Alert archive / New Jersey / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 92, NWS Philadelphia/Mount Holly

June 14, 2021Kent County, New Castle County, Delaware; 4 counties in New Jersey; Kent County, Maryland

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 14, 2021, 11:42 PM EDT for Kent County, New Castle County, Delaware; 4 counties in New Jersey; Kent County, Maryland. It was in force for 63 min. 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: Jun 14, 2021, 11:42 PM EDT (03:42 UTC)
Expired: Jun 15, 2021, 12:45 AM EDT
In force: 63 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Kent County, DE, New Castle County, DE, Kent County, MD, Atlantic County, NJ, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ

The radar

The Dover AFB radar (KDOX), 63 km from the middle of the area, began a volume at 03:45 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
Jun 14, 11:48 PM EDT	TSTM WND DMG	2 Ene Blackbird, DE	DOWNED TREE AND WIRES ON GUM BUSH ROAD EAST OF BLACKBIRD LANDING ROAD. TIME ESTIMATED FROM RADAR.
Jun 14, 11:48 PM EDT	TSTM WND DMG	2 W Green Spring, DE	DOWNED WIRES NEAR BLACKBIRD FOREST ROAD. TIME ESTIMATED FROM RADAR.

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

The watch it was issued in

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

Issued	Product	Office	Lasted
Jun 14, 7:29 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 3.7 hours before the alert went out and 162 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: 464 J/kg
Mixed-layer CIN: -64 J/kg
Mixed-layer LCL: 989 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 38 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

053 
WUUS51 KPHI 150342
SVRPHI
DEC001-003-MDC029-NJC001-011-015-033-150445-
/O.NEW.KPHI.SV.W.0092.210615T0342Z-210615T0445Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1142 PM EDT Mon Jun 14 2021

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Southwestern New Castle County in northern Delaware...
  Northeastern Kent County in central Delaware...
  Northeastern Kent County in northeastern Maryland...
  Southwestern Atlantic County in southern New Jersey...
  Cumberland County in southern New Jersey...
  Southern Salem County in southern New Jersey...
  Southeastern Gloucester County in southern New Jersey...

* Until 1245 AM EDT.

* At 1142 PM EDT, severe thunderstorms were located along a line
  extending from near Rosenhayn to Newport Meadows to Green Spring,
  moving east at 20 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Minor damage to vehicles is possible. Wind damage to 
           roofs, siding, trees, and power lines is possible.

* Locations impacted include...
  Vineland, Millville, Bridgeton, Middletown, Cumberland,
  Pleasantville, Smyrna, Absecon, Buena, Laurel Lake, Clayton,
  Weymouth, Estell Manor, Newfield, Greenwich, Shiloh, Newport,
  Woodland Beach, Hancocks Bridge and Dorothy.

This includes the following highways...
 Garden State Parkway between mile markers 37 and 38.
 Atlantic City Expressway between mile markers 7 and 13.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3918 7545 3938 7583 3938 7577 3944 7577
      3956 7524 3957 7492 3942 7450
TIME...MOT...LOC 0342Z 287DEG 18KT 3947 7509 3941 7541 3932 7567 

HAIL...1.00IN
WIND...60MPH
 
$$

Staarmann

4 follow-up statements

304 
WWUS51 KPHI 150408
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1208 AM EDT Tue Jun 15 2021

MDC029-150418-
/O.CAN.KPHI.SV.W.0092.000000T0000Z-210615T0445Z/
Kent MD-
1208 AM EDT Tue Jun 15 2021

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

The storms which prompted the warning have 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 northern Delaware...and southern New Jersey.

LAT...LON 3918 7545 3931 7570 3941 7553 3956 7515
      3957 7492 3942 7451
TIME...MOT...LOC 0408Z 286DEG 18KT 3948 7489 3937 7525 3928 7552 

$$

DEC001-003-NJC001-011-015-033-150445-
/O.CON.KPHI.SV.W.0092.000000T0000Z-210615T0445Z/
New Castle DE-Kent DE-Atlantic NJ-Cumberland NJ-Salem NJ-
Gloucester NJ-
1208 AM EDT Tue Jun 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 AM EDT
FOR SOUTH CENTRAL NEW CASTLE...NORTHEASTERN KENT...SOUTHWESTERN
ATLANTIC...CUMBERLAND...SOUTHEASTERN SALEM AND SOUTHEASTERN
GLOUCESTER COUNTIES...

