The leading edge of a trough initiated convection across the region during the early afternoon of August 29th. 0 inches under prolonged southwest flow).
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.
The leading edge of a trough initiated convection across the region during the early afternoon of August 29th. With little deep-layer wind shear available for quick storm motion, flash flooding occurred under warm, moist conditions (PWATs ranging 1.8 to 2.0 inches under prolonged southwest flow). A few storms were considered severe, knocking down trees, as updrafts escalated into cool, dry conditions aloft and created strong downdrafts.
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 Aug 29, 11:23 AM EST, 1 hour 17 minutes earlier.
Area Forecast Discussion National Weather Service Pittsburgh PA 1223 PM EDT Mon Aug 29 2022 .SYNOPSIS... Dry and warm weather will be interrupted by rain in advance of a Tuesday cold front. Dry and cooler weather will then persist into the holiday weekend. && .NEAR TERM /THROUGH TONIGHT/... Shower and thunderstorm chances are on the increase and the aftn update featured POPs adjustments for more rapid development out of Ohio this aftn. Otherwise, two distinct areas of convection are model-indicated for near term convection. Organized severe weather is not expected given the lack of deep layer shear and relatively warm mid levels. Nevertheless, the dry layer aloft may contribute to an isolated gust potential for any updraft that can survive and throw some super-cool water into the mid levels. Humidity and warm, to neutral advection will support aftn highs and overnight lows about 10 degrees above the avgs (81/60 at Pit) && .SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/... Better coverage of showers and thunderstorms is expected later tngt and Tuesday as pre-frontal, then frontal bands of rain crosses the area. The cold front is projected to complete passage by Tuesday late afternoon/evening. Given an increase in mid level wind/steering flow to approx 30 kt, convective element speed and upper trough progression should alleviate any widepread flash flood threat. Expect a half to one inch of basin avg rainfall. && .LONG TERM /THURSDAY THROUGH MONDAY/... Dry and slightly cooler than average weather marks the beginning of September into Labor Day weekend as broad sfc high pressure builds over the eastern US. Temperatures will gradually warm late week with a return to above-average temps this weekend. && .AVIATION /16Z MONDAY THROUGH FRIDAY/... An incoming shortwave should support increased shra and tsra chances through early eve. Direct impact probabilities are highest near ZZV, FKL, and HLG, where the approach of forcing will coincide with the highest daytime instability. Otherwise; tsra chances should likely decrease in coverage with fading instability tonight, though persistent shortwave ascent on the van of an upper trough should maintain shra and MVFR cigs through early Tues. .Outlook... Continued restrictions via aftn tsra are likely Tues with a passing cold front. VFR under high pressure will likely dominate the remainder of the week. && .PBZ WATCHES/WARNINGS/ADVISORIES... PA...None. OH...None. WV...None. &&
Hazardous Weather Outlook National Weather Service Pittsburgh PA 415 AM EDT Mon Aug 29 2022 OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023-029- 031-073>076-WVZ001>004-012-021-509>514-300815- 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-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- 415 AM EDT Mon Aug 29 2022 This Hazardous Weather Outlook is for east central Ohio, western Pennsylvania, and northern West Virginia. .DAY ONE...Today and tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
Special Weather Statement
National Weather Service Pittsburgh PA
1257 PM EDT Mon Aug 29 2022
OHZ040-041-050-PAZ013-020-WVZ001-291745-
Jefferson OH-Columbiana OH-Carroll OH-Lawrence PA-Beaver PA-
Hancock WV-
1257 PM EDT Mon Aug 29 2022
...AN AREA OF STRONG THUNDERSTORMS WILL IMPACT NORTHERN JEFFERSON...
COLUMBIANA...EASTERN CARROLL...NORTHWESTERN BEAVER...LAWRENCE AND
HANCOCK COUNTIES THROUGH 145 PM EDT...
At 1256 PM EDT, an area of strong thunderstorms 8 miles southwest of
Lisbon, or 13 miles northeast of Carrollton, was moving east at 35
mph.
HAZARD...Wind gusts of 50 to 55 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
New Castle, Weirton, Salem, East Liverpool, Columbiana, East
Palestine, Wellsville, Carrollton, Ellwood City, Toronto, Calcutta,
and Ohioville.
