Alert archive / Maryland / Flash Flood Warnings in 2026
Flash Flood Warning 45, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 18, 2026, 5:39 AM EDT for Caroline County, Queen Anne's County, Talbot County, Maryland. It was in force for 62 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 18, 2026, 5:39 AM EDT (09:39 UTC)
- Expired
- Jul 18, 2026, 6:41 AM EDT
- In force
- 62 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Caroline County, MD, Queen Anne's County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 43 km from the middle of the area, began a volume at 09:42 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, 9.7 hours before the alert went out and 129 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
- 16 J/kg
- Mixed-layer CIN
- -327 J/kg
- Mixed-layer LCL
- 1647 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
056
WGUS51 KPHI 180939
FFWPHI
MDC011-035-041-181345-
/O.NEW.KPHI.FF.W.0045.260718T0939Z-260718T1345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
539 AM EDT Sat Jul 18 2026
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Central Caroline County in eastern Maryland...
Northeastern Talbot County in eastern Maryland...
South Central Queen Anne's County in northeastern Maryland...
* Until 945 AM EDT.
* At 539 AM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 3 inches of rain
have fallen. The expected rainfall rate is 2 to 3 inches in 1
hour. 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 thunderstorms.
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...
Denton, Greensboro, Oakland, Ridgely, Goldsboro, Queen Anne,
Jumptown, Cordova, Starr, Griffin, Skipton and Wye Mills.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 3901 7591 3903 7578 3890 7573 3889 7573
3886 7593 3883 7616 3897 7616
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...2-3 INCHES IN 1 HOUR
$$
RCM1 follow-up statement
559
WGUS71 KPHI 181041
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
641 AM EDT Sat Jul 18 2026
MDC011-035-041-181051-
/O.CAN.KPHI.FF.W.0045.000000T0000Z-260718T1345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Caroline MD-Queen Anne's MD-Talbot MD-
641 AM EDT Sat Jul 18 2026
...FLASH FLOOD WARNING IS CANCELLED FOR CENTRAL CAROLINE,
NORTHEASTERN TALBOT AND SOUTH CENTRAL QUEEN ANNE'S COUNTIES...
Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
&&
LAT...LON 3901 7591 3903 7578 3890 7573 3889 7573
3886 7593 3883 7616 3897 7616
$$
RCMThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 2:12 AM EDT | Heat Advisory | PHI | Caroline, Queen Anne's, Talbot | 17 hr |
| Jul 18, 6:09 AM EDT | Flash Flood Warning | PHI | Kent, Queen Anne's | 55 min |
| Jul 18, 4:13 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 62 min |
| Jul 18, 5:05 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 40 min |
| Jul 18, 5:14 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 61 min |
| Jul 18, 5:26 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 49 min |
| Jul 18, 5:53 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 52 min |
| Jul 18, 6:24 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 20 min |
| Jul 18, 6:25 PM EDT | Flash Flood Warning | PHI | Caroline, Talbot | 4 hr |
| Jul 18, 6:27 PM EDT | Tornado Warning | PHI | Caroline | 33 min |
| Jul 18, 6:40 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 36 min |
Nearby
Flash Flood Warnings in Maryland, 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.