Newman

Yeah you can see on radar it's almost like a spinning comma head taking shape, a Mesoscale Convective Vortex (MCV). Harrisburg got punched straight with that part of the line

My brother and friend went to chase and are in Palmyra right now, I told them to stay put the storm is almost there.

It's almost like that line is trying to form a MCV

Tornado warning just south of you in MD! Should stay just to your west

New tornado warning for the tail of that line just south of Gettysburg

Some discrete cells forming ahead of that primary line, possible brief spinups in those

Yeah even the hefty 970some millibar HWRF would become unimpressive (wind wise) for those in SNE. Too slow and too much decay. In 18 hours, verbatim, it practically goes from a nicely stacked borderline CAT 2/3 cane to a slow moving, decaying TS/Low end Cat 1. Sure flooding would be bad for where it stalls, maybe horrific in spots. But if you're looking for 1938 type winds, well that was booking almost 50mph forward speed and this ain't that.

The Euro practically has an open wave at this latitude compared to the NHC forecast, GFS, UKMET, CMC which at least have some semblance of a tropical/extratropical system.

Euro still isn't initializing Henri correctly. Still only shows it as a 1011mb low pressure compared to the GFS which correctly initializes ~996mb

Central PA, I'm well out of this. I'm tracking this and rooting for you guys

Clear trend west. Some members even take this into Jersey now

Probability of Watch Issuance...80 percent SUMMARY...The tornado threat is expected to gradually increase into this afternoon. Tornado Watch issuance is likely by 16Z. DISCUSSION...At 1445Z, T.D. Fred is still moving northeastward near the OH/WV border northeast of Parkersburg, WV. A warm front extends east-northeast from the cyclone across southern PA, while a surface confluence axis is noted extending from southwest PA into central VA. Rich low-level moisture will continue to stream northward across PA in conjunction with the warm front this afternoon, with some breaks in the clouds allowing for some modest destabilization from central PA southward into MD/northern VA. Convection will likely increase in coverage with time near/north of the warm front, with more scattered convection possible along/east of the surface confluence axis into MD/northern VA. This afternoon, 0-1 km SRH will likely be maximized over central PA (potentially in excess of 200 m2/s2), though somewhat enhanced SRH will also extend southward into MD/VA where surface winds remain backed to a southeasterly direction. Scattered supercells are likely to evolve with time as convection matures, with an attendant threat of a few tornadoes and isolated/scattered damaging wind gusts. Tornado Watch issuance is likely by 16Z in response to these threats.

Probability of Watch Issuance...80 percent SUMMARY...The tornado threat is expected to gradually increase into this afternoon. Tornado Watch issuance is likely by 16Z. DISCUSSION...At 1445Z, T.D. Fred is still moving northeastward near the OH/WV border northeast of Parkersburg, WV. A warm front extends east-northeast from the cyclone across southern PA, while a surface confluence axis is noted extending from southwest PA into central VA. Rich low-level moisture will continue to stream northward across PA in conjunction with the warm front this afternoon, with some breaks in the clouds allowing for some modest destabilization from central PA southward into MD/northern VA. Convection will likely increase in coverage with time near/north of the warm front, with more scattered convection possible along/east of the surface confluence axis into MD/northern VA. This afternoon, 0-1 km SRH will likely be maximized over central PA (potentially in excess of 200 m2/s2), though somewhat enhanced SRH will also extend southward into MD/VA where surface winds remain backed to a southeasterly direction. Scattered supercells are likely to evolve with time as convection matures, with an attendant threat of a few tornadoes and isolated/scattered damaging wind gusts. Tornado Watch issuance is likely by 16Z in response to these threats.

LOL this might be a bit too much, taken from Mid-Atlantic forum

Latest 11am NHC cone continues to nudge further west

The sun continues to peak in and out here. CAPE on the increase

Latest 12z Hurricane tracks

Yeah for Central PA, it would take a miracle and a half to get any impacts (other than maybe some breezy conditions?) from Henri. But very fun to watch evolve regardless, SNE and perhaps even as far west as NYC are still very much in play as of now. More hurricane spaghetti models continue to show that capture and tug back west. GFS and UKMET are on board.

Posting this not because I believe it, but because it's funny and deep down we're all weenies... HMON captures future Hurricane Henri into the coast. The GFS is similar, only it captures it into SNE. Same with the UKMET. Whether or not the Philly region gets any impact is up in the air (leaning hard no as of now), but fun to watch it evolve

I think much of South Central PA has a chance at something significant later today, but Harrisburg is probably the bullseye spot to be.