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Mesoscale Discussion 385 |
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MESOSCALE DISCUSSION 0385
NWS STORM PREDICTION CENTER NORMAN OK
0238 PM CDT FRI APR 15 2016
AREAS AFFECTED...PORTIONS OF THE TX/OK PANHANDLES...SERN CO...FAR
ERN NM
CONCERNING...SEVERE POTENTIAL...TORNADO WATCH LIKELY
VALID 151938Z - 152145Z
PROBABILITY OF WATCH ISSUANCE...95 PERCENT
SUMMARY...THE POTENTIAL FOR SUPERCELLS WITH ALL SVR MODES IS
INCREASING...AND A TORNADO WATCH WILL LIKELY BE COORDINATED PRIOR TO
21Z.
DISCUSSION...A DRYLINE IS SHARPENING FROM SERN CO SWD ALONG THE W
TX/ERN NM BORDER. PRESENT INDICATIONS ARE THAT LARGE SCALE ASCENT IN
THE EXIT REGION OF A MID-LEVEL SPEED MAX EMERGING OVER THE SRN
ROCKIES WILL COMBINE WITH DIURNALLY ENHANCED DRYLINE SOLENOIDS TO
FOSTER ISOLATED TO WIDELY SCATTERED CONVECTIVE DEVELOPMENT IN THE
20-22Z TIME FRAME. PARTIALLY MODIFIED GULF MOISTURE E OF THE DRYLINE
SURMOUNTED BY H7-H5 LAPSE RATES AROUND 8.8 C/KM SAMPLED BY THE 18Z
AMA RAOB WILL SUPPORT MLCAPE AROUND 1000-2000 J/KG BY PEAK HEATING
YIELDING ROBUST CONVECTION. INCREASING EFFECTIVE BULK SHEAR TO 40-50
KT ORIENTED WITH AN ORTHOGONAL COMPONENT TO THE DRYLINE WILL SUPPORT
SUPERCELLS WITH POTENTIALLY SIGNIFICANT HAIL ALONG WITH SVR WIND
GUSTS. INCREASING LOW-LEVEL SRH -- ESPECIALLY TOWARD SUNSET -- WILL
SUPPORT TORNADO POTENTIAL...AS WELL -- LASTING INTO THE EVENING
DESPITE THE MODEST LOW-LEVEL MOISTURE AS CONVECTION SPREADS
EWD/NEWD.
..COHEN/HART.. 04/15/2016
ATTN...WFO...DDC...LUB...AMA...PUB...ABQ...
LAT...LON 35270302 36970304 38080235 38040083 36780033 35120049
34640191 35270302
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