Alert archive / Colorado / High Wind Warnings in 2017
High Wind Warning 14, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this high wind warning at Dec 28, 2017, 10:07 AM MST for 10 counties in Colorado. It took effect at Dec 29, 2017, 12:00 AM MST. It was in force for 15 hr. 19 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Dec 28, 2017, 10:07 AM MST (17:07 UTC)
- In effect from
- Dec 29, 2017, 12:00 AM MST
- Expired
- Dec 29, 2017, 3:00 PM MST
- In force
- 15 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Boulder County, CO, Clear Creek County, CO, Douglas County, CO, Gilpin County, CO, Grand County, CO, Jackson County, CO, Jefferson County, CO, Larimer County, CO, Park County, CO, Summit County, CO
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Dec 29, 1:49 AM MST | NON-TSTM WND GST 71 | 1 N Georgetown, CO | |
| Dec 29, 2:24 AM MST | NON-TSTM WND GST 76 | 2 Wnw Aspen Springs, CO | |
| Dec 29, 2:25 AM MST | NON-TSTM WND GST 89 | 1 Ne Aspen Springs, CO | |
| Dec 29, 2:29 AM MST | NON-TSTM WND GST 78 | 1 S Dumont, CO | |
| Dec 29, 2:35 AM MST | NON-TSTM WND GST 69 | 3 N Eldorado Springs, CO | |
| Dec 29, 3:12 AM MST | NON-TSTM WND GST 76 | 3 Sw Jefferson, CO | |
| Dec 29, 3:20 AM MST | NON-TSTM WND GST 75 | Sse Aspen Springs, CO | |
| Dec 29, 3:55 AM MST | NON-TSTM WND GST 74 | 2 Nnw Glen Haven, CO | |
| Dec 29, 3:58 AM MST | NON-TSTM WND GST 70 | 2 Ene Dumont, CO | |
| Dec 29, 4:08 AM MST | NON-TSTM WND GST 83 | 4 Ene Nederland, CO | |
| Dec 29, 4:30 AM MST | NON-TSTM WND GST 91 | 3 S Gold Hill, CO | 8175 FEET ELEVATION |
| Dec 29, 4:33 AM MST | NON-TSTM WND GST 86 | 4 Ene Nederland, CO | |
| Dec 29, 4:42 AM MST | NON-TSTM WND GST 74 | Ene Virginia Dale, CO | |
| Dec 29, 4:52 AM MST | NON-TSTM WND GST 70 | W Floyd Hill, CO | |
| Dec 29, 5:01 AM MST | NON-TSTM WND GST 82 | 2 Sse Gold Hill, CO | |
| Dec 29, 7:03 AM MST | NON-TSTM WND GST 77 | 2 Nw Rocky Flats, CO | |
| Dec 29, 7:10 AM MST | NON-TSTM WND GST 73 | 3 N Eldorado Springs, CO | NCAR MESA LAB |
| Dec 29, 7:11 AM MST | NON-TSTM WND GST 98 | 2 Sse Gold Hill, CO | |
| Dec 29, 8:02 AM MST | NON-TSTM WND GST 83 | 3 Sw Jefferson, CO |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDEN), launched 12:00Z, 5.1 hours before the alert went out and 206 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3418 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- 127 m²/s²
- 0-3 km storm-relative helicity
- 392 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
550 WWUS75 KBOU 281707 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 1007 AM MST Thu Dec 28 2017 ...HIGH WINDS FOR THE FRONT RANGE MOUNTAINS AND FOOTHILLS TONIGHT THROUGH EARLY AFTERNOON FRIDAY... .Strong and potentially damaging winds are expected to develop across portions of the Front Range Mountains and Foothills late tonight. Wind gusts in excess of 75 mph can be expected in wind prone areas, with some gusts near 85 mph over places such as Berthoud Pass, the I-70 corridor near Georgetown, and higher ridges in the foothills west of Boulder. The winds may be quite variable and erratic at times, with light winds followed by sudden bursts of very strong and damaging winds. That will also create hazardous and difficult driving conditions especially for drivers of high profile vehicles. Strong winds will also cause areas of blowing snow and reduced visibilities in exposed areas. COZ033>036-290115- /O.UPG.KBOU.HW.A.0009.171229T0700Z-171229T1900Z/ /O.NEW.KBOU.HW.W.0014.171229T0700Z-171229T2200Z/ 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- Including the cities of Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 1007 AM MST Thu Dec 28 2017 ...HIGH WIND WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM MST FRIDAY... The National Weather Service in Denver has issued a High Wind Warning, which is in effect from midnight tonight to 3 PM MST Friday. The High Wind Watch is no longer in effect. * TIMING...After some decrease in the winds today, strong winds will redevelop tonight. The strongest winds are expected to occur from just after midnight tonight through Friday morning. Winds should slowly subside Friday afternoon. * WINDS...West winds 25 to 45 mph with gusts around 85 mph in wind prone areas. * IMPACTS...Travel will be hazardous over high mountain passes and along the Peak To Peak Highway due to very strong and sudden crosswinds. Drivers of high profile vehicles should avoid traveling I-70 west of Denver and Highway 40 over Berthoud Pass. Power outages will also be possible from trees blowing onto power lines. Areas of blowing snow will reduce visibilities as well. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Wind Warning means a hazardous high wind event is expected or occurring. Sustained wind speeds of at least 40 mph or gusts of 58 mph or more can lead to property damage. && $$