At 1208 AM EDT, severe thunderstorms were located along a line
extending from near Mizpah to near Fairton to near Woodland Beach,
moving east at 20 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to vehicles is possible. Wind damage to roofs, 
         siding, trees, and power lines is possible.

Locations impacted include...
Vineland, Millville, Bridgeton, Cumberland, Smyrna, Absecon, Buena,
Laurel Lake, Clayton, Estell Manor, Newfield, Greenwich, Shiloh,
Newport, Woodland Beach, Dorothy, Newport Meadows, Bricksboro, Mays
Landing and Green Spring.

This includes the following highways...
 Garden State Parkway between mile markers 37 and 38.
 Atlantic City Expressway between mile markers 7 and 12.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3918 7545 3931 7570 3941 7553 3956 7515
      3957 7492 3942 7451
TIME...MOT...LOC 0408Z 286DEG 18KT 3948 7489 3937 7525 3928 7552 

HAIL...1.00IN
WIND...60MPH
 
$$

Staarmann

909 
WWUS51 KPHI 150426
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1226 AM EDT Tue Jun 15 2021

DEC003-NJC015-150435-
/O.CAN.KPHI.SV.W.0092.000000T0000Z-210615T0445Z/
New Castle DE-Gloucester NJ-
1226 AM EDT Tue Jun 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL NEW CASTLE AND
SOUTHEASTERN GLOUCESTER COUNTIES IS CANCELLED...

The storms which prompted the warning have 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 Delaware...and southern New Jersey.

LAT...LON 3918 7545 3925 7559 3935 7526 3953 7506
      3954 7502 3951 7499 3957 7492 3942 7451
TIME...MOT...LOC 0425Z 286DEG 22KT 3950 7485 3932 7504 3924 7540 

$$

DEC001-NJC001-011-033-150445-
/O.CON.KPHI.SV.W.0092.000000T0000Z-210615T0445Z/
Kent DE-Atlantic NJ-Cumberland NJ-Salem NJ-
1226 AM EDT Tue Jun 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 AM EDT
FOR NORTHEASTERN KENT...SOUTHWESTERN ATLANTIC...CENTRAL CUMBERLAND
AND SOUTHEASTERN SALEM COUNTIES...

At 1225 AM EDT, severe thunderstorms were located along a line
extending from Mizpah to Laurel Lake to 7 miles southeast of Woodland
Beach, moving east at 25 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to vehicles is possible. Wind damage to roofs, 
         siding, trees, and power lines is possible.

Locations impacted include...
Vineland, Millville, Cumberland, Absecon, Buena, Laurel Lake, Estell
Manor, Newport, Mays Landing, Dividing Creek, Dorothy, Fairton,
Bricksboro, Cedarville, Mizpah, Port Elizabeth, South Vineland,
Rosenhayn and Leipsic.

This includes the following highways...
 Garden State Parkway between mile markers 37 and 38.
 Atlantic City Expressway between mile markers 7 and 12.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3918 7545 3925 7559 3935 7526 3953 7506
      3954 7502 3951 7499 3957 7492 3942 7451
TIME...MOT...LOC 0425Z 286DEG 22KT 3950 7485 3932 7504 3924 7540 

HAIL...1.00IN
WIND...60MPH
 
$$

Staarmann

882 
WWUS51 KPHI 150431
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1231 AM EDT Tue Jun 15 2021

NJC033-150441-
/O.CAN.KPHI.SV.W.0092.000000T0000Z-210615T0445Z/
Salem NJ-
1231 AM EDT Tue Jun 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SALEM COUNTY IS
CANCELLED...

The storms which prompted the warning have 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 Delaware...and southern New Jersey.

LAT...LON 3918 7545 3921 7551 3935 7526 3950 7495
      3956 7490 3942 7451
TIME...MOT...LOC 0431Z 287DEG 18KT 3949 7482 3931 7501 3923 7537 

$$

DEC001-NJC001-011-150445-
/O.CON.KPHI.SV.W.0092.000000T0000Z-210615T0445Z/
Kent DE-Atlantic NJ-Cumberland NJ-
1231 AM EDT Tue Jun 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 AM EDT
FOR NORTHEASTERN KENT...SOUTHWESTERN ATLANTIC AND SOUTHEASTERN
CUMBERLAND COUNTIES...

At 1231 AM EDT, severe thunderstorms were located along a line
extending from Mizpah to Port Elizabeth to 9 miles southeast of
Woodland Beach, moving east at 20 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to vehicles is possible. Wind damage to roofs, 
         siding, trees, and power lines is possible.

