Scientific Forecaster Discussion
Area forecast discussion
National Weather Service Pittsburgh PA
622 am EDT sun Oct 4 2015
upper level low will exit to the east...allowing for a mainly dry
day with moderating temperatures. Most of the upcoming week will
be dry with seasonable temperatures.
Near term /until 6 PM this evening/...
no changes needed for the near-dawn update.
upper level system finally releases its hold over the area today.
This will allow upper level heights to transition to a more zonal
flow. Could see a lingering shower or drizzle over the ridges...
but the rest of the area will be dry. Forecast soundings are
indicating mixing heights rising today...meaning lower clouds will
decay this morning. The exception will be over the ridges...where
the persistent easterly flow will keep the inversion very low.
This setup will provide a wide range of temperatures from the
ridges to the far west.
Short term /6 PM this evening through Tuesday/...
drying weather will remain through Tuesday with high pressure in
control. Temperatures will be near or slightly above seasonal
Long term /Tuesday night through Saturday/...
heights will rise aloft in a developing zonal flow through the
week. Temperatures will warm above average. A cold front will
approach Friday...providing our next chance for rain. Cooler
temperatures for the weekend.
Aviation /10z Sunday through Thursday/...
degraded ceilings will continue to plague ports from pit northward this morning as
moisture continues to flow over the region Ely surface wind...with
diffluent flow aloft. However...the general trend will be of
improvement as high pressure gradually strengthens and general VFR
is anticipate by midday.
Outlook...Sunday night through Thursday...
general VFR can then be expected through midweek.