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MESOSCALE DISCUSSION 0814
NWS STORM PREDICTION CENTER NORMAN OK
0447 PM CDT WED MAY 07 2008
AREAS AFFECTED...SERN OK/NERN TX/WRN AND CENTRAL AR/NWRN LA
CONCERNING...SEVERE POTENTIAL...WATCH LIKELY
VALID 072147Z - 072315Z
CONVECTION CONTINUES TO INCREASE ACROSS OK AND N TX...WITH THREAT
FORECAST TO INCREASE EWD WITH TIME INTO AR/NWRN LA. NEW WW WILL
LIKELY BE NEEDED OVER THE NEXT 1-2 HOURS.
BROKEN LINE OF SHOWERS AND STORMS CONTINUES MOVING EWD ACROSS FAR
SERN OK AND INTO SWRN AR/NERN TX...THOUGH CAPPING STILL APPEARS TO
PERSIST AHEAD OF THE ONGOING CONVECTION PER LATEST OBJECTIVE
ANALYSES. HOWEVER...AS UPPER LOW NOW OVER WRN OK CONTINUES MOVING
SLOWLY EWD...EXPECT CONTINUED EROSION OF THE CAP...FACILITATING AN
EWD INCREASE IN CONVECTIVE COVERAGE/INTENSITY.
AS STORMS DEVELOP EWD...INTENSITY WILL BE AIDED BY DEEP-LAYER WIND
FIELD STRONGLY SUPPORTIVE OF SUPERCELLS. ALONG WITH THREATS FOR
LARGE HAIL AND LOCALLY-DAMAGING WINDS...DEGREE OF LOW-LEVEL SHEAR --
AIDED BY SSELY BOUNDARY-LAYER FLOW -- SUGGESTS A POTENTIAL FOR
ISOLATED TORNADOES.
..GOSS.. 05/07/2008
ATTN...WFO...JAN...LZK...LCH...SHV...TSA...HGX...FWD...
35469475 35499292 35189201 34069162 32689216 31369361
31019462 30989573 32869509 35239569
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