Heavy Rain and Thunderstorms in the Plains; Snow in the Northern Rockies; Heavy Rain in Guam
A storm system moving over the Rockies today will bring marginal risks for excessive rainfall and severe thunderstorms from parts of New Mexico into western South Dakota. Heavy snow expected from northwestern Wyoming into southern Montana. Ongoing heavy showers and thunderstorms from Invest 96W could result in localized flash flooding, particularly in central or southern Guam early this morning. Read More >
| NWS Forecast for: Mona Passage Southward to 17N (AMZ741) Issued by: National Weather Service San Juan, PR Last Update: 415 AM AST Wed Oct 15 2025 | |
Today: Southeast winds 5 to 10 knots, becoming south late. Seas around 3 feet. Wave detail: southeast 3 feet at 6 seconds and northeast 2 feet at 9 seconds. Isolated showers. Tonight: Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 6 seconds and northeast 2 feet at 8 seconds. Thursday: Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: south 2 feet at 5 seconds and northeast 2 feet at 8 seconds. Scattered showers. Thursday Night: Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: southwest 2 feet at 4 seconds and northeast 1 foot at 9 seconds. Scattered showers. Friday: Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: southwest 2 feet at 4 seconds and northeast 2 feet at 10 seconds. Scattered showers. Friday Night: South winds 5 to 10 knots. Seas 2 to 4 feet. Wave detail: north 3 feet at 11 seconds and northeast 2 feet at 11 seconds. Scattered showers in the evening, then numerous showers after midnight. Saturday: Southeast winds around 5 knots. Seas 3 to 4 feet. Scattered showers. Saturday Night: East winds 5 to 10 knots, increasing to 10 to 15 knots after midnight. Seas 3 to 4 feet. Sunday: East winds 10 to 15 knots. Seas 4 to 5 feet. Sunday Night: East winds 15 to 20 knots. Seas 5 to 6 feet. | |
| Zone Forecast: Mona Passage Southward to 17N (AMZ741) | |
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