Numerous showers and storms developed ahead of an approaching cold front on June 26, 2024. Some of these storms became severe, producing sporadic wind damage and a few severe hail reports across central Pennsylvania.
Every event with a place to put it; 7 filed by county or forecast zone are drawn at its center, in a lighter ring. 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.
Numerous showers and storms developed ahead of an approaching cold front on June 26, 2024. Some of these storms became severe, producing sporadic wind damage and a few severe hail reports across central Pennsylvania. There was also some flash flooding reported across the northwest mountains in portions of Warren and McKean counties.
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 26, 12:52 PM EST, 20 minutes earlier.
Area Forecast Discussion National Weather Service State College PA 152 PM EDT Wed Jun 26 2024 .SYNOPSIS... *Clusters of thunderstorms accompanied by potentially damaging wind gusts and heavy rainfall are possible later this afternoon through the evening *Partly to mostly sunny and less humid Thursday and Friday *Return of summertime heat+humidity will fuel thunderstorms for the last weekend of June; seasonably cooler & dry start to July && .NEAR TERM /THROUGH TONIGHT/... 1230PM/1630Z: Noteworthy changes since the previous AFD update: 1) WPC upgraded to a SLGT risk ERO (level 2 out of 4) for the northwest portion of central PA. There has been a growing signal for upper level support during the afternoon/evening hours to enhance forcing/lift over this region to boost rainfall intensity, especially from eastern Ohio to northern Pennsylvania. Training of storms in the west-east orientation along diffuse sfc boundary will be capable of upwards of 3 inches per hour rain rates that will more than likely reach or exceed the local FFG. The 26/12Z HREF PMM and 3hr QPF neighborhood probs of >1" & >3" highlight the heavy/excessive rain threat quite well. 2) There was some internal conversations about a possible SWO upgrade from SLGT to ENH, but ultimately consensus was to maintain the SLGT risk. Latest MCD#1426 just issued covering most of north central PA indicates severe storm risk is ramping up given strong heating with growing cu field south of the PA/NY border. The expectation is for storm coverage and intensity to increase mainly after 18Z with scattered damaging gusts most likely within corridor of strongest deep layer mean winds/shear. SPC also reintroduced a 2% tornado probability. Probability of watch issuance...60 percent 1100AM/15Z: 13Z updated SPC SWO expanded the SLGT risk (level 2 out of 5) northward to include all of the CTP forecast area. HWO was updated to reflect this change. We also included damaging winds and heavy rain as potential severe t-storm attributes. Latest hires models depict initial t-storms developing across northwest PA by 4pm/20Z (where 15Z SPC RAP mesoanalysis shows 2000 J/kg of SBCAPE with SBCIN eroded over all but the far southeast zones) before increasing in coverage spreading/evolving to the east and south through 8pm/00Z. QPF signal appears to be focused across north central PA through 00Z then shifting to the southeast half of the CWA between 00-06Z as storms track from NW to SE. Increased POPs during the first half of tonight based on the latest NBM 1 and 3hr PPIs. Max temps still expected to peak between 80-95F this afternoon. Previous Discussion Issued: 456 AM EDT Wed Jun 26 2024 Variable amounts of mainly cirrus and some alto cu (along with a few areas of stratocu across the NW Mtns) and a light southwesterly breeze helped to keep temps notably warmer than Monday night/early Tuesday. Daybreak temps were in a fairly tight range from the mid 60s to low 70s. A cold front stretched from Northern Lower Michigan to near Chicago at sunrise will push southeast and cross the Commonwealth later tonight and early Thursday. Preceding this front, a moderately strong southwesterly flow in the low to mid levels of the atmosphere will transport abundant moisture into the state. There will be more clouds than sunshine today and afternoon highs ranging from near 80 across the highest terrain of the north and west, to the low and mid 90s in the valleys of South-central and Southeastern PA will be about 5 degrees above normal across the Alleghenies and 8 to 10 degrees above normal elsewhere. Weak jet forcing, the lack of a significant llvl boundary and a fairly strong mid level cap (7.5 to 8.5 C at 700 mb) with another isothermal layer between 500-400 MB. Diurnal heating of an increasingly moist/unstable airmass, combined with falling heights ahead of the upstream trough, will