Alert archive / Pennsylvania / River Flood Warnings in 2012

River Flood Warning 13, NWS Philadelphia/Mount Holly

October 29, 2012Montgomery County, Pennsylvania

NWS Philadelphia/Mount Holly issued this river flood warning at Oct 29, 2012, 11:34 AM EDT for Montgomery County, Pennsylvania. It took effect at Oct 30, 2012, 5:00 AM EDT. It was in force for 50 min.

The area

The counties it named.

The facts

Issued: Oct 29, 2012, 11:34 AM EDT (15:34 UTC)
In effect from: Oct 30, 2012, 5:00 AM EDT
Expired: Oct 30, 2012, 5:50 AM EDT
In force: 50 min
Issued by: NWS Philadelphia/Mount Holly
Flood severity: Minor

County Montgomery County, PA

The radar

The Philadelphia radar (KDIX), 86 km from the middle of the area, began a volume at 15:36 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 Perkiomen Creek at Graterford (GRAP1). The gauge peaked at 8.46 ft at Oct 30, 2012, 12:00 AM EDT.

Action stage: 8 ft
Minor stage: 11 ft
Moderate stage: 13 ft
Major stage: 16 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01473000, 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.

041 
WGUS41 KPHI 291534
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
1134 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... 

  NESHAMINY CREEK AT LANGHORNE AFFECTING BUCKS COUNTY
  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.

&&

PAC017-292134-
/O.NEW.KPHI.FL.W.0012.121030T0955Z-121030T2327Z/
/LNGP1.2.ER.121030T0955Z.121030T1200Z.121030T1727Z.NO/
1134 AM EDT MON OCT 29 2012

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A 

* FLOOD WARNING FOR 
  THE NESHAMINY CREEK AT LANGHORNE.
* FROM LATE TONIGHT TO TUESDAY EVENING...OR UNTIL THE WARNING IS CANCELLED.
* AT 11:15 AM MONDAY THE STAGE WAS 1.1 FEET. 
* FLOOD STAGE IS 9.0 FEET. 
* MODERATE FLOODING IS FORECAST. 
* FORECAST...RISE ABOVE FLOOD STAGE BY EARLY TOMORROW AND CONTINUE TO RISE TO 
  NEAR 10.0 FEET BY TOMORROW MORNING. THE RIVER WILL FALL BELOW FLOOD STAGE BY 
  EARLY TOMORROW AFTERNOON.
* IMPACT...AT 10.0 FEET...AT THIS LEVEL SOME HOMES IN THE AREA OF THE LANGHORNE 
  GAGE ARE EVACUATED

$$

PAC091-292134-
/O.NEW.KPHI.FL.W.0013.121030T1131Z-121030T1930Z/
/GRAP1.1.ER.121030T1131Z.121030T1200Z.121030T1330Z.NO/
1134 AM EDT MON OCT 29 2012

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A 

* FLOOD WARNING FOR 
  THE PERKIOMEN CREEK AT GRATERFORD.
* FROM TUESDAY MORNING TO TUESDAY AFTERNOON...OR UNTIL THE WARNING IS CANCELLED.
* AT 11:15 AM MONDAY THE STAGE WAS 1.5 FEET. 
* FLOOD STAGE IS 11.0 FEET. 
* MINOR FLOODING IS FORECAST. 
* FORECAST...RISE ABOVE FLOOD STAGE BY TOMORROW MORNING AND CONTINUE TO RISE TO 
  NEAR 11.2 FEET BY TOMORROW MORNING. THE RIVER WILL FALL BELOW FLOOD STAGE BY 
  LATE TOMORROW MORNING.
* IMPACT...AT 12.0 FEET...PENITENTIARY BRIDGE IS CLOSED. FLOODING BEGINS IN 
  COLLEGEVILLE. HOUSES ON THE RIGHT BANK IN GRATERFORD TAKE ON WATER

$$

                   FLD     OBSERVED           FORECAST
 LOCATION          STG     STG  DAY TIME      CREST

PERKIOMEN CREEK
  GRATERFORD       11.0    1.55  MON 11 AM     11.2   TUE 8 AM 

NESHAMINY CREEK
  LANGHORNE         9.0    1.06  MON 11 AM     10.0   TUE 8 AM 

&&

3 follow-up statements

941 
WGUS81 KPHI 292029
FLSPHI
FLOOD STATEMENT 
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
429 PM EDT MON OCT 29 2012

...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN PENNSYLVANIA...
 
