Alert archive / Pennsylvania / Flash Flood Warnings in 2026
Flash Flood Warning 14, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jun 22, 2026, 11:21 PM EDT for Northampton County, Pennsylvania. It was in force for 3 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 22, 2026, 11:21 PM EDT (03:21 UTC)
- Expired
- Jun 23, 2026, 2:13 AM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
County Northampton County, PA
The radar
The Philadelphia radar (KDIX), 111 km from the middle of the area, began a volume at 03:21 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 3.4 hours before the alert went out and 202 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
- 143 J/kg
- Mixed-layer CIN
- -75 J/kg
- Mixed-layer LCL
- 737 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 292 m²/s²
- 0-3 km storm-relative helicity
- 372 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted.
465
WGUS51 KPHI 230321
FFWPHI
PAC095-230730-
/O.NEW.KPHI.FF.W.0014.260623T0321Z-260623T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
1121 PM EDT Mon Jun 22 2026
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Central Northampton County in eastern Pennsylvania...
* Until 330 AM EDT.
* At 1121 PM EDT, Doppler radar indicated heavy rain across the
warned area. Between 1 and 2 inches of rain have fallen.
Additional rainfall amounts of 1 to 2 inches are possible in the
warned area. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...Radar.
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 may experience flash flooding include...
Easton, Bethlehem, Forks, Wilson, Nazareth, Pen Argyl, Wind Gap,
Bath, Belfast, West Easton, Tatamy and Steuben.
This includes Interstate 78 in Pennsylvania between mile markers 70
and 76.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Flooding is occurring or is imminent. It is important to know where
you are relative to streams, rivers, or creeks which can become
killers in heavy rains. Campers and hikers should avoid streams or
creeks.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4079 7547 4086 7525 4072 7519 4071 7519
4071 7520 4070 7520 4069 7520 4068 7520
4068 7519 4068 7518 4061 7524 4060 7533
FLASH FLOOD...RADAR INDICATED
$$
MPS1 follow-up statement
266
WGUS71 KPHI 230613
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
213 AM EDT Tue Jun 23 2026
PAC095-230623-
/O.CAN.KPHI.FF.W.0014.000000T0000Z-260623T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Northampton PA-
213 AM EDT Tue Jun 23 2026
...FLASH FLOOD WARNING IS CANCELLED FOR CENTRAL NORTHAMPTON COUNTY...
Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
&&
LAT...LON 4079 7547 4086 7525 4072 7519 4071 7519
4071 7520 4070 7520 4069 7520 4068 7520
4068 7519 4068 7518 4061 7524 4060 7533
$$
RCMWhat forecasters said that day
The local office's own words before this flash 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 flash flood warning went out at Jun 22, 9:58 PM EDT, 1 hour 23 minutes earlier. Its key messages:
- 1. Low pressure continues to pass through the region. Additional rounds of showers and thunderstorms with the potential for flooding and flash flooding are likely for Tuesday. 2. Another cold front is expected to approach the region late this week, bringing more chances for showers and storms.
Area forecast discussion, Jun 22, 9:58 PM EDT, 1 hour 23 minutes before
Area Forecast Discussion
National Weather Service Mount Holly NJ
958 PM EDT Mon Jun 22 2026
.WHAT HAS CHANGED...
1. The Severe Thunderstorm Watch is no longer in effect for
portions of southern New Jersey and Delmarva.
2. Showers/storms now look to linger into Tuesday as the
frontal system now looks slower to depart.
&&
.KEY MESSAGES...
1. Low pressure continues to pass through the region.
Additional rounds of showers and thunderstorms with the
potential for flooding and flash flooding are likely for
Tuesday.
2. Another cold front is expected to approach the region late
this week, bringing more chances for showers and storms.
&&
.DISCUSSION...
KEY MESSAGE 1...Low pressure continues to pass through the
region. Additional rounds of showers and thunderstorms with the
potential for flooding and flash flooding are likely for
Tuesday.
The Severe Thunderstorm Watch is no longer in effect for
portions of southern New Jersey, the eastern shores of
Maryland, and Delaware.
For Tuesday, the big change in the forecast is that the system
now looks to get hung up over the area with the latest
indications actually being for a new low to develop near near
Delmarva. This will occur as another piece of energy moves
around the base of the upper trough over the east. This will
result in more rounds of showers and storms that could once
again be on the heavier side by the afternoon. Near the warm
sector over southern Delmarva, we can't rule out some storms
becoming severe and the SPC now has a MARGINAL risk for severe
storms just getting into Sussex County Delaware.
Low pressure with it's associated showers/storms should finally
move out through Tuesday night.
KEY MESSAGE 2...Another cold front is expected to approach the
region late this week, bringing more chances for showers and
storms.
Another cold front is expected to approach our region late in
the week (likely crossing through our region Friday into
Saturday). More showers/storms are likely beginning as early as
late day Thursday and then continuing Friday. Southwesterly
flow ahead of the front should allow for plenty of moisture
advection ahead of the rain chances. However with the best
forcing more centered north of the region, that could limit how
widespread significant rain is with this event. As for what
hazards to expect with this event, that will be highly dependent
on the timing of the showers and storms, which is still
uncertain.
The front may linger nearby next weekend and if this occurs it
would keep chances for shower/storms going, especially in the
afternoon/evening hours. There is uncertainty regarding this
though.
&&
.AVIATION /01Z TUESDAY THROUGH SATURDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.
