Alert archive / New Jersey / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 217, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 21, 2023, 6:52 AM EDT for Atlantic County, Cape May County, Ocean County, New Jersey. It was in force for 23 min. 3 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 21, 2023, 6:52 AM EDT (10:52 UTC)
- Expired
- Jul 21, 2023, 7:15 AM EDT
- In force
- 23 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Atlantic County, NJ, Cape May County, NJ, Ocean County, NJ
The radar
The Philadelphia radar (KDIX), 56 km from the middle of the area, began a volume at 10:54 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 21, 6:59 AM EDT | TSTM WND DMG | 1 Wsw Pleasantville, NJ | Report of 1 tree down on Portland Ave. Time estimated from radar. |
| Jul 21, 7:15 AM EDT | TSTM WND GST 41 | Atlantic City, NJ | Atlantic City Marina USGS station measured a 36 kt gust. |
| Jul 21, 7:15 AM EDT | TSTM WND GST 41 | Atlantic City, NJ | Atlantic City Marina USGS station measured a 36 kt gust. |
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 one storm report to this severe thunderstorm warning; the first came 7 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 |
|---|---|---|---|
| Jul 21, 3:13 AM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 00:00Z, 10.9 hours before the alert went out and 186 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
- 911 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 943 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 70 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.2
The text
As transmitted.
292
WUUS51 KPHI 211052
SVRPHI
NJC001-009-029-211115-
/O.NEW.KPHI.SV.W.0217.230721T1052Z-230721T1115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
652 AM EDT Fri Jul 21 2023
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southeastern Atlantic County in southern New Jersey...
South central Ocean County in southern New Jersey...
Northeastern Cape May County in southern New Jersey...
* Until 715 AM EDT.
* At 651 AM EDT, a severe thunderstorm was located near Northfield,
or 8 miles west of Atlantic City, 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...
Atlantic City, Ocean City, Pleasantville, Somers Point, Ventnor
City, Brigantine, Northfield, Absecon, Margate City, Estell Manor,
Port Republic, Longport, Corbin City, Pomona, Beesleys Point,
English Creek, Mystic Island and Linwood.
This includes the following highways...
Garden State Parkway between mile markers 27 and 48.
Atlantic City Expressway between mile markers 0 and 16.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3935 7441 3927 7456 3927 7470 3950 7471
3955 7445 3954 7444 3955 7443 3960 7420
TIME...MOT...LOC 1051Z 269DEG 23KT 3940 7461
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MJL1 follow-up statement
018
WWUS51 KPHI 211125
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
725 AM EDT Fri Jul 21 2023
NJC001-009-029-211134-
/O.EXP.KPHI.SV.W.0217.000000T0000Z-230721T1115Z/
Atlantic NJ-Ocean NJ-Cape May NJ-
725 AM EDT Fri Jul 21 2023
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ATLANTIC...SOUTH
CENTRAL OCEAN AND NORTHEASTERN CAPE MAY COUNTIES HAS EXPIRED...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been allowed to expire. However heavy
rain is still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 800 AM EDT for
southern New Jersey.
Remember, a Severe Thunderstorm Warning still remains in effect for
northeastern Atlantic County and southern Ocean County until 800 AM
EDT.
LAT...LON 3935 7441 3927 7456 3927 7470 3950 7471
3955 7445 3954 7444 3955 7443 3960 7420
TIME...MOT...LOC 1124Z 269DEG 23KT 3940 7436
$$
MJLWhat 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 Jul 21, 5:09 AM EDT, 1 hour 43 minutes earlier.
