An upper level trough dipped deep down into the Ohio Valley and resulted in showers and thunderstorms moving in from the southeast.
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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 upper level trough dipped deep down into the Ohio Valley and resulted in showers and thunderstorms moving in from the southeast.
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 23, 2:30 PM EST, 2 hours earlier.
Area Forecast Discussion National Weather Service Pittsburgh PA 330 PM EDT Mon Jul 23 2018 .SYNOPSIS... A broken record forecast continues through Wednesday with shower and thunderstorm chances continuing under a pesky upper low. Dry weather returns Thursday. Temperatures will be near normal all week. && .NEAR TERM /THROUGH TUESDAY/... Convective coverage is increasing with the marginal instability in place under mostly cloudy skies. Deepest moisture resides just east of the forecast area, so PoPs will remain highest along our common border with the neighboring offices and in the terrain. Did, however, up the PoPs in east central OH as much of the hi res guidance suggests a bit more coverage there as a result of shortwave, indicated on satellite. Showers/storms should wane this tonight with the loss of heating and shortwave support. Just as has been the case over the last several nights, lingering moisture and clouds should keep temperatures near or just a trough warmer than seasonal averages. && .SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY/... The low is progged open into an upper trough Tuesday as it remains across the Great Lakes and Upper OH Valley regions. An increase in scattered showers and thunderstorms is expected by afternoon with daytime heating and the approach of the trough. Again, the highest PoPs and heaviest rain will remain situated in the region of convergence over central PA, but likely PoPs were carried, as the trough axis may lend to a bit more coverage than has been the case since the weekend. Trough and its associated sfc cold front are expected to cross the region Wednesday, with additional showers and thunderstorms likely. Precip chances should diminish Wednesday night as the front exits eastward. Surface ridge should keep most of Thursday dry, though a reinforcing cold front will begin to sag south of the Great Lakes late. Temperatures should average near or just above seasonal levels. && .LONG TERM /THURSDAY NIGHT THROUGH SUNDAY/... Upper low south of Hudson Bay will pivot a cold front across the region on Friday, with the broad upper trough remaining an influence through the weekend. This will maintain at least low precipitation chances through the weekend. Seasonal temperatures Thursday are expected to fall to a few degrees below average for late week through the weekend. && .AVIATION /19Z MONDAY THROUGH SATURDAY/... High confidence forecast in cigs and wind, while medium confidence exists in cigs overnight at FKL, DUJ, and ZZV. VFR cigs will yield to MVFR weather for a short period after 20Z through 3Z. Afterward, look for stratocu to wane and give way to cirrus overnight. Southeast winds will keep MVFR and IFR clouds at FKL and DUJ much like this morning from 8Z-13Z. Shower activity will be scattered so included it in several terminals, but not all. Opted not to include thunder given lack of instability. Highest confidence of an airport seeing a shower would be ZZV around 0Z. More of the same Tuesday with broken mid and high clouds then scattered to broken cu developing during the late morning hours. Confidence not high to warrant VCSH mention in terminals at this juncture. IFR clouds at FKL and DUJ will lift to MVFR between 14-15Z. Winds will from the southeast less than 10 kts through the period. Any wind gusts to 20kts will be at FKL, DUJ, or LBE. OUTLOOK... Brief sub VFR weather is possible through Wednesday with an upper level low nearby. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. &&
Hazardous Weather Outlook National Weather Service Pittsburgh PA 321 AM EDT Mon Jul 23 2018 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029-031-073>076-WVZ001>004-012-021-509>514-240730- Garrett-Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson- Muskingum-Guernsey-Belmont-Noble-Monroe-Mercer-Venango-Forest- Lawrence-Butler-Clarion-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- 321 AM EDT Mon Jul 23 2018 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. No hazardous weather is expected at this time. .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.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
238 PM EDT MON JUL 23 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0222 PM TSTM WND DMG 2 WNW BROCK 39.75N 80.20W
07/15/2018 GREENE PA PUBLIC
NUMEROUS TREES DISCOVERED SNAPPED OR UPROOTED ALONG
SHEPPARDS RUN RD FROM STORM ON JUL 15. ADDITIONAL TREES
WERE REPORTED DOWN ALONG RT 218.
&&
EVENT NUMBER PBZ1803293
KRAMARSpecial Weather Statement
National Weather Service Pittsburgh PA
518 PM EDT MON JUL 23 2018
OHZ041-PAZ020-WVZ001-232145-
Columbiana-Beaver-Hancock-
518 PM EDT MON JUL 23 2018
...A STRONG THUNDERSTORM CAPABLE OF PRODUCING SMALL HAIL AND GUSTY
WIND WILL AFFECT SOUTHEASTERN COLUMBIANA...SOUTHWESTERN BEAVER AND
HANCOCK COUNTIES...
At 518 PM EDT, a strong thunderstorm was located near New Cumberland,
or 7 miles northeast of Weirton, moving north at 10 mph.
Wind gusts up to 45 mph and small hail are possible with this storm.
Locations impacted include...
East Liverpool... Wellsville...
Toronto... Calcutta...
Ohioville... Midland...
Chester... Industry...
New Cumberland... Shippingport...
Newell... New Manchester...
LAT...LON 4069 8035 4048 8037 4048 8052 4047 8052
4047 8059 4049 8061 4051 8062 4054 8063
4058 8067 4066 8071
TIME...MOT...LOC 2118Z 173DEG 9KT 4050 8051The Pittsburgh radar (KPBZ), 125 km away, was scanning. The volume nearest the first event began at 21:28 UTC.
1 thunderstorm wind. Local standard time, as filed.
A trained spotter reported 20 trees down and structural damage to a radio antenna. There was roof damage to 1 structure and numerous trees down along Route 313.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2018Every state in 2018This day in weather historyWarnings in Ohio, July 2018
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: 774473.