An organized thunderstorm complex tracked southeast from the Great Lakes and produced wind damage across north-central Pennsylvania during the pre-dawn and early morning hours. Additional storms developed on the southwest flank of the decaying nocturnal thunderstorm complex and produced wind damage in several counties along Interstate 80.
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.
An organized thunderstorm complex tracked southeast from the Great Lakes and produced wind damage across north-central Pennsylvania during the pre-dawn and early morning hours. Additional storms developed on the southwest flank of the decaying nocturnal thunderstorm complex and produced wind damage in several counties along Interstate 80. By late afternoon, scattered to numerous severe thunderstorms produced multiple reports of wind damage, marginally severe hail and localized flooding across portions of south-central Pennsylvania. The majority of the wind damage included downed trees and utility wires. A 15-year-old female was killed by falling branches while camping at the Minister Creek Campground in the Allegheny National Forest in extreme southern Warren County.
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 23, 3:53 AM EST, 47 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 453 AM EDT TUE JUN 23 2015 .SYNOPSIS... TEMPERATURES AND HUMIDITY WILL INCREASE TODAY AHEAD OF A COLD FRONT. SEVERE THUNDERSTORMS ARE POSSIBLE ALONG AND AHEAD OF THE FRONT...WHICH WILL MOVE SOUTHEAST ACROSS CENTRAL PENNSYLVANIA THROUGH THE DAYLIGHT HOURS. WEDNESDAY LOOKS DRY AND LESS HUMID. THE HUMIDITY CREEPS UP AGAIN LATE IN THE WEEK...WITH A SHOWERY WEEKEND IN STORE. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... LINE OF STRONG TO SEVERE STORMS MOVING ACROSS LAKE ERIE AT 08Z...WITH VERY IMPRESSIVE LOOKING BOW ECHO AND TRAILING GUST FRONT ALONG LAKESHORE. THIS FEATURE HAS JUST PROMPTED AN SWOMCD...WILL PROPAGATE EASTWARD INTO NORTHERN PA /NORTH OF I-80/ OVER NEXT SEVERAL HOURS BRINGING AT LEAST AN ISOLATED DAMAGING WIND THREAT AS SHORTWAVE TROUGH SLIDES EAST AND CORE OF 40-50KT 850MB JET CROSSES NW PA. /HIGHEST GUSTS SO FAR BACK IN NE OH ARE 30KTS AT KCLE AND 40KTS AT KHZY./ BY LATE MORNING...DECAYING MCS/CONVECTIVE COMPLEX WILL BEGIN TO HAVE AN IMPACT ON EVOLUTION OF STORMS FOR REMAINDER OF THE DAY. LOOKS LIKE SE PA SHOULD SEE A GOOD AMOUNT OF SUNSHINE TODAY...ALLOWING TEMPS TO RISE TO NEAR 90F AT THE SAME TIME THAT HIGHER DEWPOINTS ADVECT IN FROM THE SW. THIS WILL AID IN PRODUCING CAPES IN NEIGHBORHOOD OF 1500-2000 J/KG...COMBINED WITH INCREASING MID-LEVEL FLOW SHOULD LEAD TO MORE ORGANIZED STORMS CONDUCIVE TO PRODUCING STRONG WINDS AND BOWING SEGMENTS. LARGE HAIL WILL BE A SECONDARY THREAT. SPC HAS PLACED THE SE IN AN ENHANCED RISK...WITH CENTRAL SECTIONS UNDER A SLIGHT RISK FOR SEVERE. NORTHWESTERN AREAS WILL LIKELY HAVE BEEN WORKED OVER BY 15Z AND BY THE TIME THEY CAN RECOVER THE FRONT WILL BE UPON OR THROUGH THERE...LIMITING THE SEVERE THREAT AFTER THE FIRST INITIAL WAVE EARLY THIS MORNING. THE FRONT SHOULD CLEAR THE SOUTHERN TIER BY EARLY EVENING. && .SHORT TERM /6 PM THIS EVENING THROUGH THURSDAY/... COULD BE LINGERING ACTIVITY ALONG MASON/DIXON LINE EARLY THIS EVE...BUT COLD FRONT PROGRESSING SOUTHWARD WILL END CONVECTION BY SUNSET. COOLER AND NOTICEABLY DRIER AIR PUSHES IN BEHIND THE FRONT...WITH NORTHERN