Warm sector convection ahead of an approaching cold front spawned thunderstorms, some of which were severe. An axis of up to 1000 J/kg of MLCAPE nosed up to Pittsburgh metro with strong effective shear as high as 60 knots.
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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.
Warm sector convection ahead of an approaching cold front spawned thunderstorms, some of which were severe. An axis of up to 1000 J/kg of MLCAPE nosed up to Pittsburgh metro with strong effective shear as high as 60 knots. Hail and wind damage were reported with up to 1.5 inch hail, a measured 64 mph wind gust at a home weather station, and trees down on wires.
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 Mar 11, 4:10 AM EST, 8 hours 20 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Pittsburgh PA 510 AM EDT Wed Mar 11 2026 .WHAT HAS CHANGED... Little change in the overall severe threat for today. Severe weather in early morning convection is unlikely. Two rounds of mid/late morning and mid afternoon thunderstorms will be the greatest threat for severe weather (primarily damaging wind and tornadoes). Some uncertainty remains with cold frontal convection, but indications point to a weaker, less-organized line. && .KEY MESSAGES... 1) Widespread rain and severe thunderstorm chances today 2) Windy and cooler late week with rain/snow chances && .DISCUSSION... KEY MESSAGE 1... Surface low pressure will deepen and cross the Great Lakes today. Broad ascent under diffluent mid-level flow with warm and moist advection should support several rounds of showers and thunderstorms before a cold front passes this evening. Severe thunderstorms, capable of producing strong damaging wind gusts, tornadoes, and hail, will be most likely during the late morning and afternoon rounds of convection. Confidence in severe storms along/just ahead of the cold front is lower. This morning finds us already in the open warm sector with the nearest leading convection across northern Indiana, NW Ohio, and into southern Ontario. CAMs do still generally show a few showers/thunderstorms developing near daybreak over Ohio and crossing into western PA, but coverage and intensity of this convection is far less than previously advertised. More significant convection remains north of our forecast area. Regardless, any thunderstorms this early are likely to remain elevated given the stable near-surface profiles. This will significantly throttle wind and tornado potential, and lacking mid-level thermodynamics will limit hail. It appears the first major round of convection does not arrive in eastern Ohio until mid-morning, crossing the Pittsburgh metro area closer to noon. By this point, an 850-700 mb low level jet will have ramped up with convective coverage on its nose. MLCAPE values are progged to around 500 J/kg, hodographs elongate, and HREF mean 0-1 km SRH exceeds 200 m2/s2. This indicates a ripe, but conditional, environment for rotating storms. By this point, most CAMs paint little near-surface updraft helicity tracks, but this could be misleading as profiles look more isothermal or weakly unstable rather than stable. With strong kinematics and low LCLs with reinforced surface moisture, it's certainly plausible that those are enough to overcome marginal thermodynamic profiles and this round poses a wind and tornado threat, conditional on storms being truly rooted at the surface. Uncertainty increases heading into mid/late afternoon. CAMs model two distinct scenarios. The favored and increasingly probable scenario -- depicted by a majority of CAMs -- drives a second cluster of thunderstorms through the area by mid- afternoon, trailing the morning round by roughly 2-3 hours. The critical question then becomes whether the environment can adequately recover to support a second round of organized severe convection. Modeled CAPE values recovering above 1000 J/kg offer some optimism, though lingering cloud debris and a compressed recovery window introduce considerable uncertainty. Storm mode for this round trends mixed, with CAMs depicting a combination of clustered/linear features alongside discrete cells. This would pose the greatest tornado and damaging wind potential given sufficient recovery. The minority scenario, offered by the 3K NAM and a few NSSL MPAS CAMs, clears the area of convection near midday ahead of the cold frontal passage this evening. Peak forcing arrives with the cold front this evening. The minority scenario would afford ample recovery time ahead of frontal convection, yielding a strong QLCS with damaging winds and an embedded tornado through the early evening. Though this would represent the greatest severe threat for the day, and possibly prompt an upgrade to Enhanced, this solution remains increasingly unlikely. The more probable outcome with mid- afternoon convection leaves little opportunity for environmental recovery despite continued south-southwesterly flow. In