Alert archive / Pennsylvania / Areal Flood Warnings in 2011

Areal Flood Warning 99, NWS Philadelphia/Mount Holly

September 27, 2011Carbon County, Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this areal flood warning at Sep 27, 2011, 8:16 PM EDT for Carbon County, Monroe County, Pennsylvania. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Sep 27, 2011, 8:16 PM EDT (00:16 UTC)
Expired: Sep 27, 2011, 11:15 PM EDT
In force: 3 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: None

Counties Carbon County, PA, Monroe County, PA

The radar

The Binghamton radar (KBGM), 123 km from the middle of the area, began a volume at 00:19 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 nearest sounding before it

Albany, NY (KALY), launched 00:00Z, 0.3 hours before the alert went out and 218 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1000 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 961 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -15 m²/s²
0-3 km storm-relative helicity: -38 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

322 
WGUS41 KPHI 280016
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
816 PM EDT TUE SEP 27 2011

PAC025-089-280315-
/O.NEW.KPHI.FA.W.0099.110928T0016Z-110928T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CARBON PA-MONROE PA-
816 PM EDT TUE SEP 27 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLOOD WARNING FOR SMALL STREAMS IN...
  NORTH CENTRAL CARBON COUNTY IN NORTHEAST PENNSYLVANIA...
  NORTHWESTERN MONROE COUNTY IN NORTHEAST PENNSYLVANIA...

* UNTIL 1115 PM EDT

* AT 815 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
SHOW SHOWERS AND THUNDERSTORMS PRUDICING HEAVY RAIN OVER THE SAME 
AREAS.  ADDITIONAL RAINFALL OF 1 TO 2 INCHES IS POSSIBLE IN THE 
WARNED AREA. 

A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED.
STREAM RISES WILL BE SLOW AND FLASH FLOODING IS NOT EXPECTED.
HOWEVER...ALL INTERESTED PARTIES SHOULD TAKE NECESSARY PRECAUTIONS
IMMEDIATELY.

LAT...LON 4125 7513 4121 7514 4093 7578 4100 7576
      4101 7575 4112 7573 4114 7570 4113 7564
      4123 7554 4123 7552 4125 7550 4125 7531
      4126 7515

$$

NIERENBERG

1 follow-up statement

339 
WGUS81 KPHI 280235
FLSPHI

FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1035 PM EDT TUE SEP 27 2011

PAC025-089-280315-
/O.CON.KPHI.FA.W.0099.000000T0000Z-110928T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CARBON PA-MONROE PA-
1035 PM EDT TUE SEP 27 2011

...THE FLOOD WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT FOR SMALL
STREAMS IN NORTHWESTERN MONROE AND NORTH CENTRAL CARBON COUNTIES...

AT 1029 PM EDT NO FLOODING HAS BEEN REPORTED AND THIS WARNING WILL 
BE ALLOWED TO EXPIRE WITH NO FURTHER EXTENSION ANTICIPATED. 

THE LEHIGH RIVER AT STODDARTSVILLE IS RISING BUT SHOULD REMAIN 
WITHIN ITS BANKS. STODDARTSVILLE DID RECEIVE JUST UNDER 2.5 INCHES 
OF RAIN THIS PAST EVENING.  

STREAM RISES WILL CONTINUE BUT FLASH FLOODING IS NOT EXPECTED. ALL 
INTERESTED PARTIES SHOULD MONITOR THE SITUATION NEAR THE LEHIGH 
RIVER IN STODDARTSVILLE. 

LAT...LON 4125 7513 4121 7514 4093 7578 4100 7576
      4101 7575 4112 7573 4114 7570 4113 7564
      4123 7554 4123 7552 4125 7550 4125 7531
      4126 7515

$$
DRAG

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 27, 11:53 PM EDT	Coastal Flood Statement	PHI	Delaware, Philadelphia	4 hr
Sep 28, 1:54 AM EDT	Special Weather Statement	PHI	Bucks, Delaware, Lehigh, Monroe, Montgomery, Northampton and 1 more	51 min
Sep 28, 3:56 AM EDT	Flash Flood Watch	PHI	Berks, Carbon, Delaware, Lehigh, Monroe, Northampton and 1 more	39 hr
Sep 28, 4:38 AM EDT	Areal Flood Warning	PHI	Bucks	3 hr
Sep 28, 5:45 AM EDT	Special Weather Statement	PHI	Montgomery	60 min
Sep 28, 10:02 AM EDT	Coastal Flood Statement	PHI	Delaware, Philadelphia	8 hr
Sep 28, 11:15 AM EDT	Special Weather Statement	PHI	Berks	60 min
Sep 28, 12:24 PM EDT	Special Weather Statement	PHI	Lehigh	51 min
Sep 28, 3:20 PM EDT	Special Weather Statement	PHI	Chester, Delaware, Montgomery	55 min
Sep 28, 3:59 PM EDT	Special Weather Statement	PHI	Berks, Chester, Delaware, Montgomery	61 min
Sep 28, 4:21 PM EDT	Special Weather Statement	PHI	Carbon	54 min
Sep 28, 4:33 PM EDT	Areal Flood Advisory	PHI	Berks, Chester, Montgomery	2 hr
Sep 28, 4:36 PM EDT	Flash Flood Warning	PHI	Berks, Chester	3 hr
Sep 28, 4:48 PM EDT	Special Weather Statement	PHI	Northampton	57 min
Sep 28, 4:59 PM EDT	Areal Flood Advisory	PHI	Bucks, Northampton	3 hr
Sep 28, 5:02 PM EDT	Special Weather Statement	PHI	Berks, Lehigh	58 min
Sep 28, 5:12 PM EDT	Special Weather Statement	PHI	Lehigh	63 min
Sep 28, 5:29 PM EDT	Special Weather Statement	PHI	Carbon	61 min
Sep 28, 5:32 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh, Northampton	58 min
Sep 28, 5:42 PM EDT	Areal Flood Advisory	PHI	Berks, Bucks, Carbon, Lehigh, Monroe, Montgomery and 1 more	3 hr
Sep 28, 6:31 PM EDT	Special Weather Statement	PHI	Northampton	59 min
Sep 28, 6:35 PM EDT	Areal Flood Warning	PHI	Bucks	2 hr
Sep 28, 6:41 PM EDT	Flash Flood Warning	PHI	Carbon, Lehigh, Monroe, Northampton	3 hr
Sep 28, 7:44 PM EDT	Areal Flood Warning	PHI	Chester	3 hr

Nearby

Areal Flood Warnings in Pennsylvania, 2011 Every areal 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.