Alert archive / Pennsylvania / River Flood Watches in 2021

River Flood Watch 9, NWS Pittsburgh, PA

August 30, 2021Allegheny County, Washington County, Pennsylvania

NWS Pittsburgh, PA issued this river flood watch at Aug 30, 2021, 11:19 AM EDT for Allegheny County, Washington County, Pennsylvania. It took effect at Sep 1, 2021, 10:33 PM EDT. It was in force for 37 hr.

The area

The outline as issued.

The facts

Issued
Aug 30, 2021, 11:19 AM EDT (15:19 UTC)
In effect from
Sep 1, 2021, 10:33 PM EDT
Expired
Sep 3, 2021, 11:36 AM EDT
In force
37 hr
Issued by
NWS Pittsburgh, PA
Area
Storm-based polygon
Flood severity
None

Counties Allegheny County, PA, Washington County, PA

The radar

The Pittsburgh radar (KPBZ), 39 km from the middle of the area, began a volume at 15:21 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The river

Written for the forecast point Monongahela River at Elizabeth Lock and Dam (ELZP1). The gauge peaked at 16.37 ft at Sep 2, 2021, 4:00 AM EDT.

actionminormoderate10152008/3008/3109/0109/0209/0309/04
Action stage
16.5 ft
Minor stage
20 ft
Moderate stage
23 ft
Major stage
26 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 03075070, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

The text

As transmitted.

738 
WGUS61 KPBZ 301519
FFAPBZ

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Pittsburgh PA
1119 AM EDT Mon Aug 30 2021

...The National Weather Service in Pittsburgh PA has issued a Flood 
Watch for the following rivers in Pennsylvania...

  Monongahela River Near Charleroi affecting Washington, 
  Westmoreland and Fayette Counties.

  Monongahela River At Grays Landing affecting Greene and Fayette 
  Counties.

  Monongahela River Near Elizabeth affecting Allegheny and 
  Washington Counties.

  Monongahela River At Point Marion affecting Greene and Fayette 
  Counties.

  Monongahela River At Braddock affecting Allegheny County.

  Conemaugh River At Seward affecting Indiana and Higher Elevations 
  of Westmoreland zones.

  Youghiogheny River At Connellsville affecting Fayette County.

.Heavy rainfall associated with the passage of the remnants of 
Hurricane Ida could cause these locations to rise above flood stage.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you are in the watch area, remain alert to possible flooding.

Residents and those with interests near the river should monitor 
rising water levels and be prepared for possible flood warnings.

Additional information is available at weather.gov/pbz.


PAZ029-073-075-310330-
/O.NEW.KPBZ.FL.A.0006.210901T2350Z-210903T1022Z/
/CHRP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1119 AM EDT Mon Aug 30 2021

The National Weather Service in Pittsburgh has issued a

* Flood Watch for
  the Monongahela River Near Charleroi.
* From Wednesday evening to Friday morning.
* At 10:00 AM EDT Monday the stage was 10.5 feet.
* Flood stage is 28.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached Wednesday evening.
* Impact...At 30.0 feet, Backwater flooding along Pigeon Creek in 
  Monongahela, begins to flood the lowest building in Penos Plaza, 
  Armstrong Park, and closes Wall Street Bridge across Pigeon Creek.
* Impact...At 31.6 feet, Lock walls overtopped.
* Impact...At 32.0 feet, Flooding occurs on Connellsville, Fourth, 
  Cook, and Main Streets in Fayette City
* Impact...At 33.0 feet, Flooding is widespread in Fayette City.


&&

LAT...LON 4011 7990 4016 7993 4019 7987 4016 7984
      4015 7987 4014 7987

$$

PAZ031-075-310330-
/O.NEW.KPBZ.FL.A.0007.210902T0112Z-210902T2000Z/
/GYLP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1119 AM EDT Mon Aug 30 2021

The National Weather Service in Pittsburgh has issued a

* Flood Watch for
  the Monongahela River At Grays Landing.
* From Wednesday evening to Thursday afternoon.
* At 10:45 AM EDT Monday the stage was 9.7 feet.
* Flood stage is 21.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late Wednesday evening.
* Impact...At 19.0 feet, The bike trail floods in Greensboro near 
  County Street.
* Impact...At 21.0 feet, The lock at Grays Landing Lock and Dam goes 
  out of service, and navigation is suspended.


&&

LAT...LON 3979 7992 3986 7995 3986 7991 3979 7989

$$

PAZ023-074-310330-
/O.NEW.KPBZ.FL.A.0008.210902T0214Z-210903T0156Z/
/SWDP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1119 AM EDT Mon Aug 30 2021

The National Weather Service in Pittsburgh has issued a

* Flood Watch for
  the Conemaugh River At Seward.
* From Wednesday evening to late Thursday evening.
* At 10:45 AM EDT Monday the stage was 3.4 feet.
* Flood stage is 12.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late Wednesday evening.
* Impact...At 9.9 feet, Water reaches the level reached on March 5, 
  2015.
* Impact...At 12.0 feet, Route 56 below Power Plant Road is flooded. 
* Impact...At 12.1 feet, Water reaches the level reached during 
  Hurricane Ivan September 18, 2004.


&&

LAT...LON 4040 7896 4040 7905 4043 7904 4044 7898

$$

PAZ021-029-310330-
/O.NEW.KPBZ.FL.A.0009.210902T0526Z-210903T1536Z/
/ELZP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1119 AM EDT Mon Aug 30 2021

The National Weather Service in Pittsburgh has issued a

* Flood Watch for
  the Monongahela River Near Elizabeth.
* From late Wednesday night to late Friday morning.
* At 10:15 AM EDT Monday the stage was 10.2 feet.
* Flood stage is 20.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached early Thursday morning.
* Impact...At 22.0 feet, In West Elizabeth basements of numerous 
  homes in the block bounded by First and Water streets begin to 
  flood.
* Impact...At 23.0 feet, Industrial Chemical Corporation plant 
  floods.


&&

LAT...LON 4026 7994 4032 7988 4029 7984 4025 7990

$$

PAZ075-310330-
/O.NEW.KPBZ.FL.A.0010.210902T0600Z-210903T0600Z/
/CLLP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1119 AM EDT Mon Aug 30 2021

The National Weather Service in Pittsburgh has issued a

* Flood Watch for
  the Youghiogheny River At Connellsville.
* From late Wednesday night to early Friday morning.
* At 10:15 AM EDT Monday the stage was 2.5 feet.
* Flood stage is 12.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached early Thursday morning.
* Impact...At 12.0 feet, Flooding begins in the vicinity of Yough 
  Park.
* Impact...At 14.0 feet, Several inches of water floods basements of 
  about 30 homes along left bank. River is bankfull along the left 
  bank just downstream from the Crawford Street Bridge. Water 
  reaches the level of the Hurricane Ivan flood of September 18, 
  2004.
* Impact...At 14.1 feet, Water reaches level of March 3, 2015.


