With very moist profiles and little wind shear, the primary concern for the day was heavy rainfall and localized flash flooding potential with thunderstorms. A flash flood watch was issued for a portion of our region, mainly the higher elevations.
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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.
With very moist profiles and little wind shear, the primary concern for the day was heavy rainfall and localized flash flooding potential with thunderstorms. A flash flood watch was issued for a portion of our region, mainly the higher elevations. Deep warm cloud depths and slow moving storms promoted high rainfall rates. The 00Z sounding noted very high precipitable water values of 1.67 inches, which exceeded the 90th percentile for the date.
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 4, 11:06 AM EST, 53 minutes earlier.
Area Forecast Discussion National Weather Service Pittsburgh PA 1206 PM EDT Thu Jul 4 2019 .SYNOPSIS... Warm and humid weather is expected through the weekend, with daily shower and thunderstorm chances. && .NEAR TERM /THROUGH TONIGHT/... Generally made minor updates to grids, upping PoPs along the ridges given radar trends. With heavy rain ingredients in place and storms becoming tied to the terrain in areas with relatively lower flash flood guidance, elected to post a Flash Flood Watch for much of the southeastern terrain areas. Will not rule out further expansion depending on how convective pattern develops. Previous discussion... Typical summertime weather will continue today under high pressure as diurnally-driven, scattered showers/storms return during the afternoon and evening hours. Scattered evening thunderstorms should quickly diminish after dark with loss of daytime heating. With very moist profiles and little wind shear, the overall threat for severe weather will be low this afternoon. The primary concern will be heavy rainfall and localized flash flooding potential with thunderstorms. High temperatures will be several degrees above seasonal average. && .SHORT TERM /FRIDAY THROUGH FRIDAY NIGHT/... The pattern continues on Friday with warm/humid air remaining in place over the area. Convection is expected to linger a little longer into the overnight with support from an approaching shortwave. The potential for localized flash flooding will once again be a threat, with other forms of severe weather less likely. Temperatures will remain near to just above climatology. && .LONG TERM /SATURDAY THROUGH WEDNESDAY/... The front that has been sitting to our north will shift southwards on Saturday with help from low pressure crossing Quebec. Have included likely PoPs on Saturday ahead of the front. Rain chances will linger through Sunday as the front passes. Dry weather finally returns for most of the region on Monday, though shower/thunderstorm chances will linger across the ridges. Tuesday will remain dry areawide under high pressure, but rain chances creep back into the forecast on Wednesday as the high shifts eastwards and moist, southerly return flow begins. Temperatures will be near to just above normal through the period. && .AVIATION /16Z THURSDAY THROUGH MONDAY/... Vis restrictions will improve by mid-morning as low level mixing increases. With minimal change in the pattern TAFs remain largely a persistence forecast with scattered shower/storm this afternoon/evening followed by patchy fog development. .Outlook... Periodic restrictions are likely through the weekend with abundant boundary layer moisture and daily convection chances. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...Flash Flood Watch until midnight EDT tonight for MDZ001. OH...None. PA...Flash Flood Watch until midnight EDT tonight for PAZ073>076. WV...Flash Flood Watch until midnight EDT tonight for WVZ510>514. &&
Hazardous Weather Outlook National Weather Service Pittsburgh PA 400 AM EDT Thu Jul 4 2019 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029-031-073>076-WVZ001>004-012-021-509>514-050800- 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-Greene-Westmoreland-Westmoreland Ridges- Fayette-Fayette Ridges-Hancock-Brooke-Ohio-Marshall-Wetzel-Marion- Monongalia-Ridges of Eastern Monongalia and Northwestern Preston- Preston-Eastern Preston-Western Tucker-Eastern Tucker- 400 AM EDT Thu Jul 4 2019 This Hazardous Weather Outlook is for western Maryland, 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. Localized flash flooding is possible in thunderstorms, mainly during the afternoon and evening hours. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Localized flash flooding is possible through Saturday with thunderstorms, mainly during the afternoon and evening hours. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures.
The Pittsburgh radar (KPBZ), 116 km away, was scanning. The volume nearest the first event began at 16:58 UTC.
2 flash flood. Local standard time, as filed.
A local fire department reported high water on Buffalo Run Rd.
A 911 Call Center reported a road closed nearby.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maryland in 2019Every state in 2019This day in weather historyWarnings in Maryland, July 2019
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: 843763, 843764.