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Chesapeake Bay weather for February 17: Winter Weather Advisory for snow showers

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Brian's exclusive forecast for Baltimore, Annapolis, and northern Delmarva:

Overnight: *Winter Weather Advisory in effect*. Cloudy with snow showers. Snowfall accumulation up to 1 inch. Low around 30.

Tuesday: Morning snow showers, then mostly sunny and mild with a high around 45.

Tuesday Night: Mostly clear with a low around 32.

Wednesday: Clouds and sun with scattered rain showers. High in the lower 50s.

Wednesday Night: Mostly clear with a low in the upper 30s.

Thursday: Clouds and sun. Mild with a high in the 50s, except a bit cooler near the bay shore.

The extended forecast calls for a chance of rain showers on Friday with a low around 45 and a high near 60. Clouds and sun on Saturday with low around 45 and a high near 50. Clouds and sun on Sunday with a low in the upper 30s and a high in the upper 40s. Mostly sunny on Monday with a low around 30 and a high in the mid 40s.

Sunshine was plentiful in the bay area today with a frigid start as temperatures dropped into the upper 10s to mid 20s, and afternoon highs struggled to break above the freezing point. Meanwhile, a weak weather system to our west will impact our region with snow and possible slick travel conditions during the Tuesday morning commute. A Winter Weather Advisory is in effect for the Annapolis area tonight. High pressure this evening will give way to a weak center of low pressure that will cross the Appalachian Mountains and move across southern Pennsylvania. As a result, light snow is expected to develop and move through the region overnight, probably between 2 a.m. and 5 a.m. Temperatures will be cold enough to support all snow. About one inch of accumulation is expected. Across southern Maryland, temperatures will be a bit warmer so that precipitation may fall in the form of mixed rain and snow, or just rain showers. After a few morning flurries, the sun will break through the clouds and temperatures will rise into the 40s on a southerly wind. The remainder of the week will feature mild conditions. A weak system may bring some rain showers on Wednesday, but afternoon highs will reach into the 50s. Maximum readings are expected to climb into the 50s again on Thursday, and perhaps even low 60s on Friday as warm air rushes north ahead of an advancing cold front. The frontal passage may produce widespread rain showers during the day on Friday.

On the Maryland portion of Chesapeake Bay, no advisories are currently in effect. Winds tonight will come out of the southeast at 10 knots with waves around one foot. Visibility may be reduced in snow and fog. Winds on Tuesday will come out of the southwest at 10 knots with waves around one foot. Winds on Tuesday night will come out of the south at 10 knots with waves around one foot. Winds on Wednesday will come out of the south at 15 knots with gusts over 20 and waves from 1 to 2 feet. Visibility may be reduced in rain and fog. Marine information is provided as general guidance. Boaters should always stay tuned to the latest forecasts and advisories from the National Weather Service.

The average high temperature for February 17 is 45 degrees and the average low is 27 degrees. The records at Baltimore on this date are 76 degrees in 1976 and 12 degrees in 1958. Today's sunrise will occur at 6:56 and the sunset will occur at 5:46. Weather data courtesy of the National Weather Service. For more weather updates, please visit 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.

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