The Spromberg Canyon Fire erupted in a pile of logs stored in a logging yard near the Chumstick Highway north of Leavenworth on May 23rd. A dry cold front on May 24th spread the flames off the log deck and burned 42 acres of forest land before firefighters contained the blaze on May 25th.
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 OTX wrote it up.
The Spromberg Canyon Fire erupted in a pile of logs stored in a logging yard near the Chumstick Highway north of Leavenworth on May 23rd. A dry cold front on May 24th spread the flames off the log deck and burned 42 acres of forest land before firefighters contained the blaze on May 25th. A sawmill was burned in the fire and 168 homes in the area were evacuated. None of the homes were lost.
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 Spokane, WA wrote its last area forecast discussion before the first event at May 23, 10:20 AM PST, 1 hour 40 minutes earlier.
Area Forecast Discussion National Weather Service Spokane WA 1120 AM PDT Tue May 23 2017 .SYNOPSIS... Today will be warm with continued rises expected on local rivers and streams in the Cascades and across the Northern Mountains of Washington and Idaho. A strong cold front will plow through the region this evening bringing gusty winds. Breezy winds will usher the cooler air into the region Wednesday knocking temperatures down almost twenty degrees from those expected today. Cooler and unsettled weather will likely persist through the end of the week with a warming trend for the weekend. && .DISCUSSION... The evening timing of a strong cold front still looks on track. Satellite trends as of 11 AM show the cold front nearing the western tip of Vancouver Island. The morning runs of the NAM and GFS show increasing on-shore flow through the afternoon with a bit of cooler marine air spilling through the Cascade gaps by late afternoon. However, the brunt of the deep cold advection with the front won't arrive until mid evening causing an abrupt increase in west winds across the Columbia Basin into eastern Washington and north Idaho. Gusts of 40 mph will likely occur around Wenatchee, Chelan, and over the Waterville Plateau. We may be close to Wind Advisory Criteria for areas prone to Cascade gap winds, and it may be considered this afternoon for the aforementioned areas. Further east, the strongest pressure gradient and strongest cold advection will occur during the late evening and early morning hours, the time of night that is the least efficient for low level mixing. The strength of this front will certainly produce gusty winds, but places like Ritzville, Spokane, Pullman, and Lewiston will probably fall short of Wind Advisory Criteria (sustained 30 mph or gusts over 45 mph). /GKoch && .AVIATION... 18Z TAFs: The passage of a dry cold front this evening will produce a sharp increase in west winds for the Inland Northwest. The timing and strength of the winds will be the biggest challenge for the TAFs. It is often difficult for strong and gusty winds to persist all night long, but tonight's cold front is particularly strong. The strongest gusts will likely occur at the Wenatchee and Chelan airports (up to 35kts early this evening) with the contribution of gap winds accelerating through the Wenatchee Valley and down Lake Chelan. Further east, places like Spokane, Coeur d'Alene, Pullman, and Lewiston will experience the tightest pressure gradient and strongest 850mb winds between mid evening and early morning which is the toughest time for efficient low level mixing. /GKoch && .PRELIMINARY POINT TEMPS/POPS... Spokane 84 48 64 46 65 47 / 0 0 10 10 30 20 Coeur d'Alene 83 47 63 44 63 44 / 0 0 10 10 30 30 Pullman 83 49 63 44 62 44 / 0 0 0 20 30 30 Lewiston 90 53 68 48 68 48 / 0 0 0 20 40 20 Colville 86 48 67 46 68 46 / 0 0 10 10 30 20 Sandpoint 81 44 61 42 63 42 / 0 0 20 10 50 30 Kellogg 81 43 60 42 60 41 / 0 10 20 20 50 30 Moses Lake 92 51 72 47 73 49 / 0 0 0 10 10 10 Wenatchee 90 50 69 48 73 51 / 0 0 0 10 10 10 Omak 88 49 70 47 72 49 / 0 0 10 10 10 10 && .OTX WATCHES/WARNINGS/ADVISORIES... ID...None. WA...None. &&
Hazardous Weather Outlook National Weather Service Spokane WA 520 AM PDT Tue May 23 2017 IDZ001-004-WAZ037-241230- NORTHERN PANHANDLE-CENTRAL PANHANDLE MOUNTAINS- NORTHEAST MOUNTAINS- 520 AM PDT Tue May 23 2017 This Hazardous Weather Outlook is for portions of North Idaho and Northeast Washington. .DAY ONE...TODAY AND TONIGHT Warm temperatures will increase the mountain snow melt. This will lead to rises on area rivers and streams. A cold front passage will allow for windy conditions tonight and Wednesday. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY A chance of thunderstorms is possible on Thursday. IDZ002-003-026-027-WAZ031>036-044-241230- COEUR D'ALENE AREA-IDAHO PALOUSE-LEWISTON AREA- LEWIS AND SOUTHERN NEZ PERCE COUNTIES-NORTHEAST BLUE MOUNTAINS- LOWER GARFIELD AND ASOTIN COUNTIES-WASHINGTON PALOUSE- MOSES LAKE AREA-UPPER COLUMBIA BASIN-SPOKANE AREA- WATERVILLE PLATEAU- 520 AM PDT Tue May 23 2017 This Hazardous Weather Outlook is for portions of North Idaho... North Central Idaho...Central Washington...East Central Washington...Northeast Washington and Southeast Washington. .DAY ONE...TODAY AND TONIGHT A cold front passage will allow for windy conditions tonight and Wednesday. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY It will be windy Wednesday. A chance of thunderstorms is possible Thursday. WAZ038-041>043-241230- OKANOGAN HIGHLANDS-WENATCHEE AREA-EAST SLOPES NORTHERN CASCADES- OKANOGAN VALLEY- 520 AM PDT Tue May 23 2017 This Hazardous Weather Outlook is for portions of North Central Washington. .DAY ONE...TODAY AND TONIGHT Warm temperatures will increase the mountain snow melt. This will lead to rises on area rivers and streams. In addition A cold front passage will allow for windy conditions tonight and Wednesday. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY It will be windy Wednesday.
1 wildfire. Local standard time, as filed.
The Spromberg Canyon Wildfire burned 42 acres and a sawmill over three days near Leavenworth before being contained by firefighters.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Washington in 2017Every state in 2017This day in weather historyWarnings in Washington, May 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: 699676.