Public Information Statement
Issued by NWS Denver/Boulder, CO
NOUS45 KBOU 170045
Public Information Statement
National Weather Service Denver/Boulder CO
645 PM MDT SAT JUL 16 2016
...This week in metro Denver weather history...
7-25 In 1934...a streak of 15 consecutive days of 90 degrees
ranked 5th on the list of hot streaks. The record of
24 consecutive days was established in the summer of
13-5 In 2008...a streak of 24 consecutive days of 90 degrees
shattered the previous record of 18 consecutive days
established in 1901 and 1874. Ironically...no new single
day record high temperatures were set in the month of July.
In August however...a record of 104 degrees was set on the
1st...and another record of 103 degrees was set on the 2nd.
In addition...a record low min of 70 degrees was set on
16-18 In 1997...an extended hot spell resulted in 3 temperature
records being set. The maximum temperature reached 98
degrees on each of the days...setting records on the 16th
and 18th. The low temperature of 71 degrees on the 17th
was a record high minimum for the date. The high
temperature reached 100 degrees on the 17th at the site
of the former Stapleton International Airport.
17 In 1872...the U.S. Army Signal Service weather observer
recorded snowfall during the early morning hours in the
hand written daily weather journal: "Rain commenced at
1:30 A.M. changing about 3 A.M. to snow & in about half
an hour to rain again; it continued until 6 A.M." This
is the only recorded occurrence of snowfall in Denver in
July...but this report is not included in the "official"
station snowfall records...which did not begin in Denver
until January 1...1882. The low temperature on this
morning was 45 degrees...which is sufficiently cold for
the occurrence of light stratiform snowfall.
In 1918...a thunderstorm produced hail to an inch in depth
on the ground. The stones varied in size from a small
cherry stone to nearly 1/2 inch in diameter. Not much
permanent damage was done to crops. Precipitation
totaled 0.40 inch...and northeast winds were sustained
to 25 mph with gusts to 28 mph.
In 1971...the temperature reached a high of 101 degrees at
Stapleton International Airport.
In 1983...3/4 inch diameter hail fell at Lafayette...while
golf ball size hail pelted Brighton and Northglenn where
funnel clouds were also sighted.
In 1986...1 1/2 inches of rain fell in an hour and 15 minutes
in southeastern Aurora. Thunderstorm rainfall totaled
0.89 inches at Stapleton International Airport.
In 1987...a small tornado was sighted near Watkins...in the
vicinity of Front Range Airport.
In 1997...lightning ignited an oil well tank holding 10
thousand gallons of oil...16 miles northwest of Bennett.
About 200 acres of grassland burned before the fire could
be extinguished. A dry microburst produced a wind gust to
52 mph at Denver International Airport.
In 2000...an estimated 2 inches of rain fell in less than an
hour...causing two secondary roads in Buck and Miller gulches
in the Hi Meadows fire burn area to wash out. Water
also covered Jefferson County Road 68 which connects to
Bailey. Homeowners in Pine Valley Estates attempted to
divert some of the runoff by piling stacks of hay on the
hillside above their homes. Torrential rainfall...up to
3.50 inches an hour...caused flash flooding along Whiskey
Gulch near Elizabeth. Several roads were washed out and
basements flooded during the storm. Along County Road 13...
about 6 miles north-northwest of Elizabeth...rushing water
washed away a 15-foot section of the road. The floodwaters
forced debris and mud into four huge culverts...sending water
over the road. At Denver International Airport...an United
Airlines ground crew worker was struck by lightning as she
was loading a Boeing 747 jumbo jet. The woman was injured
when lightning either hit the jet or the loading equipment
that she was working near. The 25-year-old woman received
only minor injuries.
In 2006...outflow from severe thunderstorms to the southeast
of metro Denver produced southeast sustained winds to 35
mph with gusts as high as 52 mph at Denver International
Airport during the late evening.
