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re: Sally - Moving towards Georgia - Potential for Significant Flooding

Posted on 9/11/20 at 2:14 pm to
Posted by Cosmo
glassman's guest house
Member since Oct 2003
120327 posts
Posted on 9/11/20 at 2:14 pm to
quote:

I picked the wrong damn year to build a house


There are storms every year in september
Posted by Friedbrie
Abita Springs
Member since Jun 2018
1519 posts
Posted on 9/11/20 at 2:19 pm to
That things about to go beast mode
Posted by deltaland
Member since Mar 2011
90706 posts
Posted on 9/11/20 at 2:27 pm to
HWRF has it as a strong cat 1 almost making landfall at Pensacola then turning west and skirting the entire coast as a hurricane and landfall around Bay St Louis

HMON has it as a Cat 2 into Destin area

Euro is agreeing with the HWRF on track but a weaker system

GFS is showing nothingburger
Posted by rds dc
Member since Jun 2008
19812 posts
Posted on 9/11/20 at 2:29 pm to
quote:


Levi Cowan
@TropicalTidbits
·
3m
[#NerdTweet] Radar suggests that the new thunderstorm north of Andros Island has become a vortical hot tower, rotating in the mid-levels on the east side of the developing surface low. Features like these can speed up the organization of the surface circulation if they persist.


These supercell like storms help to consolidate the low level spin allowing for the mid-level circulation to reach down to the surface. This has been a textbook example of how persistent deep convection drives development.
Posted by Adam39
Member since Nov 2019
347 posts
Posted on 9/11/20 at 2:31 pm to
I apologize for such a ridiculous question, but if it was to come to Louisiana any idea of the landfall date.

Next Wednesday? Possibly next Friday?

Any sort of timeline would be greatly appreciated.
Posted by Duke
Twin Lakes, CO
Member since Jan 2008
35629 posts
Posted on 9/11/20 at 2:31 pm to
quote:

Primary concern with this system appears to be the potential for it to move slow or stall near the coast. 12z Euro has totals over 20" and that is always a red flag.







The upper low that would have been our cold front this week finally ejects east and erodes the Bermuda high as Paulette turns north into that weakness and the ridge doesn't build back in immediately.

Rain definitely the primary concern with this sort of scenario.
Posted by NorthEndZone
Member since Dec 2008
11335 posts
Posted on 9/11/20 at 2:31 pm to
quote:

it does get stuck in no man's land by Tuesday.


It looks like from the models that it moves only ~250-275 miles in 48 hours from Monday to Wednesday. The old rule of thumb of 100 / speed for rainfall in inches would be between 15 and 20 in that case. Not good for wherever is under the max amount of rainfall.
Posted by dukke v
PLUTO
Member since Jul 2006
203072 posts
Posted on 9/11/20 at 2:32 pm to
Rain event for the gulf coast.............
Posted by geauxtigers87
Louisiana
Member since Mar 2011
25208 posts
Posted on 9/11/20 at 2:34 pm to
quote:

Rain event for the gulf coast.............


frick evacuating now
Posted by Bucktail1
Member since Feb 2015
3190 posts
Posted on 9/11/20 at 2:34 pm to
I feel better now
Posted by chicano12
Member since Jun 2010
994 posts
Posted on 9/11/20 at 2:34 pm to
Shut up whore.
Posted by deltaland
Member since Mar 2011
90706 posts
Posted on 9/11/20 at 2:35 pm to
quote:

The ridge pushed Katrina


I got a bingo square
Posted by deltaland
Member since Mar 2011
90706 posts
Posted on 9/11/20 at 2:38 pm to
quote:

Asking rds or Duke to explain dropsonde graph should be on there


Or asking where will Jeff Petrioski be
Or bitching about how Cantore doesn’t get into the good stuff anymore
Asking for a link to storm chaser streams after it’s been posted a dozen times
Posted by mikearch
Member since Feb 2007
222 posts
Posted on 9/11/20 at 2:39 pm to
I picked the wrong damned year to stop sniffing glue!
Posted by Duke
Twin Lakes, CO
Member since Jan 2008
35629 posts
Posted on 9/11/20 at 2:41 pm to
quote:

It looks like from the models that it moves only ~250-275 miles in 48 hours from Monday to Wednesday. The old rule of thumb of 100 / speed for rainfall in inches would be between 15 and 20 in that case. Not good for wherever is under the max amount of rainfall.





It's going to have an upper high sitting just east of it too. Would set up for outflow to be enhanced and upper divergence with a plume of tropical moisture pumping in at the surface is a recipe for efficient rainmaking. Column appears to be pretty saturated too on the east side.

Posted by Klingler7
Houston
Member since Nov 2009
11987 posts
Posted on 9/11/20 at 3:04 pm to
3:00 CDT : current pressure at MIA ( Miami) is 1009.5 mb ( 29.81). -.07 in/hg past 3 hours.
This post was edited on 9/11/20 at 3:08 pm
Posted by lsuman25
Erwinville
Member since Aug 2013
41514 posts
Posted on 9/11/20 at 3:20 pm to
NHC will initiate advisories on the area of low pressure area east of Florida at 5 PM EDT (2100 UTC).
Posted by TheFonz
Somewhere in Louisiana
Member since Jul 2016
20407 posts
Posted on 9/11/20 at 3:22 pm to
Posted by deltaland
Member since Mar 2011
90706 posts
Posted on 9/11/20 at 3:26 pm to
Looks like I picked the wrong year to quit amphetamines
This post was edited on 9/11/20 at 3:27 pm
Posted by upgrayedd
Lifting at Tobin's house
Member since Mar 2013
134865 posts
Posted on 9/11/20 at 3:27 pm to
I gotta be honest, I could use some rain right now
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