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Heat Wave Expands to the East Coast; Flash Flooding Likely in the Central Plains into the Midwest; Severe Thunderstorms in the Northeast

Dangerous, prolonged heat is ongoing in the Mid-South to Mid-Mississippi Valley and heat expands into the Northeast for a brief period today. Widely scattered instances of flash flooding due to heavy rains are forecast from northeast Kansas to much of Indiana. Scattered strong to severe thunderstorms are possible across parts of New England, northern Mid-Atlantic, and North Dakota. Read More >

 
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.AVIATION /06Z SATURDAY THROUGH WEDNESDAY/... Showers and thunderstorms are expected to develop this afternoon through this evening as a front drops through the region amidst very warm and humid air. While the overall condition today is expected to be VFR, could see some reductions if storms hit a terminal directly. Torrential rainfall (1-2"/hour), frequent lightning, and wind gusts up to 50 mph will all be threat this afternoon. These will be scattered in nature though, so exact impacts on any one given terminal are still somewhat uncertain, so kept the PROB30 groups in. For MRB, certainty is higher though, so did a prevailing group with a tempo for more intense storms. later TAF AMDs may be able to hone in on the threat a little better. IFR CIGS seem likely tonight across much of the region as low- level moisture increases and becomes trapped beneath the inversion. Could even see some dense fog in areas, but not sure if that will impact any of the terminals at this time. More showers and gusty thunderstorms are expected Sunday as a more potent piece of upper-level energy traverses the region. Expect the same threats as we see today, but with a bit more certainty. Expect this activity to show up with the afternoon TAF package. On Monday, the upper ridge begins to build back overhead, which could lead to a decrease in thunderstorm coverage. However, there does appear to be a disturbance moving around the eastern edge of this ridge, which could bring storms to MRB and CHO. Flight restrictions are possible Tuesday and Wednesday afternoon due to shower and thunderstorm chances. Otherwise, prevailing VFR conditions are expected across all terminals. Northwesterly winds blow 5 to 10 knots each afternoon before becoming light and variable overnight. AVIATION...AVS/CJL Update as of: 327 AM EDT Sat Jul 26 2025

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