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  "path": "/products/md/md0882.html",
  "publishedAt": "2026-05-28T18:39:03.000Z",
  "site": "https://www.spc.noaa.gov",
  "tags": [
    "Read more"
  ],
  "textContent": "MD 0882 CONCERNING SEVERE POTENTIAL...SEVERE THUNDERSTORM WATCH LIKELY FOR PORTIONS THE NORTHWEST AND NORTHERN GREAT BASIN\n\n\n\n\n    Mesoscale Discussion 0882\n    NWS Storm Prediction Center Norman OK\n    0129 PM CDT Thu May 28 2026\n\n    Areas affected...portions the Northwest and northern Great Basin\n\n    Concerning...Severe potential...Severe Thunderstorm Watch likely\n\n    Valid 281829Z - 282100Z\n\n    Probability of Watch Issuance...80 percent\n\n    SUMMARY...Scattered to numerous thunderstorms are likely this\n    afternoon and evening over portions of the Pacific Northwest and\n    northern Great Basin. Convection should increase in coverage with a\n    risk for severe/damaging wind gusts, hail and perhaps a tornado or\n    two. A WW is likely, though timing remains uncertain.\n\n    DISCUSSION...As of 1830 UTC, WV imagery showed a deep upper low over\n    central CA with several prominent shortwave troughs embedded within\n    the broader cyclonic flow. Visible imagery showed a broad area of\n    cumuliform clouds in vicinity to the most prominent shortwave\n    feature rotating northward across central and northern NV.\n    Unseasonably high surface moisture (dewpoints in the 40s and 50s F)\n    is in place over OR, WA, and ID. As diurnal heating continues\n    beneath cool mid-level temperatures, steepening low and mid-level\n    lapse rates will contribute to moderate destabilization and\n    thunderstorm development/intensification.\n\n    A very complex convective evolution is expected this afternoon. CAM\n    guidance shows several bands of convection gradually deepening over\n    northern NV and moving northwestward with the strong shortwave\n    trough. Additional storms may develop along local terrain features\n    and across the diffuse synoptic boundary across southern OR. 50+ kt\n    of east/southerly mid-level flow will overspread the instability,\n    contributing to moderate/strong effective shear. Initially more\n    cellular storms may organize into supercells or clusters. Most\n    guidance shows eventual upscale growth into a more linear structure\n    with time.\n\n    Steep lapse rates and the enhanced flow aloft suggest severe wind\n    gusts are the most likely hazard. Some hail may also occur, given\n    cool mid-level temperatures and the degree of buoyancy. Unusually\n    strong low-level shear beneath the easterly jet aloft may also\n    support a risk for a tornado or two, especially with any persistent\n    supercells.\n\n    The severe risk is expected to increase from midday into this\n    evening as the upper trough rotates northward and intersects with\n    the more unstable air mass. The highest confidence in a sustained\n    severe risk resides east of the Cascades over much of OR currently.\n    This will likely necessitate one or more Severe Thunderstorm Watches\n    this afternoon/evening. However, confidence in the exact timing\n    remains very uncertain.\n\n    ..Lyons/Hart.. 05/28/2026\n\n    ...Please see www.spc.noaa.gov for graphic product...\n\n    ATTN...WFO...BOI...LKN...PDT...REV...MFR...PQR...\n\n    LAT...LON   42622108 43462210 45102252 45702170 46271890 45881725\n                45501690 45021683 43221664 42101631 41761670 41691738\n                41741872 42312075 42622108\n\n    MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH\n    MOST PROBABLE PEAK WIND GUST...65-80 MPH\n    MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN\n\n\n\nRead more",
  "title": "SPC MD 882"
}