Ryan Argenti

The National Weather Service confirmed that an EF2 tornado with estimated peak winds of 120 mph struck eastern York County, Pennsylvania, on August 20, 2026. The tornado remained on the ground for about two minutes, traveled 1.07 miles, and reached a maximum width of 100 yards. Eastern York High School sustained major roof and auditorium damage, while nearby homes, trees, and crops were also affected. One person was injured, but no deaths were reported. The storm was considered unusual for the region, which had not recorded an EF2 tornado since 2019.

Scattered showers are expected late Wednesday night through Thursday morning, followed by additional showers and isolated thunderstorms in the afternoon. Heavy downpours could cause localized flooding, while isolated strong to severe storms may bring gusty winds, prompting WGAL to designate Thursday an impact day. Friday should be dry and sunny, but the weekend may bring more showers and thunderstorms before cooler, less humid weather arrives next week.

Partly sunny, humid conditions and isolated showers are expected through Friday evening, with temperatures falling into the upper 60s overnight. Saturday is forecast to be mostly sunny, drier and more comfortable, with highs near 84 degrees. Scattered showers and thunderstorms are expected Sunday into Monday, with higher humidity and a risk of heavy rain and localized flash flooding, though severe weather is not currently anticipated. Lower humidity is expected Tuesday before warmer, more humid conditions return later in the week.

Partly sunny conditions and temperatures in the low-to-mid 80s are expected Friday, followed by a more comfortable and mostly sunny Saturday with highs around 84 degrees. Scattered showers and thunderstorms are forecast from Sunday morning through early Monday, with possible heavy rain but no current severe-weather outlook. Humidity will decrease Tuesday before returning Wednesday, while temperatures remain in the low-to-mid 80s for the following week.

A cold front may bring an isolated thunderstorm Thursday evening, while high-level wildfire smoke lingers and humidity gradually decreases. Friday will be partly to mostly cloudy with comfortable humidity and a slight shower chance, while Saturday is expected to be mostly sunny and pleasant. Humidity and storm chances increase Sunday into Monday, followed by lower humidity Tuesday and renewed stickiness and rain chances later in the week.

A warm, seasonably humid day is expected with partly sunny skies and a slim chance of an isolated thunderstorm as a front passes. High-level wildfire smoke will linger, while partly cloudy conditions may allow limited viewing of the Perseid meteor shower. Humidity will ease Friday and Saturday, with Saturday forecast to be mostly sunny and pleasant. Humidity and storm chances will increase Sunday through Monday, followed by lower humidity Tuesday and renewed moisture and rain chances later in the week.

Warm and humid conditions will continue through Thursday, with isolated showers and thunderstorms possible late Wednesday and Thursday as a cold front passes. Humidity will decrease Friday and Saturday, bringing partly sunny and more pleasant weather, before returning Sunday with scattered thunderstorms possible. Wildfire smoke will create some haze but is not expected to affect surface air quality, and cloud cover may limit viewing of the Perseid meteor shower.

Showers and thunderstorms are expected to continue overnight into early Monday, with muggy conditions and possible patchy fog. A cold front may bring isolated afternoon storms before skies brighten, while temperatures reach about 84 degrees. The week will feature alternating sun, clouds, rain and storm chances, with heat and humidity building to around 90 degrees from Friday through the weekend before another front brings additional storms and more seasonable, drier conditions next Tuesday.

A slow-moving cold front is expected to bring afternoon and evening showers and thunderstorms to much of the region Sunday, with isolated risks of damaging wind gusts and flash flooding. Scattered storms may continue Monday before temperatures rise from the mid-80s Tuesday to around 90 degrees from Friday through the weekend, accompanied by increasing heat and humidity and daily chances for pop-up showers or thunderstorms.

Mostly dry conditions are expected through Saturday, with increasing clouds, mid-80s temperatures and high humidity. Scattered showers and thunderstorms may develop Sunday afternoon and continue into Monday as a cold front moves east. Partly sunny conditions return Tuesday, followed by hotter and more humid weather from Wednesday onward, with possible daily thunderstorms and highs near 90 degrees by Friday.

Showers and thunderstorms are expected to taper overnight, with partial clearing, muggy conditions and possible fog. Scattered storms may develop Monday, while Tuesday brings the greatest risk of strong to severe thunderstorms across the region, including damaging winds, hail and heavy rain. Southern Franklin, Adams, York and Lancaster counties are under a Slight Risk, while surrounding areas face a lower Marginal Risk. Storm chances linger Wednesday before drier, seasonable weather arrives Thursday and Friday, with additional storm potential returning Sunday.

Severe thunderstorms pose an enhanced risk across the Susquehanna Valley through the evening, with damaging winds as the primary threat along with heavy rain, flash flooding, hail, and possible tornadoes. Watches for severe storms, tornadoes, and flooding remain in effect until late evening. Wildfire smoke will gradually improve as a cold front approaches. Storm activity is expected to diminish by late evening, with clearing skies and lower humidity overnight. Improved air quality and comfortable temperatures are forecast for Sunday and Monday, while another round of potentially severe storms may arrive Tuesday with a passing cold front.

