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  "path": "/products/md/md0801.html",
  "publishedAt": "2026-05-20T16:41:03.000Z",
  "site": "https://www.spc.noaa.gov",
  "tags": [
    "Read more"
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  "textContent": "MD 0801 CONCERNING SEVERE POTENTIAL...SEVERE THUNDERSTORM WATCH LIKELY FOR PORTIONS OF THE MID-ATLANTIC\n\n\n\n\n    Mesoscale Discussion 0801\n    NWS Storm Prediction Center Norman OK\n    1123 AM CDT Wed May 20 2026\n\n    Areas affected...portions of the Mid-Atlantic\n\n    Concerning...Severe potential...Severe Thunderstorm Watch likely\n\n    Valid 201623Z - 201800Z\n\n    Probability of Watch Issuance...80 percent\n\n    SUMMARY...Widely scattered thunderstorms will pose a risk for\n    damaging wind gusts and isolated large hail this afternoon and\n    evening. A Severe Thunderstorm Watch will be needed soon.\n\n    DISCUSSION...Latest surface observations depict a cold front\n    extending from central New York southwestward through north-central\n    and western Pennsylvania into southeast Ohio. Ahead of this cold\n    front, temperatures are warming into the 90s across portions of the\n    Mid-Atlantic, with surface dewpoints in the low/mid 60s F. Continued\n    heating of this air mass is supporting 1000-1500 J/kg MLCAPE, with\n    further destabilization anticipated through the afternoon hours.\n\n    Recent satellite/radar imagery has shown increasing convective\n    coverage ahead of the aforementioned cold front as remaining\n    inhibition is eroded. With stronger mid/upper-level flow remaining\n    displaced to the northwest, only modest effective shear is analyzed\n    across the region (generally 20-30+ kts per latest mesoanalysis).\n    This will be sufficient to support updraft organization with\n    multicells, and perhaps marginal supercells, likely. Steep low-level\n    lapse rates, well-mixed boundary layer profiles, and surface\n    dewpoint depressions exceeding 20-25 F will promote the potential\n    for damaging wind gusts, particularly with any more organized\n    clusters that develop. Isolated instances of large hail may also\n    accompany any more robust updrafts despite weak mid-level lapse\n    rates (as sampled by the 12z PIT/IAD observed soundings). A Severe\n    Thunderstorm Watch will be needed soon.\n\n    ..Chalmers/Hart.. 05/20/2026\n\n    ...Please see www.spc.noaa.gov for graphic product...\n\n    ATTN...WFO...PHI...BGM...CTP...LWX...PBZ...RLX...\n\n    LAT...LON   40687798 40987676 40987614 40907587 40747568 40397553\n                39967560 39437589 39147621 38927665 38687793 38597862\n                38587907 38767959 39117993 39388003 39737992 40107959\n                40247926 40687798\n\n    MOST PROBABLE PEAK WIND GUST...55-70 MPH\n    MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN\n\n\n\nRead more",
  "title": "SPC MD 801"
}