In 2011...a deluge of heavy rain occurred in and around
Nederland when the storm dumped nearly 2 inches of rain in
30 minutes. The heavy rainfall washed out hillsides and
dirt roads. In Nederland...a culvert became blocked with
debris and forced the water to spread into a nearby
bookstore. The rainfall also damaged several residential
roads in the Sunnyside Subdivision and Navajo Road became
impassable. Several homes suffered flood damage as the
runoff from a nearby Beaver Creek jumped its banks and
flooded garages...living rooms and bedrooms of nearby
18 In 1874...the temperature climbed to 90 degrees or more for the
18th consecutive day...setting a record. The record was
equaled from July 6th through the 23rd in 1901.
In 1902...a thunderstorm produced northwest winds sustained to
45 mph with gusts to 48 mph along with rain and hail.
Total precipitation was 0.53 inch.
In 1911...a shower produced north winds sustained to 44 mph.
In 1958...1 1/2 inch diameter hail fell 9 miles west-southwest
of Stapleton Airport.
In 1981...a thunderstorm bombed Evergreen with about 2 inches
of rain in 45 minutes. A heavy hailstorm left 5 to 7 inches
of hail on the ground in some places and stopped the Colorado
Open Golf Tournament at Hiwan.
In 1985...over 2 inches of rain doused the southwest suburbs
of Denver. Street flooding occurred in the Montbello area
of northeast Denver.
In 1992...nickel size hail fell across central Douglas County
near Castle Rock and Sedalia. One inch diameter hail fell
in Castle Rock.
In 1993...thunderstorm winds gusted to 60 mph at Strasburg
east of Denver.
In 2004...heavy thunderstorm rainfall caused flooding over
parts of the Virginia Canyon Road near Idaho Springs.
Several sections of the roadway were washed out. The
road was closed temporarily for repairs.
18-19 In 2003...heavy rain producing thunderstorms caused flash
flooding across southern metro Denver. Automated rain
gages measured 2 to 3 inches of rain in less than an
hour. The heavy rainfall caused many intersections and
underpasses to flood...stranding motorists. Sections of
I-25 and I-225 were closed due to the high water.
18-2 In 1987...a streak of 16 consecutive days of 90 degrees
ranked 4th on the list of hot streaks. The record of
24 consecutive days was established in the summer of
19 In 1875...recent heavy rains produced high waters on many
creeks and rivers in the area...which threatened the
destruction of property at some locations. Cherry Creek
in the city was running the highest in 10 years. Heavy
rain in the mining regions over the last 2 days resulted
in water running "everywhere" and the suspension of some
In 1881...a thunderstorm passing across the city produced
lightning with no rain. A woman was seriously injured
when struck by lightning several blocks from the weather
office in downtown Denver.
In 1934...the temperature reached a high of 100 degrees in
In 1965...hail...rain...and lightning hit west metro Denver.
Hail stones as large as 1 1/2 inches in diameter accumulated
to a depth of 2 inches in Evergreen where 2.95 inches of
rain in 2 hours caused some flooding in the business section
of the town. Lightning caused some power outages.
In 1973...two funnel clouds were observed 5 miles southeast of
Littleton. The same funnel clouds were observed for 20
minutes...5 miles west and 5 miles west-southwest of Arapahoe
County Airport...now Centennial Airport.
In 1975...lightning injured a man in Denver and caused power
outages in Aurora...Lakewood...Westminster...and west Denver.
In 1984...strong thunderstorm winds gusting to 45 mph shattered
7 large plate glass windows at Stapleton International
In 1985...a tornado touched down in the Surrey Ridge area of
northern Douglas County...just west of I-25. Ten homes were
damaged; one under construction was nearly destroyed. Two
vehicles were thrown off I-25 injuring three people. A
pick-up truck was thrown 50 feet by the twister. In
addition...a cluster of severe thunderstorms pounded all
of metro Denver with torrential rain...hail...and wind. The
heaviest rain fell in Aurora where one location reported
2.37 inches in just 40 minutes. One location in northeast
Aurora received a total of 4.30 inches from the storm.
