Alert archive / Pennsylvania / Flash Flood Warnings in 2020
Flash Flood Warning 40, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 4, 2020, 10:20 AM EDT for 5 counties in Pennsylvania; Burlington County, Camden County, Gloucester County, New Jersey. It was in force for 4 hr. 60 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
- Aug 4, 2020, 10:20 AM EDT (14:20 UTC)
- Expired
- Aug 4, 2020, 2:15 PM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Bucks County, PA, Chester County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 83 km from the middle of the area, began a volume at 14:22 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 |
|---|---|---|---|
| Aug 4, 10:30 AM EDT | FLASH FLOOD | 1 Ne Lawrence Park, PA | DARBY CREEK ROAD CLOSED NEAR LAWRENCE ROAD FROM FLASH FLOODING. TIME BASED ON DISPATCH REPORT. |
| Aug 4, 10:37 AM EDT | FLASH FLOOD | 1 N Trout Lake, PA | FLASH FLOODING CLOSED BRYN MAWR AVENUE NEAR MILL ROAD. TIME BASED ON DISPATCH REPORT. |
| Aug 4, 10:39 AM EDT | FLOOD | 1 Se Roxborough, PA | FLOODING ON INTERSTATE 76 NEAR THE MONTGOMERY DRIVE EXIT WITH LANE RESTRICTIONS IN PLACE. TIME BASED ON DISPATCH REPORT. |
| Aug 4, 10:40 AM EDT | FLASH FLOOD | 1 Ssw Summerdale, PA | THE GAUGE ON FRANKFORD CREEK AT PHILADELPHIA REACHED MODERATE FLOOD STAGE WHEN IT CRESTED AT 9.81 FT THIS AFTERNOON. |
| Aug 4, 10:44 AM EDT | FLASH FLOOD | 1 Ssw Mantua, PA | FLOODING ON UNIVERSITY AVENUE NEAR 38TH STREET WITH SEVERAL ROAD CLOSURES AND LANE RESTRICTIONS IN THE AREA. TIME BASED ON DISPATCH REPORT. |
| Aug 4, 10:46 AM EDT | HEAVY RAIN 3.45 | 1 N Wyola, PA | MESONET STATION NETWN NEWTOWN (JHS). |
| Aug 4, 10:59 AM EDT | HEAVY RAIN 3.19 | 1 Sw Willistown Twp, PA | MESONET STATION AS641 WESTTOWN. |
| Aug 4, 11:00 AM EDT | FLASH FLOOD | 1 Nw Springfield Twp, PA | FLOODING NEAR OLD MARPLE ROAD AND STATE HIGHWAY 320 WITH SEVERAL ROAD CLOSURES IN THE AREA. TIME BASED ON DISPATCH REPORTS. |
| Aug 4, 11:00 AM EDT | HEAVY RAIN 3.32 | Bridgeport, PA | MESONET STATION NRSP1 NORRISTOWN. |
| Aug 4, 11:06 AM EDT | HEAVY RAIN 6 | Skippack, PA | ONE INCH PAST 15 MINUTES. |
| Aug 4, 11:15 AM EDT | FLASH FLOOD | 1 Ssw King Of Prussia, PA | FLOODING FORCED CLOSURES ON INTERSTATE 76 NEAR THE U.S. HIGHWAY 202 INTERCHANGE. TIME BASED ON DISPATCH REPORT. |
| Aug 4, 11:15 AM EDT | FLASH FLOOD | 1 S Upper Hanover Twp, PA | USGS GAUGE ON PERKIOMEN CREEK AT EAST GREENVILE CRESTED AT 9.57 FT AT 3:46 PM (AFTER HITTING MINOR FLOOD AT 11:15 AM) WHICH IS ABOVE MAJOR FLOOD STAGE. |
| Aug 4, 11:15 AM EDT | FLASH FLOOD | 1 Wnw Penn Wynne, PA | FLASH FLOODING CLOSED HAVERFORD ROAD NEAR KARAKUNG DRIVE. TIME BASED ON DISPATCH REPORT. |
| Aug 4, 11:26 AM EDT | HEAVY RAIN 2.2 | 1 Ese Ashland, NJ | MESONET STATION CW4621 VOORHEES. |
| Aug 4, 11:30 AM EDT | HEAVY RAIN 5.28 | 1 Se Collegeville, PA | MESONET STATION DW7361 COLLEGEVILLE. |
