MESOSCALE DISCUSSION 1090 NWS STORM PREDICTION CENTER NORMAN OK 0747 PM CDT WED JUN 06 2012 AREAS AFFECTED...SERN WY/NEB PANHANDLE/NERN CO CONCERNING...TORNADO WATCH 361... VALID 070047Z - 070145Z THE SEVERE WEATHER THREAT FOR TORNADO WATCH 361 CONTINUES. SUMMARY...WEAK NEWD/EWD STORM MOTIONS ACROSS WW 361 AND GREATEST INSTABILITY REMAINING ACROSS THE WATCH WILL TEND TO KEEP STORMS CONFINED TO NERN CO/SERN WY AND THE NEB PANHANDLE THROUGH THE EVENING. STORM DEVELOPMENT SHOULD CONTINUE ALONG A BOUNDARY MOVING WWD...WHICH AT 00Z WAS LOCATED INVOF THE I-25 CORRIDOR FROM DEN-CYS. GREATEST LOW LEVEL SHEAR HAS REMAINED OVER SERN WY /WHERE AN ISOLATED TORNADO POTENTIAL EXISTS/. OTHERWISE...HAIL AND STRONG WIND GUSTS SHOULD BE THE PRIMARY THREATS. DISCUSSION...OBJECTIVE ANALYSES INDICATED STORM MOTIONS ACROSS THIS WATCH HAVE REMAINED WEAK TOWARD THE NE TO E...WITH ACTIVITY DEVELOPING ALONG A WWD MOVING BOUNDARY ACROSS NERN CO AND SERN WY WHERE A S-N CORRIDOR OF MODERATE INSTABILITY IS BEING CONVECTIVELY OVERTURNED. EFFECTIVE BULK SHEAR SINCE WATCH ISSUANCE HAS BEEN STRONGEST /35-45 KT/ ACROSS SERN WY WHERE STORMS HAVE SHOWN THE BEST ORGANIZATION. HOWEVER...A RECENT INCREASE IN SELY LOW LEVEL WINDS /25-30 KT/ INTO THE CO FRONT RANGE PER WIND PROFILERS AND WSR-88DS HAS SUPPORTED AN INCREASE IN BULK SHEAR /30-35 KT/ SUGGESTING STORMS SHOULD BECOME BETTER ORGANIZED /INCREASED SVR THREAT/ ACROSS THE CO PORTION OF WW 361. THIS INCREASE IN SELY LOW LEVEL WINDS SHOULD ENHANCE LOW LEVEL SHEAR SUPPORTING A TORNADO THREAT AS WELL. ..PETERS.. 06/07/2012 ATTN...WFO...LBF...UNR...GLD...PUB...BOU...CYS...
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