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    • Special Weather Statement issued July 17 at 5:49PM EDT by NWS Jacksonville FLView the full article
    • Severe Thunderstorm Warning issued July 17 at 5:48PM EDT until July 17 at 6:15PM EDT by NWS Charleston SCView the full article
    • Severe Thunderstorm Warning issued July 17 at 5:48PM EDT until July 17 at 6:15PM EDT by NWS Columbia SCView the full article
    • MD 1671 CONCERNING SEVERE THUNDERSTORM WATCH 553... FOR NORTHERN VIRGINIA AND MARYLAND Mesoscale Discussion 1671 NWS Storm Prediction Center Norman OK 0326 PM CDT Wed Jul 17 2024 Areas affected...Northern Virginia and Maryland Concerning...Severe Thunderstorm Watch 553... Valid 172026Z - 172200Z The severe weather threat for Severe Thunderstorm Watch 553 continues. SUMMARY...The severe thunderstorm threat for WW 553 continues, with the primary threat being for thunderstorms capable of damaging wind gusts. DISCUSSION...Thunderstorm coverage has increased on the western periphery of the watch area, with current radar reflectivity showing some initial organization of convection into bowing segments. These thunderstorms are in an environment characterized by weak deep-layer vertical shear and only modest buoyancy, but steep low-level lapse rates and relatively dry sub-cloud layer forecast profiles support the continued downward transport of momentum from thunderstorm downdrafts. The greatest threat for wind damage will be with any organized bowing segments, as well as where favorable thunderstorm outflow mergers occur. Additionally, short-term WoFS guidance suggests elevated probabilities of 50+ MPH wind gusts over the next several hours. This convective activity is expected to continue to progress eastward into Maryland this afternoon and into this evening, before eventually dying off as the nocturnal boundary-layer stabilizes. ..Halbert/Squitieri.. 07/17/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...PHI...AKQ...LWX...RNK... LAT...LON 37607926 38067899 38797855 39467815 39607756 39607681 39597631 39477595 39177580 38727587 38357609 38017641 37717679 37507717 37457748 37437807 37487873 37467915 37607926 Read more View the full article
    • MD 1672 CONCERNING SEVERE POTENTIAL...WATCH POSSIBLE FOR EXTREME SOUTHEAST WY INTO THE NE PANHANDLE...EASTERN CO AND EXTREME WESTERN KS Mesoscale Discussion 1672 NWS Storm Prediction Center Norman OK 0349 PM CDT Wed Jul 17 2024 Areas affected...Extreme southeast WY into the NE Panhandle...eastern CO and extreme western KS Concerning...Severe potential...Watch possible Valid 172049Z - 172245Z Probability of Watch Issuance...40 percent SUMMARY...Trends are being monitored for an increasing severe-wind threat. Isolated hail remains possible. DISCUSSION...At 2045 UTC, convective outflow was moving southward near the common border of WY/NE/CO, southeast of Cheyenne, and some recent tendency for increasing convection near the outflow has been noted. In the short term, moderate buoyancy (MLCAPE of 1000-1500 J/kg) and marginally sufficient deep-layer shear could continue to support isolated marginal supercells, with an attendant threat of large hail and localized severe gusts. There is some potential for this outflow to grow with time and potentially consolidate with outflow from storms closer to the CO Front Range. Should this occur, a somewhat greater severe-wind threat could evolve late this afternoon into early evening, and watch issuance would be possible in order to address this threat. Otherwise, occasionally organized semi-discrete cells could continue to pose a threat of isolated hail and severe gusts across parts of eastern CO and adjacent portions of southeast WY and western NE/KS through late afternoon. ..Dean/Hart.. 07/17/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LBF...DDC...GLD...PUB...BOU...CYS... LAT...LON 38330376 39350429 40940482 41300481 41520466 41990439 42200393 42400236 41020132 38130121 37790241 37790311 38330376 Read more View the full article
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