result in developing convection later this afternoon. Broader scale, deeper lift and cooling/increasing shear aloft that will help to accentuate shower and thunderstorm development won't arrive until late this afternoon and tonight. This will be the period of greatest areal coverage and intensity of the thunderstorms that could bring locally over one inch of rain in just a 20-30 minute period, and even potentially higher amounts where separate storm cells train over the same location. NAM is the most juiced with respect to 0-1 KM EHI values, which peak in the 1.5 to 2.5 M2/S2 across the Lower-Mid Susq Valley around 00Z Thur. Although SPC did remove their 2 percent TOR risk within the Broader SLGT risk area covering most of PA, the timing and degree of LLVL shear ahead of a potential MCV moving across the Ncent Mtns and Susq's West Branch could lead to some transient supercell structure across the eastern 1/3 to 1/2 of the CWA in the 22Z Wed - 02Z Thu period. Convection will weaken and decrease in coverage from northwest to southeast later tonight, as the upper trough and associated cold front works through the CWA. Lows tonight will vary from the mid 50s over the NW Mtns to near 70F in the larger Metro Areas of Scent and SE PA. && .SHORT TERM /THURSDAY THROUGH FRIDAY NIGHT/... Large scale subsidence and the arrival of much drier (less humid) air behind the exiting cold front will lead to fair and seasonable conditions Thursday. Surface high pressure building over the region should result in fair and cool weather Thu night with valley fog formation likely given air/water spreads 20-30 degrees. Partly cloudy and slightly warmer conditions are likely Friday, as low pwats persist over PA and a return southerly flow develops as the surface high passes off the coast. Latest model data suggests some showers and storms may develop Friday night over the western portion of the forecast area. && .LONG TERM /SATURDAY THROUGH TUESDAY/... Latest medium range guidance is showing an unusual lack of spread among its members, all of which track a surface low north of PA Saturday, with a trailing cold front coming through Sat night into early Sunday. The lack of spread with regards to timing of the front, combined with progged GEFS pwats of +2-3SD, supports an increasing confidence in showers/tsra Saturday. A leading warm front could produce showers/tsra as early as Friday night and a slowing cold front could cause convection to linger into Sunday, mainly over the southeast counties. However, ensemble plumes indicate the most widespread convection should occur Sat afternoon and evening. There is some potential for severe wx Saturday PM, as decent mid level flow overspreads an increasingly moist warm sector. Ensemble plumes currently indicate moderate capes in the 1000 J/kg range and model 0-6km shear is in the 35-40kt range. If the cold front slows enough, severe wx would also be possible across the eastern edge of the forecast area Sunday PM. Latest EPS and GEFS both support fair weather with near to slightly below normal temps and low humidity early next week associated with high pressure building east from the Grt Lks. A seasonably cool and dry start to July! && .AVIATION /18Z WEDNESDAY THROUGH MONDAY/... VFR conditions across Central PA at midday, but thunderstorm chances increase into the evening hours. A few of these storms could be strong to severe with any impacted TAF site likely to see high wind gusts and briefly lowered visibility. Tstms already popping up over NW PA with convective impacts in the vicinity of BFD and occasional impacts/reductions at the airfield through around 21z. Convective activity picks up later in the afternoon for the central mountains stretching from JST- AOO-UNV-IPT. An isolated tstorm is poss in the vicinity through 21-22z, with likely impacts/reductions from tstms moving across the airfields around 00z. Similar setup over the SE where an isolated storm will be possible through 00z near MDT-LNS ahead of better likelihood of impacts after 00z. As the showers and thunderstorms exit to the east during the late evening, guidance indicates the potential for low clouds to stick around across a large portion of the area. The HREF shows the highest probabilities of IFR ceilings (50-60%) at BFD and JST, with lower probabilities of MVFR ceilings at all other sites except MDT and LNS. Outlook... Thu-Fri...Generally VFR. Sat-Sun...Thunderstorm impacts possible. Mon...Generally VFR. && .CTP WATCHES/WARNINGS/ADVISORIES... None. && SYNOPSIS...Steinbugl NEAR TERM...Steinbugl SHORT TERM...Lambert/Fitzgerald/Steinbugl LONG TERM...Fitzgerald/Steinbugl AVIATION...Bauco/Bowen/RXR
