Alert archive / Pennsylvania / Flash Flood Warnings in 2021
Flash Flood Warning 4, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jun 8, 2021, 12:34 PM EDT for Monroe County, Pennsylvania. It was in force for 2 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
- Jun 8, 2021, 12:34 PM EDT (16:34 UTC)
- Expired
- Jun 8, 2021, 2:55 PM EDT
- In force
- 2 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
County Monroe County, PA
The radar
The Binghamton radar (KBGM), 133 km from the middle of the area, began a volume at 16:33 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, 4.6 hours before the alert went out and 204 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.
496
WGUS51 KPHI 081634
FFWPHI
PAC089-082045-
/O.NEW.KPHI.FF.W.0004.210608T1634Z-210608T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
1234 PM EDT Tue Jun 8 2021
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Northeastern Monroe County in northeastern Pennsylvania...
* Until 445 PM EDT.
* At 1234 PM EDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between
1.5 and 3 inches of rain have fallen. Additional rainfall amounts
of 1 to 3 inches are possible in the warned area. Flash flooding
is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets, and underpasses as well as other
drainage and low lying areas.
* Some locations that will experience flash flooding include...
Mount Pocono, Paradise Valley, Mountainhome, Canadensis, Alpine
Mountain, Henryville, Scotrun, Skytop, Pocono Pines, Long Pond,
and Cresco.
This includes the following highways...
Interstate 80 in Pennsylvania between mile markers 293 and 301.
Interstate 380 in Pennsylvania between mile markers 0 and 5.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 4115 7512 4111 7512 4108 7517 4106 7527
4105 7535 4105 7546 4107 7549 4114 7541
4120 7537 4124 7535 4125 7513 4115 7516
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
Staarmann2 follow-up statements
971
WGUS71 KPHI 081746
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
146 PM EDT Tue Jun 8 2021
PAC089-082045-
/O.CON.KPHI.FF.W.0004.000000T0000Z-210608T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Monroe PA-
146 PM EDT Tue Jun 8 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 PM EDT THIS
AFTERNOON FOR NORTHEASTERN MONROE COUNTY...
At 146 PM EDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between 2
and 5 inches of rain have fallen. Additional rainfall amounts of 0.5
to 1 inch are possible in the warned area. Flash flooding is ongoing
or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets, and underpasses as well as other
drainage and low lying areas.
Some locations that will experience flash flooding include...
Mount Pocono, Paradise Valley, Mountainhome, Canadensis, Alpine
Mountain, Henryville, Scotrun, Skytop, Pocono Pines, Long Pond,
and Cresco.
This includes the following highways...
Interstate 80 in Pennsylvania between mile markers 293 and 301.
Interstate 380 in Pennsylvania between mile markers 0 and 5.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 4115 7512 4111 7512 4108 7517 4106 7527
4105 7535 4105 7546 4107 7549 4114 7541
4120 7537 4124 7535 4125 7513 4115 7516
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
Staarmann275
WGUS71 KPHI 081855
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
255 PM EDT Tue Jun 8 2021
PAC089-081905-
/O.CAN.KPHI.FF.W.0004.000000T0000Z-210608T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Monroe PA-
255 PM EDT Tue Jun 8 2021
...FLASH FLOOD WARNING IS CANCELLED FOR NORTHEASTERN MONROE COUNTY...
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 4115 7512 4111 7512 4108 7517 4106 7527
4105 7535 4105 7546 4107 7549 4114 7541
4120 7537 4124 7535 4125 7513 4115 7516
$$
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, 12:40 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, 1:27 PM EDT | Areal Flood Advisory | PHI | Carbon, Lehigh, Monroe, Northampton | 3 hr |
| 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 |
Nearby
Flash Flood Warnings in Pennsylvania, 2021Every flash flood warning 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.