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Category 4 Hurricane Florence with 140 mph (220 km/h) sustained winds is menacing the Carolinas and Virginia. It is expected to become a Category 5 Hurricane. Tropical Storm Isaac menaces the Lesser Antilles and Caribbean. Hurricane Helene looks like it is turning toward Europe. See updates here: https://www.nhc.noaa.gov , weather.gov and your preferred weather source.

Hurricane Florence:
“SUMMARY OF 500 AM AST…0900 UTC…INFORMATION
———————————————-
LOCATION…26.4N 64.1W
ABOUT 410 MI…660 KM S OF BERMUDA
ABOUT 975 MI…1570 KM ESE OF CAPE FEAR NORTH CAROLINA
MAXIMUM SUSTAINED WINDS…140 MPH…220 KM/H
PRESENT MOVEMENT…WNW OR 290 DEGREES AT 15 MPH…24 KM/H
MINIMUM CENTRAL PRESSURE…944 MB…27.88 INCHES” (NHC)
“The updated NHC intensity forecast once again calls for additional intensification and brings Florence to near category 5 strength within the next 24 to 36 hours. After 48 hours, a slight increase in southwesterly shear could result in some weakening, but Florence is expected to remain an extremely dangerous hurricane when it approaches the U.S. coastline. ” https://www.nhc.noaa.gov/text/refresh/MIATCDAT1+shtml/110856.shtml

Detailed 5 am AST updates for Hurricanes Florence, Helene and TS Isaac found further below.

https://oceanservice.noaa.gov/news/historical-hurricanes/

All hurricanes: https://oceanservice.noaa.gov/news/historical-hurricanes/


Hurricanes Florence and Helene, and Tropical Storm Isaac; orange skulls (added by us) are nuclear power stations-facilities.

Hurricane Florence uncertainty bubble 5 am AST with nuclear power stations.

See updates and details of map meanings here: https://www.nhc.noaa.gov

Brunswick Nuclear Power Station facing the Atlantic

Brunswick Nuclear Power Station has had Emergency Diesel Generator problems in the past: “All EDG unable to be operated locally due to incorrect relay wiring WHITE EA-09-121” See: https://www.greenpeace.org/usa/wp-content/uploads/2016/05/nuclear-near-misses-a-decade-of-accidents-at-us-nuclear-energy-power-plants-may-2016-3mb.pdf
Nuclear power stations are dangerous and unreliable electricity sources in extreme weather. One of the most dangerous, and often ignored, things about nuclear energy is that nuclear power stations always have need for backup energy supplies for cooling of the nuclear reactors, and spent fuel pools, as dramatically demonstrated by the never-ending Fukushima Daiichi nuclear disaster. If they lose offsite power, then they are dependent upon backup generators, which can fail to start, fail once started or run out of fuel. In Louisiana, a routine thunderstorm led to a scram at River Bend Nuclear Power Station due to a power surge, followed by a loss of cooling, supposedly the next day. Loss of cooling can lead to a nuclear meltdown, if not corrected quickly enough. See: https://miningawareness.wordpress.com/2018/09/03/tropical-storm-watch-for-us-gulf-coast-2-am-update-reminder-of-the-dangers-of-mixing-severe-weather-with-nuclear-power-another-tropical-storm-in-atlantic/ https://miningawareness.wordpress.com/2016/01/03/nuclear-strategic-alliance-for-flex-emergency-response-safer-not-depends-on-emergency-resources-which-may-be-needed-elsewhere-unavailable/

5 AM Advisories for Florence, Helene, and Isaac
“030
WTNT31 KNHC 110904 CCA
TCPAT1

BULLETIN
Hurricane Florence Advisory Number 48…Corrected
NWS National Hurricane Center Miami FL AL062018
500 AM AST Tue Sep 11 2018

Corrected time of next advisory

…HURRICANE AND STORM SURGE WATCHES ISSUED FOR PORTIONS OF THE
COASTS OF NORTH AND SOUTH CAROLINA…

SUMMARY OF 500 AM AST…0900 UTC…INFORMATION
———————————————-
LOCATION…26.4N 64.1W
ABOUT 410 MI…660 KM S OF BERMUDA
ABOUT 975 MI…1570 KM ESE OF CAPE FEAR NORTH CAROLINA
MAXIMUM SUSTAINED WINDS…140 MPH…220 KM/H
PRESENT MOVEMENT…WNW OR 290 DEGREES AT 15 MPH…24 KM/H
MINIMUM CENTRAL PRESSURE…944 MB…27.88 INCHES

WATCHES AND WARNINGS
——————–
CHANGES WITH THIS ADVISORY:

A Storm Surge Watch has been issued for the east coast of the
United States from Edisto Beach, South Carolina northward to
the North Carolina-Virginia border, including the Pamlico and
Albemarle Sounds.

