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

Date:  14-Oct-19 Local Time:  06:27 AM Meteorologist:  Gerber
Ag Burn Decision Above 3000 ft:  Permissive Burn Day (Good)    
A.M. Stability (F) = 25 Wind Speed (mph)  = 5
500 millibar height (decameters) = 570 Average Rainfall (in) = 0
Meteorological (MET) Factor   = 0.15
Air Quality (AQ) Factor (Basinwide 00-06 PST Average PM2.5) = 12.9
Allocation Equation: = 2852
   
ARB/SMPC REVISED Basinwide Allocation _________________________________________ = 2000
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 14 13 1 19 21 16 COL
Butte 12 13 1 23 11 11 CIC-GRD
Glenn - - 1 - - - WLW
Placer 20 24 1 34 12 12 ROS
Sacramento 19 21 1 30 6 15 SAC
Sutter 16 17 1 26 19 13 YUB
Yolo/Solano 13 15 1 21 5 14 DAV-WOO
Yuba 16 17 1 26 19 13 YUB
Tehama 9 8 1 15 19 9 RBL
Shasta - - 1 - - - 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:
*** RESTRICTED FIELDS DAY ***

Another morning with very strong stability therefore it's a Restricted Fields Day. Weak ridging today and tomorrow with light winds and pleasant temperatures. Hazy skies also due to the elevated smoke generated by the Caples Fire today. Burning is not recommended.

24hr Outlook
*** RESTRICTED FIELDS DAY or Permissive Burn ***
Ridge will get displaced starting late Tuesday as an EPAC trough skirts us by for some scattered showers near the CA/OR border late Wednesday. Flow will remain westerly throughout the end of the week which will direct another wave Friday into Saturday with more shower activity. Next weekend however models have been consistent in another North wind event late Saturday into Sunday. Stay Tuned!!!!
Mixing Height Discussion:
Valley: Mixing heights will reach near 3000 feet by afternoon.
Winds:
Valley: N 5-10 mph
Delta: W/NW 4-8 mph

Complaints: Col Sut But Yol Gle Sac Yub Pla Teh Sha Total
11-Oct-19 0 0 0 0 0 0 0 0 0 0 0
12-Oct-19 0 0 0 0 0 0 0 0 0 0 0
13-Oct-19 0 0 0 0 0 0 0 0 0 0 0







Data Table
14-Oct-19 Date
06:27 AM Local Time
Gerber Meteorologist
Permissive Burn Day (Good) Ag Burn Decision Above 3000 ft
25 A.M. Stability (F)
5 Wind Speed (mph)
570 500 millibar height (decameters)
0 Average Rainfall (in)
0.15 Meteorological (MET) Factor
12.9 Air Quality (AQ) Factor (Basinwide 00-06 PST Average PM2.5)
2852 Allocation Equation:
2000 ARB/CCO REVISED Basinwide Allocation