|Date: 22-Aug-17||Local Time: 07:39 AM||Meteorologist: Mims|
|Ag Burn Decision Above 3000 ft: Permissive Burn (Good)|
|A.M. Stability (°F) = 10||Wind Speed (mph)||=||6|
|500 millibar height (decameters) = 586||Average Rainfall (in)||=||0|
|Meteorological (MET) Factor||=||0.4|
|Air Quality (AQ) Factor (Basinwide 00-06 PST Average PM2.5)||=||15.6|
|ARB REVISED Basinwide Allocation||_________________________________________||=||2000|
|Tehama||18||22||1|| 200 acres
|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%)
|*** Permissive Burn Day ***
Not too much change as the low pressure system remains just off Central CA. Continued fair dispersion, AQI, and overall "cool" weather is expected along with a possible shower or two as the convective perifery is over us. Nothing major since this is August, but it does add excitement to the forecast. As does the haze and smoke moving in. This will keep the PM numbers elevated up north and near the delta. Winds should slacken a bit and remain onshore flow.
*** Permissive Burn Day ***
Not much change. Fair dispersion through Thursday as we quickly go from ridge to trough over a two day period. Increasing haze and PM concentrations as shifting winds are expected later in the week. A warming trend into the weekend as high pressure re-establishes itself.
|Mixing Height Discussion:|
|Mixing heights will reach above 2,000 feet by afternoon.|
|Valley: S/SE 5-10 mph.
Delta: W/SW 10-20 mph.