| Aug 4, 11:32 AM EDT | FLOOD | 2 Ese South Philadelphi, PA | FLOODING ON I-95 NEAR STATE HIGHWAY 611. TIME BASED ON DISPATCH REPORT. |
| Aug 4, 11:39 AM EDT | FLASH FLOOD | Mantua, NJ | CORRECTS PREVIOUS TROPICAL STORM REPORT FROM MANTUA. FLASH FLOODING ON STATE HIGHWAY 45 NEAR BERKELEY ROAD. ALL LANES CLOSED. TIME BASED ON DISPATCH REPORT. |
| Aug 4, 11:45 AM EDT | FLASH FLOOD | 2 Ene Schwenksville, PA | THE GAUGE ON THE EAST BRANCH PERKIOMEN CREEK AT SCHWENKSVILLE REACHED FLOOD STAGE AT 1145 AM AND CRESTED AT 13.20 FEET (MAJOR FLOODING) AT 645 PM ON AUGUST 4. |
| Aug 4, 11:45 AM EDT | FLASH FLOOD | Bridgeport, PA | THE GAUGE ON THE SCHUYLKILL RIVER IN NORRISTOWN REACHED FLOOD STAGE AT 1145 AM ON AUGUST 4 AND CRESTED AT 20.55 FEET (MAJOR FLOODING) AT 1200 AM ON AUGUST 5. |
| Aug 4, 11:45 AM EDT | HEAVY RAIN 3.63 | South Pottstown, PA | MESONET STATION PTNP1 SOUTH POTTSTOWN. |
| Aug 4, 11:46 AM EDT | FLASH FLOOD | 2 Sw Pennsburg, PA | GAUGE ON THE WEST BRANCH OF THE PERKIOMEN CREEK AT HILLEGASS CRESTED AT 6.68 FT AT 12:45PM (AFTER REACHING MINOR FLOOD AT 11:46). THE CREST WAS IN THE MODERATE FLOOD CATEGORY. |
| Aug 4, 11:50 AM EDT | FLASH FLOOD | 2 Se Oaks, PA | FLASH FLOODING CLOSED STATE HIGHWAY 363 NEAR AUDUBON ROAD. TIME BASED ON DISPATCH REPORT. |
| Aug 4, 11:50 AM EDT | HEAVY RAIN 4.51 | 1 Ese Eagleville, PA | MESONET STATION AP069 EAGLEVILLE. |
| Aug 4, 11:52 AM EDT | HEAVY RAIN 5.03 | 1 Nw East Norriton, PA | MESONET STATION EW6703 EAST NORRITON. |
| Aug 4, 11:54 AM EDT | HEAVY RAIN 2.08 | 2 Nnw Medford Twp., NJ | ASOS STATION KVAY MOUNT HOLLY. |
| Aug 4, 12:00 PM EDT | FLASH FLOOD | King Of Prussia, PA | FLOODING ON U.S. HIGHWAY 202 NEAR THE I-76 INTERCHANGE WITH ROAD CLOSURES IN THE AREA. TIME BASED ON DISPATCH REPORT. |
| Aug 4, 12:00 PM EDT | FLASH FLOOD | Skippack Twp, PA | SEVERAL WATER RESCUES WITHING SKIPPACK TOWNSHIP. |
| Aug 4, 12:00 PM EDT | FLASH FLOOD | Spring City, PA | WATER FLOWING ON ROADWAY IN SPRING CITY. |
| Aug 4, 12:00 PM EDT | HEAVY RAIN 2.32 | Medford Twp., NJ | MESONET STATION MEDN4 MEDFORD TWP. |
| Aug 4, 12:00 PM EDT | HEAVY RAIN 5.34 | Graterford, PA | MESONET STATION GRAP1 GRATERFORD. |
| Aug 4, 12:00 PM EDT | HEAVY RAIN 6.31 | Skippack Twp, PA | |
| Aug 4, 12:02 PM EDT | FLASH FLOOD | Graterford, PA | THE GAUGE ON PERKIOMEN CREEK AT GRATERFORD REACHED FLOOD STAGE AT 1202 PM AND CRESTED AT 19.14 FEET (RECORD FLOODING) AT 815 PM ON AUGUST 4. |
| Aug 4, 12:07 PM EDT | HEAVY RAIN 5.69 | 2 S East Nantmeal Twp, PA | MESONET STATION FW0827 GLENMOORE. |
| Aug 4, 12:13 PM EDT | HEAVY RAIN 6.43 | Belmont Hills, PA | MESONET STATION EW4529 BALA CYNWYD. |
| Aug 4, 12:15 PM EDT | HEAVY RAIN 2.67 | 1 Nnw Rockledge, PA | MESONET STATION FW0421 WILLOW GROVE. |
| Aug 4, 12:15 PM EDT | HEAVY RAIN 3.42 | 1 Nnw Lima, PA | MESONET STATION FW6794 MEDIA. |
| Aug 4, 12:15 PM EDT | HEAVY RAIN 3.65 | 1 Nw Willow Grove, PA | MESONET STATION FW1161 WILLOW GROVE. |
