Weather Warnings for Pennsylvania

Issued by the National Weather Service

Current watches, warnings, and advisories for Pennsylvania
Alerts Updated: February 21, 2026, 9:13 pm  UTC


Flood Warning issued February 21 at 4:13PM EST until February 21 at 9:00PM EST by NWS Pittsburgh PA

Summary: * WHAT...Flooding caused by an ice jam continues. * WHERE...Northern Armstrong County in west central Pennsylvania, near the Wattersonville area and potentially downriver to Lock number 8 along the Allegheny River. * WHEN...Until 900 PM EST. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. Depending on ice behavior, any release of the ice jam could result in sudden rises of water, leading to a rapid flooding situation. * ADDITIONAL DETAILS... - At 357 PM EST, Emergency management reported an ice jam near the warned area. Flooding is occurring at campgrounds along the Allegheny riverbank, and additional flooding is possible if the ice jam breaks. - Some locations that will experience flooding include...the Wattersonville area and potentially downriver to Lock number 8 along the Allegheny River. - http://www.weather.gov/safety/flood
Severity:  Severe    Effective:  February 21, 2026, 4:13 pm      Expires:  February 21, 2026, 9:00 pm
Area:  Armstrong, PA


Winter Storm Warning issued February 21 at 1:54PM EST until February 23 at 6:00PM EST by NWS Mount Holly NJ

Summary: * WHAT...Heavy snow expected. Total snow accumulations between 8 and 16 inches. Winds gusting as high as 45 mph. * WHERE...Berks, Lehigh, Northampton, Carbon, and Monroe Counties. * WHEN...From 7 AM Sunday to 6 PM EST Monday. * IMPACTS...Travel could be very difficult to impossible. Some blowing snow is likely which could lead to reduced visibility. The hazardous conditions could impact the Monday morning and evening commutes. Gusty winds could bring down tree branches.
Severity:  Severe    Effective:  February 21, 2026, 1:54 pm      Expires:  February 22, 2026, 3:00 am
Area:  Carbon; Monroe; Berks; Lehigh; Northampton


Winter Storm Warning issued February 21 at 1:54PM EST until February 23 at 6:00PM EST by NWS Mount Holly NJ

Summary: * WHAT...Heavy snow expected. Total snow accumulations between 14 and 18 inches. Winds gusting as high as 40 mph. * WHERE...A portion of southeast Pennsylvania. * WHEN...From 7 AM Sunday to 6 PM EST Monday. * IMPACTS...Travel could be very difficult to impossible. Some blowing snow is likely which could reduce visibility. The hazardous conditions could impact the Monday morning and evening commutes.
Severity:  Severe    Effective:  February 21, 2026, 1:54 pm      Expires:  February 22, 2026, 3:00 am
Area:  Delaware; Philadelphia; Western Chester; Eastern Chester; Western Montgomery; Eastern Montgomery; Upper Bucks; Lower Bucks


Winter Storm Warning issued February 21 at 1:43PM EST until February 23 at 1:00PM EST by NWS State College PA

Summary: ...IMPACTFUL WINTER STORM TO BRING HEAVY SNOWFALL TO CENTRAL PENNSYLVANIA... * WHAT...Heavy snow likely. Total snow accumulations between 5 and 9 inches possible. Winds could gust as high as 35 mph late Sunday night and Monday. * WHERE...Cumberland and Perry Counties. * WHEN...From 5 AM Sunday to 1 PM EST Monday. * IMPACTS...The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Travel could be very difficult. The hazardous conditions could impact the Monday morning commute. * ADDITIONAL DETAILS...Uncertainty remains for where the heaviest snow bands will occur. Snow totals could be higher depending on these localized bands. Snowfall at times could exceed 1 inch per hour rates.
Severity:  Severe    Effective:  February 21, 2026, 1:43 pm      Expires:  February 22, 2026, 6:30 am
Area:  Perry; Cumberland


Winter Storm Watch issued February 21 at 1:43PM EST until February 23 at 1:00PM EST by NWS State College PA

Summary: ...IMPACTFUL WINTER STORM TO BRING HEAVY SNOWFALL TO CENTRAL PENNSYLVANIA... * WHAT...Heavy snow possible. Total snow accumulations between 3 and 8 inches possible. Winds could gust as high as 40 mph. * WHERE...A portion of central Pennsylvania. * WHEN...From late tonight through Monday afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning commute. * ADDITIONAL DETAILS...Uncertainty remains for where the heaviest snow bands will occur. Snow totals could be higher depending on these localized bands.
Severity:  Severe    Effective:  February 21, 2026, 1:43 pm      Expires:  February 22, 2026, 6:30 am
Area:  Clearfield; Northern Centre; Southern Centre; Blair; Huntingdon; Mifflin; Juniata; Bedford; Fulton; Franklin; Sullivan; Union; Snyder; Montour; Northumberland; Columbia


