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Everything posted by WxWatcher007
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Augdewst 2026: Summer's Last Stand
WxWatcher007 replied to Prismshine Productions's topic in New England
The peak has come and gone. Yes they would. People always complain. Suppression depression Cold/dry until it’s warm/wet -
15% chance of an area within 25 miles seeing rainfall that exceeds flash flood guidance. Kind of similar to SPC outlooks of having a certain percentage chance of seeing severe within 50mi or whatever it is. Flash flood guidance varies depending on recent rainfall (among other things, probably). Caveat is moderate risk on rainfall is not the same as a mod risk for severe. When I see a mod rain risk it’s noteworthy but not uncommon. A high risk is serious though—they almost always precede catastrophic flooding somewhere within the zone.
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Mesoscale Precipitation Discussion 0877 NWS Weather Prediction Center College Park MD 1247 PM EDT Tue Jul 28 2026 Areas affected...Southeastern New York through Western New England Concerning...Heavy rainfall...Flash flooding likely Valid 281646Z - 282245Z SUMMARY...Numerous thunderstorms have developed across portions of New York into New England. Flash flooding is likely as the storms interact with the terrain. DISCUSSION...Numerous thunderstorms have formed in several clusters from central New York through portions of western New England this afternoon. These clusters have a history of producing multiple-inch-per-hour rainfall rates. Duration has also been a distinguishing factor as some portions of central New York have seen heavy rainfall for several hours. The clusters of storms have developed ahead of a strong upper level negatively tilted trough, on the leading edge of a potent low level jet advecting high PWATs to 1.5 to 1.75 inches right into eastern New York and western New England. With plentiful terrain in these areas, the combination of upslope into the south-facing slopes of the mountains, heavy rain that's likely to persist for multiple hours, and plentiful moisture allowing storms to train and backbuild will all combine to make flash flooding likely in this region through the afternoon. While the heaviest rain has been in Central New York thus far, streamers of storms will fill in most areas in eastern New York over to western New England through the afternoon as peak heating and instability advection both increase the coverage, severity, and duration of the strongest storms. Urban and small stream flooding are most likely, especially off the south-facing slopes of the mountains and in the urban areas subject to the longer durations of heavy rainfall. Locally significant flash flooding can't be ruled out. High resolution CAMs guidance suggests the most persistent rains will be in the western areas from Binghamton up I-88, and for eastern areas from western Connecticut into southern Vermont from I-91 west. There remains some uncertainty for the Catskills through the Hudson Valley, where southerly flow may limit the convective coverage since terrain won't necessarily help concentrate the heaviest rainfall, and storms to the south may limit how much instability can advect into that area. Wegman
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2026 C and E Pacific tropical activity
WxWatcher007 replied to GaWx's topic in Tropical Headquarters
Pac looking pretty active right now with a brief C5 (Genevieve) off the Mexican coast and likely close Hawaii approach from Fausto.
