Rainfall during the previous day, plus during the morning of July 2nd, kept the ground saturated. An early afternoon break in rainfall was followed by additional thunderstorm development in western and central Ohio by late afternoon.
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.
Rainfall during the previous day, plus during the morning of July 2nd, kept the ground saturated. An early afternoon break in rainfall was followed by additional thunderstorm development in western and central Ohio by late afternoon. These storms took advantage of an environment containing 1500 J/kg of surface-based CAPE, along with marginal sufficient deep shear of 30 knots to create severe thunderstorms with a number of wind damage reports in Ohio. Southwest Pennsylvania only saw isolated flash flooding in Allegheny County from this event.
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 2, 5:02 PM EST, 3 hours 26 minutes earlier.
Area Forecast Discussion National Weather Service Pittsburgh PA 602 PM EDT Sun Jul 2 2023 .SYNOPSIS... Passage of a trough to our west under a warm, moist air mass will continue to stir showers and thunderstorms through tonight. The main threat in the next 12 hours will be flash flooding with training storms. The severe threat, mainly for damaging winds, will remain south of I-70 through midnight. && .NEAR TERM /UNTIL 6 AM MONDAY MORNING/... The center of a weakening upper-lvl is currently situated near Chicago as of 6pm. For areas southeast of the pivoting low, convection has redeveloped over the last few hours within and along a dry slot in Indiana/central Ohio. With MUCAPE ranging between 1200J/kg to 1600J/kg this evening and effective shear near 30kts, eastern Ohio and areas south of I-70 will likely be the area of concern for damaging winds and small hail. PWATS are higher than yesterday, nearing 2.00 inches, based on GOES-16 temp/moisture profiles in eastern OH. Therefore, the potential for flash flooding continues today for slow moving storms along weak boundaries and areas that experienced "training" storms. Expect rainfall rates to exceed 1-2 inches per hour in some of these passing storms with abundant surface moisture and a deep warm cloud layer. Based off the latest GFS run, the depth of the freezing level to lift condensation level will exceed 13kft, which will produce efficient rainfall rates. The potential for flooding will continue after midnight but the severe threat will likely diminish with boundary-layer decoupling noted in some soundings. Dense fog is not likely, however there are elevated probabilities of reduced visibility near I-80 between 3am to 6am. && .SHORT TERM /6 AM MONDAY MORNING THROUGH TUESDAY NIGHT/... Showers and isolated thunderstorms will continue for the area on Monday with a crossing cold front, then gradually waning in coverage as the weak surface low and associated cold front track eastward. Coverage is likely to be highest during the afternoon hours with peak heating. Lingering showers will exit the area Monday night. Northwesterly flow behind the front will help cool temperatures a few degrees from previous days. Brief ridging on Tuesday will significantly lower shower/thunderstorm potential for Independence Day and into Wednesday. While we can't rule out a isolated shower/thunderstorm in the afternoon, kept PoPs generally around 25% or less during the afternoon for both days. Highs will warm into the mid 80s for most with dewpoints in the upper 60s. && .LONG TERM /WEDNESDAY THROUGH SUNDAY/... A much stronger trough will begin to move into the region by Thursday and Friday. Once again the ridge in the southeast just off the SE coast will hinder the approach of the front keeping renewed convection for Thursday and Friday afternoons as a stalled surface boundary seems likely. This will likely return to a diurnally driven environment by the that time period. By the weekend, the front shifts to the east shifting the bulk of the rainfall to the east as the main boundary pushes east. Behind this will be a low confidence forecast as ridging tries to take over, the lingering air mass will make for an unstable environment in the afternoons. So did leave low chance pops inherited by the NBM. && .AVIATION /21Z SUNDAY THROUGH FRIDAY/... General improvements are expected today with many ports clearing to VFR, with MVFR maintenance still in