Administrators NorthGeorgiaWX Posted November 20, 2023 Administrators Share Posted November 20, 2023 MD 2272 CONCERNING SEVERE POTENTIAL...WATCH UNLIKELY FOR PORTIONS OF NORTH TX...SOUTHEAST OK...AND SOUTHWEST AR Mesoscale Discussion 2272 NWS Storm Prediction Center Norman OK 0711 AM CST Mon Nov 20 2023 Areas affected...portions of north TX...southeast OK...and southwest AR Concerning...Severe potential...Watch unlikely Valid 201311Z - 201515Z Probability of Watch Issuance...20 percent SUMMARY...Isolated hail around a half inch to near one inch in diameter is possible the next few hours. DISCUSSION...A deepening field of altocumulus is evident in IR imagery this morning across north TX. Based on 12z FWD RAOB, these clouds are likely rooted around 600 mb. This indicates increasing ascent associated with the approaching upper trough is spreading east, and aiding in modest growth over the past hour. Regional 12z RAOBs still indicate quite a bit of low-level inhibition, with layers of dry air above shallow boundary-layer moisture. Moistening and heating through mid to late morning will continue to improve the thermodynamic environment, while large-scale ascent erodes capping. In the short term, steepening midlevel lapse rates and favorable vertical shear may support transient strong cells capable of marginally severe hail through around 16z. A severe thunderstorm watch is not expected at this time, as initial convection is expected to only slowly increase in intensity the next few hours, but trends will be monitored closely. ..Leitman/Edwards.. 11/20/2023 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LZK...SHV...TSA...FWD...OUN... LAT...LON 34179250 33729279 32029513 31449665 31579733 31939779 32289768 34649587 35089512 35169438 34989351 34409263 34179250 Read more View the full article Quote Link to comment Share on other sites More sharing options...
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