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

Date:  16-Sep-14 Local Time:  07:53 AM Meteorologist:  Lancero
Ag Burn Decision Above 3000 ft:  Permissive Burn Day (Fair)    
A.M. Stability (°F) = 11 Wind Speed (mph)  = 7
500 millibar height (decameters) = 582 Average Rainfall (in) = 0
Meteorological (MET) Factor   = 0.4
Air Quality (AQ) Factor (Basinwide 00-06 PST Average PM2.5) = 8.8
Allocation Equation: = 5582
   
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 11 10 1 35 11 9 COL
Butte 9 7 1 37 12 7 CIC-GRD
Glenn 9 11 1 19 12 7 WLW
Placer 8 7 1 11 0 9 ROS
Sacramento 8 9 1 26 3 11 SAC
Sutter 12 16 1 40 6 10 YUB
Yolo/Solano 10 14 1 16 9 8 DAV-WOO
Yuba 12 16 1 40 6 10 YUB
Tehama 9 11 1 19 12 7 WLW
Shasta 14 11 1 37 13 10 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***
Large deepening trough over the pacific continues to move west today, bringing light onshore flow and southerly winds in the valley. Today, expect clear skies, temps in the low 90s, winds light and variable 3-5mph then light southerly winds 5-15mph, delta winds SW 15-20mph, and mixing hgts reaching 2500ft by aftn. The smoke from the King fire(11,000+ acres) will remain east of the valley with today\'s southerly winds.

24 Hour + Outlook
*** Permissive Burn Day***
Expect cooling temps in the upper 80s by wed, then lower 80s by thurs as our next wave will start to increase onshore flow once againand promises to bring several degrees of cooling and good dispersion Wed through Friday.

Mixing Height Discussion:
Valley: Mixing heights will reach near 2500 feet by afternoon.
Winds:
Valley: L+V 3-5mph then light S-SE 5-15 mph by afternoon
Delta: SW 10-15mph then 20mph by afternoon.
Complaints: Col Sut But Yol Gle Sac Yub Pla Teh Sha Total
13-Sep-14 0 0 0 0 0 0 0 0 0 0 0
14-Sep-14 0 0 0 0 0 0 0 0 0 0 0
15-Sep-14 0 0 0 0 0 0 0 0 0 0 0







Data Table
16-Sep-14 Date
07:53 AM Local Time
Lancero Meteorologist
Permissive Burn Day (Fair) Ag Burn Decision Above 3000 ft
11 A.M. Stability (°F)
7 Wind Speed (mph)
582 500 millibar height (decameters)
0 Average Rainfall (in)
0.4 Meteorological (MET) Factor
8.8 Air Quality (AQ) Factor (Basinwide 00-06 PST Average PM2.5)
5582 Allocation Equation:
2000 ARB/CCO REVISED Basinwide Allocation