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County Warning Area [CWA]: PBZ
Regional NWS Weather Office: Pittsburgh, PA
County Warning Area [CWA]: PBZ
Regional NWS Weather Office: Pittsburgh, PA
000 FXUS61 KPBZ 150532 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 1232 AM EST Sat Dec 15 2018 .SYNOPSIS... Rain expected through the weekend with the approach and passage of low pressure. Snow chances return Monday and Tuesday with cold flow off the Lake Region. && .NEAR TERM /THROUGH TODAY/... Quick update late this evening to bump up hourly temperatures and make some minor changes to PoPs overnight based off latest obs and guidance. Previous... Rain is still expected to continue developing as low pressure emerges from the Lower Mississippi Valley and maintains a pump of warm, moist air over the Upper Ohio Valley Region. Forecast rainfall amounts were not changed from the previous issuance and generally coincide with WPC and OHRFC QPF. The heavier rainfall is expected Saturday afternoon and evening. Since the rainfall will persist over an extended period of time, flooding hazards are not likely. A few isolated creeks may rise into action stage. && .SHORT TERM /TONIGHT THROUGH SUNDAY NIGHT/... Come Saturday night the upper level low is expected to be positioned over central Tennessee. Rain will continue to progress, but rainfall rates will quickly deteriorate as the system weakens. By Sunday night our region will be on the backside of the upper level low and northwest flow will dominate; colder air will gradually make its way into our region. A portions of our northern counties and areas in higher elevations are expected to experience a light wintry mix late Sunday/early Monday morning. && .LONG TERM /MONDAY THROUGH FRIDAY/... Strong northwest flow should maintain snow shower chances in the regions that usually benefit from lake enhancement. Dry weather is still expected through mid week under a building ridge ahead of a Western CONUS trough. Rain chances return Thursday as an upper level trough advances across the Great Lakes. && .AVIATION /06Z SATURDAY THROUGH WEDNESDAY/... Areas of MVFR/local IFR in rain are expected through the TAF period as low pressure advances across the TN and OH Valley regions. In between waves of rain, occasional improvement to VFR cigs is expected. Outlook... Widespread restrictions with periodic rain are expected to persist through Sunday with the crossing low. Restrictions are possible Monday with a crossing upper trough. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. && $$
| Forecast Discussion from: NOAA-NWS | Script developed by: El Dorado Weather |
