|Date: 31-Jul-15||Local Time: 07:36 AM||Meteorologist: Mims|
|Ag Burn Decision Above 3000 ft: Marginal Burn Day|
|A.M. Stability (°F) = 21||Wind Speed (mph)||=||5|
|500 millibar height (decameters) = 593||Average Rainfall (in)||=||0.00|
|Meteorological (MET) Factor||=||0.15|
|Air Quality (AQ) Factor (Basinwide 00-06 PST Average PM2.5)||=||12.7|
|ARB REVISED Basinwide Allocation||_________________________________________||=||2000|
|Tehama||11||6||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 ***
High pressure, monsoonal moisture and smoke from the various wildfires will continue affecting our region. Combined these factors make for a less than desirable burning situation today and a restricted field declaration. Lots of clouds and a possible sprinkle or two as a slug of monsoon moisture make its way northward. This will help conditions feel a little more muggy and set the stage for afternoon convection over the higher elevations. Smoke will continue moving into the valley, leading to hazy skies and some AQI issues. Triple digits once again North of the Buttes, but cooler in the south thanks to the delta breeze.
***Restricted Field Day***
A weak trough well keep onshore going into the weekend, leading to better dispersion overall. Smoke will continue to be an issue until full containment since the overall flow pattern will allow smoke to enter the valley from several directions.
|Mixing Height Discussion:|
|Valley: Mixing heights over 1800 feet by early afternoon.
|Valley:Southerly 2-10 mph early, increasing 5-15 mph, especially in the south by afternoon.
Delta: Southwesterly 10-20 mph, gusting to 25 mph