There was extensive street and basement flooding...and a
number of roads were damaged or washed out. An Aurora boy
suffered minor injuries when he was washed into a drainage
ditch. Golf ball size hail in Aurora piled up to 5 inches
deep. An inch of rain fell in 20 minutes at Stapleton
International Airport...closing it to air traffic for an
hour. Up to 1 1/2 inches of rain fell in just 15 minutes
over central Denver with the high water closing I-25. The
water was so deep on the freeway...that one vehicle was
completely submerged and people were diving into the water
from the freeway overpass. Three homes in Littleton were
damaged by lightning. Wind blew out several windows from
a high rise apartment building in southeast Denver.
Rainfall totaled 1.51 inches at Stapleton International
In 1997...torrential rain and damaging hail pummeled eastern
sections of metro Denver. Hail up to 1.25 inches in
diameter fell at the National Weather Service office on the
site of the former Stapleton International Airport. The
hail continued for about 15 minutes and accumulated to a
depth of 2 to 3 inches...causing extensive damage to cars in
the area. Heavy rainfall totaled 3.83 inches in about an
hour from the nearly stationary thunderstorm. Numerous cars
stalled along I-70...and several homes were flooded in east
Denver. The roof of a building collapsed under the weight
of the water. The next day several "fatalities" were
discovered near the National Weather Service office; two
prairie dogs were found dead along with three rabbits that
either drowned or were killed by the large hail.
In 1999...lightning struck two residences in Littleton...but
caused only minor damage. Lightning triggered a fire at a
residence in Cherry Hills Village. A small portion of the
roof and ceiling were damaged before the fire could be
In 2000...hail as large as 1.25 inches in diameter fell near
Roggen northeast of Denver.
In 2004...heavy rainfall caused flooding on the Virginia Canyon
Road near Idaho Springs...which had to be closed for repairs.
In 2006...the temperature climbed to a high of 100 degrees. The
high temperature was not a record maximum for the date.
In 2007...a severe thunderstorm produced large hail...up to 1
inch in diameter...about 6 miles north of Northglenn.
19-23 In 2005...the high temperature climbed above 100 degrees on
each of the 5 days with readings of 101 on the 19th...105 on
the 20th...104 on the 21st...and 102 on both the 22nd and 23rd.
A new record maximum temperature for the month of July of 105
degrees was set on the 20th...which also equaled the all time
record maximum for Denver of 105 degrees first set on August
8th in 1878. Daily maximum temperature records were set on
each day...and the 5 day period equaled the record for the
most consecutive days of 100 degrees or more first set from
July 4th through 8th in 1989. The intense heat resulted in
a high use of electricity for cooling purposes. The demand
for electric power exceeded the supply and rolling black-outs...
each lasting about an hour...were scheduled across metro Denver
during the afternoons and early evenings.
20 In 1898...an apparent thunderstorm produced sustained northwest
winds to 45 mph with gusts to 51 mph.
In 1939...the high temperature reached 102 degrees in downtown
Denver. This was the highest temperature recorded since
August 8...1878...a period of 61 years...and the third highest
temperature of record at the time. Six miles to the east...
at Denver Municipal Airport...the maximum temperature reached
104 degrees. A dry period during mid-July...combined with low
relative humidities...resulted in an unusually large number
of forest fires in the mountains west of Denver.
In 1941...an afternoon thunderstorm caused two lightning
deaths. The men were struck by lightning near the Denver
In 1951...a thunderstorm wind gust to 54 mph was recorded at
In 1965...heavy rain west of Denver damaged roads and bridges.
Two bridges in Golden were washed out. Lightning in Denver
caused some power failures and fires...mostly in the northeast
section of the city. Heavy rain caused street flooding in
the City of Denver. Hail as large as 1/2 inch in diameter
and 0.40 inch of rain in 5 minutes were measured at
Stapleton International Airport where precipitation totaled
1.09 inches. Lightning damaged a house in Littleton...and
caused a power outage in Idaho Springs.
In 1973...lightning damage was reported west of Arvada.
