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Hurricane Humberto Intermediate Advisory Number 23A
NWS National Hurricane Center Miami FL       AL092019
800 AM AST Wed Sep 18 2019

...HUMBERTO'S EYE PASSES DIRECTLY OVER A NOAA BUOY...
...OUTER RAINBANDS BEGINNING TO AFFECT BERMUDA...


SUMMARY OF 800 AM AST...1200 UTC...INFORMATION
----------------------------------------------
LOCATION...31.8N 68.9W
ABOUT 240 MI...390 KM W OF BERMUDA
MAXIMUM SUSTAINED WINDS...115 MPH...185 KM/H
PRESENT MOVEMENT...ENE OR 65 DEGREES AT 16 MPH...26 KM/H
MINIMUM CENTRAL PRESSURE...951 MB...28.09 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 AM AST (1200 UTC), the eye of Hurricane Humberto was located
by satellite near latitude 31.8 North, longitude 68.9 West. Humberto
has increased its forward speed and is moving toward the east-
northeast near 16 mph (26 km/h). This general motion with an
additional increase in forward speed is expected through early
Thursday, followed by a northeastward to north-northeastward motion
through Friday.  On the forecast track, the core of Humberto is
expected to pass just to the northwest and north of Bermuda later
tonight.

Maximum sustained winds are 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 early Thursday.  A steady weakening trend should
begin later on Thursday.

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 eye of Hurricane Humberto passed over NOAA buoy
around 500 AM AST (0900 UTC). The buoy measured a sustained wind of
76 mph (122 km/h) and a wind gust to 90 mph (145 km/h) at 4-meters
elevation, and also reported a pressure of 954.2 mb (28.18 inches)
during the eye passage.

The estimated minimum central pressure is 951 mb (28.09 inches)
based on reports from the NOAA buoy.


HAZARDS AFFECTING LAND
----------------------
WIND:  Hurricane conditions are expected to reach Bermuda tonight
and continue into early Thursday morning.  Winds are expected to
reach tropical-storm strength later this 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
through Thursday, with rainfall accumulations of 2 to 4 inches with
maximum amounts of 6 inches expected.

SURF:  Large swells generated by Humberto will increase along the
coast of Bermuda today.  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 AM AST.

$$
Forecaster Stewart

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