Mesoscale Discussion 0823 NWS Storm Prediction Center Norman OK 0544 PM CDT Thu Jun 04 2020 Areas affected...Central/Eastern PA Concerning...Severe Thunderstorm Watch 250... Valid 042244Z - 050015Z The severe weather threat for Severe Thunderstorm Watch 250 continues. SUMMARY...Greatest short-term severe threat appears to be focusing across central and eastern Pennsylvania. Locally strong winds are the primary threat. DISCUSSION...Latest radar data suggests a weak MCV has developed over Jefferson County PA. This feature is shifting east and may enhance ongoing scattered convection downstream across central into eastern PA. Leading edge of this activity has shifted east of the watch into Berks County and will likely propagate another county or two before weakening. Air mass over the coastal Middle Atlantic is considerably less buoyant and visible satellite imagery supports this with very few boundary-layer cumulus. ..Darrow.. 06/04/2020 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...PHI...BGM...CTP... LAT...LON 41207815 41217670 40697531 40047519 39727640 39937858 41207815