A Hurricane Watch has been issued for the east coast of the United
States from Edisto Beach, South Carolina, northward to the
North Carolina-Virginia border, including the Pamlico and Albemarle
Sounds.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Storm Surge Watch is in effect for…
* Edisto Beach South Carolina to the North Carolina-Virginia border
* Albemarle and Pamlico Sounds, including the Neuse and Pamlico
Rivers

A Hurricane Watch is in effect for…
* Edisto Beach South Carolina to the North Carolina-Virginia border
* Albemarle and Pamlico Sounds

Interests elsewhere in the southeastern and mid-Atlantic states
should monitor the progress of Florence. Additional watches 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 Hurricane Watch means that hurricane conditions are possible
within the watch area. A watch is typically issued 48 hours
before the anticipated first occurrence of tropical-storm-force
winds, conditions that make outside preparations difficult or
dangerous.

For storm information specific to your area, including possible
inland watches and warnings, please monitor products issued by your
local National Weather Service forecast office.

DISCUSSION AND OUTLOOK
———————-
At 500 AM AST (0900 UTC), the center of Hurricane Florence was
located near latitude 26.4 North, longitude 64.1 West. Florence is
moving toward the west-northwest near 15 mph (24 km/h). A west-
northwestward to northwestward motion with a slight increase in
forward speed are expected during the next couple of days. On the
forecast track, the center of Florence will move over the
southwestern Atlantic Ocean between Bermuda and the Bahamas through
Wednesday, and approach the coast of North Carolina or South
Carolina on Thursday.

Maximum sustained winds are near 140 mph (220 km/h) with higher
gusts. Florence is a category 4 hurricane on the Saffir-Simpson
Hurricane Wind Scale. Some strengthening is expected during the
next day or so, and Florence is expected to be an extremely
dangerous major hurricane through Thursday night.

Hurricane-force winds extend outward up to 40 miles (65 km) from the
center and tropical-storm-force winds extend outward up to 150 miles
(240 km).

The estimated minimum central pressure is 944 mb (27.88 inches).

HAZARDS AFFECTING LAND
———————-
STORM SURGE: The combination of a dangerous storm surge and the
tide will cause normally dry areas near the coast to be flooded by
rising waters moving inland from the shoreline. The water has the
potential to reach the following heights above ground if peak surge
occurs at the time of high tide…

Edisto Beach to Murrells Inlet…2-4 ft
Murrells Inlet to Cape Fear…4-6 ft
Cape Fear to Cape Lookout including The Neuse and Pamlico
River…6-12 ft
Cape Lookout to Ocracoke Inlet…5-8 ft
Ocracoke Inlet to North Carolina/Virginia Border…3-5 ft

The deepest water will occur along the immediate coast in areas of
onshore winds, where the surge will be accompanied by large and
destructive waves. Surge-related flooding depends on the relative
timing of the surge and the tidal cycle, and can vary greatly over
short distances. For information specific to your area, please see
products issued by your local National Weather Service forecast
office.

RAINFALL: Florence is expected to produce total rainfall
accumulations of 15 to 20 inches with isolated maxima to 30 inches
near Florence’s track over portions of North Carolina, Virginia, and
northern South Carolina through Saturday. This rainfall may produce
life-threatening flash flooding.

WIND: Hurricane conditions are possible within the watch area by
late Thursday or Thursday night, with tropical storm conditions
possible by Thursday morning.

SURF: Swells generated by Florence are affecting Bermuda and
portions of the U.S. East Coast. These swells are likely to cause
life-threatening surf and rip current conditions. Please consult
products from your local weather office.