Locations impacted include...
Vineland, Millville, Cumberland, Absecon, Buena, Laurel Lake, Estell
Manor, Newport, Mays Landing, Dividing Creek, Dorothy, Bricksboro,
Cedarville, Mizpah, Port Elizabeth, South Vineland and Fairton.

This includes the following highways...
 Garden State Parkway between mile markers 37 and 38.
 Atlantic City Expressway between mile markers 7 and 12.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3918 7545 3921 7551 3935 7526 3950 7495
      3956 7490 3942 7451
TIME...MOT...LOC 0431Z 287DEG 18KT 3949 7482 3931 7501 3923 7537 

HAIL...1.00IN
WIND...60MPH
 
$$

Staarmann

251 
WWUS51 KPHI 150439
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1239 AM EDT Tue Jun 15 2021

DEC001-150448-
/O.CAN.KPHI.SV.W.0092.000000T0000Z-210615T0445Z/
Kent DE-
1239 AM EDT Tue Jun 15 2021

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

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

A Severe Thunderstorm Watch remains in effect until 200 AM EDT for
southern New Jersey.

LAT...LON 3933 7487 3929 7504 3935 7506 3945 7490
      3956 7490 3942 7451
TIME...MOT...LOC 0438Z 271DEG 21KT 3949 7476 3931 7495 

$$

NJC001-011-150445-
/O.CON.KPHI.SV.W.0092.000000T0000Z-210615T0445Z/
Atlantic NJ-Cumberland NJ-
1239 AM EDT Tue Jun 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 AM EDT
FOR SOUTHWESTERN ATLANTIC AND EAST CENTRAL CUMBERLAND COUNTIES...

At 1238 AM EDT, severe thunderstorms were located along a line
extending from near Weymouth to Bricksboro, moving east at 25 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Vineland, Millville, Cumberland, Absecon, Laurel Lake, Estell Manor,
Dorothy, Mays Landing, Mizpah and Port Elizabeth.

This includes the following highways...
 Garden State Parkway between mile markers 37 and 38.
 Atlantic City Expressway between mile markers 7 and 12.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3933 7487 3929 7504 3935 7506 3945 7490
      3956 7490 3942 7451
TIME...MOT...LOC 0438Z 271DEG 21KT 3949 7476 3931 7495 

HAIL...<.75IN
WIND...60MPH
 
$$

Staarmann

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 14, 8:55 PM EDT	Severe Thunderstorm Warning	PHI	New Castle	50 min
Jun 14, 11:12 PM EDT	Severe Thunderstorm Warning	PHI	Kent	63 min
Jun 14, 11:39 PM EDT	Areal Flood Advisory	PHI	Kent, New Castle	85 min
Jun 14, 11:51 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	54 min
Jun 14, 11:54 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	66 min
Jun 14, 8:08 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Middlesex, Monmouth, Somerset	52 min
Jun 14, 8:34 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester	41 min
Jun 14, 9:11 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester, Mercer, Middlesex, Monmouth and 1 more	49 min
Jun 14, 9:12 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester, Mercer, Middlesex, Monmouth and 1 more	74 min
Jun 14, 9:17 PM EDT	Flash Flood Warning	PHI	Burlington, Camden	3 hr
Jun 14, 9:29 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester	46 min
Jun 14, 9:54 PM EDT	Areal Flood Advisory	PHI	Monmouth	97 min
Jun 14, 9:58 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth	32 min
Jun 14, 10:01 PM EDT	Special Marine Warning	PHI		89 min
Jun 14, 10:07 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester, Ocean	53 min
Jun 14, 10:51 PM EDT	Special Marine Warning	PHI		114 min
Jun 14, 11:07 PM EDT	Special Marine Warning	PHI		113 min
Jun 14, 11:21 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Ocean	39 min
Jun 14, 11:47 PM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Cape May, Cumberland, Ocean, Salem	118 min
Jun 15, 12:04 AM EDT	Special Marine Warning	PHI		116 min
Jun 15, 12:12 AM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Gloucester	51 min
Jun 15, 1:00 AM EDT	Special Marine Warning	PHI		88 min
Jun 14, 10:23 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Queen Anne's	67 min
Jun 14, 10:55 PM EDT	Areal Flood Advisory	PHI	Kent, Queen Anne's	2 hr
Jun 14, 11:03 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Kent, Queen Anne's, Talbot	57 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2021 Severe Thunderstorm Warnings in Delaware, 2021 Severe Thunderstorm Warnings in Maryland, 2021 Every severe thunderstorm warning in 2021

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.