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Storm Data and Unusual Weather Phenomena
December 2008
Time Path Path
Local/ Length Width
Location Date Standard (Miles) (Yards)
CALIFORNIA, Extreme Southeast
CAZ032 Riverside County Eastern Deserts
17 0800MST
2200MST
A strong low pressure system moved
slowly through Southern California,
producing very heavy snow. About a foot
of snow fell in the higher elevations of
Joshua Tree NP. Snow was also reported
in many lower desert areas. Some roads
were either closed or traffic was
restricted.
CAZ033 Imperial County except the Lower
Colorado River Valley
18 0600PST
1000PST
Plentiful moisture combined with light
winds to produce dense fog.
CALIFORNIA, North Central
CAZ015 Northern Sacramento Valley
04 0000PST
2359PST
04 0000PST
2359PST
High pressure over the area brought
light winds and clear skies. This
allowed the unusual case of a record
minimum and a record maximum both being
tied on the same day in the northern
Sacramento Valley.
CAZ068-069 Mt Shasta/Western Plumas County--West
Slope Northern Sierra Nevada
14 2200PST
16 1600PST
A cold low pressure system dropped
southward into northern California
bringing 2 to 3 feet of snow
accumulation to a number of mountain
locations. Snowfall amounts of 4 to
nearly 5 feet were recorded at some of
the higher elevation ski resorts in the
northern Sierra Nevada Mountains. The
very cold airmass allowed for relatively
low snow levels. Snow amounts of more
than a foot fell at elevations as low as
3000 feet while amounts of 3 to 4 inches
fell in the foothills. Gusty winds
combined with the snow to cause poor
visibility at times. Numerous car
accidents were reported in slippery
conditions and downed trees caused power
outages to 11,000 customers in the
northern Sierra Nevada Mountain
communities.
CAZ015 Northern Sacramento Valley
18 0000PST
2359PST
A cool high pressure system in the wake
of a storm coupled with light winds and
clear skies to bring unseasonably cold
morning temperatures to the northern
Sacramento Valley.
CAZ013-063>064- Burney Basin/Eastern Shasta
068-069 County--Clear Lake/Southern Lake
County--Mountains Southwest Shasta
County to Northern Lake County--Mt
Shasta/Western Plumas County--Shasta
Lake/North Shasta County--West Slope
Northern Sierra Nevada
24 0600PST
25 0000PST
A winter storm which came in two waves
dropped heavy snow over the mountains of
interior northern California on the 24th
and 25th. The northern Sierra Nevada
Mountains received 1 to 3 feet of snow
above 6000 feet, with amounts of more
than 5 feet reported at Lassen National
Park. Wind gusts exceeding 60 mph were
recorded over higher mountain peaks. The
strong wind coupled with falling snow
brought limited visibilities over the
higher mountains. Holiday travel was
significantly curtailed with many roads
closed for a period of time, including
Interstate 80.
CALIFORNIA, Northeast
CAZ073 Mono
13 0555PST
A winter storm brought strong winds to
the eastern Sierra and western Nevada.
CAZ070>073 Greater Lake Tahoe Area--Lassen/Eastern
Plumas/Eastern Sierra--Mono--Surprise
Valley
14 1700PST
15 2200PST
A powerful winter storm brought heavy
snowfall to the eastern Sierra and
western Nevada.
CAZ073 Mono
16 1305PST
1310PST
One day after a powerful snowstorm
deposited up to 4 feet of snowfall in
the central Sierra Nevada an avalanche
occurred at Mammoth Mountain Ski Resort.
CAZ070>072 Greater Lake Tahoe Area--Lassen/Eastern
Plumas/Eastern Sierra--Surprise Valley
18 2000PST
19 1000PST
CAZ072-073 Greater Lake Tahoe Area--Mono
19 0644PST
1418PST
A low pressure system moved through the
northern Sierra and western Nevada and
brought snow and high winds to the
region.