In 1975...heavy rains caused flash flooding across metro
Denver...resulting in the closing of several streets and
damage to numerous homes and businesses. Hail 1/2 to 3/4
inch in diameter was reported.
In 1976...heavy thunderstorms caused flooding of streets in
southeast Denver and western Arapahoe counties. A total of
3.35 inches of rain was measured at Kassler southwest of
In 1978...a girl was injured by lightning at a country club
southwest of Denver.
In 1984...heavy rain was reported just east of Buckley Field in
Aurora where 1.15 inches fell in just 45 minutes.
In 1986...thunderstorms dumped heavy rain across metro Denver
causing extensive street flooding...power outages...and
basement flooding. The greatest recorded rainfall was 4.39
inches in Lakewood. In extreme northwest Denver...2.29
inches of rain fell in just 20 minutes. Arvada was drenched
with 2.60 inches of rain...and over an inch fell in southeast
Denver and adjacent sections of Aurora.
In 1990...heavy thunderstorm rains caused flash flooding in
sections of Littleton where 1.20 inches of rain fell in
less than 30 minutes. The deluge caused Dry Creek to jump
its banks...causing damage to residential streets...curbs...and
sidewalks. Nearly 100 vehicles were stranded for a time in
fender-deep water when sewers and drainage ditches became
choked with debris. The heavy runoff submerged many
Littleton streets and intersections.
In 1992...strong thunderstorms moved slowly through east metro
Denver...producing rainfall up to 2.50 inches in a short time.
Weather spotters reported 0.75 to 1.00 inch of rain in less
than 30 minutes. Many areas of southeast Denver were
flooded...including I-25 where up to 6 feet of water
filled some underpasses. Hail to 3/4 inch in diameter
fell in Aurora.
In 1995...a tornado touched down briefly in an open field
near Strasburg. Thunderstorm winds gusted to 58 mph at
In 1996...strong thunderstorm winds damaged the building of
a telephone installation company in the City of Denver.
In 1998...the high temperature reached 100 degrees at
Denver International Airport.
In 2006...heavy rainfall in the Overland Wildfire burn area
caused minor flash flooding in Jamestown. The roads behind
the Jamestown Fire Hall were washed out...when a culvert was
blocked by debris. A rockslide was also reported in town.
In 2009...a severe thunderstorm produced damaging winds...large
hail and very heavy rain across the western and southern
suburbs of Denver. Widespread damage was observed in the
cities of Arvada...Lakewood and Wheat Ridge. The intense
straightline winds were the result of a wet microburst which
downed hundreds of trees and snapped power poles. Wind
gusts to 80 mph were reported along with hail up to 1 3/4
inches in diameter. The combination of wind and hail
caused widespread damage to homes and vehicles. The damage
claim estimates totaled 350 million dollars; about 32900
claims were filed for homes...while another 19500 claims
were filed for vehicles. As many as 90000 homes and
businesses were left without power. In some areas it took
up to 3 days to completely restore electrical service.
Minor injuries were reported from broken glass during the
storm...but no one was hospitalized. The storm crippled the
computers at the Colorado Crime Information Center in
Lakewood for nearly 3 hours. One weak tornado touched down
near Parker but did no damage. In southern Weld County...
severe thunderstorms produced widepread damage over 150
square miles of farmland. In all...400 farms were directly
impacted by severe weather. Damage to crops alone was
estimated to 3 million dollars. At Denver International
Airport...a peak wind gust to 48 mph was observed from the
northeast. In addition...1.01 inches was measured at the
In 2013...severe thunderstorms produced large hail...ranging in
size from nickel to golfball...across portions of Arapahoe...
Denver...Elbert and Weld Counties. In addition...damaging wind
gusts to 60 mph snapped large tree branches in Thornton and
3 miles west-southwest of Buckley AFB. In Bennett...hail up
to 1 1/2 inches in diameter was reported. At Denver
International Airport...a peak wind gust to 58 mph was
recorded from the northeast.