Area forecast discussion, Jul 21, 5:09 AM EDT, 1 hour 43 minutes before
Area Forecast Discussion National Weather Service Mount Holly NJ 509 AM EDT Fri Jul 21 2023 .SYNOPSIS... A warm front lifts north through the region early this morning, followed by a cold front late this afternoon. High pressure builds into the region for the weekend. Several weak disturbances will affect the area next week. && .NEAR TERM /THROUGH TONIGHT/... Line of showers and thunderstorms has moved out of southeast Pennsylvania and is moving through New Jersey and Delmarva. Will go ahead and allow Severe Thunderstorm Watch #530 to expire at 5 am. Severe Thunderstorm Watch #532 remains in effect for southern and eastern New Jersey, the eastern shores of Maryland, and Delaware until 8 am. There still remains 1000 to 1500 J/kg of surface-based CAPE for southern New Jersey and Delmarva. In addition, there is 25 to 30 kt of 0-6 km Bulk Shear. As this line of storms departs, a warm front lifts north through the region later this morning. Surface dew points rise into the lower 70s for most of the area, proving abundant moisture for potential afternoon showers and thunderstorms. The question is if skies clear out enough and temperatures warm up enough to drive instability values up. Highs should get into the low to mid 80s, and surface-based CAPE values will rise to over 2000 J/kg. A cold front will pass through the region this afternoon along with some shortwave energy. 0-6 km Bulk Shear will average 25 to 30 kt. This will touch off another round of showers and thunderstorms, mainly over New Jersey with gusty winds and heavy rain. Storms taper off fairly quickly after sunset. Cold front passes through the region, and skies clear out overnight. Depending how much rain falls today, and where it falls, there may be some patchy fog developing prior to sunrise Saturday. Lows tonight will largely be in the low to mid 60s. && .SHORT TERM /SATURDAY THROUGH SUNDAY/... High pressure builds into the Ohio Valley on Saturday, slides overhead Saturday night, and then offshore on Sunday. Dry weather, sunny skies, and low humidity levels are on tap for the weekend, possibly making this the nicest weather weekend of the summer! Highs Saturday will be in the low to mid 80s, and then highs on Sunday will top off in the mid to upper 80s as warmer air spreads in from the west. Both days will feature surface dew points in the upper 50s to low 60s. && .LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/... High pressure continues to move offshore Sunday night and will be well offshore on Monday. Another closed H5 low sets up shop in Hudson Bay, Canada, and a deep trough will extend down from that low into the Eastern U.S. Once again, mainly diurnally driven convection will affect the area as several shortwaves associated with this trough pass through the region. Based on latest guidance, there are low chances Monday and Tuesday, and then weak surface high pressure passes through the region Wednesday. Conditions should be mostly dry on Wednesday. Another weak shortwave approaches Thursday, bringing another chance for convection. Temperatures will gradually warm back up through the week, with highs topping off in the mid and upper 80s Monday and Tuesday, upper 80s to around 90 on Wednesday, and then in the low to mid 90s Thursday. Surface dew points will also eventually creep back up into the upper 60s and low 70s. && .AVIATION /09Z FRIDAY THROUGH TUESDAY/... The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas... Early this morning (through 12Z)...SHRA/TSRA with sub-VFR conditions. LGT/VRB winds, except in TSRA, the strongest of which could have gusts 40 to 50 kt. Moderate confidence. Today (12Z through 00Z)...Lingering SHRA/TSRA will taper off by 15Z. Conditions improve to VFR. Another round of SHRA/TSRA possible starting around 18Z. Brief sub-VFR conditions possible. LGT/VRB winds, becoming W-NW 5 to 10 kt. Low confidence. Tonight (00Z through 12Z)...Primarily VFR. Light NW winds. Low probability for sub-VFR VSBYs in fog. Moderate confidence. Outlook... Saturday through Sunday night...VFR. W to NW winds 10 to 15 kt with occasional gusts to 20 kt during the day, then LGT/VRB at night. High confidence. Monday through Tuesday...VFR overall. Scattered afternoon SHRA/TSRA possible. S winds 5 to 10 kt. Moderate confidence. Wednesday...VFR. SW winds 5 to 10 kts. Moderate confidence. && .MARINE... A line of showers and thunderstorms will work their way across the waters early this morning with strong thunderstorm wind gusts, lightning, and VSBY restrictions in heavy rain. Another round of thunderstorms is possible this afternoon and early evening before tapering off late. Sub-Small Craft Advisory conditions on tap. South to southeast winds will range from 10 to 15 kt with occasional gusts before turning northwest tonight, then west on Saturday. Seas will average 2 to 4 feet. Outlook... Saturday through Wednesday...A prolonged period of sub-SCA conditions expected during this time. Conditions will be dry with no showers or thunderstorms Saturday through Sunday. Isolated late day and evening showers and thunderstorms are possible Monday and Tuesday. Dry weather expected Wednesday. Winds will mostly be west to northwest 10 to 15 kts over the weekend, becoming southeasterly 10 to 15 kts Monday and Tuesday, and then southwesterly on Wednesday. Seas 2 to 4 ft. Rip Currents... Today, winds will be out of the south to southeast at 5 to 10 mph with a medium period southeast swell up to 10 seconds. As a result, there is a LOW risk for the develop of dangerous rip currents at New Jersey and Delaware beaches outside of thunderstorms. On Saturday, winds turn to the northwest at 5 to 10 mph. A light easterly swell will be in place. Once again, there will be a LOW risk for the development of dangerous rip currents at New Jersey and Delaware beaches. && .PHI WATCHES/WARNINGS/ADVISORIES... PA...None. NJ...None. DE...None. MD...None. MARINE...None. && SYNOPSIS...MPS NEAR TERM...MPS SHORT TERM...MPS LONG TERM...MPS AVIATION...MPS MARINE...MPS
Hazardous weather outlook, Jul 21, 4:49 AM EDT, 2 hours 3 minutes before
Hazardous Weather Outlook National Weather Service Mount Holly NJ 0449 AM EDT Fri Jul 21 2023 DEZ001-220849- New Castle- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for New Castle County in Delaware. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. DEZ002-220849- Kent- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Kent County in Delaware. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. DEZ003-220849- Inland Sussex- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for inland portions of Sussex County in Delaware. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. DEZ004-220849- Delaware Beaches- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for the Atlantic coastal portions of Sussex County in Delaware. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ054-220849- Carbon- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Carbon County in Pennsylvania. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ055-220849- Monroe- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Monroe County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ060-220849- Berks- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Berks County in Pennsylvania. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ061-220849- Lehigh- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Lehigh County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ062-220849- Northampton- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Northampton County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ070-220849- Delaware- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Delaware County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ071-220849- Philadelphia- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Philadelphia County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ101-220849- Western Chester- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for western Chester County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ102-220849- Eastern Chester- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for eastern Chester County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ103-220849- Western Montgomery- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for western Montgomery County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ104-220849- Eastern Montgomery- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for eastern Montgomery County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ105-220849- Upper Bucks- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for upper Bucks County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ106-220849- Lower Bucks- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for lower Bucks County in Pennsylvania. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ001-220849- Sussex- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Sussex County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ007-220849- Warren- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Warren County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ008-220849- Morris- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Morris County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ009-220849- Hunterdon- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Hunterdon County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ010-220849- Somerset- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Somerset County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ012-220849- Middlesex- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Middlesex County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ013-220849- Western Monmouth- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for western Monmouth County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ014-220849- Eastern Monmouth- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for eastern Monmouth County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ015-220849- Mercer- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Mercer County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ016-220849- Salem- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Salem County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ017-220849- Gloucester- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Gloucester County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ018-220849- Camden- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Camden County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ019-220849- Northwestern Burlington- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for northwestern Burlington County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ020-220849- Ocean- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for inland portions of Ocean County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ021-220849- Cumberland- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Cumberland County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ022-220849- Atlantic- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for inland portions of Atlantic County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ023-220849- Cape May- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Cape May County excluding the Atlantic coast in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ024-220849- Atlantic Coastal Cape May- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for the Atlantic coastal portions of Cape May County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ025-220849- Coastal Atlantic- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for coastal portions of Atlantic County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ026-220849- Coastal Ocean- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for coastal portions of Ocean County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ027-220849- Southeastern Burlington- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for southeastern Burlington County in New Jersey. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. MDZ012-220849- Kent MD- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Kent County in Maryland. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. MDZ015-220849- Queen Annes- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Queen Annes County in Maryland. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. MDZ019-220849- Talbot- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Talbot County in Maryland. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. MDZ020-220849- Caroline- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for Caroline County in Maryland. .DAY ONE...Through tonight. Several instances of flooding are possible, especially in urban and poor-drainage areas and near vulnerable small creeks and streams. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ430-220849- Delaware Bay waters north of East Point NJ to Slaughter Beach DE- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for upper Delaware Bay. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ431-220849- Delaware Bay waters south of East Point NJ to Slaughter Beach DE- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for lower Delaware Bay. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ450-220849- Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Monmouth County out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ451-220849- Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Ocean County out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ452-220849- Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Atlantic County out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ453-220849- Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Cape May County out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ454-220849- Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to the mouth of Delaware Bay out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ455-220849- Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm- 0449 AM EDT Fri Jul 21 2023 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Sussex County out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures.
In the hours before
Local storm report, Jul 21, 4:10 AM EDT, 2 hours 42 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
410 AM EDT Fri Jul 21 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0249 AM Tstm Wnd Dmg 2 W Birdsboro 40.26N 75.84W
07/21/2023 Berks PA 911 Call Center
Tree down on Cedar Hill Road.
&&
RCMLocal storm report, Jul 21, 4:22 AM EDT, 2 hours 30 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
422 AM EDT Fri Jul 21 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0302 AM Tstm Wnd Dmg 1 WNW Upper Uwchlan Twp 40.08N 75.71W
07/21/2023 Chester PA 911 Call Center
Tree down on house.
