Alert archive / Pennsylvania / River Flood Warnings in 2019

River Flood Warning 22, NWS Philadelphia/Mount Holly

July 11, 2019Chester County, Montgomery County, Philadelphia County, Pennsylvania

NWS Philadelphia/Mount Holly issued this river flood warning at Jul 11, 2019, 7:03 PM EDT for Chester County, Montgomery County, Philadelphia County, Pennsylvania. It took effect at Jul 12, 2019, 3:28 AM EDT. It was in force for 17 hr.

The area

The outline as issued.

The facts

Issued: Jul 11, 2019, 7:03 PM EDT (23:03 UTC)
In effect from: Jul 12, 2019, 3:28 AM EDT
Expired: Jul 12, 2019, 8:40 PM EDT
In force: 17 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: Minor

Counties Chester County, PA, Montgomery County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 78 km from the middle of the area, began a volume at 23:07 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 Schuylkill River at Norristown (NRSP1). The gauge peaked at 16.48 ft at Jul 12, 2019, 5:00 AM EDT.

Action stage: 12 ft
Minor stage: 13 ft
Moderate stage: 17 ft
Major stage: 19 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01473500, 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.

267 
WGUS41 KPHI 112303
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mt Holly NJ
703 PM EDT Thu Jul 11 2019

...The National Weather Service in Mount Holly NJ has issued a 
flood warning for the following rivers in Pennsylvania...

  Schuylkill River At Norristown affecting Chester...Montgomery
  and Philadelphia Counties

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...Do not attempt to drive through flooded areas. 
The water may be deeper than you think.

&&

PAC029-091-101-120502-
/O.NEW.KPHI.FL.W.0022.190712T1000Z-190713T0040Z/
/NRSP1.1.ER.190712T1000Z.190712T1200Z.190712T1840Z.NO/
703 PM EDT Thu Jul 11 2019

The National Weather Service in Mount Holly NJ has issued a 

* Flood Warning for 
  The Schuylkill River at Norristown.
* From Friday morning to Friday evening...or until the warning is 
  cancelled.
* At 6:15 PM Thursday the stage was 8.7 feet.
* Flood stage is 13.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage to near 13.5 feet by tomorrow 
  morning. The river will fall below flood stage by early tomorrow 
  afternoon.
* Impact...At 13.0 feet...Water begins to cover and close Riverview 
  Boulevard in West Norriton.
* Flood history...This crest compares to a previous crest of 13.4 
  feet on Sep 28 2018.  
 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG    DAY TIME    CREST

Schuylkill River
  Norristown             13.0   8.73   Thu 6 PM    13.5  Fri 8 AM 
 
&&
 
LAT...LON 4006 7542 4013 7535 4002 7517 3998 7525
                                      

$$

Kruzdlo

4 follow-up statements

996 
WGUS41 KPHI 120200
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mt Holly NJ
1000 PM EDT Thu Jul 11 2019

...The National Weather Service in Mount Holly NJ has issued 
a flood warning for the following rivers in Pennsylvania...

  Schuylkill River At Philadelphia affecting Montgomery and 
  Philadelphia Counties
  
  Schuylkill River At Norristown affecting Chester...Montgomery
  and Philadelphia Counties

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...Do not attempt to drive through flooded areas. 
The water may be deeper than you think.

&&

PAC091-120230-
/O.CAN.KPHI.FL.W.0020.000000T0000Z-190712T2000Z/
/PTNP1.1.ER.190711T2257Z.190712T0002Z.190712T0028Z.NO/
1000 PM EDT Thu Jul 11 2019

* At 9:31 PM Thursday the stage was 11.6 feet.
* Flood stage is 12.5 feet.
* No flooding is currently forecast.
* Impact...At 11.0 feet...Sewers in the Pottstown area, due to 
  backwater effects, begin to flood.
 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Schuylkill River
  Pottstown              12.5   11.63  Thu 10 PM   Crested and falling 
 
&&
 
LAT...LON 4020 7569 4026 7562 4013 7535 4006 7542
                                      

$$

PAC029-091-101-120800-
/O.EXT.KPHI.FL.W.0022.190712T0800Z-190712T2242Z/
/NRSP1.1.ER.190712T0800Z.190712T1200Z.190712T1642Z.NO/
1000 PM EDT Thu Jul 11 2019

