Area Forecast Discussion
Issued by NWS Sterling, VA

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000 FXUS61 KLWX 270759 AFDLWX Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 359 AM EDT Sat Aug 27 2016 .SYNOPSIS...
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High pressure centered over the Upper Great Lakes will build into the Mid Atlantic in the first part of the week. A cold front will move through the area during the second half of the week.
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&& .NEAR TERM /TODAY/...
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Quiet weather pattern today. Surface front sinking southward over the region will start dissipating as it continues south. Surface high will pass well to our north in southern Canada with a relatively weak push of slightly cooler and drier air behind the front. Patchy fog in the typical spots this morning will give way to a mostly sunny today. Temps only drop a few degrees from yesterday but the lower dews will make it feel like it cooled more than that. Slight chance of a shower or t-storm in west-central Virginia near the dying boundary later on but ridge aloft will work to suppress it. Tonight increasing moisture with easterly flow and conditions more suitable for radiational cooling may lead to more low clouds and fog than we have this morning. Lows will be several degrees lower than this morning.
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&& .SHORT TERM /TONIGHT THROUGH MONDAY/...
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Sunday will feature easterly flow on the southwest flank of the high over northeastern New England and southeastern Canada with some potential for low clouds and fog. This should give way to sun as the ridge aloft will remain overhead. Risk of any convection confined to the very far western reaches of the CWA and it is slight. Highs cool a little more with the easterly flow and potential for clouds but still hot most places by afternoon. Sunday night is quiet, but Monday a shortwave will approach from the northwest accompanied by a cold front. Think most convection will remain in the NW portion of the CWA and points NW from there but could be a shower or t-storm that makes it to the metro during Monday night. Monday will also be a little hotter and more humid just ahead of the front. Not expecting heat advisory criteria howerver.
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&& .LONG TERM /TUESDAY THROUGH FRIDAY/...
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Tuesday will be another warm one with high pressure remaining over the region. This will likely continue into Wedensday. Isolated thunderstorms will be possible each day. Change in the form of an upper level trof/surface front looks to move into the region for Thursday and Friday. By Friday expect to see highs back into the lower 80s..which is closer to normal for early Sept. However the cooling looks like it will only be temporary as the trof moves offshore next Saturday and ridging returns.
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&& .AVIATION /06Z SATURDAY THROUGH WEDNESDAY/...
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Patchy fog early mainly CHO giving way to VFR with light winds. More of the same tomorrow though some potential for low clouds at the major terminals early in the morning. Will have to watch this closely but right now odds appear low. No risk of storms thru early Monday. Cold front may bring a stray storm into the area late Monday. Isolated thunderstorms possible at TAF sites Tuesday and Wednesday.
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&& .MARINE...
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Light winds and no risk of storms through early Monday. Risk of storms increases late Monday into Monday evening. Isolated thunderstorms will be possible on the waters Tuesday and Wednesday.
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&& .CLIMATE...
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High temperature record tied Friday at IAD with a reading of 95 degrees. This was previously reached in 1998..1993 and 1975. Ranking of summer 2016 in terms of average temperature (JUN 1 - AUG 26) Site RankAverage Temperature DC 3 80.5 Balt 19 77.2 IAD 3 77.3
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&& .LWX WATCHES/WARNINGS/ADVISORIES... DC...None. MD...None. VA...None. WV...None. MARINE...None. && $$ PRODUCTS...RCM/WOODY!

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