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End of June apocaheat


Ji

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Friday's record high would be extremely difficult to beat/tie at BWI- that's the all-time June record of 105, set in 1934. Saturday's is more attainable, with a record high of "only" 100.

101/100 at DCA for Fri/Sat.

Dulles 95/98 :lmao:

DCA all-time June record is 102 (tied last year) and IAD's is 100. Other than the 105 on 6/29/34 at BWI, no June temp has gone above 101.

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lol at Mark and Berk arguing over 850 temps and Debby on twitter

He thinks Debby is going to control the strength of the ridge and will be the ultimate deciding factor on how hot we get... he's wrong. The upstream ridge and subsequent pattern is affecting and steering Debby, not the other way around. Debby is far too weak (EDIT: and is too far away) to have a substantial latent heat+ridge building effect.

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He thinks Debby is going to control the strength of the ridge and will be the ultimate deciding factor on how hot we get... he's wrong. The upstream ridge and subsequent pattern is affecting and steering Debby, not the other way around. Debby is far too weak (EDIT: and is too far away) to have a substantial latent heat+ridge building effect.

Couldn't it help create a weakness on the EC? Could see that at least stunting the longevity if not intensity.

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Couldn't it help create a weakness on the EC? Could see that at least stunting the longevity if not intensity.

Here's my problem with that possibility (map for Thursday evening):

post-96-0-05499100-1340720726_thumb.png

Comparing the 00z runs, the Euro has a similar ridge anomaly placement in the Mid-Atlantic, and Debby is basically out of the picture for the U.S.

The ridge is already built up over the central US as it starts to translate eastward. The main difference between the models is handling the central Canadian trough, which will dictate the downstream amplification and northward progression of the ridge. By Thursday evening, the ridge is already coming into place in the Mid-Atlantic.

Debby's way too small to produce any noticable effects in the Mid-Atlantic. If the two solutions had a similar handling of the central US stuff as it translated eastward and Debby was the only variable, if anything the 00z GFS should be warmer than the 00z Euro because it keeps Debby offshore but more under the ridge, and the latent heat (limited as it is) from Debby would cause the ridge to actually build further over the region.

If Debby was much closer and could interact with the trough over the Northeast, I would agree that Debby might have a cooling impact, but that's just not the case. If the heat doesn't pan out, it won't be because of Debby but rather the upstream developments of the US ridge and central Canadian trough (and associated precipitation).

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The Euro backed off a bit, with the 104 contour now Richmond and south. 850s are between 23-25 during the day, with the 28+ contour down from TN to SC.

although last week was hot, the humidity wasn't as bad as usual

if this is a repeat then it won't be as bad as it can get

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although last week was hot, the humidity wasn't as bad as usual

if this is a repeat then it won't be as bad as it can get

Very true. This is nothing like latter July 2011.

Euro wants to get us in this repeating pattern where the obscene heat builds in the middle of the country, and then breaks over us. Could make for very high temps for those periods, but would be drier and more periodic than the dome of death that sat on us last year.

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