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Tropical Hurricane Isaias

12k 06Z NAM is about 3-4 hours faster and a little West of the 00Z run.
Update: NAM has it also coming right over Wake County at hour 57.
Update 2: Add the 3k high resolution NAM model to the list that now has it crossing directly over Wake County.
 
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No longer forecast to become a hurricane, are mods sure they don’t wanna rename title to tropical storm or they be confusion in Carolinas
 
Flash Flood Watch for Wilkes already for This tropical storm connections
 
2-4” poss here with higher amounts near blue ridge over 4”
 
Wilkes ain’t getting 2-4” from a weak TS going over SD and RC, sorry Larry
 
This storm is something else....it went from looking like something you'd throw out with the garbage to developing what looks like a northern eyewall again in less than 2 hours
 
This storm is something else....it went from looking like something you'd throw out with the garbage to developing what looks like a northern eyewall again in less than 2 hours
Seems very vulnerable to dmin and dmax times with intensity flare ups.
 
If this wasn’t a fast mover this could have been a sig upslope event. But with fast movement, likely gonna be a tornado outbreak Raleigh eastward.
 
The event actually starts tonight8AEE81A2-FF81-4667-8A5F-2EB25480AB51.jpeg with upslope according to WPC and Raysweather. A little minimum East of here near upstate SC and Charlotte.
 
WTNT34 KNHC 021157
TCPAT4

BULLETIN
Tropical Storm Isaias Intermediate Advisory Number 21A
NWS National Hurricane Center Miami FL AL092020
800 AM EDT Sun Aug 02 2020

...HEAVY RAINFALL AND GUSTY WINDS CONTINUE OVER THE NORTHWESTERN
BAHAMAS...
...TROPICAL STORM CONDITIONS CLOSE TO THE EAST COAST OF FLORIDA...


SUMMARY OF 800 AM EDT...1200 UTC...INFORMATION
----------------------------------------------
LOCATION...26.5N 79.5W
ABOUT 40 MI...70 KM ESE OF WEST PALM BEACH FLORIDA
ABOUT 155 MI...245 KM SSE OF CAPE CANAVERAL FLORIDA
MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H
PRESENT MOVEMENT...NW OR 325 DEGREES AT 8 MPH...13 KM/H
MINIMUM CENTRAL PRESSURE...996 MB...29.42 INCHES


WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:

The Hurricane Warning for the Northwestern Bahamas has been
discontinued.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Storm Surge Watch is in effect for...
* Jupiter Inlet to Ponte Vedra Beach Florida
* Edisto Beach South Carolina to Cape Fear North Carolina

A Tropical Storm Warning is in effect for...
* Hallandale Beach Florida to South Santee River South Carolina
* Lake Okeechobee

A Tropical Storm Watch is in effect for...
* North of South Santee River South Carolina to Surf City North
Carolina

Interests elsewhere along the southeast and mid-Atlantic coasts of
the United States should monitor the progress of Isaias. Additional
watches or warnings may be required later today.

A Storm Surge Watch means there is a possibility of life-
threatening inundation, from rising water moving inland from the
coastline, in the indicated locations during the next 48 hours.
For a depiction of areas at risk, please see the National Weather
Service Storm Surge Watch/Warning Graphic, available at
hurricanes.gov.

A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, generally within 36
hours.

A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area, generally within 48 hours.

For storm information specific to your area in the United
States, including possible inland watches and warnings, please
monitor products issued by your local National Weather Service
forecast office. For storm information specific to your area
outside of the United States, please monitor products issued by
your national meteorological service.
 
It is worth noting that if the HRRR is right again (as it had Isaias starting to look better around this time) it has Isaias looking like this in about 11 hours:

View attachment 45754

And has some steady development through the night, so we'll see what happens.
Current IR sat looks eerily similar....
 
This thing either reorganizes under the MLC off the coast or its toast...if it does that then the SC/NC border landfall's we see on many models with a more N movement right up the I95 hwy 17 corridor.....still I wont lie I expected it to be nothing when I woke up so it looks way better on sat than I was expecting.

Also that Ukie sure is consistent with landfall and strength and has been the model to keep it east of Florida, and frankly climo wise its the most likely, storm stays 100 or so miles or more offshore of the SE north of central Florida and plows into the SC/NC border heading NNE, I mean its a favored track for a reason....also its wind clown maps are woof.

us_model-en-087-0_modgbr_2020080200_63_480_379.png

us_model-en-087-0_modgbr_2020080200_66_480_379.png
 
@Webberweather53 If the center does move closer to grand bahama under the deeper storms then that would have to be a somewhat significant development. At least in the since of track up the east coast.
 

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There is a period of time where this system is E of the Ga coast and the shear backs off a little bit. At the same time you have the system in the right entrance of the jet. This would be the window for quick intensification as well as blossoming a large precip shield north of the track. gfs_uv250_seus_7 (1).png

As this moves north from here we are likely to see the precipitation shift to LOT toward the trough axis with help from the increasing jet streak to the northgfs_uv250_us_9.png
 
Imo, Tropical Storm Hanna (2008) is a pretty good analog for what we can generally anticipate area-wide w/ Isaias tomorrow night into Tuesday morning in the Carolinas.


I remember this one well. Sat on the apartment balcony and watched it rain buckets with nearly constant lightning. The wind didn't start really ripping until we almost got on the back side of the system and rain tapered down
 
Imo, Tropical Storm Hanna (2008) is a pretty good analog for what we can generally anticipate area-wide w/ Isaias tomorrow night into Tuesday morning in the Carolinas.


Hanna was my first tropical experience after moving from Charlotte. Charlotte gets jack diddly squat in terms of tropical weather . I very much remember Hanna ! The girl and the storm .
 
There is a period of time where this system is E of the Ga coast and the shear backs off a little bit. At the same time you have the system in the right entrance of the jet. This would be the window for quick intensification as well as blossoming a large precip shield north of the track. View attachment 45800

As this moves north from here we are likely to see the precipitation shift to LOT toward the trough axis with help from the increasing jet streak to the northView attachment 45802

Yeah models typically don't handle this terribly well either
 
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