A cluster of slow-moving thunderstorms drifted east across the Upper Ohio Valley. A segment of training storms were focused across Jefferson County, Ohio in the area of Winterville and Steubenville, where over 2 inches fell in an hour and caused flash flooding issues in those areas.
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The episode as NWS PBZ wrote it up.
A cluster of slow-moving thunderstorms drifted east across the Upper Ohio Valley. A segment of training storms were focused across Jefferson County, Ohio in the area of Winterville and Steubenville, where over 2 inches fell in an hour and caused flash flooding issues in those areas.
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 Jul 17, 2:57 AM EST, 18 minutes earlier.
Area Forecast Discussion National Weather Service Pittsburgh PA 357 AM EDT Sun Jul 17 2022 .SYNOPSIS... A series of low pressure systems will bring increased shower and thunderstorm chances through Monday night. Hot and humid conditions return by the middle of the week. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... A warm front will traverse the entire forecast area this morning, placing the region in a high humidity airmass. Once the boundary parks to the north, the flow aloft will become zonal. Then a series of shortwaves will make their way across the Upper Ohio Valley. Timing, location, and intensity of these waves remains uncertain, as models are not in very good agreement. However, there will be a chance for a shower or storm at any time during the day, with the highest probability late this afternoon and evening. The threat for severe weather (in the form of damaging wind) this aftn/eve will be predicated on enough warming to destabilize the region, given shear values will struggle to reach 30kts. This will be difficult as clouds will be plentiful and showers and storms will be around for most of the day. In these scenarios, localized flash flooding is a threat due to the high moisture content in the atmosphere (surface dewpoints in the upper 60s to lower 70s) and the risk for repeated heavy downpours over the same locations. && .SHORT TERM /6 PM THIS EVENING THROUGH TUESDAY/... Another, more pronounced, trough will slowly slide across the region Monday while a series of shortwaves round its base. The increased jet ascent, continued moist advection ahead of the trough axis, and an approaching cold front will promote another round of showers and storms. Precipitation chances will diminish Monday night with frontal passage and the transition of the trough east. Tuesday looks dry with increased sunshine as high pressure moves south of the area. && .LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/... The region likely will dry out and see temperature rise to about 5 degrees above average under weak NW flow and surface high pressure to the south. The next upper trough and sfc cold front should impact the region mid to late week as its drops out of Alberta, CA toward the upper Great Lakes. Timing of trough/front through the region remains uncertain, but the development of showers and thunderstorms is likely prior to its passage at some point during this period. Synoptic details remain too fuzzy for any discussion of severe/flood threat for the system at this time. && .AVIATION /08Z SUNDAY THROUGH THURSDAY/... Scattered showers and thunderstorms will continue to move across portions of the Upper Ohio Valley tonight. All PBZ terminals with the exception of FKL and DUJ will likely see rain at some point, though likely brief. Lightning is occurring across eastern Ohio with these cells and may likely affect HLG and perhaps LBE, MGW, and AGC overnight.. though considering this a rather low confidence forecast. Ceilings are widely VFR with these cells and vis drops to MVFR/IFR only in the center of the strongest cells. Have included TEMPO groups in most likely time showers/storms will pass. Convective activity will wane towards dawn and be at a minimum through early afternoon. Then scattered to widespread thunderstorms are expected with an approaching low from mid- afternoon through at least dusk. IFR restrictions likely with thunderstorm passage, but then MVFR/IFR likely into the night as plentiful low-level moisture remains without much mixing. Wind will remain light/southerly through the majority of the time, though afternoon thunderstorms will hold strong wind gust potential. .Outlook... Degraded conditions are likely from Sunday evening thunderstorms through much of Monday. Improvement is likely into midweek. && .PBZ WATCHES/WARNINGS/ADVISORIES... PA...None. OH...None. WV...None. && SYNOPSIS... NEAR TERM... SHORT TERM... LONG TERM... AVIATION...98
Hazardous Weather Outlook National Weather Service Pittsburgh PA 338 AM EDT Sun Jul 17 2022 PAZ007>009-015-016-180745- Mercer-Venango-Forest-Clarion-Jefferson PA- 338 AM EDT Sun Jul 17 2022 This Hazardous Weather Outlook is for northwest Pennsylvania and western Pennsylvania. .DAY ONE...Today and tonight. Storms late this afternoon and evening, could produce heavy downpours which may lead to localized flooding. .DAYS TWO THROUGH SEVEN...Monday through Saturday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. OHZ039>041-048>050-057>059-068-069-PAZ013-014-020>023-029-031- 073>076-WVZ001>004-012-021-509>514-180745- Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson OH- Muskingum-Guernsey-Belmont-Noble-Monroe-Lawrence-Butler-Beaver- Allegheny-Armstrong-Indiana-Washington-Greene-Westmoreland- Higher Elevations of Westmoreland-Fayette- Higher Elevations of Fayette-Hancock-Brooke-Ohio-Marshall-Wetzel- Marion-Monongalia- Ridges of Eastern Monongalia and Northwestern Preston-Preston- Eastern Preston-Western Tucker-Eastern Tucker- 338 AM EDT Sun Jul 17 2022 This Hazardous Weather Outlook is for east central Ohio, southwest Pennsylvania, western Pennsylvania, and northern West Virginia. .DAY ONE...Today and tonight. Isolated severe storms are possible this afternoon and evening. The main threat is damaging wind gusts. Storms can also produce heavy downpours which may lead to localized flooding. .DAYS TWO THROUGH SEVEN...Monday through Saturday. 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 Pittsburgh PA
410 AM EDT Sun Jul 17 2022
PAZ029-170845-
Washington PA-
410 AM EDT Sun Jul 17 2022
...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN WASHINGTON COUNTY
THROUGH 445 AM EDT...
At 410 AM EDT, Doppler radar was tracking a strong thunderstorm near
Weirton, moving east at 5 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Burgettstown, Atlasburg, Langeloth, Midway, and Slovan.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 4032 8030 4029 8051 4036 8052 4045 8051
4045 8034 4037 8025
TIME...MOT...LOC 0810Z 272DEG 5KT 4040 8046
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
BrownThe Pittsburgh radar (KPBZ), 42 km away, was scanning. The volume nearest the first event began at 08:16 UTC.
1 flash flood. Local standard time, as filed.
Two to three inches of rainfall over just over an hour caused flash flooding across much of Steubenville. Several houses were reported to be inundated with water as well as several road closures due to high water.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2022Every state in 2022This day in weather historyWarnings in Ohio, July 2022
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: 1029454.