21 1700PST
22 0500PST
CAZ073 Mono
21 1800PST
22 0500PST
CAZ072-073 Greater Lake Tahoe Area--Mono
22 0144PST
0550PST
A low pressure system brought snowfall
and strong winds to the eastern Sierra.
CAZ070>073 Greater Lake Tahoe Area--Lassen/Eastern
Plumas/Eastern Sierra--Mono--Surprise
Valley
24 0700PST
25 1400PST
CAZ072 Greater Lake Tahoe Area
25 1030PST
1035PST
A winter storm brought over two feet of
snow to parts of the Sierra Nevada and a
rare white Christmas to much of western
Nevada. M21OU
CALIFORNIA, South Central
CAZ089>092 East Central San Joaquin
Valley--Southeast San Joaquin
Valley--Southwest San Joaquin
Valley--West Central San Joaquin Valley
01 0000PST
1400PST
05 0300PST
1200PST
CAZ090>092 East Central San Joaquin
Valley--Southeast San Joaquin
Valley--Southwest San Joaquin Valley
05 0300PST
1200PST
December began with the central
California interior under an upper-level
high-pressure ridge. This ridge brought
a stable airmass to the region, and
strengthened the inversion over the San
Joaquin Valley. As a result, areas of
low clouds and overnight and morning
dense fog were a daily occurrence during
the first few days of the month.
Visibilities near zero occurred in many
parts of the San Joaquin Valley. Drizzle
occurred during the morning of December
2nd, and enough moisture condensed out
of the lowest levels of the airmass for
a respite from widespread dense fog on
the 3rd and 4th, although patchy dense
fog did occur. Rather than widespread
dense fog, a layer of low altitude
stratus formed and persisted over the
San Joaquin Valley. More widespread
dense fog returned to the central and
southern San Joaquin Valley on the 5th
and 6th.
CAZ089>092 East Central San Joaquin
Valley--Southeast San Joaquin
Valley--Southwest San Joaquin
Valley--West Central San Joaquin Valley
10 0200PST
12 0500PST
Behind a departing low, an upper-level
ridge over the eastern Pacific built
into California, bringing more stratus
and patchy dense fog during the morning
of December 8th. A weak upper-level
disturbance moved over the central
California interior, bringing light rain
to the central and southern San Joaquin
Valley; a few hundredths of an inch fell
at Fresno. High pressure rebuilt over
the central California interior,
bringing more dense fog to the central
and southern San Joaquin Valley. The
worst dense fog conditions were
prevalent during much of the overnight
and morning hours on December 9, 10, 11,
and 12, when visibilities were lowered
to near zero in some areas due to very
dense fog.
CAZ095-098-099 Indian Wells Valley--Kern County
Mountains--Southeast Kern County Desert
13 0400PST
14 0300PST
CAZ089-090 East Central San Joaquin Valley--West
Central San Joaquin Valley
14 0400PST
0800PST
CAZ095>097 Kern County Mountains--South Sierra
Mountains--Tulare County Mountains
14 2024PST
16 0400PST
The weather pattern changed on December
12th, as a series of upper-level troughs
began moving through the central
California interior. These troughs
brought several days of precipitation to
the region, as well as a push of
unseasonably cold air. The first storm
brought up to an inch of rain to the
central and southern San Joaquin Valley,
and heavy snow to the Southern Sierra
Nevada and Tehachapi Mountains. Wofford
Heights, near the southern end of the
Sierra Nevada received a foot of new
snow on December 15th, as did Camp
Nelson, further north in Tulare County.
1648 PST: Ponderosa Basin 18 inches of
snow so far. Locations in the higher
terrain saw very high snowfall totals
with this storm. Between 2 to 4 feet of
snow fell at locations such as Tenaya
Lake, Poison Ridge, Lower Kibbie Ridge,
Pascoes, Wet Meadows, and Casa Vieja
Meadows. Despite the low snow levels,
little snow fell in the Sierra Nevada
foothills. This storm also brought
strong winds to the Kern Mountains and
the Deserts with peak wind gusts
reported between 50 to 55 mph.