&&

LAT...LON 3998 7961 4005 7963 4005 7959 3999 7957

$$

PAZ031-075-310330-
/O.NEW.KPBZ.FL.A.0011.210902T0720Z-210902T2100Z/
/PMRP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.UU/
1119 AM EDT Mon Aug 30 2021

The National Weather Service in Pittsburgh has issued a

* Flood Watch for
  the Monongahela River At Point Marion.
* From late Wednesday night to Thursday afternoon.
* At 10:15 AM EDT Monday the stage was 9.7 feet.
* Flood stage is 26.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached early Thursday morning.
* Impact...At 26.0 feet, Basement flooding begins in some homes and 
  businesses in Point Marion.


&&

LAT...LON 3979 7990 3977 7992 3972 7988 3972 7992
      3978 7995

$$

PAZ021-310330-
/O.NEW.KPBZ.FL.A.0012.210902T1348Z-210903T1036Z/
/BDDP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1119 AM EDT Mon Aug 30 2021

The National Weather Service in Pittsburgh has issued a

* Flood Watch for
  the Monongahela River At Braddock.
* From Thursday morning to Friday morning.
* At 10:45 AM EDT Monday the stage was 12.2 feet.
* Flood stage is 22.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late Thursday morning.
* Impact...At 19.0 feet, Navigation suspended, lock out of service.
* Impact...At 20.8 feet, Lock walls overtopped.
* Impact...At 22.0 feet, Sewers begin to back up along 12th, 13th 
  and Buena Vista streets in McKeesport prompting evacuations to 
  begin. In Boston, backwater flooding on the Youghiogheny River 
  will begin to flood the restaurant on Saint David Street.
* Impact...At 23.0 feet, Backwater flooding along the Youghiogheny 
  river in McKeesport will flood the lower parking lot and dock area 
  of the McKees Point boat complex. Backwater flooding further 
  upstream on the Youghiogheny River will flood the lower parking 
  lot of the community park near the Boston bridge in Boston.


&&

LAT...LON 4035 7990 4038 7987 4040 7990 4043 7988
      4036 7980 4034 7987

$$
5 follow-up statements
711 
WGUS61 KPBZ 310245
FFAPBZ

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Pittsburgh PA
1045 PM EDT Mon Aug 30 2021

...The Flood Watch continues for the following rivers in 
Pennsylvania...

  Monongahela River Near Charleroi affecting Washington, 
  Westmoreland and Fayette Counties.

  Monongahela River At Braddock affecting Allegheny County.

  Conemaugh River At Seward affecting Indiana and Higher Elevations 
  of Westmoreland zones.

  Youghiogheny River At Connellsville affecting Fayette County.

  Monongahela River At Grays Landing affecting Greene and Fayette 
  Counties.

  Monongahela River Near Elizabeth affecting Allegheny and 
  Washington Counties.

  Monongahela River At Point Marion affecting Greene and Fayette 
  Counties.

.Heavy rainfall associated with the passage of the remnants of 
Hurricane Ida could cause these locations to rise above flood stage.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you are in the watch area, remain alert to possible flooding.

Residents and those with interests near the river should monitor 
rising water levels and be prepared for possible flood warnings.

Additional information is available at weather.gov/pbz.


PAZ029-073-075-311600-
/O.EXT.KPBZ.FL.A.0006.210901T2350Z-210903T1021Z/
/CHRP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1045 PM EDT Mon Aug 30 2021

The Flood Watch continues for
  the Monongahela River Near Charleroi.

* From Wednesday evening to Friday morning.
* At 9:00 PM EDT Monday the stage was 10.2 feet.
* Flood stage is 28.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached Wednesday evening.
* Impact...At 26.0 feet, Route 201 in closed due to flooding along 
  Donner's Run.
* Impact...At 26.3 feet, Water reaches the level reached during 
  Hurricane Ivan September 18, 2004.
* Impact...At 28.0 feet, In Monongahela, backwater flooding along 
  Pigeon Creek begins from the intersection of Park Way and Park 
  Avenue.
* Impact...At 29.0 feet, Navigation suspended, lock out of service.
* Impact...At 30.0 feet, Backwater flooding along Pigeon Creek in 
  Monongahela, begins to flood the lowest building in Penos Plaza, 
  Armstrong Park, and closes Wall Street Bridge across Pigeon Creek.
* Impact...At 31.6 feet, Lock walls overtopped.
* Impact...At 32.0 feet, Flooding occurs on Connellsville, Fourth, 
  Cook, and Main Streets in Fayette City
* Impact...At 33.0 feet, Flooding is widespread in Fayette City.


&&

LAT...LON 4011 7990 4016 7993 4019 7987 4016 7984
      4015 7987 4014 7987

$$

PAZ023-074-311600-
/O.EXT.KPBZ.FL.A.0008.210902T0214Z-210903T0155Z/
/SWDP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1045 PM EDT Mon Aug 30 2021

The Flood Watch continues for
  the Conemaugh River At Seward.

* From Wednesday evening to late Thursday evening.
* At 9:45 PM EDT Monday the stage was 3.0 feet.
* Flood stage is 12.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late Wednesday evening.
* Impact...At 9.9 feet, Water reaches the level reached on March 5, 
  2015.
* Impact...At 12.0 feet, Route 56 below Power Plant Road is flooded. 
* Impact...At 12.1 feet, Water reaches the level reached during 
  Hurricane Ivan September 18, 2004.


&&

LAT...LON 4040 7896 4040 7905 4043 7904 4044 7898

$$

PAZ075-311600-
/O.EXT.KPBZ.FL.A.0010.210902T0549Z-210903T0424Z/
/CLLP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1045 PM EDT Mon Aug 30 2021

The Flood Watch continues for
  the Youghiogheny River At Connellsville.

* From late Wednesday night to early Friday morning.
* At 10:15 PM EDT Monday the stage was 2.5 feet.
* Flood stage is 12.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached early Thursday morning.
* Impact...At 12.0 feet, Flooding begins in the vicinity of Yough 
  Park.
* Impact...At 14.0 feet, Several inches of water floods basements of 
  about 30 homes along left bank. River is bankful along the left 
  bank just downstream from the Crawford Street Bridge. Water 
  reaches the level of the Hurricane Ivan flood of September 18, 
  2004.


&&

LAT...LON 3998 7961 4005 7963 4005 7959 3999 7957

$$

PAZ021-311600-
/O.EXT.KPBZ.FL.A.0012.210902T1348Z-210903T1035Z/
/BDDP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1045 PM EDT Mon Aug 30 2021

The Flood Watch continues for
  the Monongahela River At Braddock.