5 follow-up statements
728 WWUS75 KBOU 282313 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 413 PM MST Thu Dec 28 2017 ...HIGH WINDS FOR THE FRONT RANGE MOUNTAINS AND FOOTHILLS TONIGHT THROUGH EARLY AFTERNOON FRIDAY... .Strong and potentially damaging winds are expected to develop across portions of the Front Range Mountains and Foothills late tonight. Wind gusts in excess of 75 mph can be expected in wind prone areas, with some gusts near 85 mph over places such as Berthoud Pass, the I-70 corridor near Georgetown, and higher ridges in the foothills west of Boulder. The winds may be quite variable and erratic at times, with light winds followed by sudden bursts of very strong and damaging winds. That will also create hazardous and difficult driving conditions especially for drivers of high profile vehicles. Strong winds will also cause areas of blowing snow and reduced visibilities in exposed areas. COZ033>036-290715- /O.CON.KBOU.HW.W.0014.171229T0700Z-171229T2200Z/ 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- Including the cities of Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 413 PM MST Thu Dec 28 2017 ...HIGH WIND WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM MST FRIDAY... * TIMING...strong winds are expected to develop tonight. The strongest winds are expected to occur from just after midnight tonight through Friday morning. Winds should slowly subside Friday afternoon. * WINDS...West winds 25 to 45 mph with gusts around 85 mph in wind prone areas. * IMPACTS...Travel will be hazardous over high mountain passes and along the Peak To Peak Highway due to very strong and sudden crosswinds. Drivers of high profile vehicles should avoid traveling I-70 west of Denver and Highway 40 over Berthoud Pass. Power outages will also be possible from trees blowing onto power lines. Areas of blowing snow will reduce visibilities as well. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Wind Warning means a hazardous high wind event is expected or occurring. Sustained wind speeds of at least 40 mph or gusts of 58 mph or more can lead to property damage. && $$
241 WWUS75 KBOU 290349 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 849 PM MST Thu Dec 28 2017 ...HIGH WINDS FOR THE FRONT RANGE MOUNTAINS AND FOOTHILLS LATER TONIGHT THROUGH EARLY AFTERNOON FRIDAY... .Strong and potentially damaging winds are expected to develop across portions of the Front Range Mountains and Foothills late tonight. Wind gusts in excess of 75 mph can be expected in wind prone areas, with some gusts near 90 mph over places such as Berthoud Pass, the I-70 corridor near Georgetown, and higher ridges in the foothills west of Boulder. The winds may be quite variable and erratic at times, with light winds followed by sudden bursts of very strong and damaging winds. That will also create hazardous and difficult driving conditions especially for drivers of high profile vehicles. Strong winds will also cause areas of blowing snow and reduced visibilities in exposed areas. COZ033>036-291300- /O.CON.KBOU.HW.W.0014.171229T0700Z-171229T2200Z/ 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- Including the cities of Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 849 PM MST Thu Dec 28 2017 ...HIGH WIND WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM MST FRIDAY... * TIMING...strong winds are expected to develop after midnight. The strongest winds are expected to occur from 2 am tonight through Friday morning. Winds should slowly subside Friday afternoon. * WINDS...West winds 30 to 50 mph with gusts up to 90 mph in wind prone areas. * IMPACTS...Travel will be hazardous over high mountain passes and along the Peak To Peak Highway due to very strong and sudden crosswinds. Drivers of high profile vehicles should avoid traveling I-70 west of Denver and Highway 40 over Berthoud Pass. Power outages will also be possible from trees blowing onto power lines. Areas of blowing snow will reduce visibilities as well. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Wind Warning means a hazardous high wind event is expected or occurring. Sustained wind speeds of at least 40 mph or gusts of 58 mph or more can lead to property damage. && $$
