Alert archive / New Jersey / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 163, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 9, 2021, 8:25 PM EDT for Atlantic County, Burlington County, Ocean County, New Jersey. It was in force for 65 min. 1 report 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 9, 2021, 8:25 PM EDT (00:25 UTC)
- Expired
- Jul 9, 2021, 9:30 PM EDT
- In force
- 65 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Atlantic County, NJ, Burlington County, NJ, Ocean County, NJ
The radar
The Philadelphia radar (KDIX), 63 km from the middle of the area, began a volume at 00:25 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 9, 9:25 PM EDT | MARINE TSTM WIND 39 | 3 Sw Beach Haven, NJ | MEASURED NEAR MCKINLEY AVENUE, IN SOUTH BEACH HAVEN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 00:00Z, 0.4 hours before the alert went out and 179 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
- 661 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 1158 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- 103 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.9
The text
As transmitted.
299
WUUS51 KPHI 100025
SVRPHI
NJC001-005-029-100130-
/O.NEW.KPHI.SV.W.0163.210710T0025Z-210710T0130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
825 PM EDT Fri Jul 9 2021
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Atlantic County in southern New Jersey...
South central Ocean County in southern New Jersey...
Southeastern Burlington County in southern New Jersey...
* Until 930 PM EDT.
* At 825 PM EDT, severe thunderstorms were located along a line
extending from near Elwood-Magnolia to near Mays Landing to near
English Creek, moving east at 30 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...
Atlantic City, Ocean City, Pleasantville, Hammonton, Somers Point,
Ventnor City, Brigantine, Northfield, Absecon, Margate City, Egg
Harbor City, Tuckerton, Estell Manor, Port Republic, Longport,
Corbin City, Elwood-Magnolia, Wading River, Pomona and Mays
Landing.
This includes the following highways...
Garden State Parkway between mile markers 28 and 56.
Atlantic City Expressway between mile markers 0 and 23.
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 3944 7429 3929 7453 3930 7456 3928 7459
3928 7461 3929 7464 3929 7466 3934 7479
3950 7473 3963 7479 3964 7416
TIME...MOT...LOC 0025Z 283DEG 25KT 3961 7472 3949 7465 3937 7472
HAIL...1.00IN
WIND...60MPH
$$
Staarmann3 follow-up statements
897
WWUS51 KPHI 100046
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
846 PM EDT Fri Jul 9 2021
NJC001-005-029-100130-
/O.CON.KPHI.SV.W.0163.000000T0000Z-210710T0130Z/
Atlantic NJ-Ocean NJ-Burlington NJ-
846 PM EDT Fri Jul 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR SOUTHEASTERN ATLANTIC...SOUTH CENTRAL OCEAN AND SOUTHEASTERN
BURLINGTON COUNTIES...
At 845 PM EDT, severe thunderstorms were located along a line
extending from near Pomona to Absecon to near Corbin City, moving
east at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Atlantic City, Ocean City, Pleasantville, Somers Point, Ventnor City,
Brigantine, Northfield, Absecon, Margate City, Egg Harbor City,
Tuckerton, Estell Manor, Port Republic, Longport, Corbin City,
Pomona, English Creek, Mystic Island and Linwood.
This includes the following highways...
Garden State Parkway between mile markers 28 and 50.
Atlantic City Expressway between mile markers 0 and 13.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3944 7429 3929 7453 3930 7456 3928 7459
3928 7461 3929 7464 3929 7466 3934 7479
3947 7463 3955 7463 3964 7416
TIME...MOT...LOC 0045Z 288DEG 26KT 3949 7451 3940 7447 3931 7467
HAIL...1.00IN
WIND...60MPH
$$
Staarmann158
WWUS51 KPHI 100059
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
859 PM EDT Fri Jul 9 2021
NJC005-100108-
/O.CAN.KPHI.SV.W.0163.000000T0000Z-210710T0130Z/
Burlington NJ-
859 PM EDT Fri Jul 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BURLINGTON COUNTY
IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 3944 7429 3929 7453 3930 7456 3928 7459
3928 7461 3929 7464 3929 7466 3934 7479
3945 7456 3951 7448 3959 7419
TIME...MOT...LOC 0058Z 283DEG 23KT 3947 7441 3938 7441 3929 7457
$$
NJC001-029-100130-
/O.CON.KPHI.SV.W.0163.000000T0000Z-210710T0130Z/
Atlantic NJ-Ocean NJ-
859 PM EDT Fri Jul 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR SOUTHEASTERN ATLANTIC AND SOUTH CENTRAL OCEAN COUNTIES...
At 858 PM EDT, severe thunderstorms were located along a line
extending from near Brigantine to near Atlantic City to near Ocean
City, moving east at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Atlantic City, Ocean City, Pleasantville, Somers Point, Ventnor City,
Brigantine, Northfield, Absecon, Margate City, Estell Manor, Port
Republic, Longport, Corbin City, English Creek, Pomona and Linwood.
This includes the following highways...
Garden State Parkway between mile markers 28 and 41.
Atlantic City Expressway between mile markers 0 and 9.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3944 7429 3929 7453 3930 7456 3928 7459
3928 7461 3929 7464 3929 7466 3934 7479
3945 7456 3951 7448 3959 7419
TIME...MOT...LOC 0058Z 283DEG 23KT 3947 7441 3938 7441 3929 7457
HAIL...1.00IN
WIND...60MPH
$$
Staarmann743
WWUS51 KPHI 100120
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
920 PM EDT Fri Jul 9 2021
NJC001-029-100130-
/O.EXP.KPHI.SV.W.0163.000000T0000Z-210710T0130Z/
Atlantic NJ-Ocean NJ-
920 PM EDT Fri Jul 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ATLANTIC AND
SOUTH CENTRAL OCEAN COUNTIES WILL EXPIRE AT 930 PM EDT...
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area offshore. Therefore, the
warning will be allowed to expire. However heavy rain is still
possible with these thunderstorms.
LAT...LON 3944 7429 3929 7453 3930 7456 3928 7459
3928 7461 3929 7464 3929 7466 3934 7479
3945 7456 3951 7448 3959 7419
TIME...MOT...LOC 0120Z 283DEG 25KT 3944 7422 3935 7422 3926 7438
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 8:09 PM EDT | Special Weather Statement | PHI | Morris, Warren | 66 min |
| Jul 9, 8:28 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Jul 9, 9:12 PM EDT | Areal Flood Advisory | PHI | Morris, Sussex | 2 hr |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2021Every 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.