A passing shortwave trough and surface cold front brought scattered showers and thunderstorm on July 11th. Increasing shear, building instability, and mid-level dry resulted in a few strong storms across the area.
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 passing shortwave trough and surface cold front brought scattered showers and thunderstorm on July 11th. Increasing shear, building instability, and mid-level dry resulted in a few strong storms across the area. Unseasonably high warm cloud depth created impressive rainfall rates, contributing to 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 Jul 11, 6:56 AM EST, 6 hours 11 minutes earlier.
Area Forecast Discussion National Weather Service Pittsburgh PA 756 AM EDT Thu Jul 11 2019 .SYNOPSIS... Scattered showers and thunderstorms this morning should become more numerous this afternoon with the approach of a cold front. Dry weather is then expected Friday and most of Saturday under high pressure. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... Updated short term PoPs and temperature to reflect radar and surface observation trends. Areas of stronger convection are producing moderate to heavy rain, with minor flooding in urbanized areas expected. Previous discuss follows... A shortwave trough should maintain scattered showers and thunderstorms this morning as it crosses the region. Included more numerous coverage early N of PIT based on radar/near term model trends. A stronger trough, and its associated sfc cold front, is progged to track across the Upper Midwest and Great Lakes region today, crossing the Upper OH Valley region late this afternoon and evening. Showers and thunderstorms are likely with its approach and passage. Increasing shear, building instability, and model progged mid level dry air should result in a scattered severe storm potential, with the main hazard being damaging wind. SPC maintained the slight risk/scattered coverage potential in the day 1 outlook, and will continue to highlight this potential in the Hazardous Weather Outlook. Warm and humid conditions should continue, with highs a few degrees above average. && .SHORT TERM /6 PM THIS EVENING THROUGH SATURDAY NIGHT/... Shower/thunderstorm chances should quickly decrease tonight with the passage of the cold front. Mainly dry weather is then expected through most of Saturday as sfc high pressure builds under NW flow aloft. The next shortwave trough and its associated cold front is progged to track from the Upper Great Lakes to the Lower Lakes by Saturday evening, returning low chances for showers and thunderstorms N of I 80. Maintained only a slight chance for showers Saturday night elsewhere as the front tracks south, though most of the upper support is progged to stay N-NE of the area. Cooler and less humid conditions are expected Friday before warmer, more humid conditions return Saturday. && .LONG TERM /SUNDAY THROUGH WEDNESDAY/... Shower and thunderstorm chances should continue S of I 70 Sunday as the cold front completes its passage. Model ensembles indicate ridging is then expected to build across the region through Tuesday, with mainly dry weather. Shower/thunderstorm chances return by midweek as a Gulf upper low moves N and phases with wrly flow aloft, tracking across the OH Valley region. Seasonably warm weather is expected through the period. && .AVIATION /12Z THURSDAY THROUGH MONDAY/... Condition deterioration is expected as the day progresses. More widespread convection will result from prefrontal troughing/increasing forcing for ascent under an encroaching upr trough. The magnitude of that convection remains questionable as clouds and morning showers are likely to hamper destabilization. Passage of the cold front will end the convection, but residual, rain-enforced boundary-layer moisture with cooler nw flow is likely to yield cig restrictions into Friday morning. .Outlook... The next chc for restrictions is anticipated with a Saturday night shortwave/cdfnt passage. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. &&
Hazardous Weather Outlook National Weather Service Pittsburgh PA 338 AM EDT Thu Jul 11 2019 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029-031-073>076-WVZ001>004-012-021-509>514-120745- Garrett-Tuscarawas-Carroll-Columbiana-Coshocton-Harrison- Jefferson OH-Muskingum-Guernsey-Belmont-Noble-Monroe-Mercer-Venango- Forest-Lawrence-Butler-Clarion-Jefferson PA-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- 338 AM EDT Thu Jul 11 2019 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. Scattered severe thunderstorms are possible this afternoon and evening with a crossing cold front. The primary hazard is expected to be damaging wind gusts. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Hazardous weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
123 PM EDT THU JUL 11 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0116 PM FLASH FLOOD 1 NE WESTMORELAND CITY 40.34N 79.66W
07/11/2019 WESTMORELAND PA 911 CALL CENTER
ROADWAY FLOODED AT UNDERPASS WITH VEHICLE IN
WATER.INDIVIDUALS INSIDE VEHICLE.
