A strongly forced, narrow line of heavy showers raced eastward across the area during the predawn and early morning hours. Despite limited instability and no lightning detected with the shallow convection, the presence of an intense wind field in excess of 50 knots just above the surface promoted corridors of wind damage with the passage of the line.
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.
A strongly forced, narrow line of heavy showers raced eastward across the area during the predawn and early morning hours. Despite limited instability and no lightning detected with the shallow convection, the presence of an intense wind field in excess of 50 knots just above the surface promoted corridors of wind damage with the passage of the line.
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 Nov 1, 1:02 AM EST, 2 hours 38 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 202 AM EDT FRI NOV 1 2013 .SYNOPSIS... THE SHORT TERM ISSUE IS THE DEEP CYCLONE TRACKING TO OUR NORTH AND THE STRONG FRONT WHICH WILL PRODUCE RAIN AND GUSTY WINDS EARLY FRIDAY. BEHIND THE FRONT A TROUGH WILL DEVELOP OVER THE EAST AND GET REINFORCED WITH COLDER AIR SATURDAY-SUNDAY. THIS TROUGH IS PROGRESSIVE AND HEIGHTS SHOULD RISE AS DEEP TROUGH DEVELOPS IN THE SOUTHWEST AND OUR COLD WEEKEND TROUGH TRACKS TO OUR EAST. THE 500 MB HEIGHTS SHOULD BE ABOVE NORMAL MOST OF NEXT WEEK. && .NEAR TERM /UNTIL 10 AM THIS MORNING/... UPDATED FORECAST WITH EMPHASIS ON THE WINDS ALONG AND BEHIND THE FRONT. MODEST TEMPERATURE AND QPF TWEAKS AND KEPT THE MENTION OF ISOLATED THUNDER. MOST OF THE ACCUMULATING RAINFALL WILL FALL IN THIS PERIOD AND SHOULD END IN THIS PERIOD IN WESTERN AREAS. SOME RAINFALL COULD LINGER INTO LATE MORNING OR EARLY AFTERNOON IN THE EXTREME EASTERN AREAS. KEY TO THE FORECAST IS THE RAPID CYCLONE TRACKING ACROSS THE LAKES WITH -4 TO -5 SIGMA MEAN SEA LEVEL PRESSURE ANOMALIES. THE STRONG GRADIENT AHEAD OF THIS SYSTEM IS PRODUCING WINDS IN THE 70-80KT RANGE AHEAD OF THE COLD FRONT. THE TOTAL WIND ANOMALIES IN THE MODELS-GEFS-SREF-NAEFS ARE ALL +5 OR GREATER SIGMA LEVEL OVERNIGHT. IN THE NAEFS THE WINDS OF THIS MAGNITUDE HAVE ABOUT A 30 YEAR RETURN PERIOD. EXTREMELY RARE. OUTSIDE OF CONVECTION IT IS OFTEN HARD TO GET WINDS AHEAD OF COLD FRONTS TO THE SURFACE. ALONG AND BEHIND THE FRONT THE 850 HPA WINDS ARE NOT AS STRONG BUT STILL +3 TO +4 SIGMA AND 50-60KTS. WITH THE SLOPED ISENTROPES THERE IS A HIGHER PROBABILITY OF MIXING THESE WINDS TO THE SURFACE. FRONTAL PASSAGE IN WEST SHOULD BE A FEW HOURS EITHER SIDE OF 6AM. THERE IS ALSO AN ISALLOBARIC HIGH FORECAST TO BE ABOUT 8-9 MB OVER OH AND WESTERN PA AND A STRONG ISALLOBARIC GRADIENT OVER CENTRAL PA IN THE 5AM TO ABOUT 2 PM TIME RANGE. THIS FAVORS A PERIOD OF STRONG GUSTY WINDS BEHIND THE FRONT. MOST AREAS IN CENTRAL PA WILL SEE WIND GUSTS IN THE 30-39 KT RANGE. WE ISSUED A HIGH WIND ADVISORY FOR THE WESTERN MOUNTAINS AND NORTHERN TIER. HIGHEST PROBABILITY FOR WINDS OVER 40 