Marine Weather and Tide Forecast for Cataņo, PR
May 10, 2024 1:55 AM AST (05:55 UTC) Change Location
 | Sunrise 5:51 AM Sunset 6:50 PM Moonrise 7:50 AM Moonset 9:44 PM |
AMZ712 Coastal Waters Of Northern Puerto Rico Out 10 Nm- 913 Pm Ast Thu May 9 2024
Rest of tonight - East winds 5 to 10 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave detail: northeast 5 feet at 12 seconds and northeast 3 feet at 5 seconds. Numerous showers late this evening and early morning, then scattered showers late.
Friday - East winds 5 to 10 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave detail: northeast 4 feet at 11 seconds and northeast 2 feet at 5 seconds. Scattered showers.
Friday night - East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave detail: northeast 4 feet at 11 seconds and east 2 feet at 6 seconds. Scattered showers.
Saturday - Southeast winds around 5 knots, becoming east in the afternoon. Seas 2 to 3 feet, occasionally to 4 feet. Wave detail: northeast 3 feet at 11 seconds and east 2 feet at 7 seconds. Scattered showers in the morning, then numerous showers in the afternoon.
Saturday night - Southeast winds around 5 knots. Seas around 2 feet. Wave detail: east 2 feet at 7 seconds and northeast 2 feet at 11 seconds. Scattered showers.
Sunday - East winds around 5 knots. Seas around 2 feet. Wave detail: northeast 2 feet at 11 seconds and east 1 foot at 7 seconds. Numerous showers, mainly in the morning.
Sunday night - Southeast winds around 5 knots. Seas 1 foot or less. Scattered showers.
Monday - East winds around 5 knots, increasing to 5 to 10 knots in the afternoon. Seas 1 foot or less. Scattered showers in the morning.
Monday night - East winds 5 to 10 knots. Seas around 2 feet. Scattered showers.
Tuesday - East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas around 2 feet.
Tuesday night - East winds 10 to 15 knots. Seas 2 to 3 feet, occasionally to 4 feet.
AMZ700 913 Pm Ast Thu May 9 2024
Synopsis for puerto rico and the uS. Virgin islands waters - . A surface high-pressure across the atlantic will yield light to moderate easterly winds through tomorrow, becoming more east to southeast during the weekend. Pulses of northeasterly swell will continue to spread across the atlantic waters and caribbean passages for the next few days. Weather conditions across the local waters are expected to gradually improve towards the weekend.
FXCA62 TJSJ 092143 AFDSJU
Area Forecast Discussion National Weather Service San Juan PR 543 PM AST Thu May 9 2024
SYNOPSIS
Elevated Rainfall Risk continues this afternoon across the islands due to convection enhanced by unstable conditions and saturated soils. Yesterday's flooding event continues to affect areas near Rio Guanajibo and Rio Culebrinas, where Flood Warnings are in effect. Weather conditions are expected to improve in the coming days as the upper-level trough moves away and the amount of precipitable water decreases to more typical levels. However, conditions will remain marginally conducive to deep convective development and susceptible diurnal heating influence. Winds are forecast to become more southerly into the weekend, this can a promote limited to locally elevated heat risk during the weekend.
SHORT TERM
Tonight through Saturday...
During the morning period, doppler radar indicated showers and isolated thunderstorms affecting the local waters and eastern Puerto Rico, where approximately 1 to 2 inches of rain fell.
Flood Advisories were issued for municipalities of that area.
Around noon, convection started to develop across the Cordillera Central and have been spreading across the island. Rainfall totals based on radar estimates have ranged between 2 and 4 inches.
Several Flash Flood Warnings and Flood Advisories were issued. The Flood Warnings for area rivers (Rio Culebrinas and Rio Guanajibo)
continue in effect through atr least tonight and will be extended if necessary.
For tonight, activity should gradually diminish, but according to the latest model guidance, additional shower activity will likely develop and concentrate across the local waters, north central and eastern Puerto Rico, Vieques, Culebra, and the U.S. Virgin Islands.
The forecast remains on track. Based on the latest models, the upper-level trough should move away from us and the amount of moisture across the region decreases to more typical levels based on climatology (around 1.8 to 2.0 inches). For that reason, weather conditions are expected to improve in the coming days, however conditions will remain marginally conducive to deep convective development due to local effects. Although widespread rains are no longer expected, scattered to locally numerous showers and isolated thunderstorms are likely during afternoons.
By Saturday, the high pressure across the Atlantic will change our surface wind flow. Low-level winds are expected to veer from easterly to south/southeasterly. Under this pattern, a warming trend will be likely with temperatures in the upper 80s to mid 90 across coastal and urban areas. Heat indices between 100-107 Fahrenheit or even higher are possible in localized areas during the weekend, especially during the daily maximum heating, across the USVI and PR's urban and coastal areas. In summary, more stable conditions are anticipated by the weekend, but typical afternoon convection are still posible. Warmer temperatures and heat indices are very likely.
