Forecast for Annapolis: Warm and humid today with afternoon showers and thunderstorms. Highs from 85 to 90. South winds shifting to the west at around 10 m.p.h., except higher in storms.
Temperatures last night remained in the low 70s at most locations around the bay, a warm and humid night typical of late August. As we move through the morning hours, temperatures will rise through the 70s and into the low 80s by noon. Meanwhile, an upper low currently located over West Virginia will move eastward, to be followed by a cold front tonight. This will result in the development of showers and thunderstorms this afternoon and evening. Before the front pushes across the bay later tonight, warm air will surge northward and enable highs today to reach the upper 80s to around 90 with a southwest wind shifting to the west. Some storms may become severe with damaging winds and heavy rain, although currently there are no watches or warnings posted for the Annapolis area. Our weather changes for the better on Friday as a northerly breeze ushers in drier air. After some morning clouds, sunshine will dominate the sky with highs in the low to mid 80s. Temperatures will fall back into the lows 60s, perhaps some upper 50s in outlying areas away from the bay, by Saturday morning.
On the Maryland portion of Chesapeake Bay, there are no advisories currently in effect. A southwest wind of 10 knots or less will continue through the afternoon and evening with wave heights of one foot or less. However, boaters should be aware of isolated showers or thunderstorms that may result in fast-changing weather conditions and some 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 22 is 85 degrees and the average low is 65. The records at Baltimore on this date are 99 degrees in 1983 and 69 degrees in 2007. 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.