20-23 In 1961...unusually cool weather for July resulted in several
temperature records. Record minimum temperatures were
set or equaled on each day with readings of 51...51...49...
and 49 degrees. High temperature of only 64 degrees on the
21st was a record low maximum for the date.
20-25 In 1965...heavy showers and thunderstorms doused metro Denver
with significant rain each day. Rainfall for the six days
totaled 5.16 inches at Stapleton International Airport.
Massive rainfall occurred on the 20th...21st...and 25th...
flooding streets and basements and causing streams to
overflow. The heaviest rainfall...2.05 inches...at Stapleton
International Airport occurred on the 25th.
21 In 1879...lightning struck a house in north Denver. The bolt
struck the center of the roof driving part of it into the
house and scattered shingles all over the yard. Furniture
in the house was heavily damaged...but none of the the nine
residents were injured other than being stunned. The noise
sounded as if a cannon had been exploded. Rainfall was only
0.02 inch downtown.
In 1921...northwest winds were sustained to 42 mph with gusts
to 48 mph.
In 1943...a severe thunderstorm during the evening caused the
death of a man whose truck skidded on a muddy roadway on
a steep hill and overturned pinning him underneath. Several
small fires were started by the lightning...and electrical
wires were downed. No serious property damage was reported...
but firemen answered 19 alarms in 2 hours. One person was
injured by lightning.
In 1965...a funnel cloud was sighted in the northern portion of
Denver. Later...4 or 5 funnel clouds were sighted about 15
miles north of Stapleton International Airport. Heavy rain
accompanied by hail washed away part of a city street and
caused other flooding in Central City. There were heavy
showers and some damage from lightning in both Denver and
Boulder. Marble to golf ball size hail fell 10 miles
northwest of Stapleton Airport.
In 1966...heavy thunderstorm rains flooded streets and
basements across metro Denver.
In 1973...a tornado touched down briefly 2 miles northeast
of Parker...causing minor damage. Funnel clouds were also
sighted 3 miles northeast of Sedalia...11 miles south
southeast of Stapleton International Airport...and near
Parker. Hail to 3/4 inch in diameter fell over the western
suburbs of Denver.
In 1974...heavy thunderstorm rains caused flash flooding in
metro Denver. Rainfall totaled 1.26 inches at Stapleton
In 1976...heavy thunderstorm rains occurred across south metro
Denver with 1.75 inches of rain recorded in 40 minutes
in southeast Aurora and 2.00 inches in 20 minutes at Cherry
Creek Reservoir. A funnel cloud was sighted by the public
east of Arapahoe County Airport...now Centennial Airport.
In 1981...the temperature reached 100 degrees...setting a new
record high for the date.
In 1983...downpours drenched the Front Range where amounts of
1 to 2 inches were common. The heaviest reported rainfall
was 2.36 inches in a 6-hour period at Parker where hail to
3/4 inch and wind gusts as high as 75 mph occurred. Up to
golf ball size hail fell in the Parker and Castle Rock areas;
wind gusts to 75 mph were recorded in Castle Rock.
In 1993...thunderstorm winds toppled a 3 story high Russian
olive tree in Boulder. The tree barely hit and only
slightly damaged a parked car.
In 1995...thunderstorm winds from the west gusted to 55 mph
at Denver International Airport.
In 2002...heavy thunderstorm rainfall caused flash flooding
in the Hayman Fire burn area. South Deckers Road...State
Highway 126...was closed when 4 feet of water inundated
a section of the roadway. The U.S. Forest Service had
to remove 40 truck loads of sediment to reopen the road.
Also...heavy debris flow washed out a secondary service
road in southwest Douglas County. Hail as large as 3/4
inch in diameter fell near Bennett.
In 2011...lightning struck a home in Arapahoe County and
caused substantial fire damage. Five people were in the
home but no one was injured. There was structural damage
to both the interior and exterior of the residence.
22 In 1874...a severe thunderstorm during the late afternoon
produced 1.36 inches of rainfall in an hour...most of which
fell in 20 minutes. There was much damage from flooding
of streets and considerable damage to private property.