/LONG TERM
Sunday through Thursday
PREV DISCUSSION
/issued 518 AM AST Thu May 9 2024/
Model guidance continues to suggest a mid- to upper-level ridge building over the region to start the long term forecast period.
This feature could potentially promote more typical weather.
Precipitable water (PWAT) values are forecast to generally stay at normal values, 1.5 to 2.0 inches, through the period as patches of moisture continue to advect into the region. Sunday appears to be the wettest day, with high end normal values to possibly above normal values under southerly steering flow. With veering flow backing to become more easterly by Monday afternoon, PWAT values should remain at normal values through the rest of the period. Some exceptions could be during afternoon convection, were PWAT can increase, and on Wednesday morning, when model guidance suggests a patch of drier air reaching the islands. Most available moisture will reach up to 700 mb on Sunday morning before gradually decreasing and only reaching up to 850 mb by Wednesday. The NASA aerosol optical thickness (AOT) guidance continues to suggests the presence of an air mass with Saharan dust particles to start the period, which may extend into next week. Diurnal heating, local effects and sea breeze variations will continue to promote up to strong afternoon convection, steered by southerly winds on Sunday and by more easterly winds for the rest of the period, promoting convective activity mainly over sectors of the interior to western half of the Puerto Rico and downwind of the local islands. Above- normal sea surface temperatures can also promote nighttime showers across windward sectors of the islands. The Galvez-Davidson Index (GDI) suggest that Sunday will be the day with stronger afternoon convective activity. Limited Heat Risk (heat indices from 102 to 107 degrees Fahrenheit) or even higher, especially during the daily maximum heating, will persists across several lower elevation sectors of the islands where no significant rain is observed.
AVIATION
(18Z TAFS)
SHRA/TSRA will continue to affect the area, causing mountain obscuration across the Cordillera Central gradually moving towards the coast resulting in VCSH mainly across TJSJ and TJPS.
Generally VFR conditions expected the rest of the overnight period. Light and variable low-level winds, increasing to 10-15 knots and influenced by sea breeze variations between 09/14-22Z.
Then, light and variable winds will return later tonight.
MARINE
A surface high-pressure across the Atlantic will yield light to moderate easterly winds through tomorrow, becoming more east to southeast during the weekend. Pulses of northeasterly swell will continue to spread across the Atlantic waters and Caribbean Passages for the next few days. Weather conditions across the local waters are expected to gradually improve towards the weekend.
BEACH FORECAST
There is a High Risk of Rip Currents tonight and Friday for the northern coastline of Puerto Rico, from Aguadilla to Fajardo, and a Moderate Risk for Culebra, northern and western St. Thomas and eastern St. Croix. There is a low risk elsewhere. The risk of rip currents are forecast to gradually diminish and an overall low risk of rip currents is forecast next weekend.
HYDROLOGY
There is a significant flood risk across the local islands due to saturated soils and river running well above normal values.
The Flood Warnings for area rivers (Rio Culebrinas and Rio Guanajibo) continue in effect through atr least tonight and will be extended if necessary.
SJU WATCHES/WARNINGS/ADVISORIES
PR...High Rip Current Risk through Friday afternoon for PRZ001-002- 005-008.
VI...None.
AM...None.
Area Forecast Discussion National Weather Service San Juan PR 543 PM AST Thu May 9 2024
SYNOPSIS
Elevated Rainfall Risk continues this afternoon across the islands due to convection enhanced by unstable conditions and saturated soils. Yesterday's flooding event continues to affect areas near Rio Guanajibo and Rio Culebrinas, where Flood Warnings are in effect. Weather conditions are expected to improve in the coming days as the upper-level trough moves away and the amount of precipitable water decreases to more typical levels. However, conditions will remain marginally conducive to deep convective development and susceptible diurnal heating influence. Winds are forecast to become more southerly into the weekend, this can a promote limited to locally elevated heat risk during the weekend.
SHORT TERM
Tonight through Saturday...
During the morning period, doppler radar indicated showers and isolated thunderstorms affecting the local waters and eastern Puerto Rico, where approximately 1 to 2 inches of rain fell.
Flood Advisories were issued for municipalities of that area.
Around noon, convection started to develop across the Cordillera Central and have been spreading across the island. Rainfall totals based on radar estimates have ranged between 2 and 4 inches.
Several Flash Flood Warnings and Flood Advisories were issued. The Flood Warnings for area rivers (Rio Culebrinas and Rio Guanajibo)
continue in effect through atr least tonight and will be extended if necessary.
