Thursday, April 21, 2011

April 21

Again another breezy day with winds coming from the west northwest over most of the region. Below are the 6 pm winds from this morning's 12Z RUC run.
Now that it's getting into ozone season, I'm starting to look at the ozone forecasts that NOAA/EPA is generating. Peak 8-hour ozone occurs around 03 UTC (9 pm) based on looking at a number of time series plots at several areas. The urban plume from Tucson can be clearly seen being transported along I-10.
Below is an animation of the 1-hour ozone concentrations for today.
  video
The Pine Lawn wildfire in the Gila National Forest is currently at 500 acres and 80 percent contained. This fire is eight miles south of Reserve with the transport winds blowing most of the smoke toward the east.

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