Thick wildfire smoke drifting from Canada triggered a Code Purple air‑quality alert across Pennsylvania, creating hazardous conditions and reducing visibility through Friday night. Air quality is expected to improve gradually Saturday as a storm system moves in, though a Code Orange alert remains in effect during the morning. The Susquehanna Valley faces an enhanced risk of severe thunderstorms Saturday afternoon and evening, with damaging winds and flash flooding possible. Conditions ease Sunday as a cold front brings lower humidity and more typical summer air quality, followed by seasonable weather into the next week.

Pennsylvania faces harmful to hazardous air quality as wildfire smoke triggers a Code Purple alert statewide, with the worst conditions continuing into Saturday morning. A Code Orange alert follows on Saturday as smoke gradually improves later in the day. Forecasts call for highs near 90 degrees today with lingering haze overnight, followed by showers and thunderstorms Saturday as a warm front and later a cold front move through, bringing risks of damaging winds, heavy rain, and isolated severe weather. Conditions improve Sunday as high pressure arrives, lowering humidity and restoring moderate air quality, with seasonable temperatures and only occasional storm chances into midweek.

South‑central Pennsylvania will experience a Code Purple air quality alert on Friday as dense smoke from wildfires in southern Ontario and northern Minnesota settles near the surface, creating very unhealthy conditions. The Pennsylvania Department of Environmental Protection warns that all individuals may experience harmful effects such as coughing and breathing difficulties, recommending limited outdoor activity and the use of recirculated air conditioning. WGAL’s Storm Team has declared an Alert Day due to the potential for life‑threatening conditions. Air quality may improve over the weekend with anticipated scattered showers and thunderstorms.

Smoke from wildfires in Ontario and Minnesota is producing hazardous air quality across Pennsylvania, prompting Code Red and Code Purple alerts. Conditions are expected to worsen Friday before improving as winds shift on Saturday. Storm chances increase Saturday with a slight risk for severe weather, including damaging winds and heavy rain. Humidity decreases Sunday, with seasonable temperatures and additional storm chances early next week.

Wildfire smoke from southern Ontario and northern Minnesota is causing unhealthy air quality across Pennsylvania, prompting a Code Red alert with widespread haze and reduced visibility. High temperatures in the low 90s will feel hotter due to humidity. Conditions may improve slightly Friday, though a Code Orange alert could be raised to Code Red. Scattered thunderstorms and a slight risk of severe weather are expected Saturday as fronts move through, with humidity easing after a cold front passes Sunday. Seasonable and more comfortable weather is expected early next week, followed by another chance of storms Tuesday into Wednesday.

A confirmed downburst in Mannheim Township caused significant tree damage, while otherwise calm conditions give way to a heat wave beginning Tuesday. High temperatures rise into the 90s with Wednesday marking the peak, potentially reaching the upper 90s and producing heat index values near or above 100 degrees. Increasing humidity midweek raises the risk of heat-related illnesses, and residents are urged to stay cool and hydrated. Rain chances remain low until possible thunderstorms return Friday and Saturday.

A National Weather Service survey confirmed that a downburst with peak winds of 85 mph caused widespread straight-line wind damage in Manheim Township, Lancaster County, on July 4, 2026. The wind event followed a severe thunderstorm segment that produced a 1.4‑mile damage path, uprooting trees, damaging homes and vehicles, and leading to no injuries or fatalities. Survey teams identified the most severe impacts along Kissel Hill Road, Long Farm Road, Apple Road, and Ruth Ridge Drive, with damage intensity decreasing farther east. Local emergency officials assisted in the assessment, and the findings were released publicly on July 12.

Temperatures rise into the upper 80s on Monday before a stretch of 90-degree days begins Tuesday, potentially forming a heatwave. Humidity increases midweek, pushing Wednesday’s heat index near 100 degrees and raising risks for heat-related illnesses. Conditions remain hot through Friday, though humidity eases slightly, with low rain chances until thunderstorms become possible late in the week.

Scattered thunderstorms are expected across the Susquehanna Valley through early evening, with isolated damaging winds and brief heavy rainfall possible. Conditions turn partly cloudy overnight with areas of fog. Saturday may see an isolated shower or storm as a cold front passes, while Sunday becomes drier with lower humidity. Temperatures rise into the 90s next week with the potential for a heatwave and minimal rain chances until late week.

A flash flood warning was issued for central Cumberland County and northwestern York County after Doppler radar detected heavy rain producing 1.5 to 2 inches with up to 2 more expected. The National Weather Service warned of flooding in small waterways, urban areas and low-lying locations, naming multiple communities at risk. Residents were urged to avoid flooded roads and expect conditions to improve later in the evening as storms move out.

Scattered thunderstorms are expected in the Susquehanna Valley between 1 p.m. and 8 p.m., with a low risk of severe weather but potential for damaging winds and brief heavy rain that could cause isolated flooding. Conditions turn partly cloudy tonight with fog possible. Saturday may bring an isolated shower or storm as a cold front passes, while Sunday will be drier with lower humidity. Early next week will be warm, and a heatwave is likely from Tuesday through Thursday with highs in the low-to-mid 90s and limited rain chances.

