Mc Henry, Maryland Weather Forecast Discussion

149
FXUS61 KPBZ 232357
AFDPBZ
Area Forecast Discussion
National Weather Service Pittsburgh PA
757 PM EDT Tue Sep 23 2025
.SYNOPSIS...
An upper level disturbance will cross the region and bring
scattered showers through late this evening. Higher rain
chances are forecast Wednesday into early Thursday. A dry
period is anticipated over the weekend.
&&
.NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/...
KEY MESSAGES:
- Showers dissipate this evening
- Dense fog potential after midnight
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A narrow band of showers with some embedded thunder has progressed
eastward across the area this evening along an axis of low-
level convergence with some meager surface based instability to
work with. Weak shear and forcing, with warm air in the mid-
levels, suppressed this from being any more than some
progressive moderate to heavy rain at times. With loss of
daytime heating, expect the line to fizzle out after sunset
though a few showers may linger in the ridges with orographic
ascent.
High-resolution models also indicate that dense fog may develop
after midnight, supported by ample boundary layer moisture from
earlier convection and light winds. If widespread low-visibility
conditions develop, a Dense Fog Advisory may be needed. HREF
probability for 

NWS PBZ Office Area Forecast Discussion