Atlantic Hurricane Season 2020 Storm Names
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Hurricane Season runs from June 1-November 30
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Weather Summary for Puerto Rico
095 FXCA62 TJSJ 230707 AFDSJU Area Forecast Discussion National Weather Service San Juan PR 307 AM AST Mon Feb 23 2026 ...New SHORT TERM, LONG TERM, AVIATION, MARINE, BEACH FORECAST... .KEY MESSAGES... Issued at 244 AM AST Mon Feb 23 2026 * Southeast winds will promote warmer-than-normal temperatures today. * Rain chances will increase on Tuesday and Wednesday, along with a limited to elevated flood threat. * A long period northwesterly swell will bring hazardous seas, life-threatening rip currents and high surf conditions from Wednesday through Friday. * Across the USVI, southerly winds and high temperatures between the mid-to upper-80s are expected. Showers will increase from late tonight into Tuesday. && .Short Term(Today through Wednesday)... Issued at 244 AM AST Mon Feb 23 2026 For today, expect generally fair and stable weather conditions across Puerto Rico and the U.S. Virgin Islands as a low-to mid- level ridge extends from the Central Atlantic. The region will experience a near-normal to drier-than-normal airmass, with precipitable water values peaking just around 1.25 inches or lower. Consequently, shower activity will be highly limited once again, consisting mostly of a few passing morning showers across the USVI and eastern PR, and minimal, afternoon showers developing over northwestern PR. Surface winds will prevail from the southeast, gradually shifting more from the east to east-northeast from late Tuesday into Wednesday. Therefore, expect warmer-than- normal temperatures today, with forecast highs in the upper 80s to low 90s across the lower elevations of the islands. A significant shift in the weather pattern is expected starting Tuesday as a col area and pre-frontal trough develop over the region. A sharp surge in moisture is expected, driving precipitable water values well above normal seasonal levels to around 1.75 inches. An upper-level trough associated with the frontal system will lower 500 mb temperatures to around -8.5C, increasing instability and supporting increased cloudiness, higher rain chances, and the potential for isolated thunderstorms across portions of the local waters and central PR, where the flood threat will be elevated. Across the USVI, heavy downpours cannot be ruled out at times, and a limited flood threat is expected there. Similar unsettled conditions will carry over into Wednesday, as global model guidance indicates that, despite a brief early-day dip in precipitable water to around 1.40 inches, moisture levels will quickly rebound once again to near 1.75 inches by midday. With 500mb temperatures remaining relatively cool at around -8C and mid-level relative humidity peaking again, reaching near 60% in the 700-500mb layer and up to 80% in the 850-700mb layer, the potential for lingering showers and an elevated threat for urban and small stream flooding will persist through the middle of the week, and mainly across PR, as drier conditions are expected across the USVI. && .Long Term(Thursday through Monday)... Issued at 244 AM AST Mon Feb 23 2026 A transition from wet, unstable conditions to a drier and more stable weather pattern is expected during the first half of the long- term period. However, lingering moisture associated with the remnants of a frontal boundary will continue to reach the islands, promoting shower activity across the region through at least Friday. During this time, precipitable water (PWAT) values will remain above normal, reaching approximately 1.50 inches. As the week progresses, a surface high pressure system over the central Atlantic will strengthen and become the dominant feature. This strengthening will tighten the pressure gradient, resulting in moderate to locally fresh east-to-southeasterly winds from Thursday night through Monday. Under this regime, the trade winds will carry quick-moving showers across the region, though rainfall accumulations are expected to be minimal. By the second half of the period, a mid-to-upper-level ridge will establish itself across the northeastern Caribbean, promoting dry and stable conditions aloft. From Saturday onward, PWAT values will drop below the climatological normal to around 0.80 inches, supporting a relatively dry pattern into early next week. Temperatures at the 925 mb level will remain near normal to slightly above climatological values each day due to the combination of available moisture and southeasterly wind flow. Highs are forecast to reach the mid-to-upper 80s in lower elevations and the upper 70s to low 80s across the higher elevations through the period. && .AVIATION... (06Z TAFS) Issued at 244 AM AST Mon Feb 23 2026 Mainly VFR conditions are expected to prevail across all terminals during the next 24 hours. Mostly VCSH expected across the area terminals throughout the day. Southeast winds are expected to increase between 10 and 15 kt with stronger gusts after 23/13z. At TJBQ, a northerly sea breeze variation is expected from 23/16-22z, as well as possible tempo MVFR conds due to -SHRA. && .MARINE... Issued at 244 AM AST Mon Feb 23 2026 Marine conditions will remain in the good side due to the influence of a surface high pressure system over the central Atlantic. This main feature will maintain moderate southeasterly winds for the morning hours; however, a pre-frontal trough approaching the islands tonight into Tuesday will gradually veer surface winds from the south. As a result variable winds will be present on Tuesday into Wednesday, under the influence of a frontal boundary. Additionally, as the frontal boundary shifts to the northwest, increased moisture will increase shower activity and the potential for isolated thunderstorms. Deteriorating marine conditions are forecast from late Tuesday into Wednesday as a long-period northwesterly swell is expected to spread into the local Atlantic waters. This energy will result in deteriorating marine conditions and building seas up to 8 feet through the end of the week. Small craft advisories are expected during this period. && .BEACH FORECAST... Issued at 244 AM AST Mon Feb 23 2026 For today and into early Tuesday, there will be a moderate risk of rip currents across the northern, exposed local beaches of Puerto Rico and St. Thomas. For the rest of the local exposed coastal areas, including Vieques, the risk will remain low. A north- northwesterly long-period swell will reach the local islands, resulting in deteriorated coastal conditions from Wednesday into Friday. Expect life-threatening rip currents, and high surf conditions across all north-exposed beaches of Puerto Rico, the western coast, Culebra, and St. Thomas. Therefore, during this period, beachgoers and inexperienced surfers are urged to stay out of the water, continue monitoring forecast updates, and follow all local advisories, warnings, and lifeguard and official guidance. For more specific location information, visit: weather.gov/beach/sju. && .SJU WATCHES/WARNINGS/ADVISORIES... PR...None. VI...None. AM...None. && $$ SHORT TERM...DSR LONG TERM....LIS AVIATION...DSR BEACH/MARINE...GRS |
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