* From Thursday morning to Friday morning.
* At 9:45 PM EDT Monday the stage was 12.5 feet.
* Flood stage is 22.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late Thursday morning.
* Impact...At 19.0 feet, Navigation suspended, lock out of service.
* Impact...At 20.8 feet, Lock walls overtopped.
* Impact...At 22.0 feet, Sewers begin to back up along 12th, 13th 
  and Buena Vista streets in McKeesport prompting evacuations to 
  begin. In Boston, backwater flooding on the Youghiogheny River 
  will begin to flood the restaurant on Saint David Street.
* Impact...At 23.0 feet, Backwater flooding along the Youghiogheny 
  river in McKeesport will flood the lower parking lot and dock area 
  of the McKees Point boat complex. Backwater flooding further 
  upstream on the Youghiogheny River will flood the lower parking 
  lot of the community park near the Boston bridge in Boston.


&&

LAT...LON 4035 7990 4038 7987 4040 7990 4043 7988
      4036 7980 4034 7987

$$

PAZ031-075-311600-
/O.CON.KPBZ.FL.A.0007.210902T0112Z-210902T2000Z/
/GYLP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1045 PM EDT Mon Aug 30 2021

The Flood Watch continues for
  the Monongahela River At Grays Landing.

* From Wednesday evening to Thursday afternoon.
* At 9:45 PM EDT Monday the stage was 10.3 feet.
* Flood stage is 21.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late Wednesday evening.
* Impact...At 19.0 feet, The bike trail floods in Greensboro near 
  County Street.
* Impact...At 21.0 feet, The lock at Grays Landing Lock and Dam goes 
  out of service, and navigation is suspended.


&&

LAT...LON 3979 7992 3986 7995 3986 7991 3979 7989

$$

PAZ021-029-311600-
/O.CON.KPBZ.FL.A.0009.210902T0526Z-210903T1536Z/
/ELZP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1045 PM EDT Mon Aug 30 2021

The Flood Watch continues for
  the Monongahela River Near Elizabeth.

* From late Wednesday night to late Friday morning.
* At 10:15 PM EDT Monday the stage was 10.1 feet.
* Flood stage is 20.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached early Thursday morning.
* Impact...At 17.5 feet, Navigation suspended, lock out of service.
* Impact...At 18.1 feet, Lock walls overtopped.
* Impact...At 20.0 feet, Small communities around Lock 3 area begin 
  minor flooding.
* Impact...At 22.0 feet, In West Elizabeth basements of numerous 
  homes in the block bounded by First and Water streets begin to 
  flood.
* Impact...At 23.0 feet, Industrial Chemical Corporation plant 
  floods.


&&

LAT...LON 4026 7994 4032 7988 4029 7984 4025 7990

$$

PAZ031-075-311600-
/O.CON.KPBZ.FL.A.0011.210902T0720Z-210902T2100Z/
/PMRP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.UU/
1045 PM EDT Mon Aug 30 2021

The Flood Watch continues for
  the Monongahela River At Point Marion.

* From late Wednesday night to Thursday afternoon.
* At 10:15 PM EDT Monday the stage was 10.4 feet.
* Flood stage is 26.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached early Thursday morning.
* Impact...At 26.0 feet, Basement flooding begins in some homes and 
  businesses in Point Marion.


&&

LAT...LON 3979 7990 3977 7992 3972 7988 3972 7992
      3978 7995

$$
657 
WGUS61 KPBZ 311550
FFAPBZ

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Pittsburgh PA
1150 AM EDT Tue Aug 31 2021

...Forecast flooding changed from Moderate to Major severity and 
increased in duration for the following rivers in Pennsylvania...

  Monongahela River Near Charleroi affecting Washington, 
  Westmoreland and Fayette Counties.

  Monongahela River At Grays Landing affecting Greene and Fayette 
  Counties.

  Monongahela River At Point Marion affecting Greene and Fayette 
  Counties.

  Monongahela River Near Elizabeth affecting Allegheny and 
  Washington Counties.

  Monongahela River At Braddock affecting Allegheny County.

  Conemaugh River At Seward affecting Indiana and Higher Elevations 
  of Westmoreland zones.

  Youghiogheny River At Connellsville affecting Fayette County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you are in the watch area, remain alert to possible flooding.

Residents and those with interests near the river should monitor 
rising water levels and be prepared for possible flood warnings.

Additional information is available at weather.gov/pbz.


PAZ029-073-075-010000-
/O.EXT.KPBZ.FL.A.0006.210901T2124Z-210903T0754Z/
/CHRP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1150 AM EDT Tue Aug 31 2021

The Flood Watch continues for
  the Monongahela River Near Charleroi.

* From Wednesday afternoon to early Friday morning.
* At 11:00 AM EDT Tuesday the stage was 10.9 feet.
* Flood stage is 28.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached tomorrow afternoon.


&&

LAT...LON 4011 7990 4016 7993 4019 7987 4016 7984
      4015 7987 4014 7987

$$

PAZ031-075-010000-
/O.EXT.KPBZ.FL.A.0007.210901T2126Z-210902T2242Z/
/GYLP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1150 AM EDT Tue Aug 31 2021

The Flood Watch continues for
  the Monongahela River At Grays Landing.

* From Wednesday afternoon to Thursday evening.
* At 10:45 AM EDT Tuesday the stage was 10.1 feet.
* Flood stage is 21.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached tomorrow afternoon.
* Impact...At 19.0 feet, The bike trail floods in Greensboro near 
  County Street.
* Impact...At 21.0 feet, The lock at Grays Landing Lock and Dam goes 
  out of service, and navigation is suspended.
* Impact...At 24.0 feet, The lock walls are overtopped at Grays 
  Landing Lock and Dam.
* Impact...At 25.0 feet, Flood waters reach Martin Ferry Road in the 
  village of Glasworks.


&&

LAT...LON 3979 7992 3986 7995 3986 7991 3979 7989

$$

PAZ031-075-010000-
/O.EXT.KPBZ.FL.A.0011.210901T2233Z-210902T2235Z/
/PMRP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.UU/
1150 AM EDT Tue Aug 31 2021

The Flood Watch continues for
  the Monongahela River At Point Marion.

* From Wednesday evening to Thursday evening.
* At 11:15 AM EDT Tuesday the stage was 10.2 feet.
* Flood stage is 26.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached tomorrow evening.


&&

LAT...LON 3979 7990 3977 7992 3972 7988 3972 7992
      3978 7995

$$

PAZ075-010000-
/O.EXT.KPBZ.FL.A.0010.210902T0024Z-210903T0945Z/
/CLLP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1150 AM EDT Tue Aug 31 2021

The Flood Watch continues for
  the Youghiogheny River At Connellsville.

* From Wednesday evening to early Friday morning.
* At 11:15 AM EDT Tuesday the stage was 2.6 feet.
* Flood stage is 12.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached tomorrow evening.
* Impact...At 12.0 feet, Flooding begins in the vicinity of Yough 
  Park.
* Impact...At 14.0 feet, Several inches of water floods basements of 
  about 30 homes along left bank. River is bankful along the left 
  bank just downstream from the Crawford Street Bridge. Water 
  reaches the level of the Hurricane Ivan flood of September 18, 
  2004.
* Impact...At 14.1 feet, Water reaches level of March 3, 2015.
* Impact...At 16.0 feet, About 100 homes on the west side of 
  Connellsville flood in the areas of Fifth, Sixth and Seventh 
  Streets.
* Impact...At 17.0 feet, Water reaches homes in the towns Adelaide 
  and Dawson, downstream of Connelsville.


