Alert archive / Maryland / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 371, NWS Philadelphia/Mount Holly

September 4, 2026Caroline County, Talbot County, Maryland; Kent County, Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 4, 2026, 12:52 AM EDT for Caroline County, Talbot County, Maryland; Kent County, Sussex County, Delaware. It was in force for 53 min. 4 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: Sep 4, 2026, 12:52 AM EDT (04:52 UTC)
Expired: Sep 4, 2026, 1:45 AM EDT
In force: 53 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Kent County, DE, Sussex County, DE, Caroline County, MD, Talbot County, MD

The radar

The Dover AFB radar (KDOX), 28 km from the middle of the area, began a volume at 04:53 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
Sep 4, 1:08 AM EDT	TSTM WND DMG	6 Wnw Bridgeville, DE	DelDOT reported trees down which are blocking Trinity Church Road in Bridgeville. Time estimated from radar.
Sep 4, 1:25 AM EDT	TSTM WND DMG	1 Wnw Lincoln, DE	DelDOT reported trees down which are blocking Johnson Road in Lincoln. Time estimated from radar.
Sep 4, 1:31 AM EDT	TSTM WND GST 58	Delaware Coastal Airpor, DE	Georgetown (GED) measured a 50 kt wind gust.
Sep 4, 1:32 AM EDT	TSTM WND DMG	2 E Harbeson, DE	DelDOT reported trees down and blocking Cool Spring Road in Milton. Time estimated from radar.

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 4 storm reports to this severe thunderstorm warning; the first came 16 minutes after it went out.

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Sep 3, 8:38 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 4.9 hours before the alert went out and 143 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: 2290 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 1425 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 92 m²/s²
0-3 km storm-relative helicity: 80 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 8.7

Open this sounding in Storm Lab

The text

As transmitted.

671 
WUUS51 KPHI 040452
SVRPHI
DEC001-005-MDC011-041-040545-
/O.NEW.KPHI.SV.W.0371.260904T0452Z-260904T0545Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1252 AM EDT Fri Sep 4 2026

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Central Sussex County in southern Delaware...
  Southwestern Kent County in central Delaware...
  Northeastern Talbot County in eastern Maryland...
  Southern Caroline County in eastern Maryland...

* Until 145 AM EDT.

* At 1252 AM EDT, a severe thunderstorm was located over Griffin, or
  10 miles northeast of Easton, moving east at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Damage to roofs, siding, trees, and power lines is 
           possible.

* Locations impacted include...
  Georgetown, Seaford, Denton, Millsboro, Harrington, Lewes, Milton,
  Bridgeville, Ellendale, Queen Anne, Harmony, Smithville, Agner,
  Matthews, Griffin, Andrewsville, Greenwood, Hillsboro, and
  Farmington.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3876 7601 3892 7596 3892 7595 3893 7595
      3895 7578 3883 7516 3857 7524
TIME...MOT...LOC 0452Z 283DEG 37KT 3883 7590 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Hoeflich

3 follow-up statements

799 
WWUS51 KPHI 040515
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
115 AM EDT Fri Sep 4 2026

MDC011-041-040525-
/O.CAN.KPHI.SV.W.0371.000000T0000Z-260904T0545Z/
Talbot MD-Caroline MD-
115 AM EDT Fri Sep 4 2026

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN TALBOT AND
SOUTHERN CAROLINE COUNTIES IS CANCELLED...

The severe thunderstorm which prompted the warning has moved out of 
the warned area.  Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 200 AM EDT for
central and southern Delaware.

LAT...LON 3870 7571 3893 7572 3882 7516 3857 7524
TIME...MOT...LOC 0515Z 283DEG 37KT 3878 7560 

$$

DEC001-005-040545-
/O.CON.KPHI.SV.W.0371.000000T0000Z-260904T0545Z/
Sussex DE-Kent DE-
115 AM EDT Fri Sep 4 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 AM EDT
FOR CENTRAL SUSSEX AND SOUTHWESTERN KENT COUNTIES...

