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NOUS45 KBOU 170859
PNSBOU
COZ030>051-172300-

Public Information Statement
National Weather Service Denver/Boulder CO
259 AM MDT WED OCT 17 2018

...Today in metro Denver weather history...

15-17 In 1989...an autumn snowstorm hit metro Denver with 2 to 6
        inches of snow.  Snowfall totaled 4.4 inches at Stapleton
        International Airport where the maximum snow depth on the
        ground was only 3 inches due to melting and north winds
        gusted to 25 mph on the 15th.  The heavy wet snow caused
        leafy branches to sag onto power lines...resulting in a
        number of power outages.  Five thousand homes were blacked
        out in Boulder on the 16th.  Up to a foot of snow fell in
        the higher foothills with 19 inches recorded at Echo Lake.
16-17 In 1990...strong downslope winds raked the eastern foothills.
        Wind gusts from 60 to 75 mph were common.  Strong winds in
        metro Denver resulted in wave damage to a dock used to moor
        several private sail boats at Cherry Creek Reservoir.
        Damage was confined to the dock and two anchor cables.
        A northwest wind gust to 43 mph was recorded at Stapleton
        International Airport.
17    In 1878...strong winds reached sustained speeds of 48 mph.
      In 1988...a wind gust to 62 mph was recorded in central
        Boulder.  The strong winds caused a few brief power
        outages.  An old smoldering brush fire in the foothills
        west of Boulder was re-ignited by the wind gusts.
      In 1994...winds gusted to 85 mph atop Squaw Mountain...5 miles
        south of Idaho Springs.
      In 2006...a potent storm system brought heavy snowfall to the
        mountains and eastern foothills.  Snowfall totals in the
        foothills included:  14 inches at Blackhawk...13.5 inches
        near Idaho Springs...13 inches at Cabin Creek...12.5 inches
        at Aspen Springs and Echo Lake...11.5 inches at Georgetown
        and Rollinsville...10.5 inches near Jamestown...and 10 inches
        at Grant and Lake Eldora.  Lesser snow amounts...from 4 to 9
        inches...were recorded elsewhere in the foothills.  Snowfall
        totaled only 3.5 inches in the Denver Stapleton area.  At
        Denver International Airport...north winds gusted to 31 mph.
      In 2012...A brief but powerful windstorm associated with a
        fast moving cold front across the Urban Corridor and
        adjacent plains during in the evening. Peak wind gusts
        ranging from 58 to 71 mph downed trees and power lines
        which damaged homes and vehicles. Several temporary
        structures were also damaged. Approximately fifty thousand
        were left without power in the Denver...Fort Collins and
        Greeley areas. Some schools were closed the following day
        until power could be restored. Around the Denver area...peak
        wind gusts included: 69 mph in Golden...64 mph at Littleton...
        62 mph at Buckley AFB and in Denver...near the intersecton of
        Walnut St. and Interstate 25...and Longmont; 59 mph at
        Centennial Airport...58 mph at Denver City Park...Highlands
        Ranch.  At Denver International Airport...a peak wind gust to
        35 mph was observed from the northwest.
17-19 In 1908...a moist...heavy...wet snowfall totaled 13.0 inches in
        downtown Denver over the 3 days.  Rain from early morning
        on the 17th changed to snow by late afternoon and continued
        through the late morning of the 19th.  Due to temperatures
        in the 30's and melting...the most snow on the ground was
        only 5.0 inches at 6:00 PM on the 18th.  Northwest to
        northeast winds were sustained between 12 and 20 mph during
        the storm.  Precipitation totaled 1.82 inches.

$$
NOUS45 KBOU 171825
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PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
1225 PM MDT Wed October 17 2018

      Widespread high winds are typical for a Colorado winter

Winter Weather Preparedness Week in Colorado continues through this
Saturday

The two main causes of high winds in Colorado during the cold season
are the air pressure difference between strong low pressureand cold
high pressure systems, and chinook winds developing across the Front
Range and other eastern mountain ranges.

Dangers from high winds include flying debris, reduced visibility
due to dust or snow, damaged or destroyed structures, downed power
lines, and overturned vehicles.

If high winds are forecast for your area, you should bring
lightweight objects indoors, tie them down outdoors, or move them so
they do not become dangerous objects if picked up and thrown.

For more detailed information about high winds during the winter, go
to:

www.weather.gov/boulder

and, in the News Headlines, click on the preparpedness week story,
then click on Wednesday's entry.

