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September Disco/Obs Thread


George BM

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3 hours ago, George BM said:

Meteorological Fall starts tomorrow. Septembering. Falling. Tropicaling.

18z Nam had some decent action from Harvey's remnants on Saturday very early morning. The timing is off for decent severe, and the parameters are crap, but still a chance for some decent wind and flash rain as it rolls through. Maybe even a spin up or two based on this unusual profile.

 

 

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1 hour ago, eurojosh said:

18z Nam had some decent action from Harvey's remnants on Saturday very early morning. The timing is off for decent severe, and the parameters are crap, but still a chance for some decent wind and flash rain as it rolls through. Maybe even a spin up or two based on this unusual profile.

 

 

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You would have a hard time seeing any decent surface-based activity(wind and tornadoes) with that kind of inversion of colder air near the surface. Definitely could get a burst of heavier rain though.

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5 minutes ago, George BM said:

You would have a hard time seeing any decent surface-based activity(wind and tornadoes) with that kind of inversion of colder air near the surface. Definitely could get a burst of heavier rain though.

     Absolutely.    Zero chance of anything severe in the chilly early morning.    But the evening hours may have sneaky potential, especially in southern MD.    A warm front will be lifting into the area, and the NAM nest has a convective line along the cold front.     Enough low-level warm air could get into southern MD to make things interesting, given the decent wind field that will be in place.

 

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8 hours ago, high risk said:

     Absolutely.    Zero chance of anything severe in the chilly early morning.    But the evening hours may have sneaky potential, especially in southern MD.    A warm front will be lifting into the area, and the NAM nest has a convective line along the cold front.     Enough low-level warm air could get into southern MD to make things interesting, given the decent wind field that will be in place.

 

This. Ian mentioned the same thing on twitter, specifically southern MD and later in the day. Worth keeping an eye on. 

Harvey remnants prompted 64 tornado warnings yesterday, some of them produced legit tornadoes. 

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Currently 56 degrees in Montgomery Village. Looks like we have a good chance to smash some lowmax records, unless there's a sudden warm up late in the day. For Sept 2 record low maximums are :

IAD: 70 degrees

BWI: 64 degrees

DCA: 64 degrees

 

Currently 58 IAD, 60 BWI, 61 DCA. DCA was at 64 at midnight so maybe a tie?

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