Public Information Statement
Issued by NWS Denver/Boulder, CO

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NOUS45 KBOU 100045
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COZ030>051-102300-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
645 PM MDT SAT MAY 9 2015

...THIS WEEK IN METRO DENVER WEATHER HISTORY...

        MODERATE TO HEAVY BY MID-MORNING AND CONTINUED INTO THE
        EARLY EVENING.  WHILE MOST OF THE SNOW MELTED AS IT FELL...
        TOTAL PRECIPITATION FROM THE MELTED SNOW WAS 0.95 INCH.
        THIS WOULD MAKE THE ESTIMATED SNOWFALL NEARLY 10 INCHES.
      IN 1963...HIGH WINDS WERE WIDESPREAD ACROSS METRO DENVER.
        WEST WINDS GUSTED TO 63 MPH IN DENVER AT STAPLETON AIRPORT
        WITH SUSTAINED WINDS OF 35 MPH AND GUSTS TO 70 MPH IN
        DOWNTOWN BOULDER.  THE WINDS CAUSED EXTENSIVE DAMAGE TO
        BUILDINGS AND OTHER PROPERTY.  VISIBILITY WAS BRIEFLY
        REDUCED TO 1/2 MILE IN BLOWING DUST AT STAPLETON AIRPORT.
      IN 1998...ANOTHER SPRING STORM BROUGHT HEAVY SNOW TO THE
        FOOTHILLS.  THIRTY TO 40 VEHICLES WERE INVOLVED IN
        ACCIDENTS ALONG I-70 NEAR GEORGETOWN.  THE COMBINATION
        OF POOR VISIBILITIES...SLICK ROADS...AND CARELESS DRIVERS
        LED TO THE MULTI-CAR PILEUPS.  ONLY MINOR INJURIES WERE
        REPORTED.  THE ACCIDENTS FORCED THE CLOSURE OF ALL OF
        I-70`S EASTBOUND LANES.  SNOWFALL TOTALS INCLUDED 12
        INCHES AT GENESEE AND 10 INCHES AT ASPEN SPRINGS...CHIEF
        HOSA...GEORGETOWN...NEAR MORRISON...AND ON NORTH TURKEY
        CREEK.  ONLY 0.1 INCH OF SNOW FELL AT THE SITE OF THE
        FORMER STAPLETON INTERNATIONAL AIRPORT.  EAST WINDS
        GUSTED TO 30 MPH AT DENVER INTERNATIONAL AIRPORT.
      IN 2002...UNSEASONABLE WARM WEATHER RESULTED IN TWO RECORDS
        BEING BROKEN.  THE HIGH TEMPERATURE OF 84 DEGREES WAS A
        RECORD MAXIMUM FOR THE DATE.  THE LOW TEMPERATURE OF 57
        DEGREES WAS A RECORD HIGH MINIMUM FOR THE DATE.
15-16 IN 1900...HEAVY RAINFALL TOTALED 2.33 INCHES.  A TRACE OF
        SNOW WAS MIXED WITH THE RAIN AT TIMES.
      IN 1950...THUNDERSTORMS AND HEAVY RAIN BEHIND A COLD FRONT
        PRODUCED 2.13 INCHES OF RAIN IN 24 HOURS AT STAPLETON
        AIRPORT.
      IN 2003...A FAST MOVING PACIFIC STORM SYSTEM MOVED ACROSS
        COLORADO ALLOWING STRONG WINDS TO DEVELOP OVER THE EASTERN
        FOOTHILLS AND METRO DENVER.  NORTHWEST WINDS GUSTED TO 59
        MPH AT DENVER INTERNATIONAL AIRPORT LATE IN THE EVENING OF
        THE 15TH.
15-17 IN 1922...HEAVY SNOWFALL TOTALED 9.0 INCHES IN DOWNTOWN
        DENVER.  MOST OF THE SNOW...6.0 INCHES...FELL ON THE 16TH.
        THIS WAS THE THIRD MAJOR SNOW STORM IN A WEEK.  NORTHWEST
        WINDS WERE SUSTAINED TO 43 MPH WITH GUSTS TO 47 MPH ON THE
        15TH.
16    IN 1960...A WIND STORM STRUCK ALL OF METRO DENVER.  ESTIMATED
        WIND GUSTS UP TO 80 MPH WERE REGISTERED IN BOULDER.  AT
        STAPLETON AIRPORT SUSTAINED WEST-NORTHWEST WINDS OVER
        50 MPH WITH GUSTS AS HIGH AS 70 MPH PRODUCED SOME BLOWING
        DUST.  THE HIGH WINDS DAMAGED BUILDINGS...POWER AND TELEPHONE
        LINES...AND SIGNS.  FIVE PEOPLE WERE INJURED IN METRO DENVER
        AS A RESULT OF THE WIND STORM.  BLOWING DUST REDUCED
        VISIBILITY AT TIMES.  THE WINDS WERE STRONG AND GUSTY FOR
        MOST OF THE DAY.
16-17 IN 1944...HEAVY SNOWFALL TOTALED 7.5 INCHES IN DOWNTOWN
        DENVER.  NORTHWEST WINDS WERE SUSTAINED TO 18 MPH ON
        THE 16TH.
