Archive Historic Harvey (Tropical Depression)

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Taylor Campbell

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ABNT20 KNHC 131128
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Tropical Weather Outlook
NWS National Hurricane Center Miami FL
800 AM EDT Sun Aug 13 2017

For the North Atlantic...Caribbean Sea and the Gulf of Mexico:

The National Hurricane Center is issuing advisories on Tropical
Depression Eight, located a few hundred miles north-northeast of
the southeastern Bahamas.

A tropical wave that has emerged off the west coast of Africa
is forecast to move westward over the next couple of days and merge
with a broad area of low pressure located southwest of the Cabo
Verde Islands. Environmental conditions are expected to be conducive
for gradual development of the system while it moves westward to
west-northwestward at 10 to 15 mph over the open tropical eastern
Atlantic.
* Formation chance through 48 hours...low...near 0 percent.
* Formation chance through 5 days...low...20 percent.

&&
Public Advisories on Tropical Depression Eight are issued under WMO
header WTNT33 KNHC and under AWIPS header MIATCPAT3.
Forecast/Advisories on Tropical Depression Eight are issued under
WMO header WTNT23 KNHC and under AWIPS header MIATCMAT3.

$$
Forecaster Roberts
 

Taylor Campbell

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Satellite imagery doesn't show much more than a very broad, and disorganized area of storms. There's a lot of work to be done if we are going to see a storm soon. Also, a pretty sheared environment sits to the west so if nothing can get its act together in a big way then it'll have more troubles doing so later. So far.... everything looks, and feels like this is just another 99L. But, I see better potential in anything that comes of this to be a US threat.
 

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Tropical Weather Outlook
NWS National Hurricane Center Miami FL
800 AM EDT Wed Aug 16 2017

A low pressure system located about 900 miles east of the Lesser
Antilles continues to produce disorganized showers and a few
thunderstorms. This system is moving westward at 15 to 20 mph,
and it is expected to cross into the Caribbean Sea on Friday.
Upper-level winds are forecast to become a little more conducive
for development during the next several days, and interests in the
Lesser Antilles should monitor the progress of this system.
* Formation chance through 48 hours...low...30 percent.
* Formation chance through 5 days...medium...40 percent.
 

Brent

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#6
Harvey?



Showers and thunderstorms associated with a low pressure system
located about 650 miles east of the Lesser Antilles have become
a little more concentrated this afternoon. Upper-level winds are
forecast to become more conducive for development during the next
day or so while the low moves westward at 15 to 20 mph across the
tropical Atlantic Ocean, crossing into the Caribbean Sea on Friday.
Regardless of development, locally heavy rainfall and gusty winds
are expected to spread across portions of the Lesser Antilles on
Thursday night and Friday, and interests there and elsewhere in
the eastern Caribbean should monitor the progress of this
disturbance. An Air Force Reserve reconnaissance aircraft is
scheduled to investigate this system on Thursday, if necessary.
* Formation chance through 48 hours...medium...50 percent.
* Formation chance through 5 days...medium...60 percent.
 

Taylor Campbell

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Morning satellite imagery shows that shower activity associated
with a low pressure system centered about 550 miles east of the
Lesser Antilles has become better organized overnight, and buoy
data indicates that the circulation is becoming better defined.
Environmental conditions appear generally conducive for development,
and a tropical depression could form later today or tonight as the
system moves westward at about 15 mph. Regardless of development,
locally heavy rainfall and gusty winds are expected to spread across
portions of the Lesser Antilles and the eastern Caribbean Sea
tonight and Friday, and interests in these areas should monitor the
progress of this system. An Air Force Reserve Hurricane Hunter
aircraft is scheduled to investigate the disturbance this afternoon.
* Formation chance through 48 hours...high...80 percent.
* Formation chance through 5 days...high...90 percent.
 

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Potential Tropical Cyclone Nine Advisory Number 1
NWS National Hurricane Center Miami FL AL092017
1100 AM AST Thu Aug 17 2017

...LOW PRESSURE AREA EAST OF THE LESSER ANTILLES EXPECTED TO BECOME
A TROPICAL CYCLONE LATER TODAY OR TONIGHT...


SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...13.1N 54.1W
ABOUT 365 MI...585 KM E OF BARBADOS
ABOUT 465 MI...750 KM E OF ST. LUCIA
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 17 MPH...28 KM/H
MINIMUM CENTRAL PRESSURE...1008 MB...29.77 INCHES


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

The Government of France has issued a Tropical Storm Warning For
Martinique.

The Government of Barbados has issued a Tropical Storm Warning for
Barbados, St. Vincent, and the Grenadines.

The Government of St. Lucia has issued a Tropical Storm Warning for
St. Lucia.

The Government of Barbados has issued a Tropical Storm Watch for
Dominica.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Tropical Storm Warning is in effect for...
* Martinique
* St. Lucia
* Barbados
* St. Vincent and the Grenadines

A Tropical Storm Watch is in effect for...
* Dominica

A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case within
24-36 hours.

A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area, in this case within 24-36 hours.

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


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
At 1100 AM AST (1500 UTC), the disturbance was centered near
latitude 13.1 North, longitude 54.1 West. The system is moving
toward the west near 17 mph (28 km/h) and this motion is expected to
continue for the next couple of days. On the forecast track, the
disturbance should move through the Windward Islands and into the
eastern Caribbean Sea on Friday.

Maximum sustained winds are near 35 mph (55 km/h) with higher gusts.
The disturbance is expected to become a tropical cyclone later
today or tonight, and it could become a tropical storm before
reaching the Windward islands.

If the current trends continue, the system will likely become a
tropical cyclone later today or tonight. An Air Force Reserve
Hurricane Hunter aircraft is scheduled to investigate the
disturbance this afternoon.
* Formation chance through 48 hours...high...80 percent
* Formation chance through 5 days...high...90 percent

The estimated minimum central pressure is 1008 mb (29.77 inches).


HAZARDS AFFECTING LAND
----------------------
WIND: Tropical storm conditions are expected to first reach the
Lesser Antilles within the warning area by early Friday, making
outside preparations difficult or dangerous. Tropical storm
conditions are possible in the watch area on Friday.

RAINFALL: The disturbance is expected to produce rainfall totals of
2 to 4 inches across portions of the Windward Islands from
Martinique southward to Grenada. These rains could cause
life-threatening flash floods and mudslides.


NEXT ADVISORY
-------------
Next intermediate advisory at 200 PM AST.
Next complete advisory at 500 PM AST.

$$
Forecaster Beven

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From AF303-
Product: Air Force Tropical RECCO Message (URNT11 KNHC)
Transmitted: 17th day of the month at 18:03Z
Agency: United States Air Force
Aircraft: Lockheed WC-130J Hercules with reg. number AF97-5303
Tropical Depression: Nine (flight in the North Atlantic basin)
Mission Number: 1
Observation Number: 08

Mandatory Data...

Observation Time: 17:59Z on Thursday
Coordinates: 13.4N 55.0W
Location: 310 statute miles (499 km) to the E (86°) from Bridgetown, Barbados.
Pressure Altitude: 300 meters (984 feet)
Flight Level Wind: From 90° at 35 knots (From the E at ~ 40.2 mph)
- The above is a spot wind.
- Winds were obtained using doppler radar or inertial systems.
Flight Level Air Temperature: 24°C (75°F)
Flight Level Dew Point: Not available, probably because the dew point hygrometer was not working.
Weather (within 30 nm): Shower(s) (continuous or intermittent precipitation - from cumuliform clouds)
Turbulence: None
Conditions Along Flight Route: In and out of clouds
Radar Capability: Yes
Mean Sea Level Pressure (MSLP): 1007 mb (29.74 inHg), extrapolated

Additional Data...

Estimated Surface Wind: From 80° at 40 knots (From the E at ~ 46.0 mph)

Remarks Section...

Surface Wind Speed (likely by SFMR): 31 knots (~ 35.7 mph)
 

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Potential Tropical Cyclone Nine
Intermediate Advisory Number 1A...Corrected
NWS National Hurricane Center Miami FL AL092017
200 PM AST Thu Aug 17 2017

CORRECTED DUE TO PARTIAL RE-TRANSMISSION OF OLD ADVISORY...

...HURRICANE HUNTER AIRCRAFT ENROUTE TO INVESTIGATE THE
DISTURBANCE...


SUMMARY OF 200 PM AST...1800 UTC...INFORMATION
----------------------------------------------
LOCATION...13.1N 55.1W
ABOUT 295 MI...475 KM E OF BARBADOS
ABOUT 410 MI...660 KM E OF ST. LUCIA
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 17 MPH...28 KM/H
MINIMUM CENTRAL PRESSURE...1007 MB...29.74 INCHES


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

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Tropical Storm Warning is in effect for...
* Martinique
* St. Lucia
* Barbados
* St. Vincent and the Grenadines

A Tropical Storm Watch is in effect for...
* Dominica

A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case within
24-36 hours.

A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area, in this case within 24-36 hours.

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


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
At 200 PM AST (1800 UTC), the disturbance was centered near latitude
13.1 North, longitude 55.1 West. The system is moving toward the
west near 17 mph (28 km/h) and this motion is expected to continue
for the next couple of days. On the forecast track, the disturbance
should move through the Windward Islands and into the eastern
Caribbean Sea on Friday.

Maximum sustained winds are near 35 mph (55 km/h) with higher
gusts. The disturbance is expected to become a tropical cyclone
later today or tonight, and it could become a tropical storm before
reaching the Windward islands.

Satellite imagery indicates the disturbance is close to becoming a
tropical cyclone. An Air Force Reserve Hurricane Hunter Aircraft
is currently en route to investigate the system.
* Formation chance through 48 hours... high...near 100 percent
* Formation chance through 5 days...high...near 100 percent

The estimated minimum central pressure is 1007 mb (29.74 inches).


HAZARDS AFFECTING LAND
----------------------
WIND: Tropical storm conditions are expected to first reach the
Lesser Antilles within the warning area by early Friday, making
outside preparations difficult or dangerous. Tropical storm
conditions are possible in the watch area on Friday.

RAINFALL: The disturbance is expected to produce rainfall totals of
2 to 4 inches across portions of the Windward Islands from
Martinique southward to Grenada. These rains could cause
life-threatening flash floods and mudslides.


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

$$
Forecaster Beven

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Tropical Storm Harvey Advisory Number 2
NWS National Hurricane Center Miami FL AL092017
500 PM AST Thu Aug 17 2017

...HURRICANE HUNTER FINDS THAT THE DISTURBANCE HAS BECOME
TROPICAL STORM HARVEY...


SUMMARY OF 500 PM AST...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...13.0N 55.8W
ABOUT 250 MI...400 KM E OF BARBADOS
ABOUT 355 MI...570 KM E OF ST. LUCIA
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 18 MPH...30 KM/H
MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES


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

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Tropical Storm Warning is in effect for...
* Martinique
* St. Lucia
* Barbados
* St. Vincent and the Grenadines

A Tropical Storm Watch is in effect for...
* Dominica

A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case within
24-36 hours.

A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area, in this case within 24-36 hours.

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


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
At 500 PM AST (2100 UTC), the center of Tropical Storm Harvey was
located near latitude 13.0 North, longitude 55.8 West. Harvey is
moving toward the west near 18 mph (30 km/h), and this motion is
expected to continue for the next couple of days. On the forecast
track, Harvey should move through the Windward Islands and into the
eastern Caribbean Sea on Friday.

Reports from an Air Force Reserve Hurricane Hunter Aircraft indicate
that maximum sustained winds are near 40 mph (65 km/h) with higher
gusts. Slow strengthening is possible during the next 48 hours.

Tropical-storm-force winds extend outward up to 35 miles (55 km)
to the north of the center.

The minimum central pressure estimated from the Hurricane Hunter
data is 1004 mb (29.65 inches).


HAZARDS AFFECTING LAND
----------------------
WIND: Tropical storm conditions are expected to first reach the
Lesser Antilles within the warning area by early Friday, making
outside preparations difficult or dangerous. Tropical storm
conditions are possible in the watch area on Friday.

RAINFALL: Harvey is expected to produce rainfall totals of
2 to 4 inches across portions of the Windward Islands from
Martinique southward to Grenada. These rains could cause
life-threatening flash floods and mudslides.


NEXT ADVISORY
-------------
Next intermediate advisory at 800 PM AST.
Next complete advisory at 1100 PM AST.

$$
Forecaster Beven

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BULLETIN
Tropical Storm Harvey Intermediate Advisory Number 2A
NWS National Hurricane Center Miami FL AL092017
800 PM AST Thu Aug 17 2017

...HARVEY HEADED FOR THE WINDWARD ISLANDS...


SUMMARY OF 800 PM AST...0000 UTC...INFORMATION
----------------------------------------------
LOCATION...12.9N 56.5W
ABOUT 205 MI...325 KM E OF BARBADOS
ABOUT 310 MI...495 KM E OF ST. LUCIA
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 18 MPH...30 KM/H
MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES


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

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Tropical Storm Warning is in effect for...
* Martinique
* St. Lucia
* Barbados
* St. Vincent and the Grenadines

A Tropical Storm Watch is in effect for...
* Dominica

A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case within
24 hours.

A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area, in this case within 24 hours.

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


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
At 800 PM AST (0000 UTC), the center of Tropical Storm Harvey was
located near latitude 12.9 North, longitude 56.5 West. Harvey is
moving toward the west near 18 mph (30 km/h), and this motion is
expected to continue for the next couple of days. On the forecast
track, Harvey should move through the Windward Islands and into the
eastern Caribbean Sea on Friday.

Reports from an Air Force Reserve Hurricane Hunter Aircraft
indicate that maximum sustained winds are near 40 mph (65 km/h) with
higher gusts. Slow strengthening is possible during the next 48
hours.

Tropical-storm-force winds extend outward up to 35 miles (55 km) to
the north of the center.

The latest minimum central pressure reported by the Hurricane Hunter
aircraft is 1005 mb (29.68 inches).


HAZARDS AFFECTING LAND
----------------------
WIND: Tropical storm conditions are expected to first reach the
Lesser Antilles within the warning area by early Friday, making
outside preparations difficult or dangerous. Tropical storm
conditions are possible in the watch area on Friday.

RAINFALL: Harvey is expected to produce rainfall totals of
2 to 4 inches across portions of the Windward Islands from
Martinique southward to Grenada. These rains could cause
life-threatening flash floods and mudslides.


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

$$
Forecaster Pasch

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BULLETIN
Tropical Storm Harvey Advisory Number 3
NWS National Hurricane Center Miami FL AL092017
1100 PM AST Thu Aug 17 2017

...HARVEY NEARING THE WINDWARD ISLANDS...


SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION
-----------------------------------------------
LOCATION...13.0N 57.4W
ABOUT 140 MI...230 KM E OF BARBADOS
ABOUT 250 MI...400 KM ESE OF ST. LUCIA
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 18 MPH...30 KM/H
MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES


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

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Tropical Storm Warning is in effect for...
* Martinique
* St. Lucia
* Barbados
* St. Vincent and the Grenadines

A Tropical Storm Watch is in effect for...
* Dominica

A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case within
12 to 24 hours.

A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area, in this case within 12 to 24 hours.

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


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
At 1100 PM AST (0300 UTC), the center of Tropical Storm Harvey was
located near latitude 13.0 North, longitude 57.4 West. Harvey is
moving toward the west near 18 mph (30 km/h), and a continued
westward motion with a slight increase in forward speed is expected
over the next couple of days. On the forecast track, Harvey should
move through the Windward Islands and into the eastern Caribbean Sea
on Friday.

Maximum sustained winds are near 40 mph (65 km/h) with higher gusts.
Slow strengthening is possible during the next 48 hours.

Tropical-storm-force winds extend outward up to 60 miles (95 km)
from the center.

The estimated minimum central pressure is 1005 mb (29.68 inches).


HAZARDS AFFECTING LAND
----------------------
WIND: Tropical storm conditions are expected to first reach the
Lesser Antilles within the warning area by early Friday, making
outside preparations difficult or dangerous. Tropical storm
conditions are possible in the watch area on Friday.

RAINFALL: Harvey is expected to produce rainfall totals of
2 to 4 inches across portions of the Windward Islands from
Martinique southward to Grenada. These rains could cause
life-threatening flash floods and mudslides.


NEXT ADVISORY
-------------
Next intermediate advisory at 200 AM AST.
Next complete advisory at 500 AM AST.

$$
Forecaster Pasch

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BULLETIN
Tropical Storm Harvey Intermediate Advisory Number 3A
NWS National Hurricane Center Miami FL AL092017
200 AM AST Fri Aug 18 2017

...WEATHER DETERIORATING IN THE WINDWARD ISLANDS AS HARVEY
APPROACHES...


SUMMARY OF 200 AM AST...0600 UTC...INFORMATION
----------------------------------------------
LOCATION...13.0N 58.1W
ABOUT 95 MI...155 KM E OF BARBADOS
ABOUT 200 MI...325 KM ESE OF ST. LUCIA
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 17 MPH...28 KM/H
MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES


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

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Tropical Storm Warning is in effect for...
* Martinique
* St. Lucia
* Barbados
* St. Vincent and the Grenadines

A Tropical Storm Watch is in effect for...
* Dominica

A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case within
6 to 18 hours.

A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area, in this case within 6 to 18 hours.

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


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
At 200 AM AST (0600 UTC), the center of Tropical Storm Harvey was
located near latitude 13.0 North, longitude 58.1 West. Harvey is
moving toward the west near 17 mph (28 km/h), and a continued
westward motion with a slight increase in forward speed is expected
over the next couple of days. On the forecast track, Harvey should
move through the Windward Islands and into the eastern Caribbean Sea
later today.

Maximum sustained winds remain near 40 mph (65 km/h) with higher
gusts. Slow strengthening is possible during the next 48 hours.

Tropical-storm-force winds extend outward up to 60 miles (95 km)
mainly to the north of the center.

The estimated minimum central pressure is 1005 mb (29.68 inches).


HAZARDS AFFECTING LAND
----------------------
WIND: Tropical storm conditions are expected to first reach the
Lesser Antilles within the warning area later this morning, making
outside preparations difficult or dangerous. Tropical storm
conditions are possible in the watch area later today.

RAINFALL: Harvey is expected to produce rainfall totals of
2 to 4 inches across portions of the Windward Islands from
Martinique southward to Grenada. These rains could cause
life-threatening flash floods and mudslides.


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

$$
Forecaster Avila

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BULLETIN
Tropical Storm Harvey Advisory Number 4
NWS National Hurricane Center Miami FL AL092017
500 AM AST Fri Aug 18 2017

...HARVEY DRENCHING THE WINDWARD ISLANDS...


SUMMARY OF 500 AM AST...0900 UTC...INFORMATION
----------------------------------------------
LOCATION...13.1N 59.1W
ABOUT 30 MI...45 KM ESE OF BARBADOS
ABOUT 135 MI...220 KM ESE OF ST. LUCIA
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 18 MPH...30 KM/H
MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES


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

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Tropical Storm Warning is in effect for...
* Martinique
* St. Lucia
* Barbados
* St. Vincent and the Grenadines

A Tropical Storm Watch is in effect for...
* Dominica

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


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
At 500 AM AST (0900 UTC), the center of Tropical Storm Harvey was
located near latitude 13.1 North, longitude 59.1 West. Harvey is
moving toward the west near 18 mph (30 km/h), and a continued
westward motion with a slight increase in forward speed is expected
over the next couple of days. On the forecast track, Harvey should
move through the Windward Islands and into the eastern Caribbean Sea
later today.

Maximum sustained winds remain near 40 mph (65 km/h) with higher
gusts. Some slight strengthening is possible during the next 48
hours.

Tropical-storm-force winds extend outward up to 60 miles (95 km)
mainly to the north of the center.

The estimated minimum central pressure is 1004 mb (29.65 inches).


HAZARDS AFFECTING LAND
----------------------
WIND: Tropical storm conditions are expected to first reach the
Lesser Antilles within the warning area later this morning, making
outside preparations difficult or dangerous. Tropical storm
conditions are possible in the watch area later today.

RAINFALL: Harvey is expected to produce rainfall totals of 2 to 4
inches across portions of the Windward Islands from Martinique
southward to Grenada. These rains could cause life-threatening
flash floods and mudslides.


NEXT ADVISORY
-------------
Next intermediate advisory at 800 AM AST.
Next complete advisory at 1100 AM AST.

$$
Forecaster Avila

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BULLETIN
Tropical Storm Harvey Intermediate Advisory Number 4A
NWS National Hurricane Center Miami FL AL092017
800 AM AST Fri Aug 18 2017

...CENTER OF HARVEY BETWEEN BARBADOS AND THE WINDWARD ISLANDS...


SUMMARY OF 800 AM AST...1200 UTC...INFORMATION
----------------------------------------------
LOCATION...13.0N 60.3W
ABOUT 55 MI...90 KM W OF BARBADOS
ABOUT 60 MI...95 KM ESE OF ST. LUCIA
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 18 MPH...30 KM/H
MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES


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

The Government of Barbados has discontinued the Tropical Storm
Warning for Barbados.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Tropical Storm Warning is in effect for...
* Martinique
* St. Lucia
* St. Vincent and the Grenadines

A Tropical Storm Watch is in effect for...
* Dominica

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


DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
At 800 AM AST (1200 UTC), the center of Tropical Storm Harvey was
located near latitude 13.0 North, longitude 60.3 West. Harvey is
moving toward the west near 18 mph (30 km/h), and a continued
westward motion with a slight increase in forward speed is expected
over the next couple of days. On the forecast track, Harvey should
move through the Windward Islands and into the eastern Caribbean Sea
this morning.

Maximum sustained winds remain near 40 mph (65 km/h) with higher
gusts. Some slight strengthening is possible during the next 48
hours.

Tropical-storm-force winds extend outward up to 60 miles (95 km)
mainly to the north of the center.

The minimum central pressure estimated from Air Force Reserve
Hurricane Hunter aircraft data is 1005 mb (29.68 inches). The
Grantley Adams International Airport on Barbados recently reported a
pressure of 1006 mb (29.71 inches).


HAZARDS AFFECTING LAND
----------------------
WIND: Tropical storm conditions are spreading through the warning
area at this time, making outside preparations difficult or
dangerous. Tropical storm conditions are possible in the watch area
today.

RAINFALL: Harvey is expected to produce rainfall totals of 2 to 4
inches across portions of the Windward Islands from Martinique
southward to Grenada. These rains could cause life-threatening
flash floods and mudslides.


NEXT ADVISORY
-------------
Next complete advisory at 1100 AM AST.

$$
Forecaster Beven

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