&&
EVENT NUMBER PBZ1902686PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
131 PM EDT THU JUL 11 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0130 PM HEAVY RAIN CRANBERRY 40.69N 80.11W
07/11/2019 M1.27 INCH BUTLER PA TRAINED SPOTTER
SINCE 9AM AND 1.06" IN 2.5 HOURS
&&
EVENT NUMBER PBZ1902687
98PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
132 PM EDT THU JUL 11 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0131 PM HEAVY RAIN ADAMSBURG 40.31N 79.65W
07/11/2019 M3.58 INCH WESTMORELAND PA TRAINED SPOTTER
SO FAR TODAY
&&
EVENT NUMBER PBZ1902688
98Special Weather Statement
National Weather Service Pittsburgh PA
133 PM EDT Thu Jul 11 2019
MDZ001-WVZ511-512-514-111800-
Garrett-Eastern Preston-Eastern Tucker-Preston-
133 PM EDT Thu Jul 11 2019
...A LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING GUSTY WIND AND
HEAVY RAIN WILL AFFECT GARRETT...EASTERN TUCKER AND SOUTHERN PRESTON
COUNTIES...
At 133 PM EDT, radar indicated strong thunderstorms were located
along a line extending from 6 miles southwest of Mount Davis to 7
miles southwest of Friendsville to near Kingwood. Movement was east
at 35 mph.
Wind gusts up to 45 mph are possible with these storms.
Locations impacted include...
Kingwood... Mountain Lake Park...
Oakland... Terra Alta...
Rowlesburg... Bittinger...
Grantsville... Loch Lynn Heights...
Friendsville... Deer Park...
Accident... Albright...
This includes Interstate 68 in Maryland between mile markers 4 and
30.
Torrential rainfall also is occurring with these storms and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.
LAT...LON 3948 7907 3947 7911 3943 7911 3941 7914
3942 7916 3939 7916 3940 7918 3936 7922
3936 7926 3930 7929 3930 7933 3925 7941
3921 7936 3921 7931 3919 7934 3924 7941
3923 7943 3939 7981 3972 7933 3972 7893
TIME...MOT...LOC 1733Z 290DEG 29KT 3972 7928 3957 7948 3943 7970PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE PITTSBURGH PA
153 PM EDT THU JUL 11 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1047 AM FLASH FLOOD 1 NNW FOX RIDGE 40.57N 80.04W
07/11/2019 ALLEGHENY PA 911 CALL CENTER
HANDICAP VAN TRAPPED IN FLOODED ROADWAY. MALE DRIVER IN
VEHICLE.
&&
CORRECTED LOCATION
EVENT NUMBER PBZ1902655
AMILLERSpecial Weather Statement
National Weather Service Pittsburgh PA
204 PM EDT Thu Jul 11 2019
MDZ001-WVZ512>514-111830-
Garrett-Eastern Preston-Eastern Tucker-Western Tucker-
204 PM EDT Thu Jul 11 2019
...A LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING GUSTY WIND AND
HEAVY RAIN WILL AFFECT CENTRAL GARRETT...NORTHEASTERN TUCKER AND
SOUTHEASTERN PRESTON COUNTIES...
At 203 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near Frostburg to 7 miles northwest of
Thomas. Movement was east at 30 mph.
Wind gusts up to 45 mph are possible with these storms.
Locations impacted include...
Mountain Lake Park... Oakland...
Davis... Thomas...
Loch Lynn Heights... Deer Park...
Elgon... Benbush...
Merrill... Lead Mine...
Redhouse... Gorman...
This includes Interstate 68 in Maryland between mile markers 24 and
30.
Torrential rainfall also is occurring with these storms and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.
LAT...LON 3921 7968 3972 7904 3972 7893 3971 7893
3943 7911 3941 7914 3942 7916 3939 7916
3936 7926 3930 7929 3930 7933 3921 7949
3919 7949 3918 7947 3921 7931 3919 7929
3909 7935 3908 7930 3905 7930
TIME...MOT...LOC 1803Z 288DEG 26KT 3972 7897 3925 7956The Pittsburgh radar (KPBZ), 106 km away, was scanning. The volume nearest the first event began at 18:06 UTC.
5 flash flood, 2 thunderstorm wind, 2 heavy rain. Local standard time, as filed.
A local fire department reported a house surrounded by water and numerous streets flooded.
A fire department reported that local streams were flooded along State Route 7.
The emergency manager reported streets closed due to flooding.
A local 911 Call Center reported flooding on Union Street.
The emergency manager reported Short Creek is running out of its banks along Short Creek Road.
A citizen on social media reported multiple downed and uprooted trees.
The local fire department reported large roadway signs damaged along with numerous trees down.
A citizen on social media reported 2.20 inches of rain.
A trained spotter reported 1.78 inches of rain.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in West Virginia in 2019Every state in 2019This day in weather historyWarnings in West Virginia, July 2019
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: 845142, 845143, 845145, 845152, 845153, 845156, 845157, 845154, 845155.