16-18 IN 2009...A POTENT SPRING STORM BROUGHT HEAVY SNOW TO LOCATIONS
        IN AND NEAR THE FRONT RANGE FOOTHILLS.  A DEEP EASTERLY
        UPSLOPE PRODUCED NEARLY 5 FEET OF SNOW IN PARTS OF THE
        FOOTHILLS.  THE HEAVY SNOW RESULTED IN THE CLOSURE OF
        INTERSTATE 70...FROM GOLDEN WEST TO VAIL...FOR APPROXIMATELY
        16 HOURS.  THE HEAVY SNOW SNAPPED POWER LINES IN EVERGREEN
        AND NEDERLAND.  THE ENSUING OUTAGES AFFECTED 14200
        RESIDENTS.
        IN THE FRONT RANGE FOOTHILLS...STORM TOTALS INCLUDED:  56
        INCHES...3 MILES SOUTH OF ROLLINSVILLE; 54 INCHES...3 MILES
        SOUTHEAST OF PINECLIFFE...43 INCHES AT ASPEN SPRINGS...42
        INCHES AT EVERGREEN...38 INCHES NEAR CONIFER; 37 INCHES AT
        ST. MARY`S GLACIER...AND 34 INCHES NEAR NEDERLAND.
        ALONG THE URBAN CORRIDOR AND PALMER DIVIDE...THE HEAVIEST
        SNOW OCCURRED ABOVE 5500 FEET ON THE 17TH.  STORM TOTALS
        INCLUDED:  22 INCHES...8.5 MILES SOUTHWEST OF FRANKTOWN; 18
        INCHES...10 MILES SOUTH-SOUTHEAST OF BUCKLEY AIR FORCE BASE;
        17 INCHES NEAR CHERRY CREEK AND 7 MILES SOUTH OF SEDALIA...
        16 INCHES...6.5 MILES SOUTHWEST OF CASTLE ROCK; 15 INCHES
        NEAR BEVERLY HILLS; 12 INCHES NEAR HIGHLANDS RANCH AND
        LAFAYETTE...WITH 11 INCHES IN BROOMFIELD.  ELSEWHERE STORM
        TOTALS RANGED FROM 4 TO 10 INCHES.  OFFICIALLY...ONLY 2.6
        INCHES OF SNOW WAS OBSERVED AT DENVER INTERNATIONAL AIRPORT.
        THE 24-HR PRECIPITATION FOR THE DAY HOWEVER WAS 1.16 INCHES...
        WHICH ESTABLISHED A NEW RECORD FOR APRTIL 17TH.
8-10  IN 1979...4.3 INCHES OF SNOW FELL AT STAPLETON INTERNATIONAL
        AIRPORT WHERE NORTHWEST WINDS GUSTED TO 30 MPH ON THE 8TH.
        MOST OF THE SNOWFALL...2.3 INCHES...OCCURRED ON THE 9TH.
        HIGH TEMPERATURE OF ONLY 35 DEGREES ON THE 9TH EQUALED THE
        RECORD LOW MAXIMUM FOR THE DATE.
9-10  IN 1889...HEAVY RAINFALL TOTALED 2.15 INCHES IN DOWNTOWN
        DENVER.  THE COLD RAIN WAS MIXED WITH SNOW AT TIMES
        OVERNIGHT.  TEMPERATURES ON THE 10TH RANGED FROM A
        HIGH OF 38 DEGREES TO A LOW OF 32 DEGREES WITH NORTH
        WINDS SUSTAINED TO 22 MPH.
      IN 2003...A LATE SPRING SNOWSTORM HAMMERED THE MOUNTAINS...
        EASTERN FOOTHILLS...AND URBAN CORRIDOR.  THE HEAVIEST
        SNOWFALL OCCURRED NORTH OF INTERSTATE 70.  THE HEAVY
        WET SNOW CAUSED DAMAGE TO TREES THROUGHOUT METRO DENVER
        AND DOWNED POWER LINES.  ABOUT 40 THOUSAND PEOPLE ALONG
        THE URBAN CORRIDOR WERE WITHOUT POWER.  STORM TOTAL
        SNOWFALL AMOUNTS INCLUDED:  11.5 INCHES IN LOUISVILLE...
        8 INCHES IN BOULDER AND BROOMFIELD; 7 INCHES IN
        THORNTON...BROOMFIELD...AT DENVER INTERNATIONAL AIRPORT...
        AND AT THE SITE OF THE FORMER STAPLETON INTERNATIONAL
        AIRPORT; AND 6 INCHES 4 MILES EAST OF DENVER.  SNOWFALL
        RANGED FROM 4 TO 9 INCHES ACROSS EXTREME SOUTHERN WELD
        COUNTY.  IN THE FOOTHILLS...15 INCHES OF SNOW FELL NEAR
        JAMESTOWN...9 INCHES AT ROLLINSVILLE AND RAWAH...WITH
        8 INCHES AT CHIEF HOSA AND ATOP LOOKOUT MOUNTAIN.
        THE SNOW WAS ACCOMPANIED BY THUNDER ON THE AFTERNOON
        OF THE 9TH AT DENVER INTERNATIONAL AIRPORT WHERE WEST
        WINDS GUSTED TO 25 MPH ON THE 9TH AND NORTH WINDS GUSTED
        TO 22 MPH ON THE 10TH.
10    IN 1875...A WINDSTORM SAND-BLASTED THE CITY FROM 10:00 AM
        UNTIL MIDNIGHT.  NORTHWEST WINDS SUSTAINED TO 60 MPH
        BROUGHT CLOUDS OF SAND...WHICH CAUSED HIGH DAMAGE TO
        UNFINISHED BUILDINGS.
