The National Weather Service at Baltimore/Washington has issued a Winter Weather Advisory in effect from 2 a.m. Monday through 6 p.m. on Monday and a Winter Storm Watch from Monday night through Tuesday for Annapolis, MD. This watch does not include Washington, D.C. A clipper system will drop to our south tonight and produce a shield of moisture over the Chesapeake Bay area. Most of this precipitation will begin as a rain, or a mixture of rain and snow, and then eventually turn over to all snow on Monday morning. The amount of precipitation with this system will be limited, and temperatures will only be marginally cold. As a result, a swath of 1 to 2 inches can be expected from Washington over to Annapolis. 2 to 4 inches can be expected north and west of Baltimore and Washington, D.C. During the day, snow will taper to snow showers or flurries as the energy from the low transfers to the Atlantic coast and develops into a powerful nor’easter that will bring 1 to 2 feet of snow from Philadelphia to Boston. By Monday night, this storm will intensify and may produce additional moisture on its western flank. This may result in a period of snow in Baltimore and Annapolis with additional accumulation possible. This is the scenario that the National Weather Service is considering with the Winter Storm Watch. In addition to the moderate to potentially heavy snow on Monday night and Tuesday, winds will gust from 20 to 30 miles per hour through Tuesday. Additionally, temperatures will be below freezing so driving conditions will be hazardous. I will post more updates on my Facebook pages as well as here on zoomdune.com as new information becomes available today and Sunday. Below is the text of the current Winter Storm Watch:
URGENT – WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1040 AM EST SUN JAN 25 2015
INCLUDING THE CITY OF…ANNAPOLIS
1040 AM EST SUN JAN 25 2015
…WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 AM TO 6 PM
…WINTER STORM WATCH IN EFFECT FROM MONDAY EVENING THROUGH
THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS
ISSUED A WINTER STORM WATCH…WHICH IS IN EFFECT FROM MONDAY
EVENING THROUGH TUESDAY AFTERNOON. THE WINTER WEATHER ADVISORY
REMAINS IN EFFECT TONIGHT THROUGH MONDAY.
* PRECIPITATION TYPE…SNOW…POSSIBLY HEAVY AT TIMES.
* ACCUMULATIONS…1 TO 2 INCHES EXPECTED TONIGHT THROUGH
MONDAY…WITH AN ADDITIONAL 3 TO 5 INCHES POSSIBLE MONDAY NIGHT
* TIMING…SNOW WILL BEGIN LATE TONIGHT AND CONTINUE THROUGH
TUESDAY. THE HEAVIEST SNOWFALL WILL OCCUR BETWEEN EARLY MONDAY
MORNING AND MONDAY AFTERNOON…WITH ANOTHER ROUND OF HEAVY SNOW
POSSIBLE MONDAY NIGHT.
* TEMPERATURES…IN THE UPPER 20S TO LOWER 30S.
* WINDS…NORTH 10 TO 20 MPH WITH GUSTS UP TO 30 MPH MONDAY NIGHT
* IMPACTS…ROADS WILL BE SNOW COVERED AND SLIPPERY WITH
VISIBILITIES BEING REDUCED TO NEAR ONE-QUARTER MILE AT TIMES.
THE COMBINATION OF SNOW COVERED ROADS AND LOW VISIBILITY WILL
MAKE TRAVELING DANGEROUS.
A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES…AND USE CAUTION WHILE
A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW…SLEET…OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.
Regional Weather Information
Baltimore average lows and highs
Washington average lows and highs
National Weather Service daily weather discussion
Baltimore/Washington National Weather Service
Chesapeake Bay marine forecast
Mid-Atlantic radar loop
For more weather updates, please visit my web site www.chesapeakebayweather.com, my Chesapeake Bay Weather page on Facebook, and if you’re heading to Ocean City feel free to check out my Ocean City MD Weather page on Facebook. You can also follow me on Twitter @chesbayweather.