Posted on 09/02/2019 7:50:54 AM PDT by NautiNurse
Catestrophic Hurricane Dorian was assigned Category 5 status by the NHC Sunday, September 1 at 0800. Since then Hurricane Dorian reached maximum sustained winds of 185 MPH, with gusts exceeding 220 MPH, and storm surge 18-23 feet above normal tide levels as it made landfall across Great Abaco Island in the Bahamas. Dorian became the strongest hurricane in modern records for the Northwestern Bahamas.
Dorian has wrought extreme wind and flood damage to Abacos and Grand Bahama Island as it crawled slowly across the Northern Bahamas.
All interests along the Atlantic coast should continue monitoring conditions and forecasts as powerful Hurricane Dorian moves very close to the US coastline. Evacuation orders have been issued for many Atlantic coastal communities in the Southeast US. Evacuations include multiple hospitals and nursing homes along the coast with anticipated dangerous storm surge and battering waves.
Wind speed is expected to weaken and fluctuate in the coming days as the storm moves northward.
Satellite Imagery Dorian
NHC Public Advisories
NHC Discussions
Florida Radar Loop (with storm track overlay)
Buoy Data with Storm Track overlay
Previous thread: Hurricane Dorian Live Thread
That live cellphone video is insane.
bump to the top
South Carolina Ping 
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SC FReepers may be interested in this. From The Island Packet via The Aiken Standard:
Gov. orders S.C. coastal evacuation as Dorian hits Bahamas.
Short excerpt:
Counties included in the evacuation order are all or portions of Charleston, Berkeley, Dorchester, Beaufort, Colleton, Jasper, Georgetown and Horry.
2 effects... that are running counter to one another:
-- as the storm ages, it naturally will increase in overall size.
-- because it's hovering over a land area (albeit not much of one), it will tend to weaken somewhat.
The gotcha here involves just how long it sits and waits before getting going again. Right now the models are assuming a set of facts concerning the atmospherics in the region that are time-constrained. The longer it takes to get his barge moving again, those parameters will change, and thus the forecast could change.
TL;DR version: if it moves on schedule, the models will be right.
Keeping fingers crossed for you and your family.
Thank you! Plan is to make sure her home has electricity and potable water before driving back to the east coast in a few days. Meanwhile, fixed up a pot of chicken and dumplings for dinner last night. Comfort food is another pre-storm necessity.
Reversal of lanes is now on.
The SCHP flush cars have arrived back in Columbia, SC and the reversal of I-26 from Charleston to Columbia is complete for the noon evacuation order. #Dorian #scwx #sctweets
It depends on the source.
Most codes depend upon simulation models, which use the “Basic Wind Speed” or “V” as a 3-second gust speed at 33 ft (10m) above the ground in Exposure C (say open countryside grasslands with few scattered obstructions less than 30 ft, say over 1500 ft apart.)
Some codes further stipulate design wind speeds must be made by simulation, vice anemometers in hurricane prone regions.
If reported from an anemometer in an suburban or urban area with obstructions such as trees, poles, towers, bldgs, hills over 30 ft, and taken at ground level, then the 10 meter reading might be 30% greater.
Bldgs such as fire departments and police stations are designed for V=150mph generally throughout the east coast, and upwards of 200mph on the southern tip of Florida.
But if you have a short hill on a plain, the wind speed would increase at the top.
https://twitter.com/cnni/status/1168560493201633286
CNN International
Verified account
@cnni
“That’s my kitchen window that water is hitting, and that has to be a minimum of about 20 feet above the ground.” Bahamas Minister for Agriculture Michael Pintard describes flooding from Hurricane Dorian at his house in Grand Bahama. https://cnn.it/32qc02z
9:25 AM - 2 Sep 2019
https://twitter.com/kionnemcghee/status/1168540276949954560
Dem House Leader
Verified account
@kionnemcghee
Member of Parliament,
Central Grand Bahama sent me this video of Freeport International Airport: FPO
8:04 AM - 2 Sep 2019
It's like going to USA Today for hard news.
It's like going to McDonalds for a gourmet meal.
It's like agreeing to a high pressure four-hour time share presentation in exchange for a "free weekend getaway".
Summary Of 100 PM EDT...Information
----------------------------------------------
Location: About 25 MI...NE of Freeport, Grand Bahama Island
About 105 MI...E of West Palm Beach FL
Max Sustained Winds...155 MPH...
Movement:...WNW at 1 MPH...
Pressure...922 MB...
Hazards:
- Wind Gusts to 190 mph
- Storm Surge 18 to 23 feet above normal tide levels with higher
destructive waves
On/Off Hurricane List Mash Here--> 
Our storm chaser was sent home 2 days ago and 45 minutes from home they called and the whole convy was told told to turn around and come back.
How in the world is the water not getting inside that home? Must be built like a ship or a submarine. Windows are portholes. Incredible!
Uh oh. I know Martin Co. FL canceled their evacuations and then had to reinstate them in less than 12 hours.
I saw elsewhere that linemen, etc were staging at Daytona Speedway. Isn’t that awfully close to being affected by Dorian?
If you look closely, I believe there is water on that floor of his home. It’s just hard to discern it. At least to my eyes, it looks like water.
Not me, pre adoption,
I was 5 years old when my uncle threw me off the public
swimming pool hi diving board “ to learn how to swim”.
To this day I believe I could drown in the shower
I am 63 years old
What would the Weather Channel have to do if they couldn’t be out hyping catastrophic weather events?
I was in a pay weekly on the Lauderdale beach when David hit
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