A combination of snow melt and rainfall caused flooding due to ice jams across parts of northwest Pennsylvania.
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 PBZ wrote it up.
A combination of snow melt and rainfall caused flooding due to ice jams across parts of northwest Pennsylvania.
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 Pittsburgh, PA wrote its last area forecast discussion before the first event at Feb 8, 2:31 PM EST, 1 hour 57 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 231 PM EST SUN FEB 8 2009 .SYNOPSIS... HIGH PRESSURE WILL BRING DRY WEATHER TONIGHT INTO MONDAY BEFORE A SERIES OF LOW PRESSURE SYSTEMS AFFECTS THE REGION MID WEEK. TEMPERATURES ARE EXPECTED TO REMAIN ABOVE NORMAL THROUGH THE WORK WEEK. && .NEAR TERM /THROUGH MONDAY/... HIGH PRESSURE BUILDING IN FROM THE WEST SHOULD ALLOW FOR ALL REMAINING CLOUD COVER TO QUICKLY DISSIPATE THIS EVENING. WINDS SHOULD GO CALM AS THE HIGH MOVES DIRECTLY OVERHEAD AND PUSHES OFF TO THE SOUTHEAST. MAIN ISSUE FOR TONIGHT IS HOW MUCH...IF ANY...FOG FORMATION WILL OCCUR. NAM BUFKIT PROFILES SHOW A VERY THIN LAYER OF SURFACE SATURATION (<1000 FT) FROM PITTSBURGH NORTH...WHILE OTHER LOCATIONS DO NOT REACH FULL SATURATION. GFS IS NOT HINTING AT ANY FOG. ANOTHER REASON FOR CONSIDERING FOG IS ALL OF THE SNOWMELT THAT HAS OCCURRED OVER THE LAST 2 DAYS AND THE EXTRA MOISTURE IN THE ATMOSPHERE. FOR NOW...WILL NOT PUT FOG IN THE FORECAST AND ALLOW EVENING SHIFT TO DECIDE WHETHER THIS NEEDS TO BE ADDED. ANY FOG THAT FORMS WOULD QUICKLY SCATTER OUT MONDAY MORNING...AND SKIES WILL BE MOSTLY SUNNY BY THE AFTERNOON. TEMPERATURES WILL AVERAGE ABOUT 5 DEGREES ABOVE NORMAL TONIGHT...AND 10 DEGREES ABOVE NORMAL ON MONDAY. && .SHORT TERM /MONDAY NIGHT THROUGH WEDNESDAY/... A COLD FRONT IS EXPECTED TO PASS THROUGH THE REGION LATE MONDAY NIGHT INTO TUESDAY. WILL MAKE SOME MINOR ADJUSTMENTS FOR TIMING...BUT MODELS ARE IN GOOD AGREEMENT WITH THE FRONTAL PASSAGE. BAND OF MOISTURE ASSOCIATED WITH THE FRONT IS DEEP BUT SOMEWHAT NARROW...SO RAINFALL SHOULD NOT OCCUR FOR AN EXTENDED PERIOD OF TIME. PRECIPITATION SHOULD REMAIN RAIN IN MOST LOCATIONS...WITH LOCATIONS NORTH OF I-80 POSSIBLY SEEING SOME SNOW. ANOTHER LOW PRESSURE SYSTEM IS EXPECTED TO DEVELOP ACROSS THE CENTRAL PLAINS ON TUESDAY AND MOVE INTO LOWER MICHIGAN BY WEDNESDAY AFTERNOON. THE ASSOCIATED WARM FRONT SHOULD PASS THROUGH TUESDAY NIGHT...BUT FORCING WITH THIS FRONT IS NOT VERY STRONG...AND FEEL THAT THE GOING LOW CHANCE POPS SHOULD HANDLE THIS WELL. THERE SHOULD BE A BIT OF A DRY PERIOD ON WEDNESDAY BEFORE THE COLD FRONT APPROACHES THE AREA WEDNESDAY AFTERNOON INTO THE EVENING. WINDS SHOULD PICK UP IN APPROACH OF THE FRONT...AND COULD BE A BIT GUSTY DURING THE DAY ON WEDNESDAY. TEMPERATURES WILL CONTINUE TO BE 15-20 DEGREES ABOVE NORMAL...ALTHOUGH RECORD HIGHS DO NOT APPEAR TO BE IN JEOPARDY OF BEING BROKEN. && .LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/... THE COLD FRONT WILL SWEEP ACROSS THE REGION WEDNESDAY NIGHT. WILL KEEP LIKELY POPS INTO THURSDAY MORNING...WITH PRECIP DIMINISHING THURSDAY AFTN...ENDING THURSDAY NIGHT AS THE FRONT EXITS THE REGION. WITH THE FRONT BEING PACIFIC IN ORIGIN...EXPECT TEMPERATURES TO REMAIN SLIGHTLY ABOVE NORMAL THROUGH FRIDAY WITH DRY CONDITIONS. A REINFORCING FRONTAL SYSTEM IS PROGGED TO CROSS THE AREA SATURDAY BRINGING A CHANCE OF RAIN/SNOW SHOWERS ALONG WITH COOLER TEMPERATURES. MAINLY DRY AND COOL CONDITIONS WILL PREVAIL FOR NEXT SUNDAY. && .AVIATION /20Z SUNDAY THROUGH FRIDAY/... MVFR CONDITIONS WILL CONTINUE THROUGH EARLY THIS AFTERNOON...WITH CLOUDS THINNING OUT BY LATE AFTN NORTH AND BY 00Z OR SO SOUTH AD DRIER AIR WORKS IN. MOSTLY CLEAR SKIES WILL PREVAIL FROM THIS EVENING THROUGH MONDAY UNDER HIGH PRESSURE. OCCASIONALLY GUSTY NW WINDS WILL SUBSIDE THIS EVENING AS THE SURFACE HIGH BUILDS IN. GIVEN SOME RESIDUAL