...SEVERE THUNDERSTORMS 
CAN PRODUCE TORNADOES WITH LITTLE OR NO WARNING.

LAT...LON 4663 9993 4635 9990 4631 9905 4662 9910

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 7:06 PM CDT	Severe Thunderstorm Warning	BIS	Emmons	54 min
Jun 9, 7:10 PM CDT	Severe Thunderstorm Warning	BIS	McLean, Mercer, Oliver	65 min
Jun 9, 7:18 PM CDT	Severe Thunderstorm Warning	BIS	Hettinger	57 min
Jun 9, 7:45 PM CDT	Severe Thunderstorm Warning	BIS	Grant	60 min
Jun 9, 8:04 PM CDT	Severe Thunderstorm Warning	BIS	McIntosh	56 min
Jun 9, 8:31 PM CDT	Severe Thunderstorm Warning	BIS	Morton, Sioux	59 min
Jun 9, 8:31 PM CDT	Severe Thunderstorm Warning	BIS	Logan	44 min
Jun 9, 8:59 PM CDT	Severe Thunderstorm Warning	BIS	Dickey, McIntosh	46 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 2001 Every severe thunderstorm warning 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.