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Subtropical Storm Alberto Advisory Number 8
NWS National Hurricane Center Miami FL AL012018
500 AM EDT Sun May 27 2018
...ALBERTO PRODUCING GUSTY WINDS AND HEAVY RAINS OVER SOUTHERN
...NEW TROPICAL STORM WARNINGS ISSUED FOR THE GULF COAST OF
SUMMARY OF 500 AM EDT...0900 UTC...INFORMATION
ABOUT 85 MI...135 KM WNW OF THE DRY TORTUGAS
ABOUT 330 MI...530 KM S OF APALACHICOLA FLORIDA
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...NNE OR 15 DEGREES AT 13 MPH...20 KM/H
MINIMUM CENTRAL PRESSURE...1001 MB...29.56 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY:
A Tropical Storm Warning has been issued along the Gulf coast of
Florida from Anclote River to Aucilla River.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Storm Surge Watch is in effect for...
* Crystal River to the Mississippi/Alabama border
A Tropical Storm Warning is in effect for...
* Dry Tortugas
* Bonita Beach to the Mississippi/Alabama border
A Tropical Storm Watch is in effect for...
* Mississippi/Alabama border to the Mouth of the Pearl River
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 in this case during the next
36 hours. For a depiction of areas at risk, please see the National
Weather Service Storm Surge Watch/Warning Graphic, available at
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area.
A Tropical Storm Watch means that tropical storm conditions are
possible somewhere within the watch area, in this case within the
next 36 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
the United States, please monitor products issued by your national
DISCUSSION AND OUTLOOK
At 500 AM EDT (0900 UTC), the center of Subtropical Storm Alberto
was located near latitude 25.0 North, longitude 84.2 West. The
storm is moving toward the north-northeast near 13 mph (20 km/h). A
turn toward the north is expected later this morning, and a motion
toward the north-northwest is forecast tonight through Monday
night. On the forecast track, the center of Alberto will cross the
eastern and northern Gulf of Mexico through Monday, and make
landfall over the northern Gulf Coast in the warning area Monday
afternoon or Monday night. Heavy rainfall and tropical storm
conditions will likely reach the northern Gulf Coast well before the
arrival of the center of Alberto. Alberto is expected to move
northward into the Tennessee Valley on Tuesday.
Maximum sustained winds are near 40 mph (65 km/h) with higher gusts.
Gradual strengthening is forecast until the system reaches the
northern Gulf Coast on Monday. Steady weakening is expected
after Alberto makes landfall, and it is forecast to become a
tropical depression by Tuesday.
Winds of 40 mph extend outward up to 150 miles (240 km) mainly to
the east of the center. The NOAA automated station at Pulaski
Shoals, Florida, recently reported sustained winds of 32 mph (52
km/h) and a wind gust of 39 mph (63 km/h).
The estimated minimum central pressure is 1001 mb (29.56 inches).
HAZARDS AFFECTING LAND
RAINFALL: Alberto is expected to produce the following rain
accumulations through Tuesday:
Central Cuba...Additional 5 to 10 inches, isolated storm-totals of
The Florida panhandle into eastern Alabama and western Georgia...4
to 8 inches, isolated 12 inches.
The Florida Keys and south Florida...Additional 3 to 6 inches,
isolated storm totals of 10 inches.
Rest of the Florida peninsula...1 to 4 inches.
Rest of the southeast U.S. from Tennessee to the Carolinas...2 to 6
Rains in Cuba could produce life-threatening flash floods and
mudslides. Flooding and flash flooding are possible in the southeast
United States, including Florida.
WIND: Tropical storm conditions are occurring in the Dry Tortugas,
and these conditions are expected to spread northward in the warning
area along the west coast of Florida later today. Tropical storm
conditions are expected within the warning area along the northern
Gulf Coast by tonight. Tropical storm conditions are possible in the
watch area along the northern Gulf Coast by Monday.
STORM SURGE: The combination of 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 could reach the
following heights above ground somewhere in the indicated
areas if the peak surge occurs at the time of high tide...
Crystal River to the Mississippi/Alabama border...2 to 4 ft
The deepest water will occur along the immediate coast. 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.
TORNADOES: A few tornadoes are possible across the Florida
SURF: Swells generated by Alberto will continue to spread northward
along the eastern and northern Gulf Coast through Monday. These
swells are likely to cause life-threatening surf and rip current
conditions. For more information, consult products from your local
Next intermediate advisory at 800 AM EDT.
Next complete advisory at 1100 AM EDT.