High winds developed briefly in the early morning hours of the 10th over eastern Larimer County. Peak wind gusts included: 90 mph, 3 miles south of Livermore; 82 mph, 6 miles east of Buckeye; with 73 mph at Natural Fort and along Interstate 25 near the Wyoming border.
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The episode as NWS BOU wrote it up.
High winds developed briefly in the early morning hours of the 10th over eastern Larimer County. Peak wind gusts included: 90 mph, 3 miles south of Livermore; 82 mph, 6 miles east of Buckeye; with 73 mph at Natural Fort and along Interstate 25 near the Wyoming border.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Denver/Boulder, CO wrote its last area forecast discussion before the first event at Jan 9, 8:51 PM MST, 4 hours 29 minutes earlier.
Area Forecast Discussion National Weather Service Denver/Boulder CO 851 PM MST Mon Jan 9 2017 .UPDATE... Issued at 850 PM MST Mon Jan 9 2017 Radar shows convective development along and ahead of cold front now just reaching our northern mountains. Lightning data even shows a few lightning strikes over northwest Colorado. Snow intensity has picked up in the convective bands with 1-2 inch per hour on some of the snowstakes...and this heavier convective snow will become more widespread through midnight as the front moves through...already blossoming on the Grand Junction Radar. Airmass is quite unstable on the 00Z Grand Junction and Salt Lake City soundings, so convective development no surprise. Very high precipitable water with nearly 0.50 inch and latest Integrated PW from GPS-MET shows values near 0.60 inch in NW Colorado now. This all spells a very efficient snow producer for the mountains so have bumped up amounts a couple more inches for tonight...and expectation for an average of 1" per hour rates in the favored mountain locals. Should see a marked decrease early Tuesday morning as drier air arrives, but still some accumulation. At this time, expect sufficient improvement for warning to expire on time at 11 AM. Until then, driving conditions will be difficult if not impossible overnight into very early Tuesday across the northern Colorado mountains. On the plains, a few showers already developing in the northeast corner of the state. Along the Front Range, should see a few showers drift off with the approach and passage of the mid level front. Will push the low chance of showers a bit further east as airmass is quite unstable. && .SHORT TERM...(This evening through Tuesday) Issued at 345 PM MST Mon Jan 9 2017 First order of business...the threat of high winds in and near the Front Range has diminished considerably in the last hour or two. The cross mtn pres gradient continues to weaken and the lee slope mtn wave is showing signs of breaking down. Wind gusts overall in the foothills have fallen below 50 mph and below 30 mph on the nearby plains...although still seeing gusts to around 50 mph over elevated terrain on southwest Elbert and southeast Douglas counties. Small scale models show wind speeds decreasing in this area over the next couple of hours. Next order of business...attention shifts west to the increasing lift and instability due to cooling aloft associated with a shortwave trough now passing over Utah and western Colorado. Strong southwest flow aloft in advance of this wave is forecast to shift to a west-northwest component overnight and with the shift cooling at all levels. The shift in winds should enhance orographic snowfall in the northern mtn ranges starting this evening where 1-2 inch per hour snowfall rates are anticipated. Snow levels between 8000 and 9000 ft at the present time will lower to the valley floors after dark. That's when the light rain in the Kremmling area should chance to snow. Axis of max forcing aligned across northern Utah where radar is detecting a line of intense convection along sfc cold front. It is this feature with the cooling and forcing aloft that should help to enhance high country snowfall this evening. Winds not expected to be as strong in the mtns tonight...but gusts in the 35-50kt range a good bet... especially around passage of the cold front. Meanwhile on the plains could see a few showers move off the foothills overnight. Temperatures should remain warm enough for most of the night to keep precipitation as rain. Should rain chance to snow...any accumulation should be minimal at best. For Tuesday...should see snowfall in the high country winding down through the morning as drier and more stable air moves in on the back side of the upper trough. Should still see areas of snow showers but additional accumulations will be on the low side. On the plains...another dry day but slightly cooler and more clouds with passing trough. Winds also much lighter...esply along the foothills. .LONG TERM...