Tonight...A round of SHRA/TSRA will now primarily impact
KMIV/KACY through 02Z or so. Another round of SHRA with isolated
TSRA possible from 02Z to 06Z or so. Otherwise, CIGs will lower
to MVFR, and then IFR and possibly LIFR after 06Z with MVFR
VSBYs in BR. The strongest TSRA is currently just north of KACY.
Winds will become LGT/VRB after 06Z. Moderate confidence
overall.
Tuesday...Sub-VFR conds in the morning in BR and stratus, then
another round of SHRA with scattered TSRA will impact most
terminals from late morning through late afternoon with MVFR/IFR
conds. Winds become N around 10 kt from late morning on.
Moderate confidence.
Tuesday night...VFR. Light N to NW winds. High confidence.
Outlook...
Wednesday...VFR. No significant weather.
Thursday through Saturday...Chances for shower/storms return
(30 to 50 percent chances) beginning late day Thursday and these
could bring brief restrictions.
&&
.MARINE...
Small Craft Advisory in effect through tonight with southerly
wind gusts increasing to 30 knots with seas building to 4 to 6
feet. Some gusty thunderstorms will be possible this evening.
After a lull, another period of SCA conditions will be possible
late day Tuesday into Tuesday night due to gusty N/NW winds.
Outlook...
Wednesday through Saturday...Sub SCA conditions.
Rip Currents...
On Tuesday, winds will be out of the south to southwest around
10 mph, turning to the north at 10 to 15 mph with gusts up to 20
mph in the afternoon. Breaking waves will be 1 to 3 feet with a
light southeasterly swell with a period around 6 seconds. As a
result, there is a LOW risk for the development of dangerous and
life threatening rip currents for the Jersey Shore and Delaware
Beaches.
On Wednesday, winds will be light and variable in the morning,
turning south around 10 mph in the afternoon. Breaking waves
will be 1 to 2 feet with a light southeast swell with a period
around 7 seconds. As a result, there is a LOW risk for the
development of dangerous and life threatening rip currents for
the Jersey Shore and Delaware Beaches.
For specific beach forecasts, visit weather.gov/beach/phi
&&
.PHI WATCHES/WARNINGS/ADVISORIES...
PA...Flood Watch until 6 AM EDT Tuesday for PAZ070-071-101>106.
NJ...Flood Watch until 6 AM EDT Tuesday for NJZ008>010-012-013-
015>019.
DE...Flood Watch until 6 AM EDT Tuesday for DEZ001.
MD...None.
MARINE...Small Craft Advisory until midnight EDT tonight for ANZ430-431.
Small Craft Advisory until 6 AM EDT Tuesday for ANZ450>455.
&&
DISCUSSION...Fitzsimmons/Guzzo/Johnson/MPS/RCM
AVIATION...Guzzo/MPS
MARINE...Fitzsimmons/Guzzo/Johnson/MPS/RCMHazardous weather outlook, Jun 22, 5:07 AM EDT, 18 hours 14 minutes before
Hazardous Weather Outlook National Weather Service Mount Holly NJ 507 AM EDT Mon Jun 22 2026 MDZ012-015-019-020-230915- Kent MD-Queen Annes-Talbot-Caroline- 507 AM EDT Mon Jun 22 2026 This Hazardous Weather Outlook is for northeast Maryland. .DAY ONE...Today and tonight. A slight risk of severe thunderstorms and excessive rainfall exists today and tonight. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Local storm report, Jun 22, 11:08 PM EDT, 13 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
1108 PM EDT Mon Jun 22 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0636 PM Tstm Wnd Dmg Washington Twp 39.75N 75.08W
06/22/2026 Gloucester NJ 911 Call Center
Several trees and wires down across
Washington Twp. Time estimated by radar.
&&
MJLLocal storm report, Jun 22, 11:09 PM EDT, 12 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
1109 PM EDT Mon Jun 22 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0634 PM Tstm Wnd Dmg Pitman 39.74N 75.12W
06/22/2026 Gloucester NJ 911 Call Center
Several trees and wires down across Pitman.
Time estimated by radar.
&&
MJLLocal storm report, Jun 22, 11:10 PM EDT, 11 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
1110 PM EDT Mon Jun 22 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0626 PM Tstm Wnd Dmg Mantua 39.79N 75.17W
06/22/2026 Gloucester NJ 911 Call Center
Several trees and wires down across Mantua
Township. Time estimated by radar.
&&
MJLLocal storm report, Jun 22, 11:15 PM EDT, 6 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
1115 PM EDT Mon Jun 22 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0740 PM Flood 1 SE Turnersville 39.76N 75.05W
06/22/2026 Gloucester NJ 911 Call Center
Vehicle stuck in water on Black Horse Pike
near Whitman Dr.
&&
MJLLocal storm report, Jun 22, 11:17 PM EDT, 4 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
1117 PM EDT Mon Jun 22 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0730 PM Flood 1 WSW Pitman 39.73N 75.13W
06/22/2026 Gloucester NJ 911 Call Center
Vehicle stuck in water near Pitman Ave and
Commerce Ave.
&&
MJLLocal storm report, Jun 22, 11:19 PM EDT, 2 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
1119 PM EDT Mon Jun 22 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0730 PM Flood Pitman 39.74N 75.12W
06/22/2026 Gloucester NJ 911 Call Center
House flooded on Brentwood Ave.
&&
MJLNearby
Flash Flood Warnings in Pennsylvania, 2026Every flash flood warning in 2026
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.