Widespread severe weather occurred on this day. Thunderstorms initiated in a warm and humid airmass ahead of a strong cold front moving eastward through the Ohio Valley.
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.
Widespread severe weather occurred on this day. Thunderstorms initiated in a warm and humid airmass ahead of a strong cold front moving eastward through the Ohio Valley. One storm produced and EF-0 tornado between Muncy and Hughesville in Lycoming county. In addition, a 24-year-old male was struck by lightning and killed in his driveway in York 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 19, 11:41 AM EST, 1 hour 39 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 1241 PM EDT TUE JUN 19 2007 .SYNOPSIS... WARM AND HUMID AIR WILL CONTINUE FOR ONE MORE DAY AS A COLD FRONT APPROACHES THE REGION. SHOWERS AND A FEW STRONG THUNDERSTORMS WILL CROSS THE ARE LATER THIS AFTERNOON AND OVERNIGHT. LESS HUMID AIR RETURNS WEDNESDAY INTO THE WEEKEND. && .NEAR TERM /UNTIL 9 PM THIS EVENING/... SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 9 PM THIS EVENING. UPDATE TO ZONES AND HWO TO INCLUDE SEVERE THUNDERSTORM WATCH OVER THE NORTHERN HALF OF CWA. WATCH IN EFFECT UNTIL 9 PM. TEMPS CONTINUE TO RISE WITH SUN OVER MOST OF STATE...EVEN AREAS OVER EASTERN PA WITH CLOUDS HAVE BREAKS ON VISIBLE SATELLITE. ADDITIONAL HEATING WITH CURRENT DEW POINTS AND DYNAMICS ENTERING FROM THE WEST WILL ALLOW THUNDERSTORMS TO DEVELOP TO SEVERE LEVELS OVER THE NORTHERN HALF OF PA. THESE STORMS HAVE THE POTENTIAL TO PRODUCE LARGE HAIL AND DAMAGING WINDS...IN ADDITION TO HEAVY RAIN. FRONT STILL HOVERING OVER CENTRAL PA LATE THIS MORNING WITH A FEW SHOWERS AND THUNDERSTORMS IN EASTERN PA. CURRENT (15Z) OBS SHOW TEMPS WARMING INTO THE LOWER 80S IN THE SOUTH AND UPPER 70S IN THE NORTH. DEW POINTS ARE IN THE 60S STATE WIDE WITH THE HIGHEST VALUES IN THE SOUTH-EAST QUADRANT WHERE MID TO UPPER 60S DEW POINTS ARE BEING REPORTED. ARE EXPECTING MORE SHOWERS AND THUNDERSTORMS TO DEVELOP IN THE AFTERNOON WITH HOT AND SOMEWHAT UNSTABLE ATMOSPHERE. && .SHORT TERM /9 PM THIS EVENING THROUGH 6 PM WEDNESDAY/... RAIN FOR THE CRISPY LAWNS ARRIVES THIS AFTERNOON AS A FRONTAL BOUNDARY APPROACHES FROM THE GREAT LAKES. MOIST AIR IN PLACE WITH DEWPOINTS IN THE 60S ACROSS THE CWA. SUNSHINE WILL DESTABILIZE THE ATMOSPHERE TODAY AND ALLOW FOR SCATTERED CONVECTION TO DEVELOP DURING THE AFTERNOON ACROSS THE ENTIRE AREA. 32KM WRF INDICATES AN AREA OF CONVECTION MOVING QUICKLY NORTH INTO WARREN COUNTY BEFORE NOON. OTHERWISE ACTIVITY SHOULD DEVELOP AFTER NOON THROUGH FRONTAL PASSAGE. SLIGHT RISK FOR TODAY ACROSS THE CWA. EXTRAPOLATION OF CURRENT FRONTAL LOCATION AND MOVEMENT...AS WELL AS MODEL