17 0400PST
2000PST
CAZ099 Southeast Kern County Desert
17 0400PST
2000PST
CAZ089>091 East Central San Joaquin
Valley--Southwest San Joaquin
Valley--West Central San Joaquin Valley
18 0300PST
0900PST
Another major winter storm reached the
central California Interior during the
afternoon of December 16th. This storm
dropped south along the coast, and as a
result had a stronger impact on the Kern
County mountains and desert than on the
Sierra Nevada north of Kings Canyon. In
the Kern desert, California City had 6
inches of new snow, and Rosamond
received 2 inches. In the Kern County
mountains, a foot of snow fell at Alpine
Mountain. Rain that developed over San
Luis Obispo and Monterey Counties during
the afternoon of the 16th moved into the
west side of the San Joaquin Valley, and
actually produced light snowfall at
Harris Ranch.
As the storm crossed southern California
and into Arizona, skies cleared over the
central California interior. In the
central and southern San Joaquin Valley,
temperatures fell into the mid 20s
during the morning of December 18th. The
lowest temperatures were recorded in
Merced and western Fresno Counties,
where durations below 28 degrees were as
much as 5 hours.
CAZ098-099 Indian Wells Valley--Southeast Kern
County Desert
21 0255PST
22 2100PST
CAZ096-097 South Sierra Mountains--Tulare County
Mountains
21 1600PST
22 1345PST
CAZ095>097 Kern County Mountains--South Sierra
Mountains--Tulare County Mountains
24 1800PST
25 2000PST
CAZ089>092-098> East Central San Joaquin Valley--Indian
099 Wells Valley--Southeast Kern County
Desert--Southeast San Joaquin
Valley--Southwest San Joaquin
Valley--West Central San Joaquin Valley
25 1300PST
2200PST
Another winter storm arrived in Central
California on the 21st, bringing another
round of rain and mountain snow to the
region. SNOTEL observations in the
Southern Sierra Nevada indicated that
between one and two feet of snow fell
over the higher elevations on the 21st
and 22nd. Another storm reached
California on Christmas Eve, but there
was little (if any) break between the
instability showers behind the exiting
storm and the arrival of the new system.
Snow levels fell below 3000 feet with
this storm, with snow falling at
Kernville. Gusty winds moved through the
region on Christmas Day, with gusts to
around 40 mph hitting Hanford around
midday. Winds across the valley caused
isolated reports of downed powerlines
and small trees with peak wind gusts
near 50 mph with the cold front.
After this system passed, widespread
dense fog did not return for several
days. This lack of sky cover, combined
with light winds, allowed for good
radiational cooling. This resulted in
three days of freezing temperatures in
the central and southern San Joaquin
Valley, although widespread critical
temperatures were not reported.
Strong winds also occurred with this
storm across the Kern deserts with gusts
to near 50 mph common, especially near
and below canyons and passes.
26 0300PST
0800PST
CAZ089>092 East Central San Joaquin
Valley--Southeast San Joaquin
Valley--Southwest San Joaquin
Valley--West Central San Joaquin Valley
26 0300PST
0800PST
CAZ089>092 East Central San Joaquin
Valley--Southeast San Joaquin
Valley--Southwest San Joaquin
Valley--West Central San Joaquin Valley
28 0000PST
0800PST
After the last major winter storm of
December finally passed to the east of
central California, widespread dense fog
did not return for several days. This
lack of sky cover, combined with light
winds, allowed for good radiational
cooling. This resulted in three days of
sub-freezing temperatures in the central
and southern San Joaquin Valley,
although widespread critical
temperatures were not reported.
High pressure returned to the region by
the 30th, and widespread fog returned
with patchy dense fog over the central
and southern San Joaquin Valley just
after sunset during that evening. The
fog remained through the afternoon hours
of the 31st. The dense fog caused
visibilities to fall to between one-half
to one-quarter miles at times across
many sections of the San Joaquin Valley.
Cloud ceilings began to rise, and
visibility began to improve over the
central and south valley on New Year's
Eve, just before the start of the New
Year.
CALIFORNIA, Southeast
CAZ519-520 Eastern Sierra slopes of Inyo
County--Owens Valley
13 0430PST
0740PST
CAZ523 Western Mojave Desert
13 1649PST
High winds buffeted the Mojave Desert
and southern Great Basin ahead of a
strong cold front.
CAZ519-524-525 Eastern Mojave Desert--Eastern Sierra
slopes of Inyo County--Morongo Basin
15 0100PST
1700PST
A Pacific storm pushed moisture over
cold air in the Mojave Desert and
southern Great Basin, producing
significant snow as low as 3000 feet.
CAZ523>525 Eastern Mojave Desert--Morongo
Basin--Western Mojave Desert
17 0600PST
1800PST
Just two days after one storm system
produced heavy snow in the higher
elevations of the Mojave Desert and
southern Great Basin, a second storm
came through on a track slightly south
of the first one. This storm produced
heavy snow down to the desert floor over
much of the Mojave Desert. Snow was seen
as low as 1500 feet.
CAZ519 Eastern Sierra slopes of Inyo County
24 1800PST
25 2200PST
CAZ525 Morongo Basin
25 1450PST
A strong Pacific storm and associated
cold front traversed the Mojave Desert
and southern Great Basin, bringing heavy
snow to the higher elevations and high
winds to the lower elevations.
CALIFORNIA, Southwest
CAZ042 Orange County Coastal Plain
01 0000PST
0900PST
Dense fog resulted in flight delays and
auto accidents during a busy holiday
weekend.
CAZ048-056>058 Riverside County Mountains--San
Bernardino County Valley/The Inland
Empire--San Diego County
Mountains--Santa Ana Mountains and
Foothills
09 0630PST
1607PST
A 1032 mb high over the Great Basin,
combined with strong upper-level North
to Northeasterly winds, led to strong
gusty offshore winds over Southern
California which knocked down trees and
telephone poles.
CAZ060 Apple and Yucca Valleys
13 1205PST
1751PST
CAZ055 San Bernardino County Mountains
15 0200PST
1900PST
CAZ056-060 Apple and Yucca Valleys--Riverside
County Mountains
15 0600PST
1900PST
Orange County
Disneyland 15 0800PST
1030PST
Shortly after 0900 PST, the roof of a
classroom partially collapsed due to
heavy rain. Fourteen people, ages 17 to
50, were taken to the hospital with
minor injuries.
Orange County
1 NW Modjeska 15 1030PST
1130PST
Heavy rain in the Santiago Bum Area
caused mud and debris flows in Modjeska
Canyon. Many of the roads and yards that
were buried in mud by this debris flow
were impacted by similar debris flows
last winter. The amount of mud and rock
left in the wake of the debris flow was
extensive but damage to roads and
property was minor.
CAZ060 Apple and Yucca Valleys
15 1851PST
1951PST
CAZ055-058-060 Apple and Yucca Valleys--Riverside
County Mountains--San Bernardino County
Mountains--San Diego County Mountains
17 0000PST
2200PST
CAZ048-057 San Bernardino County Valley/The Inland
Empire--Santa Ana Mountains and
Foothills
17 1030PST
1312PST
San Diego County
1 WNW San Ysidro 17 1130PST
(NRS)Naf Imperial Be 1530PST
Significant flooding in the Tijuana
River Valley resulted in the deaths of a
Tijuana man and numerous ranch and farm
animals. At least 21 people had to be
rescued, including 6 by helicopter.
Three men were taken to a hospital and
treated for hypothermia. An estimated 70
horses were also rescued. Three horses
drowned before they could be rescued and
another horse was later euthanized due
to a leg injury. Fifteen goats and an
unknown number of dogs also died in the
flood. One farmer lost $600,000 dollars
worth of his crop while another lost
$10,000 dollars worth of watermelons.