This includes the following highways...
Pennsylvania Turnpike between mile markers 1 and 8.
Interstate 79 in Pennsylvania between mile markers 107 and 110.
Interstate 376 in Pennsylvania between mile markers 5 and 14.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 4112 8024 4111 8015 4107 8010 4100 8016
4085 8016 4085 8046 4067 8044 4042 8055
4047 8119 4090 8092 4091 8090 4093 8089
4093 8082 4090 8082 4090 8052 4112 8052
4113 8026
TIME...MOT...LOC 1656Z 261DEG 31KT 4070 8089
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...55 MPHSpecial Weather Statement
National Weather Service Pittsburgh PA
102 PM EDT Mon Aug 29 2022
OHZ039-048-057-058-291745-
Guernsey OH-Tuscarawas OH-Coshocton OH-Muskingum OH-
102 PM EDT Mon Aug 29 2022
...AN AREA OF STRONG THUNDERSTORMS WILL IMPACT NORTHWESTERN
GUERNSEY... COSHOCTON...MUSKINGUM AND SOUTHWESTERN TUSCARAWAS
COUNTIES THROUGH 145 PM EDT...
At 101 PM EDT, an area of strong thunderstorms near Dresden, or 12
miles southwest of Coshocton, was moving northeast at 25 mph.
HAZARD...Wind gusts of 50 to 55 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Zanesville, New Philadelphia, Dover, Coshocton, Cambridge,
Newcomerstown, New Concord, West Lafayette, Sugarcreek, South
Zanesville, North Zanesville, and Dresden.
This includes the following highways...
Interstate 70 in Ohio between mile markers 145 and 178.
Interstate 77 in Ohio between mile markers 46 and 83.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4019 8219 4045 8187 4044 8167 4051 8166
4053 8147 4006 8147 3988 8182 3987 8217
3991 8216 3991 8220
TIME...MOT...LOC 1701Z 231DEG 21KT 4017 8205
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...55 MPHSpecial Weather Statement
National Weather Service Pittsburgh PA
108 PM EDT Mon Aug 29 2022
PAZ007-013-291800-
Lawrence PA-Mercer PA-
108 PM EDT Mon Aug 29 2022
...A STRONG THUNDERSTORM WILL IMPACT MERCER AND NORTHERN LAWRENCE
COUNTIES THROUGH 200 PM EDT...
At 108 PM EDT, Doppler radar was tracking an area of strong
thunderstorm near Farrell, or near Sharon, moving east at 40 mph.
HAZARD...Wind gusts of 50 to 55 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Hermitage, Sharon, Grove City, Sharpsville, Greenville, Farrell, New
Wilmington, Mercer, Pulaski, Stoneboro, New Bedford, and West
Middlesex.
This includes the following highways...
Interstate 79 in Pennsylvania between mile markers 108 and 137.
Interstate 80 in Pennsylvania between mile markers 0 and 27.
Interstate 376 in Pennsylvania between mile markers 4 and 10.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4148 8013 4149 8012 4149 8000 4117 8000
4106 8010 4105 8052 4149 8052
TIME...MOT...LOC 1708Z 254DEG 35KT 4116 8050
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPHThe Pittsburgh radar (KPBZ), 41 km away, was scanning. The volume nearest the first event began at 17:39 UTC.
10 thunderstorm wind, 2 flash flood. Local standard time, as filed.
Social media post of trees and wires down on Anderson Road.
Social media post of trees down on roadway.
Heavy rain caused multiple streets in Monaca proper to flood.
Harvey Run Road near 8th street flooded.
A 911 Call Center reported tree down on wires.
A 911 Call Center reported wires down on 4th Ave.
A 911 Call Center reported tree down along Church Street.
A 911 Call Center reported tree down on Vandergrift Lane.
A 911 Call Center reported tree down on Edmon Road.
A 911 Call Center reported tree down on State Route 1018 in Boggs Township.
A 911 Call Center reported trees down around Smicksburg.
A 911 Call Center reported a few trees down in the city of Punxsutawney.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2022Every state in 2022This day in weather historyWarnings in Pennsylvania, August 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: 1046392, 1046391, 1055373, 1055374, 1046393, 1046395, 1046394, 1046396, 1046397, 1046398, 1046399, 1046400.