Scattered thunderstorms developed along the northern tier of Pennsylvania during the mid to late afternoon in a very warm and humid airmass. A cluster of storms over Warren County produced isolated wind damage, toppling multiple trees west of Sheffield near Cherry Grove.
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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.
Scattered thunderstorms developed along the northern tier of Pennsylvania during the mid to late afternoon in a very warm and humid airmass. A cluster of storms over Warren County produced isolated wind damage, toppling multiple trees west of Sheffield near Cherry Grove.
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 8, 7:16 PM EST, 1 hour 4 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 816 PM EDT SUN JUN 8 2008 .SYNOPSIS... MID SUMMER HEAT AND HUMIDITY WILL CONTINUE THROUGH MONDAY...AND PERHAPS INTO TUESDAY FOR THE CENTRAL MOUNTAINS AND SUSQUEHANNA VALLEY...UNTIL A WEAK FRONT BRINGS RELIEF IN THE FORM OF SHOWERS AND THUNDERSTORMS AND THEN A RETURN TO NORMAL TEMPERATURES. BY FRIDAY OR SATURDAY THE TEMPERATURES MAY WARM TO SLIGHTLY ABOVE NORMAL ALONG WITH CHANCES FOR MAINLY AFTERNOON OR EVENING SHOWERS OR THUNDERSTORMS. && .NEAR TERM /UNTIL 6 AM MONDAY MORNING/... TSTORMS ALREADY OVER THE NRN TIER...AND NEAR SEVERE WITH SMALL HAIL AND GUSTS TO 50 MPH POSSIBLE. MORE T WILL MOVE IN FROM THE WEST SHORTLY...BUT SHOULD REMAIN NORTH OF I-80. SCT TO ALMOST LIKELY POPS OVER THE NW LOOK GOOD FOR THE EVENING...WITH LOWER POPS AFTER 1 OR 2 AM LOCAL. CLOUD COVER SHOULD ALSO DECREASE AFTER MIDNIGHT AS THE SHORTWAVE ASSOCIATED WITH THE NEXT BATCH OF STORMS MOVES TO THE EAST...AND RIDGE AND CAP TAKE OVER AGAIN. && .SHORT TERM /6 AM MONDAY MORNING THROUGH 6 PM MONDAY/... PATCHY FOG AGAIN POSSIBLE LATE TONIGHT/EARLY MONDAY IN THE HAZY AND HUMID AIRMASS...MAINLY IT SHOULD BE IN THE SUSQ VALLEY. DID NOT MENTION HAZE FOR TOMORROW AS HAZY CONDITIONS HAVE NOT REALLY DEVELOPED UNDER THIS HIGH PRESSURE RIDGE. VSBYS GENERALLY REMAINING AOA 10SM. THE HEAT AND HUMIDITY CONTINUE ON MONDAY. EXTENDED THE ADVISORY INTO MONDAY EVENING FOR HEAT INDICES AGAIN NEAR OR SLIGHTLY ABOVE 100. NOBODY SHOULD TOP 105...BUT TEMPS AGAIN IN THE M-U90S SHOULD LEAD TO HIGH HEAT INDICES. DEWPOINTS MAY BE SLIGHTLY LOWER THAN SUNDAY...BUT CLIMO AND PERSISTENCE SAY TO KEEP THEM SIMILAR TO SUNDAY...IN THE LOWER 70S IN THE SUSQ VALLEY AND WELL INTO THE 60S ELSEWHERE. THERE WILL AGAIN BE A SLIGHT CHC OF A SHOWER OR TSTORM IN THE NRN TIER ON MON AFTN...AS LAKE BREEZE MAY HELP TO CREATE A BIT OF CONVERGENCE TO POP THINGS UP ACROSS THE NRN TIER. && .LONG TERM /MONDAY NIGHT THROUGH SUNDAY/... 