Alert archive / Pennsylvania / River Flood Warnings in 2011
River Flood Warning 167, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this river flood warning at Sep 7, 2011, 9:48 AM EDT for Lehigh County, Northampton County, Pennsylvania. It took effect at Sep 7, 2011, 10:00 AM EDT. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Sep 7, 2011, 9:48 AM EDT (13:48 UTC)
- In effect from
- Sep 7, 2011, 10:00 AM EDT
- Expired
- Sep 7, 2011, 2:30 PM EDT
- In force
- 5 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Flood severity
- Minor
Counties Lehigh County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 120 km from the middle of the area, began a volume at 13:48 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 Lehigh River at Walnutport (WNTP1). The gauge peaked at 8.01 ft at Sep 7, 2011, 10:00 AM EDT.
- Action stage
- 7.5 ft
- Minor stage
- 8 ft
- Moderate stage
- 12 ft
- Major stage
- 16 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 01451000, 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.
656
WGUS41 KPHI 071348
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
948 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...
LEHIGH RIVER AT WALNUTPORT AFFECTING LEHIGH AND NORTHAMPTON COUNTIES
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK.
&&
PAC077-095-071948-
/O.NEW.KPHI.FL.W.0167.110907T1400Z-110907T2000Z/
/WNTP1.1.ER.110907T1400Z.110907T1400Z.110907T1400Z.NO/
948 AM EDT WED SEP 7 2011
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLOOD WARNING FOR
THE LEHIGH RIVER AT WALNUTPORT.
* UNTIL THIS AFTERNOON...OR UNTIL THE WARNING IS CANCELLED.
* AT 9:30 AM WEDNESDAY THE STAGE WAS 8.0 FEET.
* FLOOD STAGE IS 8.0 FEET.
* MINOR FLOODING IS FORECAST.
* FORECAST...THE RIVER IS EXPECTED TO RISE TO NEAR FLOOD STAGE LATE THIS
MORNING.
* IMPACT...AT 6.0 FEET...MINOR FLOODING BEGINS DOWNSTREAM AT CATASAQUA
AND HOKENDAQUA
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
LEHIGH RIVER
WALNUTPORT 8.0 7.98 WED 9 AM 8.0 WED 10 AM
&&2 follow-up statements
378
WGUS81 KPHI 071451
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
1051 AM EDT WED SEP 7 2011
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN
PENNSYLVANIA...
BRANDYWINE CREEK AT CHADDS FORD AFFECTING CHESTER AND DELAWARE COUNTIES
LEHIGH RIVER AT WALNUTPORT AFFECTING LEHIGH AND NORTHAMPTON COUNTIES
NESHAMINY CREEK AT LANGHORNE AFFECTING BUCKS COUNTY
SCHUYLKILL RIVER AT POTTSTOWN AFFECTING MONTGOMERY COUNTY
SCHUYLKILL RIVER AT PHILADELPHIA AFFECTING PHILADELPHIA AND MONTGOMERY
COUNTIES
SCHUYLKILL RIVER AT NORRISTOWN AFFECTING CHESTER...MONTGOMERY AND
PHILADELPHIA COUNTIES
PERKIOMEN CREEK AT GRATERFORD AFFECTING MONTGOMERY COUNTY
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK.
&&
PAC017-080051-
/O.EXT.KPHI.FL.W.0147.000000T0000Z-110908T0637Z/
/LNGP1.2.ER.110907T0036Z.110907T1800Z.110908T0037Z.NO/
1051 AM EDT WED SEP 7 2011
THE FLOOD WARNING CONTINUES FOR
THE NESHAMINY CREEK AT LANGHORNE.
* AT 10:31 AM WEDNESDAY THE STAGE WAS 10.0 FEET.
* FLOOD STAGE IS 9.0 FEET.
* MINOR FLOODING IS OCCURRING AND MODERATE FLOODING IS FORECAST.
* FORECAST...THE RIVER WILL CONTINUE RISING TO NEAR 10.8 FEET BY THIS
AFTERNOON. THE RIVER WILL FALL BELOW FLOOD STAGE THIS EVENING.
