Dorian Discussion Thread

Justin Allen

Tropical Guru/Paramedic
Staff member
Oct 10, 2018
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New Orleans, La
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Tropical Depression Five Advisory Number 1
NWS National Hurricane Center Miami FL AL052019
1100 AM AST Sat Aug 24 2019

...NEW TROPICAL DEPRESSION FORMS EAST-SOUTHEAST OF THE LESSER
ANTILLES...


SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...10.4N 47.9W
ABOUT 805 MI...1300 KM ESE OF BARBADOS
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...W OR 280 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...1010 MB...29.83 INCHES


WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.

Interests in the central and northern Lesser Antilles should
monitor the progress this system.


DISCUSSION AND OUTLOOK
----------------------
At 1100 AM AST (1500 UTC), the center of newly formed Tropical
Depression Five was located near latitude 10.4 North, longitude
47.9 West. The depression is moving toward the west near 12 mph
(19 km/h) and this general motion is expected to continue today.
A turn toward the west-northwest is forecast on Sunday, and that
motion is expected to continue through Tuesday. On the forecast
track, the tropical cyclone is expected to be near the central
Lesser Antilles on Tuesday.

Maximum sustained winds are near 35 mph (55 km/h) with higher gusts.
Gradual strengthening is forecast during the next few days, and the
depression is forecast to become a tropical storm later tonight or
on Sunday.

The estimated minimum central pressure is 1010 mb (29.83 inches).
 

Dan Robinson

Staff member
Jan 14, 2011
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St. Louis
stormhighway.com
This is one to keep an eye on - though spread is huge, long-range models suggest a US landfall may be possible. We're obviously too far out to even take a guess at this stage, and medium-term guidance shows a very slow rate of intensification.
 

Justin Allen

Tropical Guru/Paramedic
Staff member
Oct 10, 2018
62
16
6
New Orleans, La
www.helicity.co
We have tropical storm Dorian now.



BULLETIN
Tropical Storm Dorian Advisory Number 3
NWS National Hurricane Center Miami FL AL052019
1100 PM AST Sat Aug 24 2019

...DORIAN MOVING STEADILY WESTWARD...
...WATCHES WILL LIKELY BE NECESSARY FOR PORTIONS OF THE LESSER
ANTILLES ON SUNDAY...


SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION
-----------------------------------------------
LOCATION...10.9N 50.4W
ABOUT 635 MI...1020 KM ESE OF BARBADOS
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...W OR 280 DEGREES AT 14 MPH...22 KM/H
MINIMUM CENTRAL PRESSURE...1008 MB...29.77 INCHES


WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.

Interests in the central and northern Lesser Antilles should
monitor the progress of Dorian.


DISCUSSION AND OUTLOOK
----------------------
At 1100 PM AST (0300 UTC), the center of Tropical Storm Dorian was
located near latitude 10.9 North, longitude 50.4 West. Dorian is
moving toward the west near 14 mph (22 km/h). The tropical storm is
forecast to move generally west-northwestward at a similar forward
speed for the next several days. On the forecast track, Dorian is
expected to be near the central Lesser Antilles on Tuesday.

Maximum sustained winds are near 40 mph (65 km/h) with higher gusts.
Gradual strengthening is forecast during the next few days, and
Dorian could be near hurricane strength when it approaches the
central Lesser Antilles on Tuesday.

Tropical-storm-force winds extend outward up to 25 miles (35 km)
from the center.

The estimated minimum central pressure is 1008 mb (29.77 inches).
 

Dan Robinson

Staff member
Jan 14, 2011
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St. Louis
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Still a good agreement on a US landfall, with the main jet corridor staying well to the north which should keep shear and westerly steering flow at bay. The operational GFS runs showing a recurving track NE are a little puzzling given they show the same jet configuration as all other models that agree on the westerly track. No surprise that intensity guidance has been steadily trending upward as well given the transit across the Gulf Stream waters.

Chaseability-wise, Dorian is still very much a good candidate, with many solid shelter options within the current range of landfall locations and probable Cat 2+ intensity. The wild card is timing - overnight landfall is looking more likely with each update. Nonetheless, I definitely have my eye on this one for a chase.

We may even have a second landfall possibility on the Gulf coast to watch for, particularly for a more southerly track.
 
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Have initiated the green light for Dorian.

Really a fantasy forecast at this time, as once the storm transitions into a hurricane, which is likely, the models will have a better handle on the track. I will need to study the potential strike zone carefully, as I don't recall too many chase opportunities in the NASA zone, although that is a relatively small region and not a big concern. Otherwise, bring it on as there is great infrastructure all along the coast. Hopefully it will be a day time storm, but too far out to call now.

I'm sure TWC is getting everyone limbered up for the moon-walking.
 
