Mesoscale Discussion 0597 NWS Storm Prediction Center Norman OK 0621 PM CDT Sat Apr 29 2017 Areas affected...Eastern AR Concerning...Severe potential...Watch possible Valid 292321Z - 300015Z Probability of Watch Issuance...40 percent SUMMARY...Convection will increase across eastern AR into northwest MS and western TN this evening. Isolated severe wind gusts and hail are possible. DISCUSSION...Long-lived compact MCS has progressed into southern AR this evening. Latest radar imagery suggests a MCV is embedded within this cluster of convection near Cleveland County AR which is lifting northeast at roughly 30kt. Convection is slowly increasing along the leading edge of the MCS from Arkansas County to Chicot County AR and this slowly evolving squall line should advance into northwest MS over the next few hours. Strong storms continue to develop along the southwest flank of the MCS where low-level warm advection is maximized. Large hail is common with the strongest updrafts as inflow buoyancy is considerably greater atop the rain-cooled air mass. ..Darrow/Thompson.. 04/29/2017 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...MEG...JAN...LZK...SHV... LAT...LON 33789322 35719168 36109049 35328997 33109125 33789322Read more
from SPC Forecast Products http://ift.tt/IIyY73
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