An isolated severe thunderstorm produced wind damage near York Springs in Adams County during the late afternoon.
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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.
An isolated severe thunderstorm produced wind damage near York Springs in Adams County during the late afternoon.
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 30, 4:42 PM EST, 8 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 542 PM EDT SUN JUN 30 2013 .SYNOPSIS... A SLOW MOVING AND UNSEASONABLY STRONG UPPER-LEVEL TROUGH WILL KEEP WARM...INCREASINGLY HUMID...AND UNSETTLED CONDITIONS IN PLACE OVER THE REGION RIGHT INTO THE FIRST DAYS OF JULY. && .NEAR TERM /UNTIL 6 AM MONDAY MORNING/... FLASH FLOOD WATCH REMAINS IN EFFECT FOR MY EASTERNMOST COUNTIES TONIGHT THRU MON AFTN...AS GUIDANCE IS COMING INTO LINE FOR A DEEPENING PLUME OF VERY TROPICAL AIR TO CONTINUE TO SURGE INTO THE REGION. AN EXAMINATION OF THE LARGE SCALE PATTERN SEEMS TO INDICATE THE MOST FAVORABLE TIME FRAME FOR LOCALLY EXCESSIVE RAIN WILL BE MONDAY THRU TUESDAY WHEN FOCUS OF HIGHEST PWATS BECOME FOCUSED OVR EASTERN PA BTWN UPPER LVL TROF OVR THE MIDWEST AND ANOMALOUS RIDGE OVR THE E ATLANTIC. HOWEVER...CAN/T RULE OUT LOCALLY EXCESSIVE RAINFALL FROM DIURNALLY DRIVEN CONVECTION THIS EVENING. ALTHOUGH ENDING TIME OF WATCH IS CURRENTLY 18Z MON...MAY EVENTUALLY NEED TO EXTEND IT...AS HVY RAIN PATTERN REMAINS IN PLACE THRU AT LEAST TUES. SREF AND GEFS BOTH BRING A PWAT ANOMALY OF 2-3 STD DEV ABOVE NORMAL UP OVER THE EASTERN HALF OF THE STATE MONDAY...ALONG WITH A STRENGTHENING SOUTHERLY LOW LEVEL FLOW. BOTH SHOW AT LEAST A 30-50% LIKELIHOOD OF GETTING AT LEAST 2 INCHES OF RAIN OVER THE NEXT 24-36 HOURS...WITH THE SREF EVEN SHOWING AN AREA OF 4 INCHES OR MORE POSSIBLE. WITH RECENT HEAVY RAINS...HAVE OPTED FOR A FLASH FLOOD WATCH FOR THE EASTERN AREAS...HOLDING OUT THE POSSIBILITY THAT THIS COULD EVEN NEED TO BE EXPANDED WEST DEPENDING ON WHERE THE EVOLVING UPPER TROUGH EVENTUALLY FUNNELS THE BEST MOISTURE AND FORCING. FOR THIS EVENING...COVERAGE OF SHRA/TSRA CONTINUES TO INCREASE AS OF 20Z...AS WE REACH PEAK HEATING. SPC 20Z MESOANALYSIS SHOWS CAPES ARND 2000J ACROSS THE SE COUNTIES...AND ARND 1000J OVR THE CENTRAL MTNS. DECENT 0-6KM SHEAR ALLOWING CELLS TO PERSIST AND EVEN A FEW SHOWING SOME ROTATION OVR THE NW MTNS. CANNOT RULE OUT SOME STRONGER UPDRAFTS AND THE POSSIBILITY OF AN ISOLATED DAMAGING WIND GUST OR LARGE HAL THRU EARLY EVENING. HOWEVER...EXPECT DIMINISHING COVERAGE/INTENSITY OF CONVECTION BY LATE EVENING. POTENT SHORTWAVE AND ASSOC LL JET ROUNDING BASE OF TROF THIS EVENING IS PRODUCING AN AREA OF HVY RAIN ACROSS GA/SC. AS THIS SHORTWAVE AND ATTENDANT LL JET/PLUME OF TROP MOISTURE LIFTS UP THE EAST SIDE OF THE TROF...EXPECT RAIN AN INCREASING CHANCE OF HVY SHOWERS ARND DAWN ACROSS SOUTHERN PA. IT WILL BE A WARM MUGGY NIGHT WITH LOWS AVERAGING 5-10 DEG ABOVE NORMAL. && .SHORT TERM /6 AM MONDAY MORNING THROUGH 6 PM MONDAY/... MONDAY LOOKS WET ONCE AGAIN WITH THE STAGNANT UPPER TROF AND LOW LEVEL FRONT HANGING OVER THE AREA HELPING SUPPORT A CONTINUATION OF THE SHOWERS AND LOCALLY HEAVY THUNDERSTORMS. ANOMALOUSLY