The one human death occurred outside the
forecast area in Tijuana, Mexico. The
flash flood occurred when both the
Tijuana River and a nearby flood control
channel became dammed with sediment,
trash, and other debris.
A pair of winter storms associated with
a vigorous, cold upper-low brought
periods of high winds, heavy rain, and
snow to the region from late on the 13th
through the 17th. The first storm
brought rain to the power elevations and
gusty winds and very heavy snow to the
mountains and deserts. Blizzard
conditions forced the closure of
mountain highways while heavy rain
caused a debris flow in the Santiago
Burn Area. Snowfall accumulations from
this first storm measured 31 inches at
Big Bear Lake, 30 inches at Running
Springs, and 24 inches at Forest Falls.
The second storm on the 17th was notable
for its significant rains in the low
deserts and heavy snowfall in the
mountains and high deserts. Heavy rain
caused significant flooding in the
Tijauna River valley. Surface offshore
pressure gradients and mid-level
easterly flow brought dry air into the
region, resulting in widespread
evaporative cooling and snow levels down
to the desert floor. The winter storm
dumped 20 inches of snow in Pinon Hills,
18 inches of snow in Hesperia, Lucerne
Valley, Palomar Mountain, and Julian, 16
inches of snow in Idyllwild, 14 inches
in Victorville, and even 4 inches in
Shelter Valley. Local snowfall amounts
in excess of 2 feet occurred in the San
Bernardino Mountains. Total snowfall
accumulations at Big Bear Lake for the 5
day period ending on the 17th was an
impressive 54 inches.
CAZ056-060-061 Apple and Yucca Valleys--Coachella
Valley--Riverside County Mountains
25 1351PST
1707PST
A weakening upper-level low, along with
a strong Polar Jet over California,
brought periods of light to moderate
rain, mountain snow, and strong winds
over the Christmas holiday. Rainfall
amounts ranged from one-quarter to
one-half inch at the lower elevations,
and one to two and one-half inches in
the coastal slopes. No significant
snowfall was reported. High winds downed
trees and power lines in Encinitas, Palm
Desert, and Palm Springs.
CALIFORNIA, Upper
CAZ085 Modoc County
14 1900PST
15 0700PST
Post-frontal showers behind the first
major winter storm of the season brought
locally significant snow to Southwest
Oregon and Northern California. Winter
Weather Advisories were in effect over
most of the area. Heavy Snow reports
were isolated, so this was for the most
part an Advisory event.
CAZ082 South Central Siskiyou County
18 0900PST
2100PST
The second major winter storm of the
year moved into Southern Oregon and
Northern California at this time ... hot
on the heels of the first one. The main
impact of the storm was the low snow
levels which created widespread travel
difficulties ... but heavy snow was
reported in the mountains as well. A
Winter Storm Warning for Heavy Snow was
issued for California zone CAZ080 at
17/0334 PST, effective from
18/0400-19/0000 PST. It was shortened to
18/2200 PST at 18/1032 PST,
then expired at 18/2200 PST. A Winter
Storm Warning for Heavy Snow was issued
for California zones CAZ081/082/083/084
at 17/0334 PST, effective from
18/1000-19/0000 PST. It was shortened to
18/2200 PST at 18/1032 PST,
then cancelled at 18/1307 PST. A Winter
Storm Warning for Heavy Snow was issued
for California zone CAZ085 at 18/0336
PST, effective from 18/1000-19/0000
PST. It was shortened to 18/2200 PST at
18/1032 PST, then cancelled
at 18/1307.
24 1800PST
2200PST
Another winter storm hit Southern Oregon
and Northern California during this
interval, A Winter Storm Warning for
Heavy Snow was issued for California
zone CAZ080 above 2000 feet at 23/1155
PST, effective from 23/2200 until
23/1600 PST. The effective time was
extended to 25/1600 PST at 24/0517 PST,
and changed to 24/1600 through 25/1600
PST at 24/1023 PST. The warning was
cancelled at 24/1259 PST. A Winter Storm
Warning for Heavy Snow was issued for
California zone CAZ082 at 24/2134 PST,
effective from 24/2134 until 25/1900
PST. The warning was cancelled at
25/0933 PST.