588 DAM SUBTROPICAL RIDGE WILL SLIDE EWD OFF OF THE ERN SEABOARD BY EARLY TUESDAY IN ADVANCE OF A MIDWEST/UPPER PLAINS MID-LVL TROF...WHICH WILL TAKE ON A BRIEF NEGATIVE TILT AS IT LIFTS QUICKLY NEWD THRU THE LWR GLKS. AT THE SFC...ASSOC CLD FNT WILL SWEEP ENEWD THRU THE OH VLY DURG THE EARLY AFTN AND MOVE INTO PA LATER IN THE DAY/EARLY EVE. A PRE-FRONTAL TROF WILL ALSO SET UP IN THE LEE OF THE APPALACHIANS FM SERN NY SWWD THRU THE MID/LWR SUSQ VLY. BOTH SFC FEATURES WILL ACT AS A FOCUS FOR CONVECTION. A MOIST LLVL AIRMASS /SFC DEWPOINTS OF 65-70F/ IN CONJUNCTION WITH DAYTIME HEATING SHOULD LEAD TO A VERY UNSTABLE AIRMASS ALONG AND AHEAD OF BOTH LLVL BOUNDARIES TUE AFTN. THE SREF SHOWS A FAIRLY HIGH PROBABILITY /60-80%/ OF LI/S < -4 AND CAPE VALUES EXCEEDING 1000 J/KG. THE 12KM NAM SHOWS CINH ERODING FIRST ACROSS THE UPR OH VLY/WRN PA EARLY IN THE DAY...WITH STORMS LKLY HOLDING OFF UNTL THE AFTN FURTHER EAST ACROSS CENTRAL/ERN PA INITIATING ON THE EDGE OF THE CAP/PRE-FRONTAL TROF. 45-50KT SSWLY MID LVL FLOW OVERSPREADING THE REGION WILL PROVIDE SUFFICIENT SHEAR FOR ORGANIZED STG TO SEVERE STORMS. DY3 SPC OUTLOOK HAS ALL OF THE CWFA IN SLIGHT RISK...WHICH IS COVERED IN THE HWO. HAVE GONE ABV MOS BLEND FOR POPS BASED ON THE SREF...BUT HELD IN THE LKLY RANGE 60-70% FOR MOST AREAS. RECORD TEMPS MAY BE IN JEOPARDY AT IPT/MDT ON TUE (6/10) WITH FCST MAXES IN THE LOW/MID 90S. SEE CLIMATE SECTION BELOW MORE DETAILS. TAPERED POPS OFF TUE NGT FROM WEST-EAST AS THE CLD FNT EXITS THE CWFA. HIGH PRES MOVG IN FM THE GLKS WILL BRING COOLER/DRIER AIR AND TRANQUIL WX WED/THUR...PROVIDING A TEMPORARY PAUSE IN THE UNSEASONABLY WARM WEATHER. TWD THE END OF THE WORK WEEK/UPCOMING WKEND...UNCERTAINTY INCREASES IN THE FCST AS THE OP ECMWF/GFS DEVELOP AN UPPER LOW OFF OF THE ECOAST. MEANWHILE...THE GFS ENS STILL SHOWS ANOMALOUS RIDGING OVR MUCH OF THE MID ATLC AND NORTHEAST. HAVE CONTINUED A MOSGUIDE/HPC BLEND FOR TEMPS/POPS IN THE LATER PDS TO ACCOUNT FOR THE AFOREMENTIONED UNCERTAINTY. THIS YIELDS A MAINLY DRY FCST DY4-8. HOWEVER THE GEFS DOES SHOW FNTL PCPN MOVG E OUT OF THE MS VLY AND APPROACHING THE REGION TWD THE LATTER HALF OF THE WKEND. && .AVIATION /00Z MONDAY THROUGH FRIDAY/... SCT SHWRS/TSTMS OVER NORTHERN PA EARLY THIS EVENING EXPECTED TO DISSIPATE SHORTLY AFTER SUNSET. A MORE ORGANIZED AREA OF SHWRS/TSTMS...CURRENTLY OVR SOUTHERN ONTARIO...SHOULD PUSH INTO UPSTATE NY OVERNIGHT ALONG AXIS OF GREATEST MOISTURE/INSTABILITY. HOWEVER...CAN/T RULE OUT NORTHERN PA /KBFD/ GETTING CLIPPED BTWN 03-07Z. MONDAY/MONDAY NITE...DOMINANT RIDGE OF HI PRES REMAINS OVER THE EASTERN SEABOARD. WARM TEMPS ALOFT SHOULD SUPPRESS ANY CONVECTION...SO FCST WILL BE DRY. THE RELATIVELY LIGHT WINDS AND HIGH HUMIDITY ASSOCIATED WITH THIS SYSTEM WILL BE CONDUCIVE TO SOME HAZE OR FOG /4-6SM/ DURING THE AM HOURS...WHEN WINDS/MIXING AT A LOW POINT. A DYING COLD FRONT WILL MOVE INTO THE REGION TUES/TUE EVENING...PROVIDING A BETTER CHC OF SHWRS/TSTMS STATEWIDE. A RIDGE OF HI PRES IS LIKELY TO BUILD INTO THE REGION WED/THUR...PROVIDING GOOD FLYING CONDS. && .CLIMATE... RECORD HIGH TEMPERATURES FOR SELECTED SITES. 