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

Date:  22-Oct-14 Local Time:  07:22 AM Meteorologist:  Branz
Ag Burn Decision Above 3000 ft:  Permissive Burn Day (Fair)    
A.M. Stability (F) = 8 Wind Speed (mph)  = 7
500 millibar height (decameters) = 574 Average Rainfall (in) = 0
Meteorological (MET) Factor   = 0.5
Air Quality (AQ) Factor (Basinwide 00-06 PST Average PM2.5) = 7.9
Allocation Equation: = 6502
   
ARB/CCO 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 8 4 1 20 14 6 COL
Butte 4 5 1 16 9 8 CIC-GRD
Glenn 3 3 1 6 2 2 WLW
Placer 11 6 1 37 17 4 ROS
Sacramento 7 6 1 23 22 17 SAC
Sutter 12 0 1 49 13 13 YUB
Yolo/Solano 9 5 1 37 15 7 DAV-WOO
Yuba 12 0 1 49 13 13 YUB
Tehama 3 3 1 6 2 2 WLW
Shasta 11 11 1 19 6 11 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:
*** PERMISSIVE BURN DAY ***
Weak high pressure has built over the North State this morning, bringing higher AM stability. Winds will be weaker today and will organize out of the south by this afternoon. Expect high temps to run a few degrees warmer than yesterday. High clouds from a weak offshore trough will spread over the region today as well.

24 Hour + Outlook
*** PERMISSIVE BURN DAY ***
The aforementioned weak trough will weaken as it pushes toward the area on Thursday. A slight increase in wind and clouds is expected, along with a chance of precip for the north end of the Valley. High pressure will briefly rebound on Friday, followed by a stronger trough on Saturday. This system will bring a better chance of rain to the area for the weekend.

Mixing Height Discussion:
Valley: Mixing heights will reach 2000-2500 feet by afternoon.
Winds:
Valley: South to southeasterly 5-10 mph.
Delta: South to southwesterly 8-12 mph.

Complaints: Col Sut But Yol Gle Sac Yub Pla Teh Sha Total
19-Oct-14 0 0 0 0 0 0 0 0 0 0 0
20-Oct-14 0 0 0 0 0 0 0 0 0 0 0
21-Oct-14 0 1 0 1 0 0 0 0 0 0 0







Data Table
22-Oct-14 Date
07:22 AM Local Time
Branz Meteorologist
Permissive Burn Day (Fair) Ag Burn Decision Above 3000 ft
8 A.M. Stability (F)
7 Wind Speed (mph)
574 500 millibar height (decameters)
0 Average Rainfall (in)
0.5 Meteorological (MET) Factor
7.9 Air Quality (AQ) Factor (Basinwide 00-06 PST Average PM2.5)
6502 Allocation Equation:
2000 ARB/CCO REVISED Basinwide Allocation