Greg Hanson WFO Boulder

$$

NOUS45 KBOU 180859
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COZ030>051-182300-

Public Information Statement
National Weather Service Denver/Boulder CO
259 AM MDT THU OCT 18 2018

...Today in metro Denver weather history...

17-19 In 1908...a moist...heavy...wet snowfall totaled 13.0 inches in
        downtown Denver over the 3 days.  Rain from early morning
        on the 17th changed to snow by late afternoon and continued
        through the late morning of the 19th.  Due to temperatures
        in the 30's and melting...the most snow on the ground was
        only 5.0 inches at 6:00 PM on the 18th.  Northwest to
        northeast winds were sustained between 12 and 20 mph during
        the storm.  Precipitation totaled 1.82 inches.
18    In 1875...the haze was so dense that the mountains were not
        visible from downtown Denver for most of the day.
      In 1937...a vigorous cold front produced north winds sustained
        to 32 mph with gusts to 41 mph.  Rain and snow totaled
        0.16 inch.  Post-frontal snowfall of 0.8 inch was the
        only snowfall of the month.
      In 1960...post-frontal upslope rain changed to snow.
        Snowfall was 2.2 inches at Stapleton Airport where
        precipitation (rain and melted snow) totaled 1.58 inches.
      In 1971...wind gusts to 48 mph were recorded in downtown
        Boulder.  West winds gusted to 30 mph at Stapleton
        International Airport.
      In 1999...heavy snow developed in the foothills west of metro
        Denver with lesser amounts across the city.  Snowfall totals
        included:  7 inches near Nederland...6 inches in Boulder...and
        5 inches at Chief Hosa.  Only 1.2 inches of snow were
        measured at the site of the former Stapleton International
        Airport.
18-23 In 2003...an extended warm spell resulted in 5 new temperature
        records.  The high temperature of 84 degrees on the 18th
        equaled the record high for the date.  High temperatures
        of 86 degrees on the 19th...83 degrees on the 21st...and 84
        degrees on the 22nd were record highs for the dates.  Low
        temperature of 49 degrees on the 23rd was a record high
        minimum for the date.  Low temperatures during the period
        were in the 40's and lower 50's.

