Tornado Watch 599

Issued

Jul 20, 2000, 1:45 PM MDT (19:45 UTC)

Expired

Jul 20, 2000, 9:00 PM MDT

In force

7 hr

Issued by

the Storm Prediction Center

The Denver radar (KFTG), 49 km from the middle of the area, began a volume at 19:45 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.

000 
WWUS9 KMKC 201926
MKC WW 201917
COZ000-210300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 599
STORM PREDICTION CENTER NORMAN OK
117 PM MDT THU JUL 20 2000

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

   EASTERN COLORADO                           

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 145 PM UNTIL 900
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 80 STATUTE MILES EAST AND WEST
OF A LINE FROM 55 MILES NORTHEAST OF FORT COLLINS COLORADO TO 50
MILES EAST SOUTHEAST OF TRINIDAD 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...  WW 598...

DISCUSSION...THUNDERSTORMS DEVELOPING ATTM OVER THE HIGH TERRAIN OF
CNTRL CO APPEAR TO BE RELATED TO WEAK SRN STREAM IMPULSE/UPPER
DIVERGENCE AREA MOVING ENE FROM UT.  WITH SURFACE HEATING
CONTINUING E OF THE MOUNTAINS AND AMPLE MOISTURE IN PLACE...EXPECT
STORMS TO INCREASE IN COVERAGE/INTENSITY AS THEY SPREAD E INTO THE
PLAINS.  SUFFICIENT DEEP LAYER SHEAR /40-50 KT/ IS PRESENT FOR
SUPERCELLS.  COUPLED WITH HIGH SURFACE DEWPOINTS AND PERSISTENT
SELY LOW LEVEL FLOW...THE POSSIBILITY WILL EXIST FOR A FEW
TORNADOES IN ADDITION TO LARGE HAIL/HIGH WINDS.   

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 29025.

...CORFIDI

;410,1024 365,1020 365,1045 410,1054;

Tornado Watches in Colorado, 2000Every tornado watch in 2000

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.