Alert archive / Pennsylvania / River Flood Warnings in 2012

River Flood Warning 11, NWS Philadelphia/Mount Holly

October 29, 2012Delaware County, Pennsylvania

NWS Philadelphia/Mount Holly issued this river flood warning at Oct 29, 2012, 11:29 AM EDT for Delaware County, Pennsylvania. It took effect at Oct 29, 2012, 4:26 PM EDT. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued: Oct 29, 2012, 11:29 AM EDT (15:29 UTC)
In effect from: Oct 29, 2012, 4:26 PM EDT
Expired: Oct 30, 2012, 6:07 AM EDT
In force: 14 hr
Issued by: NWS Philadelphia/Mount Holly
Flood severity: Major

County Delaware County, PA

The radar

The Philadelphia radar (KDIX), 84 km from the middle of the area, began a volume at 15:30 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 10.30 ft at Oct 29, 2012, 8:00 PM 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.

The text

As transmitted, in the capitals the NWS used until 2016.

719 
WGUS41 KPHI 291529
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
1129 AM EDT MON OCT 29 2012

...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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

PAC045-292129-
/O.NEW.KPHI.FL.W.0011.121029T2102Z-121030T1852Z/
/CHSP1.3.ER.121029T2102Z.121030T0500Z.121030T1252Z.NO/
1129 AM EDT MON OCT 29 2012

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A 

* FLOOD WARNING FOR 
  THE CHESTER CREEK NEAR CHESTER.
* FROM THIS AFTERNOON TO TUESDAY AFTERNOON...OR UNTIL THE WARNING IS CANCELLED.
* AT 11:15 AM MONDAY THE STAGE WAS 4.8 FEET. 
* FLOOD STAGE IS 8.0 FEET.
* MAJOR FLOODING IS FORECAST.
* FORECAST...RISE ABOVE FLOOD STAGE BY LATE THIS AFTERNOON AND CONTINUE TO RISE 
  TO NEAR 14.4 FEET BY AFTER MIDNIGHT TONIGHT. THE RIVER WILL FALL BELOW FLOOD 
  STAGE BY TOMORROW MORNING.


$$

                   FLD     OBSERVED           FORECAST
 LOCATION          STG    STG  DAY TIME       CREST

CHESTER CREEK
  CHESTER          8.0    4.78  MON 11 AM   14.4    TUE 1 AM 

&&

4 follow-up statements

979 
WGUS81 KPHI 292026
FLSPHI
FLOOD STATEMENT 
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
426 PM EDT MON OCT 29 2012

...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.

&&

PAC045-300626-
/O.EXT.KPHI.FL.W.0011.121029T2026Z-121030T1852Z/
/CHSP1.3.ER.121029T1955Z.121030T0500Z.121030T1252Z.NO/
426 PM EDT MON OCT 29 2012

THE FLOOD WARNING CONTINUES FOR
  THE CHESTER CREEK NEAR CHESTER.
* UNTIL TUESDAY AFTERNOON...OR UNTIL THE WARNING IS CANCELLED.
* AT 4:15 PM MONDAY THE STAGE WAS 8.3 FEET. 
* FLOOD STAGE IS 8.0 FEET.
* MINOR FLOODING IS OCCURRING AND MAJOR FLOODING IS FORECAST. 
* FORECAST...THE RIVER WILL CONTINUE RISING TO NEAR 14.4 FEET BY AFTER MIDNIGHT 
  TONIGHT. THE RIVER WILL FALL BELOW FLOOD STAGE TOMORROW MORNING.

$$

                   FLD     OBSERVED           FORECAST
 LOCATION          STG    STG  DAY TIME       CREST

CHESTER CREEK
  CHESTER          8.0    8.26  MON 4 PM      14.4   TUE 1 AM 

&&

578 
WGUS41 KPHI 300226
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
1026 PM EDT MON OCT 29 2012

  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.

