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

Date:  26-Nov-14 Local Time:  07:56 AM Meteorologist:  Lancero
Ag Burn Decision Above 3000 ft:  No Burn Day    
A.M. Stability (F) = 21 Wind Speed (mph)  = 5
500 millibar height (decameters) = 588 Average Rainfall (in) = 0.00
Meteorological (MET) Factor   = 0.15
Air Quality (AQ) Factor (Basinwide 00-06 PST Average PM2.5) = 21.1
Allocation Equation: = 1531
   
ARB/CCO REVISED Basinwide Allocation _________________________________________ = 0
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 12 16 1 25 19 13 COL
Butte 16 15 0.4 55 23 32 CIC-GRD
Glenn 9 8 1 23 18 5 WLW
Placer 14 13 1 28 22 11 ROS
Sacramento 16 13 0.8 44 23 28 SAC
Sutter 20 23 0.6 56 21 30 YUB
Yolo/Solano 13 11 1 35 23 17 DAV-WOO
Yuba 20 23 0.6 56 21 30 YUB
Tehama 9 8 1 23 18 5 WLW
Shasta 27 34 0.4 53 3 31 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:
*** OVERRIDING DECISION to NO BURN DAY due to HIGH PM and AQI VALUES ***
AQI PM forecast is 99AQI. Strong stability of 21 degrees. Dominant high pressure ridge still dominating, bringing clear skies, light winds and warm temps temps in the mid to upper 60s. Today, expect similar conditions to yesterday with strong morning inversions, sunny conditions with temps in the mid upper 60s, light and variable winds 3-5mph tending northerly 5-7mph by noon, delta winds light N-NE 4-7mph, and low mixing hgts below 1000ft. Poor dispersal conditions.

24 Hour + Outlook
*** T-Day will be a NO BURN Day ***
High pressure weakening but still dominant through Thanksgiving with mild, stagnant weather expected. Expect Rain to reach norCal fri late, then closed upper low moving into the weekend, with widespread rain.

Mixing Height Discussion:
Valley: Mixing heights will be limited to <1,000 feet.
Winds:
Valley: L+V 3-5mph early, then northerly 5-7mph by noon.
Delta: N-NE 4-7mph.
Complaints: Col Sut But Yol Gle Sac Yub Pla Teh Sha Total
23-Nov-14 0 0 0 0 0 0 0 0 0 0 0
24-Nov-14 0 0 0 0 0 0 0 0 0 0 0
25-Nov-14 0 0 0 0 0 0 0 0 0 0 0







Data Table
26-Nov-14 Date
07:56 AM Local Time
Lancero Meteorologist
No Burn Day Ag Burn Decision Above 3000 ft
21 A.M. Stability (F)
5 Wind Speed (mph)
588 500 millibar height (decameters)
0.00 Average Rainfall (in)
0.15 Meteorological (MET) Factor
21.1 Air Quality (AQ) Factor (Basinwide 00-06 PST Average PM2.5)
1531 Allocation Equation:
0 ARB/CCO REVISED Basinwide Allocation