At 115 AM EDT, a severe thunderstorm was located over Bridgeville, or
13 miles northwest of Georgetown, moving east at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Damage to roofs, siding, trees, and power lines is 
         possible.

Locations impacted include...
Georgetown, Millsboro, Lewes, Milton, Bridgeville, Ellendale,
Andrewsville, Greenwood, and Farmington.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3870 7571 3893 7572 3882 7516 3857 7524
TIME...MOT...LOC 0515Z 283DEG 37KT 3878 7560 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Hoeflich

070 
WWUS51 KPHI 040530
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
130 AM EDT Fri Sep 4 2026

DEC001-040540-
/O.CAN.KPHI.SV.W.0371.000000T0000Z-260904T0545Z/
Kent DE-
130 AM EDT Fri Sep 4 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN KENT COUNTY IS
CANCELLED...

The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 200 AM EDT for
central and southern Delaware.

LAT...LON 3866 7554 3889 7550 3882 7516 3861 7523
      3859 7523
TIME...MOT...LOC 0530Z 283DEG 37KT 3874 7540 

$$

DEC005-040545-
/O.CON.KPHI.SV.W.0371.000000T0000Z-260904T0545Z/
Sussex DE-
130 AM EDT Fri Sep 4 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 AM EDT
FOR CENTRAL SUSSEX COUNTY...

At 130 AM EDT, a severe thunderstorm was located near Georgetown,
moving east at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Damage to roofs, siding, trees, and power lines is 
         possible.

Locations impacted include...
Georgetown, Lewes, Milton, and Ellendale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3866 7554 3889 7550 3882 7516 3861 7523
      3859 7523
TIME...MOT...LOC 0530Z 283DEG 37KT 3874 7540 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Hoeflich

819 
WWUS51 KPHI 040543
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
143 AM EDT Fri Sep 4 2026

DEC005-040552-
/O.EXP.KPHI.SV.W.0371.000000T0000Z-260904T0545Z/
Sussex DE-
143 AM EDT Fri Sep 4 2026

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL SUSSEX COUNTY WILL
EXPIRE AT 145 AM EDT...

The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A new Severe Thunderstorm Warning was issued for the eastern part of 
Sussex County. Refer to that bulletin for the updated information. 

A Severe Thunderstorm Watch remains in effect until 200 AM EDT for
central and southern Delaware.

LAT...LON 3866 7554 3889 7550 3882 7516 3861 7523
      3859 7523
TIME...MOT...LOC 0542Z 283DEG 37KT 3873 7538 

$$

Hoeflich

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Sep 3, 8:57 PM EDT, 3 hours 55 minutes earlier. Its key messages:

1. A Severe Thunderstorm Watch is now in effect for Delmarva, southern New Jersey, and Chester county. 2. The Labor Day Weekend will feature mostly dry weather with at or below normal temperatures and lower humidity.

Area forecast discussion, Sep 3, 8:57 PM EDT, 3 hours 55 minutes before

Area Forecast Discussion
National Weather Service Mount Holly NJ
857 PM EDT Thu Sep 3 2026

.WHAT HAS CHANGED...
Severe Thunderstorm Watch 652 is now in effect.

&&

.KEY MESSAGES...
1. A Severe Thunderstorm Watch is now in effect for Delmarva,
southern New Jersey, and Chester county.

2. The Labor Day Weekend will feature mostly dry weather with
at or below normal temperatures and lower humidity.

&&

.DISCUSSION...
KEY MESSAGE 1...A Severe Thunderstorm Watch is now in effect
for Delmarva, southern New Jersey, and Chester county.

Severe thunderstorms over western and central Pennsylvania are
tracking to the east-southeast, and will move into an unstable
airmass with DCAPE from 1000-1400 J/kg over southeast
Pennsylvania, southern New Jersey and Delmarva. SBCAPE Values
are in excess of 2000J/kg, and there is 30-40 kt of 0-6 km Bulk
Shear. Thunderstorms should hold together enough despite lack of
diurnal heating due to the instability over the area to produce
severe weather, generally in the form of damaging winds, but
cannot rule out large hail.

