5 inches of rain in western Muskingum County, resulting in flash flooding.
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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.
A slow-moving thunderstorm during the evening of May 13th produced between 2 and 3.5 inches of rain in western Muskingum County, resulting in flash flooding.
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 May 13, 2:37 PM EST, 4 hours 13 minutes earlier.
Area Forecast Discussion National Weather Service Pittsburgh PA Issued by National Weather Service Charleston WV 337 PM EDT Tue May 13 2025 .SYNOPSIS... An upper level low will maintain periodic showers and thunderstorms across the region today into tomorrow; heavy rain will be the main threat. A cold front is expected to approach and cross the region Thursday night into Friday, with strong to severe storms possible. && .NEAR TERM /THROUGH TONIGHT/... KEY MESSAGES: - Showers continue today - Thunderstorms possible for eastern Ohio and south of Pittsburgh - Slow moving and/or training thunderstorms could create minor flooding - Patchy fog expected late tonight into early tomorrow morning. ------------------------------------------------------------------- Outflow from earlier convection over the ridges has spread across much of the region. Despite warm cloud layers aloft, thunderstorm activity has remained mainly concentrated over eastern Ohio and areas south of Pittsburgh. This is partially due to lingering dry air over central West Virginia. With effective shear below 20kts and DCAPE values under 300J/kg across the area, severe storms are not expected. The primary threat will be lightning and heavy rainfall from slow-moving or training storms. While the duration of moderate to heavy rainfall has decreased over the ridges, isolated thunderstorms passing through these areas could still lead to minor flooding if rainfall rates exceed 1 inch per hour. Showers and storms are expected to persist through late evening and into the overnight hours as an upper-level low gradually lifts northward from the Tennessee River Valley into the Ohio River Valley. High- resolution models show a decreased probability of heavy rainfall between 9pm to 11pm tonight. With warm, moist air lingering and light winds overnight, the potential for fog increases. Areas most susceptible include regions south of Pittsburgh, along the ridges, and in the vicinity of where I-77 meets I-70. && .SHORT TERM /WEDNESDAY/... KEY MESSAGES: - Probability of fog decreases between 8am and 10am - Isolated showers expected early to early afternoon - Late afternoon/late evening thunderstorms expected across the region Wednesday ---------------------------------------------------------------- A moist atmosphere will allow fog to persist through 10am tomorrowing. The previously mentioned upper-level low will remain over the Upper Ohio Valley through Wednesday, bringing additional rounds of showers from the early to late morning hours. However, due to the lack of a strong lifting mechanism, shower coverage is expected to remain isolated. Thunderstorm potential increas across the region between 2pm to 4pm Wednesday as surface heating aligns with an approaching shortwave. Despite weak effective shear (10-20kts) and DCAPE values below 500J/kg, heavy rainfall remains the primary threat, with PWATs holding near 1.50 inches- above seasonal average. && .LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/... KEY MESSAGES: - Addition severe storm potential on Friday - Unsettled weather through the weekend ------------------------------------------------------------------- A lead shortwave trough, ahead of a main central CONUS trough, is expected to approach and cross the region late Thursday night, along with its associated surface cold front. Speed and directional shear is expected to increase with the approach of the trough, as instability is maintained Thursday night. Severe storms are likely to develop to the west of the region late Thursday, tracking eastward Thursday night. The greatest uncertainty is the amount of instability that remains across the Upper Ohio Valley region overnight, which would impact the severe weather potential. Some of the latest model data indicates the potential that these storms could be maintained well into the overnight hours. Model ensembles indicate a trough will track slowly eastward across the Upper Midwest to the Upper Ohio Valley region Friday and Saturday. The surface front is expected to slow its progress on Friday as the upper level flow becomes parallel to the front. Enough instability and shear is expected again by Friday afternoon, with additional strong to severe storms possible. The morning convection could also have an impact on this potential. The trough axis is expected to cross the region on Saturday, with additional showers possible. Lower chances for showers are expected on Sunday as the trough exits. A ridge building in behind the exiting trough, and ahead of a Western CONUS trough, should return dry weather to the region by Monday. && .AVIATION /18Z TUESDAY THROUGH SUNDAY/... Scattered rain will continue through the afternoon and into the evening, with a few non-severe thunderstorms possible later in the afternoon, primarily south and east of PIT where latest mesoanalysis shows MLCAPE values around or higher than 500J/kg, and overall cloud coverage is more dense. Cigs remain a challenge as guidance continues to show a large spread in values. Overall, low-end VFR or MVFR is expeted through the afternoon/evening, followed by more widespread MVFR overnight. LAMP/MOS gudiance is in general more aggressive with IFR, but for now have left IFR restrictions out of TAFS overnight. If IFR does develop, it is more likely west of a line running from DUJ to ZZV where ensemble guidance shows 40-60% chance, but that is over a 6 hour window. Outlook... Restrictions and periods of showers with afternoon thunderstorms will continue into Wednesday before the upper level low shifts east of the region. Brief VFR under ridging Thursday will give way to a fast-moving low pressure system Thursday night into Friday. && .PBZ WATCHES/WARNINGS/ADVISORIES... PA...None. OH...None. WV...None. && SYNOPSIS...Hefferan NEAR TERM...Hefferan SHORT TERM...Hefferan LONG TERM...WM AVIATION...88
Hazardous Weather Outlook National Weather Service Pittsburgh PA 342 AM EDT Tue May 13 2025 OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>022-029- 031-073>078-WVZ001>004-012-021-509>513-140745- Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson OH- Muskingum-Guernsey-Belmont-Noble-Monroe-Mercer-Venango-Forest- Lawrence-Butler-Clarion-Jefferson PA-Beaver-Allegheny-Armstrong- Washington-Greene-Westmoreland-Higher Elevations of Westmoreland- Fayette-Higher Elevations of Fayette-Indiana- Higher Elevations of Indiana-Hancock-Brooke-Ohio-Marshall-Wetzel- Marion-Monongalia- Ridges of Eastern Monongalia and Northwestern Preston-Preston- Eastern Preston-Western Tucker- 342 AM EDT Tue May 13 2025 This Hazardous Weather Outlook is for east central Ohio, western Pennsylvania, and northern West Virginia. .DAY ONE...Today and tonight. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. There is a Marginal Risk, or level 1 out of 5, for severe thunderstorms Thursday night. There is also a potential for severe storms on Friday. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. WVZ514-140745- Eastern Tucker- 342 AM EDT Tue May 13 2025 This Hazardous Weather Outlook is for northern West Virginia. .DAY ONE...Today and tonight. Locally heavy rainfall is possible today into this evening. This could lead to localized flooding. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Locally heavy rainfall is possible again on Wednesday, which could lead to localized flooding. In addition, there is a Marginal Risk, or level 1 out of 5, for severe thunderstorms Thursday night. There is also a potential for severe storms on Friday. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. WM
The Cleveland radar (KCLE), 152 km away, was scanning. The volume nearest the first event began at 23:51 UTC.
4 flash flood. Local standard time, as filed.
Flooding was reported on State Route 60 between Zanesville and Dresden.
Near the Muskingum County Speedway, water was flowing over the road.
Flooding was reported on Fairview Road near the Green Valley Golf Course, with a culvert uplifted.
At the intersection of National Road and Timber Run Road, water was reported on the road, with a water rescue needed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2025Every state in 2025This day in weather historyWarnings in Ohio, May 2025
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: 1265630, 1265631, 1265632, 1265633.