Public Information Statement
Issued by NWS Denver/Boulder, CO

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
NOUS45 KBOU 110859
PNSBOU
COZ030>051-112300-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
259 AM MDT THU SEP 11 2014

...TODAY IN METRO DENVER WEATHER HISTORY...

5-13  IN 2010...THE FOURMILE CANYON WILDFIRE...NORTHWEST OF BOULDER...
        BROKE OUT ON THE MORNING OF THE 5TH.  IT ORIGINATED FROM
        AN UNATTENDED FIRE PIT AT A LOCAL RESIDENCE. THE WILDFIRE
        QUICKLY CONSUMED 5 1/2 SQUARE MILES OR 3500 ACRES THE
        FIRST DAY...AND FORCED THE EVACUATION OF OVER THREE
        THOUSAND RESIDENTS.  ERRATIC 45-MPH GUSTS SENT THE FIRE IN
        TWO DIRECTIONS AT TIMES. VERY DRY WEATHER CONDITIONS
        PRECEDED THE FIRE. THE COMBINATION OF STRONG WINDS...LOW
        RELATIVE HUMIDITIES AND DRY FUELS ALLOWED THE WILDFIRE
        SPREAD RAPIDLY THROUGH THE STEEP...HEAVILY FORESTED TERRAIN.
        THE FLAMES WERE REPORTEDLY 20 TO 50 FEET IN LENGTH.  TOWNS
        WITHIN THE BURN AREA INCLUDED SALINA...WALLSTREET AND GOLD
        HILL. THE DRY CONDITIONS COUPLED WITH GUSTY WINDS RANGING
        FROM 45 TO 64 MPH PERSISTED FOR SEVERAL MORE DAYS. FIRE
        MANAGERS USED AS MANY AS 700 FIREFIGHTERS AND SUPPORT
        PERSONNEL FROM 35 AGENCIES AND SEVEN AIR TANKERS TO BATTLE
        THE WILDFIRE.  A TOTAL OF 6181 SQUARE ACRES OR
        APPROXIMATELY 10 SQUARE MILES WERE BURNED.  THE FOURMILE
        CANYON WILDFIRE WAS THE MOST DESTRUCTIVE FIRE IN COLORADO
        HISTORY IN TERMS OF THE DAMAGE TO PERSONAL PROPERTY.  IT
        DESTROYED 171 HOMES WITH AN ESTIMATED COST OF 217 MILLION
        DOLLARS.
11    IN 1910...WEST WINDS WERE SUSTAINED TO 42 MPH.
      IN 1951...A VIGOROUS CANADIAN COLD FRONT PRODUCED A DUST STORM
        ACROSS METRO DENVER.  NORTHEAST WIND GUSTS TO 43 MPH REDUCED
        THE VISIBILITY AT STAPLETON AIRPORT TO AS LOW AS 1 1/2 MILES
        FOR NEARLY 5 HOURS.  THE TEMPERATURE DROPPED 47 DEGREES IN
        8 HOURS...FROM A HIGH OF 92 DEGREES TO A LOW OF 45 DEGREES.
      IN 1967...A MICROBURST WIND GUST TO 52 MPH PRODUCED BLOWING
        DUST AND BRIEFLY REDUCED THE VISIBILITY TO 1/2 MILE AT
        STAPLETON INTERNATIONAL AIRPORT.
      IN 1974...A TRACE OF SNOW...THE FIRST OF THE SEASON...ENDED
        THE SHORTEST PERIOD WITHOUT SNOW...94 DAYS FROM JUNE 9TH
        THROUGH SEPTEMBER 10TH.  A TRACE OF SNOW ALSO FELL ON
        JUNE 8TH.
      IN 1995...STRONG POST-FRONTAL WINDS ASSOCIATED WITH A FAST
        MOVING PACIFIC COLD FRONT KNOCKED DOWN POWER POLES AND TREES
        AS IT MOVED THROUGH METRO DENVER.  NUMEROUS POWER OUTAGES
        AFFECTED NEARLY ONE THOUSAND PEOPLE IN DENVER AND JEFFERSON
        COUNTIES.  WEST WINDS GUSTED TO 34 MPH AT DENVER
        INTERNATIONAL AIRPORT.
11-12 IN 1974...POST-FRONTAL RAIN CHANGED TO SNOW OVERNIGHT FOR THE
        FIRST SNOW OF THE SEASON.  SNOWFALL TOTALED ONLY 1.8 INCHES
        AT STAPLETON INTERNATIONAL AIRPORT WHERE NORTH WINDS GUSTED
        TO 40 MPH ON THE 11TH.  HIGH TEMPERATURE OF ONLY 46 DEGREES
        ON THE 12TH SET A NEW RECORD LOW MAXIMUM FOR THE DATE.

$$



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.