|Date: 11-Dec-13||Local Time: 07:29 AM||Meteorologist: Mims|
|Ag Burn Decision Above 3000 ft: NO Burn Day|
|A.M. Stability (°F) = 23||Wind Speed (mph)||=||6|
|500 millibar height (decameters) = 573||Average Rainfall (in)||=||0|
|Meteorological (MET) Factor||=||0.2|
|Air Quality (AQ) Factor (Basinwide 00-06 PST Average PM2.5)||=||25.8|
|ARB REVISED Basinwide Allocation||_________________________________________||=||0|
|Tehama||13||4||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%)
|***NO Burn Day***
Not much change today as the last day of the hard freeze is here. Morning minimums in the 20s should warm nicely again as afternoon hazy sunshine continues. Dispersion will be challenged again under strong inversions and weak winds. These conditions trap emissions which led to the high PM 2.5 values and no burn day calls. Warming will continue over the coming days which should decrease overnight emissions., But, atmospheric conditions will not change much for sometime as we stand ready to break the record for the driest year ever in some places!
***Restricted Fields or No Burn Day***
No much change early tomorrow. However, a weak disturbance should stir the atmosphere late and continue into Friday. PM 2.5 levels will remain high as dispersion remains limited. Temperatures will reach the 60s this weekend as high pressure extends in both time and distance. This system should linger through early next week with poor burning conditions expected.
|Mixing Height Discussion:|
|Valley: Near 800 feet.
|N/W Valley: Northwesterly 3-8 mph.
S/E Valley: North-Northwesterly 3-7 mph.
Delta: North-Northeasterly 5-12 mph