(Tuesday night through Monday) Issued at 345 PM MST Mon Jan 9 2017 Wintry weather looks to continue in the mountains for much of this week under a continued...moist westerly flow over Colorado. The next bump of moisture will be late Tuesday night and Wednesday for the mountains as next upper level jet plows into Southwest Colorado. Could need further hilites for snow in the mountains but will not issue one for now due to current warning ongoing in the mountains. Cold front will back into the plains of northeast Colorado on Wednesday afternoon with colder airmass behind it. Have lowered temperatures for the far plains during the afternoon. Another front moves in later Thursday and Friday with colder temperatures for all the plains with even a slight chance for snow on the plains. Finally some drying and warming for the weekend as the upper trof moves south and east of Colorado. && .AVIATION...(For the 06Z TAFS through 06Z Tuesday night) Issued at 850 PM MST Mon Jan 9 2017 VFR conditions next 24 hours. Should see isolated to scattered rain showers move off the Front Range through midnight, then temperatures aloft get cold enough for a low threat of snow showers before significant drying and subsidence moves across the Front Range. Winds quite variable between northwest and southwest and could be gusty to 25+ knot gusts possible due to showers in vicinity and downslope. Similar winds expected Tuesday, although a few gusts could push 30 knots if sufficient mixing occurs. && .BOU WATCHES/WARNINGS/ADVISORIES... Winter Storm Warning until 11 AM MST Tuesday for COZ031-033-034. && UPDATE...Barjenbruch SHORT TERM...Baker LONG TERM...Entrekin AVIATION...Barjenbruch
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER/BOULDER CO 1111 AM MST MON JAN 9 2017 COZ030>051-101815- JACKSON COUNTY BELOW 9000 FEET- WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET- GRAND AND SUMMIT COUNTIES BELOW 9000 FEET- SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/ NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET- SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/ GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE 9000 FEET-LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- CENTRAL AND SOUTHEAST PARK COUNTY- LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY- NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY- ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY- CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES- NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN COUNTY- SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY- LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY- 1111 AM MST MON JAN 9 2017 ...INCLEMENT WINTER WEATHER IN THE HIGH COUNTRY AND VERY STRONG AND GUSTY CHINOOK WINDS ALONG THE FRONT RANGE WILL CONTINUE TODAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT SNOW WILL INCREASE IN THE HIGH COUNTRY THIS AFTERNOON WITH THE NEXT WAVE OF MOISTURE LADEN AIR MOVING UP FROM THE FOUR CORNERS REGION. SNOWFALL MAY BE HEAVY AT TIMES PARTICULARLY ON THE HIGH PASSES AND ON WEST FACING MOUNTAIN SLOPES WHERE ANOTHER 8 TO 14 INCHES OF HEAVY WET SNOW IS LIKELY BY TUESDAY MORNING. THE HIGHER ELEVATIONS OF SUMMIT...GRAND AND WESTERN JACKSON COUNTIES COULD SEE AS MUCH AS 20 INCHES PILE UP ON FAVORED WEST EXPOSURES. THE STRONG AND GUSTY WINDS IN THE MOUNTAINS WILL CONTINUE TO PRODUCE BLOWING AND DRIFTING SNOW CREATING NEAR WHITEOUT CONDITIONS AT TIMES. FURTHERMORE...THE STRONG AND GUSTY CHINOOK WINDS OF 50 TO 75 MPH WILL ALSO CONTINUE IN AND NEAR THE FRONT RANGE FOOTHILLS UNTIL LATE THIS AFTERNOON. GUSTY WEST WINDS WILL SPREAD OUT ACROSS THE PLAINS THIS AFTERNOON WITH POSSIBLE GUSTS TO 45 MPH. THE WINDS WILL DIMINISH AT LOWER ELEVATIONS THIS EVENING...BUT WILL CONTINUE OVER THE HIGHER MOUNTAINS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY OCCASIONAL SNOW IS EXPECTED TO CONTINUE OVER THE MOUNTAINS TUESDAY INTO FRIDAY...HEAVIEST EARLY TUESDAY MORNING AND AGAIN ON WEDNESDAY. DRIER WEATHER IS EXPECTED FOR THE MOUNTAINS FOR THIS WEEKEND. THE PLAINS WILL BE MAINLY DRY...BUT THERE IS SLIGHT CHANCE FOR LIGHT SNOW AND COLDER TEMPERATURES FOR THURSDAY NIGHT INTO FRIDAY. STRONG DOWNSLOPE WINDS ARE EXPECTED AGAIN FOR THE MOUNTAINS...FOOTHILLS AND ADJACENT PLAINS FROM TUESDAY NIGHT AND WEDNESDAY. .SPOTTER INFORMATION STATEMENT... REPORTS OF SNOWFALL OR STRONG WINDS WILL BE APPRECIATED. BAKER/ENTREKIN
The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2017Every state in 2017This day in weather historyWarnings in Colorado, January 2017
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 674497.