NHC/NOAA 2PM update – Gonzalo a little weaker

BULLETIN
Tropical Storm Gonzalo Intermediate Advisory Number 8A
NWS National Hurricane Center Miami FL       AL072020
200 PM AST Thu Jul 23 2020

...GONZALO A LITTLE WEAKER...


SUMMARY OF 200 PM AST...1800 UTC...INFORMATION
----------------------------------------------
LOCATION...9.7N 48.8W
ABOUT 850 MI...1370 KM E OF THE SOUTHERN WINDWARD ISLANDS
MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 14 MPH...22 KM/H
MINIMUM CENTRAL PRESSURE...1000 MB...29.53 INCHES



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

None.

SUMMARY OF WATCHES AND WARNING IN EFFECT...

A Hurricane Watch is in effect for...
* Barbados
* St. Vincent and the Grenadines

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.

Interests in the Windward Islands should monitor the progress of
this system.  Additional watches or warnings will likely be
required for some of these islands later today.

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


DISCUSSION AND OUTLOOK
----------------------
At 200 PM AST (1800 UTC), the center of Tropical Storm Gonzalo was
located near latitude 9.7 North, longitude 48.8 West.  Gonzalo is
moving toward the west near 14 mph (22 km/h).  A westward to
west-northwestward motion with an increase in forward speed is
expected through the weekend.  On the forecast track, the center of
Gonzalo will approach the southern Windward Islands Friday night and
move across the islands Saturday and Saturday evening.

Satellite-derived wind data indicate that maximum sustained winds
have decreased to near 60 mph (95 km/h) with higher gusts.  Some
re-strengthening is possible during the next couple of days, and
there is still a chance that Gonzalo could become a hurricane.

The satellite wind data indicate that Gonzalo is an even smaller
storm than previously thought, and tropical-storm-force winds only
extend outward up to 25 miles (35 km) from the center.

The estimated minimum central pressure is 1000 mb (29.53 inches).


HAZARDS AFFECTING LAND
----------------------
Key messages for Gonzalo can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDAT2 and WMO header WTNT42 KNHC.

WIND:  Hurricane or tropical storm conditions are possible within
the watch area on Saturday.

RAINFALL:  Gonzalo is expected to produce total rain accumulations
of 2 to 5 inches, with isolated maximum amounts of 7 inches in
Barbados and the Windward Islands from Friday night through Sunday
night.  Gonzalo is also expected to produce total rain accumulations
of 1 to 2 inches in Trinidad and Tobago.  Rainfall in Barbados and
the Windward Islands could lead to life-threatening flash floods.


NEXT ADVISORY
-------------
Next complete advisory at 500 PM AST.

$$
Forecaster Berg

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