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| Mesoscale Discussion 2299 | |
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Mesoscale Discussion 2299 NWS Storm Prediction Center Norman OK 1024 AM CST Sat Dec 28 2024 Areas affected...portions of northern Louisiana into far southern Arkansas Concerning...Severe Thunderstorm Watch 717...718... Valid 281624Z - 281800Z The severe weather threat for Severe Thunderstorm Watch 717, 718 continues. SUMMARY...The severe threat continues across the remainder of Severe Thunderstorm Watch 717 and Tornado Watch 718. In the near term, the greatest severe threat will be with a line of storms approaching from far northeast TX. The severe threat may increase across southeast AR over the next few hours. All severe hazards are possible. DISCUSSION...A QLCS is rapidly translating eastward amid a mainly elevated airmass in place. However, the southernmost portion of this QLCS is poised to interact with the warm front and associated surface-based airmass (characterized by upper 60s F surface dewpoints and 1000+ J/kg MLCAPE). Damaging gusts are the main threat with this QLCS in the immediate time frame. However, any interaction with the warm front may support in an increase in isolated tornado potential over the next couple of hours, especially over far northern LA. Latest radar data also shows an increase in thunderstorm intensity over far southeast AR, where the QLCS will also move toward by afternoon. As such, a WW issuance may eventually be needed farther east/northeast of ongoing severe WWs 717-718. All severe hazards would be possible. ..Squitieri/Hart.. 12/28/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...JAN...LZK...SHV... LAT...LON 33049468 33759289 33979186 33689121 33229115 32769133 32529211 32469296 32409378 32399432 32419459 33049468 |
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