Alert archive / Pennsylvania / River Flood Warnings in 2020
River Flood Warning 30, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this river flood warning at Aug 4, 2020, 10:10 PM EDT for Lehigh County, Pennsylvania. It was in force for 11 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 4, 2020, 10:10 PM EDT (02:10 UTC)
- Expired
- Aug 5, 2020, 8:40 AM EDT
- In force
- 11 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- Minor
County Lehigh County, PA
The radar
The Philadelphia radar (KDIX), 119 km from the middle of the area, began a volume at 02:12 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 Jordan Creek at Allentown (ALNP1). The gauge peaked at 11.76 ft at Aug 5, 2020, 1:00 AM EDT.
- Action stage
- 6 ft
- Minor stage
- 8 ft
- Moderate stage
- 10 ft
- Major stage
- 11 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 01452000, 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.
821
WGUS41 KPHI 050210
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mt Holly NJ
1010 PM EDT Tue Aug 4 2020
...The National Weather Service in Mount Holly NJ has issued a flood warning for
the following rivers in Pennsylvania...
Jordan Creek At Allentown affecting Lehigh County
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...Do not attempt to drive through flooded areas. The water may be
deeper than you think.
&&
PAC077-050810-
/O.NEW.KPHI.FL.W.0030.200805T0210Z-200805T1700Z/
/ALNP1.1.ER.200805T0119Z.200805T0200Z.200805T1100Z.NO/
1010 PM EDT Tue Aug 4 2020
The National Weather Service in Mount Holly NJ has issued a
* Flood Warning for
The Jordan Creek at Allentown.
* until Wednesday afternoon...Or until the warning is cancelled.
* At 10:00 PM Tuesday the stage was 9.1 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 tomorrow
morning.
* Impact...At 8.0 feet...Village Road in South whitehall is flooded.
&&
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
Jordan Creek
Allentown 8.0 9.08 Tue 10 PM 8.9 Wed 2 AM
&&
LAT...LON 4062 7553 4066 7551 4062 7544 4058 7547
$$4 follow-up statements
866
WGUS81 KPHI 050251
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
1051 PM EDT Tue Aug 4 2020
...The Flood Warning continues for the following rivers in Pennsylvania...
Jordan Creek At Allentown affecting Lehigh County
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...Do not attempt to drive through flooded areas. The water may be
deeper than you think.
&&
PAC077-051250-
/O.CON.KPHI.FL.W.0030.000000T0000Z-200805T1700Z/
/ALNP1.2.ER.200805T0119Z.200805T0400Z.200805T1100Z.NO/
1051 PM EDT Tue Aug 4 2020
The Flood Warning continues for
The Jordan Creek at Allentown.
* At 10:30 PM Tuesday the stage was 9.8 feet.
* Flood stage is 8.0 feet.
* Minor flooding is occurring and Moderate flooding is forecast.
* Forecast...The river will continue rising to near 10.3 feet by after midnight
tonight. The river will fall below flood stage tomorrow morning.
* Impact...At 8.0 feet...Village Road in South whitehall is flooded.
&&
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
Jordan Creek
Allentown 8.0 9.80 Tue 10 PM 10.3 Wed 12 AM
&&
LAT...LON 4062 7553 4066 7551 4062 7544 4058 7547
$$807
WGUS41 KPHI 050317
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mt Holly NJ
1117 PM EDT Tue Aug 4 2020
...Forecast flooding changed from Moderate to Major severity for the following
rivers in Pennsylvania...
Jordan Creek At Allentown affecting Lehigh County
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...Do not attempt to drive through flooded areas. The water may be
deeper than you think.
&&
PAC077-050916-
/O.EXT.KPHI.FL.W.0030.000000T0000Z-200805T2200Z/
/ALNP1.3.ER.200805T0119Z.200805T0400Z.200805T1600Z.NR/
1117 PM EDT Tue Aug 4 2020
...Forecast flooding increased from Moderate to Major severity...
The Flood Warning continues for
The Jordan Creek At Allentown.
* until Wednesday evening...Or until the warning is cancelled.
* At 11:00 PM Tuesday the stage was 10.6 feet.
* Flood stage is 8.0 feet.
* Moderate flooding is occurring and Major flooding is forecast.
* Forecast...The river will continue rising to near 11.2 feet by after midnight
tonight. The river will fall below flood stage early tomorrow afternoon.
* Impact...At 13.0 feet...Seventh Street Bridge is flooded.
&&
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
Jordan Creek
Allentown 8.0 10.56 Tue 11 PM 11.2 Wed 12 AM
&&
LAT...LON 4062 7553 4066 7551 4062 7544 4058 7547
$$161
WGUS81 KPHI 050424
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
1224 AM EDT Wed Aug 5 2020
...The Flood Warning continues for the Jordan Creek at Allentown...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...Do not attempt to drive through flooded areas. The water may be
deeper than you think it is.
&&
PAC077-051423-
/O.CON.KPHI.FL.W.0030.000000T0000Z-200805T2200Z/
/ALNP1.3.ER.200805T0119Z.200805T0500Z.200805T1600Z.NR/
1224 AM EDT Wed Aug 5 2020
The Flood Warning continues for
The Jordan Creek at Allentown.
* At 12:15 AM, the creek level was 11.7 feet.
* Flood stage is 8.0 feet.
* Record flooding is occurring.
* Forecast...The creek will continue rising to near 12.0 feet overnight. The creek
will fall back below flood stage on Wednesday afternoon.
* Impact...At 13.0 feet, the Seventh Street bridge is flooded.
&&
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
Jordan Creek
Allentown 8.0 11.66 Wed 12 AM 12.0 Wed 1 AM
&&
LAT...LON 4062 7553 4066 7551 4062 7544 4058 7547
$$
Iovino752
WGUS81 KPHI 051240
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
840 AM EDT Wed Aug 5 2020
...The Flood Warning is cancelled for the following rivers in
Pennsylvania...
Jordan Creek At Allentown affecting Lehigh County
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...Do not attempt to drive through flooded areas.
The water may be deeper than you think.
&&
PAC077-051310-
/O.CAN.KPHI.FL.W.0030.000000T0000Z-200805T2200Z/
/ALNP1.3.ER.200805T0119Z.200805T0435Z.200805T1053Z.NR/
840 AM EDT Wed Aug 5 2020
The Flood Warning is cancelled for
The Jordan Creek at Allentown.
* At 8:15 AM Wednesday the stage was 7.2 feet.
* Flood stage is 8.0 feet.
* Fell below flood stage at 6:53 AM Wednesday.
* Forecast...The river will continue to fall to 4.7 feet by tomorrow
morning.
* Impact...At 8.0 feet...Village Road in South Whitehall is flooded.
* Flood history...This crest compares to a previous crest of 8.0 feet
on Oct 19 1996.
&&
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
Jordan Creek
Allentown 8.0 7.25 Wed 8 AM Crested and falling
&&
LAT...LON 4062 7553 4066 7551 4062 7544 4058 7547
$$
KruzdloThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 8:22 PM EDT | Areal Flood Warning | PHI | Carbon | 9 hr |
| Aug 4, 9:06 PM EDT | Special Weather Statement | PHI | Northampton | 39 min |
Nearby
River Flood Warnings in Pennsylvania, 2020Every river flood warning in 2020
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.