| Aug 4, 12:15 PM EDT | HEAVY RAIN 5.62 | 1 Sse New Hanover Twp, PA | MESONET STATION FW2483 NEW HANOVER. |
| Aug 4, 12:16 PM EDT | HEAVY RAIN 5.21 | 1 W Easttown Twp, PA | MESONET STATION EW0301 BERWYN. |
| Aug 4, 12:19 PM EDT | HEAVY RAIN 4.26 | North Coventry Twp, PA | MESONET STATION AS655 POTTSTOWN. |
| Aug 4, 12:20 PM EDT | FLASH FLOOD | North Coventry Twp, PA | NUMEROUS WATER RESCUES AND BASEMENT FLOODING. 6.72 INCHES OF RAIN HAS FALLEN. |
| Aug 4, 12:21 PM EDT | HEAVY RAIN 4.85 | 1 S North Coventry Twp, PA | MESONET STATION PTNCT NORTH COVENTRY TWP. |
| Aug 4, 12:22 PM EDT | HEAVY RAIN 6.1 | Ambler, PA | REPORTED AT AMBLER. |
| Aug 4, 12:30 PM EDT | FLASH FLOOD | Exton, PA | FLOODING NEAR THE INTERSECTION OF BUSINESS U.S. HIGHWAY 30 AND STATE HIGHWAY 100 IN EXTON. SEVERAL ROAD CLOSURES IN PLACE. TIME BASED ON SOCIAL MEDIA AND RADAR. |
| Aug 4, 12:30 PM EDT | HEAVY RAIN 2.19 | 1 Se Turnersville, NJ | MESONET STATION EW0923 TURNERSVILLE. |
| Aug 4, 12:30 PM EDT | HEAVY RAIN 2.25 | 1 Wnw Gloucester Twp, NJ | MESONET STATION DW4067 GLENDORA. |
| Aug 4, 12:30 PM EDT | HEAVY RAIN 2.71 | 1 E Willow Grove, PA | MESONET STATION EW1527 WILLOW GROVE. |
| Aug 4, 12:30 PM EDT | HEAVY RAIN 4.82 | 1 Ssw Cedarville, PA | MESONET STATION EW5860 POTTSTOWN. |
| Aug 4, 12:30 PM EDT | HEAVY RAIN 5.28 | Phoenixville, PA | MESONET STATION EW4075 PHOENIXVILLE. |
| Aug 4, 12:30 PM EDT | HEAVY RAIN 5.49 | East Nantmeal Twp, PA | |
| Aug 4, 12:33 PM EDT | FLASH FLOOD | Uwchlan Twp, PA | FLASH FLOODING CLOSED SHIP ROAD NEAR NEWCOMEN ROAD. TIME BASED ON DISPATCH REPORT. |
| Aug 4, 12:33 PM EDT | HEAVY RAIN 6.14 | 1 Wsw Ambler, PA | MESONET STATION AR075 AMBLER. |
| Aug 4, 12:35 PM EDT | HEAVY RAIN 4.81 | 2 Ese Sanatoga, PA | ASOS STATION KPTW POTTSTOWN. |
| Aug 4, 12:38 PM EDT | HEAVY RAIN 4.68 | 2 S East Goshen Twp., PA | MESONET STATION AT593 WEST CHESTER. |
| Aug 4, 12:40 PM EDT | HEAVY RAIN 4.29 | 1 Nnw Oreland, PA | MESONET STATION EW7157 FORT WASHINGTON. |
| Aug 4, 12:40 PM EDT | HEAVY RAIN 4.55 | Hatfield, PA | MESONET STATION CW2718 HATFIELD. |
| Aug 4, 12:40 PM EDT | HEAVY RAIN 4.68 | 1 Nw Conshohocken, PA | MESONET STATION 6809D 1 NW CONSHOHOCKEN. |
| Aug 4, 12:40 PM EDT | HEAVY RAIN 5.19 | Royersford, PA | MESONET STATION RYRSF ROYERSFORD (ES). |
| Aug 4, 12:40 PM EDT | HEAVY RAIN 5.22 | 2 N East Goshen Twp., PA | MESONET STATION FW6193 MALVERN. |
| Aug 4, 12:40 PM EDT | HEAVY RAIN 5.99 | Swarthmore, PA | MESONET STATION DW9584 SWARTHMORE. |
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, 2.3 hours before the alert went out and 229 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
- 1593 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 570 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 150 m²/s²
- 0-3 km storm-relative helicity
- 245 m²/s²
- Significant tornado parameter
- 1.5
- Supercell composite
- 7.4
The text
As transmitted.
