River Flood Warning 161, NWS Philadelphia/Mount Holly

Issued

Sep 7, 2011, 3:47 AM EDT (07:47 UTC)

Expired

Sep 7, 2011, 7:54 AM EDT

In force

4 hr

Issued by

NWS Philadelphia/Mount Holly

Flood severity

Minor

County Delaware County, PA

The Philadelphia radar (KDIX), 84 km from the middle of the area, began a volume at 07:49 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.

Written for the forecast point Chester Creek near Chester (CHSP1). The gauge peaked at 9.32 ft at Sep 7, 2011, 5:00 AM EDT.

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.

713 
WGUS41 KPHI 070747
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
347 AM EDT WED SEP 7 2011

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

  CHESTER CREEK NEAR CHESTER AFFECTING DELAWARE COUNTY
...FORECAST FLOODING CHANGED FROM MINOR TO MODERATE SEVERITY FOR THE 
FOLLOWING RIVERS IN PENNSYLVANIA...
  PERKIOMEN CREEK AT GRATERFORD AFFECTING MONTGOMERY COUNTY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

PAC091-071347-
/O.EXT.KPHI.FL.W.0158.000000T0000Z-110907T2345Z/
/GRAP1.2.ER.110907T0318Z.110907T1200Z.110907T1745Z.NO/
347 AM EDT WED SEP 7 2011

...FORECAST FLOODING INCREASED FROM MINOR TO MODERATE SEVERITY...
THE FLOOD WARNING CONTINUES FOR 
  THE PERKIOMEN CREEK AT GRATERFORD.
* UNTIL THIS EVENING...OR UNTIL THE WARNING IS CANCELLED.
* AT  3:30 AM WEDNESDAY THE STAGE WAS 12.7 FEET. 
* FLOOD STAGE IS 11.0 FEET. 
* MINOR FLOODING IS OCCURRING AND MODERATE FLOODING IS FORECAST.
* FORECAST...THE RIVER WILL CONTINUE RISING TO NEAR 13.3 FEET BY THIS 
  MORNING. THE RIVER WILL FALL BELOW FLOOD STAGE THIS AFTERNOON.
* IMPACT...AT 13.5 FEET...HOUSES ON LEFT BANK IN GRATERFORD FLOODED

$$

PAC045-071346-
/O.NEW.KPHI.FL.W.0161.110907T0747Z-110907T2136Z/
/CHSP1.1.ER.110907T0729Z.110907T1000Z.110907T1536Z.NO/
347 AM EDT WED SEP 7 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A 

* FLOOD WARNING FOR 
  THE CHESTER CREEK NEAR CHESTER.
* UNTIL THIS AFTERNOON...OR UNTIL THE WARNING IS CANCELLED.
* AT  3:31 AM WEDNESDAY THE STAGE WAS 8.0 FEET. 
* FLOOD STAGE IS 8.0 FEET. 
* MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST.
* FORECAST...THE RIVER WILL CONTINUE RISING TO NEAR 9.1 FEET BY THIS 
  MORNING. THE RIVER WILL FALL BELOW FLOOD STAGE LATE THIS 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    8.02  WED 4 AM     9.1  WED 6 AM 

PERKIOMEN CREEK
  GRATERFORD       11.0   12.70  WED 3 AM    13.3  WED 8 AM 

&&

382 
WGUS81 KPHI 070855
FLSPHI
FLOOD STATEMENT 
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
455 AM EDT WED SEP 7 2011

...THE FLOOD WARNING CONTINUES 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.

&&

PAC045-071855-
/O.EXT.KPHI.FL.W.0161.000000T0000Z-110908T0004Z/
/CHSP1.2.ER.110907T0729Z.110907T1100Z.110907T1804Z.NO/
455 AM EDT WED SEP 7 2011

THE FLOOD WARNING CONTINUES FOR
  THE CHESTER CREEK NEAR CHESTER.
* AT  4:31 AM WEDNESDAY THE STAGE WAS 9.1 FEET. 
* FLOOD STAGE IS 8.0 FEET. 
* MINOR FLOODING IS OCCURRING AND MODERATE FLOODING IS FORECAST.
* FORECAST...THE RIVER WILL CONTINUE RISING TO NEAR 10.9 FEET BY THIS 
  MORNING. THE RIVER WILL FALL BELOW FLOOD STAGE 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    9.09  WED 5 AM    10.9  WED 7 AM 

&&

633 
WGUS81 KPHI 071154
FLSPHI
FLOOD STATEMENT 
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
754 AM EDT WED SEP 7 2011

...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.

&&

PAC045-071224-
/O.CAN.KPHI.FL.W.0161.000000T0000Z-110908T0004Z/
/CHSP1.1.ER.110907T0729Z.110907T0930Z.110907T1121Z.NO/
754 AM EDT WED SEP 7 2011

THE FLOOD WARNING IS CANCELLED FOR
  THE CHESTER CREEK NEAR CHESTER.
* AT 7:31 AM WEDNESDAY THE STAGE WAS 7.9 FEET. 
* FLOOD STAGE IS 8.0 FEET.
* FELL BELOW FLOOD STAGE AT 7:21 AM WEDNESDAY.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO 4.5 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    7.88  WED 8 AM      CRESTED 

&&

River Flood Warnings in Pennsylvania, 2011Every river flood warning in 2011

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.