Brian's exclusive forecast for Annapolis: Mostly cloudy with occasional showers and thunderstorms. It will be warm and humid with a high in the mid 80s. Light west winds. Tonight, more showers are expected with a low near 70. On Thursday, morning clouds and showers will give way to a mostly sunny sky in the afternoon. A high of 87 is expected on Thursday with a light north wind.
Considerable cloudiness and rain showers are the main weather feature this morning as a weak frontal system moves southeast from the Great Lakes region. At 9:30 a.m., a wide area of mainly light rain showers is progressing toward the Baltimore/Washington area. Temperatures are warm with readings in the mid to upper 70s along with dew point values around 70, so it certainly feels like a typical August morning. As we move through the day, there is enough instability in the atmosphere for additional showers and thunderstorms to develop. Although today will not be a washout, those planning on outdoor activities should take an umbrella or be prepared to head indoors during a thunderstorm. Highs today will probably top out in the middle 80s considering the pervasiveness of the clouds and showers. As we move into the evening hours, a cold front will move across the bay overnight. This may result in additional showers through early Thursday morning; however, clearing is expected by Thursday afternoon with drier air filtering into the coastal plain. Although humidity will be lower, it will be warm on Thursday with a high in the mid to upper 80s.
On the Maryland portion of Chesapeake Bay, there are no advisories currently in effect. Winds today and tonight will come out of the west at less than 10 knots, and then shift to the north/northeast at less than 10 knots on Thursday. Isolated thundershowers may reduce visibilities and produce gusty winds. Marine weather information is provided only as a guide. Boaters should always stay tuned to the latest forecasts and advisories from the National Weather Service.
The average high temperature for August 28 is 84 degrees and the average low is 64. The records at Baltimore on this date are 101 degrees in 1948 and 63 degrees in 1915. 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.