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NOUS45 KBOU 180859
PNSBOU
COZ030>051-182300-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
259 AM MDT THU JUN 18 2026
..TODAY IN METRO DENVER WEATHER HISTORY
17-18 IN 1964...FROM THE 17TH TO THE 18TH...HIGH WINDS AT SPEEDS OF
50 TO 60 MPH WITH GUSTS AS HIGH AS 75 MPH CAUSED DAMAGE TO
HOMES...POWER LINES...AND TREES IN BOULDER. NON-CONVECTIVE
WEST WINDS GUSTING TO 46 MPH CAUSED SOME BLOWING DUST AT
STAPLETON INTERNATIONAL AIRPORT ON THE 17TH.
18 IN 1875...A WINDSTORM PRODUCED SUSTAINED WINDS TO 45 MPH
DURING THE MORNING HOURS. NUMEROUS FOREST FIRES ALONG
THE BASE OF THE MOUNTAINS WERE VISIBLE FROM THE CITY.
IN 1886...NORTHWEST WINDS SUSTAINED TO 40 MPH WERE THE
STRONGEST OF THE MONTH THAT YEAR.
IN 1987...SEVERE THUNDERSTORMS PRODUCED LIGHTNING...LARGE HAIL...
A TORNADO...HEAVY RAIN...AND STRONG WINDS ACROSS METRO DENVER.
RAINFALL TOTALED 2.50 INCHES IN AN HOUR IN WHEAT RIDGE...
CAUSING MINOR FLOODING. I-25 WAS FLOODED IN NORTH-CENTRAL
DENVER...SNARLING TRAFFIC. HAIL 7/8 INCH IN DIAMETER FELL IN
LOUISVILLE WITH 1 1/2 INCH HAIL NEAR GOLDEN AND 1 TO 1 3/4
INCH HAIL IN AND NEAR CASTLE ROCK. A TORNADO TOUCHED DOWN
BRIEFLY IN CASTLE ROCK. NO DAMAGE WAS REPORTED. LIGHTNING
STARTED A SMALL FIRE THAT BURNED HALF A CABIN NEAR
EVERGREEN.
IN 1994...A FUNNEL CLOUD WAS SIGHTED OVER AURORA; HAIL TO
1 3/4 INCH DIAMETER FELL NEAR BRIGHTON; AND HAIL OVER AN
INCH IN DIAMETER FELL OVER AURORA...SOUTHEAST DENVER...
LOUISVILLE...AND BOULDER. LIGHTNING STRUCK A HOME IN
HENDERSON 9 MILES NORTH OF DENVER AND KNOCKED A HOLE IN
THE ROOF...WHICH CAUSED THE CEILING TO COLLAPSE. HAIL TO
1 1/4 INCH DIAMETER WAS MEASURED AT STAPLETON INTERNATIONAL
AIRPORT.
IN 2002...THE HAYMAN WILDFIRE IN THE FOOTHILLS TO THE SOUTHWEST
OF DENVER INTENSIFIED...AND THE WINDS ALOFT CARRIED THE SMOKE
PLUME DIRECTLY OVER METRO DENVER...AGAIN CREATING A DENSE HAZE
OF SMOKE WHICH BLOCKED THE SUN. SURFACE VISIBILITIES WERE
AGAIN REDUCED TO AS LOW AS 1 1/4 MILES AT DENVER
INTERNATIONAL AIRPORT.
IN 2004...SEVERE THUNDERSTORMS PRODUCED HAIL TO 3/4 INCH IN
DIAMETER NEAR MORRISON...IN LITTLETON...NEAR CONIFER...NEAR
CASTLE ROCK...AND IN AURORA NEAR CHERRY CREEK.
IN 2013...A LANDSPOUT TORNADO TOUCHED DOWN AT DIA. THE TORNADO
SENT 10 THOUSAND TRAVELERS ON THE CONCOURSE...ON PLANES AND IN
THE TERMINAL SCRAMBLING TO GET INTO TORNADO SHELTERS. THE
TORNADO FORMED JUST TO THE SOUTH OF RUNWAY 35R AND THEN MOVED
SLOWLY NORTHWEST BETWEEN RUNWAY 35R AND 35L...AND MOVED TO
WITHIN ONE THIRD OF A MILE OF CONCOURSES A AND B BEFORE
DISSIPATING. THE TORNADO MOVED EXTREMELY CLOSE IF NOT OVER THE
ASOS (AUTOMATED SURFACE OBSERVATION SYSTEM) AND ANOTHER LOW
LEVEL WIND SHEAR SENSOR AT DIA. THE ASOS WEATHER OBSERVING
SYSTEM REPORTED A 97 MPH WIND GUST...WHILE THE WIND SHEAR SENSOR
REPORTED A WIND GUST TO 109 MPH AT THE SAME TIME – INDICATIVE
OF AN EF1 TORNADO. THERE WAS ONLY MINOR DAMAGE NOTED TO THE
EQUIPMENT. NINE FLIGHTS WERE DIVERTED ELSEWHERE DURING A
TORNADO WARNING. SEVERE THUNDERSTORMS ALSO PRODUCED LARGE HAIL
UP TO 1 INCH IN DIAMETER IN ADAMS AND WELD COUNTIES.
IN 2014...A SEVERE THUNDERSTORM PRODUCED LARGE HAIL UP TO QUARTER
SIZE NEAR BUCKLEY AIR FORCE BASE. AT DENVER INTERNATIONAL
AIRPORT...A PEAK WIND GUST TO 55 MPH WAS OBSERVED FROM THE
SOUTHWEST...ALONG WITH 0.37 INCHES OF WATER.
IN 2015...A SEVERE THUNDERSTORM PRODUCED HAIL...FROM 1 TO 1 3/4
INCHES IN DIAMETER...NEAR LAFAYETTE...LOUISVILLE AND SUPERIOR.
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