Marine Weather and Tide Forecast for Baltimore, OH

NEAR TERM /THROUGH TONIGHT/
Northwesterly flow continues this afternoon into the evening.
Temperatures remain well below average with forecast highs in the lower to middle 60s. A few isolated showers are possible when diurnal instability peaks as evidences by flourising cumulus fields early this aftrenoon.

Northwesterly winds relax after sunset as diurnal instability fades off bringing an end to any low end shower chances. Forecast lows drop to the middle 40s near the Ohio River to the upper 30s north of I-70.

SHORT TERM /SATURDAY THROUGH SATURDAY NIGHT/
High pressure continues to build in from the northwest Saturday through Saturday night. Northwesterly/northerly flow keeps cool, dry air over the Ohio Valley and temperatures remain below seasonal averages for late May. Forecast highs on Saturday are in the 60s for most locations under fair weather cumulus. Temperatures drop into the 40s on Saturday night despite some lingering cloud cover possibly remaining. A few locations east of Columbus have a chance of dropping into the 30s if skies clear.

LONG TERM /SUNDAY THROUGH THURSDAY/
The long term period will be characterized by below normal temps and periodic chances for showers early to middle of next week, with the overall potential for hazardous weather looking quite low during this stretch.

For Sunday through early next week, the large-scale negative height anomalies in the NE CONUS will stretch back to the W through the Great Lakes as quasi-zonal flow becomes established from the mid MS Rvr Vly through the srn OH Vly. Dry air will remain entrenched across the local area through Sunday within continued NE LL flow, even as a weak embedded system tracks through the srn OH Vly, providing some increased cloud cover locally. As S/W energy pivots to the SE from the upper Midwest into the south-central plains by Monday, a weak sfc low should develop in response before slowly migrating to the NE into the nrn TN Vly by Monday night. The latitudinal placement of this low track will ultimately dictate which areas remain dry and which ones will be susceptible to episodic pcpn chances Monday night through Tuesday, with the latest trends suggesting a slightly more well-defined system, which would bring higher coverage of SHRA into parts of the ILN FA by Tuesday.

The subtle shift to a more well-defined system emerging into the OH Vly for Tuesday of next week should effectively shunt the dry air entrenched over the region this weekend off to the NE, allowing for a return of rain chances late Monday through Tuesday, potentially lingering in at least some fashion into midweek. The likely track of the sfc low looks to be such that severe weather is not a big concern locally at this juncture given the lack of instby and disconnection from the richer LL moisture, but another bout of rain should become increasingly likely by Tuesday as this slow-moving system crawls NE through the region.

The overall large-scale pattern for midweek and beyond will likely evolve into one or more closed/cutoff lows somewhere across the upper Midwest into the Great Lakes, with negative height anomalies favored to persist, as a whole, in the region through the entirety of the long term period. This setup would most certainly keep the below normal temps going through all of next workweek, and may even keep periodic rain chances in the fcst into (and beyond) midweek given the pattern. However, the details of this still remain uncertain at these time ranges, but confidence is high in the continued absence of above normal temps through the long term period.

AVIATION /18Z FRIDAY THROUGH WEDNESDAY/
VFR cumulus peaks this afternoon before scattering this evening.
Some isolated shower activity may occur during peak heating today but coverage should remain minimal. VFR cumulus may redevelop once again on Saturday afternoon.

Northwesterly winds around 15 knots persist this afternoon.
Northwesterly winds slowly relax overnight before picking back up to 10-15 knots on Saturday.

OUTLOOK.. MVFR conditions possible Tuesday.

ILN WATCHES/WARNINGS/ADVISORIES
OH...None.
KY...None.
IN...None.