ZCZC SPCSWOMCD ALL ACUS11 KWNS 280657 SPC MCD 280657 TNZ000-GAZ000-ALZ000-MSZ000-280830- Mesoscale Discussion 0295 NWS Storm Prediction Center Norman OK 0157 AM CDT Sun Mar 28 2021 Areas affected...Parts of northeastern Mississippi...northern Alabama...adjacent southern Tennessee and northwestern Georgia Concerning...Tornado Watch 64...65... Valid 280657Z - 280830Z The severe weather threat for Tornado Watch 64, 65 continues. SUMMARY...A squall line will rapidly overspread the region through 5-6 AM CDT, posing a risk for potentially damaging surface gusts and/or brief tornadoes. DISCUSSION...The southern flank of the more intense portion of the ongoing larger-scale squall line appears likely to rapidly overspread much of northern Alabama, adjacent southern Tennessee and northwestern Georgia through 10-11Z. This convection is embedded within intensifying southwesterly lower/mid tropospheric wind fields (including in excess of 50 kt around 850 mb), with associated strengthening low-level shear contributing to the evolution of a number of cyclonic mesoscale circulations. With a relatively warm and moist boundary layer remaining potentially moderately unstable across much of northern Alabama, inflow of this air should maintain renewed vigorous thunderstorm development. ..Kerr.. 03/28/2021 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...MRX...FFC...OHX...BMX...HUN...MEG...JAN... LAT...LON 34208862 34898761 35338622 35188517 34258531 33678714 33678875 34208862 NNNN