267
WGUS51 KPHI 041420
FFWPHI
NJC005-007-015-PAC017-029-045-091-101-041815-
/O.NEW.KPHI.FF.W.0040.200804T1420Z-200804T1815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
1020 AM EDT Tue Aug 4 2020
The National Weather Service in Mount Holly NJ has issued a
* Flash Flood Warning for...
Camden County in southern New Jersey...
Northeastern Gloucester County in southern New Jersey...
Northwestern Burlington County in southern New Jersey...
Montgomery County in southeastern Pennsylvania...
Southeastern Bucks County in southeastern Pennsylvania...
Northeastern Chester County in southeastern Pennsylvania...
Philadelphia County in southeastern Pennsylvania...
Delaware County in southeastern Pennsylvania...
* Until 215 PM EDT.
* At 1015 AM EDT, Doppler radar indicated thunderstorms producing
heavy rain just south of the warned area. Two to three inches of
rain have been falling in about one hour with these storms. The
heavy rain was moving north and will move into the warned area
shortly. Flash flooding will likely occur as a result.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
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 could experience flooding include...
Philadelphia, Camden, Gloucester City, Cherry Hill, Evesham, Mount
Laurel, Norristown, Chester, Willingboro, Deptford, Voorhees,
Medford, Pottstown, West Deptford, Lindenwold, Phoenixville,
Lansdale, West Norriton, Hammonton and East Norriton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 4025 7569 4044 7553 3987 7457 3961 7487
4014 7587
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...2-3 INCHES IN 1 HOUR
$$
Kruzdlo1 follow-up statement
396
WGUS71 KPHI 041803
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
203 PM EDT Tue Aug 4 2020
NJC005-007-015-041811-
/O.CAN.KPHI.FF.W.0040.000000T0000Z-200804T1815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Camden NJ-Gloucester NJ-Burlington NJ-
203 PM EDT Tue Aug 4 2020
...THE FLASH FLOOD WARNING FOR CAMDEN...NORTHEASTERN GLOUCESTER AND
NORTHWESTERN BURLINGTON COUNTIES IS CANCELLED...
Flooding is no longer expected to pose a threat. Please continue to
heed any remaining road closures.
LAT...LON 4025 7569 4044 7553 4007 7491 4005 7497
3998 7508 3996 7513 3990 7513 3985 7525
3985 7532 4014 7587
$$
PAC017-029-045-091-101-041815-
/O.CON.KPHI.FF.W.0040.000000T0000Z-200804T1815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Montgomery PA-Bucks PA-Chester PA-Philadelphia PA-Delaware PA-
203 PM EDT Tue Aug 4 2020
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 215 PM EDT FOR
MONTGOMERY...SOUTHEASTERN BUCKS...NORTHEASTERN CHESTER...PHILADELPHIA
AND DELAWARE COUNTIES...
At 201 PM EDT, gauge reports indicated flooding occuring on many of
the smaller creeks and streams. Up to 5 inches of rain fell with the
earlier heavy rain. Any additional rain should be light, but it will
take time for the runoff to recede. Flash flooding is already
occurring.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...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 could experience flooding include...
