Marine Weather and Tide Forecast for Arroyo, PR
March 29, 2024 4:34 AM CST (10:34 UTC) Change Location
Sunrise 5:37 AM Sunset 5:52 PM Moonrise 9:06 PM Moonset 11:06 AM |
Area Discussion for - San Juan, PR
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FXCA62 TJSJ 290755 AFDSJU
Area Forecast Discussion National Weather Service San Juan PR 355 AM AST Fri Mar 29 2024
SYNOPSIS
The surface high pressure stretching across the southwest Atlantic, along with a distant diminishing area of low pressure northeast of the region, will maintain a north to northwest winds until at least Saturday. Also this weather scenario will limit shower activity across the local region until Saturday morning. On Saturday, a cold front now located over the Atlantic waters east of the continental U.S. and extending south to Central America will move ESE and over the local region by Saturday. This weather feature will increase the shower coverage late Saturday through Sunday morning.Improving weather conditions from Monday onwards.
SHORT TERM
Today through Sunday...
Throughout the overnight hours, predominantly fair weather conditions persisted, marked by clear skies and mainly shower free conditions. The Doppler radar only showed a few showers over the Atlantic waters north of St Thomas. This prevailing pattern is expected to persist into the afternoon, with a slight potential for isolated showers to develop over the southern and southeastern portions of Puerto Rico.
The current weather pattern will persist until Saturday, Characterized by limited shower activity and below normal temperatures. Northerly winds and mostly clear skies will dominate the region during this period. However, this weather scenario is anticipated to shift as a cold front is forecast to move across the area late Saturday and Sunday morning. While models indicate that the moisture associated to the cold front will swiftly move eastward, there is a likelihood of increase showers and a slight chance of thunderstorms. A much stable and drier airmass will move across the region therefore limiting the shower development.
LONG TERM
Monday through Thursday...
On Monday, the surface high-pressure will continue to move easterly from the western Atlantic, maintaining the northeasterly winds across Puerto Rico and the U.S. Virgin Islands. The latest model guidance shows a ridge at the mid-levels along with dry conditions from 700 to 250 mb through at least the end of the long-term period. A dry airmass is forecast to move across the islands during the period. Precipitable Water models suggest values dropping to around an inch and slightly below the two standard deviations for this time of the year. By mid-week, expect the winds to become easterly as the high-pressure system at the surface continues to move close to the area. With this, expect the return of typical weather conditions as the trade winds could bring occasional periods of showers, particularly over the windward sections of the islands. At this time, we anticipate limited to no rainfall activity over Puerto Rico and the U.S.
Virgin Islands through the end of the period. Overall, mostly calm and stable conditions will dominate the forecast areas from Monday into Thursday.
AVIATION
(06Z TAFS)
VFR conditions are expected to prevail across all TAF terminals during the next 24 hours. N-NW winds will prevail through 29/18Z .
No significant rainfall activity is expected.
MARINE
The surface high pressure stretching across the southwest Atlantic, along with a distant diminishing area of low pressure northeast of the region, will maintain light to moderate north to northwest winds until at least Saturday. Although the northern swell event that affected us for the last few days will gradually diminish by Saturday morning, hazardous marine conditions will continue through the weekend. Another north-northwesterly swell is forecast to reach our local Atlantic waters starting late Saturday afternoon, posing hazards once again. Therefore, both the general public and mariners should closely monitor the marine conditions forecast.
BEACH FORECAST
Despite the northerly swell will continue to subside, hazardous beach conditions will persist through the upcoming weekend, with another swell event expected to reach our local coast between late saturday afternoon and Sunday morning.
SJU WATCHES/WARNINGS/ADVISORIES
PR...High Rip Current Risk through this afternoon for PRZ001-002-005- 008-010.
VI...None.
AM...Small Craft Advisory until 6 PM AST this evening for AMZ711.
Area Forecast Discussion National Weather Service San Juan PR 355 AM AST Fri Mar 29 2024
SYNOPSIS
The surface high pressure stretching across the southwest Atlantic, along with a distant diminishing area of low pressure northeast of the region, will maintain a north to northwest winds until at least Saturday. Also this weather scenario will limit shower activity across the local region until Saturday morning. On Saturday, a cold front now located over the Atlantic waters east of the continental U.S. and extending south to Central America will move ESE and over the local region by Saturday. This weather feature will increase the shower coverage late Saturday through Sunday morning.Improving weather conditions from Monday onwards.
SHORT TERM
Today through Sunday...
Throughout the overnight hours, predominantly fair weather conditions persisted, marked by clear skies and mainly shower free conditions. The Doppler radar only showed a few showers over the Atlantic waters north of St Thomas. This prevailing pattern is expected to persist into the afternoon, with a slight potential for isolated showers to develop over the southern and southeastern portions of Puerto Rico.
The current weather pattern will persist until Saturday, Characterized by limited shower activity and below normal temperatures. Northerly winds and mostly clear skies will dominate the region during this period. However, this weather scenario is anticipated to shift as a cold front is forecast to move across the area late Saturday and Sunday morning. While models indicate that the moisture associated to the cold front will swiftly move eastward, there is a likelihood of increase showers and a slight chance of thunderstorms. A much stable and drier airmass will move across the region therefore limiting the shower development.
LONG TERM
Monday through Thursday...
On Monday, the surface high-pressure will continue to move easterly from the western Atlantic, maintaining the northeasterly winds across Puerto Rico and the U.S. Virgin Islands. The latest model guidance shows a ridge at the mid-levels along with dry conditions from 700 to 250 mb through at least the end of the long-term period. A dry airmass is forecast to move across the islands during the period. Precipitable Water models suggest values dropping to around an inch and slightly below the two standard deviations for this time of the year. By mid-week, expect the winds to become easterly as the high-pressure system at the surface continues to move close to the area. With this, expect the return of typical weather conditions as the trade winds could bring occasional periods of showers, particularly over the windward sections of the islands. At this time, we anticipate limited to no rainfall activity over Puerto Rico and the U.S.
Virgin Islands through the end of the period. Overall, mostly calm and stable conditions will dominate the forecast areas from Monday into Thursday.
AVIATION
(06Z TAFS)
VFR conditions are expected to prevail across all TAF terminals during the next 24 hours. N-NW winds will prevail through 29/18Z .
No significant rainfall activity is expected.
MARINE
The surface high pressure stretching across the southwest Atlantic, along with a distant diminishing area of low pressure northeast of the region, will maintain light to moderate north to northwest winds until at least Saturday. Although the northern swell event that affected us for the last few days will gradually diminish by Saturday morning, hazardous marine conditions will continue through the weekend. Another north-northwesterly swell is forecast to reach our local Atlantic waters starting late Saturday afternoon, posing hazards once again. Therefore, both the general public and mariners should closely monitor the marine conditions forecast.
BEACH FORECAST
Despite the northerly swell will continue to subside, hazardous beach conditions will persist through the upcoming weekend, with another swell event expected to reach our local coast between late saturday afternoon and Sunday morning.
SJU WATCHES/WARNINGS/ADVISORIES
PR...High Rip Current Risk through this afternoon for PRZ001-002-005- 008-010.
VI...None.
AM...Small Craft Advisory until 6 PM AST this evening for AMZ711.
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