Alert archive / North Dakota / Tornado Watches in 2000

Tornado Watch 433

June 12, 2000Fallon County, Montana; 16 counties in North Dakota

The Storm Prediction Center issued this tornado watch at Jun 12, 2000, 5:15 PM MDT for Fallon County, Montana; 16 counties in North Dakota. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued: Jun 12, 2000, 5:15 PM MDT (23:15 UTC)
Expired: Jun 12, 2000, 9:00 PM MDT
In force: 4 hr
Issued by: the Storm Prediction Center

Counties Fallon County, MT, Adams County, ND, Benson County, ND, Billings County, ND, Bowman County, ND, Burleigh County, ND, Dunn County, ND, Grant County, ND, Hettinger County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Oliver County, ND, Sheridan County, ND, Slope County, ND, Stark County, ND, Wells County, ND

The radar

The Bismarck radar (KBIS), 138 km from the middle of the area, began a volume at 23:19 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.

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Jun 12, 5:31 PM MDT	Tornado Warning	BIS	Billings	29 min
Jun 12, 6:29 PM MDT	Severe Thunderstorm Warning	BIS	Dunn, Stark	31 min
Jun 12, 6:34 PM MDT	Severe Thunderstorm Warning	BIS	Bowman	56 min
Jun 12, 7:00 PM MDT	Severe Thunderstorm Warning	BIS	Dunn	45 min
Jun 12, 7:30 PM MDT	Severe Thunderstorm Warning	BIS	Bowman	60 min
Jun 12, 8:38 PM MDT	Severe Thunderstorm Warning	BIS	Adams, Bowman	67 min
Jun 12, 8:48 PM MDT	Severe Thunderstorm Warning	BIS	Hettinger	57 min

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 11.3 hours before the alert went out and 143 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: 80 J/kg
Mixed-layer CIN: -312 J/kg
Mixed-layer LCL: 1408 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WWUS9 KMKC 122304
MKC WW 122304
NDZ000-130300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 433
STORM PREDICTION CENTER NORMAN OK
504 PM MDT MON JUN 12 2000

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

   WESTERN AND CENTRAL NORTH DAKOTA                       

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 515 PM UNTIL 900
PM MDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 80 STATUTE MILES EAST AND WEST
OF A LINE FROM 55 MILES WEST OF LEMMON SOUTH DAKOTA TO 60 MILES
EAST NORTHEAST 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 429...WW 430...WW
431...WW 432...

DISCUSSION...THUNDERSTORMS EXPECTED TO INCREASE IN COVERAGE/
INTENSITY INVOF STALLED FRONT ORIENTED NE/SW ACROSS WRN ND.  AMPLE
DEEP LAYER SHEAR /ON THE ORDER OF 50 KTS/ TO SUPPORT SUPERCELLS
WITH LARGE HAIL/BOWS...WITH GREATEST THREAT FOR TORNADOES ALONG AND
JUST N OF FRONT. 

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. 
MEAN STORM MOTION VECTOR 24035.

...CORFIDI

;480,0985 455,1013 455,1045 480,1022;

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 12, 3:15 PM MDT	Tornado Watch	SPC	Barnes, Cass, Dickey, Eddy, Emmons, Foster and 13 more	6 hr

Nearby

Tornado Watches in North Dakota, 2000 Tornado Watches in Montana, 2000 Every tornado watch in 2000

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.