A flash flood warning was issued for parts of Adams, Lancaster, and York counties as storms produced heavy rainfall with up to two additional inches expected. The WGAL Storm Team declared an Alert Day due to potentially life‑threatening conditions. Flooding risks include small creeks, urban areas, roads, and low‑lying locations. Further scattered storms are possible through the evening before conditions improve overnight, with additional storm chances returning Friday.

Scattered showers and thunderstorms are expected across the Susquehanna Valley between noon and 8 p.m., with isolated damaging wind gusts and heavy rainfall that may cause localized flash flooding. A Flood Watch remains in effect for several counties until midnight. Storms taper off tonight with patchy fog possible. Another round of showers and storms is likely Friday as a cold front approaches, though severe risk is low. Weekend conditions trend drier with only isolated storm chances Saturday. Temperatures rise into the low 90s next week with the potential for a heatwave.

Scattered showers and thunderstorms are expected Thursday afternoon and evening across several south-central Pennsylvania counties, with a marginal risk of severe weather including strong winds and heavy rain. Additional showers and storms are possible Friday as a cold front moves through, followed by a drier weekend with isolated storms. Temperatures will rise into the low 90s early next week, potentially producing a heatwave before cooling slightly later in the week.

Partly to mostly sunny conditions develop as high pressure builds over the region, with highs near the mid-80s and rising humidity by evening. Showers and scattered thunderstorms are expected Thursday afternoon and evening, bringing brief heavy rain and isolated strong winds, mainly in Lebanon, Lancaster, York, Adams, and parts of Dauphin and Franklin counties. Another round of storms may form Friday with a passing cold front. The weekend turns mostly dry but still carries slight storm chances. Temperatures trend upward next week, with highs rising into the low 90s and the potential for a heatwave.

Slow-moving thunderstorms are expected to bring heavy rainfall across the Susquehanna Valley, with a Flood Watch in effect until Monday evening. Rainfall rates may exceed two inches per hour, raising the risk of flash flooding in low-lying and urban areas. The Storm Prediction Center has placed the region under a Slight Risk for severe storms, including damaging winds and hail. Conditions are expected to remain unsettled through Tuesday with cooler temperatures, before trending drier later in the week, though additional showers and storms remain possible.

Hot and humid conditions continue into the July 4th weekend, with extreme heat warnings and advisories across the Susquehanna Valley. Temperatures are expected to approach or exceed record levels, with heat indices potentially reaching 105-110 degrees. Scattered thunderstorms are possible Saturday and Sunday, bringing risks of damaging winds and heavy rain, and localized flash flooding on Sunday. The heat wave will ease early next week as temperatures return to the 80s with increased chances of showers and thunderstorms.

Extreme heat across South-Central Pennsylvania, with temperatures and heat indices near or above 100 degrees, has led to several July Fourth and America 250 events being canceled or postponed. Dauphin County’s ice cream social was moved to July 5, Lancaster Central Market will close early on July 3 and 4, and West York Borough canceled its July 3 celebration with the possibility of rescheduling in August.

Extreme heat is forecast across the Susquehanna Valley, with an Extreme Heat Warning in effect through Friday and extended into Saturday for several counties. Heat indices are expected to reach 105 to 110 degrees, with temperatures near or above 100 and little overnight relief. Isolated thunderstorms are possible Friday and around Independence Day, with a greater chance of storms on Sunday as heat begins to ease. Early the following week will return to more typical summer conditions with highs in the 80s and scattered storms. The region continues to experience significant dryness after one of the driest Junes on record.

Extreme heat warnings are in effect through Friday across the Susquehanna Valley, where heat index values are expected to reach 105 to 110 degrees. High temperatures near or above 100 degrees will combine with high humidity, with little relief overnight as lows stay in the 70s. Independence Day will bring mid‑90s temperatures and a heat advisory, along with the possibility of isolated storms capable of heavy rain or damaging winds. Conditions ease slightly Sunday as highs drop to the low 90s, and early next week returns to typical summer weather with upper‑80s temperatures and scattered thunderstorms. Ongoing dry conditions remain a concern, with June ranking as the third driest on record and yearly rainfall more than six inches below average.

Extreme heat is forecast across the Susquehanna Valley through Friday, with heat index values reaching 105 to 110 degrees and little overnight relief. Temperatures near or above records are expected, and an Extreme Heat Warning remains in effect. Independence Day will also be dangerously hot with a Heat Advisory and potential afternoon storms. Scattered storms may develop Sunday before temperatures ease next week, though dry conditions continue to be a concern after one of the driest Junes on record.

A prolonged and potentially dangerous heat wave is expected across Pennsylvania, with temperatures in the upper 90s and heat index values surpassing 100 degrees from midweek through Friday. Humidity will reach tropical levels, likely prompting heat advisories or extreme heat warnings. Limited nighttime cooling, muggy conditions, and patchy fog are anticipated. Independence Day will also be hot with possible thunderstorms, while modest relief arrives Sunday as temperatures fall into the upper 80s alongside increased chances for scattered showers.