Mesoscale Discussion 1978
NWS Storm Prediction Center Norman OK
0912 PM CDT Sat Aug 12 2023
Areas affected…northern WV…western MD and southern PA
Concerning…Severe Thunderstorm Watch 639…
Valid 130212Z – 130345Z
The severe weather threat for Severe Thunderstorm Watch 639
SUMMARY…Strong to severe storms should continue for a few more
hours with a risk for damaging gusts and isolated hail.
DISCUSSION…Across WW639, several clusters of strong to severe
storms are expected to persist for a few more hours tonight. The
environment remains broadly favorable for severe weather as storms
track to the southeast across far southern PA, northern WV and
western MD. Storms have taken on a general linear mode, suggesting
damaging gusts are the primary risk for the remainder of tonight.
However, isolated hail is also possible, but more uncertain given
the trend away from supercell structures over the last couple of
hours. Given recent HRRR and radar trends, the highest confidence in
severe potential is expected over northern WV and the MD Panhandle
for the next couple of hours.
…Please see www.spc.noaa.gov for graphic product…
LAT…LON 38967890 38847950 38798016 38778054 38818100 39088116
39628052 40197887 40427796 40067768 39587781 39417809