Alert archive / Pennsylvania / Areal Flood Advisories in 2021
Areal Flood Advisory 178, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood advisory at Sep 13, 2021, 8:51 PM EDT for Carbon County, Monroe County, Pennsylvania. It was in force for 108 min.
The area
The outline as issued.
The facts
- Issued
- Sep 13, 2021, 8:51 PM EDT (00:51 UTC)
- Expired
- Sep 13, 2021, 10:39 PM EDT
- In force
- 108 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Carbon County, PA, Monroe County, PA
The radar
The Binghamton radar (KBGM), 129 km from the middle of the area, began a volume at 00:54 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 00:00Z, 0.9 hours before the alert went out and 231 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.
- Mixed-layer CAPE
- 90 J/kg
- Mixed-layer CIN
- -236 J/kg
- Mixed-layer LCL
- 1411 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 139 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
412
WGUS81 KPHI 140051
FLSPHI
Flood Advisory
National Weather Service Mount Holly NJ
851 PM EDT Mon Sep 13 2021
PAC025-089-140400-
/O.NEW.KPHI.FA.Y.0178.210914T0051Z-210914T0400Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Carbon PA-Monroe PA-
851 PM EDT Mon Sep 13 2021
The National Weather Service in Mount Holly has issued a
* Flood Advisory for...
Carbon County in northeastern Pennsylvania...
Monroe County in northeastern Pennsylvania...
* Until midnight EDT.
* At 851 PM EDT, Doppler radar indicated heavy rain due to
thunderstorms. Up to an inch of rain has fallen. Minor flooding is
ongoing or expected to begin shortly in the advisory area.
* Some locations that may experience flooding include...
Lehighton, Mount Pocono, East Stroudsburg, Tobyhanna, Palmerton,
Jim Thorpe, Nesquehoning, Weatherly, Delaware Water Gap, Jonas,
Meckesville, and Sun Valley.
This includes the following highways...
Interstate 80 in Pennsylvania between mile markers 277 and 313.
Interstate 380 in Pennsylvania between mile markers 0 and 13.
Northeast Extension between mile markers 72 and 98.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Be aware of your surroundings and do not drive on flooded roads.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4074 7575 4092 7598 4101 7573 4103 7574
4103 7576 4105 7577 4109 7577 4113 7569
4113 7567 4112 7566 4112 7563 4116 7560
4117 7556 4122 7554 4122 7552 4123 7551
4124 7537 4106 7501 4104 7503
$$
MPS2 follow-up statements
727
WGUS81 KPHI 140207
FLSPHI
Flood Advisory
National Weather Service Mount Holly NJ
1007 PM EDT Mon Sep 13 2021
PAC025-089-140400-
/O.CON.KPHI.FA.Y.0178.000000T0000Z-210914T0400Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Carbon PA-Monroe PA-
1007 PM EDT Mon Sep 13 2021
...FLOOD ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT FOR
CARBON AND MONROE COUNTIES...
At 1007 PM EDT, Although the heavy rain and thunderstorms has moved
out of the advisory area, as much as 1 to 1.5 inches of rain fell.
Minor flooding is ongoing or expected to begin shortly in the
advisory area.
Some locations that may experience flooding include...
Lehighton, Mount Pocono, East Stroudsburg, Tobyhanna, Palmerton,
Jim Thorpe, Nesquehoning, Weatherly, Delaware Water Gap, Jonas,
Meckesville, and Sun Valley.
This includes the following highways...
Interstate 80 in Pennsylvania between mile markers 277 and 314.
Interstate 380 in Pennsylvania between mile markers 0 and 13.
Northeast Extension between mile markers 72 and 97.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Be aware of your surroundings and do not drive on flooded roads.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4074 7575 4092 7598 4101 7573 4103 7574
4103 7576 4105 7577 4109 7577 4113 7569
4113 7567 4112 7566 4112 7563 4116 7560
4117 7556 4122 7554 4122 7552 4123 7551
4124 7537 4106 7501 4104 7503
$$
MPS475
WGUS81 KPHI 140239
FLSPHI
Flood Advisory
National Weather Service Mount Holly NJ
1039 PM EDT Mon Sep 13 2021
PAC025-089-140249-
/O.CAN.KPHI.FA.Y.0178.000000T0000Z-210914T0400Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Carbon PA-Monroe PA-
1039 PM EDT Mon Sep 13 2021
...FLOOD ADVISORY IS CANCELLED FOR CARBON AND MONROE COUNTIES...
Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
LAT...LON 4074 7575 4092 7598 4101 7573 4103 7574
4103 7576 4105 7577 4109 7577 4113 7569
4113 7567 4112 7566 4112 7563 4116 7560
4117 7556 4122 7554 4122 7552 4123 7551
4124 7537 4106 7501 4104 7503
$$
MPSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 13, 8:16 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 44 min |
| Sep 13, 8:41 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Lehigh, Monroe, Northampton | 49 min |
| Sep 13, 9:03 PM EDT | Areal Flood Advisory | PHI | Monroe, Northampton | 109 min |
| Sep 13, 9:12 PM EDT | Flash Flood Warning | PHI | Northampton | 114 min |
| Sep 13, 9:21 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh, Northampton | 38 min |
Nearby
Areal Flood Advisories in Pennsylvania, 2021Every 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.