Alert archive / Pennsylvania / Areal Flood Advisories in 2023
Areal Flood Advisory 85, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood advisory at Jul 5, 2023, 5:22 PM EDT for Delaware County, Philadelphia County, Pennsylvania. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jul 5, 2023, 5:22 PM EDT (21:22 UTC)
- Expired
- Jul 5, 2023, 8:30 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Delaware County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 73 km from the middle of the area, began a volume at 21:24 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 9.4 hours before the alert went out and 215 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
- 275 J/kg
- Mixed-layer CIN
- -58 J/kg
- Mixed-layer LCL
- 1031 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this areal flood advisory went out at Jul 5, 3:28 PM EDT, 1 hour 54 minutes earlier.
Area forecast discussion, Jul 5, 3:28 PM EDT, 1 hour 54 minutes before
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</html>Hazardous weather outlook, Jul 5, 4:16 PM EDT, 1 hour 6 minutes before
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Local storm report, Jul 5, 12:34 PM EDT, 4 hours 48 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
1234 PM EDT Wed Jul 5 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0610 PM Tstm Wnd Dmg 1 W Mt. Ephraim 39.88N 75.10W
07/04/2023 Camden NJ Law Enforcement
A downburst occurred around Mt. Ephraim,
Brooklawn, and Westville, NJ on Tuesday,
July 4, 2023, resulting in severe winds and
downed trees across the area. Time estimated
by radar.
&&
MJLLocal storm report, Jul 5, 12:43 PM EDT, 4 hours 39 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
1243 PM EDT Wed Jul 5 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0605 PM Flash Flood Haddonfield 39.90N 75.03W
07/04/2023 Camden NJ Law Enforcement
Numerous road closures and multiple water
assists across the Borough of Haddonfield
due to flooded roadways reported by Law
Enforcement. Multiple photos and videos
shared via social media of flooded roadways
in the area. Time estimated by radar.
&&
MJLSpecial weather statement, Jul 5, 1:37 PM EDT, 3 hours 45 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
137 PM EDT Wed Jul 5 2023
NJZ020-027-051800-
Ocean NJ-Southeastern Burlington NJ-
137 PM EDT Wed Jul 5 2023
...A strong thunderstorm will impact portions of west central Ocean
and east central Burlington Counties through 200 PM EDT...
At 137 PM EDT, Doppler radar was tracking a strong thunderstorm over
Chatsworth, or 19 miles southwest of Toms River, moving northwest at
10 mph.
HAZARD...Wind gusts up to 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Brookville, Chatsworth, Old Halfway, Warren Grove, Penn State Forest
and Ocean Acres.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3975 7428 3967 7451 3983 7464 3994 7440
TIME...MOT...LOC 1737Z 153DEG 7KT 3982 7448
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
MLBSpecial weather statement, Jul 5, 2:18 PM EDT, 3 hours 4 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
218 PM EDT Wed Jul 5 2023
MDZ015-019-020-051845-
Queen Anne's MD-Talbot MD-Caroline MD-
218 PM EDT Wed Jul 5 2023
...A strong thunderstorm will impact portions of northeastern Talbot,
south central Queen Anne's and west central Caroline Counties through
245 PM EDT...
At 218 PM EDT, Doppler radar was tracking a strong thunderstorm over
Wye Mills, or near Centerville, moving north at 5 mph.
HAZARD...Wind gusts up to 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Queen Anne, Jumptown, Wye Mills, Starr, Skipton, Cordova, Queenstown
and Hillsboro.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3904 7590 3886 7592 3885 7615 3898 7619
3900 7617 3901 7619 3902 7618
TIME...MOT...LOC 1818Z 172DEG 5KT 3894 7606
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
MLBSpecial weather statement, Jul 5, 3:08 PM EDT, 2 hours 14 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
308 PM EDT Wed Jul 5 2023
DEZ002-MDZ015-020-051945-
Kent DE-Queen Anne's MD-Caroline MD-
308 PM EDT Wed Jul 5 2023
...A strong thunderstorm will impact portions of southwestern Kent,
southeastern Queen Anne's and northeastern Caroline Counties through
345 PM EDT...
At 308 PM EDT, Doppler radar was tracking a strong thunderstorm over
Greensboro, or 15 miles east of Centerville, moving north at 5 mph.
HAZARD...Wind gusts up to 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Denton, Greensboro, Oakland, Ridgely, Goldsboro, Jumptown, Griffin,
Sandtown, Hope, Hillsboro and Henderson.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3890 7562 3885 7592 3906 7600 3912 7566
TIME...MOT...LOC 1908Z 163DEG 6KT 3898 7578
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
MLBLocal storm report, Jul 5, 3:29 PM EDT, 1 hour 53 minutes before
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</html>The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 8:41 PM EDT | Coastal Flood Advisory | PHI | Atlantic, Burlington, Cape May, Cumberland, Monmouth, Ocean | 7 hr |
| Jul 4, 10:15 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden | 3 hr |
| Jul 5, 3:21 AM EDT | Coastal Flood Advisory | PHI | Atlantic, Burlington, Cape May, Cumberland, Monmouth, Ocean | 24 hr |
| Jul 5, 1:37 PM EDT | Special Weather Statement | PHI | Ocean | 23 min |
| Jul 5, 5:26 PM EDT | Severe Thunderstorm Warning | PHI | Camden, Gloucester | 34 min |
| Jul 5, 5:57 PM EDT | Severe Thunderstorm Warning | PHI | Camden, Gloucester | 33 min |
| Jul 5, 6:12 PM EDT | Areal Flood Advisory | PHI | Camden, Gloucester | 4 hr |
| Jul 5, 6:30 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester | 30 min |
| Jul 5, 5:45 PM EDT | Flash Flood Warning | PHI | Delaware, Philadelphia | 107 min |
Nearby
Areal Flood Advisories in Pennsylvania, 2023Every areal flood advisory in 2023
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.