      IN 1912...A VIGOROUS COLD FRONT PRODUCED STRONG NORTH WINDS
        AND RAIN.  NORTH WINDS WERE SUSTAINED TO 48 MPH WITH GUSTS
        AS HIGH AS 60 MPH.  RAINFALL TOTALED 1.10 INCH.
      IN 1935...NO PRECIPITATION OCCURRED...MAKING THIS ONE OF
        ONLY TWO DAYS WITHOUT PRECIPITATION DURING THE ENTIRE
        MONTH.  THE OTHER DAY WAS THE 21ST.  PRECIPITATION
        TOTALED 4.95 INCHES FOR THE MONTH.
      IN 1956...NORTHWEST WINDS GUSTED TO 53 MPH AT STAPLETON
        AIRPORT WHERE THE VISIBILITY WAS BRIEFLY REDUCED TO 1/2
        MILE IN BLOWING DUST.
      IN 1974...STRONG WINDS CAUSED 30 THOUSAND DOLLARS IN DAMAGE
        TO A BUILDING UNDER CONSTRUCTION IN LAKEWOOD.  MICROBURST
        WINDS GUSTED TO 46 MPH AT STAPLETON INTERNATIONAL AIRPORT.
      IN 1988...LIGHTNING STRUCK A HOUSE IN BOULDER...SETTING IT
        AFIRE.  THE HOUSE...VALUED AT 170 THOUSAND DOLLARS...WAS A
        TOTAL LOSS.
      IN 1989...GOLF BALL SIZE HAIL FELL OVER SOUTHEAST DENVER NEAR
        THE JUNCTION OF I-25 AND I-225.  HAIL TO 3/4 INCH IN
        DIAMETER FELL OVER SOUTHEAST AURORA.  ONLY 3/8 INCH HAIL
        FELL AT STAPLETON INTERNATIONAL AIRPORT.
      IN 1991...HIGH WINDS UP TO 63 MPH RAKED THE EASTERN FOOTHILLS.
        WINDS ESTIMATED TO 50 MPH TORE A ROOF FROM A HOME IN
        LAFAYETTE.  A TOWER AT JEFFERSON COUNTY STADIUM IN WEST
        METRO DENVER WAS BLOWN OVER BY THE HIGH WINDS.  NO
        INJURIES WERE REPORTED.  SOUTHEAST WINDS GUSTING TO 48 MPH
        AT STAPLETON INTERNATIONAL AIRPORT PRODUCED SOME BLOWING
        DUST.  THE TEMPERATURE CLIMBED TO A HIGH OF 86 DEGREES...
        EQUALING THE RECORD MAXIMUM FOR THE DATE.
      IN 2005...SEVERE THUNDERSTORMS PRODUCED HAIL AS LARGE AS
        2 INCHES IN DIAMETER IN AND NEAR LONGMONT.
10-11 IN 1918...POST-FRONTAL SNOWFALL TOTALED 4.7 INCHES IN DOWNTOWN
        DENVER.  NORTHWEST WINDS GUSTED TO 19 MPH ON THE 10TH.
      IN 1923...WINDS WERE STRONG AND GUSTY ON BOTH DAYS.  NORTHWEST
        WINDS WERE SUSTAINED TO 40 MPH WITH GUSTS TO 44 MPH ON THE
        10TH.  NORTH WINDS WERE SUSTAINED TO 39 MPH WITH GUSTS TO
        46 MPH BEHIND AN APPARENT COLD FRONT ON THE 11TH.
10-12 IN 2011...A SPRING SNOWSTORM BROUGHT HEAVY SNOW TO THE FRONT
        RANGE FOOTHILLS AND PALMER DIVIDE. STORM TOTALS INCLUDED:
        18 INCHES...4 MILES SOUTH-SOUTHEAST OF PINECLIFFE; 16 INCHES
        IN COAL CREEK CANYON; 15 INCHES...4 MILES WEST-SOUTHWEST OF
        ELDORADO SPRINGS; 13 INCHES AT GOLD HILL...12 INCHES...4
        MILES WEST-SOUTHWEST OF CONIFER AND 4 MILES NORTHWEST OF
        ELIZABETH; 11.5 INCHES...6 MILES SOUTHWEST OF EVERGREEN AND
        4 MILES EAST-NORTHEAST OF NEDERLAND; 11 INCHES...3 MILES
        EAST OF JAMESTOWN AND 10.5 INCHES...3 MILES EAST OF
        FRANKTOWN AND 3 MILES SOUTH OF GOLDEN AND 10 INCHES...10
        MILES NORTH OF ELIZABETH. AT DENVER INTERNATIONAL AIRPORT...
        1 INCH OF SNOWFALL WAS OBSERVED.
11    IN 1879...AN APPARENT COLD FRONT DURING THE AFTERNOON PRODUCED
        SUSTAINED NORTH WINDS AS HIGH AS 60 MPH AND GREAT CLOUDS OF
        BLOWING DUST.  THE DUST FILLED THE AIR UNTIL THE THUNDERSTORM
        RAIN BEGAN...WHICH PRODUCED 1.46 INCHES OF RAINFALL.  THE RAIN
        ENDED DURING THE EVENING.
      IN 1900...SOUTHWEST WINDS WERE SUSTAINED TO 40 MPH WITH GUSTS
        TO 46 MPH.
      IN 1958...A MICROBURST CAUSED A BRIEF WIND GUST TO 55 MPH AT
        STAPLETON AIRPORT.