For tonight, activity should gradually diminish, but according to the latest model guidance, additional shower activity will likely develop and concentrate across the local waters, north central and eastern Puerto Rico, Vieques, Culebra, and the U.S. Virgin Islands.
The forecast remains on track. Based on the latest models, the upper-level trough should move away from us and the amount of moisture across the region decreases to more typical levels based on climatology (around 1.8 to 2.0 inches). For that reason, weather conditions are expected to improve in the coming days, however conditions will remain marginally conducive to deep convective development due to local effects. Although widespread rains are no longer expected, scattered to locally numerous showers and isolated thunderstorms are likely during afternoons.
By Saturday, the high pressure across the Atlantic will change our surface wind flow. Low-level winds are expected to veer from easterly to south/southeasterly. Under this pattern, a warming trend will be likely with temperatures in the upper 80s to mid 90 across coastal and urban areas. Heat indices between 100-107 Fahrenheit or even higher are possible in localized areas during the weekend, especially during the daily maximum heating, across the USVI and PR's urban and coastal areas. In summary, more stable conditions are anticipated by the weekend, but typical afternoon convection are still posible. Warmer temperatures and heat indices are very likely.
/LONG TERM
Sunday through Thursday
PREV DISCUSSION
/issued 518 AM AST Thu May 9 2024/
Model guidance continues to suggest a mid- to upper-level ridge building over the region to start the long term forecast period.
This feature could potentially promote more typical weather.
Precipitable water (PWAT) values are forecast to generally stay at normal values, 1.5 to 2.0 inches, through the period as patches of moisture continue to advect into the region. Sunday appears to be the wettest day, with high end normal values to possibly above normal values under southerly steering flow. With veering flow backing to become more easterly by Monday afternoon, PWAT values should remain at normal values through the rest of the period. Some exceptions could be during afternoon convection, were PWAT can increase, and on Wednesday morning, when model guidance suggests a patch of drier air reaching the islands. Most available moisture will reach up to 700 mb on Sunday morning before gradually decreasing and only reaching up to 850 mb by Wednesday. The NASA aerosol optical thickness (AOT) guidance continues to suggests the presence of an air mass with Saharan dust particles to start the period, which may extend into next week. Diurnal heating, local effects and sea breeze variations will continue to promote up to strong afternoon convection, steered by southerly winds on Sunday and by more easterly winds for the rest of the period, promoting convective activity mainly over sectors of the interior to western half of the Puerto Rico and downwind of the local islands. Above- normal sea surface temperatures can also promote nighttime showers across windward sectors of the islands. The Galvez-Davidson Index (GDI) suggest that Sunday will be the day with stronger afternoon convective activity. Limited Heat Risk (heat indices from 102 to 107 degrees Fahrenheit) or even higher, especially during the daily maximum heating, will persists across several lower elevation sectors of the islands where no significant rain is observed.
AVIATION
(18Z TAFS)
SHRA/TSRA will continue to affect the area, causing mountain obscuration across the Cordillera Central gradually moving towards the coast resulting in VCSH mainly across TJSJ and TJPS.
Generally VFR conditions expected the rest of the overnight period. Light and variable low-level winds, increasing to 10-15 knots and influenced by sea breeze variations between 09/14-22Z.
Then, light and variable winds will return later tonight.
MARINE
A surface high-pressure across the Atlantic will yield light to moderate easterly winds through tomorrow, becoming more east to southeast during the weekend. Pulses of northeasterly swell will continue to spread across the Atlantic waters and Caribbean Passages for the next few days. Weather conditions across the local waters are expected to gradually improve towards the weekend.
BEACH FORECAST
There is a High Risk of Rip Currents tonight and Friday for the northern coastline of Puerto Rico, from Aguadilla to Fajardo, and a Moderate Risk for Culebra, northern and western St. Thomas and eastern St. Croix. There is a low risk elsewhere. The risk of rip currents are forecast to gradually diminish and an overall low risk of rip currents is forecast next weekend.
HYDROLOGY
There is a significant flood risk across the local islands due to saturated soils and river running well above normal values.
The Flood Warnings for area rivers (Rio Culebrinas and Rio Guanajibo) continue in effect through atr least tonight and will be extended if necessary.
SJU WATCHES/WARNINGS/ADVISORIES
PR...High Rip Current Risk through Friday afternoon for PRZ001-002- 005-008.
VI...None.