The Flood Warning continues for 
 The Schuylkill River At Norristown.
* From late tonight to Friday evening...or until the warning is 
  cancelled.
* At 9:30 PM Thursday the stage was 11.1 feet.
* Flood stage is 13.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage overnight and continue to rise
  to near 15.2 feet by tomorrow morning. The river will fall below
  flood stage by early tomorrow afternoon.
* Impact...At 15.0 feet...River Road in West Conshohocken begins to
  flood. The lower garages at the Riverview Landing and the Lofts at 
  Valley Forge start to take on water. The lower section of Port Indian
  Road in West Norriton becomes impassable.
* Flood history...This crest compares to a previous crest of 15.1 feet 
  on Aug 14 2018.  
 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG    DAY TIME    CREST

Schuylkill River
  Norristown             13.0   11.11  Thu 9 PM    15.2    Fri 8 AM 
 
&&
 
LAT...LON 4006 7542 4013 7535 4002 7517 3998 7525
                                      

$$

PAC091-101-120800-
/O.NEW.KPHI.FL.W.0026.190712T1100Z-190712T1915Z/
/PADP1.1.ER.190712T1100Z.190712T1200Z.190712T1315Z.NO/
1000 PM EDT Thu Jul 11 2019

The National Weather Service in Mount Holly NJ has issued a 

* Flood Warning for 
  The Schuylkill River at Philadelphia.
* From Friday morning to Friday afternoon...or until the warning
  is cancelled.
* At 9:00 PM Thursday the stage was 7.1 feet.
* Flood stage is 11.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage overnight and continue to 
  rise to near 11.4 feet by tomorrow morning. The river will fall below 
  flood stage by late tomorrow morning.
* Impact...At 11.5 feet...Route 1 off ramp to Ridge Avenue is flooded
  and closed. MLK Drive is flooded and closed between Greenland Drive 
  and Montgomery Drive.
* Flood history...This crest compares to a previous crest of 11.4 feet 
  on Jun 21 2003.  
 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG    DAY TIME    CREST

Schuylkill River
  Philadelphia           11.0   7.08   Thu 9 PM    11.4    Fri 8 AM 
 
&&
 
LAT...LON 3998 7525 4002 7517 3988 7517 3985 7525
                                      

$$

Kruzdlo

392 
WGUS81 KPHI 120732
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
332 AM EDT Fri Jul 12 2019

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

  Schuylkill River At Norristown affecting Chester...Montgomery and Philadelphia 
  Counties
  Schuylkill River At Philadelphia affecting Montgomery and Philadelphia Counties

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...Do not attempt to drive through flooded areas. The water may be
deeper than you think.

&&

PAC029-091-101-121732-
/O.EXT.KPHI.FL.W.0022.190712T0728Z-190712T2200Z/
/NRSP1.1.ER.190712T0232Z.190712T1200Z.190712T1600Z.NO/
332 AM EDT Fri Jul 12 2019

The Flood Warning continues for
  The Schuylkill River at Norristown.
* until this evening...or until the warning is cancelled.
* At  2:30 AM Friday the stage was 15.8 feet.
* Flood stage is 13.0 feet.
* Minor flooding is occurring.
* Forecast...The river will continue rising to near 16.3 feet by this morning. 
  The river will fall below flood stage this afternoon.
* Impact...At 16.0 feet...The Upper Merion Boathouse starts to flood.
* Flood history...This crest compares to a previous crest of 16.3 feet on Jun 21 
  2003.  

