Alert archive / Maryland / Flash Flood Warnings in 2026

Flash Flood Warning 55, NWS Philadelphia/Mount Holly

July 18, 2026Caroline County, Talbot County, Maryland

NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 18, 2026, 6:25 PM EDT for Caroline County, Talbot County, Maryland. It was in force for 4 hr. 2 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: Jul 18, 2026, 6:25 PM EDT (22:25 UTC)
Expired: Jul 18, 2026, 10:30 PM EDT
In force: 4 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: None

Counties Caroline County, MD, Talbot County, MD

The radar

The Dover AFB radar (KDOX), 57 km from the middle of the area, began a volume at 22:23 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
Jul 18, 6:31 PM EDT	FLASH FLOOD	2 Sse Easton, MD	Active Road Closure @ US 50 WEST BETWEEN SECOND ST AND MULBERRY DR (MM 66.0-64.0), time given in report.
Jul 18, 6:40 PM EDT	FLASH FLOOD	1 Wnw Easton, MD	Incident @ MD 33 EAST/WEST AT HAMMOND ST [Weather Closure, High Water]. All lanes closed on MD 33 due to high water. Time given in report.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 10.4 hours before the alert went out and 114 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: 1396 J/kg
Mixed-layer CIN: -112 J/kg
Mixed-layer LCL: 936 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 126 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 5.1

Open this sounding in Storm Lab

The text

As transmitted.

081 
WGUS51 KPHI 182225
FFWPHI
MDC011-041-190230-
/O.NEW.KPHI.FF.W.0055.260718T2225Z-260719T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
625 PM 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...

* Until 1030 PM EDT.

* At 625 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. The expected rainfall rate is 1.5 to 2.5 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...
  Easton, Denton, St. Michaels, Matthews, Cordova, Tanyard, Griffin, 
  Harmony and Copperville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around...don't drown when encountering flooded roads. Most 
flood deaths occur in vehicles.

&&

LAT...LON 3881 7621 3879 7622 3879 7619 3885 7620
      3888 7614 3892 7583 3891 7575 3885 7574
      3881 7577 3874 7596 3872 7623 3874 7624
      3874 7621 3875 7622 3876 7622 3876 7625
      3882 7623

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1.5-2.5 INCHES IN 1 HOUR

$$

Hoeflich

4 follow-up statements

015 
WGUS71 KPHI 182251
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
651 PM EDT Sat Jul 18 2026

MDC011-041-190230-
/O.CON.KPHI.FF.W.0055.000000T0000Z-260719T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Caroline MD-Talbot MD-
651 PM EDT Sat Jul 18 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT THIS 
EVENING FOR CENTRAL CAROLINE AND NORTHEASTERN TALBOT COUNTIES...

At 651 PM EDT, local law enforcement reported thunderstorms 
producing heavy rain with multiple reports of flooded roadways and 
high water in Easton. Between 2 and 3 inches of rain have fallen. 
The expected rainfall rate is 0.5 inches in 1 hour. Additional 
rainfall amounts up to 0.5 inches are possible in the warned area. 
Flash flooding is already occurring.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Law enforcement reported.

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, Denton, St. Michaels, Matthews, Cordova, Tanyard, Griffin, 
  Harmony and Copperville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around...don't drown when encountering flooded roads. Most 
flood deaths occur in vehicles.

&&

LAT...LON 3881 7621 3879 7622 3879 7619 3885 7620
      3888 7614 3892 7583 3891 7575 3885 7574
      3881 7577 3874 7596 3872 7623 3874 7624
      3874 7621 3875 7622 3876 7622 3876 7625
      3882 7623

FLASH FLOOD...OBSERVED
EXPECTED RAINFALL RATE...0.5 INCHES IN 1 HOUR

$$

Hoeflich

996 
WGUS71 KPHI 182325
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
725 PM EDT Sat Jul 18 2026

MDC011-041-190230-
/O.CON.KPHI.FF.W.0055.000000T0000Z-260719T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Caroline MD-Talbot MD-
725 PM EDT Sat Jul 18 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT THIS 
EVENING FOR CENTRAL CAROLINE AND NORTHEASTERN TALBOT COUNTIES...

At 725 PM EDT, local law enforcement reported thunderstorms 
producing heavy rain with multiple reports of flooded roadways and 
high water in Easton. . Between 2 and 3 inches of rain have fallen. 
Flooding impacts will continue, but no additional rainfall is 
expected. Flash flooding is already occurring.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Law enforcement reported.

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, Denton, St. Michaels, Matthews, Cordova, Tanyard, Griffin, 
  Harmony and Copperville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around...don't drown when encountering flooded roads. Most 
flood deaths occur in vehicles.

&&

LAT...LON 3881 7621 3879 7622 3879 7619 3885 7620
      3888 7614 3892 7583 3891 7575 3885 7574
      3881 7577 3874 7596 3872 7623 3874 7624
      3874 7621 3875 7622 3876 7622 3876 7625
      3882 7623

FLASH FLOOD...OBSERVED

$$

Hoeflich

832 
WGUS71 KPHI 190117
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
917 PM EDT Sat Jul 18 2026

MDC011-041-190230-
/O.CON.KPHI.FF.W.0055.000000T0000Z-260719T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Caroline MD-Talbot MD-
917 PM EDT Sat Jul 18 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT THIS 
EVENING FOR CENTRAL CAROLINE AND NORTHEASTERN TALBOT COUNTIES...

At 917 PM EDT, trained weather spotters reported thunderstorms 
producing heavy rain with reports of flooded roadways and fields in 
Easton and Royal Oak. Between 2.5 and 4 inches of rain have fallen. 
The expected rainfall rate is 0.25 inches in 1 hour. Flash flooding 
is already occurring.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Trained spotters reported.

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, Denton, St. Michaels, Matthews, Cordova, Tanyard, Griffin, 
  Harmony and Copperville.

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.

&&

LAT...LON 3881 7621 3879 7622 3879 7619 3885 7620
      3888 7614 3892 7583 3891 7575 3885 7574
      3881 7577 3874 7596 3872 7623 3874 7624
      3874 7621 3875 7622 3876 7622 3876 7625
      3882 7623

FLASH FLOOD...OBSERVED
EXPECTED RAINFALL RATE...0.25 INCHES IN 1 HOUR

$$

Hoeflich

750 
WGUS71 KPHI 190220
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
1020 PM EDT Sat Jul 18 2026

MDC011-041-190230-
/O.EXP.KPHI.FF.W.0055.000000T0000Z-260719T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Caroline MD-Talbot MD-
1020 PM EDT Sat Jul 18 2026

...FLASH FLOOD WARNING WILL EXPIRE AT 1030 PM EDT THIS EVENING FOR 
CENTRAL CAROLINE AND NORTHEASTERN TALBOT 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 3881 7621 3879 7622 3879 7619 3885 7620
      3888 7614 3892 7583 3891 7575 3885 7574
      3881 7577 3874 7596 3872 7623 3874 7624
      3874 7621 3875 7622 3876 7622 3876 7625
      3882 7623

$$

Hoeflich

The 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, 5:39 AM EDT	Flash Flood Warning	PHI	Caroline, Queen Anne's, Talbot	62 min
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 Destructive damage threat	PHI	Caroline, Queen Anne's, Talbot	49 min
Jul 18, 5:53 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Caroline, Queen Anne's, Talbot	52 min
Jul 18, 6:24 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Talbot	20 min
Jul 18, 6:27 PM EDT	Tornado Warning	PHI	Caroline	33 min
Jul 18, 6:40 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Caroline	36 min

Nearby

Flash Flood Warnings in Maryland, 2026 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.