California Air Resources Board - Meteorology Section
Basinwide Ag-Burn Acreage Allocation & Complaints - Sacramento Valley Air Basin

Date:  19-Nov-18 Local Time:  07:33 AM Meteorologist:  Branz
Ag Burn Decision Above 3000 ft:  No Burn Day    
A.M. Stability (F) = 25 Wind Speed (mph)  = 4
500 millibar height (decameters) = 574 Average Rainfall (in) = 0.0
Meteorological (MET) Factor   = 0
Air Quality (AQ) Factor (Basinwide 00-06 PST Average PM2.5) = 64.8
Allocation Equation: = 0
   
ARB/SMPC REVISED Basinwide Allocation _________________________________________ = 0
District Yesterday's
24-Hr Avg
PM2.5
Yesterday's
PM2.5
(0-6 PST)
Reduction
Factor
Yesterday's
PM2.5
MAX
Hour of
Yesterday's
MAX
Avg PM2.5
(0-6 PST)
Conc Stn
Colusa 68 109 0 143 0 55 COL
Butte 140 184 0 249 11 102 CIC-GRD
Glenn 56 63 0 69 0 40 WLW
Placer 54 41 0 91 17 41 ROS
Sacramento 130 163 0 169 0 114 SAC
Sutter 142 219 0 230 0 115 YUB
Yolo/Solano 102 109 0 173 11 48 DAV-WOO
Yuba 142 219 0 230 0 115 YUB
Tehama - - 1 - - - RBL
Shasta 46 66 0 70 2 41 AND
When any district's 0-6 am average PM2.5 is >= 27 ug/m increasing concentrations will result in a reduction
in allocation acres (e.g. 27-28 : 20%, 29-30 : 40%, 31-32 : 60%, 33-34 : 80%)
ARB Comments
Cautionary Comments:
*** NO Burn Day ***
High pressure will slowly push east today thanks to a trough approaching Southern California, but strong inversions remain in the Valley. Smoke from the Camp Fire will continue to be trapped below this inversion, so impacts will continue today. Winds will be light and variable until late afternoon when they should organize out of the north, but not enough to provide any mixing.

24hr Outlook
*** NO Burn Day ***
Smoky conditions will continue through Tuesday as high pressure continues to weaken. Expect a gradual improvement in air quality as winds become more southerly. A rather abrupt pattern change is still on course for Wednesday and Thursday, as the persistent high pressure ridge finally pushes farther east thanks to a stronger trough in the eastern Pacific. This system and another trough following for Friday will bring wind and rain to the North State for the second half of the week.
Mixing Height Discussion:
Valley: Mixing heights will reach 1,000 ft by afternoon.
Winds:
Valley: Light and variable 3-6 mph, trending northerly late.
Delta: Light and variable 3-6 mph, trending north to northeasterly late.

Complaints: Col Sut But Yol Gle Sac Yub Pla Teh Sha Total
16-Nov-18 0 0 0 0 0 0 0 0 0 0 0
17-Nov-18 0 0 0 0 0 0 0 0 0 0 0
18-Nov-18 0 0 0 0 0 0 0 0 0 0 0







Data Table
19-Nov-18 Date
07:33 AM Local Time
Branz Meteorologist
No Burn Day Ag Burn Decision Above 3000 ft
25 A.M. Stability (F)
4 Wind Speed (mph)
574 500 millibar height (decameters)
0.0 Average Rainfall (in)
0 Meteorological (MET) Factor
64.8 Air Quality (AQ) Factor (Basinwide 00-06 PST Average PM2.5)
0 Allocation Equation:
0 ARB/CCO REVISED Basinwide Allocation