MD 0540 CONCERNING SEVERE THUNDERSTORM WATCH 140…141…142… FOR WESTERN TENNESSEE…SOUTHEAST ARKANSAS…NORTHWESTERN MISSISSIPPI…NORTHERN AND WESTERN LOUISIANA…FAR EASTERN TEXAS
Mesoscale Discussion 0540
NWS Storm Prediction Center Norman OK
0931 PM CDT Sat Apr 15 2023
Areas affected...western Tennessee...southeast
Arkansas...northwestern Mississippi...northern and western
Louisiana...far eastern Texas
Concerning...Severe Thunderstorm Watch 140...141...142...
Valid 160231Z - 160330Z
The severe weather threat for Severe Thunderstorm Watch 140, 141,
142 continues.
SUMMARY...The severe threat continues across the remainder of Severe
Thunderstorm Watches 140-142. Large hail and damaging gusts are
still the main threats. The severe threat should gradually wane into
the evening with nocturnal stabilization.
DISCUSSION...Regional and MRMS mosaic radar imagery depicts several
transient supercells, multicells, and linear segments in progress
across the lower MS Valley to the TX coast. These storms persist
amid residual boundary-layer-based buoyancy, with MRMS MESH data
suggesting that severe hail is falling from a sizeable portion of
the ongoing storms. Given the many cellular (cold pool) mergers that
have taken place, occasional damaging gusts are also possible for at
least a couple more hours. However, boundary-layer stabilization
should support a gradual decline in the severe potential deeper into
the night.
..Squitieri.. 04/16/2023
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...MEG...JAN...LIX...LZK...LCH...SHV...HGX...CRP...
EWX...
LAT...LON 30129257 29639383 28969563 28439715 28459807 28759840
28959821 29329664 29549602 30089532 31619351 33189233
34169187 35109101 35519010 36248961 36288915 36058851
35358835 34098881 32719002 31469115 30129257