* IMPACT...AT 11.0 FEET...AT THIS LEVEL CONSIDERABLE DAMAGE IS REPORTED
THROUGHOUT THE LOWER NESHAMINY CREEK BASIN
$$
PAC029-045-080050-
/O.EXT.KPHI.FL.W.0159.000000T0000Z-110908T0600Z/
/CDFP1.1.ER.110907T0625Z.110907T1430Z.110908T0000Z.NO/
1051 AM EDT WED SEP 7 2011
THE FLOOD WARNING CONTINUES FOR
THE BRANDYWINE CREEK AT CHADDS FORD.
* AT 10:30 AM WEDNESDAY THE STAGE WAS 10.1 FEET.
* FLOOD STAGE IS 9.0 FEET.
* MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO BELOW FLOOD STAGE BY
THIS EVENING.
* IMPACT...AT 10.0 FEET...THE INTERSECTION OF CREEK ROAD AND ROUTE 926
NEAR POCOPSON FLOODS UPSTREAM OF CHADDS FORD.
$$
PAC077-095-072037-
/O.EXT.KPHI.FL.W.0167.000000T0000Z-110907T2037Z/
/WNTP1.1.ER.110907T1345Z.110907T1431Z.110907T1437Z.NO/
1051 AM EDT WED SEP 7 2011
THE FLOOD WARNING CONTINUES FOR
THE LEHIGH RIVER AT WALNUTPORT.
* AT 10:31 AM WEDNESDAY THE STAGE WAS 8.0 FEET.
* FLOOD STAGE IS 8.0 FEET.
* MINOR FLOODING IS OCCURRING.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO BELOW FLOOD STAGE BY
LATE THIS MORNING.
* IMPACT...AT 6.0 FEET...MINOR FLOODING BEGINS DOWNSTREAM AT CATASAQUA
AND HOKENDAQUA
$$
PAC091-080050-
/O.CON.KPHI.FL.W.0158.000000T0000Z-110908T0400Z/
/GRAP1.2.ER.110907T0318Z.110907T0946Z.110907T2200Z.NO/
1051 AM EDT WED SEP 7 2011
THE FLOOD WARNING CONTINUES FOR
THE PERKIOMEN CREEK AT GRATERFORD.
* AT 10:31 AM WEDNESDAY THE STAGE WAS 12.7 FEET.
* FLOOD STAGE IS 11.0 FEET.
* MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO BELOW FLOOD STAGE BY
THIS EVENING.
* IMPACT...AT 13.0 FEET...SEWAGE TREATMENT PLANT IN SCHWENKSVILLE FLOODED
$$
PAC091-080050-
/O.EXT.KPHI.FL.W.0164.110907T2000Z-110908T1009Z/
/PTNP1.1.ER.110907T2000Z.110908T0000Z.110908T0409Z.NO/
1051 AM EDT WED SEP 7 2011
...FLOOD WARNING NOW IN EFFECT UNTIL THURSDAY MORNING...THE FLOOD
WARNING CONTINUES FOR
THE SCHUYLKILL RIVER AT POTTSTOWN.
* FROM THIS AFTERNOON TO THURSDAY MORNING...OR UNTIL THE WARNING IS
CANCELLED.
* AT 10:30 AM WEDNESDAY THE STAGE WAS 10.8 FEET.
* FLOOD STAGE IS 12.5 FEET.
* MINOR FLOODING IS FORECAST.
* FORECAST...RISE ABOVE FLOOD STAGE BY LATE THIS AFTERNOON AND CONTINUE
TO RISE TO NEAR 13.4 FEET BY THIS EVENING. THE RIVER WILL FALL BELOW
FLOOD STAGE TONIGHT.
