Alert archive / Colorado / Tornado Watches in 2001

Tornado Watch 379

June 7, 200118 counties in Colorado

The Storm Prediction Center issued this tornado watch at Jun 7, 2001, 2:30 PM MDT for 18 counties in Colorado. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jun 7, 2001, 2:30 PM MDT (20:30 UTC)
Expired
Jun 7, 2001, 8:00 PM MDT
In force
6 hr
Issued by
the Storm Prediction Center

Counties Adams County, CO, Arapahoe County, CO, Broomfield County, CO, Cheyenne County, CO, Crowley County, CO, Denver County, CO, Douglas County, CO, El Paso County, CO, Elbert County, CO, Kiowa County, CO, Kit Carson County, CO, Larimer County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Pueblo County, CO, Washington County, CO, Weld County, CO

The radar

The Denver radar (KFTG), 82 km from the middle of the area, began a volume at 20:29 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

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

IssuedProductOfficeCountiesLasted
Jun 7, 3:11 PM MDTSevere Thunderstorm WarningGLDCheyenne34 min
Jun 7, 3:45 PM MDTSevere Thunderstorm WarningGLDCheyenne, Kit Carson60 min
Jun 7, 3:59 PM MDTSevere Thunderstorm WarningPUBEl Paso76 min
Jun 7, 4:15 PM MDTSevere Thunderstorm WarningBOUMorgan, Washington45 min
Jun 7, 4:31 PM MDTTornado WarningBOUMorgan, Washington44 min
Jun 7, 4:32 PM MDTTornado WarningBOULincoln43 min
Jun 7, 4:35 PM MDTTornado WarningPUBEl Paso55 min
Jun 7, 4:42 PM MDTSevere Thunderstorm WarningBOUElbert, Lincoln33 min
Jun 7, 4:46 PM MDTSevere Thunderstorm WarningGLDCheyenne, Kit Carson59 min
Jun 7, 5:03 PM MDTSevere Thunderstorm WarningBOUElbert42 min
Jun 7, 5:04 PM MDTSevere Thunderstorm WarningBOULincoln41 min
Jun 7, 5:15 PM MDTTornado WarningBOUWashington30 min
Jun 7, 5:29 PM MDTSevere Thunderstorm WarningPUBEl Paso61 min
Jun 7, 5:40 PM MDTSevere Thunderstorm WarningPUBPueblo95 min
Jun 7, 5:43 PM MDTTornado WarningBOUWashington32 min
Jun 7, 5:57 PM MDTTornado WarningBOULincoln33 min
Jun 7, 6:11 PM MDTSevere Thunderstorm WarningBOUWeld49 min
Jun 7, 6:14 PM MDTTornado WarningBOUWashington31 min
Jun 7, 6:24 PM MDTSevere Thunderstorm WarningBOULincoln51 min
Jun 7, 7:19 PM MDTSevere Thunderstorm WarningBOUWeld41 min

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 8.5 hours before the alert went out and 32 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-pSkew-T log-p diagram, Denver, CO at 12:00Z on 2001-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 499 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2001-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 61 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
499 J/kg
Mixed-layer CIN
-246 J/kg
Mixed-layer LCL
1015 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
61 m²/s²
0-3 km storm-relative helicity
152 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.4

Open this sounding in Storm Lab

The text

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

000 
WWUS9 KMKC 072012
SEL9  

SEL9  
MKC WW 072004
COZ000-080200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 379
STORM PREDICTION CENTER NORMAN OK
204 PM MDT THU JUN 7 2001

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

   EASTERN COLORADO                           

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 215 PM UNTIL 800
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 75 STATUTE MILES EAST AND WEST
OF A LINE FROM 55 MILES NORTHEAST OF FORT COLLINS COLORADO TO 15
MILES EAST SOUTHEAST OF LA JUNTA COLORADO.

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 378...

DISCUSSION...THUNDERSTORMS SHOULD INCREASE IN COVERAGE/INTENSITY IN
WATCH AREA THIS EVENING.  A FEW SUPERCELLS ARE EXPECTED...
ESPECIALLY ACROSS NERN HALF OF WATCH.  LIGHT BUT VERY MOIST SELY
LOW LEVEL INFLOW SUGGESTS POTENTIAL FOR A FEW TORNADOES...
ESPECIALLY INVOF BOUNDARY STALLED NW/SE OVER ERN CO.  LEFT-MOVERS/
STORM PROPAGATION MAY RESULT IN ACTIVITY SPREADING NWD ALONG THE
FOOTHILLS TO NEAR THE WY BORDER.  

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 500. 
MEAN STORM MOTION VECTOR 30020.

...CORFIDI

;410,1025 375,1015 375,1043 410,1054;

Nearby

Tornado Watches in Colorado, 2001Every 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; radar from the NEXRAD Level II archive.