Alert archive / Pennsylvania / Areal Flood Warnings in 2021
Areal Flood Warning 31, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood warning at Sep 1, 2021, 4:04 PM EDT for Warren County, New Jersey; Carbon County, Monroe County, Northampton County, Pennsylvania. It was in force for 24 hr. 19 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Sep 1, 2021, 4:04 PM EDT (20:04 UTC)
- Expired
- Sep 2, 2021, 3:57 PM EDT
- In force
- 24 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Warren County, NJ, Carbon County, PA, Monroe County, PA, Northampton County, PA
The radar
The Binghamton radar (KBGM), 136 km from the middle of the area, began a volume at 20:07 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 1, 4:11 PM EDT | FLASH FLOOD | 1 E New Mahoning, PA | MAHONING CREEK OVERFLOWED ITS BANKS, FORCING THE CLOSURE OF COUNTRY CLUB ROAD. TIME BASED ON DISPATCH REPORT. |
| Sep 1, 6:35 PM EDT | FLOOD | 2 Wnw Stormville, PA | FLOODING ON BUSINESS ROUTE 209, SOUTH COURLAND STREET, HAMILTON EAST ROAD, MAIN STREET, BROWN STREET, AND MILFORD ROAD IN THE STORMVILLE AND SNYDERSVILLE AREAS. TIME BASED ON DISPATCH REPORT. |
| Sep 1, 7:29 PM EDT | FLOOD | 1 Sse Tannersville, PA | FLOODING CLOSED STATE HIGHWAY 611 NEAR TANNERSVILLE. TIME BASED ON DISPATCH REPORT. |
| Sep 1, 7:30 PM EDT | FLOOD | Lehighton, PA | THE GAUGE ON THE LEHIGH RIVER AT LEHIGHTON (LHTP1) REACHED FLOOD STAGE AT 730 PM 9/1, CRESTING AT 14.11 FEET (MAJOR FLOODING) AT 1245 AM 9/2. |
| Sep 1, 7:40 PM EDT | FLASH FLOOD | 2 N Arlington Heights, PA | FLOODING CLOSED STATE HIGHWAY 191 NORTH OF STROUDSBURG. TIME BASED ON DISPATCH REPORT. |
| Sep 1, 7:43 PM EDT | FLASH FLOOD | 2 Nnw East Stroudsburg, PA | SEVERAL ROAD CLOSURES NEAR EAST STROUDSBURG FROM FLOODING, INCLUDING STATE ROUTE 447. TIME BASED ON DISPATCH REPORT. |
| Sep 1, 7:51 PM EDT | FLOOD | 1 Ssw Lower Towamensing, PA | LOWER SMITH GAP ROAD CLOSED FROM FLOODING. TIME BASED ON DISPATCH REPORT. |
| Sep 1, 8:05 PM EDT | FLOOD | 1 Ese Sciota, PA | FLOODING CLOSED U.S. HIGHWAY 209 NEAR THE STATE HIGHWAY 33 INTERCHANGE. TIME BASED ON DISPATCH REPORT. |
| Sep 1, 8:30 PM EDT | FLOOD | 1 Sw Blakeslee, PA | THE GAUGE ON TOBYHANNA CREEK AT BLAKESLEE (TBYP1) REACHED FLOOD STAGE AT 830 PM 9/1, CRESTING AT 11.53 FEET (MODERATE FLOODING) AT 315 AM 9/2. |
| Sep 1, 8:30 PM EDT | HEAVY RAIN 5.2 | Tobyhanna, PA | |
| Sep 1, 8:40 PM EDT | FLOOD | 2 Ne Sciota, PA | FLOODING OF MIDDLE EASTON BELMONT PIKE AND RIMROCK ROAD. ROADS CLOSED. TIME BASED ON DISPATCH REPORT. |
| Sep 1, 9:15 PM EDT | FLOOD | 2 Ese Hernyville, PA | THE GAUGE ON BRODHEAD CREEK AT ANALOMINK (ALKP1) REACHED FLOOD STAGE AT 915 PM 9/1, CRESTING AT 9.17 FEET (MODERATE FLOODING) AT 1145 PM 9/1. |
