Alert archive / Pennsylvania / Areal Flood Advisories in 2021
Areal Flood Advisory 21, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood advisory at Jun 8, 2021, 1:27 PM EDT for 4 counties in Pennsylvania; Warren County, New Jersey. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 8, 2021, 1:27 PM EDT (17:27 UTC)
- Expired
- Jun 8, 2021, 4:10 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Warren County, NJ, Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 119 km from the middle of the area, began a volume at 17:28 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, 5.5 hours before the alert went out and 201 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
- 740 J/kg
- Mixed-layer CIN
- -106 J/kg
- Mixed-layer LCL
- 1004 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
833
WGUS81 KPHI 081727
FLSPHI
Flood Advisory
National Weather Service Mount Holly NJ
127 PM EDT Tue Jun 8 2021
NJC041-PAC025-077-089-095-082130-
/O.NEW.KPHI.FA.Y.0021.210608T1727Z-210608T2130Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Warren NJ-Carbon PA-Lehigh PA-Monroe PA-Northampton PA-
127 PM EDT Tue Jun 8 2021
The National Weather Service in Mount Holly has issued a
* Flood Advisory for...
Warren County in northwestern New Jersey...
Lehigh County in eastern Pennsylvania...
Northampton County in eastern Pennsylvania...
Southeastern Carbon County in northeastern Pennsylvania...
Central Monroe County in northeastern Pennsylvania...
* Until 530 PM EDT.
* At 127 PM EDT, Doppler radar indicated heavy rain due to
thunderstorms. Minor flooding is ongoing or expected to begin
shortly in the advisory area. Between 1 and 1.5 inches of rain
have fallen.
* Some locations that may experience flooding include...
Allentown, Easton, Lehighton, Bethlehem, Forks, Emmaus,
Northampton, East Stroudsburg, Hackettstown, Wilson, Washington,
and Blairstown.
This includes the following highways...
Interstate 78 in Pennsylvania between mile markers 45 and 76.
Interstate 78 in New Jersey between mile markers 0 and 7.
Interstate 80 in New Jersey between mile markers 0 and 22.
Interstate 80 in Pennsylvania between mile markers 299 and 314.
Northeast Extension between mile markers 49 and 89.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4063 7582 4074 7576 4074 7577 4102 7565
4109 7522 4114 7515 4114 7508 4108 7503
4109 7496 4091 7477 4088 7481 4082 7484
4078 7490 4071 7497 4063 7515 4059 7518
4061 7520 4058 7527 4050 7538 4048 7558
$$
Iovino2 follow-up statements
894
WGUS81 KPHI 081909
FLSPHI
Flood Advisory
National Weather Service Mount Holly NJ
309 PM EDT Tue Jun 8 2021
PAC025-089-081919-
/O.CAN.KPHI.FA.Y.0021.000000T0000Z-210608T2130Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Carbon PA-Monroe PA-
309 PM EDT Tue Jun 8 2021
...FLOOD ADVISORY IS CANCELLED FOR SOUTHEASTERN CARBON AND CENTRAL
MONROE COUNTIES...
Flooding is no longer expected to pose a threat. Please continue to
heed remaining road closures.
LAT...LON 4063 7582 4073 7576 4075 7573 4086 7529
4093 7521 4096 7513 4099 7513 4103 7504
4109 7497 4091 7477 4088 7481 4082 7484
4078 7490 4071 7497 4063 7515 4059 7518
4061 7520 4058 7527 4050 7539 4048 7558
$$
NJC041-PAC077-095-082130-
/O.CON.KPHI.FA.Y.0021.000000T0000Z-210608T2130Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Warren NJ-Lehigh PA-Northampton PA-
309 PM EDT Tue Jun 8 2021
...FLOOD ADVISORY REMAINS IN EFFECT UNTIL 530 PM EDT THIS AFTERNOON
FOR WARREN, LEHIGH, AND NORTHAMPTON COUNTIES...
At 309 PM EDT, Doppler radar indicated heavy rain due to
thunderstorms. Minor flooding is ongoing or expected to begin
shortly in the advisory area. Between 1 and 1.5 inches of rain have
fallen.
Some locations that will experience flooding include...
Allentown, Easton, Bethlehem, Forks, Emmaus, Northampton,
Hackettstown, Wilson, Washington, Blairstown, Hellertown, and
Nazareth.
This includes the following highways...
Interstate 78 in Pennsylvania between mile markers 45 and 76.
Interstate 78 in New Jersey between mile markers 0 and 7.
Interstate 80 in New Jersey between mile markers 1 and 22.
Northeast Extension between mile markers 49 and 71.