&&

LAT...LON 3998 7961 4005 7963 4005 7959 3999 7957

$$

PAZ023-074-010000-
/O.EXT.KPBZ.FL.A.0008.210902T0224Z-210903T0205Z/
/SWDP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1150 AM EDT Tue Aug 31 2021

The Flood Watch continues for
  the Conemaugh River At Seward.

* From Wednesday evening to late Thursday evening.
* At 10:45 AM EDT Tuesday the stage was 2.7 feet.
* Flood stage is 12.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late tomorrow evening.
* Impact...At 9.9 feet, Water reaches the level reached on March 5, 
  2015.
* Impact...At 12.0 feet, Route 56 below Power Plant Road is flooded. 
* Impact...At 12.1 feet, Water reaches the level reached during 
  Hurricane Ivan September 18, 2004.


&&

LAT...LON 4040 7896 4040 7905 4043 7904 4044 7898

$$

PAZ021-029-010000-
/O.EXT.KPBZ.FL.A.0009.210902T0233Z-210903T1453Z/
/ELZP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1150 AM EDT Tue Aug 31 2021

The Flood Watch continues for
  the Monongahela River Near Elizabeth.

* From Wednesday evening to late Friday morning.
* At 11:15 AM EDT Tuesday the stage was 10.7 feet.
* Flood stage is 20.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late tomorrow evening.


&&

LAT...LON 4026 7994 4032 7988 4029 7984 4025 7990

$$

PAZ021-010000-
/O.EXT.KPBZ.FL.A.0012.210902T0840Z-210903T1400Z/
/BDDP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1150 AM EDT Tue Aug 31 2021

The Flood Watch continues for
  the Monongahela River At Braddock.

* From late Wednesday night to late Friday morning.
* At 10:45 AM EDT Tuesday the stage was 12.5 feet.
* Flood stage is 22.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached early Thursday morning.


&&

LAT...LON 4035 7990 4038 7987 4040 7990 4043 7988
      4036 7980 4034 7987

$$
945 
WGUS61 KPBZ 312341
FFAPBZ

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Pittsburgh PA
741 PM EDT Tue Aug 31 2021

...The Flood Watch continues for the following rivers in 
Pennsylvania...

  Monongahela River At Maxwell affecting Washington and Fayette 
  Counties.

  Youghiogheny River At Sutersville affecting Allegheny and 
  Westmoreland Counties.

  Monongahela River Near Charleroi affecting Washington, 
  Westmoreland and Fayette Counties.

  Monongahela River At Grays Landing affecting Greene and Fayette 
  Counties.

  Monongahela River At Point Marion affecting Greene and Fayette 
  Counties.

  Monongahela River Near Elizabeth affecting Allegheny and 
  Washington Counties.

  Monongahela River At Braddock affecting Allegheny County.

  Conemaugh River At Seward affecting Indiana and Higher Elevations 
  of Westmoreland zones.

  Youghiogheny River At Connellsville affecting Fayette County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you are in the watch area, remain alert to possible flooding.

Residents and those with interests near the river should monitor 
rising water levels and be prepared for possible flood warnings.

Additional information is available at weather.gov/pbz.


PAZ029-075-010745-
/O.EXT.KPBZ.FL.A.0013.210902T0221Z-210903T0057Z/
/MAXP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
741 PM EDT Tue Aug 31 2021

The Flood Watch continues for
  the Monongahela River At Maxwell.

* From Wednesday evening to Thursday evening.
* At 6:30 PM EDT Tuesday the stage was 9.7 feet.
* Flood stage is 32.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late tomorrow evening.


&&

LAT...LON 4000 8002 4003 7998 4002 7989 3999 7993
      3998 7998

$$

PAZ021-073-010745-
/O.EXT.KPBZ.FL.A.0014.210902T0727Z-210903T0707Z/
/STSP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
741 PM EDT Tue Aug 31 2021

The Flood Watch continues for
  the Youghiogheny River At Sutersville.

* From late Wednesday night to early Friday morning.
* At 7:15 PM EDT Tuesday the stage was 4.3 feet.
* Flood stage is 20.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached early Thursday morning.
* Impact...At 20.0 feet, Residential basement flooding in 
  Sutersville begins in homes along the right bank. Flooding also 
  begins in the West Newton business district 5 miles upstream.
* Impact...At 20.7 feet, Flood reaches the level reached on March 5, 
  2015.
* Impact...At 20.7 feet, Water reaches the level reached during 
  Hurricane Ivan September 18, 2004.
* Impact...At 23.0 feet, Floodwaters reach the railroad tracks on 
  the left bank.


&&

LAT...LON 4021 7980 4026 7984 4027 7976 4023 7974

$$

PAZ029-073-075-010745-
/O.CON.KPBZ.FL.A.0006.210901T2124Z-210903T0754Z/
/CHRP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
741 PM EDT Tue Aug 31 2021

The Flood Watch continues for
  the Monongahela River Near Charleroi.

* From Wednesday afternoon to early Friday morning.
* At 6:00 PM EDT Tuesday the stage was 11.3 feet.
* Flood stage is 28.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached tomorrow afternoon.


&&

LAT...LON 4011 7990 4016 7993 4019 7987 4016 7984
      4015 7987 4014 7987

$$

PAZ031-075-010745-
/O.CON.KPBZ.FL.A.0007.210901T2126Z-210902T2242Z/
/GYLP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
741 PM EDT Tue Aug 31 2021

The Flood Watch continues for
  the Monongahela River At Grays Landing.

* From Wednesday afternoon to Thursday evening.
* At 6:45 PM EDT Tuesday the stage was 10.1 feet.
* Flood stage is 21.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached tomorrow afternoon.
* Impact...At 19.0 feet, The bike trail floods in Greensboro near 
  County Street.
* Impact...At 21.0 feet, The lock at Grays Landing Lock and Dam goes 
  out of service, and navigation is suspended.
* Impact...At 24.0 feet, The lock walls are overtopped at Grays 
  Landing Lock and Dam.
* Impact...At 25.0 feet, Flood waters reach Martin Ferry Road in the 
  village of Glasworks.


&&

LAT...LON 3979 7992 3986 7995 3986 7991 3979 7989

$$

PAZ031-075-010745-
/O.CON.KPBZ.FL.A.0011.210901T2233Z-210902T2235Z/
/PMRP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.UU/
741 PM EDT Tue Aug 31 2021

The Flood Watch continues for
  the Monongahela River At Point Marion.

* From Wednesday evening to Thursday evening.
* At 7:15 PM EDT Tuesday the stage was 10.2 feet.
* Flood stage is 26.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached tomorrow evening.


