Isolated severe thunderstorms produced a few reports of wind damage and hail during the late evening on Aug. 3 into the predawn hours on Aug.
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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.
Isolated severe thunderstorms produced a few reports of wind damage and hail during the late evening on Aug. 3 into the predawn hours on Aug. 4.
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 Aug 3, 5:24 PM EST, 1 hour 16 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 624 PM EDT MON AUG 3 2015 .SYNOPSIS... A COLD FRONT WILL PUSH SOUTHEAST AND THROUGH THE STATE THIS EVENING AND OVERNIGHT. HIGH PRESSURE WILL DOMINATE THE MIDWEEK BEFORE UNSETTLED CONDITIONS RETURN FOR THURSDAY AND FRIDAY AS A SLOW MOVING FRONT MOVES BACK INTO THE REGION. && .NEAR TERM /UNTIL 6 AM TUESDAY MORNING/... 6PM UPDATE... RELATIVELY STABLE AIR DEVELOPED OVER MOST OF THE FORECAST AREA THIS AFTERNOON EFFECTIVELY CAPPING CONVECTION AHEAD OF THE ADVANCING WEAK COLD FRONT. THE ATMOSPHERE HAS RECOVERED OVER SWRN PA WHERE THE MOST ACTIVE STORMS ARE IN PROGRESS AS OF 6 PM. THE HRRR TRACKS THESE STORMS EAST THROUGH THE SOUTH CENTRAL MOUNTAINS...WHILE KEEPING MORE SCATTERED SHOWERS AND THUNDERSTORMS DEVELOPING AND AFFECTING THE REGION INTO THE WEE HOURS OF TUESDAY MORNING. CONFIDENCE IS LOW ON THE ADDITIONAL CONVECTION DEVELOPMENT AS WE TYPICALLY SEE IT BECOME MORE STABLE AFTER WE LOSE THE SOLAR HEATING. ALTHOUGH THE SPC DAY ONE OUTLOOK KEEPS THE SLIGHT RISK OVER ALMOST ALL OF CENTRAL PA...HAVE DOWNPLAYED THE POTENTIAL FOR STRONG STORMS GIVEN THE MARGINAL INSTABILITY AND APPROACHING NIGHTFALL. LOWS EARLY TUESDAY WILL RANGE FROM THE MID 50S IN THE NW TO MID 60S OVER THE SOUTHEAST. && .SHORT TERM /6 AM TUESDAY MORNING THROUGH 6 PM TUESDAY/... A RATHER STRONG UPPER TROUGH AND SECONDARY CFRONT WILL BE DIVING SE FROM THE UPPER GLAKES REGION. ALTHOUGH THE LLVL ENVIRONMENT WILL BE DRIER AND SLIGHTLY COOLER IN THE WAKE OF MONDAY NIGHT/S CFROPA...STG FORCING BENEATH THE L.E. REGION OF A 95 KT JET WILL LIKELY SPARK AT LEAST ISOLATED TO SCATTERED TSRA ACROSS THE CENTRAL AND NRN MTNS. MAX TEMPS WILL VARY FROM THE 70S ACROSS THE NW HALF OF THE CWA...TO THE 80S IN THE SE HALF. CLOSE TO NORMAL FOR LATE SUMMER. && .LONG TERM /TUESDAY NIGHT THROUGH MONDAY/... THE UPPER LOW OVER NORTHERN QUEBEC SHOULD CONTINUE TO DRIFT TO THE NORTHEAST AND ZONAL TO SLIGHTLY NORTHWEST FLOW IS EXPECTED TO FOLLOW AS A QUASI-STATIONARY BOUNDARY HANGS OUT JUST TO THE SOUTH OF THE STATE. UNCERTAINTY REMAINS IN THE PLACEMENT OF THE BOUNDARY SO WILL KEEP SOME POP IN THE SRN PART OF THE STATE...BUT MOST LOCATIONS WILL BE DRY UNTIL THURSDAY INTO THURSDAY NIGHT. THEN A STACKED LOW WILL SLIDE EASTWARD FROM THE MID MISSISSIPPI VALLEY AND MAY MAKE A MORE-OR- LESS CONSTANT RAIN INSTEAD OF SHOWERY/CONVECTIVE PRECIP. THE UPPER LEVEL LOW WILL FINALLY MOVE OFF LATE NEXT WEEKEND WHICH WILL BE A HERALD FOR QUIETER WEATHER. TEMPERATURES SHOULD TREND COOLER LATER IN THE WEEK BEFORE WARMING UP INTO NEXT WEEK. && .AVIATION /22Z