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Marine Weather and Tides Naranjito, PR Version 3.4

NOTICE 10/9/2019 Updated the Marine Zones. 9/4/2019 Fixed the weather maps due to NOAA moving them. 7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports. 6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

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Sunrise 6:41AM

Sunset 5:48PM

Friday December 6, 2019 7:25 AM AST (11:25 UTC)

Moonrise 2:14PM

Moonset 1:48AM

Illumination 71%

NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

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7 Day Forecast for Marine Location Near Naranjito, PR

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Area Discussion for - San Juan, PR

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FXCA62 TJSJ 060815 AFDSJU

Area Forecast Discussion National Weather Service San Juan PR 415 AM AST Fri Dec 6 2019

SYNOPSIS. A gradual drying trend is expected to continue today and through the weekend as a mid to upper level ridge will strengthen and hold across the region. This in turn will increase the trade wind cap inversion and limit shower and thunderstorm development across the forecast area. However, locally and diurnally induced convection is expected to develop during the afternoons, but due to modest instability and shallow moisture showers are expected to be short- lived. Increasing east to northeast trade winds is expected over the next several days as the surface high pressure ridge will build and spread across the Atlantic north and east of the region.

SHORT TERM. Today through Sunday . A mid-level ridge is expected to hold over the area through the short-term forecast period. As a result of this feature and dry air at the mid levels, the trade wind cap will strengthen. Therefore, thunderstorm formation is not favored across the area. Winds will remain out of the east to east-northeast and, under this flow however, patches of moisture at the low levels will continue to move across the region. For each day, passing showers will move across portions of eastern Puerto Rico and the U.S. Virgin Islands during the overnight and morning hours. Then, in the afternoon, due to the available moisture, diurnal heating and local effects, showers are expected to develop across the interior and western Puerto Rico.

In terms of temperatures, a more easterly to east-northeast wind flow means that temperature will be slightly cooler over the area than what has been observed during the previous days. Normal highs for this of year are between 84 to 86 degrees.

LONG TERM. Monday through Saturday .

Recent model guidance continued to suggest a better chance for showers and isolated thunderstorms by Monday and possibly on Tuesday, as the east to northeast trade winds will increase low level moisture convergence across the forecast area. In addition, the mid to upper level ridge is forecast to slightly erode as a polar trough moves across the west Atlantic and north of the region. The breaking down of the upper ridge will weaken the trade wind cap inversion and support better chance for afternoon shower development across the islands. Most of the moisture however will be advective and brought in from old frontal remnants north of the region. Therefore no significant or widespread rainfall accumulations are anticipated over land areas at this time.

During the latter part of the period through Friday, an upper level ridge is again forecast to build over the region. At the same time the local pressure gradient will tighten and consequently winds will increase and become more northeasterly due strong surface high pressure ridge north of the region, and a weak induced surface trough forecast to develop northeast of the area over the tropical Atlantic. This will also promote more frequent morning passing showers which should affect the northern and eastern half of Puerto Rico, as well as the U.S. Virgin Islands. In addition late Friday through Saturday, weak perturbation in the prevailing trades will bring an increase in low level moisture and therefore increase the chance for shower development during the early morning and afternoon hours.

AVIATION. VFR conditions are expected across all terminals. Passing showers are expected across the area through 06/16Z. After 06/18Z, SHRA could briefly reduce visibility to MVFR across TJMZ/TJBQ. Winds will be out of the ENE at 5 to 15 knots.

MARINE. Moderate easterly winds are expected to persist through the weekend. This will create a light to moderate chop across portions of the local waters and passages through today.Another northerly swell is forecast to move across the Atlantic and Caribbean Passages late Sunday into Monday. This along with increasing east to northeast winds will create choppy and hazardous seas. In the meantime, local seas will be up to 5 feet for the next few days with easterly winds up to 15 knots. There is a low or moderate risk of rip currents across the local beaches.

PRELIMINARY POINT TEMPS/POPS. SJU 88 76 85 75 / 40 30 20 30 STT 86 76 85 74 / 20 30 30 40

SJU WATCHES/WARNINGS/ADVISORIES. PR . None. VI . None. AM . None.

SHORT TERM . ERG LONG TERM . RAM PUBLIC DESK . ERG

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
SJNP4 - 9755371 - San Juan, PR	11 mi	56 min	SSE 2.9 G 4.1	79°F	84°F		1016.2 hPa
41053 - San Juan, PR	12 mi	86 min	S 3.9 G 5.8	80°F	84°F	4 ft	1014.8 hPa (-0.5)
JOXP4 - Jobos Bay Reserve, Puerto Rico	25 mi	101 min	Calm	76°F			1017 hPa	71°F
YABP4 - 9754228 - Yabucoa Harbor, PR	25 mi	56 min		77°F				74°F
AROP4 - 9757809 - Arecibo, PR	30 mi	56 min	ESE 5.1 G 6
42085 - Southeast of Ponce, PR	36 mi	86 min	NE 7.8 G 9.7	82°F	84°F	3 ft	1014.6 hPa (-0.3)
41056	38 mi	86 min	E 12 G 14	82°F	83°F	3 ft	1014.7 hPa (+0.0)
ESPP4 - 9752695 - Esperanza, PR	40 mi	56 min	ESE 7 G 9.9	83°F	83°F		1016.4 hPa
CLBP4 - 9752235 - Culebra, PR	47 mi	62 min		80°F	85°F		1016.1 hPa

Wind History for San Juan, PR

(wind in knots)    EDIT      (on/off)   Help

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1 day ago

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NE2 G5

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
San Juan, Luis Munoz Marin International Airport, PR	13 mi	90 min	SE 3	10.00 mi	Partly Cloudy	79°F	73°F	84%	1015.9 hPa

Link to 5 minute data for TJSJ

Wind History from JSJ (wind in knots)

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Tide / Current Tables for San Juan, Puerto Rico (3)

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Tide / Current Tables for San Juan, Puerto Rico (2) (expired 1998-12-31)

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Weather Map

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GEOS Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East

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Wind Forecast for (6,6,7,8)

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Ground Weather Radar Station Puerto Rico,Virgin Islands

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