Winter Storm Warning issued February 21 at 1:43PM EST until February 23 at 1:00PM EST by NWS State College PA

Summary: ...IMPACTFUL WINTER STORM TO BRING HEAVY SNOWFALL TO CENTRAL PENNSYLVANIA... * WHAT...Heavy snow likely. Total snow accumulations between 6 and 12 inches possible. Winds could gust as high as 40 mph Sunday night and Monday. * WHERE...A portion of central Pennsylvania. * WHEN...From 5 AM Sunday to 1 PM EST Monday. * IMPACTS...The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning commute. * ADDITIONAL DETAILS...Uncertainty remains for where the heaviest snow bands will occur. Snow totals could be higher depending on these localized bands. Snowfall at times could exceed 1 inch per hour rates.
Severity:  Severe    Effective:  February 21, 2026, 1:43 pm      Expires:  February 22, 2026, 6:30 am
Area:  Dauphin; Schuylkill; Lebanon; Adams; York; Lancaster


Winter Storm Warning issued February 21 at 1:43PM EST until February 24 at 1:00AM EST by NWS State College PA

Summary: ...IMPACTFUL WINTER STORM TO BRING HEAVY SNOWFALL TO CENTRAL PENNSYLVANIA... * WHAT...Heavy snow expected. Total snow accumulations between 6 and 10 inches. Winds gusting as high as 40 mph. * WHERE...Cambria and Somerset Counties. * WHEN...From 1 AM Sunday to 1 AM EST Tuesday. * IMPACTS...The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...Snowfall totals on the ridgetops will be locally higher due to the enhanced upslope snow.
Severity:  Severe    Effective:  February 21, 2026, 1:43 pm      Expires:  February 22, 2026, 6:30 am
Area:  Cambria; Somerset


Winter Storm Watch issued February 21 at 1:11PM EST until February 23 at 7:00PM EST by NWS Binghamton NY

Summary: * WHAT...Heavy snow possible. Total snow accumulations between 6 and 12 inches possible. Winds could gust as high as 35 mph. * WHERE...In New York, Delaware County. In Pennsylvania, Northern Wayne, Susquehanna, and Wyoming Counties. * WHEN...From Sunday afternoon through Monday evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be very difficult. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the Monday morning and evening commutes.
Severity:  Severe    Effective:  February 21, 2026, 1:11 pm      Expires:  February 22, 2026, 1:15 am
Area:  Delaware; Susquehanna; Northern Wayne; Wyoming


Winter Storm Warning issued February 21 at 1:11PM EST until February 23 at 7:00PM EST by NWS Binghamton NY

Summary: * WHAT...Heavy snow expected. Total snow accumulations between 6 and 14 inches. Winds gusting as high as 40 mph. * WHERE...In New York, Sullivan County. In Pennsylvania, Lackawanna, Luzerne, Pike, and Southern Wayne Counties. * WHEN...From 1 PM Sunday to 7 PM EST Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Visibilities may drop below 1/4 mile due to falling and blowing snow. Travel could be very difficult to impossible. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the Monday morning and evening commutes.
Severity:  Severe    Effective:  February 21, 2026, 1:11 pm      Expires:  February 22, 2026, 1:15 am
Area:  Sullivan; Lackawanna; Luzerne; Pike; Southern Wayne


Winter Storm Watch issued February 21 at 1:01PM EST until February 24 at 7:00AM EST by NWS Cleveland OH

Summary: * WHAT...Heavy lake enhanced snow possible. Potential for 6 inches or more of accumulation. * WHERE...Northern Erie and Southern Erie Counties. * WHEN...From Sunday evening through Tuesday morning. * IMPACTS...Travel could be difficult. The hazardous conditions could impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...Light snow will spread into the region Sunday with minimal accumulations, mainly on grassy surfaces. Heavier lake enhanced snow will develop late Sunday evening, with periods of heavy snowfall possible Sunday night into Monday night.
Severity:  Severe    Effective:  February 21, 2026, 1:01 pm      Expires:  February 21, 2026, 11:15 pm
Area:  Northern Erie; Southern Erie


The Winter Storm Watch has been replaced. Please see the latest information from NWS Pittsburgh PA on this developing situation.