&&
RCMLocal storm report, Jul 21, 4:30 AM EDT, 2 hours 22 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
430 AM EDT Fri Jul 21 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0346 AM Tstm Wnd Dmg 2 WSW North Wales 40.20N 75.31W
07/21/2023 Montgomery PA Public
Large branch down at Morris Road and West
Point Pike.
&&
RCMSpecial weather statement, Jul 21, 4:56 AM EDT, 1 hour 56 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
456 AM EDT Fri Jul 21 2023
NJZ008-010-210930-
Morris NJ-Somerset NJ-
456 AM EDT Fri Jul 21 2023
...Strong thunderstorms will impact portions of eastern Morris and
northeastern Somerset Counties through 530 AM EDT...
At 455 AM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Green Pond to Martinsville. Movement was
east at 40 mph.
HAZARD...Wind gusts up to 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Morristown, Dover, Madison, Florham Park, East Hanover, Lincoln Park,
Kinnelon, Chatham, Boonton, Butler, Wharton, Rockaway, Morris Plains,
Mountain Lakes, Riverdale, Victory Gardens, Green Pond, Martinsville,
Millington and Parsippany.
This includes the following highways...
Interstate 78 in New Jersey between mile markers 35 and 42.
Interstate 80 in New Jersey between mile markers 35 and 48.
Interstate 287 in New Jersey between mile markers 27 and 54.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 4091 7434 4083 7433 4076 7438 4075 7436
4067 7446 4066 7445 4066 7440 4063 7442
4061 7444 4059 7457 4103 7457 4108 7450
4104 7450 4105 7445 4102 7443 4100 7430
4090 7427
TIME...MOT...LOC 0855Z 248DEG 34KT 4100 7453 4060 7455
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
RCMLocal storm report, Jul 21, 6:21 AM EDT, 31 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
621 AM EDT Fri Jul 21 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0537 AM Tstm Wnd Dmg 2 WNW Easton 38.78N 76.12W
07/21/2023 Talbot MD 911 Call Center
Tree down at Unionville Road and St.
Michaels Road.
&&
RCMLocal storm report, Jul 21, 6:36 AM EDT, 16 minutes before
Preliminary Local Storm Report...Summary
National Weather Service Mount Holly NJ
636 AM EDT Fri Jul 21 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0346 AM Tstm Wnd Dmg 2 WSW North Wales 40.20N 75.31W
07/21/2023 Montgomery PA Public
Large branch down at Morris Road and West
Point Pike.
0302 AM Tstm Wnd Dmg 1 WNW Upper Uwchlan Twp 40.08N 75.71W
07/21/2023 Chester PA 911 Call Center
Tree down on house.
0216 AM Tstm Wnd Dmg 2 WSW Wernersville 40.32N 76.11W
07/21/2023 Berks PA 911 Call Center
Tree down on Huntzinger Road.
0249 AM Tstm Wnd Dmg 2 W Birdsboro 40.26N 75.84W
07/21/2023 Berks PA 911 Call Center
Tree down on Cedar Hill Road.
0537 AM Tstm Wnd Dmg 2 WNW Easton 38.78N 76.12W
07/21/2023 Talbot MD 911 Call Center
Tree down at Unionville Road and St.
Michaels Road.
&&The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 3:10 AM EDT | Severe Thunderstorm Warning | PHI | Warren | 39 min |
| Jul 21, 4:36 AM EDT | Special Marine Warning | PHI | 54 min | |
| Jul 21, 4:56 AM EDT | Special Weather Statement | PHI | Morris | 34 min |
| Jul 21, 5:43 AM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Camden, Cumberland, Gloucester, Salem | 47 min |
| Jul 21, 6:16 AM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland | 44 min |
| Jul 21, 6:59 AM EDT | Special Marine Warning | PHI | 61 min | |
| Jul 21, 7:14 AM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Ocean | 46 min |
| Jul 21, 7:26 AM EDT | Special Marine Warning | PHI | 64 min | |
| Jul 21, 7:49 AM EDT | Special Marine Warning | PHI | 56 min | |
| Jul 21, 8:09 AM EDT | Special Marine Warning | PHI | 66 min | |
| Jul 21, 9:18 AM EDT | Special Marine Warning | PHI | 42 min | |
| Jul 21, 10:00 AM EDT | Special Marine Warning | PHI | 60 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.