LAT...LON 4063 7582 4073 7576 4075 7573 4086 7529
4093 7521 4096 7513 4099 7513 4103 7504
4109 7497 4091 7477 4088 7481 4082 7484
4078 7490 4071 7497 4063 7515 4059 7518
4061 7520 4058 7527 4050 7539 4048 7558
$$
Davis881
WGUS81 KPHI 082010
FLSPHI
Flood Advisory
National Weather Service Mount Holly NJ
410 PM EDT Tue Jun 8 2021
NJC041-PAC077-095-082020-
/O.CAN.KPHI.FA.Y.0021.000000T0000Z-210608T2130Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Warren NJ-Lehigh PA-Northampton PA-
410 PM EDT Tue Jun 8 2021
...FLOOD ADVISORY IS CANCELLED FOR WARREN, LEHIGH, AND NORTHAMPTON
COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 4063 7582 4073 7576 4075 7573 4086 7529
4093 7521 4096 7513 4099 7513 4103 7504
4109 7497 4091 7477 4088 7481 4082 7484
4078 7490 4071 7497 4063 7515 4059 7518
4061 7520 4058 7527 4050 7539 4048 7558
$$
DavisThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 11:54 AM EDT | Areal Flood Advisory | PHI | Monroe | 2 hr |
| Jun 8, 12:34 PM EDT | Flash Flood Warning | PHI | Monroe | 2 hr |
| Jun 8, 12:40 PM EDT | Special Weather Statement | PHI | Monroe | 35 min |
| Jun 8, 1:09 PM EDT | Special Weather Statement | PHI | Monroe | 21 min |
| Jun 8, 1:17 PM EDT | Special Weather Statement | PHI | Chester | 13 min |
| Jun 8, 1:18 PM EDT | Areal Flood Advisory | PHI | Chester, Delaware, Montgomery, Philadelphia | 3 hr |
| Jun 8, 1:24 PM EDT | Special Weather Statement | PHI | Delaware | 21 min |
| Jun 8, 1:35 PM EDT | Flash Flood Warning | PHI | Chester, Delaware, Montgomery | 5 hr |
| Jun 8, 2:07 PM EDT | Special Weather Statement | PHI | Bucks | 23 min |
| Jun 8, 2:19 PM EDT | Areal Flood Advisory | PHI | Bucks | 2 hr |
| Jun 8, 2:43 PM EDT | Special Weather Statement | PHI | Montgomery | 32 min |
| Jun 8, 3:15 PM EDT | Special Weather Statement | PHI | Chester | 30 min |
| Jun 8, 3:21 PM EDT | Flash Flood Warning | PHI | Chester, Montgomery | 3 hr |
| Jun 8, 3:43 PM EDT | Special Weather Statement | PHI | Chester | 32 min |
| Jun 8, 4:20 PM EDT | Special Weather Statement | PHI | Chester | 25 min |
| Jun 8, 4:25 PM EDT | River Flood Warning | PHI | Chester | 11 hr |
| Jun 8, 6:21 PM EDT | Areal Flood Warning | PHI | Chester, Delaware | 15 hr |
| Jun 8, 7:14 PM EDT | River Flood Warning | PHI | Chester, Delaware | 18 hr |
| Jun 8, 1:49 PM EDT | Special Weather Statement | PHI | Warren | 26 min |
| Jun 8, 1:54 PM EDT | Areal Flood Advisory | PHI | Morris, Sussex | 95 min |
| Jun 8, 2:29 PM EDT | Special Weather Statement | PHI | Morris | 16 min |
| Jun 8, 2:48 PM EDT | Special Weather Statement | PHI | Hunterdon, Morris, Somerset | 27 min |
| Jun 8, 3:13 PM EDT | Special Weather Statement | PHI | Hunterdon, Somerset | 32 min |
| Jun 8, 3:14 PM EDT | Areal Flood Advisory | PHI | Middlesex, Somerset | 74 min |
| Jun 8, 4:12 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 48 min |
| Jun 8, 4:14 PM EDT | Special Marine Warning | PHI | 91 min | |
| Jun 8, 4:44 PM EDT | Special Weather Statement | PHI | Salem | 31 min |
| Jun 8, 4:47 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 43 min |
| Jun 8, 4:54 PM EDT | Special Marine Warning | PHI | 96 min | |
| Jun 8, 4:56 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Camden, Gloucester | 49 min |
| Jun 8, 4:58 PM EDT | Severe Thunderstorm Warning | PHI | Ocean | 47 min |
| Jun 8, 5:30 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Salem | 45 min |
| Jun 8, 5:43 PM EDT | Special Weather Statement | PHI | Ocean | 32 min |
| Jun 8, 6:01 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Ocean | 44 min |
| Jun 8, 6:22 PM EDT | Special Marine Warning | PHI | 83 min | |
| Jun 8, 7:39 PM EDT | Special Marine Warning | PHI | 66 min | |
| Jun 8, 7:52 PM EDT | Special Weather Statement | PHI | Cape May | 38 min |
Nearby
Areal Flood Advisories in Pennsylvania, 2021Areal Flood Advisories in New Jersey, 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.