CALIFORNIA, West South Central
CAZ053-054 Los Angeles County Mountains Excluding
the Santa Monica Range--Ventura County
Mountains
09 0553PST
1053PST
Strong northerly winds developed across
the mountains of Ventura and Los Angeles
counties. Winds gusting as high as 76
MPH were reported.
Santa Barbara County
3 NNW El Encanto 15 0100PST
0800PST
Bands of showers produced intense
rainfall rates in and around the Gap
Fire bum area. The West Camino Cielo
sensor reported 1.47 inches of rainfall
in one hour. With such intense rainfall
rates, mud and debris flows were
reported. Fortunately, areas affected by
the mud and debris flows were protected
by a fence. Behind the fence, up to 6
feet of mud and debris was reported.
Santa Barbara County
3 NE Santa Barbara 15 0200PST
0800PST
Bands of showers produced intense
rainfall rates across the Tea Fire bum
area. Rainfall rates in excess of 0.50
inches per hours were reported. The
intense showers produced mud and debris
flows which forced the closure of East
Mountain Drive south of the burn scar.
CAZ053-054 Los Angeles County Mountains Excluding
the Santa Monica Range--Ventura County
Mountains
15 0700PST
A significant early-season winter storm
brought significant precipitation and
wind to Central and Southern California.
Rainfall totals across the forecast area
ranged between 1 and 3 inches. Along
with the rainfall totals, the rainfall
rates were high enough to produce mud
and debris flows near some bum areas. In
the mountains, significant winter storm
conditions were reported. Snowfall
totals between 10 and 16 inches were
reported. In addition, winds gusting to
around 55 mph produce areas of reduced
visibilities in snow and blowing snow.
CAZ054-059 Antelope Valley--Los Angeles County
Mountains Excluding the Santa Monica
Range
17 1500PST
1643PST
A extremely cold early-season storm
heavy snow and strong winds to the
mountains and deserts of Los Angeles
county. Cold air associated with the
storm dropped snow levels down to around
1500 feet. With such low snow levels,
significant snowfall accumulations were
reported across the Antelope Valley
where elevations are around 2500 feet.
In addition to the snowfall, very strong
northeast winds gusting to between 35
and 55 MPH were reported.
CAZ053-054 Los Angeles County Mountains Excluding
the Santa Monica Range--Ventura County
Mountains
26 0600PST
Another early-season storm brought
winter storm conditions to the mountains
of Ventura and Los Angeles counties.
Snowfall totals up to 12 inches were
reported along with winds gusting to 55
MPH.
CALIFORNIA, Western
Santa Cruz County
3 ENE Mesa Vlg 15 0700PST
0701PST
A wet mountain road caused a man to veer
off highway 152 near Watsonville
resulting in his death.
CAZ508 San Francisco Bay Shoreline
15 1740PST
1840PST
CAZ507 North Bay Mountains
16 0700PST
1100PST
Sonoma County
2 SW Sonoma 16 0700PST
1 SW Schellville 0701PST
Heavy rain caused a fatality of a 32
year-old man when his vehicle collided
with another vehicle. Highways 116 and
121 were closed for about three hours
after the collision.
CAZ508 San Francisco Bay Shoreline
17 0630PST
0730PST
A cold core low pressure system produced
winter storm conditions causing low
elevation snow, minor flooding and
isolated strong wind through the period
40162 through 17, 2009. Snow amounts
ranged from a few inches in the hills
around the San Francisco Bay Area to as
high as nine inches at Mount Hamilton.
CAZ508-513 San Francisco Bay Shoreline--San
Francisco Peninsula Coast--Santa Clara
Valley Including San Jose
25 0200PST
1100PST
A strong fast moving low pressure system
brought strong southerly winds and
mountain snow to the San Francisco Bay
area. This holiday wind event toppled
trees and left many with out power in
San Mateo and Santa Clara counties.
