Alert archive / Pennsylvania / Areal Flood Warnings in 2025

Areal Flood Warning 26, NWS Philadelphia/Mount Holly

July 1, 2025Delaware County, Pennsylvania

NWS Philadelphia/Mount Holly issued this areal flood warning at Jul 1, 2025, 6:21 AM EDT for Delaware 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 counties it named.

The facts

Issued: Jul 1, 2025, 6:21 AM EDT (10:21 UTC)
Expired: Jul 1, 2025, 8:29 AM EDT
In force: 2 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: None

County Delaware County, PA

The radar

The Philadelphia radar (KDIX), 84 km from the middle of the area, began a volume at 10:22 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.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 10.4 hours before the alert went out and 203 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2011 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 1318 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 107 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 4.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood warning 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 warning went out at Jul 1, 5:38 AM EDT, 43 minutes earlier.

Area forecast discussion, Jul 1, 5:38 AM EDT, 43 minutes before

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Hazardous weather outlook, Jun 30, 2:49 PM EDT, 15 hours 32 minutes before

Hazardous Weather Outlook
National Weather Service Mount Holly NJ
249 PM EDT Mon Jun 30 2025

MDZ012-015-019-020-011900-
Kent MD-Queen Annes-Talbot-Caroline-
249 PM EDT Mon Jun 30 2025

This Hazardous Weather Outlook is for northeast Maryland.

.DAY ONE...This afternoon and tonight.

	There is a MARGINAL RISK for severe thunderstorms on Monday.

 There is a MARGINAL RISK for excessive rainfall on Monday.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

	There is a SLIGHT RISK for severe thunderstorms on Tuesday.

	There is a SLIGHT RISK for excessive rainfall on Tuesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MJL

In the hours before

Local storm report, Jul 1, 1:23 AM EDT, 4 hours 58 minutes before

Preliminary Local Storm Report
National Weather Service Mount Holly NJ
123 AM EDT Tue Jul 1 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1205 AM     Marine Tstm Wind 1 WNW Monmouth Beach    40.34N 73.99W
07/01/2025  M41 MPH          Monmouth           NJ   Mesonet

            Mesonet station XMNB Monmouth.

&&

DeSilva

Local storm report, Jul 1, 1:50 AM EDT, 4 hours 31 minutes before

Preliminary Local Storm Report
National Weather Service Mount Holly NJ
150 AM EDT Tue Jul 1 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1223 AM     Flood            1 SW Robesonia          40.35N 76.14W
07/01/2025                   Berks              PA   Fire Dept/Rescue

            Vehicle stuck in the water.

&&

DeSilva

Local storm report, Jul 1, 1:54 AM EDT, 4 hours 27 minutes before

Preliminary Local Storm Report
National Weather Service Mount Holly NJ
154 AM EDT Tue Jul 1 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1242 AM     Flood            Leesport                40.45N 75.97W
07/01/2025                   Berks              PA   Fire Dept/Rescue

            Traffic Advisory - 61 NB Closed Due To
            Flooding.

&&

DeSilva

Local storm report, Jul 1, 2:02 AM EDT, 4 hours 19 minutes before

Preliminary Local Storm Report
National Weather Service Mount Holly NJ
202 AM EDT Tue Jul 1 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0130 AM     Flood            Strausstown             40.50N 76.18W
07/01/2025                   Berks              PA   Trained Spotter

            Spotter Network: Interstate 78 is flooding
            under bridges.

&&

DeSilva

Local storm report, Jul 1, 2:14 AM EDT, 4 hours 7 minutes before

Preliminary Local Storm Report
National Weather Service Mount Holly NJ
214 AM EDT Tue Jul 1 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1200 AM     Tstm Wnd Dmg     1 W Bechtelsville       40.37N 75.65W
07/01/2025                   Berks              PA   Public

            Picture of tree down lying across Wissinger
            Rd in Bechtelsville. Time estimated.

&&

DeSilva

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 30, 9:38 PM EDT	Special Marine Warning	PHI		67 min
Jun 30, 9:41 PM EDT	Severe Thunderstorm Warning	PHI	Salem	64 min
Jul 1, 12:05 AM EDT	Special Marine Warning	PHI		37 min
Jul 1, 2:30 AM EDT	Flood Watch	PHI	Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 3 more	19 hr
Jul 1, 1:47 PM EDT	Special Marine Warning	PHI		58 min
Jul 1, 2:58 PM EDT	Severe Thunderstorm Warning	PHI	Burlington	47 min
Jul 1, 3:22 PM EDT	Special Marine Warning	PHI		83 min
Jul 1, 3:39 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Monmouth	66 min
Jul 1, 4:25 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	50 min
Jul 1, 4:36 PM EDT	Special Marine Warning	PHI		84 min
Jul 1, 5:00 PM EDT	Flash Flood Warning	PHI	Monmouth, Ocean	4 hr
Jul 1, 5:07 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Warren	38 min
Jul 1, 5:10 PM EDT	Special Marine Warning	PHI		2 hr
Jul 1, 5:14 PM EDT	Special Marine Warning	PHI		91 min
Jul 1, 5:14 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	61 min
Jul 1, 5:43 PM EDT	Special Marine Warning	PHI		98 min
Jul 1, 6:11 PM EDT	Flash Flood Warning	PHI	Ocean	4 hr
Jul 1, 6:32 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Ocean	58 min
Jul 1, 6:35 PM EDT	Special Marine Warning	PHI		115 min
Jul 1, 6:39 PM EDT	Special Marine Warning	PHI		96 min
Jul 1, 6:44 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	46 min
Jun 30, 11:20 PM EDT	Flash Flood Warning	PHI	Berks	4 hr
Jun 30, 11:47 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Delaware, Montgomery	43 min
Jul 1, 12:38 AM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	36 min
Jul 1, 6:15 AM EDT	River Flood Warning	PHI	Chester	3 hr
Jul 1, 2:32 PM EDT	Severe Thunderstorm Warning	PHI	Chester	43 min
Jul 1, 3:00 PM EDT	Flash Flood Warning	PHI	Chester	4 hr
Jul 1, 3:06 PM EDT	River Flood Warning	PHI	Chester, Delaware	8 hr
Jul 1, 3:31 PM EDT	Flash Flood Warning	PHI	Bucks, Montgomery, Philadelphia	4 hr
Jul 1, 3:34 PM EDT	Severe Thunderstorm Warning	PHI	Berks	56 min
Jul 1, 4:27 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Lehigh, Montgomery	63 min
Jul 1, 4:44 PM EDT	Flash Flood Warning	PHI	Chester	4 hr
Jul 1, 4:47 PM EDT	Tornado Warning	PHI	Berks, Montgomery	28 min
Jul 1, 4:55 PM EDT	Flash Flood Warning	PHI	Berks, Chester, Montgomery	4 hr
Jul 1, 5:14 PM EDT	Flash Flood Warning	PHI	Berks, Bucks, Lehigh, Montgomery	4 hr
Jul 1, 4:50 PM EDT	Severe Thunderstorm Warning	PHI	Kent, New Castle	55 min
Jul 1, 5:04 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	56 min
Jul 1, 5:42 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	48 min

Nearby

Areal Flood Warnings in Pennsylvania, 2025 Every areal flood warning in 2025

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.