Alert archive / Pennsylvania / River Flood Warnings in 2018

River Flood Warning 8, NWS Philadelphia/Mount Holly

April 16, 2018Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this river flood warning at Apr 16, 2018, 11:41 AM EDT for Bucks County, Pennsylvania. It took effect at Apr 16, 2018, 12:00 PM EDT. It was in force for 11 hr.

The area

The outline as issued.

The facts

Issued: Apr 16, 2018, 11:41 AM EDT (15:41 UTC)
In effect from: Apr 16, 2018, 12:00 PM EDT
Expired: Apr 16, 2018, 11:15 PM EDT
In force: 11 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: Minor

County Bucks County, PA

The radar

The Philadelphia radar (KDIX), 49 km from the middle of the area, began a volume at 15:41 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 Neshaminy Creek near Langhorne (LNGP1). The gauge peaked at 10.29 ft at Apr 16, 2018, 3:00 PM EDT.

Action stage: 8 ft
Minor stage: 9 ft
Moderate stage: 12 ft
Major stage: 14 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01465500, 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.

913 
WGUS41 KPHI 161541
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mt Holly NJ
1141 AM EDT Mon Apr 16 2018

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

  Neshaminy Creek At Langhorne affecting Bucks County

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

PAC017-162141-
/O.NEW.KPHI.FL.W.0008.180416T1600Z-180417T0600Z/
/LNGP1.1.ER.180416T1600Z.180416T1800Z.180417T0000Z.NO/
1141 AM EDT Mon Apr 16 2018

The National Weather Service in Mount Holly NJ has issued a 

* Flood Warning for 
  The Neshaminy Creek at Langhorne.
* until late tonight...Or until the warning is cancelled.
* At 11:15 AM Monday the stage was 8.8 feet.
* Flood stage is 9.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage by this afternoon and continue to rise to 
  near 9.9 feet by this afternoon.the river will fall below flood stage by this 
  evening.


 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Neshaminy Creek
  Langhorne              9.0    8.80  Mon 11 AM    9.9    Mon 2 PM 
 
&&
 
LAT...LON 4019 7498 4020 7491 4008 7486 4006 7493
                                      

$$

3 follow-up statements

556 
WGUS41 KPHI 162043
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mt Holly NJ
443 PM EDT Mon Apr 16 2018

...Forecast flooding changed from Minor to Moderate severity for the 
following rivers in Pennsylvania...
  Neshaminy Creek At Langhorne affecting Bucks County

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

PAC017-170243-
/O.EXT.KPHI.FL.W.0008.000000T0000Z-180417T0900Z/
/LNGP1.2.ER.180416T1525Z.180416T2100Z.180417T0300Z.NO/
443 PM EDT Mon Apr 16 2018

...Observed flooding increased from Minor to Moderate severity...
...Forecast flooding increased from Minor to Moderate severity...
The Flood Warning continues for 
 The Neshaminy Creek at Langhorne.
* until late tonight...or until the warning is cancelled.
* At  4:15 PM Monday the stage was 10.2 feet.
* Flood stage is 9.0 feet.
* Moderate flooding is occurring and Moderate flooding is forecast.
* Forecast...The river will continue rising to near 10.4 feet by early 
  this evening. The river will fall below flood stage tonight.

 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Neshaminy Creek
  Langhorne              9.0   10.25  Mon 4 PM    10.4    Mon 5 PM 
 
&&
 
LAT...LON 4019 7498 4020 7491 4008 7486 4006 7493
                                      

$$

MPS

371 
WGUS41 KPHI 170018
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mt Holly NJ
818 PM EDT Mon Apr 16 2018

  Neshaminy Creek At Langhorne affecting Bucks County

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

PAC017-170618-
/O.CON.KPHI.FL.W.0008.000000T0000Z-180417T0900Z/
/LNGP1.2.ER.180416T1525Z.180416T2030Z.180417T0300Z.NO/
818 PM EDT Mon Apr 16 2018

The Flood Warning continues for 
 The Neshaminy Creek At Langhorne.
* until late tonight...Or until the warning is cancelled.
* At  7:15 PM Monday the stage was 10.1 feet.
* Flood stage is 9.0 feet.
* Moderate flooding is occurring and Minor flooding is forecast.
* Forecast...The river will continue to fall to below flood stage 
  by tonight.

 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Neshaminy Creek
  Langhorne              9.0   10.06  Mon 7 PM     9.0    Mon 11 PM
 
&&
 
LAT...LON 4019 7498 4020 7491 4008 7486 4006 7493
                                      

$$

MPS

672 
WGUS81 KPHI 170315
FLSPHI
Flood Statement
National Weather Service Mount Holly NJ
1115 PM EDT Mon Apr 16 2018

...The Flood Warning is cancelled for the Neshaminy Creek...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

PAC017-170345-
/O.CAN.KPHI.FL.W.0008.000000T0000Z-180417T0900Z/
/LNGP1.2.ER.180416T1525Z.180416T2030Z.180417T0046Z.NO/
1115 PM EDT Mon Apr 16 2018

The Flood Warning is cancelled for
  The Neshaminy Creek at Langhorne.
* At 10:15 PM Monday, the creek level was 7.4 feet.
* Flood stage is 9.0 feet.
* The creek fell below flood stage at 8:46 PM Monday.
* Forecast...The creek level will continue to fall.
 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Neshaminy Creek
  Langhorne              9.0    7.40  Mon 1015 PM  Crested 
 
&&
 
LAT...LON 4019 7498 4020 7491 4008 7486 4006 7493                                     

$$

Iovino

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 16, 12:32 AM EDT	Winter Weather Advisory	PHI	Carbon, Monroe	8 hr
Apr 16, 5:34 AM EDT	Areal Flood Advisory	PHI	Chester, Delaware	4 hr
Apr 16, 5:52 AM EDT	Areal Flood Advisory	PHI	Bucks, Delaware, Montgomery, Philadelphia	7 hr
Apr 16, 6:30 AM EDT	Areal Flood Advisory	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	4 hr
Apr 16, 7:04 AM EDT	Flash Flood Warning	PHI	Chester, Delaware, Montgomery, Philadelphia	4 hr
Apr 16, 7:26 AM EDT	Special Weather Statement	PHI	Bucks, Philadelphia	34 min
Apr 16, 7:45 AM EDT	River Flood Warning	PHI	Delaware	4 hr
Apr 16, 8:44 AM EDT	Areal Flood Warning	PHI	Philadelphia	2 hr
Apr 16, 9:26 AM EDT	Areal Flood Warning	PHI	Bucks	4 hr
Apr 16, 10:45 AM EDT	Areal Flood Warning	PHI	Chester, Delaware, Montgomery, Philadelphia	4 hr
Apr 16, 12:04 PM EDT	Special Weather Statement	PHI	Chester	26 min
Apr 16, 1:31 PM EDT	Areal Flood Warning	PHI	Bucks, Philadelphia	4 hr
Apr 16, 2:27 PM EDT	Areal Flood Warning	PHI	Montgomery, Philadelphia	5 hr
Apr 16, 2:45 PM EDT	Coastal Flood Warning	PHI	Bucks, Delaware, Philadelphia	3 hr

Nearby

River Flood Warnings in Pennsylvania, 2018 Every river flood warning in 2018

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.