SECTIONS SLIPPING INTO THE LOWER/MID 50S TONIGHT - A GOOD 15-20F COOLER THAN THIS MORNING. DRIER AIR TAKES A BIT LONGER TO WORK INTO THE SOUTH...WITH LOWS HANGING IN THE 60S. PLEASANT DAY ON WED WITH PLENTY OF SUNSHINE AND HIGH TEMPS NEARLY SPOT ON DAILY NORMALS. THE AIR CONDITIONERS GET A BREAK WED NIGHT AS LOWS FALL BACK INTO THE 50S IN ALL BUT THE SOUTH CENTRAL MTNS AND LOWER SUSQ. CLOUDS INCREASE ON THU AS A MID LEVEL SHORTWAVE BRINGS POTENTIAL FOR SCT SHOWERS/TSTMS...ESP FOR SW HALF. TEMPS REMAIN CLOSE TO NORMAL. && .LONG TERM /THURSDAY NIGHT THROUGH MONDAY/... FAST ZONAL FLOW WILL BE THE PERSISTENT SYNOPTIC FEATURE ACROSS THE NORTHERN U.S. THROUGH FRI AND INTO THE WEEKEND. FRONTAL BOUNDARY SETTLES OVER MID ATLANTIC REGION MIDWEEK...WITH SLIGHTLY DRIER AND COOLER AIR. WEAK SYSTEM MOVING SOUTH OF THE AREA ON THU AND FRIDAY WILL BRING SOME SHOWERS TO THE AREA. SIMILAR TO LAST THU AND FRIDAY. MORE SHOWERS FOR THE WEEKEND INTO MONDAY...AS LONGWAVE TROUGH MOVES TOWARD THE EAST COAST. && .AVIATION /09Z TUESDAY THROUGH SATURDAY/... MAINLY VFR CONDITION WILL CONTINUE OVERNIGHT...WITH THE SOLE EXCEPTION BEING BFD WHICH HAS STRONG SOUTHWESTERLY FLOW...ALLOWING FOR MVFR CIGS. LOW LEVEL WIND SHEAR WILL BE POSSIBLE OUT AHEAD OF THE INCOMING FRONT LATE TONIGHT INTO TOMORROW MORNING AT THE WESTERN AND CENTRAL TAF SITES. A LARGE CONVECTIVE LINE IS CURRENTLY CROSSING LAKE ERIE AND IS SLOWLY MOVING ITS WAY INTO NW PA. MORE CONVECTION EXPECTED REGIONWIDE TUESDAY MORNING...THROUGH THE AFTERNOON WITH NEXT WEATHER SYSTEM. THIS WILL INTERMITTENTLY ALLOW FOR MVFR TO IFR CIGS AND VSBYS IN SHOWERS AND THUNDERSTORMS. OUTLOOK... WED-THU...GENERALLY VFR AREAS AM MVFR IN FOG/HAZE. FRI...REDUCTIONS IN SCT SHRA/TSRA. && .CTP WATCHES/WARNINGS/ADVISORIES... NONE. && SYNOPSIS...RXR NEAR TERM...RXR SHORT TERM...RXR LONG TERM...MARTIN AVIATION...ROSS/CERU
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 416 AM EDT TUE JUN 23 2015 PAZ004>006-010>012-017-018-037-041-240830- WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD- NORTHERN CENTRE-TIOGA-NORTHERN LYCOMING- 416 AM EDT TUE JUN 23 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT. STRONG TO POTENTIALLY SEVERE THUNDERSTORMS WILL BE POSSIBLE THIS MORNING...ESPECIALLY ACROSS THE NORTHWEST MOUNTAINS. DAMAGING WIND GUSTS WILL BE THE MAIN THREAT. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. PAZ019-024>028-033>036-042-045-046-049>053-056>059-063>066-240830- SOUTHERN CENTRE-CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN-JUNIATA-SOMERSET- BEDFORD-FULTON-FRANKLIN-SULLIVAN-SOUTHERN CLINTON-SOUTHERN LYCOMING- UNION-SNYDER-MONTOUR-NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN- SCHUYLKILL-LEBANON-CUMBERLAND-ADAMS-YORK-LANCASTER- 416 AM EDT TUE JUN 23 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT. SCATTERED TO NUMEROUS THUNDERSTORMS WILL DEVELOP ACROSS THE REGION TODAY...WITH IMPACTS MAINLY FROM LATE MORNING THROUGH THE AFTERNOON HOURS. THERE IS AN ENHANCED RISK OF STRONG TO SEVERE THUNDERSTORMS DURING THIS TIME...WITH DAMAGING WINDS THE PRIMARY THREAT. LARGE HAIL IS ALSO A POSSIBILITY. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. RXR
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
507 AM EDT TUE JUN 23 2015
PAZ004-231000-
WARREN PA-
507 AM EDT TUE JUN 23 2015
...STRONG THUNDERSTORMS WILL AFFECT WARREN COUNTY UNTIL 600 AM EDT...