* IMPACT...AT 13.0 FEET...PORTIONS OF PA ROUTE 724 ALONG THE
BERKS/CHESTER COUNTY LINE ARE CLOSED DUE TO HIGH WATER, SPECIFICALLY
UNION TOWNSHIP IN BERKS COUNTY AND NORTH COVENTRY TOWNSHIP IN CHESTER
COUNTY.
$$
PAC029-091-101-080050-
/O.CON.KPHI.FL.W.0157.000000T0000Z-000000T0000Z/
/NRSP1.1.ER.110907T0256Z.110907T1800Z.000000T0000Z.NO/
1051 AM EDT WED SEP 7 2011
THE FLOOD WARNING CONTINUES FOR
THE SCHUYLKILL RIVER AT NORRISTOWN.
* AT 9:30 AM WEDNESDAY THE STAGE WAS 15.9 FEET.
* FLOOD STAGE IS 13.0 FEET.
* MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST.
* FORECAST...THE RIVER WILL CONTINUE RISING TO NEAR 16.3 FEET BY THIS
AFTERNOON THEN BEGIN FALLING.
* IMPACT...AT 16.0 FEET...THE UPPER MERION BOATHOUSE STARTS TO FLOOD.
$$
PAC091-101-080050-
/O.EXT.KPHI.FL.W.0160.000000T0000Z-110908T1300Z/
/PADP1.1.ER.110907T0846Z.110907T1800Z.110908T0700Z.NO/
1051 AM EDT WED SEP 7 2011
THE FLOOD WARNING CONTINUES FOR
THE SCHUYLKILL RIVER AT PHILADELPHIA.
* AT 10:00 AM WEDNESDAY THE STAGE WAS 11.8 FEET.
* FLOOD STAGE IS 11.0 FEET.
* MINOR FLOODING IS OCCURRING AND MINOR FLOODING IS FORECAST.
* FORECAST...THE RIVER WILL CONTINUE RISING TO NEAR 11.9 FEET BY THIS
AFTERNOON. THE RIVER WILL FALL BELOW FLOOD STAGE EARLY TOMORROW.
* IMPACT...AT 12.0 FEET...MAIN STREET IN MANAYUNK FLOODS IN THE AREA OF
SHURS LANE.
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
SCHUYLKILL RIVER
POTTSTOWN 12.5 10.76 WED 10 AM 13.4 WED 8 PM
NORRISTOWN 13.0 15.93 WED 9 AM 16.3 WED 2 PM
PHILADELPHIA 11.0 11.77 WED 10 AM 11.9 WED 2 PM
LEHIGH RIVER
WALNUTPORT 8.0 8.01 WED 11 AM CRESTING
BRANDYWINE CREEK
CHADDS FORD 9.0 10.10 WED 10 AM CRESTING
PERKIOMEN CREEK
GRATERFORD 11.0 12.68 WED 11 AM FALLING
NESHAMINY CREEK
LANGHORNE 9.0 9.97 WED 11 AM 10.8 WED 2 PM
&&309
WGUS81 KPHI 071830
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
230 PM EDT WED SEP 7 2011
...THE FLOOD WARNING IS CANCELLED FOR THE FOLLOWING RIVERS IN
PENNSYLVANIA...
LEHIGH RIVER AT WALNUTPORT AFFECTING LEHIGH AND NORTHAMPTON COUNTIES
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK.
&&
PAC077-095-071900-
/O.CAN.KPHI.FL.W.0167.000000T0000Z-110907T2037Z/
/WNTP1.1.ER.110907T1345Z.110907T1431Z.110907T1438Z.NO/
230 PM EDT WED SEP 7 2011
THE FLOOD WARNING IS CANCELLED FOR
THE LEHIGH RIVER AT WALNUTPORT.
* AT 1:30 PM WEDNESDAY THE STAGE WAS 7.7 FEET.
* FLOOD STAGE IS 8.0 FEET.
* FELL BELOW FLOOD STAGE AT 10:38 AM WEDNESDAY.
* FORECAST...THE RIVER WILL CONTINUE TO FALL TO 6.5 FEET BY TOMORROW
MORNING.