226 WWUS75 KBOU 291031 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 331 AM MST Fri Dec 29 2017 ...HIGH WINDS FOR THE FRONT RANGE MOUNTAINS AND FOOTHILLS THROUGH EARLY THIS AFTERNOON... .Strong and potentially damaging winds will occur across portions of the Front Range Mountains and Foothills. Wind gusts in excess of 75 mph can be expected in wind prone areas, with some gusts near 90 mph over places such as Berthoud Pass, the I-70 corridor near Georgetown, and higher ridges in the foothills west of Boulder. As of 3 AM, peak wind gusts included: 89 mph near Aspen Springs, 78 mph near Dumont, 76 mph near Jefferson and 71 mph near Georgetown. Strong and sudden crosswinds, will create hazardous and difficult driving conditions especially for drivers of high profile vehicles. Strong winds may also cause areas of blowing snow and reduced visibilities in exposed areas. COZ033>036-291900- /O.CON.KBOU.HW.W.0014.000000T0000Z-171229T2200Z/ 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- Including the cities of Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 331 AM MST Fri Dec 29 2017 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 PM MST THIS AFTERNOON... * TIMING...strong winds are expected to continue through early this afternoon, then slowly subside. * WINDS...Westerly winds 30 to 50 mph with gusts up to 90 mph in wind prone areas. * IMPACTS...Travel will be hazardous over high mountain passes and along the Peak To Peak Highway due to very strong and sudden crosswinds. Drivers of high profile vehicles should avoid traveling I-70 west of Denver and Highway 40 over Berthoud Pass. Power outages will also be possible from trees blowing onto power lines. Areas of blowing snow will reduce visibilities as well. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Wind Warning means a hazardous high wind event is expected or occurring. Sustained wind speeds of at least 40 mph or gusts of 58 mph or more can lead to property damage. && $$
192 WWUS75 KBOU 291846 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 1146 AM MST Fri Dec 29 2017 ...HIGH WINDS FOR THE FRONT RANGE MOUNTAINS AND FOOTHILLS THROUGH EARLY THIS AFTERNOON... .Strong and potentially damaging winds will continue across portions of the Front Range Mountains and Foothills as well as east of the Mosquito Range. As of 11 AM, peak wind gusts include: 98 mph near Gold Hill in Boulder County, 89 mph near Aspen Springs in Gilpin County, 86 mph near Nederland in Boulder County and 83 mph near Jefferson in Park County. COZ033>036-292200- /O.CON.KBOU.HW.W.0014.000000T0000Z-171229T2200Z/ 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- Including the cities of Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 1146 AM MST Fri Dec 29 2017 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 PM MST THIS AFTERNOON... * TIMING...Strong winds will continue through early this afternoon, then slowly subside. * WINDS...Westerly winds 30 to 50 mph with gusts up to 75 mph in wind prone areas. * IMPACTS...Travel will be hazardous over high mountain passes and along the Peak To Peak Highway due to very strong and sudden crosswinds. Drivers of high profile vehicles should avoid traveling I-70 west of Denver, Highway 285 between Grant and Fairplay and Highway 40 over Berthoud Pass. Power outages will also be possible from trees blowing onto power lines. Areas of blowing snow will reduce visibilities as well. PRECAUTIONARY/PREPAREDNESS ACTIONS... A High Wind Warning means a hazardous high wind event is expected or occurring. Sustained wind speeds of at least 40 mph or gusts of 58 mph or more can lead to property damage. && $$
173 WWUS75 KBOU 292208 NPWBOU URGENT - WEATHER MESSAGE National Weather Service Denver/Boulder CO 308 PM MST Fri Dec 29 2017 ...High Wind Warning has expired... COZ033>036-292315- /O.EXP.KBOU.HW.W.0014.000000T0000Z-171229T2200Z/ South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Including the cities of Cameron Pass, Laramie and Medicine Bow Mountains, Rabbit Ears Range, Rocky Mountain National Park, Willow Creek Pass, Berthoud Pass, Breckenridge, East Slopes Mosquito Range, East Slopes Southern Gore Range, Eisenhower Tunnel, Indian Peaks, Kenosha Mountains, Mount Evans, Williams Fork Mountains, Winter Park, Estes Park, Glendevey, Nederland, Red Feather Lakes, Bailey, Central City, Evergreen, Georgetown, Idaho Springs, and Westcreek 308 PM MST Fri Dec 29 2017 ...HIGH WIND WARNING HAS EXPIRED... The threat of high winds has ended but west winds could still gust up to 50 mph in the wind prone areas of the north central Colorado mountains and Front Range foothills the rest of this afternoon and tonight. $$
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 28, 2:30 AM MST | High Wind Watch | BOU | Boulder, Clear Creek, Douglas, Gilpin, Grand, Jackson and 4 more | 8 hr |
Nearby
High Wind Warnings in Colorado, 2017Every high wind warning in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.