      IN 1963...SOUTH-SOUTHWEST WINDS GUSTED TO 48 MPH AT STAPLETON
        AIRPORT.  WINDS MAY HAVE BEEN STRONGER OVER WEST DENVER
        WHERE SOME BUILDINGS WERE DAMAGED.
      IN 1998...LARGE HAIL FELL OVER SOUTH METRO DENVER.  HAIL
        AS LARGE AS 1 1/4 INCHES IN DIAMETER WAS MEASURED IN
        PARKER WITH 1 INCH HAIL RECORDED IN LITTLETON AND 4 MILES
        SOUTH OF LAKEWOOD IN JEFFERSON COUNTY.  HAIL TO 3/4 INCH
        DIAMETER WAS MEASURED IN DOUGLAS COUNTY...11 MILES WEST-
        NORTHWEST OF PARKER.
11-12 IN 2014...A STRONG STORM SYSTEM MOVED FROM SOUTHWEST COLORADO
        AND PRODUCED HEAVY SNOW IN AND NEAR THE FRONT RANGE FOOTHILLS
        AND METRO DENVER.  THE SNOW WAS HEAVIEST IN THE FOOTHILLS
        WHERE UP TO 2 1/2 FEET OF SNOW WAS OBSERVED. IN THE FOOTHILLS...
        STORM TOTALS INCLUDED: 30 INCHES NEAR PINECLIFFE; 29 INCHES...
        8 MILES NORTHEAST OF FOUR CORNERS; 28 INCHES NEAR PINGREE
        PARK; 27 INCHES NEAR ALLENSPARK; 20.5 INCHES NEAR IDAHO
        SPRINGS; 19.5 INCHES AT GOLD HILL; 19 INCHES NEAR GENESEE; 18
        INCHES NEAR BLACKHAWK; 17 INCHES AT ASPEN SPRINGS; 16.5 INCHES
        NEAR WARD; 13.5 INCHES AT BERGEN PARK; WITH 11 INCHES AT
        EVERGREEN.  ALONG URBAN CORRIDOR AND PALMER DIVIDE...STORM
        TOTALS INCLUDED: 10.5 INCHES AT ELDORADO SPRINGS; 10 INCHES AT
        KEN CARYL; 9 INCHES AT SUPERIOR; 8 INCHES NEAR MORRISON; 7.5
        INCHES IN BROOMFIELD AND HIGHLANDS RANCH; 7 INCHES IN DENVER...
        NEAR FRANKTOWN...GOLDEN...LAKEWOOD AND HIGHLANDS RANCH; 6
        INCHES...5 MILES NORTHEAST OF WESTMINSTER...7 MILES SOUTH OF
        LYONS AND NEAR PARKER; WITH 5.5 INCHES AT AURORA. AT DENVER
        INTERNATIONAL AIRPORT...1.1 INCHES OF SNOWFALL WAS OBSERVED...
        ALONG WITH 0.9 INCHES OF WATER.
12    IN 1875...TWO FOREST FIRES ON THE EASTERN SLOPE OF THE
        FOOTHILLS WERE VISIBLE FROM THE CITY.
      IN 1904...NORTH WINDS WERE SUSTAINED TO 40 MPH WITH GUSTS
        TO 48 MPH.
      IN 1950...BRILLIANT AND COMPLETE PRIMARY AND SECONDARY
        RAINBOWS ARCHING ACROSS THE SKY WERE OBSERVED FROM
        STAPLETON AIRPORT.
      IN 1951...A WIND GUST TO 51 MPH WAS RECORDED AT STAPLETON
        AIRPORT.
      IN 1984...WINDS GUSTED TO 69 MPH IN BOULDER.  NORTHWEST WINDS
        GUSTED TO 47 MPH AT STAPLETON INTERNATIONAL AIRPORT.
      IN 1987...A SMALL WEAK TORNADO TOUCHED DOWN FOR ABOUT 2
        MINUTES IN SOUTHEAST DENVER.  THE TWISTER HIT A CAR
        DEALERSHIP...BLOWING ABOUT A DOZEN WINDOWS OUT OF CARS AND
        SHATTERING FOUR SKYLIGHTS ON THE BUILDING.  SOME TIN
        ROOFING WAS BLOWN OFF A PATIO A BLOCK AND A HALF AWAY.  THE
        TORNADO ALSO DOWNED A POWER POLE.  DAMAGE AT THE DEALERSHIP
        WAS ESTIMATED AT 10 THOUSAND DOLLARS.  A MAN WAS SLIGHTLY
        INJURED BY LIGHTNING IN NORTHWEST AURORA.
      IN 1995...SEVERAL FUNNEL CLOUDS WERE SIGHTED NEAR PARKER.
        ONE OF THE FUNNELS PRODUCED A SHORT-LIVED DEBRIS CLOUD
        ON THE GROUND IN AN OPEN FIELD.  NO DAMAGE WAS REPORTED.
12-13 IN 1907...THE TEMPERATURE WARMED TO A HIGH OF 73 DEGREES ON
        THE 12TH...BEFORE A COLD FRONT PRODUCED A THUNDERSTORM...
        NORTHEAST WINDS SUSTAINED TO 40 MPH...AND RAIN CHANGING TO
        LIGHT SNOW OVERNIGHT.  SNOWFALL TOTALED ONLY 2 INCHES...BUT
        THE HIGH TEMPERATURE ON THE 13TH WAS ONLY 39 DEGREES.
