A slow-moving surface warm front stationed across western Pennsylvania allowed for slow-moving showers and thunderstorms to form across southwestern Pennsylvania in an environment of anomalously moist air with long, skinny CAPE and enhanced low-level shear. Showers and thunderstorms across southwestern Pennsylvania initially formed during the early afternoon hours and continued into the evening…
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS CTP wrote it up.
A slow-moving surface warm front stationed across western Pennsylvania allowed for slow-moving showers and thunderstorms to form across southwestern Pennsylvania in an environment of anomalously moist air with long, skinny CAPE and enhanced low-level shear. Showers and thunderstorms across southwestern Pennsylvania initially formed during the early afternoon hours and continued into the evening hours, producing numerous instances of flash flooding and closing roadways across Cambria, Blair, Bedford, and Fulton counties. The aforementioned low-level shear and instability allowed for a brief EF1 tornado to occur across southeastern Bedford County, on York Road. The maximum wind speed of the York Road Tornado was 95 mph, with a 1.1-mile path and a width of 175 yards.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS State College, PA wrote its last area forecast discussion before the first event at Jun 17, 11:49 AM EST, 2 hours 2 minutes earlier.
Area Forecast Discussion National Weather Service State College PA 1249 PM EDT Tue Jun 17 2025 .SYNOPSIS... * Scattered to numerous instances of flash flooding possible this afternoon into early tonight across southwestern and south central PA * Strong to potentially severe thunderstorms possible Thursday afternoon * First significant heat wave to the season expected Sunday into early week with Major Heat Risk forecast (level 3 of 4) && .NEAR TERM /THROUGH TONIGHT/... Spotty light rain showers are moving from west to east early this morning across central PA. A solid overcast, sub-1500ft stratus deck entrenched along and east of the Allegheny Front combined with ridge shrouding fog/mist and drizzle pockets will make for a rather dreary and damp start to the day with temps in the 60-65F range. An SPS may be issued to highlight low visibility in higher terrain based current airport and RWIS observational data. The main focus today is on the potential for numerous flash floods with significant events possible. An extremely moist near-record PW environment for mid June will support a moderate risk excessive rainfall outlook (level 3 out of 4 ERO) which [since 2009] has only occurred 5-6 days a year or less than 2% of days annually. Very moist southwesterly return flow from the Gulf - pinched between Bermuda-type ridge off the southeast coast and digging trough tracking east from the mid Mississippi Valley - will interact with multiple mid level shortwave impulses and a wavering sfc front to produce enhanced isentropic ascent supportive of heavy convective rainfall this afternoon into early tonight. The high-res CAMs are in good agreement in targeting parts of southwest/southcentral PA with increasing coverage of heavy t-storm downpours during peak afternoon/evening heating. Although storm motions are expected to be somewhat progressive to the northeast based on 20-30kt mean wind, the magnitude of deep layer moisture available to tap will be close to/if not at record levels for mid June with PWs approaching 2 inches. The near-record PW and deep warm cloud depths of 13000-14000 ft will support hourly rainfall that has a chance (20-40%) of exceeding 2"/hr, with sub-hourly rain rates of 3-4"/hr possible. Despite a lack of organization, repeating rounds of thunderstorms with these intense rain rates could produce stripes of rainfall exceeding 3" (50-60%) and locally 5" (20-30%) with the greatest potential for the higher accumulations suggested by both HREF and REFS guidance occurring over CPA. With FFG extremely compromised and reduced to 0.75" or less/1hr in some areas, WPC has upgraded to a MDT risk for excessive rainfall. Given the strong +RA signal and background antecedent conditions, a flood watch was an easy decision to highlight and message what could be a potential higher-end flooding day in CPA. In terms of hydrology, smaller streams and creeks are the most vulnerable and most likely to experience flooding. No flooding is forecast on the larger rivers at this time, but some could be affected. After somewhat of a lull in rain coverage/intensity after 03Z or 11pm, high-res ensemble guidance favors an uptick on shower activity through early Wednesday morning across the western Alleghenies which appears tied to a trailing shortwave impulse. && .SHORT TERM /WEDNESDAY THROUGH FRIDAY NIGHT/... Another midlevel shortwave trough is fcst to move through the central Appalachians by 00Z Thu along the northwest periphery of the upper level ridge off the Carolina coast. Rather strong heating of a moist environment will result in moderate to strong buoyancy Wednesday afternoon particularly across southeast PA. Scattered diurnal storm development