Yet another day of showers and thunderstorms with heavy rain passed over Allegheny county, Pennsylvania. After 3 prior days of rain, flash flood guidance was less than an inch over the region.
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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.
Yet another day of showers and thunderstorms with heavy rain passed over Allegheny county, Pennsylvania. After 3 prior days of rain, flash flood guidance was less than an inch over the region. Once again, flash flooding was reported over southern parts of the county but flooding was also reported over northern Allegheny county as well. There was also some reports of flooding in Westmoreland, Pennsylvania. A disaster declaration was issued for Port Vue and Glassport.
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 16, 12:19 PM EST, 1 hour 32 minutes earlier.
Area Forecast Discussion National Weather Service Pittsburgh PA 119 PM EDT Fri Jun 16 2017 .SYNOPSIS... Scattered showers and thunderstorms are possible again today, though expected to be less widespread than yesterday. Saturday will offer a break before more widespread showers and storms return Sunday. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... Between noon and 1pm, a line of showers and thunderstorms has developed across central portions of the forecast area. Have added categorical mention of rain along the line. Luckily, so far the line only has scattered coverage across Allegheny County, one of the areas that received the heaviest rainfall over the last three days. Also added heavy rain mention in the forecast as well. With noon update, brought slight chance pops farther west through the afternoon. While there is a bit of a lull in precipitation across the WV/MD ridges as of noon, the showers and thunderstorms that have developed over the last hour have been a bit farther west than expected. Previous... Shortwave trough will get hung up over the Mid- Atlantic region this afternoon, and models are hinting that storms could re-fire over the southeast and ridges. This is in response to the aforementioned shortwave and also there will be an east- southeast flow on the other side of the ridges which will promote low-level moisture convergence along the higher elevations. Cloud cover will be a little tricky as drier air is diving southward behind the exiting trough, but still plenty of moisture gets hung up on its northern flank. Would expect to see a clearing line moving southward this morning, but how far south it makes it is still uncertain. Additionally, with surface dewpoints still well into the 60s, cu would likely develop in areas that see sun. High temps will be a couple of degrees cooler then Thursday. && .SHORT TERM /6 PM THIS EVENING THROUGH SUNDAY/... Models are now showing a drier Saturday, with temperatures rising under strong southerly flow. The next shortwave trough is a little slower on the latest model runs, with most of the large scale ascent spinning northward over the Great Lakes by late in the day. Have lowered PoPs on Saturday, but kept a mention in the ridges, as a southeastern low level flow could produce some pop-up activity in these locales during the afternoon. If we can get the sun involved, should see a well mixed atmosphere, which will lead to very warm temps. Noticeably deeper trough will dig into the Western Great Lakes on Sunday, and waves of energy will spin eastward ahead of the main upper level system. The first wave will cross Sunday morning, returning the risk for showers. More substantial activity will develop Sunday afternoon ahead of the slow moving surface front and a stronger shortwave. Still a good deal of uncertainty on the timing and strength of convection late Sunday, so this part of the forecast will be modified over the next couple of days. && .LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/... Showers/thunderstorms should continue into at least Monday morning, as the surface front gets hung up Sunday night with the development of a surface low southwest of the area. This may hold up complete frontal passage until Monday afternoon. The upper trough is progged to persist across the NE CONUS through mid week. Temperatures are expected to return to near seasonal levels. && .AVIATION /17Z FRIDAY THROUGH TUESDAY/... MVFR stratus will linger into the afternoon at DUJ and MGW, but otherwise VFR is expected at the rest of sites with developing cu. Low level moisture convergence and instability will allow for showers and storms to refire across southeastern portions of the region today. While this has not been added to ANY taf site yet, amendments may be needed based on hi res guidance and mesoanalysis. Expect some fog again overnight with plenty of moisture in the low levels from recent rainfall. .Outlook... Occasional restrictions are expected through the weekend with some morning fog and afternoon showers/thunderstorms. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. &&
Hazardous Weather Outlook...UPDATED National Weather Service Pittsburgh PA 427 AM EDT Fri Jun 16 2017 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029-031-073>076-WVZ001>004-012-021-509>514-170830- 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- 427 AM EDT Fri Jun 16 2017 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...Saturday through Thursday. Widespread showers and storms are possible again Sunday and Sunday night. This could potentially bring more heavy rain and increase the threat of flooding. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1025 AM EDT FRI JUN 16 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0346 PM TSTM WND DMG 1 W MCCANDLESS TOWNSHIP 40.58N 80.04W
06/15/2017 ALLEGHENY PA DEPT OF HIGHWAYS
TWO UPROOTED TREES AND SIX TREES SHEARED OFF 3/4 OF THE
WAY UP
&&
EVENT NUMBER PBZ1701602
98The Pittsburgh radar (KPBZ), 29 km away, was scanning. The volume nearest the first event began at 18:52 UTC.
5 flash flood, 1 debris flow. Local standard time, as filed.
County 911 reported flooding at Streets Run Road at Prospect Road, Homestead Duquesne Road at Lower Bull Run Road, and Lebanon Church Road at Lebanon Road with 1 vehicle stuck in the floodwaters.
County 911 reported flooding on Lysle Blvd and Evans Ave in McKeesport, Libery Way and Glenn Ave in Liberty. In addition, a occupied vehicle was stuck in rising water at the intersection of Washington Ave and Curry Hollow Road and a vehicle was stuck in floodwaters and struck by a landslide at 702 Washington Ave in Dravosburg.
State official reported that Greenock Buena Vista Road at Henderson Road was flooded with a partial hill collapse.
Local 911 reported that a rock slide was occurring on Route 51 near Pleasant Hills Blvd.
County 911 reported that swift water teams were assisting with evacuating businesses along McKnight Road in Ross township. Over 2 feet of water was reported to be covering the intersection of McKnight and Siebert Road.
Local 911 reported several roadways flooded around Murrysville including Athena Drive at Lauffer Mine Road and Route 66.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2017Every state in 2017This day in weather historyWarnings in Pennsylvania, June 2017
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: 711455, 711445, 711456, 711450, 711443, 711444.