Severe Weather and Flash Flooding Potential for the Center of the Nation

An upper level trough coinciding with surface frontal boundaries will focus showers and thunderstorms from the Great Lakes region into the Ohio and Tennessee Valley's, central and southern Plains. Instances of flash flooding, damaging winds and large hail are possible. Meanwhile, increasing waves and rip currents for portions of the eastern seaboard this week as tropical Atlantic is active. Read More >

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Last Map Update: Mon, Sep 22, 2025 at 2:04:42 pm AST

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[SEP 22] Another warm day is ahead, with weather conditions similar to yesterday. An Extreme Heat Warning and Heat Advisory are in effect from 10 AM to 4 PM for urban and coastal areas of Puerto Rico and the U.S. Virgin Islands. Afternoon showers and thunderstorms may develop, bringing a risk of flooding over the interior and western parts of Puerto Rico. In addition, Saharan dust will arrive this afternoon and persist into tonight, creating hazy skies.

[Sept 22nd] 8 AM AST Tropical Weather Outlook 🌀: The NHC is monitoring two tropical waves. The first, located east of the Leeward Islands, has a medium chance of development over the next seven days and a 10% chance of formation within the next 48 hours. This tropical wave is expected to move near the local islands by Wednesday, increasing the potential for widespread showers and thunderstorms. [22 de septiembre] 8 AM AST Perspectiva del Tiempo Tropical 🌀: El NHC está monitoreando dos ondas tropicales. La primera, ubicada al este de las Islas de Sotavento, tiene una probabilidad media de desarrollo en los próximos siete días y un 10% de probabilidad de formación en las próximas 48 horas. Se espera que esta onda tropical se mueva cerca de las islas locales para el miércoles, aumentando el potencial de aguaceros generalizados y tronadas.

[Sep 22] A moderate risk of rip currents persists along the north and east beaches of Puerto Rico. Elsewhere, the risk is low. | Persiste el riesgo moderado de corrientes marinas para el norte y este de PR. En el resto de las áreas el riesgo es bajo.