MONDAY THROUGH SATURDAY/... AN APPROACHING COLD FRONT AND PRECEDING SFC/LEE TROUGH OVER THE SUSQ VALLEY WILL ACT AS TWO AREAS OF FOCUS FOR LATE AFTERNOON/EVENING SHRA TSRA WITH SCT/BRIEF MVFR CIGS AND VSBYS. A FEW OF THE STORMS MAY BE STRONG TO SEVERE...WITH VERY BRIEF IFR VSBY IN +RA AND HIGHLY-LOCALIZED WESTERLY SFC WIND GUSTS AOA 40KTS. WILL CONTINUE TO USE -SHRA WITH VCTS BTWN 20-22Z TO SHOW TSTM IMPACT RISK AT ALL TERMINALS. OUTLOOK... TUE...VFR. ISOLD-SCT P.M. SHRA/TSRA CENTRAL AND NRN PENN. WED...VFR. NO SIG WX. THU-FRI...VFR/MVFR WITH RAIN PSBL AS LOW PRES TRACKS SOUTH OF CENTRAL PA. SAT...VFR WITH A LOW CHC OF MVFR IN ISOLATED AFTERNOON SHRA. && .CTP WATCHES/WARNINGS/ADVISORIES... NONE. && SYNOPSIS...LA CORTE/LAMBERT NEAR TERM...LA CORTE/LAMBERT SHORT TERM...LAMBERT LONG TERM...DANGELO/CERU AVIATION...STEINBUGL
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 407 AM EDT MON AUG 3 2015 PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053- 056>059-063>066-040815- WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD- NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN- JUNIATA-SOMERSET-BEDFORD-FULTON-FRANKLIN-TIOGA-NORTHERN LYCOMING- SULLIVAN-SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR- NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN-SCHUYLKILL-LEBANON-CUMBERLAND- ADAMS-YORK-LANCASTER- 407 AM EDT MON AUG 3 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY AS A COLD FRONT MOVES THROUGH THE AREA. THE THREAT OF WIND DAMAGE IS GREATER THAN THE THREAT FOR LARGE HAIL. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED.
The national radar mosaic for the moment the first event began.
13 thunderstorm wind, 1 hail. Local standard time, as filed.
Thunderstorm winds around 60 mph knocked down trees onto Chickentown Road near New Centerville.
Thunderstorm winds around 60 mph knocked down trees along Long Level Road near Montimorenci.
Thunderstorm winds around 60 mph knocked down trees along Peters Road near New Holland.
Thunderstorm winds around 60 mph knocked a tree down in Granville Twp.
Thunderstorm winds around 60 mph knocked down a tree on Delaware Ave in Juniata Terrace.
Thunderstorm winds around 60 mph knocked down tree limbs on Washington Ave in Lewistown.
Thunderstorm winds around 60 mph knocked down a tree limb that blocked one lane of Railroad Street in Lewistown.
Thunderstorm winds around 60 mph knocked down a tree in Derry Twp.
Thunderstorm winds around 60 mph knocked down a tree 2 miles northwest of Centre.
Thunderstorm winds around 60 mph knocked down a tree near East Salem.
Thunderstorm winds around 60 mph knocked down trees in Tuscarora Twp.
Thunderstorm winds around 60 mph knocked down trees in Liverpool Twp.
Quarter-sized hail near State Line.
Thunderstorm winds around 60 mph knocked down trees in Gettysburg.
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, August 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: 588033, 588034, 588036, 588037, 588038, 588039, 588040, 588041, 588042, 588043, 588044, 588045, 588032, 588046.