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Chesapeake Bay weather for March 5: sunny and cold Wednesday

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

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Today: Mostly sunny and not as cold with a high in the upper 30s to lower 40s.

Tonight: Variable clouds and not as cold with a low in the upper 20s.

Thursday: Clouds and sun with a high from 45 to 50.

Thursday Night: Variable cloudiness with a low around 32.

Friday: Mostly cloudy with scattered rain showers. The high will be in the upper 40s.

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

The headline of today's column is "sunny and cold Wednesday." Although highs in the upper 30s to lower 40s may not be all that cold, we have to remember that the average high is 50 degrees. Today's morning lows were 10 to 15 degrees warmer than yesterday's, but still cold for this time of year with temperatures in the teens to lower 20s. Under a mostly sunny sky, today's highs will rebound into the upper 30s and lower 40s and result in melting snow and ice. High pressure will ensure another sunny day on Thursday with morning lows in the 20s and afternoon highs in the 40s. Meanwhile, an area of low pressure that we have been expecting to develop over the southeast states will move north along the coast and brush the area with precipitation. At the moment it looks as though temperatures will be mild enough to support mostly rain from Baltimore and Washington to the south and east. Depending on the arrival of the precipitation, there may be a brief period of sleet or wet snow but all precipitation will quickly change to rain. The heaviest rainfall looks to occur over southeast Virginia, southern Maryland, and the lower Eastern Shore of Maryland. The low will pull away from the area on Saturday, and skies will begin to clear on Sunday with highs near 50. Mild weather is expected to continue through at least the early part of next week with lows in the 30s and highs in the lower 50s, which is about where readings should be as we move toward the middle of March. Some computer models are hinting at a cold wave and a stormy pattern later next week, but there are many uncertainties at this time regarding the long-term pattern.

On the Maryland portion of Chesapeake Bay, no advisories are currently in effect. Winds on Wednesday will come out of the north at 10 knots with waves around one foot. Winds on Wednesday night will come out of the north at 10 to 15 knots with gusts over 20 and waves from 1 to 2 feet. Winds on Thursday will come out of the northeast at 10 to 15 knots with gusts over 20 and waves from 1 to 2 feet. 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 March 4 is 50 degrees and the average low is 30 degrees. The records at Baltimore on this date are 80 degrees in 1923, and 5 degrees in 1873. Today's sunrise will occur at 6:35 and the sunset will occur at 6:02. Weather data courtesy of the National Weather Service. 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.

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