A human-caused fire started northeast of Hayden.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS GJT wrote it up.
A human-caused fire started northeast of Hayden.
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 Grand Junction, CO wrote its last area forecast discussion before the first event at Jul 1, 9:47 AM MST, 4 hours 26 minutes earlier.
Area Forecast Discussion National Weather Service GRAND JUNCTION CO 1047 AM MDT Sat Jul 1 2017 .SHORT TERM...(Today through Sunday) Issued at 407 AM MDT Sat Jul 1 2017 GOES 16 imagery is showing some features this morning which models have been hinting at the past few runs. First upstream is a weak but defined wave in SW.Utah/NE.Arizona that is embedded in the general anticyclonic flow over the Great Basin and Rockies. A more defined trough on H500 hand analysis chart is now hitting the Left Coast. Seems as though a combo of approaching wave to our west and outflow from convection form the Southern High Plains is pushing moisture back westward then northward over W.New Mexico. The 310K moisture transport vectors indicate this moisture pushing ahead of the wave into our southeast CWA this morning which helps pops isolated convection over the southern hills this afternoon. Handled well in grids attm and no big changes to forecast with highs popping back up to or above normal. The coastal trough will be moving eastward overnight into Sunday and really losing definition as it encounters the building ridge over the SW states. Low level southerly will bring in a bit more moisture from the south but nothing to really write home about. Main concern will be the increase in mid level flow which will bring down some stronger gusts...especially near virga or showers. Low afternoon humidity will bring some fire weather concerns with the winds but attm these conditions remain localized. .LONG TERM...(Sunday night through Friday) Issued at 407 AM MDT Sat Jul 1 2017 No major changes in the extended period attm as models continue to build the high pressure over the Intermountain West...centering over our CWA by mid-week. Moisture is entraining into this anticyclonic circulation and models want to pop afternoon convection from mid-week onward. This should remain isolated with subsidence aloft and fairly dry low layers. Guidance dew point numbers suggest moisture becoming a bit more abundant in the far Desert Southwest and a better tap to this moisture 10 days to 2 weeks out. So maybe there some hope for more widespread precipitation in the outer periods...but confidence not very high for that attm. Temperatures remain well above normal. && .AVIATION...(For the 18Z TAFS through 18Z Sunday afternoon) Issued at 1048 AM MDT Sat Jul 1 2017 VFR conditions and no CIGS below ILS breakpoints are expected through the next 24 hours. Winds will be relatively light and terrain driven. Haze from smoke is likely in the vicinity of KDRO. && .GJT WATCHES/WARNINGS/ADVISORIES... CO...None. UT...None. && SHORT TERM...15 LONG TERM...15 AVIATION...NL
Hazardous Weather Outlook National Weather Service GRAND JUNCTION CO 416 AM MDT Sat Jul 1 2017 COZ001>014-017>023-UTZ022>025-027>029-021100- Lower Yampa River Basin-Central Yampa River Basin- Roan and Tavaputs Plateaus-Elkhead and Park Mountains- Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor- Central Colorado River Basin-Grand and Battlement Mesas- Gore and Elk Mountains/Central Mountain Valleys- Central Gunnison and Uncompahgre River Basin- West Elk and Sawatch Mountains-Flat Tops- Upper Gunnison River Valley-Uncompahgre Plateau and Dallas Divide- Northwest San Juan Mountains-Southwest San Juan Mountains- Paradox Valley/Lower Dolores River- Four Corners/Upper Dolores River-Animas River Basin- San Juan River Basin-Southeast Utah-Eastern Uinta Mountains- Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat- La Sal and Abajo Mountains-Canyonlands/Natural Bridges- 416 AM MDT Sat Jul 1 2017 This hazardous weather outlook is for eastern Utah and western Colorado. .DAY ONE...Today and Tonight Isolated thunderstorm development will be possible this afternoon over the higher terrain of the southern Colorado mountain ranges. The main threat will be lightning and gusty outflow winds. Fire starts will also need to be monitored as little to precipitation is expected with these storms. .DAYS TWO THROUGH SEVEN...Sunday through Friday Mainly isolated afternoon thunderstorms will be possible for the remainder of the forecast through next week. The main threat will be lightning from these storms. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed.
The national radar mosaic for the moment the first event began.
1 wildfire. Local standard time, as filed.
A wildfire, believe to be caused by humans, burned 482 acres 13 miles northeast of Hayden, CO.
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, July 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: 732714.