AM...None.
| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | inHg | DewPt |
| SJNP4 - 9755371 - San Juan, PR | 0 mi | 56 min | 80°F | 83°F | 29.96 | |||
| 41053 - San Juan, PR | 1 mi | 56 min | ESE 7.8G | 83°F | 4 ft | 29.92 | ||
| 41056 | 37 mi | 56 min | ENE 9.7G | 82°F | 84°F | 4 ft | 29.91 | |
| ESPP4 - 9752695 - Esperanza, PR | 42 mi | 56 min | N 1.9G | 78°F | 84°F | 29.93 | ||
| CLBP4 - 9752235 - Culebra, PR | 45 mi | 56 min | 81°F | 84°F | 29.94 | |||
| 42085 - Southeast of Ponce, PR | 46 mi | 56 min | NNE 5.8G | 82°F | 85°F | 2 ft | 29.91 |
toggle option: (graph/table)
No data
| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
| TJSJ LUIS MUNOZ MARIN INTL,PR | 6 sm | 59 min | calm | 10 sm | A Few Clouds | 81°F | 75°F | 84% | 29.95 |
San Juan
Click for Map
Thu -- 04:40 AM AST 0.21 feet Low Tide
Thu -- 05:52 AM AST Sunrise
Thu -- 06:54 AM AST Moonrise
Thu -- 09:18 AM AST 0.75 feet High Tide
Thu -- 03:21 PM AST -0.40 feet Low Tide
Thu -- 06:48 PM AST Sunset
Thu -- 08:41 PM AST Moonset
Thu -- 10:43 PM AST 1.86 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Thu -- 04:40 AM AST 0.21 feet Low Tide
Thu -- 05:52 AM AST Sunrise
Thu -- 06:54 AM AST Moonrise
Thu -- 09:18 AM AST 0.75 feet High Tide
Thu -- 03:21 PM AST -0.40 feet Low Tide
Thu -- 06:48 PM AST Sunset
Thu -- 08:41 PM AST Moonset
Thu -- 10:43 PM AST 1.86 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
San Juan, Puerto Rico, Tide feet
| 12 am |
| 1.5 |
| 1 am |
| 1.1 |
| 2 am |
| 0.7 |
| 3 am |
| 0.4 |
| 4 am |
| 0.2 |
| 5 am |
| 0.2 |
| 6 am |
| 0.3 |
| 7 am |
| 0.5 |
| 8 am |
| 0.7 |
| 9 am |
| 0.7 |
| 10 am |
| 0.7 |
| 11 am |
| 0.6 |
| 12 pm |
| 0.3 |
| 1 pm |
| 0 |
| 2 pm |
| -0.2 |
| 3 pm |
| -0.4 |
| 4 pm |
| -0.4 |
| 5 pm |
| -0.1 |
| 6 pm |
| 0.2 |
| 7 pm |
| 0.7 |
| 8 pm |
| 1.2 |
| 9 pm |
| 1.6 |
| 10 pm |
| 1.8 |
| 11 pm |
| 1.8 |
Boca De Cangrejos
Click for Map
Thu -- 04:52 AM AST 0.44 feet Low Tide
Thu -- 05:52 AM AST Sunrise
Thu -- 06:54 AM AST Moonrise
Thu -- 09:15 AM AST 0.83 feet High Tide
Thu -- 03:38 PM AST -0.31 feet Low Tide
Thu -- 06:48 PM AST Sunset
Thu -- 08:41 PM AST Moonset
Thu -- 11:05 PM AST 1.71 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Thu -- 04:52 AM AST 0.44 feet Low Tide
Thu -- 05:52 AM AST Sunrise
Thu -- 06:54 AM AST Moonrise
Thu -- 09:15 AM AST 0.83 feet High Tide
Thu -- 03:38 PM AST -0.31 feet Low Tide
Thu -- 06:48 PM AST Sunset
Thu -- 08:41 PM AST Moonset
Thu -- 11:05 PM AST 1.71 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Boca De Cangrejos, Isla Verde, San Juan, Puerto Rico, Tide feet
| 12 am |
| 1.5 |
| 1 am |
| 1.2 |
| 2 am |
| 0.9 |
| 3 am |
| 0.7 |
| 4 am |
| 0.5 |
| 5 am |
| 0.4 |
| 6 am |
| 0.5 |
| 7 am |
| 0.6 |
| 8 am |
| 0.8 |
| 9 am |
| 0.8 |
| 10 am |
| 0.8 |
| 11 am |
| 0.7 |
| 12 pm |
| 0.4 |
| 1 pm |
| 0.1 |
| 2 pm |
| -0.1 |
| 3 pm |
| -0.3 |
| 4 pm |
| -0.3 |
| 5 pm |
| -0.2 |
| 6 pm |
| 0.1 |
| 7 pm |
| 0.5 |
| 8 pm |
| 1 |
| 9 pm |
| 1.4 |
| 10 pm |
| 1.6 |
| 11 pm |
| 1.7 |
Virgin,Islands/San,Juan/Cayey,PR
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