COLORADO, Central and Northeast
COZ035-038>039- Boulder & Jefferson Counties below 6000
041-043 Feet/West Broomfield County--Central &
South Weld County-- Elbert/Central &
east Douglas Counties above 6000
Feet--Jefferson & West Douglas Counties
above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties below 9000
Feet--Larimer & Boulder Counties between
6000 & 9000 Feet--Larimer County below
6000 Feet/Northwest Weld County
04 0230MST
2000MST
A storm system brought moderate to heavy
snowfall to areas in and near the Front
Range Foothills, Urban Corridor and
Palmer Divide. Storm totals included: 10
inches, 4 miles south of Boulder; 8.5
inches, 3 miles southwest of Golden; 8
inches, 12 miles southeast of Aurora; 7
inches at Boulder, 1 mile east of
Buckhorn Mountain, Fort Collins and
Genessee. A localized band of heavy snow
also produced nearly 7 inches of snow in
and around Greeley.
COZ034 South & Southeast Grand/West Central &
Southwest Boulder/Gilpin/Clear
Creek/Summit/North & West Park Counties
above 9000 Feet
05 1100MST
An avalanche partially buried a skier on
Berthoud Pass. The skier suffered minor
injuries.
06 1330MST
A second avalanche struck a skier on
Berthoud Pass. The person was caught and
carried for some distance, but was not
injured.
COZ036-039-041 Boulder & Jefferson Counties below 6000
Feet/West Broomfield
County--Elbert/Central & east Douglas
Counties above 6000 Feet--Jefferson &
West Douglas Counties above 6000
Feet/Gilpin/Clear Creek/Northeast Park
Counties below 9000 Feet
08 1400MST
09 0500MST
COZ040 North Douglas County below 6000
Feet/Denver/West Adams & Arapahoe
Counties/east Broomfield County
08 1400MST
09 0500MST
A Pacific storm system, coupled with
upslope winds; produced heavy snow in
and near the foothills of Boulder,
Jefferson and Douglas Counties, and
along the Palmer Divide. In the Front
Range Foothills, storm totals included:
15 inches, 3 miles southwest of
Roxborough State Park and Strontia
Springs Dam; 14 inches at Ken Caryl; 13
inches, 3 miles southwest of Conifer,
Genesee, 3 miles southeast of Indian
Hills, 6 miles west of Littleton and
Lookout Mountain; 11 inches, 3 miles
southwest of Morrison; 10 inches, 7
miles southwest of Boulder and 6 miles
southwest of Evergreen. In Boulder and
in locations west and south of Denver,
storm totals included: 13 inches near
Kassler, 10 inches, 2 miles southwest of
Larkspur; 8.5 inches, 8 miles south of
Franktown, Louisville and 7 miles south
of Sedalia; 8 inches in Boulder and 1
mile east of Castle Rock, 7 inches at
Lafayette and 3 miles south of
Littleton, 6.5 inches in Arvada and 3
miles east of Highlands Ranch, with 6
inches at Lakewood and Wheat Ridge.
COZ034 South & Southeast Grand/West Central &
Southwest Boulder/Gilpin/Clear
Creek/Summit/North & West Park Counties
above 9000 Feet
13 1200MST
14 0500MST
A storm system brought heavy snow to
portions of the North Central Mountains.
The heaviest snowfall was reported in
Summit County. Storm totals included: 13
inches at the Eisenhower Tunnel, 11.5
inches, 7.5 miles northwest of
Silverthome, with 8 inches at Frisco.
COZ035 Larimer & Boulder Counties between 6000
& 9000 Feet
25 1400MST
Strong winds in Estes Park caused a roof
under construction at the YMCA of the
Rockies to collapse. The wind caught the
end section of the roof truss, and in a ...
Source: HighBeam Research, Storm data and unusual weather phenomena.(CALIFORNIA-FLORIDA)(Report)