Alert archive / Pennsylvania / River Flood Watches in 2021
River Flood Watch 9, NWS Pittsburgh, PA
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.
- 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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 2:11 AM EDT | Areal Flood Warning | PBZ | Indiana, Jefferson | 117 min |
| Aug 30, 4:33 AM EDT | Flash Flood Watch | PBZ | Allegheny, Armstrong, Beaver, Butler, Fayette, Greene and 2 more | 57 hr |
| Aug 30, 11:19 AM EDT | River Flood Watch | PBZ | Fayette | 4 days |
| Aug 30, 11:19 AM EDT | River Flood Watch | PBZ | Fayette, Greene | 3 days |
| Aug 30, 11:19 AM EDT | River Flood Watch | PBZ | Allegheny | 4 days |
| Aug 30, 11:19 AM EDT | River Flood Watch | PBZ | Fayette, Washington, Westmoreland | 4 days |
| Aug 30, 11:19 AM EDT | River Flood Watch | PBZ | Fayette, Greene | 3 days |
| Aug 30, 11:19 AM EDT | River Flood Watch | PBZ | Westmoreland | 3 days |
| Aug 30, 11:23 AM EDT | River Flood Advisory | PBZ | Allegheny | 58 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.