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Dan Robinson

Staff member
Jan 14, 2011
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Like Michael, the Dorian forecast is going from zero to 100 fast with further slowing and more transit time over the Gulf Stream. With that the chaseability also improves with sunrise or later landfall on Monday morning. Radar presentation from KJUA (Puerto Rico) already showing a healthy and intensifying storm.

dorian1.gif
 
All booked and set with multiple staging and deployment options along the Florida coast. I generally wait to board the plane at the last moment, but I will likely add another day to the scouting schedule since this will likely be a panic-generator along the Florida east (and maybe west) coasts. Gas will be going quickly. Set to depart on Friday afternoon barring a major shift in landfall timing. Had to add the Miami region to the overall plan as there could be a shift south / west if the NE high builds.
 
Aug 9, 2012
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Galesburg, IL
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Booked my flight into Melbourne last night to arrive late Saturday night. My chase partner is coming down from North Carolina (from prior engagements) and we are going to tackle this one together. Will make a decision as to staging locations when it gets closer.
 
Oct 12, 2005
102
3
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Little Elm Texas
I'm going for a reinforced parking garage first as this could easily go cat 4+. Michael ate my 360 cam last year so I'm going to play this storm a little more strategically. Its all down to logistics now. If I can get there in a good position and setup on time I'm in. Daytime landfall is always a huge win photography wise :)
 
Just remember many garages are now locking their entrances once a storm approaches, so don't get trapped inside or worse, find it closed if returning at the last moment. I've called along the coast this morning and now that a Category 4 storm is being discussed, many hotels on the coast side are closing on Saturday.
 

cdcollura

EF5
Jun 12, 2004
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Good day all,

Still early to pinpoint landfall point in Florida but I wasn't even supposed to be in Florida now (my return to S California was on 8/27 and I moved it up to 9/4). Right now it appears to be a category 4 (130 MPH) at landfall anywhere on central east coast of Florida during the day on Monday (Labor Day, Sept 2).

The next few days will be crucial.
 
Jun 18, 2017
42
20
11
Tennessee
I haven't caught up much on Dorian, but it might be interesting to see how Dorian does over the weekend. Last thing we need is a Category 4/5 hitting Miami or Florida's east coast, however. Given current predicted track, Miami probably would not see the worst of it, but never know.
 
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Jun 18, 2017
42
20
11
Tennessee
Yes, but it may get more interesting should Dorian cross Florida, but Dorian can wallop the lights out of FL's east coast should maximum surge be realized thanks to king tide and Cat. 4 strength. That could be a huge concern when Dorian hits that portion of FL.
 
Not enjoying the latest model runs forecasting a stalled hurricane over the same area for days. This would likely erode or clog coastal highways with debris for an extended period. I've also discovered the main garages in Daytona Beach are securing and shutting down Sunday night.
 

James K

EF2
Mar 26, 2019
179
72
6
Colorado
Seeing the latest NHC update, its up to 105mph / Cat-2 now. Expected to reach Cat-3 Friday.

The current graphics they show sure looks like it will cross Fl? Unless it turns north after hitting?
 
Jun 16, 2015
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Oklahoma City, OK
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The steering currents look fairly weak in the medium range. There's a trough ejecting east from the Great Lakes/Hudson Bay vicinity now. Unlike most historical analogs (late summer hurricane near Dorian's current position), instead of continuing northwest or turning north up the coast, the models are basically unanimous in a WNW turn over the next couple of days.

It's beyond that when things get tricky. Dorian likely slows down, but does it continue drifting west, does it stall or do some sort of loop near Florida, or does it eventually turn north? That eventual turn is key, if it does happen. When it happens will have major implications for not only Florida, but the Carolinas, Georgia and possibly Alabama as well.

Even though the tracks are not indicative of what's a realistic scenario here, all of the analogs that featured a northwest-moving hurricane near Dorian's latest position are all historic storms:
Connie, Floyd, Fran, Gloria, Hugo and the 1898 unnamed hurricane. Of those that continued moving northwest (1898 and Hugo), both made landfall as a Category 4 hurricane.

 
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The irony.... my flight from Tucson to Miami was cancelled because of the line of storms that passed through Dallas. No way to reroute ATM and get there before late tomorrow. Might have to consider flying in further north (Atlanta) and heading south. Less panic further north, at least for the moment. Hopefully the outright panic in Miami will settle down. Have not had time to look at the models, but the NHC seems to be leaning toward either a coast skimmer or off coast event. Next 24 hours will be interesting.
 
Jul 2, 2016
71
20
11
Independence, Mo.
The irony.... my flight from Tucson to Miami was cancelled because of the line of storms that passed through Dallas. No way to reroute ATM and get there before late tomorrow. Might have to consider flying in further north (Atlanta) and heading south. Less panic further north, at least for the moment. Hopefully the outright panic in Miami will settle down. Have not had time to look at the models, but the NHC seems to be leaning toward either a coast skimmer or off coast event. Next 24 hours will be interesting.
Maybe, S.Carolina will be better ?
:rolleyes: