Archive Historic Harvey (Tropical Depression)

Discussion in 'Tropical Weather' started by Taylor Campbell, Aug 13, 2017.

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  1. Taylor Campbell

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  2. Taylor Campbell

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    [​IMG]
     
  3. JayF

    JayF Technical Administrator
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    I love this imagery. Dry air to the north of the invest.
     

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  4. 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.
     
  5. JayF

    JayF Technical Administrator
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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.
     
  6. Brent

    Brent Moderator
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    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.
     
  7. Taylor Campbell

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    I think this one is going to do well. Upper level low is moving west, and shear is subsiding in its wake.

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]
     
  8. Brent

    Brent Moderator
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    Maybe something similar to Franklin?
     
  9. Taylor Campbell

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    Yeah, looks like this one is staying south.
     
  10. Taylor Campbell

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    WTNT34 KNHC 171439
    TCPAT4

    BULLETIN
    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

    Continue reading...
     
  12. Brent

    Brent Moderator
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    recon obs already support Harvey as long as there's a center
     
  13. WesL

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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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    WTNT34 KNHC 171813 CCB
    TCPAT4

    BULLETIN
    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

    Continue reading...
     
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    WTNT34 KNHC 172047
    TCPAT4

    BULLETIN
    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

    Continue reading...
     
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    WTNT34 KNHC 172350
    TCPAT4

    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

    Continue reading...
     
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    WTNT34 KNHC 180230
    TCPAT4

    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

    Continue reading...
     
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    WTNT34 KNHC 180537
    TCPAT4

    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

    Continue reading...
     
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    WTNT34 KNHC 180841
    TCPAT4

    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

    Continue reading...
     
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    WTNT34 KNHC 181152
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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

    Continue reading...
     
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