&&

LAT...LON 3979 7990 3977 7992 3972 7988 3972 7992
      3978 7995

$$

PAZ075-010745-
/O.CON.KPBZ.FL.A.0010.210902T0024Z-210903T0945Z/
/CLLP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
741 PM EDT Tue Aug 31 2021

The Flood Watch continues for
  the Youghiogheny River At Connellsville.

* From Wednesday evening to early Friday morning.
* At 7:15 PM EDT Tuesday the stage was 2.8 feet.
* Flood stage is 12.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached tomorrow evening.
* Impact...At 12.0 feet, Flooding begins in the vicinity of Yough 
  Park.
* Impact...At 14.0 feet, Several inches of water floods basements of 
  about 30 homes along left bank. River is bankful along the left 
  bank just downstream from the Crawford Street Bridge. Water 
  reaches the level of the Hurricane Ivan flood of September 18, 
  2004.
* Impact...At 14.1 feet, Water reaches level of March 3, 2015.
* Impact...At 16.0 feet, About 100 homes on the west side of 
  Connellsville flood in the areas of Fifth, Sixth and Seventh 
  Streets.
* Impact...At 17.0 feet, Water reaches homes in the towns Adelaide 
  and Dawson, downstream of Connelsville.


&&

LAT...LON 3998 7961 4005 7963 4005 7959 3999 7957

$$

PAZ023-074-010745-
/O.CON.KPBZ.FL.A.0008.210902T0224Z-210903T0205Z/
/SWDP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
741 PM EDT Tue Aug 31 2021

The Flood Watch continues for
  the Conemaugh River At Seward.

* From Wednesday evening to late Thursday evening.
* At 6:45 PM EDT Tuesday the stage was 3.4 feet.
* Flood stage is 12.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late tomorrow evening.
* Impact...At 9.9 feet, Water reaches the level reached on March 5, 
  2015.
* Impact...At 12.0 feet, Route 56 below Power Plant Road is flooded. 
* Impact...At 12.1 feet, Water reaches the level reached during 
  Hurricane Ivan September 18, 2004.


&&

LAT...LON 4040 7896 4040 7905 4043 7904 4044 7898

$$

PAZ021-029-010745-
/O.CON.KPBZ.FL.A.0009.210902T0233Z-210903T1453Z/
/ELZP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
741 PM EDT Tue Aug 31 2021

The Flood Watch continues for
  the Monongahela River Near Elizabeth.

* From Wednesday evening to late Friday morning.
* At 7:15 PM EDT Tuesday the stage was 11.3 feet.
* Flood stage is 20.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late tomorrow evening.


&&

LAT...LON 4026 7994 4032 7988 4029 7984 4025 7990

$$

PAZ021-010745-
/O.CON.KPBZ.FL.A.0012.210902T0840Z-210903T1400Z/
/BDDP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
741 PM EDT Tue Aug 31 2021

The Flood Watch continues for
  the Monongahela River At Braddock.

* From late Wednesday night to late Friday morning.
* At 6:45 PM EDT Tuesday the stage was 12.4 feet.
* Flood stage is 22.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached early Thursday morning.


&&

LAT...LON 4035 7990 4038 7987 4040 7990 4043 7988
      4036 7980 4034 7987

$$
526 
WGUS61 KPBZ 010659
FFAPBZ

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Pittsburgh PA
259 AM EDT Wed Sep 1 2021

...The Flood Watch is extended for the following rivers in 
Pennsylvania...

  Youghiogheny River At Sutersville affecting Allegheny and 
  Westmoreland Counties.

...The Flood Watch continues for the following rivers in 
Pennsylvania...

  Conemaugh River At Seward affecting Indiana and Higher Elevations 
  of Westmoreland zones.

  Monongahela River Near Charleroi affecting Washington, 
  Westmoreland and Fayette Counties.

  Monongahela River At Grays Landing affecting Greene and Fayette 
  Counties.

  Monongahela River At Point Marion affecting Greene and Fayette 
  Counties.

  Monongahela River At Maxwell affecting Washington and Fayette 
  Counties.

  Monongahela River Near Elizabeth affecting Allegheny and 
  Washington Counties.

  Monongahela River At Braddock affecting Allegheny County.

  Youghiogheny River At Connellsville affecting Fayette County.

.Heavy rainfall associated with the passage of the remnants of 
tropical system Ida could cause these locations to rise above flood 
stage.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you are in the watch area, remain alert to possible flooding.

Residents and those with interests near the river should monitor 
rising water levels and be prepared for possible flood warnings.

Additional information is available at weather.gov/pbz.


PAZ023-074-011630-
/O.EXT.KPBZ.FL.A.0008.210901T1743Z-210902T1912Z/
/SWDP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
259 AM EDT Wed Sep 1 2021

The Flood Watch continues for
  the Conemaugh River At Seward.

* From this afternoon to tomorrow afternoon.
* At 11:45 PM EDT Tuesday the stage was 3.9 feet.
* Flood stage is 12.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached this afternoon.
* Impact...At 9.9 feet, Water reaches the level reached on March 5, 
  2015.
* Impact...At 12.0 feet, Route 56 below Power Plant Road is flooded. 
* Impact...At 12.1 feet, Water reaches the level reached during 
  Hurricane Ivan September 18, 2004.


&&

LAT...LON 4040 7896 4040 7905 4043 7904 4044 7898

$$

PAZ021-073-011630-
/O.EXT.KPBZ.FL.A.0014.210902T0520Z-210903T0707Z/
/STSP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
259 AM EDT Wed Sep 1 2021

The Flood Watch continues for
  the Youghiogheny River At Sutersville.

* From late tonight to early Friday morning.
* At 12:15 AM EDT Wednesday the stage was 5.2 feet.
* Flood stage is 20.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached just after midnight tonight.
* Impact...At 20.0 feet, Residential basement flooding in 
  Sutersville begins in homes along the right bank. Flooding also 
  begins in the West Newton business district 5 miles upstream.
* Impact...At 20.7 feet, Flood reaches the level reached on March 5, 
  2015.
* Impact...At 20.7 feet, Water reaches the level reached during 
  Hurricane Ivan September 18, 2004.
* Impact...At 23.0 feet, Floodwaters reach the railroad tracks on 
  the left bank.


&&

LAT...LON 4021 7980 4026 7984 4027 7976 4023 7974

$$

PAZ029-073-075-011630-
/O.CON.KPBZ.FL.A.0006.210901T2124Z-210903T0754Z/
/CHRP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
259 AM EDT Wed Sep 1 2021

The Flood Watch continues for
  the Monongahela River Near Charleroi.