 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Schuylkill River
  Norristown             13.0   15.83  Fri 2 AM    16.3    Fri 8 AM 
 
&&
 
LAT...LON 4006 7542 4013 7535 4002 7517 3998 7525
                                      

$$

PAC091-101-121732-
/O.EXT.KPHI.FL.W.0026.190712T0900Z-190712T2224Z/
/PADP1.1.ER.190712T0900Z.190712T1400Z.190712T1624Z.NO/
332 AM EDT Fri Jul 12 2019

The Flood Warning continues for
  The Schuylkill River at Philadelphia.
* until this evening...or until the warning is cancelled.
* At  3:00 AM Friday the stage was 11.0 feet.
* Flood stage is 11.0 feet.
* Minor flooding is occurring.
* Forecast...The river will continue rising to near 11.9 feet by late this morning.
  The river will fall below flood stage by early this afternoon.
* Impact...At 12.0 feet...Main Street in Manayunk floods in the area of Shurs 
  Lane.
* Flood history...This crest compares to a previous crest of 11.9 feet on Sep 29 
  2004.  

 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Schuylkill River
  Philadelphia           11.0   10.98  Fri 3 AM    11.9    Fri 10 AM
 
&&
 
LAT...LON 3998 7525 4002 7517 3988 7517 3985 7525
                                      

$$

Meola

883 
WGUS81 KPHI 121424
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
1024 AM EDT Fri Jul 12 2019

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

  Schuylkill River At Philadelphia affecting Montgomery and Philadelphia Counties
...The Flood Warning continues for the following rivers in Pennsylvania...
  Schuylkill River At Norristown affecting Chester...Montgomery and Philadelphia
  Counties

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...Do not attempt to drive through flooded areas. The water may be
deeper than you think.

&&

PAC029-091-101-122200-
/O.CON.KPHI.FL.W.0022.000000T0000Z-190712T2200Z/
/NRSP1.1.ER.190712T0232Z.190712T0900Z.190712T1600Z.NO/
1024 AM EDT Fri Jul 12 2019

The Flood Warning continues for
  The Schuylkill River at Norristown.
* At 9:30 AM Friday the stage was 14.2 feet.
* Flood stage is 13.0 feet.
* Forecast...The river will continue to fall to below flood stage by this 
  afternoon.
* Impact...At 15.0 feet...River Road in West Conshohocken begins to flood. The 
  lower garages at the Riverview Landing and the Lofts at Valley Forge start to 
  take on water. The lower section of Port Indian Road in West Norriton becomes 
  impassable.
 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Schuylkill River
  Norristown             13.0   14.19  Fri 9 AM    Crested and falling
 
&&
 
LAT...LON 4006 7542 4013 7535 4002 7517 3998 7525
                                      

$$

PAC091-101-121945-
/O.EXT.KPHI.FL.W.0026.000000T0000Z-190712T1945Z/
/PADP1.1.ER.190712T0703Z.190712T1030Z.190712T1345Z.NO/
1024 AM EDT Fri Jul 12 2019

The Flood Warning continues for
  The Schuylkill River at Philadelphia.
* At 9:00 AM Friday the stage was 11.4 feet.
* Flood stage is 11.0 feet.
* Minor flooding is occurring.
* Forecast...The river will continue to fall to below flood stage by late this 
  morning.
* Impact...At 11.5 feet...Route 1 off ramp to Ridge Avenue is flooded and 
  closed. MLK Drive is flooded and closed between Greenland Drive and Montgomery
  Drive.
 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Schuylkill River
  Philadelphia           11.0   11.39  Fri 9 AM     Crested and falling 
 
&&
 
LAT...LON 3998 7525 4002 7517 3988 7517 3985 7525
                                      

$$

Robertson

039 
WGUS81 KPHI 121638
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
1238 PM EDT Fri Jul 12 2019

...The Flood Warning is cancelled for the following rivers in Pennsylvania...

  Schuylkill River At Norristown affecting Chester...Montgomery and Philadelphia
  Counties
  Schuylkill River At Philadelphia affecting Montgomery and Philadelphia 
  Counties

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...Do not attempt to drive through flooded areas. The water may be
deeper than you think.

