A wavy and nearly stationary frontal boundary was in place near the Mason-Dixon Line. Morning clouds hindered destabilization somewhat, but afternoon clearing and the arrival of a mesoscale low allowed storms to blossom during the afternoon and evening.
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.
A wavy and nearly stationary frontal boundary was in place near the Mason-Dixon Line. Morning clouds hindered destabilization somewhat, but afternoon clearing and the arrival of a mesoscale low allowed storms to blossom during the afternoon and evening. Although a few wind damage reports were received, flash flooding was the main focus of this event. Brooke County was the only area affected from this event, with roadway flooding and a landslide reported.
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 Jun 10, 4:21 PM EST, 2 hours 54 minutes earlier.
Area Forecast Discussion National Weather Service Pittsburgh PA 521 PM EDT Sun Jun 10 2018 .SYNOPSIS... Rounds of showers and thunderstorms will continue into Monday morning as disturbances interact with a wavy frontal boundary. A brief break later Monday and Monday night may be followed by more rain Tuesday. && .NEAR TERM /UNTIL 6 AM MONDAY MORNING/... As of 5:15pm, bulk of showers and thunderstorms are across eastern Ohio, and will be making progress into the northern WV panhandle and western PA in the next hour or two. Although severe weather and flooding will not be widespread, there is an isolated threat of both, with both types of warnings having already been issued across eastern Ohio. There should eventually be a few hour lull before additional activity arrives from Indiana. Previous discussion follows. PoPs were maximized across the central and southern counties, where best instability lies along with the wavy surface boundary. Severe storm risk will be limited to a downburst or two at most across the south into early evening, where best midlevel dry air/DCAPE lies. Of more concern will be the potential for heavy rainfall, given the high PWAT and deep warm cloud depths promoting efficient rain processes. The lowest FFG values lie across southwest PA near and north of I-70, with a bit higher values westward into southeast Ohio. Isolated flooding issues are certainly a possibility, and a short-fuse Flash Flood Watch cannot be ruled out. Precipitation coverage should slowly wane towards morning as instability is lost and the MCV helps to force the front southward, although outflow boundaries may keep some showers and storms going in some areas. Temperatures will remain near or just above seasonal levels for the night. && .SHORT TERM /6 AM MONDAY MORNING THROUGH TUESDAY NIGHT/... The front should eventually be pushed south of the Mason-Dixon line on Monday and remain there Monday night, although uncertainty remains as to how far south it actually gets. Have tailored PoPs to this thinking. Any heavy rain threat will be confined to the far south, where enough instability may lie for afternoon/evening thunderstorms. The next shortwave approaches from the Ohio Valley on Tuesday with another round of showers and thunderstorms. Isolated heavy rain will continue to be a threat as PWAT surges again, and the moist ground could once again promote isolated flooding concerns. Temperatures will be near or below normal Monday/Monday night before warming a bit Tuesday. && .LONG TERM /WEDNESDAY THROUGH SUNDAY/... Precipitation will linger into Wednesday as a cold front completes its passage, and is still expected to mostly end by Wednesday night, with the pattern remaining dry through Thursday. Uncertainty in how far south the boundary gets does continue though, and a slight chance PoP was maintained in the grids across the south. A shortwave on Friday may bring some showers, but this system should then push the front far enough south to provide a mostly dry weekend for the region. Temperatures will warm above normal during this period as well. && .AVIATION /21Z SUNDAY THROUGH FRIDAY/... Ceilings will gradually improve this afternoon south of the frontal boundary that is situated across the upper Ohio Valley with ample mixing. Further north toward FKL and DUJ however, VFR may not be experienced for long or at all. Most of the hi res guidance indicates that showers and thunderstorms will fire as a result of the remnant convection over OH/IN interacting with the surface boundary this eve with a more organized area of rain, associated with an approaching upper level shortwave, passing tonight. As such, have adjusted the timing of thunder and showers back a few hours. Anticipate brief low MVFR/IFR restrictions in any stronger storms, with widespread IFR cigs most likely returning areawide as the aforementioned disturbance pushes the boundary southward once again. Boundary should be in the vicinity of the Mason-Dixon line by Monday morning. Think, similarly to this morning, IFR/low MVFR restrictions will be slow to improve through midday. Wind may gust south of the front where surface heating is greatest this afternoon, but generally expect light surface flow to continue. OUTLOOK... Another disturbance and cold front are slated to generate showers and storms again on Tuesday and Wednesday. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. &&
