Alert archive / Pennsylvania / Areal Flood Advisories in 2021

Areal Flood Advisory 14, NWS Philadelphia/Mount Holly

June 4, 2021Warren County, New Jersey; Monroe County, Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this areal flood advisory at Jun 4, 2021, 1:45 PM EDT for Warren County, New Jersey; Monroe County, Northampton County, Pennsylvania. It was in force for 97 min.

The area

The outline as issued.

The facts

Issued: Jun 4, 2021, 1:45 PM EDT (17:45 UTC)
Expired: Jun 4, 2021, 3:22 PM EDT
In force: 97 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Warren County, NJ, Monroe County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 140 km from the middle of the area, began a volume at 17:49 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

Brookhaven, NY (KOKX), launched 12:00Z, 5.8 hours before the alert went out and 214 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: 233 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 526 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 95 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

487 
WGUS81 KPHI 041745
FLSPHI

Flood Advisory
National Weather Service Mount Holly NJ
145 PM EDT Fri Jun 4 2021

NJC041-PAC089-095-041945-
/O.NEW.KPHI.FA.Y.0014.210604T1745Z-210604T1945Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Warren NJ-Monroe PA-Northampton PA-
145 PM EDT Fri Jun 4 2021

The National Weather Service in Mount Holly has issued a

* Flood Advisory for...
  Northwestern Warren County in northwestern New Jersey...
  Northeastern Northampton County in eastern Pennsylvania...
  Southern Monroe County in northeastern Pennsylvania...

* Until 345 PM EDT.

* At 145 PM EDT, Doppler radar and automated rain gauges indicated 
  heavy rain due to thunderstorms. Minor flooding is ongoing or 
  expected to begin shortly in the advisory area. Between 1 and 2 
  inches of rain have fallen. Up to an inch of additional rainfall 
  is possible.

* Flooding of low lying and poor drainage areas is expected.

* Some locations that will experience flooding include...
  East Stroudsburg, Bangor, East Bangor, Delaware Water Gap, 
  Stormville, Saylorsburg, Brodheadsville, McMichael, Gilbert, Sun 
  Valley, and Columbia.

This includes the following highways...
	Interstate 80 in New Jersey between mile markers 0 and 4.
	Interstate 80 in Pennsylvania between mile markers 306 and 314.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 4090 7552 4097 7553 4098 7552 4099 7550
      4100 7551 4101 7507 4087 7510

$$

JEO

1 follow-up statement

314 
WGUS81 KPHI 041922
FLSPHI

Flood Advisory
National Weather Service Mount Holly NJ
322 PM EDT Fri Jun 4 2021

NJC041-PAC089-095-041932-
/O.CAN.KPHI.FA.Y.0014.000000T0000Z-210604T1945Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Warren NJ-Monroe PA-Northampton PA-
322 PM EDT Fri Jun 4 2021

...FLOOD ADVISORY IS CANCELLED FOR NORTHWESTERN WARREN, NORTHEASTERN 
NORTHAMPTON, AND SOUTHERN MONROE COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 4090 7552 4097 7553 4098 7552 4099 7550
      4100 7551 4101 7507 4087 7510

$$

Iovino

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 3, 8:14 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Monmouth, Ocean	19 min
Jun 3, 8:44 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth	30 min
Jun 3, 8:55 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Monmouth	10 min
Jun 4, 1:07 PM EDT	Special Weather Statement	PHI	Sussex	38 min
Jun 4, 1:49 PM EDT	Severe Thunderstorm Warning	PHI	Sussex, Warren	41 min
Jun 4, 2:43 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Middlesex, Morris, Somerset, Sussex, Warren	62 min
Jun 4, 2:49 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Middlesex, Morris, Somerset, Sussex, Warren	70 min
Jun 4, 3:16 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Hunterdon, Mercer, Middlesex, Monmouth and 1 more	98 min
Jun 4, 3:18 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer	42 min
Jun 4, 3:23 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Middlesex, Somerset	67 min
Jun 4, 3:46 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Mercer	44 min
Jun 4, 4:12 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	63 min
Jun 4, 4:20 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester	40 min
Jun 4, 4:22 PM EDT	Special Marine Warning	PHI		53 min
Jun 4, 4:23 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	52 min
Jun 4, 4:30 PM EDT	Areal Flood Advisory	PHI	Middlesex, Monmouth, Ocean	63 min
Jun 4, 5:09 PM EDT	Special Marine Warning	PHI		2 hr
Jun 4, 5:12 PM EDT	Severe Thunderstorm Warning	PHI	Ocean	18 min
Jun 4, 5:32 PM EDT	Special Marine Warning	PHI		58 min
Jun 4, 6:18 PM EDT	Special Weather Statement	PHI	Atlantic	42 min
Jun 4, 6:27 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cape May, Cumberland	48 min
Jun 4, 7:13 PM EDT	Special Marine Warning	PHI		62 min
Jun 4, 1:02 PM EDT	Special Weather Statement	PHI	Lehigh	28 min
Jun 4, 1:29 PM EDT	Areal Flood Advisory	PHI	Berks, Lehigh	2 hr
Jun 4, 2:21 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Lehigh, Montgomery	21 min
Jun 4, 2:24 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery	51 min
Jun 4, 2:27 PM EDT	Severe Thunderstorm Warning	PHI	Berks	48 min
Jun 4, 3:14 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery, Philadelphia	46 min

Nearby

Areal Flood Advisories in Pennsylvania, 2021 Areal Flood Advisories in New Jersey, 2021 Every areal flood advisory in 2021

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.