HIGH PWATS AND WEAK MID LEVEL LAPSE RATES SUGGEST LOW TOPPED CONVECTION...BUT THE SHOWERS AND STORMS BEING VERY EFFICIENT RAIN PRODUCERS. HIGH TEMPS MONDAY WILL BE WARM AND MUGGY...BUT ACTUALLY ONLY NEAR OR EVEN A LITTLE BELOW NORMAL FOR EARLY JULY. && .LONG TERM /MONDAY NIGHT THROUGH SUNDAY/... MODEL GUIDANCE CONTINUES TO PREDICT A RETROGRESSION OF THE OHIO VALLEY UPR TROF/WWRD EXPANSION OF THE BERMUDA HIGH INTO THE EAST COAST THROUGH THE LONG TERM PERIOD. THIS SHOULD LEAD TO A GRADUAL DECREASE IN THE DAILY CHANCE OF SHOWERS AND STORMS THROUGH THE PERIOD. HOWEVER...WITH DAILY POPS STARTING FAIRLY HIGH...IT WILL REMAIN FAIRLY ACTIVE CONVECTIVELY INTO MID WEEK. HOWEVER...PRIOR TO THIS...SHOWERS AND STORMS WILL BE FAIRLY WIDESPREAD ONCE AGAIN ON TUESDAY. SOME WITH HEAVY RAIN. HARD TO PINPOINT AMTS AND TIMING...FOR NOW...WILL KEEP MENTION IN HWO...AND NOT HAVE A FLOOD WATCH OUT. DAILY MAX TEMPS WILL BE NEAR NORMAL AND DAILY MINS WILL BE ABOVE NORMAL AS HIGH DEWPOINTS KEEP MORNING LOWS FROM DROPPING OFF TOO FAR. && .AVIATION /22Z SUNDAY THROUGH FRIDAY/... SOME ADJUSTMENTS MADE TO TAFS THE LAST 2 HRS...GIVEN CURRENT STORMS. ADDED TEMPO GROUP ONLY TO SITES WERE STORMS LIKELY TO MOVE ACROSS THE TAF SITE...OTHERWISE JUST LEFT VCTS IN FCST. EARLIER DISCUSSION BELOW. ALL SITES ARE VFR AS OF MID AFTERNOON HAVING FINALLY BURNED OFF THE MORNING LOW CLOUDS AND FOG/HAZE. ALL IN TIME FOR THE SCATTERED SHOWERS AND THUNDERSTORMS TO BEGIN POPPING UP. SITES WILL STAY VFR UNLESS A STORM WANDERS NEARBY CAUSING LOCALIZED REDUCTIONS. SHOWERS AND STORMS WILL DIMINISH SOMEWHAT AFTER SUNDOWN...BUT THE DEEP MOIST FLOW INTO THE REGION WILL KEEP AT LEAST ISOLATED SHOWERS A POSSIBILITY RIGHT INTO MONDAY. LATER TONIGHT WE CAN EXPECT TO SEE THE DEVELOPMENT OF LOW CLOUDS AND SOME FOG...SIMILAR TO THE LAST COUPLE OF NIGHTS. THIS WILL LAST THROUGH MONDAY MORNING AND LIFT ONLY SLOWLY DURING THE DAY MONDAY...WITH MOST AREAS LIKELY REMAINING MVFR FOR MUCH OF NOT ALL OF THE DAY. MORE WIDESPREAD PRECIPITATION EXPECTED MONDAY AND TUESDAY...BEFORE A RETURN TO A MORE SCATTERED SHOWER/THUNDERSTORM PATTERN LATER IN THE WEEK. OUTLOOK... WED-FRI...GENERALLY VFR...BUT STILL WITH AREAS OF LOWER CONDITIONS IN SHOWERS AND THUNDERSTORMS...MAINLY IN THE AFTERNOON. && .CTP WATCHES/WARNINGS/ADVISORIES... FLASH FLOOD WATCH THROUGH MONDAY AFTERNOON FOR PAZ042-051>053- 057>059-065-066. && SYNOPSIS...LA CORTE NEAR TERM...FITZGERALD/LA CORTE SHORT TERM...LA CORTE LONG TERM...GARTNER/MARTIN AVIATION...LA CORTE/MARTIN
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 204 PM EDT SUN JUN 30 2013 PAZ004>006-010>012-017>019-024>028-033>037-041-045-046-049-050-056- 063-064-011815- WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD- NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN- JUNIATA-SOMERSET-BEDFORD-FULTON-FRANKLIN-TIOGA-NORTHERN LYCOMING- SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-PERRY-CUMBERLAND- ADAMS- 204 PM EDT SUN JUN 30 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. SCATTERED THUNDERSTORMS COULD PRODUCE LOCALIZED DAMAGING WIND GUSTS...HAIL...AND HEAVY RAIN. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. A VERY HUMID AIRMASS IN PLACE WILL SUPPORT THE DEVELOPMENT OF SHOWERS AND THUNDERSTORMS. SOME LOCALIZED HEAVY RAINS WILL BE A POSSIBILITY THROUGH MID WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. PAZ042-051>053-057>059-065-066-011815- SULLIVAN-MONTOUR-NORTHUMBERLAND-COLUMBIA-DAUPHIN-SCHUYLKILL-LEBANON- YORK-LANCASTER- 204 PM EDT SUN JUN 30 2013 ...FLASH FLOOD WATCH IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH MONDAY AFTERNOON... 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. FLASH FLOOD WATCH. .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. FLASH FLOOD WATCH. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE STATE COLLEGE PA 342 PM EDT SUN JUN 30 2013 PAZ004-302015- WARREN PA- 342 PM EDT SUN JUN 30 2013 ...A STRONG THUNDERSTORM WILL AFFECT CENTRAL WARREN COUNTY... AT 336 PM EDT...A STRONG THUNDERSTORM WAS NEAR GARLAND...MOVING NORTHEAST AT 15 MPH. WIND GUSTS TO 40 MPH AND PENNY SIZE HAIL ARE POSSIBLE WITH THIS STORM. VERY HEAVY RAIN WILL FALL AND CAUSE WATER TO POND ON ROADS AND FILL POOR DRAINAGE AREAS. THE RAIN WILL CAUSE RAPID RISES ON SMALL STREAMS AND CREEKS. THIS STORM WILL AFFECT YOUNGSVILLE...CHAPMAN STATE PARK AND WARREN. THIS WILL IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 6...ROUTE 62... STATE ROAD 59. LAT...LON 4198 7919 4179 7904 4164 7942 4180 7955 FORECASTER: LA CORTE
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE STATE COLLEGE PA 347 PM EDT SUN JUN 30 2013 PAZ004-302015- WARREN PA- 347 PM EDT SUN JUN 30 2013 ...A STRONG THUNDERSTORM WILL AFFECT CENTRAL WARREN COUNTY... AT 345 PM EDT...A STRONG THUNDERSTORM WAS NEAR BROCKPORT...MOVING NORTHEAST AT 25 MPH. WIND GUSTS TO 40 MPH AND PENNY SIZE HAIL ARE POSSIBLE WITH THIS STORM. VERY HEAVY RAIN WILL FALL FROM THIS STORM AND CAUSE WATER TO POND ON ROADS AND FILL POOR DRAINAGE AREAS. THE RAIN WILL CAUSE RAPID RISES ON SMALL STREAMS AND CREEKS. THIS WILL IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 6...ROUTE 62... STATE ROAD 59. LAT...LON 4198 7919 4179 7904 4164 7942 4180 7955 FORECASTER: LA CORTE
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
438 PM EDT SUN JUN 30 2013
PAZ006-010-011-302145-
CAMERON PA-ELK PA-POTTER PA-
438 PM EDT SUN JUN 30 2013
...A STRONG THUNDERSTORM WILL AFFECT CAMERON...SOUTHEASTERN ELK AND
SOUTHWESTERN POTTER COUNTIES...
AT 435 PM EDT...A STRONG THUNDERSTORM WAS NEAR HICKS RUN...MOVING
NORTHEAST AT 25 MPH.
WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.
THIS STORM WILL AFFECT TRUMAN...CAMERON...EMPORIUM AND SIZERVILLE.
THIS WILL IMPACT STATE ROAD 120.
LAT...LON 4149 7786 4147 7788 4148 7799 4140 7799
4123 7824 4137 7849 4168 7814
FORECASTER: MARTINThe Sterling radar (KLWX), 123 km away, was scanning. The volume nearest the first event began at 21:48 UTC.
1 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds estimated near 60 mph knocked down a few large trees, branches and utility wires along Latimore Creek Road in York Springs. The trees blocked and closed the road and the live wires caught a nearby field on fire. The wind also took a roof off of a chicken coup.
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: 452026.