$$




Office: GJT NOUS45 KGJT 161351 PNSGJT Public Information Statement Preliminary Record Event Report National Weather Service Grand Junction CO 750 AM MDT Tue Oct 16 2018 ...Record Low Temperature Tied this Morning... Across Western Colorado: In Rifle, the low temperature this morning was 18 degrees. This ties the previous record of 18 which was last set in 2017. $$ NOUS45 KGJT 161914 PNSGJT Public Information Statement Preliminary Record Event Report National Weather Service Grand Junction CO 113 PM MDT Tue Oct 16 2018 ...Record Low Temperatures This Morning... Across Western Colorado... At 4 miles southwest of Craig, the low temperature this morning was 12 degrees. This set a new record low temperature for October 16, breaking the previous record of 19 degrees, set in 2017. In the Ouray area, the low temperature this morning was 17. This set a new record low for the day, breaking the previous record of 20, set in 1984. In the Rifle area, the low was 18, tying the record low for the day, last set in 2017. Across Eastern Utah... At Arches National Park, the low temperature was 33, tying the record low for the day, last set in 2017. $$ NOUS45 KGJT 162200 PNSGJT PUBLIC INFORMATION STATEMENT NATIONAL WEATHER SERVICE GRAND JUNCTION CO 400 PM MDT TUE OCT 16 2018 WHAT DOES THAT WARNING MEAN? When a warning is issued during the winter season, will you know what it means, and will you know how to respond. During this Colorado Winter Weather Preparedness Week, please become familiar with our list of potentially life-saving winter weather products. OUTLOOKS A Hazardous Weather Outlook is issued daily by each National Weather Service office serving Colorado, providing information on potentially hazardous weather out to 7 days into the future. WATCHES AND WARNINGS A Winter Storm Watch is issued when hazardous winter storm conditions are possible within the next 3 to 4 days, but the timing, intensity, or occurrence may still be uncertain. In contrast, a Winter Storm Warning is issued for potentially life-threatening winter storm conditions, such as heavy snowfall or a combination of snowfall and blowing snow, which are likely to occur within the next 1 to 2 days. ADVISORIES Advisories for winter weather are issued for potentially hazardous conditions which are considered more of a nuisance than a life-threatening situation. However, if caution is not taken the advisory events could become life-threatening. A list of winter weather warning and advisory products, as well as the criteria for each type of warning and advisory, can be found at weather.gov/gjt by clicking on the “Preparedness” link under the “WEATHER SAFETY” menu area near the bottom of the page. Winter Weather Preparedness Week in Colorado will continue through Saturday. Jim Pringle Warning Coordination Meteorologist National Weather Service Grand Junction CO NOUS45 KGJT 171852 PNSGJT COZ001>014-017>023-UTZ022>025-027>029-180652- Public Information Statement National Weather Service Grand Junction CO 1252 PM MDT Wed Oct 17 2018 A low pressure storm system pushing into southern Utah from Arizona kicked off rain and snow showers across southeast Utah and southwest Colorado Tuesday evening into Wednesday morning. Following are 24 hour precipitation reports as of Wednesday morning. Most snow that fell during this period was above 10,000 feet, where 1 to 2 inches fell. Keep in mind that all reports are preliminary. ...SNOWFALL REPORTS... Location Amount Time/Date Provider ...Colorado... ...La Plata County... Durango 4.8WSW T in 0700 AM 10/17 COCORAHS ...Montezuma County... Cortez 11NW T in 0700 AM 10/17 UCOOP ...Ouray County... Ouray 0.23NNW T in 0649 AM 10/17 COCORAHS ...San Juan County... Silverton T in 0800 AM 10/17 COCORAHS ...Utah... Monticello no. 2 0.5 in 0700 AM 10/17 COOP ...RAINFALL REPORTS... Location Amount Time/Date Provider ...Colorado... ...Archuleta County... 