* IMPACT...AT 6.0 FEET...MINOR FLOODING BEGINS DOWNSTREAM AT CATASAQUA
AND HOKENDAQUA
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
LEHIGH RIVER
WALNUTPORT 8.0 7.70 WED 1 PM FALLING
&&The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 10:31 PM EDT | Areal Flood Warning | PHI | Berks, Lehigh | 15 hr |
| Sep 6, 11:13 PM EDT | River Flood Warning | PHI | Chester, Montgomery, Philadelphia | 3 days |
| Sep 6, 11:19 PM EDT | River Flood Warning | PHI | Montgomery | 17 hr |
| Sep 7, 12:59 AM EDT | River Flood Warning | PHI | Chester, Delaware | 41 hr |
| Sep 7, 3:40 AM EDT | River Flood Warning | PHI | Montgomery, Philadelphia | 54 hr |
| Sep 7, 3:47 AM EDT | River Flood Warning | PHI | Delaware | 4 hr |
| Sep 7, 4:26 AM EDT | River Flood Warning | PHI | Berks, Montgomery | 6 hr |
| Sep 7, 4:26 AM EDT | River Flood Warning | PHI | Montgomery | 3 days |
| Sep 7, 10:05 AM EDT | River Flood Warning | PHI | Monroe, Northampton | 60 hr |
| Sep 7, 10:05 AM EDT | River Flood Warning | PHI | Northampton | 67 hr |
| Sep 7, 10:05 AM EDT | River Flood Warning | PHI | Bucks | 68 hr |
| Sep 7, 10:05 AM EDT | River Flood Warning | PHI | Bucks | 67 hr |
| Sep 7, 10:05 AM EDT | River Flood Warning | PHI | Bucks | 67 hr |
| Sep 7, 10:05 AM EDT | River Flood Warning | PHI | Bucks | 64 hr |
| Sep 7, 10:05 AM EDT | River Flood Warning | PHI | Bucks | 67 hr |
| Sep 7, 10:05 AM EDT | River Flood Warning | PHI | Bucks | 68 hr |
| Sep 7, 11:48 AM EDT | Coastal Flood Advisory | PHI | Delaware, Philadelphia | 18 hr |
| Sep 7, 1:32 PM EDT | Special Weather Statement | PHI | Berks | 58 min |
| Sep 7, 1:38 PM EDT | Special Weather Statement | PHI | Lebanon | 52 min |
| Sep 7, 1:50 PM EDT | Areal Flood Advisory | PHI | Berks | 17 min |
| Sep 7, 2:05 PM EDT | Flash Flood Warning | PHI | Berks | 4 hr |
| Sep 7, 2:36 PM EDT | Special Weather Statement | PHI | Berks | 54 min |
| Sep 7, 2:39 PM EDT | Special Weather Statement | PHI | Chester | 66 min |
| Sep 7, 3:06 PM EDT | Flash Flood Warning | PHI | Chester | 4 hr |
| Sep 7, 3:33 PM EDT | Flash Flood Warning | PHI | Berks, Chester | 4 hr |
| Sep 7, 3:49 PM EDT | Special Weather Statement | PHI | Berks, Chester | 56 min |
| Sep 7, 4:06 PM EDT | River Flood Warning | PHI | Berks, Montgomery | 41 hr |
| Sep 7, 4:06 PM EDT | River Flood Warning | PHI | Berks | 45 hr |
| Sep 7, 4:09 PM EDT | Special Weather Statement | PHI | Bucks, Delaware, Lehigh, Montgomery, Northampton, Philadelphia | 66 min |
| Sep 7, 5:10 PM EDT | Areal Flood Advisory | PHI | Berks, Bucks, Carbon, Lehigh, Monroe, Montgomery and 1 more | 3 hr |
| Sep 7, 6:07 PM EDT | River Flood Warning | PHI | Chester | 10 hr |
| Sep 7, 7:14 PM EDT | Areal Flood Advisory | PHI | Berks | 65 min |
| Sep 7, 7:21 PM EDT | Areal Flood Warning | PHI | Berks, Chester | 14 hr |
| Sep 7, 7:32 PM EDT | Special Weather Statement | PHI | Berks | 58 min |
| Sep 7, 7:39 PM EDT | Coastal Flood Warning | PHI | Delaware, Philadelphia | 6 hr |
Nearby
River Flood Warnings in Pennsylvania, 2011Every river flood warning in 2011
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.