Alert archive / Pennsylvania / River Flood Warnings in 2016

River Flood Warning 6, NWS Philadelphia/Mount Holly

February 25, 2016Montgomery County, Pennsylvania

NWS Philadelphia/Mount Holly issued this river flood warning at Feb 25, 2016, 12:19 AM EST for Montgomery County, Pennsylvania. It took effect at Feb 25, 2016, 2:00 AM EST. It was in force for 12 hr.

The area

The outline as issued.

The facts

Issued
Feb 25, 2016, 12:19 AM EST (05:19 UTC)
In effect from
Feb 25, 2016, 2:00 AM EST
Expired
Feb 25, 2016, 1:51 PM EST
In force
12 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
Minor

County Montgomery County, PA

The radar

The Philadelphia radar (KDIX), 92 km from the middle of the area, began a volume at 05:23 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 11.93 ft at Feb 25, 2016, 5:00 AM EST.

actionminormoderate51002/2502/26
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.

614 
WGUS41 KPHI 250519
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
1219 AM EST THU FEB 25 2016

...The National Weather Service in Mount Holly NJ has issued 
a flood warning for the following rivers in Pennsylvania...

  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.

&&

PAC091-251119-
/O.NEW.KPHI.FL.W.0006.160225T0700Z-160225T1851Z/
/GRAP1.1.ER.160225T0700Z.160225T0900Z.160225T1251Z.NO/
1219 AM EST THU FEB 25 2016

The National Weather Service in Mount Holly NJ has issued a 

* Flood Warning for 
  The Perkiomen Creek at Graterford.
* until this afternoon...Or until the warning is cancelled.
* At 11:46 PM Wednesday the stage was 9.4 feet.
* Flood stage is 11.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage early this morning and continue 
  to rise to near 12.0 feet around daybreak. The river will fall below 
  flood stage by mid morning.


                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG   DAY TIME     CREST

Perkiomen Creek
  Graterford             11.0   9.45  Thu 12 AM    12.0    Thu 4 AM 
 
&&
 
LAT...LON 4012 7547 4011 7542 4024 7542 4024 7549
                                      

$$

Kruzdlo
2 follow-up statements
379 
WGUS81 KPHI 251104
FLSPHI
FLOOD STATEMENT 
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
604 AM EST THU FEB 25 2016

...The Flood Warning continues for the following rivers in Pennsylvania...
  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.

&&

PAC091-251851-
/O.CON.KPHI.FL.W.0006.000000T0000Z-160225T1851Z/
/GRAP1.1.ER.160225T0709Z.160225T1001Z.160225T1251Z.NO/
604 AM EST THU FEB 25 2016

The Flood Warning continues for
  The Perkiomen Creek at Graterford.
* At 5:46 AM Thursday 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 to fall to below flood stage later this 
  morning.


                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Perkiomen Creek
  Graterford             11.0   11.80  Thu 6 AM    Cresting 
 
&&
 
LAT...LON 4012 7547 4011 7542 4024 7542 4024 7549
                                      

$$

Kruzdlo
653 
WGUS81 KPHI 251434
FLSPHI
FLOOD STATEMENT 
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
934 AM EST THU FEB 25 2016

...The Flood Warning is cancelled for the following rivers in Pennsylvania...

  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.

&&

PAC091-251504-
/O.CAN.KPHI.FL.W.0006.000000T0000Z-160225T1851Z/
/GRAP1.1.ER.160225T0709Z.160225T1001Z.160225T1244Z.NO/
934 AM EST THU FEB 25 2016

The Flood Warning is cancelled for
  The Perkiomen Creek at Graterford.
* At  9:15 AM Thursday the stage was 9.4 feet.
* Flood stage is 11.0 feet.
* Fell below flood stage at  7:44 AM Thursday.
* Forecast...The river will continue to fall to 4.1 feet by tomorrow morning.


                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Perkiomen Creek
  Graterford             11.0    9.44  Thu 9 AM     7.0    Thu 1 PM 
 
&&
 
LAT...LON 4012 7547 4011 7542 4024 7542 4024 7549
                                      

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 24, 7:12 PM ESTSevere Thunderstorm WarningPHIChester, Delaware33 min
Feb 24, 7:21 PM ESTAreal Flood AdvisoryPHIChester4 hr
Feb 24, 7:35 PM ESTAreal Flood AdvisoryPHICarbon, Monroe6 hr
Feb 24, 7:39 PM ESTSevere Thunderstorm WarningPHIBerks, Chester36 min
Feb 24, 8:13 PM ESTSpecial Weather StatementPHIChester, Montgomery62 min
Feb 24, 8:23 PM ESTSpecial Weather StatementPHILehigh, Monroe, Northampton67 min
Feb 24, 8:42 PM ESTAreal Flood AdvisoryPHIBucks, Chester, Delaware, Lehigh, Monroe, Montgomery and 2 more4 hr
Feb 24, 8:47 PM ESTSevere Thunderstorm WarningPHIChester43 min
Feb 24, 9:18 PM ESTAreal Flood AdvisoryPHIBucks4 hr
Feb 24, 9:40 PM ESTSevere Thunderstorm WarningPHIBucks, Delaware, Montgomery, Philadelphia35 min
Feb 24, 9:44 PM ESTAreal Flood WarningPHIBerks, Chester, Montgomery10 hr
Feb 24, 9:55 PM ESTFlash Flood WarningPHIBucks, Lehigh, Monroe, Northampton4 hr
Feb 24, 10:05 PM ESTFlash Flood WarningPHIBucks, Chester, Delaware, Montgomery, Philadelphia4 hr
Feb 24, 10:11 PM ESTRiver Flood WarningPHIChester20 hr
Feb 24, 10:32 PM ESTFlash Flood WarningPHIBucks4 hr
Feb 24, 11:03 PM ESTSevere Thunderstorm WarningPHIBucks42 min
Feb 25, 12:28 AM ESTRiver Flood WarningPHIChester, Delaware18 hr
Feb 25, 12:37 AM ESTRiver Flood WarningPHIChester, Montgomery, Philadelphia28 hr
Feb 25, 1:55 AM ESTAreal Flood WarningPHIBucks, Lehigh, Monroe, Northampton6 hr
Feb 25, 2:04 AM ESTAreal Flood WarningPHIBucks, Delaware, Montgomery, Philadelphia4 hr
Feb 25, 2:07 AM ESTRiver Flood WarningPHIBerks, Montgomery8 hr
Feb 25, 2:22 AM ESTAreal Flood WarningPHIBucks8 hr
Feb 25, 7:41 AM ESTAreal Flood WarningPHIBerks, Chester, Montgomery6 hr
Feb 25, 7:51 AM ESTAreal Flood WarningPHIBucks, Lehigh, Monroe, Northampton6 hr

Nearby

River Flood Warnings in Pennsylvania, 2016Every river flood warning in 2016

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.