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Hurricane Humberto Intermediate Advisory Number 21A
NWS National Hurricane Center Miami FL       AL092019
800 PM EDT Tue Sep 17 2019

...HUMBERTO BECOMES A MAJOR HURRICANE...


SUMMARY OF 800 PM EDT...0000 UTC...INFORMATION
----------------------------------------------
LOCATION...31.2N 71.6W
ABOUT 405 MI...655 KM WSW OF BERMUDA
MAXIMUM SUSTAINED WINDS...115 MPH...185 KM/H
PRESENT MOVEMENT...ENE OR 75 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...951 MB...28.08 INCHES


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

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Hurricane Warning is in effect for...
* Bermuda

For storm information specific to your area, please monitor
products issued by your national meteorological service.


DISCUSSION AND OUTLOOK
----------------------
At 800 PM EDT (0000 UTC), the eye of Hurricane Humberto was located
by an Air Force Hurricane Hunter aircraft near latitude 31.2 North,
longitude 71.6 West.  Humberto is moving toward the east-northeast
near 12 mph (19 km/h), and this general motion with a gradual
increase in forward speed is expected through early Thursday,
followed by a northeastward motion through Friday.  On the forecast
track, the center of Humberto is expected to pass just to the
northwest and north of Bermuda Wednesday night.

Maximum sustained winds have increased to near 115 mph (185 km/h)
with higher gusts.  Humberto is a category 3 hurricane on the
Saffir-Simpson Hurricane Wind Scale.  Some fluctuations in intensity
are likely during the next day or so, but Humberto should remain a
powerful hurricane through Thursday.

Humberto is a large hurricane.  Hurricane-force winds extend outward
up to 60 miles (95 km) from the center and tropical-storm-force
winds extend outward up to 175 miles (280 km).

The minimum central pressure reported by the Hurricane Hunter
aircraft is 951 mb (28.08 inches).


HAZARDS AFFECTING LAND
----------------------
WIND:  Hurricane conditions are expected to reach Bermuda by
Wednesday night and continue into early Thursday morning.  Winds
are expected to first reach tropical-storm strength by Wednesday
afternoon, making outside preparations difficult or dangerous.
Preparations to protect life and property should be rushed to
completion.

RAINFALL:  Humberto may bring periods of heavy rain to Bermuda
beginning Wednesday, with rainfall accumulations of 2 to 4 inches
and isolated maximum amounts near 6 inches expected.

SURF:  Large swells generated by Humberto will increase along the
coast of Bermuda by Wednesday.  Dangerous breaking waves, especially
along south-facing beaches, will be possible Wednesday night into
Thursday, and could cause coastal flooding.

Swells will continue to affect the northwestern Bahamas and the
southeastern coast of the United States from east-central Florida to
North Carolina during the next couple of days.

These swells could cause life-threatening surf and rip current
conditions.  Please consult products from your local weather office
and the Bermuda Weather Service.

STORM SURGE:  Storm surge and breaking waves could raise water
levels by 1 to 3 feet above normal tide levels along the immediate
southern coast of Bermuda.


NEXT ADVISORY
-------------
Next complete advisory at 1100 PM EDT.

$$
Forecaster Pasch

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