the cards for FKL and DUJ. Thunder mentions continue to be omitted this afternoon given morning clouds and surface stabilization. Storm chances could not be ruled out for FKL and DUJ late afternoon with a slight amount of instability over saturated low levels. During the nighttime hours, gusts should subside slightly with decoupling. Winds will back slightly to the south ahead of the next surface trough. As this pushes through, thunderstorms will progress into the region, with temporary restrictions possible. Storm changes will be most likely for ZZV, and decrease from west to east as they progress. DUJ/FKL are less likely to see storms with minimal daytime heating, so VCTS was noted for now. Recent rainfall and continued low level saturation will bring MVFR/IFR restrictions once again tonight, though precipitation seems unlikely by sunrise for most areas. Restrictions will lift beyond daybreak, though afternoon thunderstorms will be possible once again tomorrow. There is still low confidence in tomorrow's coverage. .OUTLOOK... After storms Monday and lingering restriction potential through Monday night, VFR is likely to return into the holiday. Restrictions may return briefly Tuesday night, but VFR is likely to prevail through late week otherwise. && .PBZ WATCHES/WARNINGS/ADVISORIES... PA...None. OH...None. WV...None. && SYNOPSIS...Hefferan NEAR TERM...Hefferan SHORT TERM...Rackley/Shallenberger LONG TERM...Rackley AVIATION...Milcarek
Hazardous Weather Outlook National Weather Service Pittsburgh PA 910 PM EDT Sun Jul 2 2023 PAZ007>009-013>016-022-077-078-040115- Mercer-Venango-Forest-Lawrence-Butler-Clarion-Jefferson PA-Armstrong- Indiana-Higher Elevations of Indiana- 910 PM EDT Sun Jul 2 2023 This Hazardous Weather Outlook is for western Pennsylvania. .DAY ONE...Tonight. Moderate to heavy rainfall within thunderstorms may lead to flash flooding impacts, especially for urban and low-lying areas tonight. .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-PAZ020-021-029-031-073>076- WVZ001>004-012-021-509>514-040115- Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson OH- Muskingum-Guernsey-Belmont-Noble-Monroe-Beaver-Allegheny-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- 910 PM EDT Sun Jul 2 2023 This Hazardous Weather Outlook is for east central Ohio, southwest Pennsylvania, western Pennsylvania, and northern West Virginia. .DAY ONE...Tonight. Moderate to heavy rainfall within thunderstorms may lead to flash flooding impacts, especially for urban and low-lying areas this evening and into tonight. There is a low probability of severe storms tonight. If storms do form, it will likely create wind gusts up to 40-45mph. .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.
Preliminary Local Storm Report
National Weather Service Pittsburgh PA
842 PM EDT Sun Jul 02 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0840 PM Flash Flood 1 SSE Sun Valley 40.44N 80.56W
07/02/2023 Hancock WV Trained Spotter
Creek out of its banks along North 12th street.
&&
Event Number PBZ2301897
SKHSpecial Weather Statement
National Weather Service Pittsburgh PA
850 PM EDT Sun Jul 2 2023
OHZ048-057-030115-
Coshocton OH-Muskingum OH-
850 PM EDT Sun Jul 2 2023
...STRONG THUNDERSTORMS WILL IMPACT WESTERN COSHOCTON AND WESTERN
MUSKINGUM COUNTIES THROUGH 915 PM EDT...
At 850 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Utica to Somerset. Movement was northeast
at 45 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...
Zanesville, South Zanesville, North Zanesville, Dresden, Frazeysburg,
Warsaw, Gratiot, Fultonham, Nellie, East Fultonham, Drake, New
Guilford, Walhonding, Blissfield, Cooperdale, and Dillon State Park.
This includes Interstate 70 in Ohio near mile marker 143, and between
mile markers
145 and 155.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3995 8223 3995 8220 4023 8218 4024 8220
4039 8219 4041 8196 4004 8198 3977 8202
3977 8207 3982 8208 3982 8217 3991 8216
3991 8223
TIME...MOT...LOC 0050Z 235DEG 40KT 4022 8233 3980 8232
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
FrazierPreliminary Local Storm Report
National Weather Service Pittsburgh PA
900 PM EDT Sun Jul 02 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0845 PM Flash Flood Goshen 40.45N 81.41W
07/02/2023 Tuscarawas OH 911 Call Center
State Route 416 closed near County Road 259 due to high
water.
