1 flash flood, as filed by the National Weather Service.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 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 25, 9:26 AM EST, 2 hours 34 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 1026 AM EDT SUN JUN 25 2006 .SHORT TERM /REST OF TODAY THROUGH TONIGHT/... MINOR MODIFICATIONS WILL BE MADE TO GRIDDED WEB IMAGES AND TEXT FORECASTS THROUGH TONIGHT. THE NEXT 24-36 HRS WILL FEATURE WIDESPREAD RAINFALL OF 1-2 INCHES WITH LOCALLY HEAVIER 3-5 INCH AMOUNTS CAUSING FLOODING OF SOME STREAMS. THESE AMOUNTS ARE REFLECTED WELL WITHIN THE SREF PLUME DIAGRAMS OF CUMULATIVE PRECIP AND MARFC DAY 1 AND DAY 2 AMOUNTS. THE BEST CHC FOR THE HEAVY RAIN THROUGH EARLY THIS EVENING APPEARS TO BE IN THE CORRIDOR ABOUT 70NM WIDE...EXTENDING FROM JUST NORTH OF KHGR TO KSEG...WHERE MODELS SHOW THE THE STRONGEST ISENT LIFT ALONG THE 300-310K SFCS AT THE NOSE OF A 35-40KT SSW LLVL JET BEING LIFTED OVER THE QUASI STNRY SFC FRONT. THIS AXIS OF HEAVY RAIN...AND THE SFC FRONT ITSELF WILL BE SHIFTING SLOWLY NORTH AND WEST DURING THE EARLY PART OF THE WEEK AS THE UPPER FLOW BACK FROM SW TO SOUTH AHEAD OF TWO DISTINCT... STRONG SHORT WAVES CARVING OUT A MEAN TROUGH ACROSS THE MIDWEST. THE CURRENT FLASH FLOOD WATCH CONFIGURATION AND EXPIRATION TIMING LOOKS IN GOOD SHAPE FOR NOW. WILL REASSESS PRIOR TO THE ISSUANCE OF THE LATE AFTERNOON FORECAST PACKAGE...THE HEAVY QPF POTENTIAL FOR SEVERAL COUNTIES ACROSS SCENT PENN AND THE LOWER SUSQ VALLEY TO SEE IF THE INITIAL FLASH WATCH /EXPIRING AT 00Z TONIGHT/ REQUIRES AN EXTENSION INTO MONDAY. && .PREV DISCUSSION... /ISSUED 301 AM EDT SUN JUN 25 2006/ SHORT TERM /TODAY/... MAIN FOCUS OF THIS MORNINGS FORECAST IS DETERMINING THE MOVEMENT OF QUASI- STATIONARY BOUNDARY OVER MY SOUTHERN COUNTIES...AND TIMING THE IMPACT OF UL SHORTWAVES TRACKING ACROSS THE REGION TO ASCERTAIN LOCATION OF GREATEST FLOODING THREAT. RIGHT ENTRANCE REGION OF STRENGTHENING UL JET OVR NORTHERN NEW ENGLAND LIFTING SLOWLY NORTHWARD TODAY IN RESPONSE TO AMPLIFYING OFFSHORE UPPER RIDGE. PLUME OF ANOMALOUS PWATS (+2 TO +3 S.D. COMPARED TO NORMAL) FEEDING INTO THIS AREA AS THE BOUNDARY LIFTS NORTHWARD...PRODUCING TROPICAL DOWNPOURS. BEST 925 TO 850 MB MOISTURE CONVERGENCE LIFTS NORTHWARD TO A LINE EXTENDING FROM THE ENDLESS MOUNTAINS IN NE PA THROUGH LAUREL FOOTHILLS AND SOUTH CENTRAL MOUNTAIN REGION BY 00 UTC MON. CURRENT WATCH TIMES HAD THIS EXACT SCENARIO IN MIND SO NO NEED FOR ANY TWEAKING THERE. AFT 00Z MON...FLOODING THREAT SHIFTS ALONG THE CONVERGENCE AREA MENTIONED ABOVE (FROM THE ENDLESS MOUNTAINS TO THE LAUREL HIGHLANDS VS THE MIDDLE TO LOWER SUSQ. CURRENT HEADLINES WILL REMAIN THE SAME WITH THIS PACKAGE. LONG TERM /TONIGHT THROUGH SATURDAY/... ADDITIONAL SHORTWAVES WILL LIFT NORTHWARD ACROSS THE REGION TONIGHT...WITH RICH 2.0+ PWATS FEEDING INTO S CENTRAL PA AS OFFSHORE UPPER RIDGE AMPLIFIES. BEST CONVERGENCE WILL CONTINUE TO SHIFT NORTHWARD INTO THE FINGERLAKES AND UPSTATE NEW YORK REGIONS. BUT DEEP LAYER MOISTURE (PWATS +2 TO +3 S.D. ABOVE NORMAL) WILL CONTINUE TONIGHT AND MONDAY CONTINUING THE HEAVY RAIN THREAT AND FFA FOR MY CENTRAL PA COUNTIES...ALIGNED NNE TO SSW WITH THE 5H SHEAR AXIS. NO CHANGES THIS MORNING TO THE LONG TERM AS BOUNDARY WILL PLAGUE US THROUGH AT LEAST