AGREEMENT...PLACES IT OVER WESTERN PA AROUND 22Z. BY 06Z/WED THE FRONT WILL HAVE MOVED EAST OF THE AREA. BOTH THE NAM AND GFS INDICATES A WEAK SHORT WAVE MOVING INTO SOUTHEAST PA OR RIGHT ALONG THE BORDER. THIS MAY HELP FIRE CONVECTION ACROSS THAT AREA EARLY THIS AFTERNOON. THE 500 MB TROUGH LAGS THE FRONT UNTIL IT REACHES THE ATLANTIC COAST TOMORROW MORNING SO THE BEST PARAMETERS FOR SEVERE WILL REMAIN WELL TO THE NORTH. HOWEVER...WOULD NOT BE SURPRISED AS STORMS OVER WESTERN PA LAST EVENING WERE ABLE TO DROP A FEW TREES AND HAIL. WITH THE 500 MB TROUGH LAGGING THE SURFACE FRONT...SHOWERS MAY LINGER WEDNESDAY MORNING OVER THE CENTRAL AND EAST. ALL AREAS WILL CLEAR OUT DURING THE DAY WEDNESDAY AS HIGH PRESSURE BUILDS IN. && .LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/... NO SIGNIFICANT CHANGES TO THE LONG TERM THINKING AGAIN TODAY. AT THE BEGINNING OF THE PERIOD A STRONG NORTHERN STREAM TROF WILL BE TEMPORALLY SQUASHING THE UPPER RIDGE THAT HAD BUILD OVER THE EASTERN THIRD OF THE COUNTRY. SHOWERS AND THUNDERSTORMS SHOULD BE ENDING QUICKLY BY WEDNESDAY MORNING AS SURFACE HIGH PRESSURE MOVES OVER THE STATE. FROM WEDNESDAY ON...SURFACE HIGH PRESSURE UNDER FLAT TO SLOWLY BUILDING UPPER HEIGHTS WILL DOMINATE THE REMAINDER OF THE PERIOD. THIS SHOULD SUPPORT MAINLY DRY CONDITIONS WITH ONLY ISOLATED SHWR/TSTM ACTIVITY...AND TEMPERATURES WITHIN A FEW DEGREES OF SEASONAL AVERAGES. SEVERAL SHORTWAVES LOOK TO BE PRESENT IN THE UPPER FLOW AND MAY SERVE TO STIMULATE MORE THAN ISOLATED CONVECTIVE ACTIVITY. AT THIS POINT...GUIDANCE SUGGESTS THAT A SIGNIFICANT TROF WILL MOVE THROUGH THE FLOW ON SATURDAY. HAVE THUS INCREASED POPS SATURDAY AND SATURDAY NIGHT TO CHANCE RANGE. MUCH OF THE REST OF THE TIME KEPT POPS TO SLIGHT CHANCE OR LESS. && .AVIATION /18Z TUESDAY THROUGH SUNDAY/... WDSPRD 3-5SM BR/HZ WITH SOME LCL IFR /2SM/ THIS MORNING SHOULD SLOWLY MIX OUT ACROSS THE WESTERN AND CENTRAL TERMINALS AS SFC DEWPOINTS REMAIN IN THE 60S. DEEP/STRONG LLVL INVERSION WILL KEEP MVFR HZ LOCKED IN ACROSS THE LWR SUSQ VLY THROUGH AT LEAST NOON. SCT-BKN MID LVL CLOUDS WILL BE ON THE INCREASE FROM WEST TO EAST AHEAD OF COLD FRONT MOVG THROUGH THE OH VLY AND LWR GRT LKS. LATEST MOS GUID BACKING OFF OF THE PROLONGED LOWERED /MVFR/ CONDS THIS AFTN AND EVENING...FOCUSING MUCH OF THE CONVECTION WITH A PRE-FRONTAL OR LEE-SIDE TROF THAT SETS UP JUST EAST OF THE SPINE OF THE APPALACHIANS. GIVEN LACK OF A DISCERNIBLE KICKER SHORT WAVE OR UPPER LEVEL DISTURBANCE...CONVECTIVE ACTIVITY MAY BE SLIGHTLY MORE SCT IN NATURE WITH THE BULK OF THE PCPN AND LOWERED CIGS/VIS ALONG OR BEHIND THE ACTUAL COLD FRONT...WHICH WILL NOT ARRIVE UNTL LATE THIS EVENING. WILL TRIM BACK THE MVFR A TAD AND DECREASE CONVECTIVE COVERAGE