| Sep 1, 10:14 PM EDT | FLASH FLOOD | Delaware Water Gap, PA | FLOODING FORCED CLOSURES ON I-80 NEAR THE DELAWARE RIVER. TIME BASED ON DISPATCH REPORT. |
| Sep 1, 10:25 PM EDT | FLOOD | 3 W Echo Lake, PA | STATE ROUTE 402 FLOODED IN MIDDLE SMITHFIELD TOWNSHIP. TIME BASED ON DISPATCH REPORT. |
| Sep 1, 10:30 PM EDT | FLOOD | 2 Nne Echo Lake, PA | THE GAUGE ON BUSH KILL AT SHOEMAKERS (SHOP1) REACHED FLOOD STAGE AT 1030 PM 9/1, CRESTING AT 6.6 FEET (MINOR FLOODING) AT 630 AM 9/2. |
| Sep 1, 10:31 PM EDT | FLOOD | 2 W Stroud Twp, PA | FLOODING OF POCONO CREEK FORCED THE CLOSURE OF SHAFERS SCHOOL HOUSE ROAD. TIME BASED ON DISPATCH REPORT. |
| Sep 1, 11:00 PM EDT | FLOOD | Tobyhanna, PA | SOME ROADWAY FLOODING STILL ONGOING IN TOBYHANNA. |
| Sep 1, 11:15 PM EDT | FLOOD | 1 N Delaware Water Gap, PA | THE GAUGE ON BRODHEAD CREEK AT MINISINK HILLS (MNSP1) REACHED FLOOD STAGE AT 1115 PM 9/1, CRESTING AT 11.15 FEET (MINOR FLOODING) AT 130 AM 9/2. |
| Sep 2, 2:30 AM EDT | FLOOD | 1 Ene Palmerton, PA | THE GAUGE ON AQUASHICOLA CREEK AT PALMERTON (PRTP1) REACHED FLOOD STAGE AT 230 AM 9/2, CRESTING AT 8.76 FEET (MINOR FLOODING) AT 530 AM 9/2. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 8.1 hours before the alert went out and 222 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
- 51 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 1274 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 201 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
068
WGUS41 KPHI 012004
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
404 PM EDT Wed Sep 1 2021
NJC041-PAC025-089-095-020200-
/O.NEW.KPHI.FA.W.0031.210901T2004Z-210902T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Warren NJ-Carbon PA-Monroe PA-Northampton PA-
404 PM EDT Wed Sep 1 2021
The National Weather Service in Mount Holly has issued a
* Flood Warning for...
Northwestern Warren County in northwestern New Jersey...
Northwestern Northampton County in eastern Pennsylvania...
Carbon County in northeastern Pennsylvania...
Monroe County in northeastern Pennsylvania...
* Until 1000 PM EDT.
* At 404 PM EDT, Doppler radar indicated heavy rain due to
thunderstorms. Flooding is ongoing or expected to begin shortly in
the warned area. Between 2 and 4 inches of rain have fallen. And a
couple additional inches of rainfall will be possible this
afternoon.
* Some locations that may experience flooding include...
Lehighton, Mount Pocono, East Stroudsburg, Tobyhanna, Palmerton,
Jim Thorpe, Nesquehoning, Weatherly, Delaware Water Gap, Sun
Valley, Pocono Raceway, and Long Pond.
This includes the following highways...
Interstate 80 in New Jersey between mile markers 0 and 1.
Interstate 80 in Pennsylvania between mile markers 277 and 314.
Interstate 380 in Pennsylvania between mile markers 0 and 12.