6/8 WILLIAMSPORT 98 IN 1933 HARRISBURG 96 IN 1999 STATE COLLEGE 94 IN 1933 ALTOONA 92 IN 1984 BRADFORD 88 IN 1968 6/9 WILLIAMSPORT 99 IN 1933 HARRISBURG 97 IN 1933 STATE COLLEGE 95 IN 1933 ALTOONA 93 IN 1984 BRADFORD 85 IN 2004 6/10 WILLIAMSPORT 93 IN 1914/1991 HARRISBURG96 IN 1984 && .CTP WATCHES/WARNINGS/ADVISORIES... HEAT ADVISORY UNTIL 8 PM EDT MONDAY FOR PAZ028-036-045-046- 049>053-056-057-059-063>066. && SYNOPSIS...DANGELO/LACORTE/RXR NEAR TERM...DANGELO/RXR SHORT TERM...DANGELO/RXR LONG TERM...STEINBUGL AVIATION...FITZGERALD CLIMATE...STEINBUGL
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 751 PM EDT SUN JUN 8 2008 PAZ004>006-010>012-017>019-024>027-033>035-037-041-042-058-100000- WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD- NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN- SOMERSET-BEDFORD-FULTON-TIOGA-NORTHERN LYCOMING-SULLIVAN-SCHUYLKILL- 751 PM EDT SUN JUN 8 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TONIGHT THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY A COLD FRONT WILL MOVE INTO THE REGION TUESDAY ACCOMPANIED BY SHOWERS AND THUNDERSTORMS. SOME OF THE THUNDERSTORMS COULD BE SEVERE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. PAZ028-036-045-046-049>053-056-057-059-063>066-100000- JUNIATA-FRANKLIN-SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER- MONTOUR-NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN-LEBANON-CUMBERLAND- ADAMS-YORK-LANCASTER- 751 PM EDT SUN JUN 8 2008 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT MONDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TONIGHT PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. HEAT ADVISORY. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. HEAT ADVISORY. A COLD FRONT WILL MOVE INTO THE REGION TUESDAY ACCOMPANIED BY SHOWERS AND THUNDERSTORMS. SOME OF THE THUNDERSTORMS COULD BE SEVERE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. DANGELO
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE STATE COLLEGE PA 648 PM EDT SUN JUN 8 2008 PAZ005-082315- MCKEAN- 648 PM EDT SUN JUN 8 2008 ...A STRONG THUNDERSTORM WILL AFFECT CENTRAL MCKEAN COUNTY... AT 640 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A STRONG THUNDERSTORM LOCATED 12 MILES SOUTHWEST OF BRADFORD...MOVING EAST AT 34 MPH. WIND GUSTS TO 50 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM. THIS STORM WILL BE NEAR LEWIS RUN AROUND 655 PM...CYCLONE AROUND 705 PM...REW AROUND 710 PM AND SMETHPORT AROUND 715 PM. FORECASTER: KF
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE STATE COLLEGE PA 702 PM EDT SUN JUN 8 2008 PAZ042-082315- SULLIVAN- 702 PM EDT SUN JUN 8 2008 ...STRONG THUNDERSTORMS AFFECTING EAST CENTRAL SULLIVAN COUNTY... AT 659 PM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM 5 MILES SOUTH OF WYALUSING TO 13 MILES SOUTHWEST OF WYALUSING...MOVING SOUTHEAST AT 37 MPH. WIND GUSTS TO 50 MPH AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS. THESE STORMS WILL BE NEAR RICKETTS GLEN STATE PARK AROUND 710 PM. FORECASTER: KF