this scenario, frontal convection organizes into a weaker, less- organized line with a more limited severe threat. Given the lingering uncertainty, the Slight Risk has been maintained. KEY MESSAGE 2... The aforementioned cold front will usher in a much cooler and drier airmass in its wake with dew points crashing into the teens and 20s by Thursday afternoon. Strong cold advection will provide an opportunity for some light snow showers in the afternoon as well, but accumulation should be minimal at best with ground temperatures needing a bit of time to react. In the ridges with persistent upslope flow, can't rule out a few tenths of an inch. Steepened lapse rates and mixing will provide gusts to 25-30 mph. Friday looks to be the windiest day as low pressure crosses off to our north. The best forcing looks to be in that direction as well, but if the low nudges a bit farther south, warm advection will drive some light snow showers primarily north of Pittsburgh. NBM 90th percentile only suggests around an inch at the worst case scenario. Strong wind gusts are likely to be most impactful on Friday with a tightening gradient. NBM probability of Wind Advisory criteria (46+ mph gusts) range from about 50-70% for a large portion of the region. Eastern Tucker County shows similar probability to reach High Wind Warning criteria (58+ mph), so wind headlines may be needed. && .AVIATION /09Z WEDNESDAY THROUGH SUNDAY/... With the region well within the warm sector, warm moist advection will promote shower and storm development this morning ahead of a cold front approaching from the west. Latest ensembles show 80-100% probabilities for MVFR conditions areawide during the day and a 50-70% chance of IFR spreading from north to south this later this afternoon and this evening across the region. There will be severe potential with storms, especially from mid-afternoon through mid-evening. Much will depend on earlier convection, so expect amendments to address timing/conditions at most ports through the day. The main impact is expected to be damaging winds, but large hail and tornadoes cannot be ruled out either. Several rounds of convection will be possible, and have highlighted this in latest TAFs with PROB30s for now given the timing uncertainty. Winds are expected to ramp up through the day with WSW winds gusting up to 30 knots in some instances. Outlook... Rain will transition to snow late tonight into Thursday behind the front. Cig restrictions and gusty wind are likely Thursday in cold NW flow and with a crossing upper trough. Restrictions, gusty wind, rain and snow are likely to continue Friday with another crossing cold front. VFR returns Saturday under high pressure. Restrictions are possible Sunday with a crossing warm front. && .PBZ WATCHES/WARNINGS/ADVISORIES... PA...None. OH...None. WV...None. && DISCUSSION...Rackley/MLB AVIATION...88
Hazardous Weather Outlook National Weather Service Pittsburgh PA 210 AM EDT Wed Mar 11 2026 OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>022-029- 031-073>078-WVZ001>004-012-021-509>513-120615- 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- 210 AM EDT Wed Mar 11 2026 This Hazardous Weather Outlook is for east central Ohio, western Pennsylvania, and northern West Virginia. .DAY ONE...Today and tonight. Showers and thunderstorms return this morning with several rounds before a cold front crosses this evening. Some storms may be strong to severe, particularly in the afternoon hours. Damaging wind gusts will be the main threat, though tornadoes are possible. A Slight Risk (level 2 of 5) is outlooked. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Strong wind gusts are possible Friday with probability of exceeding Wind Advisory criteria (46 mph) around 50-70%. Wind headlines may be needed. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. WVZ514-120615- Eastern Tucker- 210 AM EDT Wed Mar 11 2026 This Hazardous Weather Outlook is for northern West Virginia. .DAY ONE...Today and tonight. Showers and thunderstorms return this morning with several rounds before a cold front crosses this evening. Some storms may be strong to severe, particularly in the afternoon hours. Damaging wind gusts will be the main threat, though tornadoes are possible. A Slight Risk (level 2 of 5) is outlooked. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Strong wind gusts are possible Friday with probability of exceeding High Wind Warning criteria (58 mph) around 50-90%. Wind headlines may be needed. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. RACKLEY
The Pittsburgh radar (KPBZ), 122 km away, was scanning. The volume nearest the first event began at 17:27 UTC.
1 thunderstorm wind. Local standard time, as filed.
Trees were reported down along Bracken Ridge Road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2026Every state in 2026This day in weather historyWarnings in Ohio, March 2026
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: 1322790.