Alert archive / Pennsylvania / River Flood Warnings in 2013

River Flood Warning 48, NWS Philadelphia/Mount Holly

November 27, 2013Delaware County, Pennsylvania

NWS Philadelphia/Mount Holly issued this river flood warning at Nov 27, 2013, 4:33 AM EST for Delaware County, Pennsylvania. It took effect at Nov 27, 2013, 5:28 AM EST. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Nov 27, 2013, 4:33 AM EST (09:33 UTC)
In effect from
Nov 27, 2013, 5:28 AM EST
Expired
Nov 27, 2013, 9:29 AM EST
In force
4 hr
Issued by
NWS Philadelphia/Mount Holly
Flood severity
Minor

County Delaware County, PA

The radar

The Philadelphia radar (KDIX), 84 km from the middle of the area, began a volume at 09:33 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 Chester Creek near Chester (CHSP1). The gauge peaked at 8.14 ft at Nov 27, 2013, 6:00 AM EST.

actionminormoderate51011/2711/28
Action stage
7 ft
Minor stage
8 ft
Moderate stage
10 ft
Major stage
14 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01477000, 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, in the capitals the NWS used until 2016.

965 
WGUS41 KPHI 270933
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
433 AM EST WED NOV 27 2013

...THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
FLOOD WARNING FORTHE FOLLOWING RIVERS IN PENNSYLVANIA... 

  CHESTER CREEK NEAR CHESTER AFFECTING DELAWARE COUNTY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS.
THE WATER MAY BE DEEPER THAN YOU THINK.

&&

PAC045-271533-
/O.NEW.KPHI.FL.W.0048.131127T1028Z-131128T0026Z/
/CHSP1.1.ER.131127T1028Z.131127T1500Z.131127T1826Z.NO/
433 AM EST WED NOV 27 2013

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A 

* FLOOD WARNING FOR 
  THE CHESTER CREEK NEAR CHESTER.
* UNTIL THIS EVENING...OR UNTIL THE WARNING IS CANCELLED.
* AT 4:15 AM WEDNESDAY THE STAGE WAS 7.2 FEET. 
* FLOOD STAGE IS 8.0 FEET.
* MINOR FLOODING IS FORECAST.
* FORECAST...RISE ABOVE FLOOD STAGE EARLY THIS MORNING AND CONTINUE 
  TO RISE TO NEAR 9.6 FEET BY LATE THIS MORNING. THE RIVER WILL FALL
  BELOW FLOOD STAGE BY THIS AFTERNOON.
* IMPACT...AT 10.5 FEET...FLOOD DAMAGE BEGINS IN THE CITY OF CHESTER.

$$

                   FLD     OBSERVED           FORECAST
 LOCATION          STG    STG   DAY TIME      CREST

CHESTER CREEK
  CHESTER          8.0    7.20  WED 4 AM      9.6    WED 10 AM

&&
1 follow-up statement
795 
WGUS81 KPHI 271429
FLSPHI
FLOOD STATEMENT 
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
929 AM EST WED NOV 27 2013

...THE FLOOD WARNING IS CANCELLED FOR THE FOLLOWING RIVERS IN PENNSYLVANIA...
 
  CHESTER CREEK NEAR CHESTER AFFECTING DELAWARE COUNTY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE WATER MAY BE
DEEPER THAN YOU THINK.

&&

PAC045-271459-
/O.CAN.KPHI.FL.W.0048.000000T0000Z-131128T0026Z/
/CHSP1.1.ER.131127T1018Z.131127T1100Z.131127T1121Z.NO/
929 AM EST WED NOV 27 2013

THE FLOOD WARNING IS CANCELLED FOR
  THE CHESTER CREEK NEAR CHESTER.
* AT 9:15 AM WEDNESDAY THE STAGE WAS 6.5 FEET AND FALLING. 
* FLOOD STAGE IS 8.0 FEET. 
* FELL BELOW FLOOD STAGE AT 6:20 AM WEDNESDAY.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO 3.4 FEET BY TOMORROW MORNING.
* IMPACT...AT 10.5 FEET...FLOOD DAMAGE BEGINS IN THE CITY OF CHESTER.

$$

                   FLD     OBSERVED           FORECAST
 LOCATION          STG    STG  DAY TIME       CREST

CHESTER CREEK
  CHESTER          8.0    6.53  WED 9 AM     5.8    WED 10 AM

&&

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 27, 3:46 AM ESTAreal Flood AdvisoryPHIBucks, Chester, Delaware, Montgomery, Philadelphia6 hr
Nov 27, 5:57 AM ESTAreal Flood AdvisoryPHIBerks, Carbon, Lehigh, Monroe, Northampton4 hr
Nov 27, 6:08 AM ESTRiver Flood WarningPHIChester4 hr
Nov 27, 6:18 AM ESTAreal Flood WarningPHIMontgomery, Philadelphia6 hr

Nearby

River Flood Warnings in Pennsylvania, 2013Every river flood warning in 2013

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.