MOISTURE...ENHANCED BY SNOW COVER ACROSS THE NORTH...WILL INSERT SOME PATCHES OF MVFR FOG FOR TERMINALS FKL AND DUJ OVERNIGHT TNGT. LOW PRESSURE WILL ENTER THE REGION BY LATE MONDAY NIGHT...LINGERING INTO THURSDAY...BRINGING SCATTERED TO NUMEROUS SHOWERS AND PERIODS OF MVFR/IFS CONDITIONS. THE GREATEST RISK OF RESTRICTIONS WILL EXIST WEDNESDAY NIGHT AS A COLD FRONT CROSSES THE AREA. HIGH PRESSURE IS PROGGED TO BUILD BACK OVER THE REGION THURSDAY NIGHT/FRIDAY FOR VFR CONDITIONS. && .HYDROLOGY... AFTER TEMPERATURES DROP BELOW FREEZING TONIGHT...TEMPERATURES ARE NOT FORECAST TO DROP MUCH BELOW FREEZING AGAIN UNTIL THURSDAY NIGHT. THIS WILL ALLOW SNOW MELT TO BE NEARLY NONSTOP THIS COMING WEEK. THE NOHRSC SNOW MODEL ESTIMATES THAT MANY LOCATIONS MELTED HALF AN INCH TO AN INCH OF LIQUID WATER EQUIVALENT FROM THE SNOW PACK BETWEEN SATURDAY AND SUNDAY MORNING. WATER EQUIVALENT IN THE SNOW PACK ALONG THE I-80 CORRIDOR AND IN THE APPALACHIAN MOUNTAINS IS STILL ON THE ORDER OF 1 TO 3 INCHES. THE FIRST RAINFALL TO AUGMENT THIS RUNOFF WILL ARRIVE MONDAY NIGHT INTO TUESDAY...WITH APPROXIMATELY A QUARTER INCH OF RAIN EXPECTED. HPC INDICATES THAT AN ADDITIONAL QUARTER TO HALF INCH OF RAIN COULD FALL WEDNESDAY NIGHT THROUGH FRIDAY. SO EXPECT SLOW RISES AND POSSIBLE ICE MOVEMENTS ON SMALL STREAMS AND TRIBUTARY RIVERS THROUGH TUESDAY. SHARPER RISES AND ICE MOVEMENTS WILL BE MORE PROBABLE ON ALL AREA RIVERS STARTING WEDNESDAY DEPENDING ON THE EXTENT OF THE RUNOFF FROM SNOW MELT AND RAINFALL. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PITTSBURGH PA 452 AM EST SUN FEB 8 2009 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029>032-WVZ001>004-012-021>023-041-091000- GARRETT-TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON- JEFFERSON OH-MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-MERCER-VENANGO- FOREST-LAWRENCE-BUTLER-CLARION-JEFFERSON PA-BEAVER-ALLEGHENY- ARMSTRONG-INDIANA-WASHINGTON-WESTMORELAND-GREENE-FAYETTE-HANCOCK- BROOKE-OHIO-MARSHALL-WETZEL-MARION-MONONGALIA-PRESTON-TUCKER- 452 AM EST SUN FEB 8 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MARYLAND...EAST CENTRAL OHIO...NORTHWEST PENNSYLVANIA...SOUTHWEST PENNSYLVANIA...WEST CENTRAL PENNSYLVANIA...NORTHERN WEST VIRGINIA AND NORTHERN PANHANDLE OF WEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. HOWEVER HYDROLOGICALLY...EXPECT EXPECT SLOW RISES AND POSSIBLE ICE MOVEMENTS ON SMALL STREAMS AND TRIBUTARY RIVERS TODAY INTO TUESDAY. SHARPER RISES AND ICE MOVEMENTS WILL BE MORE PROBABLE ON ALL AREA RIVERS STARTING WEDNESDAY DEPENDING ON THE EXTENT OF THE RUNOFF FROM SNOW MELT AND RAINFALL THEN. SO RIVER LEVELS WILL NEED TO BE MONITORED ACCORDINGLY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
The national radar mosaic for the moment the first event began.
6 flood. Local standard time, as filed.
An ice jam on Neshannock Creek caused flooding and evacuatins along Algoma lane. 5 to 11 houses were affected. 3 persons evacuated.
An ice jam caused flooding on Slippery Rock Creek near the SR 19 bridge. A cottage was flooded and water was in the yards of a few homes.
An ice jam caused Red Bank Creek to flood along Rt 28 between Summereville and Baxter. The ice jam broke in about 3 hours with water quickly receding.
An ice jam on Oil Creek at the Allegheny River confluence was causing road flooding in Oil City. The ice jam broke in a few hours.
A combination of snow melt and heavy rainfall caused flooding of State Road 4019 between Salem Rd and Beatty School Rd.
A trained spotter reported flooding along Rt 666 in Endeaver from East Hickory Creek. Rt 666 was closed due to high water.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2009Every state in 2009This day in weather historyWarnings in Pennsylvania, February 2009
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: 154048, 154049, 154050, 154051, 154052, 154053.