* From this afternoon to early Friday morning.
* At 2:00 AM EDT Wednesday the stage was 11.1 feet.
* Flood stage is 28.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late this afternoon.
* Impact...At 26.0 feet, Route 201 in closed due to flooding along 
  Donner's Run.
* Impact...At 26.3 feet, Water reaches the level reached during 
  Hurricane Ivan September 18, 2004.
* Impact...At 28.0 feet, In Monongahela, backwater flooding along 
  Pigeon Creek begins from the intersection of Park Way and Park 
  Avenue.
* Impact...At 29.0 feet, Navigation suspended, lock out of service.
* Impact...At 30.0 feet, Backwater flooding along Pigeon Creek in 
  Monongahela, begins to flood the lowest building in Penos Plaza, 
  Armstrong Park, and closes Wall Street Bridge across Pigeon Creek.
* Impact...At 31.6 feet, Lock walls overtopped.
* Impact...At 32.0 feet, Flooding occurs on Connellsville, Fourth, 
  Cook, and Main Streets in Fayette City
* Impact...At 33.0 feet, Flooding is widespread in Fayette City.
* Impact...At 34.1 feet, Division of American Chain and Cable Co. In 
  Monessen floods.
* Impact...At 35.0 feet, Backwater flooding in Monongahela along 
  Pigeon Creek causes flood waters up to 4.5 feet in businesses in 
  the lowest building in Penos Plaza and up to 6 feet in Armstrong 
  Park. Backwater flooding spreads upstream along Pigeon Creek to 
  the Route 43 overpass on Park Avenue.
* Impact...At 36.0 feet, Several homes are flooded on Lynn Street in 
  Roscoe.
* Impact...At 37.0 feet, 50 homes are flooded in Roscoe. Flooding 
  also occurs in the towns of Elco, Allenport, and Stockdale.


&&

LAT...LON 4011 7990 4016 7993 4019 7987 4016 7984
      4015 7987 4014 7987

$$

PAZ031-075-011630-
/O.CON.KPBZ.FL.A.0007.210901T2126Z-210902T2242Z/
/GYLP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
259 AM EDT Wed Sep 1 2021

The Flood Watch continues for
  the Monongahela River At Grays Landing.

* From this afternoon to tomorrow evening.
* At 11:45 PM EDT Tuesday the stage was 10.5 feet.
* Flood stage is 21.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late this afternoon.
* Impact...At 19.0 feet, The bike trail floods in Greensboro near 
  County Street.
* Impact...At 21.0 feet, The lock at Grays Landing Lock and Dam goes 
  out of service, and navigation is suspended.
* Impact...At 24.0 feet, The lock walls are overtopped at Grays 
  Landing Lock and Dam.
* Impact...At 25.0 feet, Flood waters reach Martin Ferry Road in the 
  village of Glasworks.


&&

LAT...LON 3979 7992 3986 7995 3986 7991 3979 7989

$$

PAZ031-075-011630-
/O.CON.KPBZ.FL.A.0011.210901T2233Z-210902T2235Z/
/PMRP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.UU/
259 AM EDT Wed Sep 1 2021

The Flood Watch continues for
  the Monongahela River At Point Marion.

* From this evening to tomorrow evening.
* At 12:15 AM EDT Wednesday the stage was 10.8 feet.
* Flood stage is 26.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached this evening.
* Impact...At 26.0 feet, Basement flooding begins in some homes and 
  businesses in Point Marion.
* Impact...At 27.5 feet, Flood waters reach the access road to Point 
  Marion Locks and Dam about 0.8 of a mile below the dam.
* Impact...At 28.0 feet, Water reaches the level reached on March 4, 
  2015.
* Impact...At 29.0 feet, The locks go out of service at the Point 
  Marion Locks and Dam, and navigation is suspended. Flood waters 
  reach Water Street near the intersection with Penn Street in Point 
  Marion.
* Impact...At 29.7 feet, The first floors of about twenty-five homes 
  in Point Marion are flooded, and backwater flooding occurs along 
  Camp Run.
* Impact...At 30.4 feet, Water levels reach the flood levels of the 
  flood of July 29, 2017.


&&

LAT...LON 3979 7990 3977 7992 3972 7988 3972 7992
      3978 7995

$$

PAZ075-011630-
/O.CON.KPBZ.FL.A.0010.210902T0024Z-210903T0945Z/
/CLLP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
259 AM EDT Wed Sep 1 2021

The Flood Watch continues for
  the Youghiogheny River At Connellsville.

* From this evening to early Friday morning.
* At 12:15 AM EDT Wednesday the stage was 2.8 feet.
* Flood stage is 12.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached this evening.
* Impact...At 12.0 feet, Flooding begins in the vicinity of Yough 
  Park.
* Impact...At 14.0 feet, Several inches of water floods basements of 
  about 30 homes along left bank. River is bankful along the left 
  bank just downstream from the Crawford Street Bridge. Water 
  reaches the level of the Hurricane Ivan flood of September 18, 
  2004.
* Impact...At 14.1 feet, Water reaches level of March 3, 2015.
* Impact...At 16.0 feet, About 100 homes on the west side of 
  Connellsville flood in the areas of Fifth, Sixth and Seventh 
  Streets.


&&

LAT...LON 3998 7961 4005 7963 4005 7959 3999 7957

$$

PAZ029-075-011630-
/O.CON.KPBZ.FL.A.0013.210902T0221Z-210903T0057Z/
/MAXP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
259 AM EDT Wed Sep 1 2021

The Flood Watch continues for
  the Monongahela River At Maxwell.

* From this evening to tomorrow evening.
* At 11:30 PM EDT Tuesday the stage was 9.6 feet.
* Flood stage is 32.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late this evening.
* Impact...At 27.0 feet, Brownsville Road at Albany Tunnel (near 
  Assad Iron and Metal) in Fayette County is closed due to high 
  water.
* Impact...At 28.0 feet, Middle Street and Liberty Street in West 
  Brownsville are closed due to storm drain system backups, and 
  several homes have basement flooding.
* Impact...At 31.0 feet, Navigation suspended, lock out of service.
* Impact...At 32.0 feet, Low lying areas of West Brownsville begin 
  to flood.
* Impact...At 33.3 feet, Water levels reach the flood levels of the 
  flood of July 30, 2017.
* Impact...At 33.5 feet, Lock walls overtopped.
* Impact...At 35.0 feet, Homes flood on Middle Street, Liberty 
  Street, Water Street, Broadway Street, River Street, and Axton 
  Street in West Brownsville.


&&

LAT...LON 4000 8002 4003 7998 4002 7989 3999 7993
      3998 7998

$$

PAZ021-029-011630-
/O.CON.KPBZ.FL.A.0009.210902T0233Z-210903T1453Z/
/ELZP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
259 AM EDT Wed Sep 1 2021

The Flood Watch continues for
  the Monongahela River Near Elizabeth.

* From this evening to late Friday morning.
* At 12:15 AM EDT Wednesday the stage was 10.8 feet.
* Flood stage is 20.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late this evening.
* Impact...At 17.5 feet, Navigation suspended, lock out of service.
* Impact...At 18.1 feet, Lock walls overtopped.
* Impact...At 20.0 feet, Small communities around Lock 3 area begin 
  minor flooding.
* Impact...At 22.0 feet, In West Elizabeth basements of numerous 
  homes in the block bounded by First and Water streets begin to 
  flood.
* Impact...At 23.0 feet, Industrial Chemical Corporation plant 
  floods.
* Impact...At 24.1 feet, Water levels reach the flood levels of the 
  flood of July 30, 2017.
* Impact...At 25.6 feet, Water reaches the first floor of numerous 
  homes from the intersection of First and Border Streets north to 
  the intersection of Mill and First streets in West Elizabeth.


