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Susquehanna Valley Ozone/PM2.5 Forecast

Small map of Pennsylvania showing counties involved in the sv partnership.
Forecasted AQI for Ozone Air Quality Index Scale Forecasted AQI for PM2.5
February 12, 2016

 

Date: Friday, February 12, 2016
Action Day?:  No
Temperature:  upper 20s Friday
Discussion:
High pressure will bring times of clouds and sunshine for the day Friday with temperatures recovering to the upper 20s. Lighter winds will mean higher levels of fine particulate than Thursday, but overall averages will be in the upper good range. An arctic cold front then charges southeastward Friday night, and snow showers can also accompany this as the mercury nosedives into the middle teens.

Extended:
The coldest air of the winter will be felt over the weekend with temperatures over 20 degrees below normal. Any sunshine we do get on Saturday will be ineffective as temperatures do not leave the teens and wind chills go below zero with north winds gusting over 30 mph. Obviously, strong mixing will bring fine particulate down to very low levels. Air temperatures may go below zero Saturday night in some areas with lighter winds and snow cover. High pressure will bring more in the way of sun for Sunday. Things will still be rather cold, but there will be less wind. Air quality will average in the upper good range. Clouds and a little sunshine on Monday, and a snow shower or two cannot be ruled out. With winds lightening, fine particulate values may increase to low moderate. The next storm system then bears down on us late Monday night into Tuesday. At present, the storm should take a track very close to us, which if this occurs, could bring in enough warm air aloft to turn precipitation to sleet or freezing rain early Tuesday after starting as snow Monday night. Enough warm air coming in at all levels could even turn precipitation to all rain at some point later Tuesday. Of course, exact precipitation types and amounts highly depend on the track this storm will take, so stay tuned for further updates.---McAuliffe

 

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