AT 503 AM EDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A
LINE EXTENDING FROM NEAR MAYVILLE NEW YORK TO NEAR MEADVILLE...
MOVING EAST AT 50 MPH.
50 MPH WIND GUSTS WILL BE POSSIBLE WITH THESE STORMS...ALONG WITH
FREQUENT CLOUD TO GROUND LIGHTNING.
THESE STORMS WILL TRACK FROM WEST TO EAST ACROSS WARREN COUNTY...
IMPACTING THE FOLLOWING LOCATIONS...BEAR LAKE...CLARENDON...
STARBRICK...SUGAR GROVE...WARREN AND TIDIOUTE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.
&&
LAT...LON 4200 7892 4184 7892 4182 7895 4162 7896
4163 7961 4200 7961
TIME...MOT...LOC 0903Z 283DEG 42KT 4221 7952 4160 8015
RXRSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
536 AM EDT TUE JUN 23 2015
PAZ005-010-011-231030-
MCKEAN PA-CAMERON PA-ELK PA-
536 AM EDT TUE JUN 23 2015
...STRONG THUNDERSTORMS WILL AFFECT MCKEAN...CAMERON...AND ELK
COUNTIES UNTIL 630 AM EDT...
AT 535 AM EDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A
LINE EXTENDING FROM NEAR FREWSBURG TO NEAR CHAPMAN STATE PARK TO NEAR
COOPERSTOWN...AND MOVING EAST AT 50 MPH.
50 MPH WIND GUSTS WILL BE POSSIBLE WITH THESE STORMS...ALONG WITH
FREQUENT CLOUD TO GROUND LIGHTNING.
THE STRONG THUNDERSTORMS WILL BE NEAR...
LUDLOW AROUND 550 AM EDT.
WETMORE...KANE AND JAMES CITY AROUND 555 AM EDT.
BRADFORD AND WESTLINE AROUND 600 AM EDT.
WILCOX AROUND 605 AM EDT.
KINZUA BRIDGE STATE PARK AND EAST BRANCH DAM AROUND 610 AM EDT.
BETULA...ELK RIVER AND CROSBY AROUND 620 AM EDT.
OTHER LOCATIONS IMPACTED BY THESE STORMS INCLUDE ELDRED...KERSEY...
LEWIS RUN...MOUNT JEWETT AND BRADFORD AIRPORT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.
&&
LAT...LON 4200 7821 4160 7820 4126 7858 4125 7865
4122 7865 4120 7871 4127 7874 4137 7896
4136 7910 4145 7906 4144 7898 4145 7896
4182 7895 4184 7892 4200 7892
TIME...MOT...LOC 0935Z 276DEG 52KT 4206 7906 4172 7922 4147 7981
RXRThe Buffalo radar (KBUF), 122 km away, was scanning. The volume nearest the first event began at 09:40 UTC.
