Catano Municipality, PR

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From the Forecaster

Wetter Weather Returns

[JUL 27, 2026] ⛈️ Showers and thunderstorms will increase today as a tropical wave moves across the region. Scattered to numerous showers and thunderstorms are expected, especially across the U.S. Virgin Islands this morning and western Puerto Rico this afternoon. Some storms may produce heavy rainfall, gusty winds, frequent lightning, and localized flooding. 🌡️ Dangerous heat will continue where rainfall is limited. A Heat Advisory remains in effect for Puerto Rico and the U.S. Virgin Islands. Stay weather aware and monitor for possible Flood Advisories or Warnings. ********* Español ********* ⛈️ Los aguaceros y las tormentas eléctricas aumentarán hoy con el paso de una onda tropical. Se esperan aguaceros y tormentas dispersas a numerosas, especialmente durante la mañana sobre las Islas Vírgenes Estadounidenses y en la tarde sobre el oeste de Puerto Rico. Algunas tormentas podrían producir lluvias intensas, ráfagas de viento, frecuentes descargas eléctricas e inundaciones localizadas. 🌡️ El calor peligroso continuará donde las lluvias sean limitadas. Una Advertencia de Calor permanece en efecto para Puerto Rico y las Islas Vírgenes Estadounidenses. Manténgase atento a posibles Avisos o Advertencias de Inundaciones.

Image Description

NWS San Juan graphic titled "Wetter Weather Returns." A GOES-19 Sandwich RGB satellite image shows a tropical wave approaching Puerto Rico and the U.S. Virgin Islands with increasing cloudiness and convection. Key messages highlight increasing showers and thunderstorms today, dangerous heat where rainfall is limited, and the potential for localized flooding. 🇪🇸 Gráfico del NWS San Juan titulado "Regresan las Lluvias". Una imagen satelital GOES-19 Sandwich RGB muestra una onda tropical acercándose a Puerto Rico y las Islas Vírgenes Estadounidenses con aumento de nubosidad y convección. Los mensajes destacan un aumento de aguaceros y tormentas hoy, calor peligroso donde llueva poco y el potencial de inundaciones localizadas.

San Juan Area Forecast Discussion

Seven-day Weather Risk Overview

The graphic shows the daily risk summary for 7 days. Daily risk is based on highest risk factor for that day.

	Mon 7/27	Tue 7/28	Wed 7/29	Thu 7/30	Fri 7/31	Sat 8/1	Sun 8/2
risk level	out of 10	out of 10	out of 10	out of 10	out of 10	out of 10	out of 10

No risk

Low risk

High risk

See the detailed risk analysis

Radar

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dBz	Intensity
−35–0	Extremely light (drizzle/snow)
0–20	Very light precipitation or general clutter
20–40	Light precipitation
40–50	Moderate precipitation
50–65	Heavy precipitation or some hail
>65	Extremely heavy precipitation including water-coated hail

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San Juan Forecast Office