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE STATE COLLEGE PA 758 PM EDT SUN JUN 8 2008 PAZ041-046-090030- NORTHERN LYCOMING-SOUTHERN LYCOMING- 758 PM EDT SUN JUN 8 2008 ...A STRONG THUNDERSTORM WILL AFFECT CENTRAL LYCOMING COUNTY... AT 752 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A STRONG THUNDERSTORM LOCATED 18 MILES SOUTHEAST OF WELLSBORO... MOVING SOUTHEAST AT 34 MPH. WIND GUSTS TO 50 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM. THIS STORM WILL BE NEAR TROUT RUN AROUND 805 PM...RALSTON AROUND 810 PM...LOYALSOCKVILLE AROUND 820 PM AND BARBOURS AROUND 830 PM. FORECASTER: KF
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE STATE COLLEGE PA 824 PM EDT SUN JUN 8 2008 PAZ004-090100- WARREN- 824 PM EDT SUN JUN 8 2008 ...GUSTY THUNDERSTORMS WILL AFFECT WARREN COUNTY... AT 819 PM EDT...RADAR SHOWED THUNDERSTORMS BREAKING OUT ACROSS WARREN COUNTY. WIND GUSTS TO NEAR 50 MPH HAVE BEEN REPORTED JUST WEST OF THE AREA AND ARE POSSIBLE ACROSS WARREN COUNTY BETWEEN 830 PM AND 930 PM. FORECASTER: KF
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE STATE COLLEGE PA 847 PM EDT SUN JUN 8 2008 PAZ041-042-046-053-090115- COLUMBIA-NORTHERN LYCOMING-SOUTHERN LYCOMING-SULLIVAN- 847 PM EDT SUN JUN 8 2008 ...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL LYCOMING...NORTHERN COLUMBIA AND SOUTHERN SULLIVAN COUNTIES... AT 842 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A STRONG THUNDERSTORM LOCATED 12 MILES NORTHEAST OF MONTOURSVILLE... MOVING EAST AT 35 MPH. WIND GUSTS TO 50 MPH AND PEA-SIZED HAIL ARE POSSIBLE WITH THIS STORM. THIS STORM WILL BE NEAR MUNCY VALLEY AROUND 855 PM...LAIRDSVILLE AROUND 900 PM...BIGGERTOWN AROUND 905 PM AND CENTRAL AROUND 915 PM. FORECASTER: KF
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE STATE COLLEGE PA 908 PM EDT SUN JUN 8 2008 PAZ042-046-053-090145- COLUMBIA-SOUTHERN LYCOMING-SULLIVAN- 908 PM EDT SUN JUN 8 2008 ...STRONG THUNDERSTORMS WILL AFFECT EASTERN SULLIVAN...NORTHERN COLUMBIA AND EXTREME SOUTHEASTERN LYCOMING COUNTIES... AT 903 PM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM DUSHORE TO MUNCY...MOVING EAST AT 34 MPH. WIND GUSTS TO 50 MPH AND PEA-SIZED HAIL ARE POSSIBLE WITH THESE STORMS. THESE STORMS WILL BE NEAR CENTRAL AROUND 920 PM AND RICKETTS GLEN STATE PARK AROUND 925 PM. THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 220...STATE ROAD 118. FORECASTER: DANGELO
The State College radar (KCCX), 130 km away, was scanning. The volume nearest the first event began at 01:20 UTC.
1 thunderstorm wind. Local standard time, as filed.
The Warren County 911 center reported multiple trees down approximately seven miles west of Sheffield near Cherry Grove.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2008Every state in 2008This day in weather historyWarnings in Pennsylvania, June 2008
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: 92916.