Northeast Extension between mile markers 72 and 97.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 4091 7599 4101 7573 4105 7577 4109 7577
4113 7569 4112 7563 4122 7554 4125 7513
4115 7516 4114 7508 4108 7503 4109 7497
4097 7512 4084 7536 4077 7569 4076 7579
$$
NC4 follow-up statements
067
WGUS41 KPHI 020042
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
842 PM EDT Wed Sep 1 2021
NJC041-PAC025-089-095-021100-
/O.EXT.KPHI.FA.W.0031.000000T0000Z-210902T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Warren NJ-Carbon PA-Monroe PA-Northampton PA-
842 PM EDT Wed Sep 1 2021
The National Weather Service in Mount Holly has extended the
* Flood Warning for...
Northwestern Warren County in northwestern New Jersey...
Northwestern Northampton County in eastern Pennsylvania...
Carbon County in northeastern Pennsylvania...
Monroe County in northeastern Pennsylvania...
* Until 700 AM EDT Thursday.
* At 842 PM EDT, local law enforcement reported widespread flooding
in the warned area. Several river gauges are in flood, and
numerous roads are closed. Avoid travel in this area. Between 3
and 6 inches of rain have fallen.
* Some locations that may experience flooding include...
Lehighton, Mount Pocono, East Stroudsburg, Tobyhanna, Palmerton,
Jim Thorpe, Nesquehoning, Weatherly, Delaware Water Gap, Sun
Valley, Pocono Raceway, and Long Pond.
This includes the following highways...
Interstate 80 in New Jersey between mile markers 0 and 1.
Interstate 80 in Pennsylvania between mile markers 277 and 314.
Interstate 380 in Pennsylvania between mile markers 0 and 12.
Northeast Extension between mile markers 72 and 97.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 4091 7599 4101 7573 4105 7577 4109 7577
4113 7569 4112 7563 4122 7554 4125 7513
4115 7516 4114 7508 4108 7503 4109 7497
4097 7512 4084 7536 4077 7569 4076 7579
$$
CMS381
WGUS41 KPHI 021030
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
630 AM EDT Thu Sep 2 2021
NJC041-PAC025-089-095-021445-
/O.EXT.KPHI.FA.W.0031.000000T0000Z-210902T1445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Warren NJ-Carbon PA-Monroe PA-Northampton PA-
630 AM EDT Thu Sep 2 2021
The National Weather Service in Mount Holly has extended the
* Flood Warning for...
Northwestern Warren County in northwestern New Jersey...
Northwestern Northampton County in eastern Pennsylvania...
Carbon County in northeastern Pennsylvania...
Monroe County in northeastern Pennsylvania...
* Until 1045 AM EDT.
* At 630 AM EDT, local law enforcement reported flooding in the
warned area. Flooding is already occurring. Between 3 and 6 inches
of rain have fallen.
* For Brodhead Creek at Analomink:
At 6:15am the stage was 6.58 feet.
Flood Stage is 8 feet.
...
For Pohopoco Creek at Kresgeville:
At 6:02am the stage was 8.01 feet.
Flood Stage is 8.5 feet.
...
For Lehigh River at Lehighton:
At 6:16am the stage was 10.38 feet.
Flood Stage is 10 feet.
...
For Tunkhannock Creek at Long Pond:
At 5:30am the stage was 3.83 feet.
Flood Stage is 5 feet.
...
For Brodhead Creek at Minisink Hills:
At 6:16am the stage was 9.07 feet.
Flood Stage is 10 feet.
...
For Pohopoco Creek at Parryville:
At 5:30am the stage was 2.73 feet.
Flood Stage is 5.5 feet.
...
For Aquashicola Creek at Palmerton:
At 5:31am the stage was 8.76 feet.
Flood Stage is 7 feet.
...
For Bush Kill at Shoemakers:
At 5:45am the stage was 6.56 feet.
Flood Stage is 6 feet.
...
For Tobyhanna Creek at Blakeslee:
At 5:15am the stage was 11.46 feet.
Flood Stage is 10 feet.
...
For Delaware River at Tocks Island:
At 6:15am the stage was 17.07 feet.
Flood Stage is 21 feet.
...
