Isolated, marginally-severe thunderstorms in the lee of the central Appalachians developed toward the I-95 corridor during the afternoon. One storm moved north crossing the Mason-Dixon line into extreme southeastern Franklin County, where it produced damaging winds in Blue Ridge Summit.
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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, marginally-severe thunderstorms in the lee of the central Appalachians developed toward the I-95 corridor during the afternoon. One storm moved north crossing the Mason-Dixon line into extreme southeastern Franklin County, where it produced damaging winds in Blue Ridge Summit.
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 2, 2:32 PM EST, 18 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 332 PM EDT SUN JUN 2 2013 .SYNOPSIS... SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP ACROSS MAINLY THE SOUTHEAST COUNTIES THIS AFTERNOON AND EVENING. THEN A COLD FRONT MOVING THROUGH TONIGHT WILL BRING AN END TO OUR RUN OF VERY WARM AND HUMID WEATHER...REPLACING IT WITH GENERALLY COOLER AND DRIER CONDITIONS THAT WILL PREVAIL THROUGH MID WEEK. WET WEATHER WILL RETURN FOR LATE WEEK AS A NEW WEATHER SYSTEM APPROACHES. && .NEAR TERM /UNTIL MIDNIGHT TONIGHT/... OUTSIDE OF A FEW CELLS...WEATHER REMAINS PRETTY QUIET ACROSS CENTRAL PA THIS MID AFTERNOON. SHORTWAVE HAS SLID INTO NEW ENGLAND...WHERE IT HAS BEGUN TO ENHANCE CONVECTION THERE. CENTRAL PA SITTING IN NVA BEHIND THIS FEATURE ATTM SURPRESSING CONVECTION. BUT REMNANTS OF ANOTHER OLD MCS SLIDING INTO MID ATLANTIC LOOK TO BE BEST FOCUSING MECHANISM FOR NEW STORMS LATE THIS AFTERNOON/EARLY THIS EVENING. DEBRIS CLOUDS SPREADING ACROSS CWA ATTM WILL TAKE A BIT OF A BITE OUT OF DAYTIME HEATING OVER LOWER SUSQ...AND LOOKING FORWARD...THE BEST DYNAMICS/CAPE WILL BE SOUTH AND EAST OF OUR CWA. SO EVEN THOUGH SCT TSTMS STILL EXPECTED...THE BEST SEVERE THREAT WILL REMAIN TO OUR EAST AND ALONG OUR SOUTHERN BORDER. THAT DOESNT RULE OUT SOME GUSTY WINDS OR ISO SVR WITH ANY STORMS THAT FORM OVER PA...AND WILL CONTINUE MENTION THE GUSTY WINDS THROUGH THE AFTERNOON HOURS IN GRIDS/ZONES AND CHANCE SEVERE IN HWO /EVEN AS SPC SLIGHT RISK SHIFTS FURTHER EASTWARD/. A CHANCE FOR TSTMS CONTINUES THIS EVENING IN THE FAR SE. OTHERWISE...WARM MUGGY CONDITIONS CONTINUE ACROSS THE SOUTHERN HALF OF CWA...WHILE COOLER AIR BEGINNING TO SLOWLY WORK INTO THE NORTHWEST /WITH KBFD IN THE UPPER 60S AND DEWPOINTS FALLING BACK TO NEAR 60F/. THE EVENING WILL CONTINUE TO BE VERY MILD AND MUGGY IN THE SE...AND GRADUALLY BECOMING MORE PLEASANT IN THE NW. && .SHORT TERM /MIDNIGHT THROUGH 6 PM MONDAY/... STILL SOME UNCERTAINTY AS TO THE TIMING OF THE FRONT THRU SERN PA LATER TONIGHT INTO EARLY MONDAY...WHICH COULD LEAD TO SOME STRATOCU AND LIGHT FOG OVERNIGHT. THE NAM IS THE SLOWEST WITH A WAVY FEATURE STILL STUCK OVER SERN PA INTO EARLY MONDAY...WHILE THE GFS AND ECMWF HAVE THE SURFACE FRONT ANYWHERE FROM THE CENTRAL DEL MARVA AREA TO NORTHERN NJ. SO KEPT THE SMALL MENTION OF SHOWERS GOING INTO MONDAY MORNING. DRIER AND COOLER AIR WILL MOVE IN FROM THE NW OVERNIGHT AND MONDAY WITH THE LAST OF THE 60S DEWPOINTS BEING SHOVED OFF TO THE SE IN TIME. HOW FAST THEY EXIT THE REGION ALTOGETHER WILL DEPEND ON THE FRONT MENTIONED ABOVE. HIGHS MONDAY WILL BE IN THE 60S OVER THE NW...5-10F BELOW NORMAL FOR EARLY JUNE. HIGHS NEAR 80 IN THE SE WILL BE VERY NEAR NORMAL. && .LONG TERM /MONDAY NIGHT THROUGH SUNDAY/... HIGH PRESSURE BUILDING DOWN OUT OF THE GR LAKES SHOULD PROVIDE FOR SOME DRY UNEVENTFUL WEATHER TUESDAY WITH PLEASANT TEMPS AND HUMIDITY. AS THE HIGH MOVES OFF TO OUR NORTHEAST WE SHOULD SET UP A SOUTHERLY FLOW OF INCREASING MOIST AIR. MEANWHILE THE MODELS WANT TO CARVE OUT A BROAD