An area of showers and isolated thunderstorms across eastern Ohio produced rainfall of over 3 inches across parts of Monroe county in 24 hours. Mud slides and flooded roads were reported.
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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 PBZ wrote it up.
An area of showers and isolated thunderstorms across eastern Ohio produced rainfall of over 3 inches across parts of Monroe county in 24 hours. Mud slides and flooded roads were reported.
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 Sep 7, 1:30 AM EST, 1 hour earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 230 AM EDT MON SEP 7 2009 .SYNOPSIS... A LARGE UPPER LEVEL SYSTEM WILL PROVIDE UNSETTLED WEATHER THROUGH MOST OF THE WEEK. && .NEAR TERM /THROUGH TODAY/... MIDWEST TROUGH WILL CUTOFF THIS AFTERNOON AND STALL. DEEP LAYERED MOISTURE WILL STREAM NORTHWARD ON THE EASTERN SIDE OF TROUGH. A WAVE WILL MOVE OUT THE LOWER OHIO VALLEY THIS MORNING AND ACROSS THE REGION THIS AFTERNOON. AREA OF SHOWERS WITH A COUPLE OF STRIKES OF LIGHTNING WILL MOVE NORTHWARD OVER MOST OF THE AREA TODAY. 00Z NAM INITIALIZED THE AREA OF RAIN SLIGHTLY TOO FAR TO THE WEST...WHILE THE 00Z GFS HAS CAUGHT THE REFLECTION PRETTY WELL. WILL LEAN TOWARD THE GFS TODAY. PLENTY OF CLOUDS AND SHOWERS WILL KEEP TEMPS BELOW NORMAL. && .SHORT TERM /TONIGHT THROUGH WEDNESDAY/... WAVE EXITS TO THE NORTH THIS EVENING AND INVERTED SFC TROUGH SHIFTS WEST TOWARD CUTOFF 50H LOW. THIS WILL SHIFT THE AXIS OF SHOWERS FURTHER WEST...PROVIDING A BREAK IN THE ACTIVITY TONIGHT. UPPER LEVEL LOW WILL STALL OVER W OH/IN TONIGHT AND REMAIN THERE THROUGH TUESDAY. AT THE SAME TIME SFC LOW WILL MOVE UP THE EAST COAST. THE FLOW AROUND THE SFC FEATURE WILL CONTINUE TO PUSH MOISTURE ACROSS THE AREA TOWARD THE UPPER LEVEL LOW. THIS WILL KEEP IN THE RISK FOR SHOWERS/POSSIBLE STORM TUESDAY...WITH THE HIGHEST POPS ACROSS THE WESTERN HALF OF THE AREA. PLENTY OF CLOUDS AND COOL TEMPS AGAIN TUESDAY. UPPER LOW WILL SHIFT SOUTHEASTWARD TUESDAY NIGHT AND MOVE OVER WV WED. THIS WILL PROVIDE ANOTHER DAY WITH THE RISK FOR ACTIVITY. && .LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/... FIRST PORTION OF THE EXTENDED REMAINS UNSETTLED AS UPPER LOW OPENS UP BUT TROUGH REMAINS OVER THE EASTERN US. TROUGH LIFTS BY THE END OF THE WEEK AS ANOTHER LARGE SYSTEM DIGS INTO THE UPPER MIDWEST. THERE CONTINUE TO BE DIFFERENCES IN MODEL SOLUTIONS SO CONFIDENCE IS LOW IN THE DETAILS OF LONG TERM FORECAST. && .AVIATION /06Z MONDAY THROUGH FRIDAY/... JUDGING FROM BLEND OF RECENT RADAR AND SURFACE DATA COUPLED WITH SREF MODEL OUTPUT...EXPECT MVFR RAIN SHOWERS TO MOVE NORTHWARD ACROSS THE UPPER OHIO VALLEY INTO TONIGHT. AT TIMES THE RAIN MOISTENED SURFACE LAYER CAN BECOME SUFFICIENTLY SATURATED TO PRODUCE IFR CONDITIONS...PARTICULARLY EARLY THIS MORNING. SURFACE WINDS WILL BE MAINLY FROM THE SOUTHEAST 6-10 KTS TODAY...AND BECOME MORE EASTERLY TONIGHT. WITH SREF AND GEFS MODEL OUTPUTS SHOWING CLOSED UPPER LOW REMAINING OVER THE UPPER OHIO VALLEY INTO FRIDAY...AND BEING FED BY MOIST SOUTHEASTERLY FLOW AT LOW LEVELS...EXPECT SEVERAL PERIODS OF MVFR TO IFR SHOWERS TUESDAY INTO FRIDAY. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PITTSBURGH PA 339 AM EDT SUN SEP 6 2009 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029>032-WVZ001>004-012-021>023-041-070745- 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- 339 AM EDT SUN SEP 6 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. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
County officials reported flooding and a mud slide covering portions of county RD 11 south of Antioch.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2009Every state in 2009This day in weather historyWarnings in Ohio, September 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: 191781.