KTS WOULD BE IN HIGHER ELEVATIONS AND JUST TO THE LEE OF THE HIGHER ELEVATIONS. IN THIS THE LEE SLOPES WOULD BE THE EASTERN SLOPES. && .SHORT TERM /10 AM THIS MORNING THROUGH 6 PM SATURDAY/... THE GUSTY WINDS WILL CONTINUE INTO THIS PERIOD BUT WILL DIMINISH WEST TO EAST IN THE AFTERNOON AND INTO THE EVENING. THE THREAT OF WIND GUSTS OVER 40KTS SHOULD END AROUND NOON. ALL SHORT RANGE GUIDANCE IMPLIES LOW PROBABILITY OF RAIN IN WEST AND NOT MUCH OF RAIN THREAT IN THE EAST MUCH AFTER ABOUT NOON. A GUSTY LATE MORNING AND EARLY AFTERNOON. THE AIR BEHIND THE FRONT IS NOT VERY COLD. SHOULD BE AT LEAST PARTLY SUNNY...SOME LOCATIONS WILL BE SUNNY WITH CLOSE TO NORMAL TEMPERATURES. A BIT WINDY...NOT A GOOD DAY TO BICYCLE OR RAKE LEAVES...BUT OTHERWISE SHOULD BE A NICE DAY OVER MOST OF THE AREA AND THE WINDS SHOULD REALLY ABATE BY EVENING. && .LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/... TROUGH BUT PROGRESSIVE UPPER FLOW PATTERN WILL DOMINATE THE EASTERN U.S. INTO THE WEEKEND BEFORE HEIGHTS RISE EARLY NEXT WEEK. A SUBTROPICAL RIDGE IS FORECAST TO BUILD INTO THE SOUTHEAST COAST NEXT WEEK AS WELL AS MORE SHORTWAVE ENERGY DIGS INTO THE WESTERN AND CENTRAL PARTS OF THE COUNTY. THE MAIN MID-UPPER TROUGH AXIS WILL SHIFT EWD FROM THE GRT LKS INTO THE NORTHEAST STATES SAT NGT INTO SUNDAY. THE DEVELOPING NW FLOW WILL DIRECT SEASONABLY COLD AIR DOWNWIND OF THE LAKES AND PROMOTE LAKE EFFECT RAIN/SNOW SHOWERS OVER THE WESTERN HIGHLANDS AND CENTRAL MTNS...PRIMARILY LATER SATURDAY INTO EARLY SUNDAY. HIGH PRES BUILDING INTO THE AREA SHOULD SPELL AN END TO THIS ACTIVITY BY SUNDAY NIGHT. THE SFC RIDGE AXIS WILL MIGRATE EWD FROM THE CNTRL APLCHNS TO ALONG THE NORTHEAST /MID-ATLC COAST THRU EARLY NEXT WEEK. VEERING LOW- LEVEL FLOW TO THE EAST-SE MAY LEAVE THE AREA SUSCEPTIBLE TO SOME LOW CLOUDS WITHIN A MARITIME FLOW REGIME. WITH THE RIDGING AT THE SFC AND ALOFT...EXPECT ANY SIGNIFICANT PCPN TO REMAIN WEST OF PA THRU MIDWEEK. CLEAR SKIES SHOULD LEAD TO CLEAR SKIES AND COLD MORNINGS MONDAY AND TUESDAY...FOLLOWED BY QUICKLY MODERATING TEMPS BY MID WEEK. && .AVIATION /06Z FRIDAY THROUGH TUESDAY/... MIX OF VFR TO MVFR CIGS ACROSS CENTRAL PA ATTM. EXPECT CONDITIONS TO REMAIN THIS WAY...UNTIL A STRONG COLD FRONT SWEEPS THROUGH THE AREA BETWEEN 08Z AND 13Z FROM WEST TO EAST. EXPECTING A BAND OF MVFR TO IFR CIGS AND VSBYS TO ACCOMPANY THE FRONT...WITH A SHARP...WELL DEFINED CONVECTIVE LINE...THEN A FAIRLY RAPID RETURN TO MVFR THEN VFR CONDITIONS IN MOST AREAS. BIGGER STORY IS STRONG WIND FIELDS AHEAD...ALONG AND BEHIND FRONT. GOOD LLWS CONDITIONS ACROSS ALL TAF LOCATIONS...WITH VERY STRONG LL SOUTHERLY JET OF 50-70 KTS AHEAD OF THE FRONT. WIND GUSTS OF 40-50 KNOTS WILL LIKELY ACCOMPANY THE FRONT...WITH A WIND SHIFT FROM SOUTH TO WSW. GUSTY WINDS OF 30-40 KTS FROM THE WSW WILL FOLLOW FROPA...SO EVEN THOUGH LLWS PRETTY MUCH ENDS A FEW HOURS AFTER FROPA...WINDS SFC AND ALOFT WILL STILL BE VERY STRONG WITH GOOD MIXING TO THE SURFACE. CURRENT