&&
Event Number PBZ2301898
JFSpecial Weather Statement
National Weather Service Pittsburgh PA
913 PM EDT Sun Jul 2 2023
OHZ057-058-030145-
Guernsey OH-Muskingum OH-
913 PM EDT Sun Jul 2 2023
...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN GUERNSEY AND EAST
CENTRAL MUSKINGUM COUNTIES THROUGH 945 PM EDT...
At 913 PM EDT, Doppler radar was tracking a strong thunderstorm near
New Concord, or 7 miles southwest of Cambridge, moving northeast at
30 mph.
HAZARD...Wind gusts up to 50 mph and half inch 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...
Cambridge, New Concord, Byesville, Senecaville, Pleasant City, Lore
City, and Old Washington.
This includes the following highways...
Interstate 70 in Ohio between mile markers 167 and 186.
Interstate 77 in Ohio between mile markers 38 and 49.
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.
&&
LAT...LON 4009 8164 4005 8146 3994 8142 3985 8173
3996 8181
TIME...MOT...LOC 0113Z 245DEG 24KT 3994 8168
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH
FrazierSpecial Weather Statement
National Weather Service Pittsburgh PA
915 PM EDT Sun Jul 2 2023
OHZ039-048-057-058-030145-
Guernsey OH-Tuscarawas OH-Coshocton OH-Muskingum OH-
915 PM EDT Sun Jul 2 2023
...STRONG THUNDERSTORMS WILL IMPACT NORTHWESTERN GUERNSEY...
SOUTHEASTERN COSHOCTON...MUSKINGUM AND SOUTHERN TUSCARAWAS COUNTIES
THROUGH 945 PM EDT...
At 915 PM EDT, Doppler radar was tracking a cluster of strong
thunderstorms along a line extending from near Coshocton to near
South Zanesville. Movement was east at 55 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...
Zanesville, Coshocton, New Concord, West Lafayette, South Zanesville,
North Zanesville, Dresden, Philo, Pleasant Grove, Conesville,
Plainfield, Norwich, Cannelville, High Hill, Chandlersville,
Bridgeville, Duncan Falls, Otsego, Drake, and Ruraldale.
This includes the following highways...
Interstate 70 in Ohio between mile markers 153 and 175.
Interstate 77 in Ohio near mile marker 58.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 4038 8178 4019 8155 3979 8175 3977 8206
4029 8203
TIME...MOT...LOC 0115Z 250DEG 48KT 4025 8194 3987 8197
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
FrazierSpecial Weather Statement
National Weather Service Pittsburgh PA
917 PM EDT Sun Jul 2 2023
PAZ021-073-030145-
Westmoreland PA-Allegheny PA-
917 PM EDT Sun Jul 2 2023
...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN ALLEGHENY AND
NORTHWESTERN WESTMORELAND COUNTIES THROUGH 945 PM EDT...
At 917 PM EDT, Doppler radar was tracking a strong thunderstorm over
Penn Hills, moving east at 35 mph.
HAZARD...Wind gusts up to 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Pittsburgh, Penn Hills, Monroeville, Shaler Township, Plum,
Murrysville, Wilkinsburg, New Kensington, Lower Burrell, Munhall,
Swissvale, O'hara Township, Forest Hills, Wilkins Township, Oakmont,
Fox Chapel, Turtle Creek, Arnold, North Braddock, and Etna.
This includes the following highways...
Pennsylvania Turnpike between mile markers 45 and 58.
Interstate 376 in Pennsylvania between mile markers 73 and 84.
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.
&&
LAT...LON 4041 7996 4053 7997 4057 7986 4061 7962
4050 7950 4041 7949
TIME...MOT...LOC 0117Z 256DEG 31KT 4046 7983
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
FrazierThe Pittsburgh radar (KPBZ), 28 km away, was scanning. The volume nearest the first event began at 01:30 UTC.
1 flash flood. Local standard time, as filed.
Several intersections were closed in Aspinwall, including Freeport Road and Center Avenue, Freeport Road and Delafield Road, and Delafield Road and 2nd Street.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2023Every state in 2023This day in weather historyWarnings in Pennsylvania, July 2023
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: 1121130.