Public Information Statement
Issued by NWS Denver/Boulder, CO

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NOUS45 KBOU 120859
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COZ030>051-122300-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
259 AM MDT FRI SEP 12 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.
11-12 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.
12    IN 1887...WEST WINDS TO 42 MPH WERE RECORDED IN THE CITY.
      IN 1952...A THUNDERSTORM OUTFLOW PRODUCED STRONG SOUTHEAST
        WINDS GUSTING TO 52 MPH.  SURFACE VISIBILITY AT STAPLETON
        AIRPORT WAS BRIEFLY REDUCED TO 2 MILES IN BLOWING DUST.
      IN 1963...A NEARLY STATIONARY...WHITE TORNADO NEAR BENNETT WAS
        SIGHTED FROM DENVER.  NO DAMAGE WAS REPORTED.
      IN 1989...AN EARLY SNOWFALL AND THE FIRST OF THE SEASON
        BROUGHT 2 TO 3 INCHES OF SLUSH TO METRO DENVER.  MORE SNOW
        WHITENED THE FOOTHILLS WEST OF DENVER WHERE 6 INCHES WERE
        MEASURED AT EVERGREEN.  THE SNOW FELL ON LEAF LADEN TREES...
        AND SAGGING BRANCHES ONTO POWER LINES CAUSED OUTAGES.  MUCH
        OF DENVER`S SNOW FELL DURING THE EVENING RUSH HOUR...CREATING
        TRAFFIC CHAOS.  SNOWFALL TOTALED 2.3 INCHES AT STAPLETON
        INTERNATIONAL AIRPORT WHERE THE MAXIMUM SNOW DEPTH ON THE
        GROUND WAS ONLY 1 INCH DUE TO MELTING.
      IN 1994...THUNDERSTORM MICROBURST WINDS GUSTED TO 67 MPH IN
        BOULDER.  NO DAMAGE WAS REPORTED.
      IN 2002...A SEVERE THUNDERSTORM PRODUCED HAIL AS LARGE AS
        1 INCH IN DIAMETER NEAR CASTLE ROCK.

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