Severe Thunderstorm Warning 222, NWS Denver/Boulder, CO

000 
WWUS55 KBOU 222056
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
255 PM MDT MON AUG 22 2005

COC013-014-222105-
/O.CAN.KBOU.SV.W.0222.000000T0000Z-050822T2130Z/
BOULDER CO-BROOMFIELD CO-
255 PM MDT MON AUG 22 2005

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL BROOMFIELD AND
SOUTHEASTERN BOULDER COUNTIES IS CANCELLED...

THE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED RAPIDLY 
AND IS NO LONGER EXPECTED TO PRODUCE SEVERE WEATHER.

LAT...LON 4012 10522 4000 10530 3993 10507 4009 10509

$$
MRB

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DENVER CO
255 AM MDT MON AUG 22 2005

.SHORT TERM...PREVIOUS UPPER LEVEL LOW THAT WAS WELL DEFINED
YESTERDAY HAS BECOME ILL DEFINED IN WATER VAPOR IMAGERY EARLY THIS
MORNING.  ETA12 HAS SOME TYPE OF ELONGATED WEAK CIRCULATION ACROSS
SRN WYOMING-NRN COLORADO THRU THIS AFTN WITH WEAK WNW FLOW ALOFT
ACROSS MOST OF CWA.  WITH FAIRLY DECENT LAPSE RATES AND LINGERING
MID LEVEL MOISTURE SHOULD SEE WDLY SCT TSTMS DEVELOP ONCE AGAIN IN
THE MTNS...FOOTHILLS AND NERN PLAINS.  OUTFLOW BOUNDARIES FROM MTN
AND FOOTHILLS CONVECTION WILL LIKELY PROVIDE SOME FOCUS FOR TSTM
DEVELOPMENT OVER NERN PLAINS LATER THIS AFTN INTO THE EARLY EVENING
HOURS.  FLOW ALOFT TODAY WILL BE A LITTLE STRONGER THAN YESTERDAY SO
STORMS SHOULD NOT BE AS SLOW MOVING AS YESTERDAY.  COULD STILL SEE
SOME LOCALLY HEAVY RAINS IN A FEW SPOTS OVER THE PLAINS AS
PRECIPITABLE WATER VALUES WILL BE NEAR AN INCH.  HIGH TEMPS TODAY
SHOULD BE SIMILAR TO YESTERDAY AS READINGS IN THE 850-700 MB LAYER
CHANGE LITTLE.  FOR TONIGHT EXPECT SOME LINGERING CONVECTION DURING
THE EVENING HOURS WHICH SHOULD END BEFORE MIDNIGHT.  ETA12 SHOWS
WIDESPREAD LOW CLOUDS AND SOME FOG COULD DEVELOP LATE TONIGHT INTO
TUE MORNING OVER PORTIONS OF THE NERN PLAINS BUT I WILL KEEP IT EAST
OF THE URBAN CORRIDOR FOR NOW.

.LONG TERM...FLOW ALF WL TURN WLY IN THE MRNG TUES...AND AS IT DOES
SO...MSTR FM THE SFC UP TO H6 WL DRY OUT APPRECIABLY.  SOME
SUBSIDENCE WL ALSO OCCUR NR THE FNT RANGE...THUS CONDITIONS WL
GNRLLY BCM MUCH MORE PCPN AVERSE THAN THE PAST FEW DAYS.  HWVR...BY
MID AFTN...A SIGNIFICANT UPR LVL TROF WL QUICKLY RACE THRU THE
AREA.  NAM TAKES THIS FNT ACRS THE DIA AREA ARND 21Z AT WHICH TIME
GOOD MID LVL MSTR AND LIFT ARE APPARENT ON THE CROSS SECTIONS.  GFS
ISNT TOO DIFFERENT IN THESE RESPECTS.  SO THERE WL A FVRBL PD TUES
AFTN/EVENING FOR AN ORGANIZED BAND OF PCPN TO MOV THRU THE AREA AS
THE TROF ROLLS THRU.  SINCE THE MOVEMENT OF THE TROF IS SO
RAPID...QPF SHOULD STAY ON THE LIGHT SIDE.