For Lehigh River at White Haven:
At 5:30am the stage was 3.14 feet.
Flood Stage is 8 feet.
This includes the following highways...
Interstate 80 in New Jersey between mile markers 0 and 1.
Interstate 80 in Pennsylvania between mile markers 277 and 314.
Interstate 380 in Pennsylvania between mile markers 0 and 12.
Northeast Extension between mile markers 72 and 97.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 4091 7599 4101 7573 4105 7577 4109 7577
4113 7569 4112 7563 4122 7554 4125 7513
4115 7516 4114 7508 4108 7503 4109 7497
4097 7512 4084 7536 4077 7569 4076 7579
$$
Kruzdlo737
WGUS41 KPHI 021434
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
1034 AM EDT Thu Sep 2 2021
NJC041-PAC025-089-095-022045-
/O.EXT.KPHI.FA.W.0031.000000T0000Z-210902T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Warren NJ-Carbon PA-Monroe PA-Northampton PA-
1034 AM EDT Thu Sep 2 2021
The National Weather Service in Mount Holly has extended the
* Flood Warning for...
Northwestern Warren County in northwestern New Jersey...
Northwestern Northampton County in eastern Pennsylvania...
Carbon County in northeastern Pennsylvania...
Monroe County in northeastern Pennsylvania...
* Until 445 PM EDT Thursday.
* At 1034 AM EDT, local law enforcement reported flooding in the
warned area. Flooding is already occurring. Between 3 and 6 inches
of rain have fallen.
* For Brodhead Creek at Analomink:
At 10:15am the stage was 5.78 feet.
Flood Stage is 8 feet.
...
For Pohopoco Creek at Kresgeville:
At 10:16am the stage was 7.82 feet.
Flood Stage is 8.5 feet.
...
For Lehigh River at Lehighton:
At 10:15am the stage was 8.44 feet.
Flood Stage is 10 feet.
...
For Tunkhannock Creek at Long Pond:
At 9:30am the stage was 3.83 feet.
Flood Stage is 5 feet.
...
For Brodhead Creek at Minisink Hills:
At 10:16am the stage was 8.57 feet.
Flood Stage is 10 feet.
...
For Pohopoco Creek at Parryville:
At 9:30am the stage was 2.7 feet.
Flood Stage is 5.5 feet.
...
For Aquashicola Creek at Palmerton:
At 10:16am the stage was 7.32 feet.
Flood Stage is 7 feet.
...
For Bush Kill at Shoemakers:
At 9:45am the stage was 6.34 feet.
Flood Stage is 6 feet.
...
For Tobyhanna Creek at Blakeslee:
At 10:15am the stage was 10.9 feet.
Flood Stage is 10 feet.
...
For Delaware River at Tocks Island:
At 10:15am the stage was 19.82 feet.
Flood Stage is 21 feet.
...
For Lehigh River at White Haven:
At 9:30am the stage was 3.12 feet.
Flood Stage is 8 feet.
This includes the following highways...
Interstate 80 in New Jersey between mile markers 0 and 1.
Interstate 80 in Pennsylvania between mile markers 277 and 314.
Interstate 380 in Pennsylvania between mile markers 0 and 12.
Northeast Extension between mile markers 72 and 97.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 4091 7599 4101 7573 4105 7577 4109 7577
4113 7569 4112 7563 4122 7554 4125 7513
4115 7516 4114 7508 4108 7503 4109 7497
4097 7512 4084 7536 4077 7569 4076 7579
$$
Kruzdlo801
WGUS81 KPHI 021957
FLSPHI
Flood Statement
National Weather Service Mount Holly NJ
357 PM EDT Thu Sep 2 2021
NJC041-PAC025-089-095-022007-
/O.CAN.KPHI.FA.W.0031.000000T0000Z-210902T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Warren NJ-Carbon PA-Monroe PA-Northampton PA-
357 PM EDT Thu Sep 2 2021
...FLOOD WARNING IS CANCELLED FOR NORTHWESTERN WARREN, NORTHWESTERN
NORTHAMPTON, CARBON, AND MONROE COUNTIES...