Hazardous Weather Outlook National Weather Service State College PA 114 PM EDT Wed Jun 26 2024 PAZ024>028-033>036-056>059-063>066-271715- Cambria-Blair-Huntingdon-Mifflin-Juniata-Somerset-Bedford-Fulton- Franklin-Perry-Dauphin-Schuylkill-Lebanon-Cumberland-Adams-York- Lancaster- 114 PM EDT Wed Jun 26 2024 This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. Clusters of severe thunderstorms with potentially damaging wind gusts 60 mph or greater are possible this afternoon and evening. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ019-045-046-049>053-271715- Southern Centre-Southern Clinton-Southern Lycoming-Union-Snyder- Montour-Northumberland-Columbia- 114 PM EDT Wed Jun 26 2024 ...SEVERE THUNDERSTORM WATCH 464 IN EFFECT UNTIL 9 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. Severe Thunderstorm Watch. Clusters of severe thunderstorms with potentially damaging wind gusts 60 mph or greater are possible this afternoon and evening. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ004>006-010>012-017-018-037-041-042-271715- Warren-McKean-Potter-Elk-Cameron-Northern Clinton-Clearfield- Northern Centre-Tioga-Northern Lycoming-Sullivan- 114 PM EDT Wed Jun 26 2024 ...SEVERE THUNDERSTORM WATCH 464 IN EFFECT UNTIL 9 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. Severe Thunderstorm Watch. Clusters of severe thunderstorms with potentially damaging wind gusts 60 mph or greater are possible this afternoon and evening. Training storms are expected to spread across the northern tier of central PA during the afternoon with the threat of locally heavy rain and possible flooding through the evening. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. MRS
Special Weather Statement
National Weather Service State College PA
124 PM EDT Wed Jun 26 2024
PAZ004-261800-
Warren PA-
124 PM EDT Wed Jun 26 2024
...STRONG THUNDERSTORMS WILL IMPACT CENTRAL WARREN COUNTY THROUGH 200
PM EDT...
At 122 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Spartansburg to north of Tidioute.
Movement was east at 20 mph.
HAZARD...Wind gusts of 50 to 55 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Warren, Youngsville, Warren South, Garland, Kinzua Dam, Grand Valley,
and Starbrick.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
north central Pennsylvania.
&&
LAT...LON 4190 7945 4190 7892 4187 7892 4173 7929
4172 7961 4182 7961
TIME...MOT...LOC 1722Z 250DEG 16KT 4178 7964 4177 7932
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...55 MPH
BanghoffThe Buffalo radar (KBUF), 132 km away, was scanning. The volume nearest the first event began at 18:15 UTC.
34 thunderstorm wind, 7 strong wind, 4 hail, 2 flash flood, 1 flood. Local standard time, as filed.
A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees and wires in Youngsville.
A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees and wires across Warren, leading to power outages in the city.
A severe thunderstorm producing winds estimated near 60 mph knocked down a large tree and wires onto US Route 6, closing both lanes of traffic between Short Street and Phillips Street in Mount Jewett.
A severe thunderstorm produced quarter-sized hail in Mount Jewett.
A thunderstorm producing winds estimated near 40 mph knocked down a tree onto Colorado Road north of Enterprise.
A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees at the intersection of Looker Mountain Trail and Dallas Road northwest of Rixford.
A thunderstorm producing winds estimated near 40 mph knocked down a tree blocking portions of Halsey Road near the intersection with US Route 219.
A severe thunderstorm producing winds estimated near 60 mph knocked down a large tree across State Route 4003 near the intersection of Raven Hill Road northeast of Roulette.
Locally heavy rain associated with thunderstorms produced radar estimated 3-4 inches of rain, causing flash flooding with water running across the roadway at the intersection of South Carver Street and Lexington Avenue on the southeast side of Warren.
Locally heavy rain associated with thunderstorms produced radar estimated 3-4 inches of rainfall, causing flash flooding with water across the roadway at the intersection of Dugout Road and Route 46 and again at Dugout and Crossmire Road near Smethport.
A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees and wires onto the roadway, blocking portions of Tuscarora Path southwest of Saville.
A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees in Morris.
A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees and wires onto Pisgah Road, blocking the roadway south of Alinda.
A thunderstorm producing winds estimated near 40 mph knocked down a tree north of Schlusser.
