MD 1451 CONCERNING SEVERE THUNDERSTORM WATCH 440… FOR SOUTHERN KS…NORTHERN OK
Mesoscale Discussion 1451 NWS Storm Prediction Center Norman OK 0611 PM CDT Sat Aug 05 2017 Areas affected...Southern KS...Northern OK Concerning...Severe Thunderstorm Watch 440... Valid 052311Z - 060045Z The severe weather threat for Severe Thunderstorm Watch 440 continues. SUMMARY...Severe threat appears to be increasing across southern KS and northern OK. Damaging winds and large hail are expected. New WW may be required across southeast KS and northeast OK. DISCUSSION...Early-evening satellite imagery suggests convection across southern KS and northern OK is evacuating air efficiently with expanding/cooling cloud tops. Radar imagery supports this with numerous thunderstorm clusters maturing and coalescing across WW440. With time it appears an MCS will evolve along the KS/OK border and this activity should begin to propagate east-southeast into northeast OK where surface-3km lapse rates are steep and buoyancy more than adequate for sustaining this complex of storms. In addition, southwesterly LLJ will focus inflow across this region assisting in the longevity of the MCS. New WW may be warranted downstream for this activity. ..Darrow.. 08/05/2017 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...TSA...TOP...ICT...OUN...DDC...AMA... LAT...LON 36410002 38579944 38569629 36429697 36410002
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