Scientific Forecaster Discussion
Area forecast discussion
National Weather Service Pittsburgh PA
1127 am EDT Wednesday Sep 2 2015
warm and humid conditions will continue through the week with
isolated...mainly afternoon showers and thunderstorms.
Near term /until 6 PM this evening/...
a shortwave advancing across the upper Ohio Valley region is
prognosticated to bring isolated to scattered showers and thunderstorms
today...though normalized cape indicates weak ascent. The best
coverage is expected to be southeast of pit where the axis of an upper
thermal trough is prognosticated to cross. Highs should continue 5 to 10
degrees above seasonal levels.
Short term /6 PM this evening through Friday/...
Ridge establishes itself again late tonight through Friday. Again
isolated showers/storms could develop with the heat of the
day...particularly late in the afternoon Thursday...as another
weak disturbance brushes the area.
Warm and humid for the duration of the short term.
Long term /Friday night through Tuesday/...
the strong middle/upper ridge is prognosticated to rebuild through the long
term period. Relief from the dry and warm conditions may come
with a middle week cold front.
Aviation /15z Wednesday through Sunday/...
VFR can be expected with exceptions for isolated to scattered
convection and peri-dawn fog.
Outlook...Thursday night through Sunday...
brief restrictions are anticipated with peri-dawn fog.