      IN 1961...A STORM THAT COVERED METRO DENVER WITH RAIN AND SNOW
        STARTED AS THUNDERSTORMS ON THE EVENING OF THE 12TH.  HAIL
        TO 1 1/2 INCHES IN DIAMETER WAS REPORTED 10 MILES NORTHWEST
        OF STAPLETON AIRPORT.  RAIN CONTINUED OVERNIGHT AND CHANGED
        TO SNOW ON THE 13TH.  SNOWFALL TOTALED 6.4 INCHES AND
        PRECIPITATION (RAIN AND MELTED SNOW) 1.96 INCHES AT
        STAPLETON AIRPORT WHERE NORTH WINDS GUSTED TO 39 MPH.  THE
        RAIN AND HEAVY WET SNOW CAUSED ICING DAMAGE TO UTILITY
        LINES.  HEAVY SNOW OCCURRED IN THE FOOTHILLS.
      IN 1982...A MAJOR STORM DUMPED 1.50 TO 3.50 INCHES OF RAIN
        ACROSS NORTHEAST COLORADO AND DEPOSITED PRODIGIOUS AMOUNTS
        OF SNOW IN THE FOOTHILLS.  COAL CREEK CANYON SOUTHWEST OF
        BOULDER WAS BURIED UNDER 46 INCHES OF SNOW WITH 39 INCHES
        AT NEDERLAND.  THE HEAVY WET SNOW DOWNED MANY POWERLINES IN
        THE FOOTHILLS.  IN THORNTON...THE ROOF OF A SCHOOL WAS
        DAMAGED BY WATER FROM THE HEAVY RAIN.  AT STAPLETON
        INTERNATIONAL AIRPORT...1.49 INCHES OF RAIN WERE MEASURED
        OVER THE TWO DAY PERIOD.  THE HEAVY RAIN ENDED A SEVERE AND
        PROLONGED DROUGHT.
      IN 2004...A WINTER STORM PRODUCED HEAVY SNOW IN EXCESS OF A
        FOOT IN THE FOOTHILLS ABOVE 6 THOUSAND FEET WHILE HEAVY
        RAIN FELL ACROSS THE CITY.  THE HEAVIEST SNOW OCCURRED IN
        THE HIGH COUNTRY OF BOULDER COUNTY.  STORM TOTAL SNOWFALL
        WAS 14.5 INCHES NEAR JAMESTOWN.  RAINFALL TOTALED 0.81 INCH
        AT DENVER INTERNATIONAL AIRPORT WITH 0.94 INCH RECORDED AT
        DENVER STAPLETON.  A TRACE OF SNOW WAS RECORDED AT BOTH
        LOCATIONS.  EAST WINDS GUSTED TO 24 MPH AT DENVER
        INTERNATIONAL AIRPORT ON THE 12TH.
13    IN 1905...A THUNDERSTORM PRODUCED HAIL DURING THE LATE
        AFTERNOON.  PRECIPITATION TOTALED 0.57 INCH.
13-14 IN 1912...HEAVY SNOWFALL TOTALED 12.4 INCHES OVER THE CITY.
        MOST OF THE SNOW...9.9 INCHES...FELL ON THE 13TH...WHICH WAS
        THE GREATEST 24 HOUR SNOWFALL IN MAY AT THE TIME.  THIS
        WAS THE LAST SNOWFALL OF THE SEASON.  THE LOW TEMPERATURE
        DIPPED TO 27 DEGREES ON THE MORNING OF THE 14TH.
      IN 1989...A SPRING STORM BROUGHT HEAVY RAIN AND SNOW TO THE
        FOOTHILLS.  METRO DENVER WAS SOAKED WITH 1 TO 2 INCHES
        OF RAIN.  RAINFALL TOTALED 1.26 INCHES AT STAPLETON
        INTERNATIONAL AIRPORT.  IN THE FOOTHILLS...ECHO LAKE
        RECEIVED 20 INCHES OF SNOW.  A 30-TON BOULDER SLID ONTO
        I-70 EAST OF THE EISENHOWER TUNNEL...CLOSING THE FREEWAY
        FOR 2 HOURS.
14    IN 1910...A THUNDERSTORM PRODUCED STRONG WINDS DURING THE
        AFTERNOON.  NORTHWEST WINDS WERE SUSTAINED TO 42 MPH.
      IN 1913...LIGHT MOIST SNOW AND LIGHT HAIL FELL DURING SHORT
        INTERVALS...ALTHOUGH NO THUNDER WAS HEARD.  THE TRACE OF
        SNOWFALL WAS THE ONLY SNOW OF THE MONTH.  PRECIPITATION...
        MOSTLY RAIN...TOTALED 0.44 INCH.
      IN 1984...A PILOT REPORTED A TORNADO 16 MILES EAST OF
        STAPLETON INTERNATIONAL AIRPORT.  NO DAMAGE WAS REPORTED.
        A THUNDERSTORM PRODUCED A 58 MPH WIND GUST IN BRIGHTON.
        THUNDERSTORM WINDS GUSTED TO 48 MPH AT STAPLETON
        INTERNATIONAL AIRPORT.
      IN 1989...LIGHTNING STRUCK A HOME IN EVERGREEN...SETTING IT
        AFIRE.
      IN 1992...STRONG THUNDERSTORM WINDS OF UNKNOWN VELOCITY...
        KNOCKED OVER AND DAMAGED THE INFIELD TOTE BOARD AT
        ARAPAHOE PARK RACETRACK JUST SOUTHEAST OF AURORA.
