Alert archive / Pennsylvania / River Flood Warnings in 2018

River Flood Warning 4, NWS Philadelphia/Mount Holly

February 11, 2018Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this river flood warning at Feb 11, 2018, 3:15 PM EST for Bucks County, Pennsylvania. It took effect at Feb 11, 2018, 8:11 PM EST. It was in force for 12 hr.

The area

The outline as issued.

The facts

Issued: Feb 11, 2018, 3:15 PM EST (20:15 UTC)
In effect from: Feb 11, 2018, 8:11 PM EST
Expired: Feb 12, 2018, 8:15 AM EST
In force: 12 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 20:18 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 9.20 ft at Feb 11, 2018, 7:00 PM EST.

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.

436 
WGUS41 KPHI 112015
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mt Holly NJ
315 PM EST Sun Feb 11 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.

&&

PAC017-120215-
/O.NEW.KPHI.FL.W.0004.180212T0234Z-180212T1315Z/
/LNGP1.1.ER.180212T0234Z.180212T0600Z.180212T0715Z.NO/
315 PM EST Sun Feb 11 2018

The National Weather Service in Mount Holly NJ has issued a 

* Flood Warning for 
  The Neshaminy Creek at Langhorne.
* From this evening to Monday morning...Or until the warning is
  cancelled.
* At 2:15 PM Sunday the stage was 6.9 feet.
* Flood stage is 9.0 feet.
* Minor flooding is forecast.


                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG   DAY TIME     CREST

Neshaminy Creek
  Langhorne              9.0    6.90  Sun 2 PM     9.4    Mon 1 AM 
 
&&
 
LAT...LON 4019 7498 4020 7491 4008 7486 4006 7493
                                      

$$

Kruzdlo

2 follow-up statements

103 
WGUS81 KPHI 120114
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
814 PM EST Sun Feb 11 2018

...The Flood Warning continues 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.

&&

PAC017-120648-
/O.EXT.KPHI.FL.W.0004.180212T0111Z-180212T0648Z/
/LNGP1.1.ER.180211T2241Z.180211T2330Z.180212T0048Z.NO/
814 PM EST Sun Feb 11 2018

The Flood Warning continues for
  The Neshaminy Creek at Langhorne.
* until late tonight...or until the warning is cancelled.
* At  7:15 PM Sunday the stage was 9.1 feet and falling.
* Flood stage is 9.0 feet.
* Minor flooding is occurring.
* Forecast...The river will continue to fall to below flood stage later this 
  evening.

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Neshaminy Creek
  Langhorne              9.0    9.14  Sun 7 PM     Already crested
 
&&
 
LAT...LON 4019 7498 4020 7491 4008 7486 4006 7493
                                      

$$

922 
WGUS81 KPHI 120205
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
905 PM EST Sun Feb 11 2018

...The Flood Warning is cancelled 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.

&&

PAC017-120235-
/O.CAN.KPHI.FL.W.0004.000000T0000Z-180212T0648Z/
/LNGP1.1.ER.180211T2241Z.180211T2330Z.180212T0035Z.NO/
905 PM EST Sun Feb 11 2018

The Flood Warning is cancelled for
  The Neshaminy Creek at Langhorne.
* At  8:15 PM Sunday the stage was 8.7 feet.
* Flood stage is 9.0 feet.
* Fell below flood stage at  7:35 PM Sunday.
* Forecast...The river will continue to fall to 3.2 feet by Tuesday morning.


                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      

Neshaminy Creek
  Langhorne              9.0    8.71  Sun 8 PM     7.7    Mon 1 AM 
 
&&
 
LAT...LON 4019 7498 4020 7491 4008 7486 4006 7493
                                      

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 10, 11:01 PM EST	Dense Fog Advisory	PHI	Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 2 more	8 hr
Feb 11, 7:53 AM EST	Areal Flood Advisory	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	16 hr
Feb 11, 10:38 AM EST	Areal Flood Advisory	PHI	Bucks, Northampton	14 hr
Feb 11, 10:51 AM EST	Areal Flood Advisory	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	8 hr
Feb 11, 10:57 AM EST	Areal Flood Advisory	PHI	Chester	12 hr
Feb 11, 6:47 PM EST	Dense Fog Advisory	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	8 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.