&&

PAC029-091-101-121708-
/O.CAN.KPHI.FL.W.0022.000000T0000Z-190712T2200Z/
/NRSP1.1.ER.190712T0232Z.190712T0900Z.190712T1443Z.NO/
1238 PM EDT Fri Jul 12 2019

The Flood Warning is cancelled for
  The Schuylkill River at Norristown.
* At 11:30 AM Friday the stage was 12.3 feet.
* Flood stage is 13.0 feet.
* Fell below flood stage at 10:43 AM Friday.
* Forecast...The river will continue to fall to 10.0 feet by tomorrow morning.
* Impact...At 12.5 feet...Flooding occurs in West Norriton. The West Indian Lane
  bridge begins to flood.
 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Schuylkill River
  Norristown             13.0   12.32  Fri 11 AM   Crested and falling 
 
&&
 
LAT...LON 4006 7542 4013 7535 4002 7517 3998 7525
                                      

$$

PAC091-101-121708-
/O.CAN.KPHI.FL.W.0026.000000T0000Z-190712T1945Z/
/PADP1.1.ER.190712T0703Z.190712T1030Z.190712T1428Z.NO/
1238 PM EDT Fri Jul 12 2019

The Flood Warning is cancelled for
  The Schuylkill River at Philadelphia.
* At 12:00 PM Friday the stage was 10.3 feet.
* Flood stage is 11.0 feet.
* Fell below flood stage at 10:28 AM Friday.
* Forecast...The river will continue to fall to 7.7 feet by tomorrow morning.
* Impact...At 11.0 feet...Kelly Drive is flooded and closed between Hunting Park
  Avenue and Falls Bridge. The Flat Rock area is flooded. 

 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Schuylkill River
  Philadelphia           11.0   10.31  Fri 12 PM    Crested and falling 
 
&&
 
LAT...LON 3998 7525 4002 7517 3988 7517 3985 7525
                                      

$$

Robertson

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 11, 3:44 AM EDT	Flash Flood Watch	PHI	Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 2 more	18 hr
Jul 11, 12:33 PM EDT	Special Weather Statement	PHI	Chester	57 min
Jul 11, 1:23 PM EDT	Special Weather Statement	PHI	Chester, Delaware	52 min
Jul 11, 1:44 PM EDT	Severe Thunderstorm Warning	PHI	Delaware, Montgomery, Philadelphia	61 min
Jul 11, 2:41 PM EDT	Special Weather Statement	PHI	Philadelphia	64 min
Jul 11, 2:44 PM EDT	Special Weather Statement	PHI	Bucks, Montgomery	61 min
Jul 11, 2:50 PM EDT	Areal Flood Advisory Emergency	PHI	Berks, Chester, Montgomery	4 hr
Jul 11, 3:00 PM EDT	Flash Flood Warning	PHI	Berks, Chester, Montgomery	8 hr
Jul 11, 3:13 PM EDT	Areal Flood Advisory	PHI	Bucks, Carbon, Lehigh, Monroe, Northampton	4 hr
Jul 11, 3:33 PM EDT	Areal Flood Advisory	PHI	Northampton	4 hr
Jul 11, 3:45 PM EDT	Flash Flood Warning	PHI	Berks, Bucks, Lehigh, Montgomery, Northampton	4 hr
Jul 11, 4:45 PM EDT	Flash Flood Warning Emergency	PHI	Berks, Montgomery	4 hr
Jul 11, 5:12 PM EDT	Flash Flood Warning	PHI	Chester	4 hr
Jul 11, 5:20 PM EDT	Flash Flood Warning	PHI	Bucks, Chester, Montgomery	4 hr
Jul 11, 5:33 PM EDT	Areal Flood Advisory	PHI	Bucks	4 hr
Jul 11, 6:14 PM EDT	Severe Thunderstorm Warning	PHI	Delaware, Montgomery, Philadelphia	61 min
Jul 11, 6:15 PM EDT	Flash Flood Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	4 hr
Jul 11, 6:17 PM EDT	Areal Flood Advisory	PHI	Bucks	4 hr
Jul 11, 6:28 PM EDT	River Flood Warning	PHI	Montgomery	22 hr
Jul 11, 6:57 PM EDT	River Flood Warning	PHI	Montgomery	12 hr
Jul 11, 7:19 PM EDT	River Flood Warning	PHI	Chester	7 hr
Jul 11, 7:47 PM EDT	Flash Flood Warning	PHI	Berks, Bucks, Lehigh, Montgomery	3 hr

Nearby

River Flood Warnings in Pennsylvania, 2019 Every river flood warning in 2019

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.