        DAMAGE WAS ESTIMATED AT 200 THOUSAND DOLLARS.  NO
        INJURIES WERE REPORTED.  LIGHTNING STARTED TWO HOUSE
        FIRES...CAUSING 35 HUNDRED DOLLARS IN DAMAGE IN ADAMS
        COUNTY JUST 9 MILES NORTH-NORTHWEST OF DENVER.
      IN 1994...A SUDDEN WIND GUST...ESTIMATED AT 40 MPH...BLEW A
        PORTION OF THE ROOF OFF A SHOPPING CENTER IN LAFAYETTE.
        THE ROOF ALSO DAMAGED TWO PARKED CARS IN AN ADJACENT LOT.
      IN 2001...A CONSTRUCTION WORKER IN CASTLE ROCK RECEIVED MINOR
        INJURIES WHEN LIGHTNING STRUCK CLOSE-BY.
      IN 2002...A MICROBURST WIND GUST TO 53 MPH WAS RECORDED AT
        DENVER INTERNATIONAL AIRPORT.
      IN 2007...SEVERE THUNDERSTORMS PRODUCING LARGE HAIL...VERY
        HEAVY RAIN...AND TORNADOES IMPACTED THE URBAN CORRIDOR AND
        ADJACENT PLAINS.  HEAVY RAIN ASSOCIATED WITH A SEVERE
        THUNDERSTORM CAUSED FLOODING ALONG A SMALL TRIBUTARY
        DRAINING INTO THE SOUTH PLATTE RIVER.  THE INCIDENT TOOK
        PLACE AT 13TH AND DECATUR ST....NEAR INVESCO FIELD.  THE
        FLOODWATERS INUNDATED THE BIKE TRAIL ADJACENT TO THE CREEK.
        A WOMAN WITH HER CHILD SOUGHT REFUGE UNDER A BRIDGE AND
        BECAME TRAPPED BY THE HIGH WATER.  THE WOMAN SLIPPED AND
        THE STROLLER CONTAINING THE CHILD WAS SWEPT INTO THE SWIFT
        CURRENT.  THE CHILD DROWNED.  RAINFALL TOTALED 0.42 INCHES
        AT DENVER INTERNATIONAL AIRPORT.  ELSEWHERE...GOLFBALL HAIL
        WAS REPORTED NEAR HUDSON.  HAIL...UP TO ONE INCH IN
        DIAMETER...WAS OBSERVED IN BOULDER AND LYONS.
        THUNDERSTORM WIND GUSTS ESTIMATED TO 70 MPH WERE REPORTED
        NEAR BUCKLEY AIR FORCE BASE...WITH A PEAK WIND GUST TO 37
        MPH OBSERVED AT DENVER INTERNATIONAL AIRPORT.  A SMALL
        TORNADO TOUCHED DOWN NEAR FT. LUPTON BUT DID NO DAMAGE.
14-15 IN 1977...HIGH WINDS UP TO 100 MPH FELLED HUNDREDS OF TREES IN
        GILPIN COUNTY AND CAUSED EXTENSIVE DAMAGE TO TELEPHONE AND
        POWER LINES.  LUMBER AND STEEL TANKS WERE BLOWN AROUND IN
        BOULDER CANYON.  WEST WINDS GUSTED TO 46 MPH AT STAPLETON
        INTERNATIONAL AIRPORT ON THE 15TH.
14-18 IN 1996...A PERIOD OF UNUSUALLY WARM WEATHER RESULTED IN
        4 RECORD MAXIMUM TEMPERATURES IN 5 DAYS.  THE RECORD HIGH
        TEMPERATURES WERE 87 DEGREES ON THE 14TH...89 DEGREES ON
        THE 15TH...AND 93 DEGREES ON BOTH THE 16TH AND 18TH.  THE
        TEMPERATURE CLIMBED TO ONLY 81 DEGREES ON THE 17TH WHICH
        WAS NOT A RECORD.
15    IN 1894...SOUTHWEST WINDS WERE SUSTAINED TO 38 MPH WITH GUSTS
        TO 50 MPH.
      IN 1910...AN APPARENT COLD FRONT PRODUCED SUSTAINED NORTHEAST
        WINDS TO 48 MPH.
      IN 1986...A THUNDERSTORM DUMPED AN INCH OF RAIN IN AN HOUR
        OVER THE EASTERN PART OF AURORA.  TOTAL RAINFALL FROM THE
        STORM WAS 1.62 INCHES.
      IN 1989...A 47 YEAR OLD MAN...A LAKEWOOD POLICE OFFICER...WAS
        STRUCK AND INJURED BY LIGHTNING.  SMALL HAIL PILED UP 3
        TO 4 INCHES DEEP NEAR GOLDEN.  THERE WAS REPORTED STREET
        FLOODING FROM HEAVY THUNDERSTORM RAINS OVER WESTERN METRO
        DENVER.  RAINFALL TOTALED 0.76 INCH AT STAPLETON
        INTERNATIONAL AIRPORT.
      IN 1990...A THUNDERSTORM PRODUCED A WIND GUST TO 69 MPH AT
        JEFFERSON COUNTY AIRPORT IN BROOMFIELD.  THUNDERSTORM WINDS
        GUSTING TO 49 MPH AT STAPLETON INTERNATIONAL AIRPORT
        PRODUCED SOME BLOWING DUST.
      IN 1991...A FUNNEL CLOUD WAS SIGHTED NEAR MORRISON.  LATER...
