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Forecast Discussion: The Holiday Weekend Forecast: Over the weekend, expect mostly sunny skies to persist each day as an area of high pressure builds from west to east over the northern Mid-Atlantic. Early in the weekend, the high pressure system will be off to our west, steering our winds out of the north and keeping cooler, drier conditions locked in over our area. As we roll into Monday, the high pressure system will have migrated far enough east to allow our winds to die down while forcing warmer temperatures into our area. A warm front passage on Tuesday will allow some showers to push back into the area before the winds turn southwesterly and return even warmer air into the region. Overall, good air quality will persist through the weekend. *** Extended Outlook: Ozone levels will begin to increase toward the middle of the week as a ridge of high pressure builds in over the eastern US. This ridge of high pressure will promote very warm temperatures and higher humidity levels and lower winds. The more stable atmospheric conditions along with these other features will combine to force ozone much closer to the Code ORANGE as we head into the first full weekend in June. --Nolan |
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