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

Date:  31-Oct-14 Local Time:  07:31 AM Meteorologist:  Gerber
Ag Burn Decision Above 3000 ft:  Permissive Burn Day (Fair)    
A.M. Stability (F) = -8 Wind Speed (mph)  = 12
500 millibar height (decameters) = 564 Average Rainfall (in) = 0
Meteorological (MET) Factor   = 1
Air Quality (AQ) Factor (Basinwide 00-06 PST Average PM2.5) = 6.9
Allocation Equation: = 9975
   
ARB/CCO REVISED Basinwide Allocation _________________________________________ = 4100
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 19 37 1 42 1 4 COL
Butte 14 20 1 53 12 7 CIC-GRD
Glenn 13 2 1 38 17 5 WLW
Placer 11 6 1 20 16 9 ROS
Sacramento 6 4 1 16 17 1 SAC
Sutter 15 22 1 27 0 7 YUB
Yolo/Solano 12 11 1 24 10 7 DAV-WOO
Yuba 15 22 1 27 0 7 YUB
Tehama 13 2 1 38 17 5 WLW
Shasta 14 11 1 44 10 18 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 ***
****Early Burn hours are in effect****
A narrow rain band has begun to move over the North end of the valley this morning with welcoming rain expected to hit the south end before 10am. More persistent rains expected throughout much of the day and early evening hours before the front passes tonight. A persistent southerly flow today and tonight near 10-15 mph with gusts over 20 mph.

24 Hour + Outlook
*** WET DAY ***
With the main frontal band out of the area winds will be variable 5-15 mph with higher gusts possible with scattered showers and thunderstorms. Wind shift, N/NW 10-20+mph, expected on Sunday as high pressure starts to nose itself overhead. Dry and mild expected for early next week as flat ridging deflects Pacific storms north of the state...

Mixing Height Discussion:
Valley: Mixing heights between 1,500 - 1,800 feet.
Winds:
Valley: S/SE 5-15mph, gusts 10-20mph,
Delta: S/SW 10-20mph, gusts 25+

Complaints: Col Sut But Yol Gle Sac Yub Pla Teh Sha Total
28-Oct-14 0 0 0 0 0 0 0 0 0 0 0
29-Oct-14 0 0 0 0 0 0 0 0 0 0 0
30-Oct-14 0 0 0 0 0 0 0 0 0 0 0







Data Table
31-Oct-14 Date
07:31 AM Local Time
Gerber Meteorologist
Permissive Burn Day (Fair) Ag Burn Decision Above 3000 ft
-8 A.M. Stability (F)
12 Wind Speed (mph)
564 500 millibar height (decameters)
0 Average Rainfall (in)
1 Meteorological (MET) Factor
6.9 Air Quality (AQ) Factor (Basinwide 00-06 PST Average PM2.5)
9975 Allocation Equation:
4100 ARB/CCO REVISED Basinwide Allocation