PM Update: Cold Air Poised for Return; Ice N&W?
Tuesday rain could turn icy by evening in northwest burbs
Winter Storm Watch N&W of D.C. Tue. evening through Wed. morning (includes Montgomery, Loudoun & Frederick counties)
Today was a rather pleasant start to the work week. Partly sunny skies helped highs reach the low-to-mid 60s across much of the area -- about 15 to 20 degrees above average. Now it's time to say bye-bye to the nice weather, because briefly colder air, clouds, rain and even a little ice look to be the major weather stories this week.
Tonight: By late evening, showers may approach the area from the west, associated with a fairly strong cold front passing through the region tonight. Showers will become likely after midnight through the early-morning hours. Winds from the north behind the front will whisk away today's warmth, dropping temperatures into the 40s by sunrise.
Tomorrow: We lose about 20 degrees for daytime highs Tuesday with temperatures holding steady near 40 much of the day, maybe dropping a bit by afternoon. Occasional showers are possible during the day, the most persistent of which should be north and west of D.C., which is also where some sleet and freezing rain may mix in by evening as temperatures dip toward freezing.
Tomorrow Night: The northwest suburbs could see the rain mix with or change to sleet and freezing rain as temperatures there fall to near freezing, potentially leading to some slick roads. Downtown and to the south and east, it looks like temperatures will stay just above freezing, so icing shouldn't be a problem even though these areas may also see the rain mix with sleet.
Snow in Pacific Northwest and Southwest: While flakes have eluded us, snow is continuing to fall in a number of places where it's pretty rare (e.g. last week in Houston and New Orleans). Measurable snow was expected in the Las Vegas Valley today for the first time in more than five years. Further north, snow shut down schools in Seattle and Portland, where bitter cold has accompanied the snow.
See Jason Samenow's forecast through the rest of the week.
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