ZCZC SPCSWOMCD ALL ACUS11 KWNS 240422 SPC MCD 240422 FLZ000-GAZ000-ALZ000-240515- MESOSCALE DISCUSSION 1991 NWS STORM PREDICTION CENTER NORMAN OK 1022 PM CST TUE DEC 23 2014 AREAS AFFECTED...CENTRAL FL PANHANDLE INTO NORTHWEST FL AND SOUTHWEST GA CONCERNING...TORNADO WATCH 561... VALID 240422Z - 240515Z THE SEVERE WEATHER THREAT FOR TORNADO WATCH 561 CONTINUES. SUMMARY...A NEW TORNADO WATCH WILL BE COORDINATED PRIOR TO 05Z FOR PARTS OF THE CENTRAL FL PANHANDLE INTO NORTHWEST FL AND SOUTHWEST GA. A LINE OF STORMS WILL TRACK EWD OVERNIGHT THROUGH THIS REGION...PRODUCING A POTENTIAL FOR DAMAGING WINDS AND A TORNADO THREAT AS LOW-LEVEL SHEAR INCREASES. DISCUSSION...AT 04Z...MOSAIC RADAR IMAGERY SHOWED A LINE OF STORMS EXTENDING FROM JUST EAST OF KATL SWWD THROUGH FAR SERN AL TO THE WRN FL PANHANDLE. LIGHTNING PRODUCTION HAS INCREASED ALONG THE PORTION OF THIS LINE IN SERN AL WHERE IR SATELLITE IMAGERY SHOWED COOLING CLOUD TOPS. DEEP LAYER WIND FIELDS WILL STRENGTHEN FROM THE NERN GULF INTO THE SERN STATES AS A STRONG SHORTWAVE TROUGH MOVES INTO THE LOWER MS VALLEY THROUGH 12Z...WITH A 50-60 KT SSWLY LLJ TRANSLATING EWD ACROSS THE DISCUSSION AREA. MOISTURE WILL CONTINUE TO ADVANCE POLEWARD WITH SURFACE DEW POINTS IN THE MIDDLE 60S SPREADING INTO SRN GA...WITH VALUES AROUND 70 F ALONG THE NERN GULF COAST. RECENT TRENDS IN OBJECTIVE ANALYSES INDICATED ONGOING DESTABILIZATION WITH MODERATE MUCAPE INTO THE ERN FL PANHANDLE AT 04Z. GIVEN THE EXPECTED INCREASE IN LOW-LEVEL AND DEEP-LAYER SHEAR ACROSS THIS DISCUSSION AREA AND THE LOW-LEVEL MOISTENING...PARCELS WILL CONTINUE TO BECOME NEAR-SURFACE TO SURFACE-BASED FROM SOUTH TO NORTH ENHANCING THE TORNADO POTENTIAL. IN ADDITION...THERE COULD BE STORMS DEVELOPING IN THE WARM SECTOR EAST OF THE ONGOING LINE OF STORMS THAT WOULD ALSO POSE A SEVERE WEATHER THREAT. ..PETERS/MEAD.. 12/24/2014 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...TBW...JAX...FFC...TAE... LAT...LON 29688692 30538619 31378511 32048460 32098422 32018366 31908301 31388270 30558279 29908290 29328307 29118346 28928425 29688692 NNNN