A broad trough brought gusty winds to the Delta region, which combined with fine fuels, led to elevated fire weather conditions.
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.
A broad trough brought gusty winds to the Delta region, which combined with fine fuels, led to elevated fire weather conditions.
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 6, 1:58 PM PST, 32 minutes earlier.
Area Forecast Discussion National Weather Service Sacramento CA 258 PM PDT Sat Jun 6 2020 .Synopsis... A cooldown is expected through the weekend, with chances for showers, thunderstorms, breezy winds, and light mountain snow. Dry weather is expected to return Monday, with a warming trend bringing above normal temperatures by mid-week. && .DISCUSSION... Satellite imagery this afternoon depicts a general broad trough over the region, which is influencing our weather today. Afternoon temperatures are running several degrees cooler compared to yesterday's. Regarding winds, onshore gradients are around 4.2mbs SFO-SAC this afternoon. Current wind observations indicate around gusts in the 20 to 25 mph, with local gusts up to 35 mph in the northern San Joaquin Valley. The strongest winds are expected in the Delta and northern San Joaquin Valley, where westerly winds are forecast to be around 20-30 mph and gusts could peak up to 40 mph. A Wind Advisory is in effect from 5PM to 11PM today. Winds will gradually diminish overnight. With the upper trough situated over the region, shower activity is expected to increase this afternoon, mainly over the northern Sacramento Valley and mountain locations north of I-80. QPF amounts should remain light, generally less than 0.10 to around 0.25. In addition, guidance promotes isolated thunderstorm activity through early this evening. Small hail, gusty winds, and lightning are the main threats with any storms that develop. Given the cool nature of this system, some light snow is forecast tonight into Sunday morning. Snow levels will likely lower to around 5000 feet by Sunday morning. Current snow projections indicate less than an inch at pass levels, and up to 4 inches near Lassen National Park. Impacts are expected to be on the lower end. Slippery roads will be possible and recreational hikers or campers at the higher elevations may be affected by adverse weather. Cold overnight lows will be seen in the mountains Saturday night falling into the 20s at most locations. Models indicate shower activity persisting over the foothills and mountains through Sunday before clearing out late evening as a ridge builds in over the area. HREF shows the highest potential for thunderstorm chances over portions of Shasta County and perhaps into Butte/Western Plumas counties. By early next week, a warming and drying trend is expected as an upper level ridge builds in. Highs will gradually warm up each day, and should be slightly above normal by Tuesday. Valley temperatures will warm into the 80s by Monday, with widespread low 90s by Tuesday. Locally breezy northerly winds are expected on Monday as the system moves into the Great Basin. Valley gusts in the 20 to 25 mph are expected. && .EXTENDED DISCUSSION (Wednesday THROUGH Saturday)... Progressive mid-latitude flow will keep systems moving through the area during the forecast period. The early week upper ridge will produce the warmest day of the week on Wednesday. 850-mb temperatures are likely to range from 18-20C which would equate to mid 90s assuming strong mixing. Given it is early June, such forecasts are only around 6 to 10 degrees above seasonal averages. Unlike preceding bouts of heat, overnight lows should cool into the low to mid 60s in most locations. While still warm, Thursday should prove to be more of a transitional day in the weather pattern as the ridge exits toward the Rockies. From Friday and into next weekend, another broad upper trough pushes into the eastern Pacific. Lowering heights along the coast will take temperatures down by around 10 degrees as Valley and Delta highs reach the low to mid 80s. The best chance for showers would be across the northern Sacramento Valley into the higher terrain, especially on Friday and Saturday. It is difficult to say how long unsettled weather will last given some model solutions attempt to cut off an upper low, especially the 12Z ECMWF. Given it has not produced this solution in recent runs, will not put too much stock into it. Ensemble means tend to favor a more progressive pattern anyway. ~BRO && .AVIATION... VFR conditions for the TAF sites the next 24 hours except for isolated thunderstorms over the northern Sacramento Valley. Breezy south to southwesterly winds 15-25 knots gusting up to 40 knots through the Delta and into the Northern San Joaquin Valley through 06Z Sunday. An Airport Weather Warning has been issued for KSCK from 00Z through 06Z for sustained winds greater then 24 knots with gusts over 35 knots. Isolated thunderstorms with erratic winds possible locally over the northern Sacramento Valley through 03Z Sunday. && .STO WATCHES/WARNINGS/ADVISORIES... Wind Advisory until 11 PM PDT this evening for Carquinez Strait and Delta-Northern San Joaquin Valley. &&
Special Weather Statement National Weather Service Sacramento CA 255 PM PDT Sat Jun 6 2020 CAZ015-066-068-062245- Northeast Foothills/Sacramento Valley-Northern Sacramento Valley-Western Plumas County/Lassen Park- 255 PM PDT Sat Jun 6 2020 ...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN TEHAMA COUNTY... At 254 PM PDT, a strong thunderstorm was located 7 miles east of Dairyville, or 9 miles east of Red Bluff, moving east at 25 mph. Winds in excess of 30 mph and pea size hail are possible with this storm. Locations impacted include... Paynes Creek and Manton. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. LAT...LON 4010 12212 4027 12221 4043 12180 4018 12168 TIME...MOT...LOC 2154Z 249DEG 21KT 4021 12208 IDM
1 wildfire. Local standard time, as filed.
A wildfire broke out during the afternoon hours which threatened 100 structures, destroyed 3 structures, and caused evacuations and road closures. By June 10, the fire was considered contained by mid morning. Cause of the fire is under investigation.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2020Every state in 2020This day in weather historyWarnings in California, June 2020
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: 898386.