will be possible with guidance generally depicting a belt of 35-45 kt midlevel flow across the region. This modest flow enhancement could result in some storm organization, with large PW and steepened low-level lapse rates resulting in a threat for at least isolated damaging wind. The D2 MRGL risk SWO clips the eastern portion of the lower Susquehanna Valley. By Thursday, a seasonably deep 500mb trough will move across the Great Lakes into the Northeast CONUS. With rich moisture already in place, it won't take much heating to drive thunderstorm development Thursday afternoon ahead of and along an approaching cold front. Timing of the cold front still varies somewhat which adds an element of uncertainty to the severe storm potential. That being said, SPC transitioned the D4 15% severe prob to a D3 SLGT risk SWO which essentially covers the southeastern 1/2 of CWA. Higher confidence outcome is the front clears the area Thursday night which will bring drier/less humid conditions to close out the week an officially kick of astronomical summer (see climate section). && .LONG TERM /SATURDAY THROUGH MONDAY/... As upper ridging builds in, a capping inversion will limit any shower/thunderstorm chances to sub 20 pct for Sat-Mon. By Sunday, highs in the low to mid 90s are becoming more likely as a very strong ridge of high pressure with 500mb heights approaching 600dm builds overhead. NAEFS guidance depicts a ~72 hour period of anomalous 500mb heights, 700mb temperatures, and 850/925mb specific humidity values (>99th percentile for this time of year). If such a forecast materializes, we could be looking at a several day stretch of extreme heat and humidity across the region. Monday looks to be the hottest day of the stretch, with highs currently forecast in the 90s for most of the area. Dewpoints in the mid 70s would push heat index values over 100F for most locations east of I-99 and south of I-80, with values approaching 105+ in the Lower Susquehanna Valley. Although this forecast is still several days out and uncertainty remains, the fact that we have been in a stretch of relatively cool conditions means the quick switch into significant heat and humidity could exacerbate the risk for heat-related impacts. In addition to warm afternoon temperatures and heat index values, overnight lows will provide little to no relief from the heat. With the expected stretch of hot and humid conditions, those with heightened susceptibility to heat, such as young children, older adults, people with chronic medical conditions, and pregnant women, should prepare to limit time outdoors, wear light clothing, and drink plenty of water later this weekend and early next week. && .AVIATION /18Z TUESDAY THROUGH SUNDAY/... 12Z TAFS sent. Not much to add, conditions at 7 AM about the same as the last few days. Showers limited on coverage the last few hours. Earlier discussion below. 06Z TAFS sent. Main issue today into early Wednesday will be low CIGS. Visibilities will low at times, mainly at night and in and near showers and storms. Chance for thunder will be a bit limited, unless low clouds can break, and the airmass heated by the strong mid June sun this aft. No real change in the coming days. Outlook... Wed...VFR/MVFR with showers and thunderstorms possible, as warm front pulls north of area. Thu...Predominantly VFR, although strong PM t-storms are possible with a cold frontal passage. Fri-Sat...Predominantly VFR, with a slight chance of a rain shower north. && .CLIMATE... Astronomical Summer (solstice) officially arrives on Friday, June 20, at 10:42 p.m. && .CTP WATCHES/WARNINGS/ADVISORIES... Flood Watch until 10 PM EDT this evening for PAZ010>012- 017>019-024>027-033>036-045. && SYNOPSIS...Steinbugl NEAR TERM...Steinbugl SHORT TERM...Steinbugl LONG TERM...Steinbugl/Colbert AVIATION...Martin CLIMATE...Steinbugl
Hazardous Weather Outlook National Weather Service State College PA 222 PM EDT Tue Jun 17 2025 PAZ004>006-037-041-181830- Warren-McKean-Potter-Tioga-Northern Lycoming- 222 PM EDT Tue Jun 17 2025 This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. Isolated to scattered flash floods are possible this afternoon into early tonight. Most flooding will be localized with the most vulnerable locations being urban areas, roads, and small streams. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. A few strong thunderstorms with gusty winds are possible Thursday afternoon. The first heat wave of the season is expected Sunday into early next week. The risk of heat-related illnesses is likely elevated given limited acclimation. Heat impacts are likely in some health systems, heat sensitive industries, and infrastructure. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. PAZ010>012-017-018-024-033-181830- Elk-Cameron-Northern Clinton-Clearfield-Northern Centre-Cambria- Somerset- 222 PM EDT Tue Jun 17 2025 ...FLOOD WATCH IN EFFECT UNTIL 10 PM EDT THIS EVENING... This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov/StateCollege on the internet for more information about the following hazards. Flood Watch. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. A few strong thunderstorms with gusty winds are possible Thursday afternoon. The first heat wave of the season is expected Sunday into early next week. The risk of heat-related illnesses is likely elevated given limited acclimation. Heat impacts are likely in some health systems, heat sensitive industries, and infrastructure. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ042-046-051>053-057>059-064>066-181830- Sullivan-Southern Lycoming-Montour-Northumberland-Columbia-Dauphin- Schuylkill-Lebanon-Adams-York-Lancaster- 222 PM EDT Tue Jun 17 2025 This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. Isolated to scattered flash floods are possible this afternoon into early tonight. Most flooding will be localized with the most vulnerable locations being urban areas, roads, and small streams. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. A few strong to potentially severe thunderstorms with damaging winds are possible Thursday afternoon and evening. The first heat wave of the season is expected Sunday into early next week. The risk of heat-related illnesses is likely elevated given limited acclimation. Heat impacts are likely in some health systems, heat sensitive industries, and infrastructure. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ019-025>028-034>036-045-049-050-056-063-181830- Southern Centre-Blair-Huntingdon-Mifflin-Juniata-Bedford-Fulton- Franklin-Southern Clinton-Union-Snyder-Perry-Cumberland- 222 PM EDT Tue Jun 17 2025 ...FLOOD WATCH IN EFFECT UNTIL 10 PM EDT THIS EVENING... This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov/StateCollege on the internet for more information about the following hazards. Flood Watch. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. A few strong to potentially severe thunderstorms with damaging winds are possible Thursday afternoon and evening. The first heat wave of the season is expected Sunday into early next week. The risk of heat-related illnesses is likely elevated given limited acclimation. Heat impacts are likely in some health systems, heat sensitive industries, and infrastructure. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather.
The State College radar (KCCX), 78 km away, was scanning. The volume nearest the first event began at 18:49 UTC.
12 flash flood, 1 tornado, 1 flood. Local standard time, as filed.
Flash flooding led to water across roadways in Ebensburg, with more heavy rain incoming.
The basement of a home on Lakeview Road filled with water and water was approaching first floor of the home.
Flash flooding was observed on Cardiff Road near Railroad Street on the north side of Nanty-Glo.
Flash flooding resulted in four feet of water across the intersection of South Center Street and Lakeview Road in Ebensburg, closing the intersection.
Flash flooding led to water across roadways in southern Richland Township.
Flash flooding led to water across the intersection of Plank Road and Route 22 between Duncansville and Hollidaysburg.
Flash flooding was observed at the intersection of Locke Mountain Road and Reservoir Road in Frankstown Township.
The York Road Tornado (EF1) occurred in southeastern Bedford County during the evening hours of June 17, 2025 with estimated maximum wind speeds at 95 mph, with a path width of 175 yards and a path length of 1.1 miles. The tornado began just northeast of the intersection of Robinsonville Road and Sideling Hill Creek Road, causing tree damage as it continued to parallel Sideling Hill Creek Road. Multiple softwood and hardwood trees were snapped and uprooted along both sides of upper York Road, with power line poles and wires being knocked down near a residence on upper York Road. There were also multiple uprooted softwood and hardwood trees along lower York Road. The tornado first crossed upper York Road and then crossed Shreveport Road northeast of the intersection with York Road. The tornado then crossed the East Branch of Sideling Hill Creek, producing additional tree damage before dissipating west of Browning Road. No injuries or deaths were reported due to the York Road Tornado.
Standing water was observed alongside roads in the vicinity of Elton to the east of the University of Pittsburgh - Johnstown campus.
Flash flooding was reported at the confluence of the east branch and west branch of Sideling Hill Creek onto Sideling Hill Creek Road.
Flash flooding was reported along the 6000 block of Great Cove Road south of Needmore.
Heavy rain and flash flooding caused a rock slide near Town Hill.
Flash flooding led to water across the roadway on South Imler Valley Road at the intersection with Sarah Furnace Road in Imler.
Flash flooding led to water across the roadway on South Imler Valley Road near the intersection of Heritage Road near Osterburg.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2025Every state in 2025This day in weather historyThe tornado archive for Pennsylvania, 2025Warnings in Pennsylvania, June 2025
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1266657, 1266658, 1266659, 1266661, 1266662, 1266665, 1266667, 1255828, 1266663, 1266673, 1266676, 1266678, 1266679, 1266680.