Alert archive / Colorado / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 587

July 17, 20008 counties in Colorado

The Storm Prediction Center issued this severe thunderstorm watch at Jul 17, 2000, 4:30 PM MDT for 8 counties in Colorado. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Jul 17, 2000, 4:30 PM MDT (22:30 UTC)
Expired: Jul 17, 2000, 10:00 PM MDT
In force: 6 hr
Issued by: the Storm Prediction Center

Counties Baca County, CO, Bent County, CO, Crowley County, CO, Kiowa County, CO, Las Animas County, CO, Otero County, CO, Prowers County, CO, Pueblo County, CO

The radar

The Pueblo radar (KPUX), 81 km from the middle of the area, began a volume at 22:30 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

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

Issued	Product	Office	Counties	Lasted
Jul 17, 7:03 PM MDT	Tornado Warning	PUB	Bent	57 min

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 10.5 hours before the alert went out and 213 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 849 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: 34 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.

042 
WWUS9 KMKC 172208
SEL7  

SEL7  
MKC WW 172202
COZ000-180400-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 587
STORM PREDICTION CENTER NORMAN OK
402 PM MDT MON JUL 17 2000

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

SOUTHEASTERN COLORADO                           

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 430 PM UNTIL 1000
PM MDT.

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 55 STATUTE MILES
EITHER SIDE OF A LINE FROM 35 MILES SOUTH OF PUEBLO COLORADO TO 40
MILES EAST SOUTHEAST OF LAMAR COLORADO.

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.

OTHER WATCH INFORMATION...  CONTINUE...WW 586...

DISCUSSION...BAND OF STRONG THUNDERSTORMS EXPECTED TO MOVE EWD INTO
LOW LEVEL MOIST AXIS WITH CONTINUED THREAT OF LARGE HAIL AND
DAMAGING WINDS.

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 27025.

...JOHNS

383,1043 383,1020 370,1015 365,1042

Nearby

Severe Thunderstorm Watches in Colorado, 2000 Every severe thunderstorm 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.