AFT TUESDAY FLOW ALF WL RMN WLY AND QUITE DRY THRU THE MIDDLE
PORTION OF THE WEEK AS ZONAL FLOW SETS UP ACRS THE WRN 2/3RD OF
AMERICA.  A FALL-LIKE LOW PRESSURE SYSTEM WL ROLL THRU THE NRN TIER
OF STATES THRUOUT THE WEEK AND THE LAST TROF ASSOCIATED WITH THIS
SYSTEM WL PASS THRU THE AREA THURS.  A SLIGHT COOLDOWN WITH A LTL
BETTER CHC FOR PCPN ON THE PLAINS WILL RESULT.  AFTER THEN...HIGH
PRESSURE WL EXTEND FM TX WWD INTO CALIFORNIA...WHILE THE POINTS FM
WYOMING NWD TO THE CANADIAN BORDER ARE BUFFETED BY STG WLY FLOW.  WE
WL BE BTWN THESE TWO AREAS AND IT REMAINS TO BE SEEN IF THE
STREAMLINES WL BCM ORIENTED IN A FVRBL WAY FOR SOME MSTR FM HILARY
TO REACH OUR AREA NEXT WEEKEND. FOR NOW...WL KEEP THE NEAR CLIMO
FCST GOING WITH LOW GRADE POPS FOR THE MTNS.

.BOU...NONE.

&&

RPK/046

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DENVER CO
1051 AM MDT MON AUG 22 2005

COZ030>051-231200-
JACKSON COUNTY BELOW 9000 FEET-WEST JACKSON AND WEST GRAND
COUNTIES ABOVE 9000 FEET-GRAND AND SUMMIT COUNTIES BELOW 9000
FEET-SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/
NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET-SOUTH AND SOUTHEAST
GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/GILPIN/CLEAR CREEK/
SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE 9000 FEET-LARIMER AND
BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET-JEFFERSON AND WEST
DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK
COUNTIES BELOW 9000 FEET-CENTRAL AND SOUTHEAST PARK COUNTY-LARIMER
COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY-BOULDER AND JEFFERSON
COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY-NORTH DOUGLAS
COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE COUNTIES/
EAST BROOMFIELD COUNTY-ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES
ABOVE 6000 FEET-NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD
COUNTY-MORGAN COUNTY-CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES-
NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN
COUNTY-SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN
COUNTY-LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY-PHILLIPS
COUNTY-
1051 AM MDT MON AUG 22 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL
COLORADO.

.DAY ONE...TODAY AND TONIGHT

SCATTERED THUNDERSTORMS WILL DEVELOP THIS AFTERNOON AND CONTINUE
INTO THE EARLY EVENING HOURS IN THE MOUNTAINS AND FOOTHILLS.  OTHER
THUNDERSTORMS ARE EXPECTED TO DEVELOP OVER PORTIONS OF THE NORTHEAST
PLAINS.  SOME OF THE STORMS WILL PRODUCE HEAVY RAIN...SMALL HAIL AND
GUSTY WINDS.  ALTHOUGH THE THREAT OF SEVERE WEATHER IS LOW...AN
ISOLATED STORM OVER THE NORTHEAST PLAINS COULD PRODUCE HAIL UP TO
ONE INCH IN DIAMETER.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

SCATTERED AFTERNOON AND EVENING THUNDERSTORMS ARE EXPECTED TO
DEVELOP TUESDAY AS AN UPPER LEVEL TROUGH MOVES ACROSS THE AREA.  A
FEW STORMS MAY APPROACH SEVERE LIMITS WITH THE PRIMARY THREAT BEING
STRONG WINDS DUE TO DRY LOWER LEVEL CONDITIONS.  WEDNESDAY WILL BE
DRIER AND WARMER.  ANOTHER UPPER TROUGH WILL MOVE ACROSS THE AREA ON
THURSDAY WHICH WILL LEAD TO A BETTER CHANCE OF AFTERNOON AND EVENING
STORMS.  DRIER AND WARMER WEATHER WILL RETURN FRIDAY AND CONTINUE
THROUGH THE WEEKEND.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT.

D-L/GARD...WFO BOULDER