4 NE Arboles 0.03 in 1134 AM 10/17 RAWS Sandoval Mesa, Arboles 7NE 0.02 in 1212 PM 10/17 RAWS Chimney Rock 3N T in 0700 AM 10/17 COCORAHS ...Dolores County... Dove Creek 12.4SSW 0.18 in 0700 AM 10/17 COCORAHS Salter, Dolores 12NNW 0.12 in 1124 AM 10/17 RAWS Cahone 12NE 0.10 in 1155 AM 10/17 RAWS Rico 0.03 in 1215 PM 10/17 CWOP Groundhog Rsvr nr Dunton 0.01 in 1115 AM 10/17 GOES ...Eagle County... Gore Creek at Vail 0.06 in 1145 AM 10/17 GOES Avon 0.01 in 1220 PM 10/17 CWOP Vail 19SSW 0.01 in 1220 PM 10/17 CWOP Avon 1.1SE T in 0845 AM 10/17 COCORAHS ...Gunnison County... Sapinero 3ENE 0.10 in 1145 AM 10/17 HADS Almont 1WSW 0.02 in 1200 PM 10/17 HADS Colona 11ESE 0.01 in 1200 PM 10/17 HADS Crested Butte 0.01 in 1200 PM 10/17 HADS Somerset 2E T in 1200 PM 10/17 GOES ...Hinsdale County... Rio Grande Rsvr 0.02 in 1200 PM 10/17 GOES ...La Plata County... La Plata Rvr, Cherry Crk Dtc 0.25 in 1115 AM 10/17 HADS Log Chute, Trimble 5SW 0.22 in 1158 AM 10/17 RAWS Hesperus 6.9S 0.21 in 0700 AM 10/17 COCORAHS Redmesa 4.2NW 0.20 in 0910 AM 10/17 COCORAHS Hesperus 7.8SW 0.19 in 0700 AM 10/17 COCORAHS Redmesa 3NW 0.18 in 1212 PM 10/17 CWOP Hesperus 14.1SSW 0.16 in 0800 AM 10/17 COCORAHS 2 ENE Durango 0.14 in 0700 AM 10/17 COCORAHS Durango 4.8WSW 0.14 in 0700 AM 10/17 COCORAHS Animas River, CO/NM st line 0.14 in 1200 PM 10/17 GOES Durango 0.13 in 1218 PM 10/17 CWOP Hesperus 4.9SE 0.13 in 0700 AM 10/17 COCORAHS Durango 0.8SSW 0.12 in 0700 AM 10/17 COCORAHS 4 WNW Bayfield 0.12 in 1140 AM 10/17 RAWS Durango 0.12 in 0649 AM 10/17 COCORAHS Durango 0.12 in 0700 AM 10/17 COCORAHS Durango 4SSE 0.11 in 0700 AM 10/17 UCOOP Durango 7S 0.11 in 0700 AM 10/17 COCORAHS Durango 2.8S 0.11 in 0700 AM 10/17 COCORAHS Durango 0.11 in 0830 AM 10/17 COOP Durango 4.9ESE 0.10 in 0700 AM 10/17 COCORAHS Durango La Plata Cnty Airpor 0.08 in 1053 AM 10/17 ASOS Mesa Mtn, Ignacio 5SW 0.08 in 1209 PM 10/17 RAWS Bayfield 3ESE 0.07 in 1220 PM 10/17 CWOP Hermosa 2SW, Trimble 0.07 in 1215 PM 10/17 CWOP Ignacio 2N 0.07 in 0700 AM 10/17 COCORAHS Ignacio 4NE 0.07 in 1145 AM 10/17 USGS Ignacio 8E 0.06 in 0700 AM 10/17 COOP Ignacio 1NNE 0.06 in 0700 AM 10/17 COCORAHS Vallecito 1E 0.02 in 1200 PM 10/17 HADS Vallecito 7NNE 0.01 in 1145 AM 10/17 USGS ...Mesa County... 10 E Gateway 0.01 in 1126 AM 10/17 RAWS ...Moffat County... Browns Park Refuge 0.02 in 1200 PM 10/17 GOES Little Snake, Maybell 17W T in 1200 PM 10/17 HADS ...Montezuma County... Towaoc 4NNW 0.20 in 1136 AM 10/17 RAWS Chapin Mesa 3N, M Verde NP 0.19 in 1130 AM 10/17 RAWS Mancos Rvr, Mancos 1E 0.18 in 1200 PM 10/17 GOES Mesa Verde Natl Park 0.17 in 0700 AM 10/17 COOP Dolores 0.15 in 1218 PM 10/17 CWOP Cortez 8SE 0.15 in 1100 AM 10/17 HADS Mancos 3WNW 0.14 in 0815 AM 10/17 COCORAHS Mockingbird, Ylw Jacket 9SW 0.14 in 1144 AM 10/17 RAWS Dolores 0.14 in 0700 AM 10/17 COCORAHS Cortez 2.0NW 0.13 in 0800 AM 10/17 COCORAHS Cortez 2.3NW 0.13 in 0700 AM 10/17 COCORAHS Morefield, Mancos 7WSW 0.13 in 1140 AM 10/17 RAWS Dolores 4.0SSW 0.12 in 0700 AM 10/17 COCORAHS Yellow Jacket 1NW 0.12 in 1000 AM 10/17 COCORAHS Cortez 1E 0.11 in 0751 AM 10/17 COCORAHS Cortez 1.2SW 0.11 in 0700 AM 10/17 COCORAHS Cortez 5.6NW 0.11 in 0700 AM 10/17 COCORAHS Cortez 11NW 0.10 in 0700 AM 10/17 UCOOP Dolores 4.8ENE 0.10 in 0700 AM 10/17 COCORAHS Cortez Municipal Airport 0.08 in 1053 AM 10/17 ASOS Mancos 3NW 0.06 in 1130 AM 10/17 HADS ...Montrose County... Paradox 2N T in 0600 AM 10/17 COOP ...Ouray County... Camp Bird 2WNW 0.03 in 1215 PM 10/17 HADS Telluride 7NNW 0.02 in 1215 PM 10/17 HADS Red Mtn 2NNE 0.01 in 1215 PM 10/17 HADS Ouray 0.23NNW T in 0649 AM 10/17 COCORAHS Ouray T in 0649 AM 10/17 COOP ...Pitkin County... Meridith 5W 0.01 in 1200 PM 10/17 HADS ...Rio Blanco County... White River Nr Meeker 0.01 in 1200 PM 10/17 GOES ...Routt County... Yampa Ranger Stn 0.01 in 1200 PM 10/17 COOP ...San Juan County... Silverton 0.03 in 1216 PM 10/17 CWOP Silverton 0.01 in 0800 AM 10/17 COCORAHS ...San Miguel County... Redvale 22.8SW 0.02 in 0800 AM 10/17 COCORAHS ...Utah... ...Grand County... Moab 4WNW 0.16 in 0600 AM 10/17 UTAH DOT Moab 1SE 0.05 in 1216 PM 10/17 CWOP Canyonlands Field Airport 0.02 in 1053 AM 10/17 ASOS Moab 1.3NW T in 0800 AM 10/17 COCORAHS ...San Juan County... Monticello 5SSE 0.34 in 1217 PM 10/17 CWOP Monticello no. 2 0.19 in 0700 AM 10/17 COOP Big Indian Valley 0.08 in 1120 AM 10/17 RAWS La Sal 3NW 0.05 in 1136 AM 10/17 RAWS Canyonlands the Neck 0.03 in 0710 AM 10/17 COOP Observations are collected from a variety of sources with varying equipment and exposures. We thank all volunteer weather observers for their dedication. Not all data listed are considered official. $$
Office: DEN
Office: PUB