The lightning was brilliant and continuous during the
storm. Seven buildings were struck by lightning in the
city...in addition to many places where it struck only the
ground. A magnificent example of ball lightning was
observed. When about 200 feet above the house tops...the
ball exploded and broke into 7 or 8 different balls...each
about 6 inches in diameter. Upon reaching about 20 feet
above the ground...these balls broke into small fragments
about 3 inches long and 1/2 inch wide. A shed situated
in an alley about one block away was literally covered
with these sparks. After the storm was over...the shed
and adjacent area showed no trace of the event. Not the
slightest mark could be detected on structures or on the
In 1879...a terrific electrical storm passed over the city
during the afternoon. The lightning display was unusually
vivid and the crash of thunder seemed at the very house
tops. A few homes and buildings were struck by lightning.
A home on Capitol Hill sustained much damage to furniture...
but the residents in another wing of the house were not
injured. Lightning struck a fence at the corner of Curtis
and Broadway. A lightning bolt stunned a workman and
knocked a mason`s trough from his hand. A school was struck
but was not damaged. Lightning struck the ground near
Tenth and Colfax. Rain fell in torrents for a time...but the
heaviest was on the outskirts of the city. Rainfall in the
city was only 0.30 inch.
In 1882...lightning struck and killed a man in the northern
part of the city.
In 1895...heavy rainfall of 1.53 inches was measured in
In 1931...the high temperature reached 100 degrees in
In 1965...lightning struck and killed a boy standing by an
automobile near Stapleton International Airport. Scattered
heavy showers accompanied by hail and wind occurred across
metro Denver. Heavy rain caused some street damage in
In 1973...minor thunderstorm wind damage was reported in
In 1983...heavy thunderstorms dumped torrential rain and large
hail across metro Denver. The most serious problems were
caused by heavy rainfall in the foothills...which produced
flooding on Bear Creek. Runoff from 3 inches of rain in
45 minutes at Kittredge caused Bear Creek to rise 5 feet in
10 minutes at Morrison...washing out two bridges. One bridge
collapsed...plunging a fire truck into the water...but the
occupants were not injured. The town was evacuated for 2
hours. Evergreen was drenched with 2.61 inches of rain in
30 minutes...which caused street flooding along with power
outages. Hail to golf ball size damaged cars. A deck on a
house east of Evergreen was washed away. At Idaho Springs...
2 inches of rain fell in 45 minutes. Golden received
3 inches of rain in an hour with 0.80 inch of rain in seven
minutes at Littleton. Heavy rain and large hail also fell
in the City of Denver and its northern and eastern suburbs...
causing street flooding. Water was 6 feet deep on one
In 1991...heavy rains caused extensive flooding across north
metro Denver. Ralston Creek in Arvada flowed out of
its banks. At the intersection of I-25 and I-70...up to 8
feet of water covered the highway. A foot of water covered
a stretch of I-70 in northwest Denver. Thunderstorm
rainfall totaled only 0.82 inch at Stapleton International
In 1998...lightning sparked a fire which caused extensive
damage to a home in Englewood. Most of the second floor
In 2004...severe thunderstorms produced hail to 1.25 inches
in diameter in Commerce City and near Brighton.
22-23 In 1991...heavy rains over the Palmer Divide and along the
Front Range caused the South Platte River to flood from
near Henderson to Fort Lupton. The river was out of its
banks at several locations with water covering the roads
through the night. Only minor damage was reported.
23 In 1901...the temperature climbed to a high of 90 degrees...
marking the 18th consecutive day with a high temperature
of 90 degrees or more. This equaled the record of 18
consecutive days set from July 1st through July 18th in
In 1910...the temperature climbed to a high of 101 degrees
in downtown Denver.
In 1936...the high temperature reached 100 degrees in
In 1957...a tornado was observed by National Weather Service
personnel 25 miles east-northeast of Stapleton Airport for
7 minutes. No property damage or injuries were reported.
The public reported a funnel cloud 10 miles northeast of
In 1960...lightning struck many locations across metro Denver.
