Alert archive / New Jersey / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 263, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 29, 2023, 6:33 PM EDT for Cape May County, New Jersey. It was in force for 42 min. 6 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 29, 2023, 6:33 PM EDT (22:33 UTC)
- Expired
- Jul 29, 2023, 7:15 PM EDT
- In force
- 42 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Cape May County, NJ
The radar
The Dover AFB radar (KDOX), 60 km from the middle of the area, began a volume at 22:32 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 29, 6:45 PM EDT | TSTM WND GST 40 | Dennis Twp Njwxnet, NJ | NJWxNet gauge at Dennis Twp. |
| Jul 29, 6:54 PM EDT | TSTM WND GST 48 | 1 Ssw North Cape May, NJ | USGS gauge at Cape May Ferry. |
| Jul 29, 6:54 PM EDT | TSTM WND GST 48 | 1 Ssw North Cape May, NJ | USGS gauge at Cape May Ferry. |
| Jul 29, 6:55 PM EDT | TSTM WND GST 45 | 2 Se Woodbine, NJ | Mesonet station NJ55 Woodbine. |
| Jul 29, 6:55 PM EDT | TSTM WND GST 45 | 2 Se Woodbine, NJ | NJWxNet gauge at Woodbine. |
| Jul 29, 6:57 PM EDT | TSTM WND DMG | Seaville, NJ | Trees and wires down on East Katherine Avenue in Upper Township. 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 |
|---|---|---|---|
| Jul 29, 2:48 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 10.6 hours before the alert went out and 140 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
- 245 J/kg
- Mixed-layer CIN
- -215 J/kg
- Mixed-layer LCL
- 1190 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 179 m²/s²
- 0-3 km storm-relative helicity
- 159 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
497
WUUS51 KPHI 292233
SVRPHI
NJC009-292315-
/O.NEW.KPHI.SV.W.0263.230729T2233Z-230729T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
633 PM EDT Sat Jul 29 2023
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Cape May County in southern New Jersey...
* Until 715 PM EDT.
* At 633 PM EDT, severe thunderstorms were located along a line
extending from near Bivalve to 11 miles northwest of North Cape May
to near Big Stone Beach, 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...
Ocean City, Cape May, North Wildwood, Wildwood Crest, Woodbine, Sea
Isle City, Avalon, West Cape May, Stone Harbor, Cape May Court
House, Scotch Bonnet, Seaville, Diamond Beach, Green Creek,
Dennisville, Goshen, Strathmere, Rio Grande, North Cape May and
Belleplain Forest.
This includes Garden State Parkway between mile markers 0 and 23.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
In addition to large hail and damaging winds, frequent cloud to
ground lightning is occurring with these storms. Move indoors
immediately. Remember, if you can hear thunder, you are close enough
to be struck by lightning.
&&
LAT...LON 3927 7488 3923 7461 3910 7467 3892 7484
3891 7498 3900 7499 3916 7491
TIME...MOT...LOC 2233Z 282DEG 38KT 3919 7510 3907 7513 3895 7526
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Staarmann1 follow-up statement
802
WWUS51 KPHI 292253
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
653 PM EDT Sat Jul 29 2023
NJC009-292315-
/O.CON.KPHI.SV.W.0263.000000T0000Z-230729T2315Z/
Cape May NJ-
653 PM EDT Sat Jul 29 2023
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR CAPE MAY COUNTY...
At 653 PM EDT, severe thunderstorms were located along a line
extending from Dennisville to Rio Grande to near West Cape May,
moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Ocean City, Cape May, North Wildwood, Wildwood Crest, Woodbine, Sea
Isle City, Avalon, West Cape May, Stone Harbor, Cape May Court House,
Scotch Bonnet, Seaville, Diamond Beach, Green Creek, Dennisville,
Goshen, Strathmere, Rio Grande, North Cape May and Belleplain Forest.
This includes Garden State Parkway between mile markers 0 and 23.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with this storm, and
the storm will affect the beaches. For your safety, immediately move
off the beach and seek shelter indoors.
&&
LAT...LON 3927 7488 3923 7461 3910 7467 3892 7484
3891 7498 3900 7499 3916 7491
TIME...MOT...LOC 2253Z 281DEG 38KT 3921 7481 3903 7489 3891 7499
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 8:04 PM EDT | Severe Thunderstorm Warning | PHI | Salem | 41 min |
| Jul 28, 8:33 PM EDT | Special Weather Statement | PHI | Cumberland, Gloucester, Salem | 42 min |
| Jul 28, 8:36 PM EDT | Special Marine Warning | PHI | 54 min | |
| Jul 28, 9:02 PM EDT | Special Weather Statement | PHI | Camden | 43 min |
| Jul 28, 9:18 PM EDT | Special Weather Statement | PHI | Cape May, Cumberland, Salem | 42 min |
| Jul 28, 9:32 PM EDT | Special Marine Warning | PHI | 58 min | |
| Jul 28, 9:44 PM EDT | Special Weather Statement | PHI | Burlington, Camden, Mercer, Middlesex | 61 min |
| Jul 28, 10:00 PM EDT | Special Weather Statement | PHI | Atlantic, Cape May | 45 min |
| Jul 28, 10:28 PM EDT | Special Marine Warning | PHI | 62 min | |
| Jul 28, 10:54 PM EDT | Special Weather Statement | PHI | Cumberland, Salem | 36 min |
| Jul 28, 11:15 PM EDT | Special Weather Statement | PHI | Cape May | 30 min |
| Jul 28, 11:26 PM EDT | Special Marine Warning | PHI | 94 min | |
| Jul 29, 12:43 AM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland | 47 min |
| Jul 29, 12:55 AM EDT | Special Marine Warning | PHI | 65 min | |
| Jul 29, 4:55 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Gloucester, Salem | 50 min |
| Jul 29, 5:05 PM EDT | Special Marine Warning | PHI | 85 min | |
| Jul 29, 5:38 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Camden, Cumberland, Gloucester, Salem | 52 min |
| Jul 29, 5:44 PM EDT | Severe Thunderstorm Warning | PHI | Salem | 46 min |
| Jul 29, 5:51 PM EDT | Special Marine Warning | PHI | 114 min | |
| Jul 29, 6:07 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland, Salem | 68 min |
| Jul 29, 6:13 PM EDT | Special Weather Statement | PHI | Morris, Sussex | 32 min |
| Jul 29, 6:13 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Somerset | 47 min |
| Jul 29, 6:26 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester, Salem | 49 min |
| Jul 29, 6:28 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Ocean | 47 min |
| Jul 29, 6:41 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Somerset | 49 min |
| Jul 29, 6:46 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester | 44 min |
| Jul 29, 6:51 PM EDT | Special Marine Warning | PHI | 54 min | |
| Jul 29, 7:19 PM EDT | Special Marine Warning | PHI | 56 min | |
| Jul 29, 7:19 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 26 min |
| Jul 29, 7:35 PM EDT | Special Weather Statement | PHI | Monmouth | 70 min |
| Jul 29, 7:53 PM EDT | Special Marine Warning | PHI | 97 min | |
| Jul 29, 7:54 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Monmouth, Ocean | 40 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2023Every severe thunderstorm warning in 2023
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.