MESOSCALE DISCUSSION 0346
   NWS STORM PREDICTION CENTER NORMAN OK
   0125 PM CDT MON APR 04 2011
   
   AREAS AFFECTED...CNTRL/ERN KY
   
   CONCERNING...TORNADO WATCH 92...
   
   VALID 041825Z - 041930Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 92 CONTINUES.
   
   AREAS N/E OF WW 92 ARE BEING MONITORED FOR AN ADDITIONAL WW.
   
   LEADING EDGE OF HIGH REFLECTIVITY ASSOCIATED WITH A FAST-MOVING QLCS
   WAS ROUGHLY BOUNDED FROM SPENCER TO SIMPSON COUNTIES IN KY AS OF
   1815Z. EXTRAPOLATION OF 50-60 KT FORWARD PROPAGATION SPEED SUGGESTS
   THIS QLCS WILL APPROACH THE NRN/ERN EXTENT OF WW 92 BETWEEN 20-21Z.
   ALTHOUGH SURFACE TEMPERATURES HAVE WARMED INTO THE LOWER TO MIDDLE
   70S DOWNSTREAM OF THIS LINE...THE AXIS OF RICHER LOW-LEVEL MOISTURE
   /CHARACTERIZED BY DEW POINTS AOA 60 F/ REMAINS FROM PORTIONS OF
   CNTRL/WRN KY SWWD. GIVEN THE FAST PROPAGATION OF THE QLCS
   INTERCEPTING THE RETURNING HIGHER-QUALITY BOUNDARY-LAYER
   MOISTURE...THERE IS SOME UNCERTAINTY OVER THE ROBUSTNESS OF THE
   SEVERE THREAT FARTHER TO THE N/E OF WW 92. NEVERTHELESS...50-60 KT
   SWLYS AT 1 KM AGL AMIDST STRONG DEEP-LAYER SHEAR /PER AREA VAD WIND
   PROFILES/ WILL REMAIN SUPPORTIVE OF BOWING SEGMENTS AND TRANSIENT
   LOW-LEVEL CIRCULATIONS PRODUCING PRIMARILY DAMAGING WINDS AND A FEW
   TORNADOES.
   
   ..GRAMS.. 04/04/2011
   
   
   ATTN...WFO...RLX...MRX...JKL...ILN...LMK...OHX...
   
   LAT...LON   36828665 37788575 38738486 39098351 38988286 38628220
               38178202 37298226 36958263 36598312 36518364 36478432
               36538536 36568610 36688643 36828665