|Date: 27-May-18||Local Time: 06:38 AM||Meteorologist: Mims|
|Ag Burn Decision Above 3000 ft: Permissive Burn Day (Fair)|
|A.M. Stability (°F) = -1||Wind Speed (mph)||=||15|
|500 millibar height (decameters) = 576||Average Rainfall (in)||=||0.00|
|Meteorological (MET) Factor||=||0.95|
|Air Quality (AQ) Factor (Basinwide 00-06 PST Average PM2.5)||=||6.9|
|ARB REVISED Basinwide Allocation||_________________________________________||=||2000|
|Tehama||5||5||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%)
|*** Restricted Fields Day ***
Changes today as building high pressure keeps the well-advertised warmup going with gusty northerly wind. Relatively warm overnight temperatures will lead to mid to upper 80s this afternoon with gusts to 25mph expected. Dispersion should remain springtime good with the noted wind exception. Caution also for damp fields since we did get a few sprinkles again yesterday.
*** Permissive Burn or Restricted Fields Day ***
Other than wind strength, not much change tomorrow with the high pressure and warm temperatures remaining. The north wind pattern ends Tuesday as the next in the long line of troughs keeping us cool in May moves in. This system should return us back to our Goldilocks pattern, not to hot, not to cold through the weekend.
|Mixing Height Discussion:|
|Valley: Mixing heights near 2,500 feet by afternoon.
|Valley: Northerly 10-20mph, gusting to 25mph.
Delta: Southwesterly 5-10 early, turning Northerly 5-15mph gusting to 20mph this afternoon.