        HAIL UP TO 2 INCHES DEEP COVERED U.S. HIGHWAY 285 AT SOUTH
        TURKEY CREEK ROAD IN WEST METRO DENVER.  BASEBALL SIZE HAIL
        WAS REPORTED ON THE EAST SIDE OF LITTLETON.  DIME SIZE HAIL
        WAS REPORTED IN BOULDER.
      IN 1993...LIGHTNING STARTED A FIRE WHICH DAMAGED A HOME IN
        BOULDER.  NO ONE WAS INJURED.
      IN 1997...A WIND GUST TO 58 MPH WAS RECORDED AT THE SITE
        OF THE FORMER STAPLETON INTERNATIONAL AIRPORT.  A STREET
        SIGN WAS BLOWN DOWN AT THE HAVANA STREET EXIT ALONG I-70.
      IN 1999...LIGHTNING IGNITED A SMALL FIRE IN A 3-STORY
        STRUCTURE IN SUNSHINE CANYON ABOVE BOULDER.  THE FIRE
        WAS QUICKLY EXTINGUISHED AND CAUSED ONLY MINOR DAMAGE.
      IN 2003...THUNDERSTORMS PRODUCED VERY HEAVY RAINFALL AND
        LOCALIZED FLASH FLOODING IN THE FOOTHILLS OF CENTRAL
        BOULDER COUNTY.  RAINFALL RANGED FROM 1.5 TO 2.5 INCHES
        IN LESS THAN 2 HOURS.  WATER RANGING IN DEPTH FROM 6 TO 9
        INCHES COVERED STATE HIGHWAY 119 IN BOULDER CANYON.  DIRT
        AND ROCKS ALSO WASHED OVER THE ROADWAY.  SOME BASEMENTS
        WERE FLOODED IN THE SUGARLOAF AREA.  ROCKSLIDES WERE ALSO
        REPORTED AT BOULDER FALLS...LEFTHAND CANYON...AND FOURMILE
        CANYON.
15-16 IN 1957...HEAVY SNOWFALL TOTALED 8.8 INCHES AT STAPLETON
        AIRPORT. THE GREATEST AMOUNT ON THE GROUND WAS 3 INCHES.
      IN 1986...A SPRING STORM DUMPED 1 TO 2 INCHES OF RAIN OVER
        METRO DENVER...BUT 2.71 INCHES FELL AT BUCKLEY FIELD IN
        AURORA.  RAINFALL ONLY TOTALED 0.84 INCH AT STAPLETON
        INTERNATIONAL AIRPORT.  SNOW FELL IN THE FOOTHILLS WITH
        7 INCHES RECORDED IN COAL CREEK CANYON SOUTHWEST OF
        BOULDER.
16    IN 1875...A HEAVY HAIL STORM TURNED INTO HEAVY RAIN DURING
        THE AFTERNOON.  RAINFALL TOTALED 0.86 INCH IN JUST 37
        MINUTES...WHILE THE TEMPERATURE DROPPED 22 DEGREES IN
        22 MINUTES.  PRECIPITATION TOTALED 0.90 INCH.
      IN 1894...WEST WINDS WERE SUSTAINED TO 48 MPH WITH GUSTS
        TO 56 MPH.
      IN 1949...A TORNADO WAS OBSERVED FOR 16 MINUTES...20 MILES TO
        THE SOUTHEAST OF STAPLETON AIRPORT.  THE TORNADO MOVED 5
        MILES TO THE NORTHEAST BEFORE DISSIPATING.  NO DAMAGE WAS
        REPORTED.
      IN 1963...INTENSE LIGHTNING STARTED SEVERAL FOREST FIRES IN
        THE FOOTHILLS SOUTHWEST OF DENVER NEAR DECKERS AND
        CHEESEMAN LAKE.  LITTLE PRECIPITATION FELL FROM THE STORMS
        TO ALLEVIATE THE UNUSUAL DRY CONDITIONS SO EARLY IN THE
        SEASON.
      IN 1978...THUNDERSTORM WINDS CAUSED DAMAGE IN SOUTHEAST
        AURORA.  WINDS OF 60 TO 80 MPH BLEW DOWN NUMEROUS FENCES AND
        DAMAGED SEVERAL HOMES UNDER CONSTRUCTION.  HIGH WINDS TORE
        DOCKS LOOSE AT CHERRY CREEK RESERVOIR...SINKING 3 OR 4 BOATS
        AND DAMAGING ABOUT 15 OTHERS.  AT STAPLETON INTERNATIONAL
        AIRPORT WHERE WINDS GUSTED TO 60 MPH...A 727 JET SUFFERED
        15 HUNDRED DOLLARS DAMAGE WHEN WIND TOPPLED A RUNWAY LIGHT
        ONTO IT.  THE PUBLIC REPORTED AN UNCONFIRMED TORNADO 7 MILES
        SOUTH-SOUTHWEST OF STAPLETON INTERNATIONAL AIRPORT.
      IN 1990...A LINE OF THUNDERSTORMS MOVING ACROSS METRO DENVER
        UPROOTED A LARGE ASH TREE...WHICH FELL AND BLOCKED THE
        OUTSIDE DOORS TO A DENVER ELEMENTARY SCHOOL...BRIEFLY
        TRAPPING THE STUDENTS INSIDE.  THUNDERSTORM WIND GUSTS TO
        69 MPH WERE REPORTED AT JEFFERSON COUNTY AIRPORT.
        NORTHWEST WINDS GUSTED TO 44 MPH AT STAPLETON INTERNATIONAL
        AIRPORT.