TIMING OF FROPA IS ABOUT 08Z AT KBFD...10Z AT KUNV...AND 11Z-13Z KIPT/KMDT. QUICK DROP OFF IN WINDS LATER THIS AFTERNOON AND EVENING...WITH A RETURN TO VFR CONDITIONS. WINDS SHIFTING MORE TO THE WEST LATER FRIDAY NIGHT INTO EARLY SATURDAY MAY RESULT IN A RETURN TO MVFR CIGS ACRS THE WRN TAFS. OUTLOOK... SAT...SCT/NMRS LK EFF SHRA NW...MVFR LIKELY. VFR SE. GUSTY WNW WINDS. SUN...MVFR/LK EFF -SHRA SHRA NW EARLY...THEN BCMG VFR. MON-TUE...MAINLY VFR UNDER SFC HIGH PRES. && .CTP WATCHES/WARNINGS/ADVISORIES... WIND ADVISORY FROM 5 AM EARLY THIS MORNING TO NOON EDT TODAY FOR PAZ004>006-010>012-017-018-024-033-037-041-042. && SYNOPSIS...GRUMM NEAR TERM...GRUMM/STEINBUGL SHORT TERM...GRUMM LONG TERM...LAMBERT/GARTNER AVIATION...JUNG/STEINBUGL
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 423 AM EDT FRI NOV 1 2013 PAZ004-020830- WARREN- 423 AM EDT FRI NOV 1 2013 ...WIND ADVISORY IN EFFECT FROM 5 AM UNTIL NOON EDT TODAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WIND ADVISORY. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. PAZ058-059-065-066-020830- SCHUYLKILL-LEBANON-YORK-LANCASTER- 423 AM EDT FRI NOV 1 2013 ...WIND ADVISORY IN EFFECT FROM 6 AM UNTIL 2 PM EDT THIS AFTERNOON... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. WIND ADVISORY. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. PAZ057-020830- DAUPHIN- 423 AM EDT FRI NOV 1 2013 ...SEVERE THUNDERSTORM WATCH 558 IN EFFECT UNTIL 10 AM EDT THIS MORNING... ...WIND ADVISORY IN EFFECT FROM 6 AM UNTIL 2 PM EDT THIS AFTERNOON... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TODAY 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. WIND ADVISORY. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. PAZ005-006-010>012-017-018-024-033-037-041-042-020830- MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD- NORTHERN CENTRE-CAMBRIA-SOMERSET-TIOGA-NORTHERN LYCOMING-SULLIVAN- 423 AM EDT FRI NOV 1 2013 ...SEVERE THUNDERSTORM WATCH 558 IN EFFECT UNTIL 10 AM EDT THIS MORNING... ...WIND ADVISORY IN EFFECT FROM 5 AM UNTIL NOON EDT TODAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TODAY 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. WIND ADVISORY. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. PAZ019-025>028-034>036-045-046-049>053-056-063-064-020830- SOUTHERN CENTRE-BLAIR-HUNTINGDON-MIFFLIN-JUNIATA-BEDFORD-FULTON- FRANKLIN-SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR- NORTHUMBERLAND-COLUMBIA-PERRY-CUMBERLAND-ADAMS- 423 AM EDT FRI NOV 1 2013 ...SEVERE THUNDERSTORM WATCH 558 IN EFFECT UNTIL 10 AM EDT THIS MORNING... ...WIND ADVISORY IN EFFECT FROM 6 AM UNTIL 2 PM EDT THIS AFTERNOON... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TODAY 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. WIND ADVISORY. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
300 AM EDT FRI NOV 1 2013
PAZ004-010745-
WARREN PA-
300 AM EDT FRI NOV 1 2013
...SHOWERS WITH STRONG WIND GUSTS WILL AFFECT WARREN COUNTY...
