Alert archive / North Dakota / Tornado Watches in 2001

Tornado Watch 384

June 9, 200110 counties in Montana; 24 counties in North Dakota

The Storm Prediction Center issued this tornado watch at Jun 9, 2001, 2:45 PM MDT for 10 counties in Montana; 24 counties in North Dakota. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Jun 9, 2001, 2:45 PM MDT (20:45 UTC)
Expired: Jun 9, 2001, 10:00 PM MDT
In force: 7 hr
Issued by: the Storm Prediction Center

All 34 counties

Custer County, MT, Dawson County, MT, Fallon County, MT, Garfield County, MT, McCone County, MT, Prairie County, MT, Richland County, MT, Rosebud County, MT, Treasure County, MT, Wibaux County, MT, Adams County, ND, Billings County, ND, Bowman County, ND, Burleigh County, ND, Dunn County, ND, Eddy County, ND, Emmons County, ND, Foster County, ND, Golden Valley County, ND, Grant County, ND, Hettinger County, ND, Kidder County, ND, Logan County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Oliver County, ND, Sheridan County, ND, Sioux County, ND, Slope County, ND, Stark County, ND, Stutsman County, ND, Wells County, ND

Warnings issued inside it

18 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jun 9, 3:28 PM MDT	Severe Thunderstorm Warning	BIS	Mercer	62 min
Jun 9, 3:40 PM MDT	Severe Thunderstorm Warning	GGW	Richland	35 min
Jun 9, 3:45 PM MDT	Severe Thunderstorm Warning	BIS	Dunn, Stark	30 min
Jun 9, 3:52 PM MDT	Severe Thunderstorm Warning	BIS	Golden Valley, McKenzie	53 min
Jun 9, 3:57 PM MDT	Tornado Warning	BIS	Mercer, Oliver	33 min
Jun 9, 4:28 PM MDT	Severe Thunderstorm Warning	BIS	Oliver	62 min
Jun 9, 4:39 PM MDT	Severe Thunderstorm Warning	BIS	Burleigh, Morton	66 min
Jun 9, 4:49 PM MDT	Severe Thunderstorm Warning	BIS	Dunn	56 min
Jun 9, 5:30 PM MDT	Severe Thunderstorm Warning	BIS	Stark	60 min
Jun 9, 5:44 PM MDT	Severe Thunderstorm Warning	BIS	Burleigh, Kidder, Morton	61 min
Jun 9, 5:57 PM MDT	Severe Thunderstorm Warning	BIS	Morton	63 min
Jun 9, 6:06 PM MDT	Severe Thunderstorm Warning	BIS	Emmons	54 min
Jun 9, 6:10 PM MDT	Severe Thunderstorm Warning	BIS	McLean, Mercer, Oliver	65 min
Jun 9, 6:18 PM MDT	Severe Thunderstorm Warning	BIS	Hettinger	57 min
Jun 9, 6:28 PM MDT	Severe Thunderstorm Warning	BIS	Logan	62 min
Jun 9, 6:45 PM MDT	Severe Thunderstorm Warning	BIS	Grant	60 min
Jun 9, 7:31 PM MDT	Severe Thunderstorm Warning	BIS	Morton, Sioux	59 min
Jun 9, 7:31 PM MDT	Severe Thunderstorm Warning	BIS	Logan	44 min

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 8.8 hours before the alert went out and 246 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: 37 J/kg
Mixed-layer CIN: -228 J/kg
Mixed-layer LCL: 1810 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 145 m²/s²
0-3 km storm-relative helicity: 127 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

000 
WWUS9 KMKC 092036
SEL4  

SEL4  
MKC WW 092031
MTZ000-NDZ000-100400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 384
STORM PREDICTION CENTER NORMAN OK
231 PM MDT SAT JUN 9 2001

THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

   EASTERN MONTANA                            
   WESTERN AND SOUTHERN NORTH DAKOTA                       

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 245 PM UNTIL
1000 PM MDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 200 STATUTE MILES EAST AND WEST
OF A LINE FROM 80 MILES SOUTHWEST OF DICKINSON NORTH DAKOTA TO 25
MILES WEST NORTHWEST OF ROSEGLEN NORTH DAKOTA.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. 
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...  CONTINUE...WW 382...WW 383...

DISCUSSION...SUPERCELLS/POSSIBLE TORNADOES EXPECTED TO TRACK EAST
ACROSS WW AHEAD OF STRONG NRN ROCKIES SHORTWAVE TROUGH.   

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. 
MEAN STORM MOTION VECTOR 27030.

...CORFIDI

;474,0980 455,0994 455,1080 474,1063;

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 8, 8:15 PM MDT	Severe Thunderstorm Watch	SPC	Big Horn, Powder River, Rosebud, Treasure, Yellowstone	5 hr
Jun 9, 11:45 AM MDT	Severe Thunderstorm Watch	SPC	Custer, Daniels, Dawson, Fallon, Garfield, McCone and 10 more	6 hr
Jun 9, 2:45 PM MDT	Tornado Watch	SPC	Big Horn, Carter, Powder River	7 hr
Jun 9, 2:45 PM MDT	Severe Thunderstorm Watch	SPC	Benson, Bottineau, Burke, Cavalier, Divide, Grand Forks and 12 more	7 hr

Nearby

Tornado Watches in North Dakota, 2001 Tornado Watches in Montana, 2001 Every tornado watch 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.