Alert archive / Pennsylvania / River Flood Warnings in 2020

River Flood Warning 5, NWS Philadelphia/Mount Holly

January 25, 2020Chester County, Montgomery County, Philadelphia County, Pennsylvania

NWS Philadelphia/Mount Holly issued this river flood warning at Jan 25, 2020, 6:28 PM EST for Chester County, Montgomery County, Philadelphia County, Pennsylvania. It took effect at Jan 25, 2020, 7:00 PM EST. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Jan 25, 2020, 6:28 PM EST (23:28 UTC)
In effect from: Jan 25, 2020, 7:00 PM EST
Expired: Jan 26, 2020, 1:52 AM EST
In force: 7 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 river

Written for the forecast point Schuylkill River at Norristown (NRSP1). The gauge peaked at 13.32 ft at Jan 25, 2020, 8:00 PM EST.

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.

544 
WGUS41 KPHI 252328
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mt Holly NJ
628 PM EST Sat Jan 25 2020

...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.

&&

PAC029-091-101-260528-
/O.NEW.KPHI.FL.W.0005.200126T0000Z-200126T1617Z/
/NRSP1.1.ER.200126T0000Z.200126T0600Z.200126T1017Z.NO/
628 PM EST Sat Jan 25 2020

The National Weather Service in Mount Holly NJ has issued a 

* Flood Warning for 
  The Schuylkill River at Norristown.
* until Sunday morning...Or until the warning is cancelled.
* At  5:30 PM Saturday the stage was 12.9 feet.
* Flood stage is 13.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage by this evening and continue to rise to near
  14.0 feet by after midnight tonight.the river will fall below flood stage by 
  early tomorrow.
* 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 14.3 feet on Nov 3 
  2018.  

 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Schuylkill River
  Norristown             13.0   12.95  Sat 5 PM    14.0    Sun 1 AM 
 
&&
 
LAT...LON 4006 7542 4013 7535 4002 7517 3998 7525
                                      

$$

1 follow-up statement

171 
WGUS81 KPHI 260652
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
152 AM EST Sun Jan 26 2020

...The Flood Warning is cancelled 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.

&&

PAC029-091-101-260722-
/O.CAN.KPHI.FL.W.0005.000000T0000Z-200126T1617Z/
/NRSP1.1.ER.200125T2236Z.200126T0100Z.200126T0430Z.NO/
152 AM EST Sun Jan 26 2020

The Flood Warning is cancelled for
  The Schuylkill River at Norristown.
* At  1:30 AM Sunday the stage was 12.6 feet.
* Flood stage is 13.0 feet.
* Fell below flood stage at 11:30 PM Saturday.
* Forecast...The river will continue to fall to 10.7 feet by tomorrow morning.
* 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   12.59  Sun 1 AM    12.9    Sun 3 AM 
 
&&
 
LAT...LON 4006 7542 4013 7535 4002 7517 3998 7525
                                      

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 25, 10:32 AM EST	Areal Flood Warning	PHI	Chester, Delaware	4 hr
Jan 25, 11:34 AM EST	River Flood Warning	PHI	Chester	7 hr
Jan 25, 11:52 AM EST	Areal Flood Advisory	PHI	Berks, Bucks, Chester, Delaware, Lehigh, Montgomery	3 hr
Jan 25, 11:52 AM EST	River Flood Warning	PHI	Delaware	4 hr
Jan 25, 11:55 AM EST	Areal Flood Warning	PHI	Chester, Lehigh, Montgomery, Philadelphia	3 hr
Jan 25, 12:02 PM EST	Areal Flood Warning	PHI	Chester, Delaware, Philadelphia	3 hr
Jan 25, 12:57 PM EST	Areal Flood Warning	PHI	Chester	5 hr
Jan 25, 2:59 PM EST	Areal Flood Warning	PHI	Chester, Delaware, Philadelphia	3 hr
Jan 25, 3:00 PM EST	Areal Flood Warning	PHI	Chester, Lehigh, Montgomery, Philadelphia	4 hr
Jan 25, 3:00 PM EST	Areal Flood Warning	PHI	Chester, Delaware	2 hr
Jan 25, 4:05 PM EST	Areal Flood Warning	PHI	Montgomery, Philadelphia	6 hr

Nearby

River Flood Warnings in Pennsylvania, 2020 Every river flood warning in 2020

Sources

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