      IN 1991...TWO TORNADOES TOUCHED DOWN BRIEFLY IN CASTLE ROCK...
        BUT NO INJURIES OR DAMAGE WERE RECORDED.  HEAVY
        THUNDERSTORM RAINS OF 0.50 TO 1.10 INCHES IN A COUPLE OF
        HOURS CAUSED LENA GULCH NEAR GOLDEN TO FLOOD.  NO DAMAGE
        WAS REPORTED.
      IN 1996...DRY MICROBURST WINDS OF UNKNOWN STRENGTH OVERTURNED
        A TRAILER AND DAMAGED STORAGE SHEDS IN STRASBURG EAST OF
        DENVER.
16-17 IN 1981...A HEAVY RAIN STORM DUMPED 1 TO 2 1/2 INCHES OF RAIN
        ACROSS METRO DENVER.  RAINFALL TOTALED 1.27 INCHES AT
        STAPLETON INTERNATIONAL AIRPORT WHERE NORTH WINDS GUSTED
        TO 38 MPH ON 17TH.
      IN 1983...A VERY STRONG LATE SPRING STORM DUMPED HEAVY SNOW
        OVER THE FRONT RANGE.  STRONG WINDS WITH THE STORM PRODUCED
        BLIZZARD CONDITIONS AT TIMES.  SUSTAINED WINDS WERE 20 TO
        40 MPH WITH A PEAK GUST TO 55 MPH AT STAPLETON INTERNATIONAL
        AIRPORT.  THE FOOTHILLS RECEIVED 1 TO 2 FEET OF SNOW
        WITH 4 TO 12 INCHES ALONG THE FOOTHILLS.  HOWLING WINDS
        WHIPPED THE SNOW INTO DRIFTS SEVERAL FEET DEEP...CLOSING
        SCHOOLS AND HIGHWAYS.  STAPLETON INTERNATIONAL AIRPORT WAS
        FORCED TO REDUCE FLIGHT OPERATIONS...CLOSING 2 OF 4 RUNWAYS
        AND STRANDING HUNDREDS OF TRAVELERS.  MOST OF THE DAMAGE
        AND INCONVENIENCE CAUSED BY THE STORM WAS IN POWER OUTAGES...
        WHICH OCCURRED WHEN WIND AND HEAVY WET SNOW CAUSED HUNDREDS
        OF POWER POLES TO SNAP AND TOPPLE.  ABOUT 20 SQUARE MILES
        OF DENVER WERE BLACKED OUT.  PRECIPITATION FROM THE STORM
        TOTALED 1 TO 3 INCHES.  AT STAPLETON INTERNATIONAL AIRPORT...
        SNOWFALL TOTALED 7.1 INCHES WITH A MAXIMUM SNOW DEPTH ON
        THE GROUND OF ONLY 2 INCHES DUE TO MELTING.  THE HIGH
        TEMPERATURE OF 40 DEGREES ON THE 17TH WAS A RECORD LOW
        MAXIMUM FOR THE DATE.  DUE TO THE HEAVY MOISTURE CONTENT
        OF THE STORM...WIDESPREAD STREET FLOODING OCCURRED ON THE
        18TH WHEN MUCH OF THE SNOW MELTED UNDER THE WARM MAY SUN
        AND TEMPERATURES CLIMBED TO A HIGH OF 57 DEGREES.
      IN 1995...SIGNIFICANT MOISTURE AND UPSLOPE FLOW CAUSED
        FLOODING ACROSS METRO DENVER.  MODERATE TO HEAVY RAINS...
        WHICH BEGAN ON THE EVENING OF THE 16TH...DEVELOPED IN THE
        FOOTHILLS AND SPREAD EASTWARD OVER METRO DENVER THROUGHOUT
        THE NIGHT.  THE HEAVY RAINS BROUGHT MANY CREEKS AND SMALL
        STREAMS TO BANKFULL OR SLIGHTLY OVER.  LOCATIONS ALONG THE
        FOOTHILLS RECEIVED BETWEEN 3 AND 4 INCHES OF RAINFALL FROM
        THE STORM.  BOULDER RECEIVED 3.60 INCHES OF RAINFALL FOR
        THE 24-HOUR PERIOD...CAUSING MINOR STREET FLOODING NEAR
        SMALL STREAMS.  TO THE NORTHWEST OF BOULDER...A BRIDGE WHICH
        CROSSED FOURMILE CREEK WAS WASHED OUT.  NUMEROUS ROCK AND
        MUDSLIDES OCCURRED IN FOOTHILLS CANYONS...CLOSING PORTIONS
        OF U.S. HIGHWAYS 6 AND 40 AND STATE HIGHWAY 119 FOR A FEW
        HOURS AT A TIME.  ROCKS WERE PILED 6 FEET DEEP ON A STRETCH
        OF STATE HIGHWAY 119 ALONG WITH BOULDERS AS LARGE AS CARS ON
        U.S. HIGHWAY 6.  A PARKING LOT NEAR A CREEK IN GOLDEN CAVED
        IN LEAVING A HOLE THE SIZE OF AN 18-WHEELER.  RUSHING WATER
        WASHED OUT A 50-FOOT STRETCH OF A ROAD IN WESTMINSTER.
        RAINFALL TOTALED 1.75 INCHES AT DENVER INTERNATIONAL
        AIRPORT...BUT ONLY 1.42 INCHES AT THE SITE OF THE FORMER
        STAPLETON INTERNATIONAL AIRPORT.

$$


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