Area Forecast Discussion
Issued by NWS Pittsburgh, PA

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

000
FXUS61 KPBZ 170717
AFDPBZ

Area Forecast Discussion
National Weather Service Pittsburgh PA
317 AM EDT Tue May 17 2022

.SYNOPSIS...
Dry weather returns today under high pressure, but rain is back
in the forecast for mid week.

&&

.NEAR TERM /THROUGH TONIGHT/...
High pressure will become the dominant weather feature across
the area. Thus will expect dry and seasonably cool weather
through today and into tonight as sfc high pressure builds
under NW flow aloft. Cooler temps and mainly clear skies over
the Allegheny National Forest will lead to some patchy frost
concerns tonight. Transient high pressure will begin to shift
east ahead of the next shortwave trough impacting the region
beginning Wednesday morning with showers developing ahead of an
approaching warm front.

&&

.SHORT TERM /WEDNESDAY THROUGH WEDNESDAY NIGHT/...
A general zonal flow aloft is progged by mid week, but a
shortwave embedded in the flow is expected to cross the region
with scattered clouds and showers returning and inhibiting
temperature rebound for Wednesday. Showers chances will persist
into Wednesday night with sustained instability leading to
thunderstorms possible as well with the approach of stronger
forcing from a cold front.

&&

.LONG TERM /THURSDAY THROUGH MONDAY/...
Model ensembles indicate another shortwave embedded in the zonal
flow should maintain showers/tstm chances on Thursday. The upper
air pattern is expected to become amplified by Friday as an
upper trough digs across the Central CONUS. Ridging ahead of
this trough should result in warm and mainly dry weather on
Friday. Shower and thunderstorm chances return for the weekend
as the trough approaches and crosses the Upper Ohio Valley
region. High pressure is expected to return again for the
beginning of the workweek as ridging aloft as well will anchor
dry weather in place for at least a couple days.

&&

.AVIATION /07Z TUESDAY THROUGH SATURDAY/...
A few mid lvl clouds are expected overnight with a weak,
reinforcing cdfnt. Otrw, building high pressure should maintain
VFR through the TAF period. Mixing and a pressure gradient
should also result in diurnal gusty NW wind today.

.Outlook...
Restrictions are likely late Wed/Wed night with a crossing
trough. Shra/ts restriction potential returns with a Sat cdfnt.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
PA...None.
OH...None.
WV...None.

&&

$$


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.