A thunderstorm producing winds estimated near 40 mph knocked down a tree and multiple smaller limbs on the north end of Carlisle.
A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees and wires in Brockport.
A strong thunderstorm produced nickel-sized for approximately five minutes near California.
A thunderstorm producing winds estimated near 40 mph knocked down a tree north of New Kingstown.
A severe thunderstorm producing winds estimated near 60 mph knocked down trees and wires blocking portions of Creek Road west of Brandtsville.
A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees and wires in Saint Marys.
A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees and wires across US Route 11, blocking both lanes of traffic in Marysville.
A severe thunderstorm producing winds estimated at 60 mph knocked down multiple trees that blocked a railway north of Halifax.
A severe thunderstorm producing winds estimated near 70 mph knocked down multiple trees along with breaking off large limbs along US Highway 15 along with blowing off a roof near the intersection of Elimsport Road.
A thunderstorm producing winds estimated near 40 mph knocked down a tree on the north end of Mechanicsburg.
A severe thunderstorm producing winds estimated near 60 mph uprooted a large tree that fell alongside a house, crushing portions of the porch in Fisherville.
A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees onto roadways in Highspire.
A severe thunderstorm producing winds estimated at 70 mph knocked down numerous trees with minor roof damage in Selinsgrove.
A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees, blocking portions of US Route 209 in Lykens. There was also an instance of a tree falling onto a parked car in Lykens, with no injuries reported.
A severe thunderstorm producing winds estimated near 60 mph knocked down and snapped multiple trees east of Skyline View.
A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees along Sawmill Road east of Muncy.
A severe thunderstorm producing winds estimated near 60 mph knocked down multiple wires south of Kettle Creek.
A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees onto State Route 487, blocking one lane of the roadway south of Stillwater.
A severe thunderstorm produced quarter-sized hail southeast of Stillwater.
A thunderstorm producing winds estimated near 50 mph knocked down a tree onto Ray Street north of the intersection with East Market Street in Williamstown.
A severe thunderstorm producing winds estimated near 90 mph lifted a roof off of a gift shop and dropped it back onto the shop, completely destroying the building.
A severe thunderstorm producing winds estimated near 60 mph uprooted trees along State Route 72 northwest of Jonestown. Large limbs were also broken off of trees with 4 to 5 inch limbs down along roadways and hanging in wires.
A severe thunderstorm produced quarter-sized hail in Berwick.
Locally heavy rain with a thunderstorms produced radar estimated 1-2 inches of rain which led to ponding of water on roads near Muncy and a possible stranded vehicle.
A severe thunderstorm producing winds estimated near 80 mph knocked down numerous trees and caused extensive barn damage along Fowlersville Road south of North Centre.
A severe thunderstorm producing winds estimated near 70 mph knocked down numerous trees in and around Pottsville.
A severe thunderstorm producing winds estimated near 100 mph knocked down numerous trees along with damaging homes and buildings in Briar Creek Township. This included multiple damaged and destroyed barns and a garage that was heavily destroyed.
A severe thunderstorm producing winds estimated near 60 mph knocked down numerous trees in West Penn, Rahn, and Rush Townships.
A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees and wires in and around Johnstown.
A severe thunderstorm producing winds estimated near 60 mph uprooted trees and knocked down power lines in Ebensburg.
A severe thunderstorm producing winds estimated near 60 mph knocked down and uprooted multiple trees along with knocking down multiple powerlines northwest of Claysburg.
A severe thunderstorm producing winds estimated near 60 mph knocked down and uprooted multiple trees south of Hollidaysburg.
A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees and wires in Littlestown.
A severe thunderstorm producing winds estimated near 60 mph knocked down multiple trees and wires in Carroll Township.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2024Every state in 2024This day in weather historyWarnings in Pennsylvania, June 2024
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: 1189087, 1189091, 1192406, 1184405, 1189097, 1189100, 1191887, 1192239, 1191586, 1191590, 1193119, 1193125, 1193130, 1193131, 1193132, 1193135, 1184407, 1193134, 1193136, 1193138, 1193156, 1193155, 1193147, 1193160, 1193203, 1193169, 1193198, 1193195, 1193202, 1193166, 1193157, 1193231, 1184409, 1193204, 1193232, 1193216, 1184410, 1191593, 1193233, 1193221, and more.