Hurricane Michael Advisory Number 8
NWS National Hurricane Center Miami FL AL142018
1100 AM EDT Mon Oct 08 2018
…MICHAEL BECOMES A HURRICANE AND CONTINUED STRENGTHENING
…HEAVY RAINFALL AND STRONG WINDS SPREADING ACROSS WESTERN CUBA…
…RISK OF LIFE-THREATENING STORM SURGE…HEAVY RAINFALL…AND
DANGEROUS WINDS INCREASING FOR THE NORTHEASTERN GULF COAST…
SUMMARY OF 1100 AM EDT…1500 UTC…INFORMATION
ABOUT 50 MI…80 KM S OF THE WESTERN TIP OF CUBA
ABOUT 140 MI…220 KM ENE OF COZUMEL MEXICO
MAXIMUM SUSTAINED WINDS…75 MPH…120 KM/H
PRESENT MOVEMENT…N OR 10 DEGREES AT 7 MPH…11 KM/H
MINIMUM CENTRAL PRESSURE…982 MB…29.00 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY:
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Hurricane Warning is in effect for…
* The Cuban province of Pinar del Rio
A Tropical Storm Warning is in effect for…
* The Cuban province of the Isle of Youth
* The coast of Mexico from Tulum to Cabo Catoche, including Cozumel
A Storm Surge Watch is in effect for…
* Navarre Florida to Anna Maria Island Florida, including Tampa Bay
A Hurricane Watch is in effect for…
* Alabama-Florida border to Suwannee River Florida
A Tropical Storm Watch is in effect for…
* Suwannee River to Anna Maria Island Florida, including Tampa Bay
* Alabama-Florida border to the Mississippi-Alabama border
A Hurricane Warning means that hurricane conditions are expected
somewhere within the warning area.
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning.
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
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
A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area, generally within 48 hours.
Interests elsewhere across the southeastern United States should
monitor the progress of Michael.
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 1100 AM EDT (1500 UTC), the center of Hurricane Michael was
located near latitude 21.2 North, longitude 84.9 West. Michael is
moving toward the north near 7 mph (11 km/h). A northward motion at
a slightly faster forward speed is expected through Tuesday night,
followed by a northeastward motion on Wednesday and Thursday. On the
forecast track, the center of Michael will move northward near the
western tip of Cuba this afternoon and into the southeastern Gulf of
Mexico by tonight. Michael will move across the eastern Gulf of
Mexico Tuesday and Tuesday night, and is expected to move inland
over the Florida Panhandle or Florida Big Bend area on Wednesday,
and then move northeastward across the southeastern United States
Wednesday night and Thursday.
Data from an Air Force Reserve Hurricane Hunter aircraft indicate
that maximum sustained winds have increased to near 75 mph (120
km/h) with higher gusts. Steady to rapid strengthening is forecast
during the next day or so, and Michael is forecast to become a major
hurricane by Tuesday or Tuesday night.
Hurricane-force winds extend outward up to 30 miles (45 km) from the
center and tropical-storm-force winds extend outward up to 175 miles
The estimated minimum central pressure based on Air Force Reserve
reconnaissance data is 982 mb (29.00 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…
Indian Pass to Crystal River…8-12 ft
Okaloosa/Walton County Line to Indian Pass…5-8 ft
Crystal River to Anclote River…4-6 ft
Anclote River to Anna Maria Island including Tampa Bay…2-4 ft
Navarre to Okaloosa/Walton County Line…2-4 ft
WIND: Hurricane conditions will spread across the far western part
of the Cuban province of Pinar del Rio this afternoon and evening.
Tropical storm conditions are expected across the remainder of the
warning areas in Cuba and the Yucatan Peninsula later today.
Hurricane conditions are possible within the hurricane watch area
along the U.S. Gulf Coast by Wednesday, with tropical storm
conditions possible by Tuesday night or early Wednesday. Tropical
storm conditions are possible within the tropical storm watch area
by Tuesday night or early Wednesday.
RAINFALL: Michael is expected to produce the following rainfall
amounts through the weekend…
Western Cuba…4 to 8 inches, with isolated maximum amounts of 12
inches. This rainfall could lead to life-threatening flash floods
Florida Panhandle and Big Bend into the Carolinas…4 to 8
inches, with isolated maximum amounts of 12 inches. This rainfall
could lead to life threatening flash floods.
Florida Peninsula, Florida Keys, portions of the Mid-Atlantic
States, and the southern New England coast…2 to 4 inches with
local amounts of 6 inches. This rainfall could lead to life-
threatening flash floods.
Yucatan Peninsula…1 to 2 inches.
SURF: Swells generated by Michael are affecting the south coast of
Cuba and the east coast of the Yucatan Peninsula. Swells are
expected to begin affecting the coast of the eastern and northern
Gulf of Mexico during the next day or so. These swells are likely
to cause life-threatening surf and rip current conditions. Please
consult products from your local weather office.
Next intermediate advisory at 200 PM EDT.
Next complete advisory at 500 PM EDT.