Alert archive / North Dakota / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 554

July 14, 200120 counties in North Dakota; 13 counties in South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Jul 14, 2001, 2:00 PM MDT for 20 counties in North Dakota; 13 counties in South Dakota. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Jul 14, 2001, 2:00 PM MDT (20:00 UTC)
Expired: Jul 14, 2001, 8:00 PM MDT
In force: 6 hr
Issued by: the Storm Prediction Center

All 33 counties

Adams County, ND, Billings County, ND, Bowman County, ND, Burleigh County, ND, Dunn County, ND, Emmons County, ND, Golden Valley County, ND, Grant County, ND, Hettinger County, ND, Kidder 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, Wells County, ND, Butte County, SD, Campbell County, SD, Corson County, SD, Dewey County, SD, Harding County, SD, Hughes County, SD, Meade County, SD, Perkins County, SD, Potter County, SD, Stanley County, SD, Sully County, SD, Walworth County, SD, Ziebach County, SD

The radar

The Bismarck radar (KBIS), 152 km from the middle of the area, began a volume at 20:01 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

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

Issued	Product	Office	Counties	Lasted
Jul 14, 2:13 PM MDT	Severe Thunderstorm Warning	ABR	Corson	62 min
Jul 14, 2:34 PM MDT	Severe Thunderstorm Warning	UNR	Butte	56 min
Jul 14, 2:36 PM MDT	Flash Flood Warning	ABR	Corson	3 hr
Jul 14, 4:47 PM MDT	Severe Thunderstorm Warning	ABR	Campbell, McPherson	43 min
Jul 14, 4:59 PM MDT	Severe Thunderstorm Warning	ABR	Edmunds, Walworth	46 min
Jul 14, 5:04 PM MDT	Severe Thunderstorm Warning	ABR	Hughes	26 min
Jul 14, 5:10 PM MDT	Severe Thunderstorm Warning	ABR	Hyde, Potter, Sully	50 min
Jul 14, 5:31 PM MDT	Severe Thunderstorm Warning	ABR	Hughes	29 min

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 8.0 hours before the alert went out and 155 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: 1635 J/kg
Mixed-layer CIN: -110 J/kg
Mixed-layer LCL: 864 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 35 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

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

897 
WWUS9 KMKC 141925
SEL4  

SEL4  
MKC WW 141919
NDZ000-SDZ000-150200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 554
STORM PREDICTION CENTER NORMAN OK
219 PM CDT SAT JUL 14 2001

THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

   WESTERN AND CENTRAL NORTH DAKOTA                       
   NORTHWESTERN AND NORTH CENTRAL SOUTH DAKOTA                    

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 300 PM UNTIL 900
PM CDT.

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

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 100 STATUTE MILES
EAST AND WEST OF A LINE FROM 75 MILES WEST OF PIERRE SOUTH DAKOTA
TO 15 MILES NORTH NORTHEAST OF ROSEGLEN NORTH DAKOTA.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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.  SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES.


DISCUSSION...AIR MASS HAS DESTABILIZED TO A POINT OF EXTREME
INSTABILITY WITH SBCAPE BETWEEN 3000 AND 5000 J/KG.  SATELLITE
IMAGERY INDICATES MID LEVEL TROUGH MOVING EWD ACROSS ERN MT ATTM
AND SHOULD ENHANCE UVVS OVER THE NEXT SEVERAL HOURS.


AVIATION...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 26035.


...MCCARTHY

442,1034 475,1035 475,0993 442,0994

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 14, 3:00 PM MDT	Severe Thunderstorm Watch	SPC	Barnes, Cass, Dickey, Eddy, Foster, Grand Forks and 9 more	6 hr

Nearby

Severe Thunderstorm Watches in North Dakota, 2001 Severe Thunderstorm Watches in South Dakota, 2001 Every severe thunderstorm 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; radar from the NEXRAD Level II archive.