SLOW-MOVING UPPER TROUGH OVER THE EASTERN US SUGGESTING A PROLONGED PERIOD OF UNSETTLED WEATHER SETTING UP FROM ABOUT MID WEEK...POSSIBLY INTO NEXT WEEKEND. I REINTRODUCED THE CHANCES FOR RAIN BY WEDNESDAY AND KEPT THE MENTION OF SHOWERS RIGHT INTO SUNDAY. THE EXPECTED DEVELOPMENT OF A NEGATIVE NAO COULD SIGNAL THIS EASTERN TROUGH STICKING AROUND FOR A WHILE WITH THE GEFS SHOWING AN ANOMALOUS TROUGH DEVELOPING INTO THE LOWER GR LAKES OUT AS FAR AS DAY 7. OF NOTE IS SOME TROPICAL MOISTURE OVER THE BAY OF CAMPECHE. THE NHC SAYS IT HAS NO CHANCE OF TURING INTO A TROPICAL CYCLONE OVER THE NEXT COUPLE OF DAYS...BUT THE VARIOUS OPERATIONAL MODELS SEEM TO WANT TO DRAG AT LEAST SOME OF THE MOISTURE NORTHWARD. AS USUAL THERE IS NO AGREEMENT ON THE FINE DETAILS WITH THE GFS TAKING THE SLUG OF MOISTURE OFF THE SERN US COAST...THE ECMWF TAKING THINGS A FAIR DISTANCE UP THE COAST AND THE CANADIAN TAKING A FULL BLOWN TROPICAL CYCLONE INTO THE CENTRAL APPALACHIANS BY FRIDAY. COULD BE AN INTERESTING END OF THE WEEK. && .AVIATION /19Z SUNDAY THROUGH FRIDAY/... SCT TSTMS...A FEW STRONG...WILL REMAIN POSS MAINLY ACROSS THE SE INTO EARLY EVE. OTHERWISE GENERALLY VFR CONDITIONS WILL PERSIST ACROSS CENTRAL PA. COLD FRONT WILL APPROACH FROM THE WEST THIS EVE AND SLOWLY CROSS CWA OVERNIGHT. AREA OF MVFR STRATOCU/VSBY WILL LIKELY DEVELOP AFTER 04Z UNTIL HUMID AIRMASS IS ERODED BY ADVANCING COLD FRONT MON MORNING. OUTLOOK... MON...LOW CIGS/FOG POSS EARLY OVR W MTNS. THEN VFR. TUE-WED...NO SIG WX EXPECTED. THU-FRI...ISOLD PM THUNDERSTORM IMPACTS POSS W MTNS. && .CTP WATCHES/WARNINGS/ADVISORIES... NONE. && SYNOPSIS...RXR NEAR TERM...RXR SHORT TERM...RXR LONG TERM...LA CORTE AVIATION...RXR
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 1124 AM EDT SUN JUN 2 2013 PAZ019-026>028-035-036-041-042-045-046-049>053-056>059-063>066- 031530- SOUTHERN CENTRE-HUNTINGDON-MIFFLIN-JUNIATA-FULTON-FRANKLIN- NORTHERN LYCOMING-SULLIVAN-SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION- SNYDER-MONTOUR-NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN-SCHUYLKILL- LEBANON-CUMBERLAND-ADAMS-YORK-LANCASTER- 1124 AM EDT SUN JUN 2 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY AHEAD OF A COLD FRONT THAT WILL BE CROSSING THE REGION THIS EVENING. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. PAZ004>006-010>012-017-018-024-025-033-034-037-031530- WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD- NORTHERN CENTRE-CAMBRIA-BLAIR-SOMERSET-BEDFORD-TIOGA- 1124 AM EDT SUN JUN 2 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. RXR
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
216 PM EDT SUN JUN 2 2013
PAZ037-041-021900-
NORTHERN LYCOMING PA-TIOGA PA-
216 PM EDT SUN JUN 2 2013
...A STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL LYCOMING AND
SOUTHEASTERN TIOGA COUNTIES...
AT 214 PM EDT...A STRONG THUNDERSTORM WAS NEAR MORRIS...MOVING
NORTHEAST AT 40 MPH.
WIND GUSTS TO 40 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THIS STORM.
THIS STORM WILL AFFECT BLOSSBURG AND ROSEVILLE.
OTHER NOTABLE LOCATIONS AFFECTED INCLUDE SKI SAWMILL SKI AREA AND
MANSFIELD UNIVERSITY.
THIS WILL IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 6...ROUTE 15...
STATE ROAD 14.
LAT...LON 4194 7690 4190 7691 4181 7689 4161 7687
4143 7732 4159 7741 4196 7693
FORECASTER: COLBERTThe national radar mosaic for the moment the first event began.
1 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds estimated near 60 mph knocked down a power pole onto a car in Blue Ridge Summit near the Mason-Dixon line.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2013Every state in 2013This day in weather historyWarnings in Pennsylvania, June 2013
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: 444300.