A BIT IN THE TAFS THIS PACKAGE...WHICH SEEMS TO GO ALONG WITH THE LATEST MOS TRENDS. CANNOT TOTALLY RULE OUT AN ISOLD TSRA BY THE EARLY AFTN INVOF REMNANT QUASI-WARM FRONT. OTHERWISE...TIMING OF BEST TSRA COVERAGE STILL LOOKS TO BE 19-01Z FROM BFD-MDT. A FEW STORMS MAY BE SEVERE. WOULD ANTICIPATE SOME POST-FRONTAL LOWER CIGS AND FOG AS HIGH PRESSURE BEGINS TO BUILD IN FROM THE WEST CLOSER TO 12Z...ESP ACROSS THE ERN TERMINALS WHERE -SHRA WILL LKLY LINGER THE LONGEST. VFR SHOULD DOMINATE THROUGH THE END OF THE WEEK UNTL A MORE POTENT UPPER LEVEL DISTURBANCE MOVES IN FOR SAT. && .CTP WATCHES/WARNINGS/ADVISORIES... NONE. && SYNOPSIS...MARTIN/STEINBUGL NEAR TERM...ONDREJIK/TYBURSKI SHORT TERM...FITZGERALD/TYBURSKI LONG TERM...GARTNER AVIATION...STEINBUGL
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 1240 PM EDT TUE JUN 19 2007 PAZ004>006-010>012-017>019-037-041-042-045-046-201645- WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD- NORTHERN CENTRE-SOUTHERN CENTRE-TIOGA-NORTHERN LYCOMING-SULLIVAN- SOUTHERN CLINTON-SOUTHERN LYCOMING- 1240 PM EDT TUE JUN 19 2007 ...SEVERE THUNDERSTORM WATCH 418 IN EFFECT UNTIL 9 PM EDT THIS EVENING... 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. SEVERE THUNDERSTORM WATCH. THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH...IN EFFECT UNTIL 9 PM THIS EVENING. THUNDERSTORMS WILL INCREASE IN COVERAGE THROUGH THE AFTERNOON AND INTO THE EVENING HOURS ACROSS THE AREA WITH STORMS REACHING A MAXIMUM INTENSITY DURING PEAK HEATING OR BETWEEN 2 AND 8 PM. DAMAGING WIND GUSTS AND LARGE HAIL WILL BE THE MAIN SEVERE WEATHER THREATS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. PAZ024>028-033>036-049>053-056>059-063>066-201645- CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN-JUNIATA-SOMERSET-BEDFORD-FULTON- FRANKLIN-UNION-SNYDER-MONTOUR-NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN- SCHUYLKILL-LEBANON-CUMBERLAND-ADAMS-YORK-LANCASTER- 1240 PM EDT TUE JUN 19 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY AND TONIGHT. A COLD FRONT WILL MOVE EASTWARD ACROSS THE OHIO VALLEY AND LOWER GREAT LAKES THIS AFTERNOON...APPROACHING WESTERN PENNSYLVANIA BY LATE IN THE DAY. THE FRONT WILL THEN TRAVERSE THROUGH THE STATE TONIGHT. THUNDERSTORMS WILL INCREASE IN COVERAGE THROUGH THE AFTERNOON AND INTO THE EVENING HOURS ACROSS THE AREA WITH STORMS REACHING A MAXIMUM INTENSITY DURING PEAK HEATING OR BETWEEN 2 AND 8 PM. DAMAGING WIND GUSTS AND LARGE HAIL WILL BE THE MAIN SEVERE WEATHER THREATS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED LATER THIS AFTERNOON AND EARLY TONIGHT. GARTNER/ONDREJIK
The State College radar (KCCX), 97 km away, was scanning. The volume nearest the first event began at 18:22 UTC.
