Dense Fog Advisory
URGENT - WEATHER MESSAGE
National Weather Service State College PA
452 AM EDT Tue Aug 18 2026
PAZ004-005-010-181300-
/O.NEW.KCTP.FG.Y.0021.260818T0852Z-260818T1300Z/
Warren-McKean-Elk-
Including the cities of Ridgway, Warren, Bradford, and St. Marys
452 AM EDT Tue Aug 18 2026
...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM EDT THIS MORNING...
* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...Elk, McKean, and Warren Counties.
* WHEN...Until 9 AM EDT this morning.
* IMPACTS...Low visibility could make driving conditions hazardous.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Consider allowing extra time to reach your destination.
If driving, slow down, use your low-beam headlights, and leave plenty
of distance ahead of you.
The latest forecast information can be found on the NWS State College
Facebook page and X @NWSStateCollege, or on the web at
weather.gov/ctp.
&&
$$
Banghoff
Special Weather Statement
Special Weather Statement
National Weather Service Buffalo NY
456 AM EDT Tue Aug 18 2026
NYZ019>021-181300-
Chautauqua-Cattaraugus-Allegany-
Including the cities of Jamestown, Olean, and Wellsville
456 AM EDT Tue Aug 18 2026
Patchy dense fog is impacting the Western Southern Tier,
especially in and near river and creek valleys. The dense fog will
reduce visibility to a quarter mile or less. Motorists should slow
down, maintain plenty of stopping distance ahead of their vehicles,
and use their low beam headlights when encountering fog. The fog
is expected to dissipate between about 8 AM and 9 AM this morning.
$$
Jaszka
Special Weather Statement
National Weather Service Pittsburgh PA
452 AM EDT Tue Aug 18 2026
PAZ007>009-014>016-022-077-181300-
Mercer-Venango-Forest-Butler-Clarion-Jefferson PA-Armstrong-
Indiana-
Including the cities of Sharon, Hermitage, Grove City, Oil City,
Franklin, Tionesta, Butler, Clarion, Punxsutawney, Brookville,
Kittanning, Ford City, and Indiana
452 AM EDT Tue Aug 18 2026
...AREAS OF FOG COULD IMPACT MORNING COMMUTE...
Areas of fog, notably within river valleys, have developed and
could impact the morning commute. Visibilities will be below a
half of a mile at times in the thickest of the fog. Please slow
down and allow extra time to reach your destination.
Conditions are expected to improve shortly after sunrise.
$$
Frazier
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service State College PA
452 AM EDT Tue Aug 18 2026
PAZ004-005-010-190900-
Warren-McKean-Elk-
452 AM EDT Tue Aug 18 2026
...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM EDT THIS MORNING...
This Hazardous Weather Outlook is for central Pennsylvania.
.DAY ONE...Today and tonight.
Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.
Dense Fog Advisory.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
The probability for widespread hazardous weather is low.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
Short Term Forecast
Short Term Forecast
National Weather Service Baltimore MD/Washington DC
414 AM EDT Tue Aug 18 2026
MDZ501-502-509-510-VAZ026>031-036>040-050-051-501-502-507-508-
WVZ050-055-502>504-506-181200-
Extreme Western Allegany-Central and Eastern Allegany-
Western Garrett-Eastern Garrett-Rockingham-Shenandoah-Frederick-
Page-Warren-Clarke-Nelson-Albemarle-Greene-Madison-Rappahannock-
Orange-Culpeper-Northern Fauquier-Southern Fauquier-
Northern Virginia Blue Ridge-Central Virginia Blue Ridge-
Hampshire-Hardy-Eastern Grant-Western Mineral-Eastern Mineral-
Eastern Pendleton-
Including the cities of Frostburg, La Vale, Reynolds,
Westernport, Cumberland, Ellerslie, Brady, Rawlings, McCoole,
Mountain Lake Park, Oakland, Grantsville, Kitzmiller,
Harrisonburg, Linville, Clary, Strasburg, Alonzaville, Woodstock,
Hawkinstown, Mount Clifton, Mount Jackson, Albin, Cedar Grove,
Gainesboro, Winchester, Compton, Fairview, Hamburg, Kimball,
Luray, Rileyville, Ingham, Arco, Bentonville, Buckton,
Cedarville, Front Royal, Glen Echo, Howellsville, Berryville,
Stringtown, Greenfield, Charlottesville, Overton, Shady Grove,
Fordsville, Five Forks, Madison Mills, Twymans Mill, Castleton,
Flint Hill, Hackleys Crossroads, Rock Mills, Washington,
Burr Hill, Everona, Lahore, Madison Run, Nasons, Orange,
Unionville, Cardova, Catalpa, Culpeper, Reva, Stevensburg,
Winston, Rapidan, Airlie, Bethel, Warrenton, Turnbull,
Chester Gap, Skyland, Montebello, Purgitsville, Frenchburg,
Romney, Three Churches, Wapocomo, Points, Springfield, Brake,
Bean Settlement, Fisher, McNeill, Moorefield, Cabins, Kline Gap,
Landes, Masonville, Petersburg, Seymourville, Welton, Piedmont,
Sulphur City, Antioch, Keyser, New Creek, Ridgeville,
Russelldale, Headsville, Fort Ashby, Brandywine, Franklin,
Oak Flat, Ruddle, and Sugar Grove
414 AM EDT Tue Aug 18 2026
.NOW...
Patchy dense fog may occasionally reduce visibility to one quarter
mile this morning. Motorists should exercise extra caution. Reduce
speed, increase time and following distance, and use low beam
headlights when encountering dense fog.
$$
DHOF
