Unseasonable heat, low humidity, and very dry fuels created critical conditions for wildfire.
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 STO wrote it up.
Unseasonable heat, low humidity, and very dry fuels created critical conditions for wildfire.
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 Sacramento, CA wrote its last area forecast discussion before the first event at Jun 9, 8:59 AM PST, 1 hour 25 minutes earlier.
Area Forecast Discussion National Weather Service Sacramento CA 959 AM PDT Sat Jun 9 2018 .SYNOPSIS... Cooler temperatures, breezy winds, and a chance for showers and isolated thunderstorms across far northern California today. Dry weather for Sunday into mid-week with substantial warming trend. && .DISCUSSION... An unseasonably deep upper level trough is currently moving through northern California. South to west winds have begun to pick up across the region, and will likely continue to strengthen through the morning into the afternoon. Gusts upwards of 30 mph are likely across the Valley today. This system is already bringing a few showers across far northern CA...mainly from Lassen Park northward. With a bit of instability projected for this afternoon, we may see a few lightning strikes this afternoon in those areas. Temperatures this afternoon will be on the cool side, owing to increased cloud cover, synoptic cooling, and strong onshore flow. Look for high temperatures today in the 70s across the Valley, with 50s to lower 70s over the mountains. These forecast highs are anywhere from 5 to 20 degrees cooler than normal. The trough will quickly shift eastward Sunday, replaced by flat ridging from the eastern Pacific. This will lead to a warming and drying trend through the middle of next week. Breezy north winds are likely across parts of the Valley Sunday. By Tuesday, highs will be in the upper 90s to lower 100s across the Valley, with 70s to 90s over the mountains. These projected highs are 10 to 15 degrees warmer than normal. Dang && .EXTENDED DISCUSSION (Wednesday THROUGH Saturday) Upper ridge over the west coast shifts eastward on Wednesday as a Pacific trough moves into the Pacific Northwest. Main impact on the forecast area will be a slight cool off but daytime temperatures are still expected to come in well above normal. At this time, any precipitation is expected to remain well north of the CWA. Upper troughing over the west coast will bring a little more cooling on Thursday with daytime highs expected to drop to near normal. Weak troughing remains over the west coast on Friday so overall expect little change from Friday. Models diverge going into next weekend. ECMWF shifts the west coast trough inland on Saturday and starts to build a ridge over the west coast for warming and drying. GFS in contrast forms a low over Norcal for a threat of showers and continued near normal temperatures. Leaning towards the GFS solution but not buying off completely until models come into better agreement. && .AVIATION... VFR conditions the next 24 hours. Breezy south to west winds 10 to 20 knots local gusts to 30 knots today. Winds turning northerly and decreasing overnight. && .STO WATCHES/WARNINGS/ADVISORIES... None. &&
1 wildfire. Local standard time, as filed.
The Chrome Fire in Glenn County (Hwy 162 and Forest Hwy 7, north of Elk Creek), burned 2,290 acres with 1 outbuilding destroyed. The fire was contained on June 21.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2018Every state in 2018This day in weather historyWarnings in California, June 2018
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: 767479.