&&

LAT...LON 4026 7994 4032 7988 4029 7984 4025 7990

$$

PAZ021-011630-
/O.CON.KPBZ.FL.A.0012.210902T0840Z-210903T1400Z/
/BDDP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
259 AM EDT Wed Sep 1 2021

The Flood Watch continues for
  the Monongahela River At Braddock.

* From late tonight to late Friday morning.
* At 11:45 PM EDT Tuesday the stage was 12.1 feet.
* Flood stage is 22.0 feet.
* Flooding is possible.
* Forecast...Flood stage may be reached late tonight.
* Impact...At 19.0 feet, Navigation suspended, lock out of service.
* Impact...At 20.8 feet, Lock walls overtopped.
* Impact...At 22.0 feet, Sewers begin to back up along 12th, 13th 
  and Buena Vista streets in McKeesport prompting evacuations to 
  begin. In Boston, backwater flooding on the Youghiogheny River 
  will begin to flood the restaurant on Saint David Street.
* Impact...At 23.0 feet, Backwater flooding along the Youghiogheny 
  river in McKeesport will flood the lower parking lot and dock area 
  of the McKees Point boat complex. Backwater flooding further 
  upstream on the Youghiogheny River will flood the lower parking 
  lot of the community park near the Boston bridge in Boston.
* Impact...At 24.0 feet, Sewers back up in McKeesport along Market, 
  12th and 13th streets affecting the Riverside Senior Care Center, 
  Kane Hospital and Isbir Manor.
* Impact...At 24.8 feet, Thirty homes along Route 837 in Dravosburg 
  flood.


&&

LAT...LON 4035 7990 4038 7987 4040 7990 4043 7988
      4036 7980 4034 7987

$$
218 
WGUS61 KPBZ 011530
FFAPBZ

Flood Watch
National Weather Service Pittsburgh PA
1130 AM EDT Wed Sep 1 2021

...The Flood Watch is replaced with a River Flood Warning for the 
following rivers in Pennsylvania...

  Monongahela River Near Charleroi affecting Washington, 
  Westmoreland and Fayette Counties.

  Monongahela River Near Elizabeth affecting Allegheny and 
  Washington Counties.

  Conemaugh River At Seward affecting Indiana and Higher Elevations 
  of Westmoreland zones.

  Youghiogheny River At Connellsville affecting Fayette County.

  Youghiogheny River At Sutersville affecting Allegheny and 
  Westmoreland Counties.

.Heavy rainfall associated with the passage of the remnants of 
tropical system Ida will cause these locations to rise above flood 
stage.

PAZ023-074-011630-
/O.CAN.KPBZ.FL.A.0008.210901T1743Z-210901T1530Z/
/SWDP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1130 AM EDT Wed Sep 1 2021

The Flood Watch is cancelled for
  the Conemaugh River At Seward
  and has been replaced with a Flood Warning.

* At 10:45 AM EDT Wednesday the stage was 8.8 feet.
* Flood stage is 12.0 feet.
* Forecast...Flood stage may be reached this afternoon.


&&

LAT...LON 4040 7896 4040 7905 4043 7904 4044 7898

$$

PAZ029-073-075-011630-
/O.CAN.KPBZ.FL.A.0006.210901T2124Z-210901T1530Z/
/CHRP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1130 AM EDT Wed Sep 1 2021

The Flood Watch is cancelled for
  the Monongahela River Near Charleroi
  and has been replaced with a Flood Warning.

* At 10:00 AM EDT Wednesday the stage was 12.6 feet.
* Flood stage is 28.0 feet.
* Forecast...Flood stage may be reached just after midnight tonight.


&&

LAT...LON 4011 7990 4016 7993 4019 7987 4016 7984
      4015 7987 4014 7987

$$

PAZ075-011630-
/O.CAN.KPBZ.FL.A.0010.210902T0024Z-210901T1530Z/
/CLLP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1130 AM EDT Wed Sep 1 2021

The Flood Watch is cancelled for
  the Youghiogheny River At Connellsville
  and has been replaced with a Flood Warning.

* At 10:15 AM EDT Wednesday the stage was 3.3 feet.
* Flood stage is 12.0 feet.
* Forecast...Flood stage may be reached late this evening.


&&

LAT...LON 3998 7961 4005 7963 4005 7959 3999 7957

$$

PAZ021-029-011630-
/O.CAN.KPBZ.FL.A.0009.210902T0233Z-210901T1530Z/
/ELZP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1130 AM EDT Wed Sep 1 2021

The Flood Watch is cancelled for
  the Monongahela River Near Elizabeth
  and has been replaced with a Flood Warning.

* At 10:15 AM EDT Wednesday the stage was 12.4 feet.
* Flood stage is 20.0 feet.
* Forecast...Flood stage may be reached tomorrow morning.


&&

LAT...LON 4026 7994 4032 7988 4029 7984 4025 7990

$$

PAZ021-073-011630-
/O.CAN.KPBZ.FL.A.0014.210902T0520Z-210901T1530Z/
/STSP1.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1130 AM EDT Wed Sep 1 2021

The Flood Watch is cancelled for
  the Youghiogheny River At Sutersville
  and has been replaced with a Flood Warning.

* At 10:15 AM EDT Wednesday the stage was 7.3 feet.
* Flood stage is 20.0 feet.
* Forecast...Flood stage may be reached tomorrow morning.


&&

LAT...LON 4021 7980 4026 7984 4027 7976 4023 7974

$$

What forecasters said that day

The local office's own words before this river flood watch went out, 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 this river flood watch went out at Aug 30, 7:39 AM EDT, 3 hours 40 minutes earlier.

Area forecast discussion, Aug 30, 7:39 AM EDT, 3 hours 40 minutes before
Area Forecast Discussion
National Weather Service Pittsburgh PA
739 AM EDT Mon Aug 30 2021

.SYNOPSIS...
Heavy rainfall associated with the remnants of Hurricane Ida is
expected across the Upper Ohio Valley Region on Tuesday night and
Wednesday. In the meantime, warm and humid weather continues with
periodic scattered showers and storms.

&&

.NEAR TERM /THROUGH TONIGHT/...
Another warm and humid day is on deck for the Upper Ohio Valley and
Allegheny Mountains. Some shower activity may be ongoing around dawn
as overnight convection wanes, but may not diminish entirely given a
warm/moist airmass characterized by PWATs above the 90th percentile
and MLCAPE near 1000 J/kg. As a result, have kept low-end POPs
through the morning hours.

