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Mesoscale Discussion 1679 |
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MESOSCALE DISCUSSION 1679
NWS STORM PREDICTION CENTER NORMAN OK
1101 PM CDT TUE AUG 07 2007
AREAS AFFECTED...CO...KS...NE
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
VALID 080401Z - 080600Z
MCS MOVING ACROSS THE HIGH PLAINS AGAIN TONIGHT WITH SOME POTENTIAL
FOR DAMAGING WINDS AND HAIL. LIMITED ORGANIZATION AND GENERALLY WEAK
FORCING WILL PROBABLY KEEP OVERALL SEVERE THREAT ISOLATED AND A
WATCH IS NOT PLANNED.
LARGE CONVECTIVE COLD POOL AGAIN PROVIDING MESOSCALE FORCING TO
MAINTAIN DEEP CONVECTION ACROSS ERN CO LATE THIS EVENING. AIR MASS
TO THE EAST OF THIS CONVECTION WAS VERY MOIST AND UNSTABLE WITH AN
AXIS OF 2000-2500 J/KG MLCAPE EXTENDING ENEWD ACROSS NWRN KS INTO
SRN NEB. LOW LEVEL ELY FLOW TOPPED BY WEAK AMBIENT WLY FLOW THROUGH
A DEEPER LAYER OF THE TROPOSPHERE SUGGESTS THAT STORM OUTFLOWS WILL
LIKELY CONTINUE TO GENERATE NEW UPDRAFTS AS ENTIRE COMPLEX SPREADS
EAST ALONG THE INSTABILITY AXIS. GIVEN GENERALLY WEAK DEEP-LAYER
EFFECTIVE SHEAR...BUT MODEST SR INFLOW AND SUPPORTIVE
THERMODYNAMICS...A FEW STRONGER WIND GUSTS AND PERHAPS HAIL WILL
REMAIN A POSSIBILITY...ESPECIALLY NEAR OUTFLOW INTERSECTIONS WHERE
STORM SCALE DYNAMICS MAY ENHANCE UPDRAFT PERSISTENCE/ORGANIZATION.
OVERALL POTENTIAL DOES NOT APPEAR TO WARRANT A WATCH.
..CARBIN.. 08/08/2007
ATTN...WFO...ICT...GID...LBF...DDC...GLD...PUB...BOU...
38459899 38020016 38100162 38460204 39080223 40040210
41050221 40960095 40839999 40259883 39859863
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