31 thunderstorm wind, 2 hail, 1 funnel cloud. Local standard time, as filed.
Thunderstorms producing winds estimated around 60 mph knocked down trees across northwestern Warren County.
Thunderstorms producing winds estimated around 90 mph knocked down trees in a campground, killing one person and injuring 4 others in the Minister Creek recreation area.
Thunderstorms producing winds estimated around 60 mph knocked down a tree across a road near Bradford.
Thunderstorms producing winds estimated around 70 mph knocked down trees at multiple locations along Route 6.
Thunderstorms producing winds estimated around 60 mph knocked down trees across a roadway northwest of Dahoga.
Thunderstorms producing winds estimated around 60 mph knocked down trees across a roadway near Whistletown.
Thunderstorms producing winds estimated around 60 mph knocked down a tree near Johnsonburg.
Thunderstorms producing winds estimated around 60 mph knocked down trees around Saint Marys.
Thunderstorms producing winds estimated around 60 mph knocked down trees onto Eleven Mile Road southwest of Eleven Mile.
Thunderstorms producing winds estimated around 60 mph knocked down trees near Keating Summit.
Thunderstorms producing winds estimated around 60 mph knocked own trees near Hebron Center.
Thunderstorms producing winds estimated around 60 mph knocked down trees near Austin.
Thunderstorms producing winds estimated around 60 mph knocked down trees near Davis Station.
Thunderstorms producing winds estimated around 60 mph knocked down trees and wires south of Carter Camp.
Thunderstorms producing winds estimated around 60 mph knocked down a tree near Elimsport.
Thunderstorms producing winds estimated around 70 mph knocked down trees and wires near Luthersburg.
Thunderstorms producing winds estimated around 70 mph knocked down trees and wires around Curwensville.
Thunderstorms producing winds estimated around 70 mph knocked down power lines near Zion.
Thunderstorms producing winds estimated around 70 mph knocked down trees and wires near Mahaffey.
Thunderstorms producing winds estimated around 70 mph knocked down trees along Rock Road near University Park Airport.
Thunderstorms producing winds estimated around 60 mph knocked down a tree along Linden Hall Road east of Boalsburg.
Thunderstorms producing a microburst with winds estimated around 80 mph...knocking down more than 50 trees and some wires in Aaronsburg.
Thunderstorms producing winds estimated around 70 mph knocked down trees in Northumberland borough.
Thunderstorms producing winds estimated around 60 mph knocked a tree down onto wires near Shade Gap.
Thunderstorms produced quarter-sized hail near Shiremanstown.
Thunderstorms produced nickel-sized hail near Etters.
A funnel cloud was reported near Blue Ball. The caller said the funnel did not touch down.
Thunderstorms producing winds estimated around 70 mph knocked down trees near Blue Ball.
Thunderstorms producing winds estimated around 60 mph knocked down multiple trees near Shrewsbury and uprooted one. One of the trees fell on a car.
Thunderstorms producing winds estimated around 70 mph knocked down trees and wires near Ephrata.
Thunderstorms producing winds estimated around 70 mph caused a partial collapse of a shed and tore a portion of a roof off a barn near Ephrata.
Thunderstorms producing winds estimated around 70 mph knocked down numerous trees west of Ephrata...with one falling onto a roof.
Thunderstorms producing winds estimated around 70 mph knocked down numerous trees near Seven Valleys.
Thunderstorms producing winds estimated around 60 mph knocked down a tree onto a garage northeast of Stewartstown.
As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.
| Event | Date | Age | Sex | Where | Kind |
|---|---|---|---|---|---|
| Thunderstorm Wind, Warren | 2015-06-23 | 15 | Female | Camping | Direct |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2015Every state in 2015This day in weather historyWarnings in Pennsylvania, June 2015
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: 574393, 574435, 574387, 574388, 574389, 574422, 574423, 574424, 574417, 574419, 574431, 574432, 574421, 574429, 574430, 574390, 574392, 574397, 574398, 574395, 574396, 574433, 574399, 574434, 574385, 574386, 574384, 574404, 574410, 574414, 574436, 574437, 574403, 574411.