Alert archive / Pennsylvania / River Flood Warnings in 2018
River Flood Warning 99, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this river flood warning at Dec 21, 2018, 8:51 AM EST for Bucks County, Pennsylvania. It took effect at Dec 21, 2018, 11:27 AM EST. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Dec 21, 2018, 8:51 AM EST (13:51 UTC)
- In effect from
- Dec 21, 2018, 11:27 AM EST
- Expired
- Dec 21, 2018, 2:46 PM EST
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- Minor
County Bucks County, PA
The radar
The Philadelphia radar (KDIX), 49 km from the middle of the area, began a volume at 13:50 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 Neshaminy Creek near Langhorne (LNGP1). The gauge peaked at 8.71 ft at Dec 21, 2018, 11:00 AM EST.
- Action stage
- 8 ft
- Minor stage
- 9 ft
- Moderate stage
- 12 ft
- Major stage
- 14 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 01465500, 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.
593
WGUS41 KPHI 211351
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mt Holly NJ
851 AM EST Fri Dec 21 2018
...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
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...Do not attempt to drive through flooded areas.
The water may be deeper than you think.
&&
PAC017-211951-
/O.NEW.KPHI.FL.W.0099.181221T1627Z-181222T0300Z/
/LNGP1.1.ER.181221T1627Z.181221T1800Z.181221T2100Z.NO/
851 AM EST Fri Dec 21 2018
The National Weather Service in Mount Holly NJ has issued a
* Flood Warning for
The Neshaminy Creek at Langhorne.
* until this evening...or until the warning is cancelled.
* At 8:39 AM Friday the stage was 8.1 feet.
* Flood stage is 9.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage this morning and continue
to rise to near 9.5 feet early this afternoon. The river will
fall below flood stage late this afternoon.
* Impact...At 9.0 feet...Flooding begins on Bridle Drive in
Middletown Township.
* Flood history...This crest compares to a previous crest of 9.7
feet on Mar 7 2011.
&&
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
Neshaminy Creek
Langhorne 9.0 8.09 Fri 9 AM 9.5 Fri 1 PM
&&
LAT...LON 4019 7498 4020 7491 4008 7486 4006 7493
$$
Kruzdlo1 follow-up statement
007
WGUS81 KPHI 211946
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
246 PM EST Fri Dec 21 2018
...The Flood Warning is cancelled for the following rivers in
Pennsylvania...
Neshaminy Creek At Langhorne affecting Bucks County
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...Do not attempt to drive through flooded areas.
The water may be deeper than you think.
&&
PAC017-212016-
/O.CAN.KPHI.FL.W.0099.000000T0000Z-181222T0300Z/
/LNGP1.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
246 PM EST Fri Dec 21 2018
The Flood Warning is cancelled for
The Neshaminy Creek at Langhorne.
* At 2:15 PM Friday the stage was 8.3 feet.
* Flood stage is 9.0 feet.
* Forecast...The river crested below flood stage at 8.7 feet.
&&
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
Neshaminy Creek
Langhorne 9.0 8.31 Fri 2 PM Crested and falling
&&
LAT...LON 4019 7498 4020 7491 4008 7486 4006 7493
$$
KruzdloThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 21, 3:44 AM EST | River Flood Warning | PHI | Chester | 9 hr |
| Dec 21, 4:02 AM EST | Areal Flood Warning | PHI | Berks, Chester, Delaware, Montgomery, Philadelphia | 4 hr |
| Dec 21, 4:09 AM EST | Areal Flood Warning | PHI | Bucks, Lehigh, Northampton | 16 hr |
| Dec 21, 4:27 AM EST | Areal Flood Warning | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 8 hr |
| Dec 21, 4:36 AM EST | Areal Flood Warning | PHI | Bucks, Montgomery, Philadelphia | 7 hr |
| Dec 21, 5:10 AM EST | River Flood Warning | PHI | Delaware | 5 hr |
| Dec 21, 5:20 AM EST | River Flood Warning | PHI | Chester, Delaware | 14 hr |
| Dec 21, 8:04 AM EST | Areal Flood Warning | PHI | Berks, Chester, Delaware, Montgomery, Philadelphia | 7 hr |
| Dec 21, 12:15 PM EST | Areal Flood Warning | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 4 hr |
Nearby
River Flood Warnings in Pennsylvania, 2018Every river flood warning in 2018
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.