Severe Thunderstorm Warning 50, NWS Denver/Boulder, CO

NORTHEAST AND NORTH CENTRAL COLORADO AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DENVER COLORADO
230 PM MDT THU JUN 29 2000

CLEARING OCCURED ERLY THIS MORN...ALLOWING CONVECTIVE TEMPS TO BE
REACHED BEFORE NOON ACRS MOST OF FCST AREA.  ATM PRIMED FOR
CONVECTION THIS AFTN WITH SFC DEWPOINTS IN MID 50S AND CAPE VALUES
AOA 2000 J/KM.  FOCUSING MECH FOR TSTMS TDY WL BE A SHRT WV MOVG
THRU DIST.  SELS HAS ISSUED SVR TSTM WATCH TIL 1800 FOR FAR NERN
CORNER OF CO AND A LARGE AREA OF WRN NEB BASED ON THIS.  RMDR OF ERN
PLAINS WL ALSO BE IN A FAVORABLE AREA FOR CONVECTION AND THIS AREA
WL HV TO BE MONITORED CLOSELY THIS AFTN AS WELL.

FOR THIS EVE...WL KEEP STORMS GOING AS OUTFLOW FM STORMS WL KEEP
CONVECTION GOING TIL ARND SUNSET.  AFTERWARD...CONVECTIVE DEBRIS WL
PROBABLY HANG ARND LONG ENUF TNGT TO MAINTAIN PTLY CLDY WORDING FOR
PD 2.  LWR LVL MOISTURE WL CONTINUE TO BE SCOURED OUT OF DIST BY DRY
NWLY FLO AND AM NOT EXPECTING WDSPD LO CLDS/FOG TNGT.

ATM WL BE SIGNIFANTLY DRIER TMRW BUT ENUF H5-H6 MOISTURE WL CONTINUE
TO HANG ARND TO LEAD TO ANOTHER ROUND OF AFTN/EVE SHOWERS AND
TSTMS.  BUT STORMS SHUD NOT BE AS WDSPD TMRW AS STORMS WL NOT HV AS
MUCH SFC-BASED MOISTURE TO WORK WITH.  AS STG H5 RGE BUILDS OVR
STATE...TEMPS WL BE SLGTLY WRMR.  THIS WL MARK THE BEGINNING OF A
VERY WARM UPCOMING WEEKEND WITH MAX TEMPS RISING INTO THE LWR 90S
FOR THE NEXT SVRL DAYS.

FOR DAYS 3 THRU 5...MORE OF THE SAME.  00Z THU MRF VRY SMLR TO
PREVIOUS RUN.  VERY WARM DAYTIME TEMPS WITH AFTN/EVE SHRA AND TSTMS
EXPECTED TO CONTINUE THRU THE 4TH OF JULY.  THERE WL BE SOME DAILY
VARIATION IN EXTENT OF TSTM DVLPMNT...DEPENDING ON AVBL LWR-MID LVL
MOISTURE FM SWRN U.S. ...BUT NOT ENUF TO MAKE ANY CHGS TO XTNDED. 46

.DEN...NONE.

COZ030-032>050-292000-

SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO
NATIONAL WEATHER SERVICE DENVER CO
930 AM MDT THU JUN 29 2000

THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES

ADAMS     ARAPAHOE     BOULDER   CLEAR CREEK   DENVER       DOUGLAS
ELBERT    GILPIN       GRAND     JACKSON       JEFFERSON    LARIMER
LINCOLN   LOGAN        MORGAN    PARK          PHILLIPS     SEDGWICK
SUMMIT    WASHINGTON   WELD

SYNOPSIS: THE ATMOSPHERE HAS BECOME MORE UNSTABLE ACROSS THE ENTIRE
AREA TODAY DUE TO MORE SURFACE HEATING...WHILE AN UPPER LEVEL
DISTURBANCE MOVES ACROSS THE AREA THIS AFTERNOON. LATEST RADAR
INDICATED WIDELY SCATTERED SHOWERS AND A FEW THUNDERSTORMS HAVE
ALREADY DEVELOPED OVER THE MOUNTAINS...AND WILL PUSH ACROSS THE
URBAN CORRIDOR BETWEEN 10 AM AND NOON. THE STORMS WILL INITIALLY BE
WEAK...BUT AS THEY MOVE EASTWARD ACROSS NORTHEAST COLORADO...STORMS
WILL BECOME STRONGER DUE TO GREATER MOISTURE AND MORE HEATING.

A FEW OF THESE STORMS COULD BECOME SEVERE BY EARLY THIS AFTERNOON
ACROSS THE PLAINS OF NORTHEAST COLORADO. THE BEST POTENTIAL WOULD BE
ALONG AND EAST OF A LINE FROM LIMON NORTHWARD THROUGH FORT MORGAN
AND STERLING. BRIEF HEAVY RAIN...HAIL UP TO 1.50 INCHES IN
DIAMETER...AND WIND GUSTS TO 60 MPH WILL BE COMMON WITH THESE
STORMS.

SPOTTER ACTIVATION MAY BE NEEDED BY EARLY AFTERNOON OVER THE
NORTHEAST PLAINS OF COLORADO.

SWE

COZ030-032>050-292200-

SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO
NATIONAL WEATHER SERVICE DENVER CO
125 PM MDT THU JUN 29 2000

THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES

ADAMS     ARAPAHOE     BOULDER   CLEAR CREEK   DENVER       DOUGLAS
ELBERT    GILPIN       GRAND     JACKSON       JEFFERSON    LARIMER
LINCOLN   LOGAN        MORGAN    PARK          PHILLIPS     SEDGWICK
SUMMIT    WASHINGTON   WELD

SYNOPSIS: THE ATMOSPHERE IS STABILIZING ACROSS THE NORTHERN
MOUNTAINS...FOOTHILLS...AND URBAN CORRIDOR EARLY THIS AFTERNOON...AS
THE UPPER LEVEL DISTURBANCE HAS ALREADY MOVED THROUGH FRONT RANGE
SECTIONS ALONG WITH CONSIDERABLE DRYING IN THE LOW LEVELS.

FURTHER EAST...A BOUNDARY ACROSS EASTERN ELBERT AND EXTREME SOUTHERN
WASHINGTON COUNTIES HAS ALREADY KICKED OFF A THUNDERSTORM
ACROSS NORTHERN LINCOLN COUNTY. THE ATMOSPHERE HAS BECOME VERY
UNSTABLE ACROSS MUCH OF THE PALMER DIVIDE REGION. THE MAIN FOCUS FOR
SEVERE THUNDERSTORMS WILL BE ACROSS LINCOLN AND SOUTHEAST ELBERT
COUNTIES. LARGE HAIL...WIND GUSTS TO 50 MPH AND EVEN AN ISOLATED
TORNADO ARE POSSIBLE WITH THESE STORMS.

A SECONDARY THREAT FOR SEVERE STORMS IS ACROSS THE NORTHEAST CORNER
OF COLORADO...ACROSS PHILLIPS AND SEDGWICK COUNTIES...WHERE A SEVERE
THUNDERSTORM WATCH IS IN EFFECT UNTIL 6 PM. HOWEVER...FURTHER DRYING
OF THE LOW LEVELS MAY KEEP THUNDERSTORM DEVELOPMENT TO A MIyNIMUM IN
THOSE PARTS.

SPOTTER ACTIVATION MAY BE NEEDED ACROSS LINCOLN...SOUTHERN
ELBERT...AND PHILLIPS AND SEDGWICK COUNTIES BY MID AFTERNOON.

SWE