Flood waters are receding. The flood warning has been cancelled.
LAT...LON 4091 7599 4101 7573 4105 7577 4109 7577
4113 7569 4112 7563 4122 7554 4125 7513
4115 7516 4114 7508 4108 7503 4109 7497
4097 7512 4084 7536 4077 7569 4076 7579
$$
KruzdloThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 3:23 AM EDT | Gale Warning | PHI | 32 hr | |
| Sep 1, 3:23 AM EDT | Small Craft Advisory | PHI | 41 hr | |
| Sep 1, 4:34 AM EDT | Rip Current Statement | PHI | Atlantic, Cape May, Monmouth, Ocean | 39 hr |
| Sep 1, 7:58 AM EDT | Severe Thunderstorm Warning | PHI | Burlington, Ocean | 47 min |
| Sep 1, 8:39 AM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 39 min |
| Sep 1, 9:11 AM EDT | Special Marine Warning | PHI | 64 min | |
| Sep 1, 11:24 AM EDT | Areal Flood Advisory | PHI | Sussex, Warren | 3 hr |
| Sep 1, 4:12 PM EDT | Flash Flood Warning | PHI | Hunterdon, Warren | 7 hr |
| Sep 1, 4:27 PM EDT | River Flood Warning | PHI | Morris, Somerset | 6 days |
| Sep 1, 4:27 PM EDT | River Flood Warning | PHI | Essex, Morris, Passaic | 8 days |
| Sep 1, 4:27 PM EDT | River Flood Warning | PHI | Essex, Morris, Passaic | 6 days |
| Sep 1, 4:27 PM EDT | River Flood Warning | PHI | Essex, Passaic | 21 days |
| Sep 1, 4:33 PM EDT | River Flood Warning | PHI | Morris, Passaic | 46 hr |
| Sep 1, 4:40 PM EDT | River Flood Warning | PHI | Hunterdon, Somerset | 36 hr |
| Sep 1, 4:40 PM EDT | River Flood Warning | PHI | Somerset | 22 hr |
| Sep 1, 4:40 PM EDT | River Flood Warning | PHI | Middlesex, Somerset | 42 hr |
| Sep 1, 4:40 PM EDT | River Flood Warning | PHI | Middlesex, Somerset | 48 hr |
| Sep 1, 4:41 PM EDT | River Flood Warning | PHI | Somerset | 61 hr |
| Sep 1, 5:13 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer | 47 min |
| Sep 1, 5:26 PM EDT | Flash Flood Warning | PHI | Burlington, Camden, Gloucester, Salem | 9 hr |
| Sep 1, 5:33 PM EDT | Special Marine Warning | PHI | 27 min | |
| Sep 1, 5:34 PM EDT | Tornado Warning | PHI | Mercer | 26 min |
| Sep 1, 5:35 PM EDT | Tornado Warning | PHI | Cumberland, Salem | 25 min |
| Sep 1, 5:42 PM EDT | Flash Flood Warning | PHI | Hunterdon, Mercer, Morris, Somerset, Warren | 10 hr |
| Sep 1, 5:57 PM EDT | Tornado Warning | PHI | Gloucester, Salem | 33 min |
| Sep 1, 5:57 PM EDT | Tornado Warning | PHI | Hunterdon, Mercer, Somerset | 33 min |
| Sep 1, 6:05 PM EDT | Flash Flood Warning | PHI | Hunterdon, Mercer, Middlesex, Morris, Somerset | 10 hr |
| Sep 1, 6:08 PM EDT | Flash Flood Warning | PHI | Hunterdon, Morris, Somerset, Sussex, Warren | 6 hr |
| Sep 1, 6:14 PM EDT | Special Marine Warning | PHI | 61 min | |
| Sep 1, 6:20 PM EDT | Tornado Warning | PHI | Hunterdon, Mercer, Somerset | 40 min |
