I provide a weather email service for people in MD. I am a storm chaser & Skywarn spotter. For daily weather tidbits follow me on Twitter: @wxmanMD.
By: cws6196 , 3:55 AM GMT on September 17, 2012
UPDATE Monday evening
I have been looking at the latest data for tomorrow and all seems to be on track based on what I posted yesterday. We could see local rain amounts 3 inches or more. Wind will be the greatest threat with the potential for tornadoes.
TIMING: Light rain will move into the area after midnight, ending Tuesday morning. After a period of some clearing, heavier rain will start after 10:00am. The severe weather should hold off until after 2:00pm.
Follow me on Twitter (www.twitter.com/wxmanmd) and my Weather Phone will be updated as needed. I will post updates as conditions warrant.
original post Sunday
I hope everyone enjoyed the weekend and the weather of the past couple days as all of that will change soon. The high pressure system is moving off the coast as a low pressure system moves in from SW. A cold front moving ahead of the low will combine with other features to bring us stormy weather on Tuesday. Monday evening into Wednesday morning will be wet and windy thanks to the interaction of the high and low systems. The high, sitting off the coast, spins clockwise, pushing up moisture and warm air from the south into MD while the low, spinning counterclockwise to our SW is doing the same, therefore we can expect a good deal of moisture. Also, the interaction of the different pressure systems will produce a pressure gradient helping to cause very strong winds to form.
TIMING: Too early to specify, but generally, the rains will begin late Monday afternoon lasting into the morning hours of Wednesday. There will be breaks in the rain.
THREATS: On Tuesday the main threat is gusty damaging winds with a possible isolated tornado. Some of the winds have the potential to be quite strong. Even with the potential for a large amount of rain, flash flooding should not be an issue.
TROPICS: There is an area of interest in the Gulf of Mexico worth watching as the current model runs have the potential for the remnants to come over MD. Way too soon for any certainty, but wanted to let you know.
I will have another update later Monday evening regarding the storm potential for Tuesday. Follow me daily on Twitter for weather updates and tidbits (www.twitter.com/wxmanmd). My Weather Phone will be updated as needed: 443-470-9804
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