A Boy Scout leader was struck and injured at the Rocky
Mountain Arsenal. Some sections of Arvada were blanketed
with a white layer of hailstones. A number of weed fires
were started by lightning. Some houses were struck...but no
serious damage occurred. Heavy rain fell from northwest
Denver to Brighton with up to 1.50 inches in some areas.
In 1965...heavy rain flooded and damaged homes in Georgetown...
where the sewer system was damaged and the water supply
contaminated. Heavy rains in Aurora washed out earthen
bridges over Sand Creek. Streets were flooded in Denver.
Several highways were washed out to the east and southeast
In 1975...heavy rains caused flash flooding in the foothills
west of Denver. Several roads and businesses were damaged
in the Central City and Blackhawk areas.
In 1983...heavy thunderstorms blasted Denver and areas to the
south. Douglas county was hardest hit. Golf ball size hail
fell in and near Parker. Many homes at the Pinery south of
Parker had windows broken and paint stripped by the storm
with some vehicles dented by the large stones. In Parker...
1.90 inches of rain fell in just 30 minutes. Many roads in
Douglas County were washed out...and at least one bridge was
damaged. Up to 2 inches of rain fell in Lakewood...and
Littleton was drenched by 1.60 inches in 15 minutes. A
department store in Lakewood suffered water damage when a
pipe handling runoff broke...sending 4 inches of water onto
the floor of the store.
In 1990...a thunderstorm wind gust to 53 mph was recorded at
Stapleton International Airport...where 1/8 inch diameter
In 1992...heavy thunderstorm rains caused Howard Gulch in
southeast Denver to flow over its banks. A weather spotter
recorded thunderstorm wind gusts to 63 mph in Aurora.
Another spotter measured a wind gust to 60 mph...which
toppled a large tree. Thunderstorm winds gusted to only
41 mph at Stapleton International Airport.
In 1996...hail...as large as an inch in diameter...fell 5 miles
west of Castle Rock.
In 1997...damaging thunderstorm winds associated with a wet
microburst ripped the roof off a barn near Brighton...
causing the east side of the structure to collapse. The
roof of a nearby utility shed was also lifted off and blown
60 feet away. West winds gusted to 38 mph at Denver
In 2001...a severe thunderstorm pelted Littleton with hail as
large as 1 1/2 inches. Total damage to vehicles...roofs...
buildings...and landscaping totaled over 600 thousand
dollars. Rain leaked into offices...damaging computers.
Almost every vehicle parked in the Littleton Center lot
sustained some hail damage. Thunderstorm winds gusted to
55 mph at Denver International Airport.
In 2002...a small tornado briefly touched down near Bennett.
No damage was reported.
In 2004...heavy thunderstorm rainfall in the Overland fire
burn area caused flash flooding in Jamestown. Up to a foot
of water reportedly covered the highway near Jamestown.
Many of the town`s culverts filled with dirt and debris...
causing the overflow to wash onto streets and into homes.
Heavy machinery had to be used to remove piles of mud
up to 7 feet deep. Parked cars slid down the street
with the mud and water...and many had to be dug out. The
fire station in Jamestown was inundated with 10 inches of
muddy water. Heavy thunderstorm rainfall caused street
flooding in Federal Heights and Thornton. Several streets
were inundated with 2 to 4 feet of water...including 84th
Avenue and Grant Street...Conifer Street and Huron Blvd....
102nd Ave. and Melody...as well as 83rd Ave. and Washington.
Several cars were stranded in the flood waters. Heavy
rainfall also caused street flooding in parts of Westminster.
Water reportedly flowed into car windows just north of 104th
Avenue and U.S. Highway 36. Sections of two roads had
to be closed due to flooding. Heavy thunderstorm rainfall
of up to 2 inches in 45 minutes caused flash flooding just
east of Aurora. Floodwaters ranging from 2 to 3 feet deep
forced the closure of Powhaten...Gun Club and Picadilly Roads.
Lightning caused power outages in parts of Arvada. About
9800 customers were without power for up to 90 minutes.