In addition, local flash flooding is possible with the
thunderstorms. There is limited confidence in which areas will
receive any flooding, and also with greater storm motion, it's
probable that flooding may be limited. For these reasons, we
have not considered any flood watches attm.

KEY MESSAGE 2...The Labor Day Weekend will feature mostly dry
weather with at or below normal temperatures and lower humidity.

By Saturday, the trend among model guidance shows the frontal
boundary south of our region, with Canadian high pressure
building in across the Northeast and Mid-Atlantic. This will
largely end any shower and thunderstorm potential. Thus, Labor
Day Weekend is still shaping up to feature nice weather, with
temperatures trending at or slightly below normal and lower
humidity.

&&

.AVIATION /00Z FRIDAY THROUGH TUESDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.

Tonight...VFR initially. A wave of SHRA/TSRA will impact the
terminals during the overnight hours, and the strongest storms
will be capable of IFR VSBYs. Otherwise, BR develops late with
MVFR VSBYs. Light W-SW winds this evening, becoming LGT/VRB.
Low confidence.

Friday...Any BR in the morning will lift and dissipate, then
VFR. Another round of SHRA/TSRA may impact the terminals late
in the afternoon and in the evening, but confidence is too low
to warrant inclusion in the TAFs. W-NW winds around 10 kt with a
few gusts to 20 kt possible in the morning. Low confidence on
TSRA potential.

Outlook...

Friday night... VFR expected. Patchy rural fog possible.

Saturday through Tuesday...Primarily VFR conditions expected.

&&

.MARINE...
Winds and seas are expected to stay below Small
Craft Advisory conditions. A prevailing West to Southwest wind
expected. Later today and into the overnight periods winds will
be light and somewhat variable. TSTMs will create locally
hazardous winds and seas overnight. Scattered showers/TSTMs for
Friday.

Outlook...

Saturday through Tuesday...Sub-SCA conditions are expected through
the period.

Rip Currents...

For Friday, winds turn offshore, with west/northwest winds 10
MPH or less. Breaking waves also around 2 feet or less expected
with a dominant period of 8 seconds. With relatively tranquil
conditions in the surf zone, a LOW risk for rip currents is
expected at all beaches.

For Saturday, winds turn more northerly, though still light.
Similar surf zone conditions expected at all beaches will result
in another LOW risk for all shore points to start the holiday
weekend.

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...None.
NJ...None.
DE...None.
MD...None.
MARINE...None.

&&

DISCUSSION...Fitzsimmons/Guzzo/MPS/OHara
AVIATION...Fitzsimmons/Guzzo/MPS/OHara
MARINE...Fitzsimmons/Guzzo/Hoeflich/OHara

Hazardous weather outlook, Sep 3, 4:36 AM EDT, 20 hours 16 minutes before

Hazardous Weather Outlook
National Weather Service Mount Holly NJ
436 AM EDT Thu Sep 3 2026

MDZ012-015-019-020-040845-
Kent MD-Queen Annes-Talbot-Caroline-
436 AM EDT Thu Sep 3 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for northeast Maryland.

.DAY ONE...Today and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Heat Advisory.

Severe thunderstorms are possible today into tonight. Heat indicies
will be in the 105 to 108 range this afternoon.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 3, 11:59 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Caroline, Queen Anne's, Talbot	61 min
Sep 4, 12:18 AM EDT	Severe Thunderstorm Warning Destructive damage threat	PHI	Caroline, Queen Anne's, Talbot	42 min
Sep 4, 1:35 AM EDT	Severe Thunderstorm Warning	PHI	Sussex	25 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2026 Severe Thunderstorm Warnings in Delaware, 2026 Every severe thunderstorm 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.