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Forecast Discussion: FORECAST SUMMARY: Monday, May 20th, 2013 through Tuesday, May 28th, 2013 Ozone: 8-hour Ozone concentrations are expected to be mostly Good to Low Moderate for the forecast period… PM-2.5: 24-hour Fine Particulate concentrations are also expected to be mostly Good to Moderate for the forecast period… FORECAST DISCUSSION: Warmer weather during the previous week pushed ozone and fine particulate concentrations into the Moderate range, during a couple of days, but concentrations generally stayed in the Good range. A warm front moving through the Midwest early in the week will set off a series of rain events ranging from showers to severe storms. Regardless of the potential rain severity, cloud cover will retard widespread photochemical activity. As such, ozone concentrations will stay mostly in the Good category and PM-2.5 concentrations will range from the Good to Moderate range. Cooler, dryer Canadian air will follow Thursday setting up an extremely nice holiday weekend. Current models are anticipating weekend temperatures around the 70 degree mark with much dryer dew points. The cooler, dryer air will keep Air Quality in the Good range for both pollutants during the weekend into next week. EXTENDED FORECAST: The next warm up looks to occur during the Tuesday-Wednesday time frame of next week. Forecast updated by Jim Haywood: Monday, May 20th, 2013 Next forecast update: Tuesday, May 28th, 2013 |
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