Hazardous Weather Outlook National Weather Service Pittsburgh PA 256 AM EDT Sun Jun 10 2018 PAZ007>009-013>016-022-023-110700- Mercer-Venango-Forest-Lawrence-Butler-Clarion-Jefferson-Armstrong- Indiana- 256 AM EDT Sun Jun 10 2018 This Hazardous Weather Outlook is for northwest Pennsylvania, west central Pennsylvania and western Pennsylvania. .DAY ONE...Today and Tonight. No hazardous weather is expected at this time. .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. MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ020-021-029-031-073>076- WVZ001>004-012-021-509>514-110700- Garrett-Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson- Muskingum-Guernsey-Belmont-Noble-Monroe-Beaver-Allegheny-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- 256 AM EDT Sun Jun 10 2018 This Hazardous Weather Outlook is for western Maryland, east central Ohio, southwest Pennsylvania, western Pennsylvania, northern West Virginia and northern panhandle of West Virginia. .DAY ONE...Today and Tonight. Multiple rounds of showers and thunderstorms could lead to localized flooding through 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.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
644 PM EDT SUN JUN 10 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0638 PM FLASH FLOOD 1 E JEFFERSON HILLS 40.29N 79.92W
06/10/2018 ALLEGHENY PA 911 CALL CENTER
ROADWAY FLOODING ALONG ROUTE 51 IN JEFFERSON HILLS
&&
EVENT NUMBER PBZ1803105
MFPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
650 PM EDT SUN JUN 10 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0510 PM FLASH FLOOD SALINEVILLE 40.62N 80.84W
06/10/2018 COLUMBIANA OH 911 CALL CENTER
FLOODED ROADWAYS IN SALINEVILLE, OH
&&
EVENT NUMBER PBZ1803106
MFPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
752 PM EDT SUN JUN 10 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0638 PM FLASH FLOOD 1 E JEFFERSON 40.30N 79.92W
06/10/2018 ALLEGHENY PA 911 CALL CENTER
1675 STATE ROUTE 51 FLOODED
0641 PM FLASH FLOOD 1 SW WHITE OAK 40.33N 79.81W
06/10/2018 ALLEGHENY PA 911 CALL CENTER
FLOODING AT LONG RUN RD AND COOL SPRINGS RD
0643 PM FLASH FLOOD WEST ELIZABETH 40.27N 79.90W
06/10/2018 ALLEGHENY PA 911 CALL CENTER
FLOODING AT 6TH ST AND BURNETTE ST
0713 PM FLASH FLOOD 1 SE CARRICK 40.39N 79.98W
06/10/2018 ALLEGHENY PA 911 CALL CENTER
OCCUPIED VEHICLE STUCK IN WATER
0715 PM FLASH FLOOD GRATZTOWN 40.23N 79.78W
06/10/2018 WESTMORELAND PA 911 CALL CENTER
ROADWAY FLOODING AT 258 SUTERSVILLE RD
&&
EVENT NUMBER PBZ1803107
EVENT NUMBER PBZ1803108
EVENT NUMBER PBZ1803109
EVENT NUMBER PBZ1803110
EVENT NUMBER PBZ1803111
TGREENPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
759 PM EDT SUN JUN 10 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0520 PM FLASH FLOOD TROTTER 40.01N 79.63W
06/10/2018 FAYETTE PA 911 CALL CENTER
FLOODING ON ROADWAYS IN DUNBAR TOWNSHIP
&&
EVENT NUMBER PBZ1803112
MFPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
803 PM EDT SUN JUN 10 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0729 PM FLASH FLOOD 1 W CROOKHAM 40.21N 80.01W
06/10/2018 WASHINGTON PA 911 CALL CENTER
WATER RESCUE AT MINGO CREEK RD AND LITTLE MINGO RD
0730 PM FLASH FLOOD ELWOOD PARK 40.16N 80.27W
06/10/2018 WASHINGTON PA 911 CALL CENTER
PERSON STUCK IN VEHICLE AT W CHESTNUT ST AND FRANKLIN
FARMS RD
0739 PM FLASH FLOOD SUTERSVILLE 40.24N 79.81W
06/10/2018 WESTMORELAND PA 911 CALL CENTER
RESIDENTIAL FLOODING ON 1ST AVE
0739 PM FLASH FLOOD HACKETT 40.25N 80.02W
06/10/2018 WASHINGTON PA 911 CALL CENTER
VEHICLE STUCK AT AIRPORT RD AND RANKINTOWN RD
&&
EVENT NUMBER PBZ1803113
EVENT NUMBER PBZ1803114
EVENT NUMBER PBZ1803115
EVENT NUMBER PBZ1803116
TGREENPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
813 PM EDT SUN JUN 10 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0738 PM FLASH FLOOD 1 ENE OVERBROOK 40.39N 79.98W
06/10/2018 ALLEGHENY PA 911 CALL CENTER
BECKS RUN RD CLOSED BETWEEN BRONSVILLE RD AND RAVEN ST
0746 PM FLASH FLOOD LOWBER 40.25N 79.77W
06/10/2018 WESTMORELAND PA 911 CALL CENTER
FLOODING AT LILY ST AND DAISY ST AND 184 LOWBER RD
0748 PM FLASH FLOOD 1 E BELLEVUE 40.16N 80.24W
06/10/2018 WASHINGTON PA 911 CALL CENTER
STATE ROUTE 18 CLOSED AT S MAIN ST
0809 PM FLASH FLOOD LINHART 40.42N 79.81W
06/10/2018 ALLEGHENY PA 911 CALL CENTER
FLOODING AT THOMPSON RUN RD AND LARIMER AVE
0810 PM FLASH FLOOD DRAVOSBURG 40.35N 79.90W
06/10/2018 ALLEGHENY PA 911 CALL CENTER
FLOODING AT SANDY LAKE ALONG MACARTHUR DR
&&
EVENT NUMBER PBZ1803117
EVENT NUMBER PBZ1803118
EVENT NUMBER PBZ1803119
EVENT NUMBER PBZ1803120
EVENT NUMBER PBZ1803121
TGREENThe Pittsburgh radar (KPBZ), 46 km away, was scanning. The volume nearest the first event began at 00:15 UTC.
1 flash flood. Local standard time, as filed.
A trained NWS spotter has reported a flooded roadways near Route 67 and a landslide along Route 2 (south of Wellsburg).
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in West Virginia in 2018Every state in 2018This day in weather historyWarnings in West Virginia, June 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: 768079.