AT 255 AM EDT...AN AREA OF SHOWERS WAS MOVING INTO WESTERN WARREN
COUNTY. STRONG WINDS...GUSTING TO BETWEEN 40 AND 45 MPH FROM THE
SOUTH...WILL OCCUR OVER THE COUNTY WITH THESE SHOWERS. STRONGEST
WINDS WILL BE ACROSS HIGHER ELEVATIONS.
THIS WILL AFFECT GRAND VALLEY...TIDIOUTE...GARLAND...YOUNGSVILLE AND
SUGAR GROVE.
THIS WILL IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 6...ROUTE 62...
STATE ROAD 59.
LAT...LON 4200 7892 4184 7891 4183 7895 4180 7895
4162 7896 4165 7962 4179 7963 4200 7960
FORECASTER: JUNGThe State College radar (KCCX), 67 km away, was scanning. The volume nearest the first event began at 08:38 UTC.
22 thunderstorm wind. Local standard time, as filed.
A line of heavy showers with estimated winds near 60 mph knocked down trees and wires in DuBois.
A line of heavy showers with estimated winds near 60 mph knocked down 15 trees in the Johnstown area.
A line of heavy showers with estimated winds near 60 mph knocked down trees and wires in Somerset and several other parts of the county.
A line of heavy showers with estimated winds near 60 mph knocked down trees and wires in Irvona.
A line of heavy showers with estimated winds near 60 mph knocked down trees near Philipsburg.
A line of heavy showers with estimated winds near 60 mph knocked down trees and wires in Altoona and Newry.
A line of heavy showers with estimated winds near 60 mph knocked down trees and wires in Bedford. The downed trees resulted in minor structural damage to some residential homes.
A line of heavy showers with estimated winds near 60 mph knocked down trees in Everett.
A line of heavy showers with estimated winds near 60 mph knocked down trees in Huntingdon.
A line of heavy showers with estimated winds near 60 mph knocked down trees in Keating.
A line of heavy showers with estimated winds near 60 mph knocked down trees and wires near Whipple Dam State Park.
A line of heavy showers with estimated winds near 60 mph knocked down trees in Mount Union.
A line of heavy showers with estimated winds near 60 mph knocked down trees in Spring Mills.
A line of heavy showers with estimated winds near 60 mph knocked down trees and wires in Thompson Township near Needmore.
A line of heavy showers with estimated winds near 60 mph knocked down trees in Loganton.
A line of heavy showers with estimated winds near 60 mph knocked down trees in Wellsboro.
A line of heavy showers with estimated winds near 60 mph knocked down trees in Mifflin.
A line of heavy showers with estimated winds near 60 mph knocked down trees in Catawissa and Benton.
A line of heavy showers with estimated winds near 60 mph knocked down trees in Shamokin.
A line of heavy showers with estimated winds near 60 mph knocked down trees near Gettysburg.
A line of heavy showers with estimated winds near 60 mph knocked down trees in Pottsville and Frackville.
A line of heavy showers with estimated winds near 60 mph knocked down trees in Lancaster city.
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, November 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: 479161, 479162, 479164, 479163, 479166, 479168, 479165, 479167, 479169, 479173, 479172, 479171, 479170, 479174, 479175, 479176, 479177, 479178, 479179, 479180, 479182, 479181.