Philadelphia, Camden, Norristown, Pottstown, Phoenixville, Lansdale,
West Norriton, East Norriton, Yeadon, Conshohocken, Palmyra, Hatboro,
Souderton, Folcroft, Ambler, Swarthmore, Paulsboro, Collegeville,
Royersford and Jenkintown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 4025 7569 4044 7553 4007 7491 4005 7497
3998 7508 3996 7513 3990 7513 3985 7525
3985 7532 4014 7587
FLASH FLOOD...GAUGE INDICATED
$$
SFJThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 5:17 AM EDT | Areal Flood Advisory | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 4 hr |
| Aug 4, 7:23 AM EDT | Tornado Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 20 min |
| Aug 4, 7:28 AM EDT | Flash Flood Warning | PHI | Chester, Delaware, Montgomery | 3 hr |
| Aug 4, 8:11 AM EDT | Flash Flood Warning | PHI | Bucks, Lehigh, Montgomery, Northampton | 4 hr |
| Aug 4, 8:19 AM EDT | River Flood Warning | PHI | Delaware | 15 hr |
| Aug 4, 8:19 AM EDT | Tornado Warning | PHI | Bucks | 26 min |
| Aug 4, 9:23 AM EDT | Tornado Warning | PHI | Chester | 22 min |
| Aug 4, 9:29 AM EDT | Tornado Warning | PHI | Monroe, Northampton | 31 min |
| Aug 4, 9:38 AM EDT | Flash Flood Warning | PHI | Monroe, Northampton | 4 hr |
| Aug 4, 9:58 AM EDT | Tornado Warning | PHI | Monroe | 16 min |
| Aug 4, 10:02 AM EDT | Flash Flood Warning | PHI | Chester, Delaware | 4 hr |
| Aug 4, 10:51 AM EDT | Tornado Warning | PHI | Montgomery | 24 min |
| Aug 4, 11:01 AM EDT | Flash Flood Warning | PHI | Bucks | 4 hr |
| Aug 4, 11:13 AM EDT | Areal Flood Advisory | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 4 hr |
| Aug 4, 11:43 AM EDT | Flash Flood Warning | PHI | Berks, Lehigh, Northampton | 4 hr |
| Aug 4, 12:06 PM EDT | River Flood Warning | PHI | Chester | 11 hr |
| Aug 4, 12:37 PM EDT | River Flood Warning | PHI | Montgomery | 14 hr |
| Aug 4, 12:48 PM EDT | River Flood Warning | PHI | Chester, Delaware | 24 hr |
| Aug 4, 1:01 PM EDT | River Flood Warning | PHI | Bucks | 18 hr |
| Aug 4, 1:12 PM EDT | River Flood Warning | PHI | Berks | 10 hr |
| Aug 4, 1:12 PM EDT | River Flood Warning | PHI | Montgomery | 26 hr |
| Aug 4, 1:12 PM EDT | River Flood Warning | PHI | Chester, Montgomery, Philadelphia | 43 hr |
| Aug 4, 1:12 PM EDT | River Flood Warning | PHI | Montgomery, Philadelphia | 35 hr |
| Aug 4, 1:59 PM EDT | Areal Flood Warning | PHI | Chester, Delaware | 9 hr |
| Aug 4, 2:09 PM EDT | Areal Flood Warning | PHI | Berks, Chester, Delaware, Montgomery, Philadelphia | 15 hr |
| Aug 4, 2:23 PM EDT | River Flood Warning | PHI | Lehigh | 16 hr |
| Aug 4, 2:47 PM EDT | Areal Flood Warning | PHI | Bucks | 9 hr |
| Aug 4, 3:42 PM EDT | Areal Flood Warning | PHI | Lehigh, Northampton | 4 hr |
| Aug 4, 4:39 PM EDT | River Flood Warning | PHI | Monroe | 6 hr |
| Aug 4, 7:29 PM EDT | Areal Flood Warning | PHI | Lehigh, Northampton | 12 hr |
| Aug 3, 8:07 PM EDT | Special Weather Statement | PHI | Hunterdon, Somerset, Warren | 23 min |
| Aug 3, 8:26 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Middlesex, Morris, Somerset | 34 min |
| Aug 3, 9:02 PM EDT | Special Weather Statement | PHI | Morris | 28 min |
| Aug 4, 5:55 AM EDT | Special Marine Warning | PHI | 21 min | |
| Aug 4, 8:38 AM EDT | Special Marine Warning | PHI | 52 min | |
| Aug 4, 9:16 AM EDT | Tornado Warning | PHI | Cumberland | 18 min |
| Aug 4, 9:28 AM EDT | Special Marine Warning | PHI | 32 min | |
| Aug 4, 9:31 AM EDT | Special Marine Warning | PHI | 59 min | |
| Aug 4, 9:42 AM EDT | Tornado Warning | PHI | Atlantic, Cape May | 19 min |
| Aug 4, 10:15 AM EDT | Tornado Warning | PHI | Atlantic, Burlington, Ocean | 14 min |
| Aug 4, 11:00 AM EDT | Tornado Warning | PHI | Monmouth, Ocean | 11 min |
| Aug 4, 11:59 AM EDT | Areal Flood Advisory | PHI | Hunterdon, Middlesex, Monmouth, Morris, Somerset | 4 hr |
| Aug 4, 2:33 PM EDT | River Flood Warning | PHI | Hunterdon, Somerset | 5 hr |
| Aug 4, 4:37 PM EDT | Areal Flood Warning | PHI | Cumberland, Salem | 10 hr |
| Aug 4, 5:04 PM EDT | Small Craft Advisory | PHI | 14 hr | |
| Aug 4, 5:30 PM EDT | Coastal Flood Statement | PHI | Ocean | 103 min |
Nearby
Flash Flood Warnings in Pennsylvania, 2020Flash Flood Warnings in New Jersey, 2020Every flash flood warning in 2020
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.