|Date: 21-Oct-16||Local Time: 07:59 AM||Meteorologist: Gerber|
|Ag Burn Decision Above 3000 ft: Permissive Burn Day|
|A.M. Stability (°F) = 20||Wind Speed (mph)||=||5|
|500 millibar height (decameters) = 582||Average Rainfall (in)||=||0.00|
|Meteorological (MET) Factor||=||0.1|
|Air Quality (AQ) Factor (Basinwide 00-06 PST Average PM2.5)||=||10.0|
|ARB/SMPC REVISED Basinwide Allocation||_________________________________________||=||1500|
|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***
High pressure peaked yesterday and will be slowly shifting Eastward today. However good warming aloft yesterday with cool temps this morning has resulted in high AM stability and light northerly winds. Expect winds to be weak this morning before increasing a little this afternoon. Mixing heights will be limited by warm temperatures aloft as well. Dispersion will not be as favorable as the past several days so use plenty of caution if burning.
*** Permissive Burn Day ***
Dispersion will slowly improve through the weekend as a trough pushes the ridge farther east. A return to unsettled weather looks likely by early next week as this trough deepens and moves into the North State.
|Mixing Height Discussion:|
|Valley: Mixing heights will reach near 2000 feet this afternoon.
|Valley: Light and variable 3-6 mph through late morning, becoming northerly 4-8 mph this afternoon.
Delta: Light and variable 3-6 mph through late morning, becoming northerly 4-8 mph this afternoon.