  NESHAMINY CREEK AT LANGHORNE AFFECTING BUCKS COUNTY 
  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.

&&

PAC017-300629-
/O.EXT.KPHI.FL.W.0012.121030T0300Z-121030T2200Z/
/LNGP1.2.ER.121030T0300Z.121030T1200Z.121030T1600Z.NO/
429 PM EDT MON OCT 29 2012

THE FLOOD WARNING CONTINUES FOR
  THE NESHAMINY CREEK AT LANGHORNE.
* FROM THIS EVENING TO TUESDAY EVENING...OR UNTIL THE WARNING IS CANCELLED.
* AT 4:15 PM MONDAY THE STAGE WAS 2.1 FEET. 
* FLOOD STAGE IS 9.0 FEET. 
* MODERATE FLOODING IS FORECAST.
* FORECAST...RISE ABOVE FLOOD STAGE BY TONIGHT AND CONTINUE TO RISE TO NEAR 10.0
  FEET BY TOMORROW MORNING. THE RIVER WILL FALL BELOW FLOOD STAGE BY EARLY 
  TOMORROW AFTERNOON.
* IMPACT...AT 10.0 FEET...AT THIS LEVEL SOME HOMES IN THE AREA OF THE LANGHORNE 
  GAGE ARE EVACUATED

$$

PAC091-300629-
/O.EXT.KPHI.FL.W.0013.121030T1000Z-121030T1848Z/
/GRAP1.1.ER.121030T1000Z.121030T1100Z.121030T1248Z.NO/
429 PM EDT MON OCT 29 2012

THE FLOOD WARNING CONTINUES FOR
  THE PERKIOMEN CREEK AT GRATERFORD.
* FROM TUESDAY MORNING TO TUESDAY AFTERNOON...OR UNTIL THE WARNING IS CANCELLED.
* AT 3:15 PM MONDAY THE STAGE WAS 2.9 FEET. 
* FLOOD STAGE IS 11.0 FEET. 
* MINOR FLOODING IS FORECAST.
* FORECAST...RISE ABOVE FLOOD STAGE BY TOMORROW MORNING AND CONTINUE TO RISE TO 
  NEAR 11.3 FEET BY TOMORROW MORNING. THE RIVER WILL FALL BELOW FLOOD STAGE BY 
  TOMORROW MORNING.
* IMPACT...AT 12.0 FEET...PENITENTIARY BRIDGE IS CLOSED. FLOODING BEGINS IN 
  COLLEGEVILLE. HOUSES ON THE RIGHT BANK IN GRATERFORD TAKE ON WATER

$$

                   FLD     OBSERVED           FORECAST
 LOCATION          STG    STG  DAY TIME       CREST

PERKIOMEN CREEK
  GRATERFORD       11.0    2.93  MON 3 PM     11.3  TUE 7 AM 

NESHAMINY CREEK
  LANGHORNE         9.0    2.06  MON 4 PM     10.0  TUE 8 AM 

&&

581 
WGUS81 KPHI 300230
FLSPHI
FLOOD STATEMENT 
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
1030 PM EDT MON OCT 29 2012

...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN PENNSYLVANIA...
 
  NESHAMINY CREEK AT LANGHORNE AFFECTING BUCKS COUNTY 
  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.

