May 17, 2025 Saturday Tropical Update
Another storm system with severe potential and heavy rain
May 2025 was the 27th-warmest May in the 132-year national record (1895–2026), at 61.7°F against a 1991–2020 normal of 61.0°F (+0.7°F).
May 2025 was the 12th-wettest May in the 132-year national record (1895–2026), at 3.7in against a 1991–2020 normal of 3.1in (+0.6in).
NOAA/NCEI Climate at a Glance, contiguous United States. This is the observed record for the month, not a score of anything said in this piece — the forecast ledger begins 2026-08-17 and cannot reach earlier posts.
Yet another storm system forming in the Rockies and moving into the Plains will stretch out across the central U.S. with more severe weather. Starting in Texas this afternoon, supercells will fire with potential for tornadoes. Then on Sunday, an “enhanced” area of severe weather will move east into mid-Mississippi Valley.
Our old storm system moves from the Great Lakes into the Northeast, and it still has plenty of circulation and moisture to work with leading to severe storms in Upstate New York.
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