Summary: The Winter Storm Watch has been replaced. Please see the latest information from NWS Pittsburgh PA on this developing situation.
Severity:  Severe    Effective:  February 21, 2026, 12:00 pm      Expires:  February 21, 2026, 12:15 pm
Area:  Westmoreland Ridges; Fayette Ridges; Ridges of Eastern Monongalia and Northwestern Preston; Preston; Eastern Preston; Western Tucker; Eastern Tucker


Winter Weather Advisory issued February 21 at 12:00PM EST until February 24 at 1:00AM EST by NWS Pittsburgh PA

Summary: * WHAT...Snow expected. Total snow accumulations between 2 and 5 inches. * WHERE...Portions of western Pennsylvania and northern West Virginia. * WHEN...From 1 AM Sunday to 1 AM EST Tuesday. * IMPACTS...Travel could be very difficult. The hazardous conditions will impact the Monday morning and evening commutes.
Severity:  Moderate    Effective:  February 21, 2026, 12:00 pm      Expires:  February 21, 2026, 10:00 pm
Area:  Jefferson; Westmoreland; Fayette; Indiana; Marion; Monongalia


Winter Storm Warning issued February 21 at 12:00PM EST until February 24 at 1:00AM EST by NWS Pittsburgh PA

Summary: * WHAT...Heavy snow expected. Total snow accumulations between 5 and 10 inches. * WHERE...Higher Elevations of Indiana County. * WHEN...From 1 AM Sunday to 1 AM EST Tuesday. * IMPACTS...Travel could be very difficult. The hazardous conditions will impact the Monday morning and evening commutes.
Severity:  Severe    Effective:  February 21, 2026, 12:00 pm      Expires:  February 21, 2026, 10:00 pm
Area:  Higher Elevations of Indiana


Winter Storm Warning issued February 21 at 12:00PM EST until February 24 at 1:00AM EST by NWS Pittsburgh PA

Summary: * WHAT...Heavy snow expected. Total snow accumulations between 6 and 12 inches, with locally higher amounts possible on the highest elevations. Winds gusting as high as 35 mph. * WHERE...Portions of southwest Pennsylvania and northern West Virginia. * WHEN...From 1 AM Sunday to 1 AM EST Tuesday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions will impact the Monday morning and evening commutes.
Severity:  Severe    Effective:  February 21, 2026, 12:00 pm      Expires:  February 21, 2026, 10:00 pm
Area:  Westmoreland Ridges; Fayette Ridges; Ridges of Eastern Monongalia and Northwestern Preston; Preston; Eastern Preston; Western Tucker; Eastern Tucker


Flood Advisory issued February 21 at 6:55AM EST until February 22 at 7:00AM EST by NWS Pittsburgh PA

Summary: ...The Flood Advisory continues for the following rivers in Pennsylvania... Ohio River At Pittsburgh affecting Allegheny County. .Rain and snow melt will continue to result in elevated levels of the Ohio River at Pittsburgh through early Sunday. * WHAT...Flooding caused by rain and snowmelt continues. * WHERE...Ohio River at Pittsburgh. * WHEN...Until Sunday morning. * IMPACTS...At 18.0 feet, Water begins to flow onto the Monongahela Parking Wharf. At 19.0 feet, Water begins to flow onto the North Shore Riverwalk between the stadiums. At 19.5 feet, The Monongahela Parking Wharf is completely flooded. * ADDITIONAL DETAILS... - At 6:45 AM EST Saturday the stage was 18.9 feet. - Bankfull stage is 18.0 feet. - Forecast...The river is expected to rise again to a crest of 18.9 feet this afternoon, before beginning to fall tonight. - Action stage is 18.0 feet. - Flood stage is 22.0 feet. - http://www.weather.gov/safety/flood
Severity:  Minor    Effective:  February 21, 2026, 6:55 am      Expires:  February 21, 2026, 7:00 pm
Area:  Allegheny, PA


The Winter Storm Watch has been replaced. Please see the latest information from NWS Mount Holly NJ on this developing situation.

Summary: The Winter Storm Watch has been replaced. Please see the latest information from NWS Mount Holly NJ on this developing situation.
Severity:  Severe    Effective:  February 21, 2026, 3:27 am      Expires:  February 21, 2026, 3:43 am
Area:  Delaware; Philadelphia; Western Chester; Eastern Chester; Western Montgomery; Eastern Montgomery; Upper Bucks; Lower Bucks