&&

PAC017-301200-
/O.EXT.KPHI.FL.W.0012.121030T0300Z-121030T1200Z/
/LNGP1.1.ER.121030T0300Z.121030T0300Z.121030T0600Z.NO/
1030 PM EDT MON OCT 29 2012

THE FLOOD WARNING CONTINUES FOR
  THE NESHAMINY CREEK AT LANGHORNE.
* UNTIL TUESDAY MORNING...OR UNTIL THE WARNING IS CANCELLED.
* AT 10:15 PM MONDAY THE STAGE WAS 4.8 FEET. 
* FLOOD STAGE IS 9.0 FEET. 
* FORECAST...THE RIVER IS EXPECTED TO RISE TO NEAR FLOOD STAGE TONIGHT.
* IMPACT...AT 9.0 FEET...FLOOD STAGE REACHED WITH SOME HOMES FLOODED IN LANGHORNE
  TERRACE

$$

PAC091-301230-
/O.EXT.KPHI.FL.W.0013.121030T0900Z-121030T1907Z/
/GRAP1.1.ER.121030T0900Z.121030T1200Z.121030T1307Z.NO/
1030 PM EDT MON OCT 29 2012

THE FLOOD WARNING CONTINUES FOR
  THE PERKIOMEN CREEK AT GRATERFORD.
* FROM LATE TONIGHT TO TUESDAY AFTERNOON...OR UNTIL THE WARNING IS CANCELLED.
* AT 10:15 PM MONDAY THE STAGE WAS 8.4 FEET. 
* FLOOD STAGE IS 11.0 FEET. 
* MINOR FLOODING IS FORECAST.
* FORECAST...RISE ABOVE FLOOD STAGE BY EARLY TOMORROW AND CONTINUE TO RISE TO 
  NEAR 11.3 FEET BY TOMORROW MORNING. THE RIVER WILL FALL BELOW FLOOD STAGE BY 
  LATE TOMORROW MORNING.
* IMPACT...AT 12.0 FEET...PENITENTIARY BRIDGE IS CLOSED. FLOODING BEGINS IN 
  COLLEGEVILLE. HOUSES ON THE RIGHT BANK IN GRATERFORD TAKE ON WATER

$$

                   FLD     OBSERVED           FORECAST
 LOCATION          STG    STG  DAY TIME       CREST

PERKIOMEN CREEK
  GRATERFORD       11.0    8.36  MON 10 PM    11.3    TUE 8 AM 

NESHAMINY CREEK
  LANGHORNE         9.0    4.78  MON 10 PM     9.0    MON 11 PM

&&

113 
WGUS81 KPHI 300950
FLSPHI
FLOOD STATEMENT 
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
550 AM EDT TUE OCT 30 2012

...THE FLOOD WARNING IS CANCELLED FOR THE NESHAMINY CREEK AND FOR
THE PERKIOMEN CREEK...

&&

PAC017-301020-
/O.CAN.KPHI.FL.W.0012.000000T0000Z-121030T1200Z/
/LNGP1.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
550 AM EDT TUE OCT 30 2012

THE FLOOD WARNING IS CANCELLED FOR
  THE NESHAMINY CREEK AT LANGHORNE.
* AT 5:45 AM, THE STAGE WAS 5.1 FEET AND FALLING.
* FLOOD STAGE IS 9.0 FEET.
* FORECAST...FLOODING IS NO LONGER ANTICIPATED.


$$

PAC091-301020-
/O.CAN.KPHI.FL.W.0013.000000T0000Z-121030T1907Z/
/GRAP1.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
550 AM EDT TUE OCT 30 2012

THE FLOOD WARNING IS CANCELLED FOR
  THE PERKIOMEN CREEK AT GRATERFORD.
* AT 5:15 AM, THE STAGE WAS 7.5 FEET AND FALLING. 
* FLOOD STAGE IS 11.0 FEET. 
* FORECAST...FLOODING IS NO LONGER ANTICIPATED.


$$

                   FLD     OBSERVED           FORECAST
 LOCATION          STG    STG  DAY TIME       CREST

PERKIOMEN CREEK
  GRATERFORD      11.0    7.5  TUE 515 AM     CRESTED

NESHAMINY CREEK
  LANGHORNE        9.0    5.1  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, 11:29 AM EDT	River Flood Warning	PHI	Delaware	19 hr
Oct 29, 11:34 AM EDT	River Flood Warning	PHI	Bucks	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.