NEXT ADVISORY
————-
Next intermediate advisory at 800 AM AST.
Next complete advisory at 1100 AM AST.

$$
Forecaster Brown
https://www.nhc.noaa.gov/text/refresh/MIATCPAT1+shtml/110904.shtml

WTNT34 KNHC 110831
TCPAT4

BULLETIN
Tropical Storm Isaac Advisory Number 15
NWS National Hurricane Center Miami FL AL092018
500 AM AST Tue Sep 11 2018

…ISAAC REMAINS A STRONG TROPICAL STORM OVER THE CENTRAL TROPICAL
ATLANTIC…

SUMMARY OF 500 AM AST…0900 UTC…INFORMATION
———————————————-
LOCATION…14.6N 48.1W
ABOUT 880 MI…1420 KM E OF THE LESSER ANTILLES
MAXIMUM SUSTAINED WINDS…70 MPH…110 KM/H
PRESENT MOVEMENT…W OR 270 DEGREES AT 14 MPH…22 KM/H
MINIMUM CENTRAL PRESSURE…997 MB…29.44 INCHES

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

Interests in the Lesser Antilles should monitor the progress of
Isaac.

DISCUSSION AND OUTLOOK
———————-
At 500 AM AST (0900 UTC), the center of Tropical Storm Isaac was
located near latitude 14.6 North, longitude 48.1 West. Isaac is
moving toward the west near 14 mph (22 km/h). This general motion
is expected to continue through the end of the week. On the forecast
track, Isaac should move across the Lesser Antilles and into the
eastern Caribbean Sea on Thursday.

Maximum sustained winds remain near 70 mph (110 km/h) with higher
gusts. Little change in strength is forecast during the next few
days, but Isaac is forecast to be at or near hurricane strength as
it approaches the Lesser Antilles.

Tropical-storm-force winds extend outward up to 45 miles (75 km)
from the center.

The estimated minimum central pressure is 997 mb (29.44 inches).

HAZARDS AFFECTING LAND
———————-
RAINFALL: Isaac is expected to produce total rainfall accumulations
of 2 to 4 inches with isolated amounts near 6 inches across the
Leeward Islands late this week, with 1 to 2 inches anticipated
across the Windward Islands.

NEXT ADVISORY
————-
Next complete advisory at 1100 AM AST.

$$
Forecaster Cangialosi
https://www.nhc.noaa.gov/text/refresh/MIATCPAT4+shtml/110831.shtml

WTNT33 KNHC 110833
TCPAT3

BULLETIN
Hurricane Helene Advisory Number 16
NWS National Hurricane Center Miami FL AL082018
500 AM AST Tue Sep 11 2018

…HELENE MOVING NORTHWESTWARD OVER THE EASTERN ATLANTIC…

SUMMARY OF 500 AM AST…0900 UTC…INFORMATION
———————————————-
LOCATION…16.0N 33.6W
ABOUT 620 MI…995 KM W OF THE SOUTHERNMOST CABO VERDE ISLANDS
ABOUT 1570 MI…2530 KM SSW OF THE AZORES
MAXIMUM SUSTAINED WINDS…110 MPH…175 KM/H
PRESENT MOVEMENT…WNW OR 300 DEGREES AT 14 MPH…22 KM/H
MINIMUM CENTRAL PRESSURE…968 MB…28.59 INCHES

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

DISCUSSION AND OUTLOOK
———————-
At 500 AM AST (0900 UTC), the center of Hurricane Helene was located
near latitude 16.0 North, longitude 33.6 West. Helene is moving
toward the west-northwest near 14 mph (22 km/h), and this motion is
expected to continue with a decrease in forward speed through
tonight. A turn toward the northwest and then north-northwest is
forecast on Wednesday and Thursday.

Maximum sustained winds are near 110 mph (175 km/h) with higher
gusts. Some strengthening is possible during the next 12 hours, but
a gradual weakening trend is expected after that time.

Hurricane-force winds extend outward up to 35 miles (55 km) from the
center and tropical-storm-force winds extend outward up to 115 miles
(185 km).

The estimated minimum central pressure is 968 mb (28.59 inches).

HAZARDS AFFECTING LAND
———————-
None

NEXT ADVISORY
————-
Next complete advisory at 1100 AM AST.

$$
Forecaster Roberts
https://www.nhc.noaa.gov/text/refresh/MIATCPAT3+shtml/110833.shtml

Published on Sept 11, 2018 at 10.43 AM UTC, which is 6.43 am EDT.