As the morning progresses, insolation will lead to another day with
temps in the 80s and dewpoints in the 70s. This heating will yield
MLCAPE increasing to around or possibly in excess of 2000 J/kg by
mid-afternoon. At the same time, a cold front dropping south from the
Great Lakes should advance to near the I-80 corridor. HREF members
focus convective activity farther south towards and south of I-70
today along a pre-frontal trough, likely the outflow boundary from
the overnight convection, coincident with the passage of a shortwave
trough. Given the orientation of the sfc trough to cloud-bearing wind
aloft, west-to-east training storms are definitely possible as the
system inches southward with system motion. Very high PWAT air / warm
cloud depths will lend itself to efficient rain processes, leading
to high rain rates. This could lead to instances of flash flooding
where convection segments train.

North of I-70, showers/storms should initiate near the cold front
boundary as well as it drops southward given the destabilized
airmass. However, HREF members and probs are indicating less coverage
with the sfc front during the day.

&&

.SHORT TERM /TUESDAY THROUGH WEDNESDAY/...
By Tuesday morning, the aforementioned cold front will have
progressed to somewhere around the I-70 corridor. At this point, the
frontal boundary will become essentially stationary or at least very
slow-moving as we become sandwiched in a baroclinic zone between cool
northerlies from high pressure centered across Canada and warm,
tropical-like southerlies from the advancing remnants of tropical
disturbance Ida. 00z HRRR and NAM Nest both show scattered convection
initiating by the early-afternoon on Tuesday right along the sfc
front. The limiting factor to coverage and intensity of Tuesday's
storms will be the upper-level cloud cover from Ida. The less cloud
cover to begin the day, the greater we destabilizing and the
thunderstorm threat is in the afternoon... but if we remain clouded
in from the start, then thunderstorms will struggle with limited
CAPE. As far as temperature on Tuesday, look for a cooler day as
areas north of Pittsburgh will finally see some cold air advection...
while areas south of Pittsburgh will be underneath cloud cover
and/or rain.

Tuesday Night and Wednesday... here comes Ida.

The weakening tropical system Ida will begin to move northward
across the TN Valley Tuesday night and accelerate in response to a
northern stream trough digging southeastward from the Midwest. Rain
from the northern side of Ida will overspread northern West Virginia
and SW PA (and perhaps barely into SE Ohio close to the Ohio River)
overnight and continue through much of Wednesday as Ida moves
northeastward through Appalachia. This will pose a significant flood
threat to locations south and east of Pittsburgh and anyone in that
area needs to remain weather aware for the next few days.

How much rain and where exactly? That's the biggest question. Recent
model guidance has trended slightly farther SE, painting the axis of
heaviest rainfall somewhere between SW PA and the higher terrain of
WV, with Morgantown being near the center axis in several models.
Across the heaviest rainband, look for amounts between 3 and 6 inches
with localized higher amounts. Farther north, amounts should drop
off precipitously w/ areas north of Pittsburgh likely receiving less
than an inch. Where does this put the immediate Pittsburgh metro? In
an area of high uncertainty. Model guidance ranges from roughly just
1 inch upwards to about 5 inches for Allegheny County and
surrounding area, all dependent on the exact track of the system. We
should be able to hone in on these details by the evening suite of
model guidance.

Rain will come to an end by dusk or shortly thereafter on Wednesday
as the remnants of Ida depart eastward, with much cooler, drier air
filtering in behind the system.

&&

.LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/...
Cooler and drier conditions are anticipated late week and into the
Labor Day Weekend with building high pressure.

&&

.AVIATION /12Z MONDAY THROUGH FRIDAY/...
Areas of MVFR/IFR fog and cigs should continue through this morning
as a shortwave moves through the region, with scattered / vicinity
showers impacting mainly ZZV, FKL, and DUJ. Diurnal mixing should
then improve cigs to VFR through midday as the shortwave treks ewd.

Additional convection and associated restrictions is likely to
develop this afternoon, south of DUJ and FKL, along an encroaching
frontal boundary. Scattered showers and embedded thunderstorms should
continue through this eve, with lingering llvl moisture promoting
IFR/MVFR cigs through daybreak Tues.

.Outlook...
Rain chances and widespread restrictions are likely late Tuesday
into Wednesday with the remnants of Ida.

VFR and dry weather is expected after the remnants exit Thursday.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
PA...Flash Flood Watch from late Tuesday night through late Wednesday
     night for PAZ021>023-029-031-073>076.
OH...Flash Flood Watch from late Tuesday night through late Wednesday
     night for OHZ059-068-069.
WV...Flash Flood Watch from late Tuesday night through late Wednesday
     night for WVZ002>004-012-021-509>514.

&&
Hazardous weather outlook, Aug 30, 6:10 AM EDT, 5 hours 9 minutes before
Hazardous Weather Outlook
National Weather Service Pittsburgh PA
610 AM EDT Mon Aug 30 2021

OHZ059-068-069-PAZ021>023-029-031-073>076-WVZ002>004-012-021-509>514-
311015-
Belmont-Noble-Monroe-Allegheny-Armstrong-Indiana-Washington-Greene-
Westmoreland-Higher Elevations of Westmoreland-Fayette-
Higher Elevations of Fayette-Brooke-Ohio-Marshall-Wetzel-Marion-
Monongalia-Ridges of Eastern Monongalia and Northwestern Preston-
Preston-Eastern Preston-Western Tucker-Eastern Tucker-
610 AM EDT Mon Aug 30 2021

...FLASH FLOOD WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH LATE
WEDNESDAY NIGHT...

This Hazardous Weather Outlook is for east central Ohio, southwest
Pennsylvania, western Pennsylvania, and northern West Virginia.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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

   Flash Flood Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

OHZ039>041-048>050-057-058-PAZ007>009-013>016-020-WVZ001-311015-
Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson OH-
Muskingum-Guernsey-Mercer-Venango-Forest-Lawrence-Butler-Clarion-
Jefferson PA-Beaver-Hancock-
610 AM EDT Mon Aug 30 2021

This Hazardous Weather Outlook is for east central Ohio, western
Pennsylvania and northern West Virginia.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

The office that day

Everything else NWS Pittsburgh, PA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 30, 2:11 AM EDTAreal Flood WarningPBZIndiana, Jefferson117 min
Aug 30, 4:33 AM EDTFlash Flood WatchPBZAllegheny, Armstrong, Beaver, Butler, Fayette, Greene and 2 more57 hr
Aug 30, 11:19 AM EDTRiver Flood WatchPBZFayette4 days
Aug 30, 11:19 AM EDTRiver Flood WatchPBZFayette, Greene3 days
Aug 30, 11:19 AM EDTRiver Flood WatchPBZAllegheny4 days
Aug 30, 11:19 AM EDTRiver Flood WatchPBZFayette, Washington, Westmoreland4 days
Aug 30, 11:19 AM EDTRiver Flood WatchPBZFayette, Greene3 days
Aug 30, 11:19 AM EDTRiver Flood WatchPBZWestmoreland3 days
Aug 30, 11:23 AM EDTRiver Flood AdvisoryPBZAllegheny58 hr

Nearby

River Flood Watches in Pennsylvania, 2021Every river flood watch in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.