Flash Flood Warning 38, NWS Pittsburgh, PA

Area Forecast Discussion
National Weather Service Pittsburgh PA
832 PM EDT Fri Jun 28 2019

.SYNOPSIS...
Isolated thunderstorms are possible this evening. Better rain
chances are expected Saturday with a crossing cold front.

&&

.NEAR TERM /UNTIL 6 AM SATURDAY MORNING/...
Scattered thunderstorms have developed along the Ohio-Pennsylvania
state border and are slowly moving east-southeast, spawning severe
thunderstorm warnings and at least one flash flood warning in a
sensitive location that received lots of rain last night. Looking
upstream back towards Cleveland, additional precipitation appears as
if it will make its way in later this evening. Dry weather and above-
average temperatures will continue tonight.

&&

.SHORT TERM /6 AM SATURDAY MORNING THROUGH SUNDAY NIGHT/...
An upper shortwave trough in NW flow aloft and an associated sfc
cold front will advance to the SE across the region tomorrow.
Scattered showers and thunderstorms are expected in the warm sector,
with intensification along the front during the afternoon hours.
Sufficient instability, steep lapse rates, and dry air aloft will be
supportive of isolated severe storms with damaging wind.

The cold front should maintain isolated to scattered shower/storm
chances through early Sunday morning, primarily south of Pittsburgh.
Dry weather will return areawide with building high pressure and dry
advection in NW flow. Humidity and above-average temperatures will
continue until frontal passage.

&&

.LONG TERM /MONDAY THROUGH FRIDAY/...
Monday should remain mostly dry under ridging. However, the ridge
will slide southwards on Tuesday and remain across the Southeast US
through the end of the period, placing our area on the northern
periphery of the ridge. A series of shortwaves in northwest flow
aloft will maintain periodic shower and thunderstorm chances for much
of the week. Temperatures will remain slightly above seasonal
average through the week.

&&

.AVIATION /01Z SATURDAY THROUGH WEDNESDAY/...
Isolated thunderstorms remain possible this evening, primarily
through the BVI-PIT-AGC-LBE corridor. Also added some tempo fog
restrictions at several terminals near sunrise, specifically in the
places that had restrictions at sunrise this morning, except
restrictions would not be expected to be as intense.

Incoming shortwave will increase mid-level cloud coverage overnight,
with a sfc cold front aiding storm initiation by Sat afternoon. Best
chances for terminal impacts likely after TAF period.

.Outlook...
Shower/tstm restrictions are possible Sat aftn/eve through Sun
morning with a crossing cold front. Another disturbance returns
shower/tstm restriction potential Tue.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...None.
OH...None.
PA...None.
WV...None.

&&

Hazardous Weather Outlook...CORRECTED
National Weather Service Pittsburgh PA
455 AM EDT Fri Jun 28 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>514-290745-
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-
455 AM EDT Fri Jun 28 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.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Isolated severe thunderstorms are possible with a crossing cold front
Saturday afternoon and evening.

.SPOTTER INFORMATION STATEMENT...

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

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PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
802 PM EDT FRI JUN 28 2019

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

0757 PM     FLASH FLOOD      PARKSTOWN               41.02N  80.41W
06/28/2019                   LAWRENCE           PA   911 CALL CENTER

            FLOODING AT RT 224 AND OLD YOUNGSTOWN RD

&&

EVENT NUMBER PBZ1902436

TGREEN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
809 PM EDT FRI JUN 28 2019

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

0804 PM     FLASH FLOOD      1 SE PEANUT             41.00N  80.46W
06/28/2019                   LAWRENCE           PA   FIRE DEPT/RESCUE

            REPORT OF SIGNIFICANT FLOODING

&&

EVENT NUMBER PBZ1902437

TGREEN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
841 PM EDT FRI JUN 28 2019

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

0835 PM     TSTM WND DMG     DARRAGH                 40.27N  79.68W
06/28/2019                   WESTMORELAND       PA   911 CALL CENTER

            POWER LINES DOWN AT RT 136 AND WOOSTER ST

&&

EVENT NUMBER PBZ1902438

TGREEN

Special Weather Statement
National Weather Service Pittsburgh PA
841 PM EDT Fri Jun 28 2019

PAZ021-290115-
Allegheny-
841 PM EDT Fri Jun 28 2019

...A STRONG THUNDERSTORM CAPABLE OF PRODUCING GUSTY WIND WILL AFFECT
EAST CENTRAL ALLEGHENY COUNTY...

At 841 PM EDT, a strong thunderstorm was located over Homestead, or
near Pittsburgh, moving east at 10 mph.

Wind gusts up to 45 mph are possible with this storm.

Locations impacted include...
Pittsburgh...                     Penn Hills...
Monroeville...                    West Mifflin...
Wilkinsburg...                    Munhall...
North Versailles...               Swissvale...
Forest Hills...                   Wilkins Township...
Duquesne...                       Turtle Creek...

LAT...LON 4039 7994 4044 7993 4045 7978 4037 7979
TIME...MOT...LOC 0041Z 270DEG 8KT 4042 7991

Special Weather Statement
National Weather Service Pittsburgh PA
849 PM EDT Fri Jun 28 2019

PAZ021-290115-
Allegheny-
849 PM EDT Fri Jun 28 2019

...A THUNDERSTORM CAPABLE OF PRODUCING GUSTY WIND AND HEAVY RAIN
WILL AFFECT SOUTHEASTERN ALLEGHENY COUNTY...

At 849 PM EDT, a strong thunderstorm was located over Liberty, or
over McKeesport, moving east at 10 mph.

Wind gusts up to 50 mph are possible with this storm.

Locations impacted include...
McKeesport...                     West Mifflin...
North Versailles...               White Oak...
Duquesne...                       Glassport...
Liberty...                        Port Vue...
Dravosburg...                     Versailles...
Lincoln...

Torrential rainfall also is occurring with this storm and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 4030 7979 4029 7978 4028 7978 4028 7980
      4027 7979 4032 7989 4038 7987 4037 7977
TIME...MOT...LOC 0049Z 279DEG 9KT 4034 7984