MIDWEEK...PROPAGATING WESTWARD THEN EASTWARD AND PROVIDING THE FOCUS FOR THE MOST PERSISTENT AND HEAVIEST RAIN OVER THE NEXT SEVERAL DAYS. LITTLE IMPROVEMENT SEEN IN LATEST DETERMINISTIC GFS RUNS FOR THE REMAINDER OF THE WEEK...AS EXCESSIVE DEEP LAYER MOISTURE REMAINS IN PLACE ALONG WITH BROAD SOUTHWEST FLOW ALOFT BETWEEN CENTRAL AND WRN GLAKES CLOSED UPPER TROF AND MASSIVE OFFSHORE UPPER RIDGE. UNSETTLED UNTIL FURTHER NOTICE. AVIATION... WIDESPREAD VFR CONDITIONS EARLY THIS MORNING..SAVE SOME LOCALIZED FOG WITH MVFR VSBY...WILL GIVE WAY TO DETERIORATING CONDITIONS FROM SOUTHEAST TO NORTHWEST THROUGH THE MORNING HOURS. SHOWERS NOW DEVELOPING OVER THE SRN TIER COUNTIES WILL PRODUCE ISOLATED MFVR VSBY AND CIGS. MVFR VSBYS AND CIGS WILL BECOME MORE WIDESPREAD DURING THE POST DAWN HOURS AS SHOWER AND TSTMS INCREASE IN COVERAGE FROM SOUTHEAST TO NORTHWEST AS SHORTWAVE TROF APPROACHES THE REGION. WIDESPREAD RAIN AND FOG AND ASSOCIATED MVFR/SCT IFR CONDITIONS WILL PERSIST INTO MONDAY MORNING. THE HIGHEST CHANCES OF PRECIPITATION AND ASSOCIATED POOR FLYING CONDITIONS WILL BE ACROSS THE SOUTHEASTERN THREE QUARTERS OF CENTRAL PENNSYLVANIA. && .CTP WATCHES/WARNINGS/ADVISORIES... FLASH FLOOD WATCH FOR PAZ034>036-056>059-063>066 UNTIL 8 PM SUNDAY. FLASH FLOOD WATCH FOR PAZ006-011-012-017>019-024>028-033-037- 041-042-045-046-049>053 UNTIL 8 PM MONDAY. && SHORT TERM...LAMBERT
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 430 AM EDT SUN JUN 25 2006 PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046- 049>053-056>059-063>066-260830- WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD- NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN- JUNIATA-SOMERSET-BEDFORD-FULTON-FRANKLIN-TIOGA-NORTHERN LYCOMING- SULLIVAN-SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR- NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN-SCHUYLKILL-LEBANON- CUMBERLAND-ADAMS-YORK-LANCASTER- 430 AM EDT SUN JUN 25 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT A STALLED FRONTAL BOUNDARY WILL FOCUS SHOWERS AND THUNDERSTORMS WITH LOCALLY HEAVY RAINFALL FROM THE SOUTHERN TIER OF CENTRAL PENNSYLVANIA TO THE MIDDLE SUSQUEHANNA RIVER VALLEY. AS A RESULT...A FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH EARLY SUNDAY EVENING OVER THE SOUTH...AND CONTINUING OVERNIGHT FOR MUCH OF THE REST OF CENTRAL PENNSYLVANIA. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY WITH THE STALLED FRONT DRAPED ACROSS EASTERN AND SOUTHERN PORTIONS OF PENNSYLVANIA... THE HEAVY RAINFALL THREAT WILL CONTINUE WELL INTO THE COMING WORK WEEK. CURRENTLY...FLASH FLOOD WATCHES REMAIN IN EFFECT FOR A LARGE PORTION OF CENTRAL PENNSYLVANIA THROUGH MONDAY EVENING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED.
The Sterling radar (KLWX), 108 km away, was scanning. The volume nearest the first event began at 17:01 UTC.
1 flash flood. Local standard time, as filed.
Heavy rain caused flash flooding throughout Franklin County. The Route 11 underpass in Greencastle was flooded, along with a number of roads in Waynesboro. 2 water rescues were performed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2006Every state in 2006This day in weather historyWarnings in Pennsylvania, June 2006
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: 5518609.