A Flood Watch is in place for Harford, Anne Arundel, Cecil, Carroll, Howard, Baltimore, Baltimore City, Kent, Caroline, Queen Anne's, Talbot, Frederick, Allegany, Garrett, Washington, Montgomery, Dorchester, Calvert, Charles, St. Mary's, and Prince Georges counties until late Friday evening. A watch means that conditions a favorable for flooding especially with 3-5"+ of additional rain in the forecast for Thursday and Friday.
A stationary front continues to straddle the area with several rounds of showers and thunderstorms. This front will act as a lifting mechanism to squeeze the atmosphere out above as tropical moisture lurks overhead.
The worst of the rain looks to come in Thursday afternoon and through the day Friday with the best chance of flash flooding throughout the day Friday. Waves of low pressure will move along a frontal boundary giving us great lift with plenty of moisture which looks to gives us problems. Models continue to hint on a time frame starting around 4am Friday through the afternoon hours for the worst of the activity.
The time is now to think about your flooding precautions. If you live in a low lying area remember to seek higher ground when a warning is issued. Never drive through high water since you may not know what is underneath of it or in it. The old saying "Remember Turn Around Don't Drown." A common saying that oh so many do not listen too. Please do not take it for granted since these situations look to change very quickly.
More rain is in the forecast unfortunately through Preakness weekend into next week. Once again another boundary looks to stall across the area producing those higher rain chances into the middle of next week.