Line of showers and thunderstorms crossed the Upper Ohio Valley on the 12th. Heavy rain produced flooding, especially along interstate-80 where the line of storms trained over the same area before a shortwave helped to eject the line southward.
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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.
Line of showers and thunderstorms crossed the Upper Ohio Valley on the 12th. Heavy rain produced flooding, especially along interstate-80 where the line of storms trained over the same area before a shortwave helped to eject the line southward.
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 Jan 12, 5:40 AM EST, 2 hours 50 minutes earlier.
Area Forecast Discussion National Weather Service Pittsburgh PA 540 AM EST Thu Jan 12 2017 .SYNOPSIS... More rain is expected today ahead of a cold front. More seasonable temperatures return by Friday. A wintry mix is possible over the weekend. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... A predawn update was issued to adjust POPs and QPF, mainly over areas north of Pittsburgh where training showers will increase rain amounts. Used numbers close to RFC guidance. Previous... The next cold front will keep in the risk for showers throughout the day, with the best chance coming during the afternoon, as the boundary approaches. The front will barrel through late this afternoon, so the PoP forecast has been created in conjunction with FROPA. Its not completely out of the question that a rumble of thunder is possible along the boundary. The main concern will be strong winds ahead of and along the front. A strong low level jet will remain over the area all day. There is the potential for these stronger winds to mix down to the surface, however, the greatest threat for advisory level winds will remain over the higher elevations, as the region remains in the warm sector. Have increased wind gusts for the entire area today. Temperatures have also been increased. && .SHORT TERM /6 PM THIS EVENING THROUGH SATURDAY/... The front will rush through this evening, bringing a quick end to the rain, and also ushering in a much colder air mass. High pressure will build over the eastern Great Lakes behind the front, keeping the area dry on Friday. This feature will play a crucial role in determining the weather type for the weekend. As of now, confidence is increasing for the existence of a wintry mix to occur on Saturday over at least the southern half of the forecast area. There is, however, large uncertainty in the northward extent of the precipitation and warm air on Saturday, thus a blend of model data was used. Sufficient cold air damming should result in freezing rain to occur, with the largest ice accumulation amounts progged over Garrett and Tucker Counties. && .LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/... Large operational model differences on what happens to the front Saturday night and Sunday, but focusing more on Ensemble data, the boundary should be shoved well to the south on Sunday. High pressure will build in behind the front with the next system progged for later on Tuesday. && .AVIATION /12Z THURSDAY THROUGH MONDAY/... MVFR to local IFR and periodic showers are expected to continue today as a cold front slides toward the area. The front is progged for a late afternoon/early evening passage with a wind shift to the W. LLWS potential will continue until increased mixing results in S-SW surface gusts near 30 kt after daybreak. .OUTLOOK... Periodic restrictions are expected through early next week as a series of disturbances cross the region. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. && 15
HAZARDOUS WEATHER OUTLOOK...CORRECTED NATIONAL WEATHER SERVICE PITTSBURGH PA 503 AM EST THU JAN 12 2017 OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023-029- 031-073-075-WVZ001>004-012-021-509-122215- TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON-JEFFERSON-MUSKINGUM- GUERNSEY-BELMONT-NOBLE-MONROE-MERCER-VENANGO-FOREST-LAWRENCE-BUTLER- CLARION-BEAVER-ALLEGHENY-ARMSTRONG-INDIANA-WASHINGTON-GREENE- WESTMORELAND-FAYETTE-HANCOCK-BROOKE-OHIO-MARSHALL-WETZEL-MARION- MONONGALIA- 503 AM EST THU JAN 12 2017 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL OHIO...NORTHWEST PENNSYLVANIA...SOUTHWEST PENNSYLVANIA...WEST CENTRAL PENNSYLVANIA...WESTERN PENNSYLVANIA...NORTHERN WEST VIRGINIA AND NORTHERN PANHANDLE OF WEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT. HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. A WINTRY MIX OF PRECIPITATION ON SATURDAY COULD RESULT IN HAZARDOUS TRAVEL CONDITIONS. HEADLINES MAY BE NEEDED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. MDZ001-PAZ074-076-WVZ510>514-122215- GARRETT-WESTMORELAND RIDGES-FAYETTE RIDGES- RIDGES OF EASTERN MONONGALIA AND NORTHWESTERN PRESTON-PRESTON- EASTERN PRESTON-WESTERN TUCKER-EASTERN TUCKER- 503 AM EST THU JAN 12 2017 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MARYLAND...SOUTHWEST PENNSYLVANIA AND NORTHERN WEST VIRGINIA. .DAY ONE...TODAY AND TONIGHT. STRONG WIND GUSTS ARE POSSIBLE TODAY...PARTICULARLY OVER THE RIDGE TOPS. WINDS COULD APPROACH ADVISORY LEVELS, NECESSITATING AN ISSUANCE OF A WIND ADVISORY. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. A WINTRY MIX OF PRECIPITATION ON SATURDAY COULD RESULT IN HAZARDOUS TRAVEL CONDITIONS. HEADLINES MAY BE NEEDED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
The Pittsburgh radar (KPBZ), 90 km away, was scanning. The volume nearest the first event began at 13:28 UTC.
10 flood, 10 thunderstorm wind, 5 flash flood. Local standard time, as filed.
Emergency manager reported a house flooded in Stoneboro.
State department of highways reported flooding on State Route 18 near Greenville.
Emergency manager reported several roads flooded.
Department of highways reported flooding on State Route 1008, west of US-19.
The public reported that several roads were flooded in the town of Jamestown.
Emergency manager reported that West State Street was flooded near Edinburg.
State official reported several roads closed due to flooding. In addition, a landslide occurred on Rural Ave at Neshannock Ave.
State official reported that Shenango Park Road was flooded.
Emergency manager reported trees down on Shadow Drive.
Emergency manager reported a tree down in Independence.
Department of highways reported a tree down.
Department of highways reported a tree down near Golinza.
Department of highways reported a large tree down on State Route 308.
Department of highways reported a tree down on Old Pittsburgh Road.
Department of highways reported a tree down.
Department of highways reported tree down.
State official reported that Coverts Road was starting to wash out.
Department of highways reported tree down.
State official reported one tree down on power lines.
State Route 28 at Jefferson Street flooded.
State official reported that Pickering Street at Jefferson Street was flooded and route 322 at Knox Dale road is flooded.
State official reported that route 28 was flooded in Warsaw Township.
Local 911 call center reported several roads closed and flooded basements in Hawthorne. In addition, Dewey Road in Redbank Township was completely washed away.
State official reported that route 526 at Sandy Hill Road was flooded and that there was debris on the road.
State official reported that Huey Run Road at Cherry Run Road was flooded in Toby Township.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2017Every state in 2017This day in weather historyWarnings in Pennsylvania, January 2017
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: 678411, 678413, 678412, 678414, 678416, 678417, 678418, 678415, 677201, 678269, 678233, 678244, 678234, 678235, 678261, 678266, 678419, 678267, 678236, 678420, 678421, 678422, 678425, 678423, 678424.