| Sep 1, 6:22 PM EDT | Tornado Warning | PHI | Burlington, Camden, Gloucester | 23 min |
| Sep 1, 6:42 PM EDT | Tornado Warning | PHI | Burlington, Camden | 33 min |
| Sep 1, 6:59 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Morris, Somerset | 61 min |
| Sep 1, 7:04 PM EDT | Tornado Warning | PHI | Burlington, Mercer | 26 min |
| Sep 1, 7:22 PM EDT | Tornado Warning | PHI | Hunterdon, Mercer | 11 min |
| Sep 1, 7:28 PM EDT | Tornado Warning | PHI | Mercer, Middlesex, Morris, Somerset | 47 min |
| Sep 1, 7:31 PM EDT | Flash Flood Warning | PHI | Hunterdon, Mercer, Somerset | 4 hr |
| Sep 1, 7:44 PM EDT | Special Marine Warning | PHI | 61 min | |
| Sep 1, 6:19 AM EDT | Areal Flood Advisory | PHI | Chester, Delaware | 116 min |
| Sep 1, 6:49 AM EDT | Flash Flood Warning | PHI | Chester, Delaware, Philadelphia | 86 min |
| Sep 1, 12:07 PM EDT | Flash Flood Warning | PHI | Carbon, Monroe | 4 hr |
| Sep 1, 1:29 PM EDT | Flash Flood Warning | PHI | Berks, Lehigh | 6 hr |
| Sep 1, 2:53 PM EDT | Flash Flood Warning | PHI | Berks, Chester, Delaware, Montgomery | 9 hr |
| Sep 1, 3:55 PM EDT | River Flood Warning | PHI | Montgomery | 36 hr |
| Sep 1, 3:55 PM EDT | River Flood Warning | PHI | Chester, Montgomery, Philadelphia | 43 hr |
| Sep 1, 3:55 PM EDT | River Flood Warning | PHI | Montgomery, Philadelphia | 41 hr |
| Sep 1, 3:55 PM EDT | River Flood Warning | PHI | Philadelphia | 39 hr |
| Sep 1, 3:55 PM EDT | River Flood Warning | PHI | Berks | 24 hr |
| Sep 1, 4:02 PM EDT | River Flood Warning | PHI | Monroe | 24 hr |
| Sep 1, 4:10 PM EDT | River Flood Warning | PHI | Monroe | 19 hr |
| Sep 1, 4:12 PM EDT | River Flood Warning | PHI | Lehigh, Northampton | 25 hr |
| Sep 1, 4:12 PM EDT | River Flood Warning | PHI | Lehigh, Northampton | 24 hr |
| Sep 1, 4:12 PM EDT | River Flood Warning | PHI | Carbon | 15 hr |
| Sep 1, 4:13 PM EDT | Tornado Warning | PHI | Chester | 32 min |
| Sep 1, 4:20 PM EDT | River Flood Warning | PHI | Montgomery | 22 hr |
| Sep 1, 4:21 PM EDT | River Flood Warning | PHI | Bucks | 29 hr |
| Sep 1, 4:42 PM EDT | Flash Flood Warning | PHI | Chester, Delaware, Montgomery | 6 hr |
| Sep 1, 5:07 PM EDT | River Flood Warning | PHI | Chester | 17 hr |
| Sep 1, 5:15 PM EDT | Tornado Warning | PHI | Delaware, Montgomery, Philadelphia | 30 min |
| Sep 1, 6:38 PM EDT | River Flood Warning | PHI | Chester, Delaware | 26 hr |
| Sep 1, 7:05 PM EDT | Flash Flood Warning | PHI | Bucks | 8 hr |
| Sep 1, 7:23 PM EDT | Areal Flood Warning | PHI | Berks, Lehigh | 14 hr |
| Sep 1, 7:53 PM EDT | River Flood Warning | PHI | Delaware | 13 hr |
Nearby
Areal Flood Warnings in Pennsylvania, 2021Areal Flood Warnings in New Jersey, 2021Every areal 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.