Severe Thunderstorm Warning 174, NWS Pittsburgh, PA

Area Forecast Discussion
National Weather Service Pittsburgh PA
133 PM EDT Sat Jul 6 2019

.SYNOPSIS...
Warm, humid weather can be expected again today with more showers
and storms as a weak cold front encroaches on the region.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
Generally made tweaks to the ongoing forecast, adjusting PoP timing a
bit to follow expected frontal timing. Likely/categorical PoPs still
appear appropriate. Will be issuing a Flash Flood Watch for SW PA and
much of northern WV where there are more wet areas/pockets of lower
flash flood guidance values. Heavy rainfall potential remains with
the high PWATs and deep warm cloud depths lingering. Precipitation
coverage is expected to be more widespread today with the approaching
cold front, but this might be offset at least partially by slightly
faster mid level flow/storm motion. Also cannot rule out a severe
storm or two with the better flow, but flash flooding remains the
primary concern.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH MONDAY/...
The front will make some progress through the region Sunday, but it
is questionable just how far south it will reach. Thus, had to keep
some low PoPs for the region, focused mainly southeast of Pittsburgh.
Much of the deeper moisture will have departed though, and the
flooding threat is expected to lessen. Temperature will not drop
much behind the boundary, although dewpoints may moderate a bit.

&&

.LONG TERM /MONDAY NIGHT THROUGH FRIDAY/...
Much of the region should be dry Monday and Tuesday as high pressure
noses into the region. However, low-level moist flow into the ridges
may continue to produce some showers and a few thunderstorms both
afternoons. More generalized rain chances return by Thursday as
shortwave energy arrives from the Great Lakes, with drier weather
perhaps returning by Friday.

Temperature is projected to warm above average during mid week with
shortwave ridging in advance of a Midwest trough. Frontal passage
will moderate those back toward the averages by weeks end.

&&

.AVIATION /18Z SATURDAY THROUGH THURSDAY/...
Showers and thunderstorm coverage, and associated restrictions, are
expected to increase this afternoon with the encroachment of a cold
front. Expect further deterioration tonight with boundary saturation
and frontal passage. While some guidance is indicating IFR
restrictions by sunrise, which is definitely possible and may end up
being widespread, have elected to keep all sites but HLG/ZZV at MVFR
restrictions around sunrise pending how much rainfall occurs at
individual terminals this afternoon/evening. Whatever restrictions do
develop overnight should begin to ease by late Sunday morning.

.Outlook...
Restrictions should end fm N-S Sunday with building high pres,
although showers will still be possible at all terminals except
FKL/DUJ on Sunday. Widespread restriction potential returns late Wed
with a approaching cdfnt.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...Flash Flood Watch through late tonight for MDZ001.
OH...None.
PA...Flash Flood Watch until 10 PM EDT this evening for PAZ007>009-
     013>016-020>023-029-073-074.
     Flash Flood Watch through late tonight for PAZ031-075-076.
WV...Flash Flood Watch through late tonight for WVZ012-021-509>514.

&&

Hazardous Weather Outlook
National Weather Service Pittsburgh PA
1139 AM EDT Sat Jul 6 2019

MDZ001-PAZ031-075-076-WVZ012-021-509>514-071545-
Garrett-Greene-Fayette-Fayette Ridges-Wetzel-Marion-Monongalia-
Ridges of Eastern Monongalia and Northwestern Preston-Preston-
Eastern Preston-Western Tucker-Eastern Tucker-
1139 AM EDT Sat Jul 6 2019

...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...

This Hazardous Weather Outlook is for western Maryland, southwest
Pennsylvania and northern West Virginia.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

PAZ007>009-013>016-020>023-029-073-074-071545-
Mercer-Venango-Forest-Lawrence-Butler-Clarion-Jefferson PA-Beaver-
Allegheny-Armstrong-Indiana-Washington-Westmoreland-
Westmoreland Ridges-
1139 AM EDT Sat Jul 6 2019

...FLASH FLOOD WATCH IN EFFECT UNTIL 10 PM EDT THIS EVENING...

This Hazardous Weather Outlook is for northwest Pennsylvania,
southwest Pennsylvania, west central Pennsylvania and western
Pennsylvania.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

OHZ039>041-048>050-057>059-068-069-WVZ001>004-071545-
Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson OH-
Muskingum-Guernsey-Belmont-Noble-Monroe-Hancock-Brooke-Ohio-Marshall-
1139 AM EDT Sat Jul 6 2019

This Hazardous Weather Outlook is for east central Ohio, northern
West Virginia and northern panhandle of West Virginia.

.DAY ONE...This afternoon and tonight.

Localized flash flooding is possible in thunderstorms.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

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Special Weather Statement
National Weather Service Pittsburgh PA
256 PM EDT Sat Jul 6 2019

OHZ041-PAZ013-014-020-061930-
Columbiana-Butler-Lawrence-Beaver-
256 PM EDT Sat Jul 6 2019

...A LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING SMALL HAIL
WILL AFFECT COLUMBIANA...NORTHERN BEAVER...SOUTHWESTERN LAWRENCE AND
SOUTHWESTERN BUTLER COUNTIES...

At 256 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near Ellwood City to near Minerva.
Movement was southeast at 20 mph.

Small hail is possible with these storms.

Locations impacted include...
Beaver Falls...                   Columbiana...
East Palestine...                 Ellwood City...
New Brighton...                   Calcutta...
Zelienople...                     Ohioville...
Lisbon...                         Leetonia...
Evans City...                     New Waterford...

This includes the following highways...
  Pennsylvania Turnpike between mile markers 2 and 21.
  Interstate 79 in Pennsylvania between mile markers 85 and 89.
  Interstate 376 in Pennsylvania between mile markers 31 and 35.

Campers should consider seeking sturdy shelter until these storms
pass.

LAT...LON 4078 8002 4060 8084 4062 8086 4064 8086
      4064 8089 4068 8092 4072 8092 4073 8097
      4084 8109 4092 8033
TIME...MOT...LOC 1856Z 298DEG 18KT 4088 8035 4077 8100

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
309 PM EDT SAT JUL 06 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0231 PM     TSTM WND DMG     SUNNYSIDE               40.97N  80.41W
07/06/2019                   LAWRENCE           PA   911 CALL CENTER

            TREE ONTO A HOUSE ON MT JACKSON RD

&&

EVENT NUMBER PBZ1902553

98