&&

PAC045-300826-
/O.EXT.KPHI.FL.W.0011.000000T0000Z-121030T1019Z/
/CHSP1.2.ER.121029T1955Z.121030T0031Z.121030T0419Z.NO/
1026 PM EDT MON OCT 29 2012

THE FLOOD WARNING CONTINUES FOR 
  THE CHESTER CREEK NEAR CHESTER.
* UNTIL TUESDAY MORNING...OR UNTIL THE WARNING IS CANCELLED.
* AT 9:45 PM MONDAY THE STAGE WAS 9.5 FEET. 
* FLOOD STAGE IS 8.0 FEET. 
* MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO BELOW FLOOD STAGE BY AFTER 
  MIDNIGHT TONIGHT.
* 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    9.51  MON 10 PM    8.6    MON 11 PM

&&

565 
WGUS81 KPHI 300737
FLSPHI
FLOOD STATEMENT 
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
337 AM EDT TUE OCT 30 2012

...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.

&&

PAC045-301658-
/O.EXT.KPHI.FL.W.0011.000000T0000Z-121030T1658Z/
/CHSP1.2.ER.121029T1955Z.121030T0031Z.121030T1058Z.NO/
337 AM EDT TUE OCT 30 2012

...FLOOD WARNING EXTENDED UNTIL THIS AFTERNOON...THE FLOOD WARNING CONTINUES FOR
  THE CHESTER CREEK NEAR CHESTER.
* UNTIL THIS AFTERNOON...OR UNTIL THE WARNING IS CANCELLED.
* AT 2:46 AM TUESDAY THE STAGE WAS 9.2 FEET. 
* FLOOD STAGE IS 8.0 FEET.
* MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST. 
* FORECAST...THE RIVER WILL CONTINUE RISING TO NEAR 9.3 FEET BY EARLY 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    9.19  TUE 3 AM      9.3  TUE 4 AM 

&&

837 
WGUS81 KPHI 301007
FLSPHI
FLOOD STATEMENT 
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
607 AM EDT TUE OCT 30 2012

...THE FLOOD WARNING IS CANCELLED FOR THE CHESTER CREEK...

&&

PAC045-301037-
/O.CAN.KPHI.FL.W.0011.000000T0000Z-121030T1658Z/
/CHSP1.2.ER.121029T1955Z.121030T0031Z.121030T0826Z.NO/
607 AM EDT TUE OCT 30 2012

THE FLOOD WARNING IS CANCELLED FOR
  THE CHESTER CREEK NEAR CHESTER.
* AT 5:45 AM, THE STAGE WAS 7.4 FEET AND FALLING. 
* FLOOD STAGE IS 8.0 FEET. 
* THE CREEK FELL BELOW FLOOD STAGE NEAR CHESTER AT 4:26 AM.
* FORECAST...THE CREEK LEVEL WILL CONTINUE TO FALL.

$$

                   FLD     OBSERVED           FORECAST
 LOCATION          STG    STG  DAY TIME       CREST

CHESTER CREEK
  CHESTER          8.0    7.4  TUE 545 AM     CRESTED

&&

IOVINO

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 29, 7:40 AM EDT	Areal Flood Warning	PHI	Chester, Delaware, Montgomery, Philadelphia	23 hr
Oct 29, 11:15 AM EDT	River Flood Warning	PHI	Chester, Delaware	33 hr
Oct 29, 11:21 AM EDT	River Flood Warning	PHI	Chester	21 hr
Oct 29, 11:34 AM EDT	River Flood Warning	PHI	Bucks	18 hr
Oct 29, 11:34 AM EDT	River Flood Warning	PHI	Montgomery	18 hr
Oct 29, 4:28 PM EDT	Special Weather Statement	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	2 hr
Oct 29, 4:48 PM EDT	Areal Flood Warning	PHI	Berks	14 hr

Nearby

River Flood Warnings in Pennsylvania, 2012 Every river flood warning in 2012

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.