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re: Delta Moves On...Cleanup Begins

Posted on 10/8/20 at 6:33 pm to
Posted by LegendInMyMind
Member since Apr 2019
75080 posts
Posted on 10/8/20 at 6:33 pm to
quote:

yah they fly at different levels to prevent crashes.

Pretty damn cool

I posted a link to a Twitter video earlier where they passed within seeing distance of each other in the eye.
Posted by rt3
now in the piney woods of Pineville
Member since Apr 2011
147074 posts
Posted on 10/8/20 at 6:33 pm to
1 plane penetrating eyewall now from the north

other plane just turned towards the eye from the outer ends of the storm... making a NE to SW run
Posted by LegendInMyMind
Member since Apr 2019
75080 posts
Posted on 10/8/20 at 6:35 pm to
quote:

1 plane penetrating eyewall now from the north

other plane just turned towards the eye from the outer ends of the storm... making a NE to SW run

Air Traffic Control to the eye of Delta, please.
Posted by rt3
now in the piney woods of Pineville
Member since Apr 2011
147074 posts
Posted on 10/8/20 at 6:38 pm to
highest SFMR reading I recall seeing of late is 95 kts or 110 MPH
This post was edited on 10/8/20 at 6:39 pm
Posted by deltaland
Member since Mar 2011
102632 posts
Posted on 10/8/20 at 6:44 pm to
quote:

highest SFMR reading I recall seeing of late is 95 kts or 110 MPH


That’s a bit stronger, earlier it was 90 Kts when they upgraded to a 3. They took the flight level and SFMR readings and extrapolated it
Posted by rt3
now in the piney woods of Pineville
Member since Apr 2011
147074 posts
Posted on 10/8/20 at 6:45 pm to
quote:

They took the flight level and SFMR readings and extrapolated it

wish I understood this process sometimes
Posted by Impotent Waffle
Baton Rouge
Member since Sep 2007
10129 posts
Posted on 10/8/20 at 6:47 pm to
We getting some rain in BR. Kids are playing in it...
Posted by deltaland
Member since Mar 2011
102632 posts
Posted on 10/8/20 at 6:47 pm to
quote:

Northwestern part of storm looks to be strongest


The shear that is supposed to weaken the storm will be southwesterly so be looking for the West and Southern portions to start looking less organized whenever the storm does encounter the shear. That’s when you’ll know it will start weakening, you’ll see the convection collapse as it tries to expand outward and the shear blows it back eastward
Posted by Cosmo
glassman's guest house
Member since Oct 2003
131516 posts
Posted on 10/8/20 at 6:47 pm to
quote:

I’m starting to get this sinking feeling that between now and 6am this storm is going to start banking East.


Wishcasting depression sinking in
Posted by LegendInMyMind
Member since Apr 2019
75080 posts
Posted on 10/8/20 at 6:47 pm to
@pppapin with a good break down of the expected shear:

quote:

Looking at the next 36h with #Delta, one thing that seems clear is that vertical wind shear (VWS) will increase prior to #Louisiana landfall. The current ~10kt of VWS now is forecast to increase to >35kt in 36h.

This likely will lead to weakening, but Delta will remain very dangerous. LINK




Posted by deltaland
Member since Mar 2011
102632 posts
Posted on 10/8/20 at 6:48 pm to
quote:

wish I understood this process sometimes


I think it tends to inflate the strength a bit but I think they do it when the storm is strengthening to account for the time between updates. Basically they figure some of the flight level winds will reach surface before the next recon data so they add a little to it
Posted by rt3
now in the piney woods of Pineville
Member since Apr 2011
147074 posts
Posted on 10/8/20 at 6:48 pm to
now I see 100 kt unflagged SFMR reading from the plane that dove in from the north
Posted by TigerNAtux
Louisiana
Member since Dec 2007
18622 posts
Posted on 10/8/20 at 6:49 pm to
Is that dry air on the NNE side of Delta? Last GEO frame.
Posted by NorthEndZone
Member since Dec 2008
14278 posts
Posted on 10/8/20 at 6:49 pm to
951.3 millibars also but they sometimes adjust it,
Posted by Cosmo
glassman's guest house
Member since Oct 2003
131516 posts
Posted on 10/8/20 at 6:50 pm to
If theres gonna be dry air should be getting sucked in from S/SE
Posted by rt3
now in the piney woods of Pineville
Member since Apr 2011
147074 posts
Posted on 10/8/20 at 6:50 pm to
quote:

The shear that is supposed to weaken the storm will be southwesterly so be looking for the West and Southern portions to start looking less organized whenever the storm does encounter the shear. That’s when you’ll know it will start weakening, you’ll see the convection collapse as it tries to expand outward and the shear blows it back eastward

hopefully some dry air will be included with that shear
Posted by TigerNAtux
Louisiana
Member since Dec 2007
18622 posts
Posted on 10/8/20 at 6:51 pm to
Gotcha’. Just looks puny on the north side in that last frame.

Posted by Duke
Dillon, CO
Member since Jan 2008
36494 posts
Posted on 10/8/20 at 6:51 pm to
They'll drop a sonde into the center to get the exact pressure. The extrap from the plane has been running too low but I'd think 955-954 mb seems reasonable with what we're seeing in terms of wind.
Posted by rt3
now in the piney woods of Pineville
Member since Apr 2011
147074 posts
Posted on 10/8/20 at 6:52 pm to
the plane that was coming from the north... looked like it expected the storm to be more west and then had to go back east a bit as it got to the eye to find the exact center
Posted by purple18
Lafayette
Member since Aug 2009
1772 posts
Posted on 10/8/20 at 6:52 pm to
Delta looking ragged on the IR satilite loop
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