24 thunderstorm wind, 10 hail, 1 tornado, 1 lightning. Local standard time, as filed.
Trained spotter reported numerous trees down approximately 5 miles northeast of Williamsport.
Penny sized hail reported in Grampian Hills (approx. 1.6 miles north of Williamsport).
Public reported nickel sized hail in Mifflintown.
Bedford county emergency manager reported power lines down near Bedford Valley Road approximately 3 miles west-southwest of Lake Gordon.
Public reported penny sized hail in Lewistown.
Snyder county 911 center reported trees and a power pole down in Beaver Springs.
Trained spotter reported quarter sized hail in Mifflinburg.
NWS employee reported penny sized hail in Mifflinburg.
NWS employee reported wind damage to business signs at a bowling alley and West Milton Bank in Mifflinburg. A roof was also removed from a home near JCT of Route 45 and Forest Hill Road.
Public reported penny sized hail in St. Thomas.
Local media reported penny sized hail on Route 180 near Muncy.
Snyder 911 centered reported trees and wires down in Selinsgrove.
Northumberland 911 center reported multiple trees and wires down along Route 147 near Sunbury.
NWS Storm Survey Team confirmed EF-0 Tornado embedded in larger area of downburst wind damage between Muncy and Hughesville. Dozens of trees were knocked down along with minor damage to structures. Average path width was 50 to 70 yards with an approximate length of 1 mile. Peak winds were estimated to be between 65 to 70 mph. There were no injuries or fatalities.
Cumberland county 911 center reported widespread tree and power-line damage.
Columbia county official reported penny sized hail in Bloomsburg.
York county official reported nickel sized hail in Dillsburg.
Public reported a tree down on a porch approximately 4 miles north of Dillsburg.
Public weather observer measured a 71 MPH wind gust with anemometer. Numerous trees were reported down across Lower Allen Township...including one that fell on a house.
Perry county 911 center reported trees down in Landisburg and Millerstown.
Dauphin county 911 center reported trees down in various parts of Harrisburg.
Huntingdon county 911 center reported trees down near Spruce Creek.
Public reported penny sized hail in Bellefonte.
At approximately 630 PM, a 24 year old male was struck by lightning in his driveway in Fairview Township, York County. He died early on June 20th.
York county 911 center reported trees down in Hallam.
Northumberland county 911 center reported trees down on Route 487 near Knobles Amusement Park in Elysburg.
Lancaster county 911 center reported trees and wires down in Conoy Township near Bainbridge.
Public reported trees down in Middletown.
Lebanon county 911 reported trees and wires down in Campbelltown.
Clinton county 911 center reported trees and wires down in Haneyville or approximately 6 miles east of Hyner.
Clearfield county 911 center reported multiple trees down in Clearfield.
Clearfield county emergency manager reported trees and wires down in Mahaffey.
Clearfield county 911 center reported multiple trees down along Route 879 from Lecontes Mills to Karthaus.
Centre county 911 center reported large limbs down in Pine Glen.
Clinton county 911 center reported several trees down in Renovo.
Lancaster county emergency manager reported trees down on wires.
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 |
|---|---|---|---|---|---|
| Lightning, York | 2007-06-19 | 24 | Male | Outside/Open Areas | Direct |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2007Every state in 2007This day in weather historyThe tornado archive for Pennsylvania, 2007Warnings in Pennsylvania, June 2007
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: 36423, 32679, 32680, 36424, 32681, 36425, 32682, 32683, 36426, 32684, 32685, 36427, 36428, 33189, 36429, 32686, 32688, 36430, 36431, 36432, 36433, 36434, 32701, 32836, 36435, 36440, 36443, 36436, 36437, 36438, 36442, 36444, 36445, 36447, 36448, 36449.