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

Date:  30-Oct-14 Local Time:  08:00 AM Meteorologist:  Lancero
Ag Burn Decision Above 3000 ft:  Permissive Burn Day (Fair)    
A.M. Stability (F) = 14 Wind Speed (mph)  = 6
500 millibar height (decameters) = 576 Average Rainfall (in) = 0
Meteorological (MET) Factor   = 0.3
Air Quality (AQ) Factor (Basinwide 00-06 PST Average PM2.5) = 13.7
Allocation Equation: = 4408
   
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 21 19 0 39 23 37 COL
Butte 24 11 1 133 1 20 CIC-GRD
Glenn 8 7 1 23 17 2 WLW
Placer 10 10 1 17 5 6 ROS
Sacramento 17 18 1 37 9 19 SAC
Sutter 19 12 1 62 17 22 YUB
Yolo/Solano 11 9 1 17 17 12 DAV-WOO
Yuba 19 12 1 62 17 22 YUB
Tehama 8 7 1 23 17 2 WLW
Shasta 16 19 1 38 10 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 ***
*** Again WAIT TIL NOON TO BURN due to stronger stability and light winds ***
Very high PM readings in Colusa and Gridley. The SW Ridge has shifted east as the deep trof digs over the Gulf of Alaska, bringing still warm temps but slightly in the mid 70s and increasing clouds later. Expecting prectip to reach teh coast overnight and cold front by Fri morning.
Today, expect temps in the mid 70s, L+V winds 3-5mph then organizing southerly 5-10mph by mid aftn, delta winds L+V 3-5mph tending northerly 4-8mph then onshore SW 5-15mph, and mixing hgts reaching 2000ft.

24 Hour + Outlook
*** PERMISSIVE BURN DAY ***
Front will arrive Fri morning with rain and cold temps throughout the day into Sat, with instability by aftn. Sunday is back to dry conditions.

Mixing Height Discussion:
Valley: Mixing heights reaching 2000 feet by afternoon.
Winds:
Valley: L+V 3-5mph, then southerly 5-10mph by mid aftn
Delta: L+V 3-5mph, then light northerly 4-8mph, then SW 5-15mph by aftn.

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







Data Table
30-Oct-14 Date
08:00 AM Local Time
Lancero Meteorologist
Permissive Burn Day (Fair) Ag Burn Decision Above 3000 ft
14 A.M. Stability (F)
6 Wind Speed (mph)
576 500 millibar height (decameters)
0 Average Rainfall (in)
0.3 Meteorological (MET) Factor
13.7 Air Quality (AQ) Factor (Basinwide 00-06 PST Average PM2.5)
4408 Allocation Equation:
2000 ARB/CCO REVISED Basinwide Allocation