Alert archive / New Jersey / Special Marine Warnings in 2021
Special Marine Warning 45, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special marine warning at Jun 14, 2021, 11:07 PM EDT. It was in force for 113 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 14, 2021, 11:07 PM EDT (03:07 UTC)
- Expired
- Jun 15, 2021, 1:00 AM EDT
- In force
- 113 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.0 in
- Wind
- 40.0 mph
The radar
The Dover AFB radar (KDOX), 60 km from the middle of the area, began a volume at 03:08 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.
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 00:00Z, 3.1 hours before the alert went out and 159 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
- 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
The text
As transmitted.
354
WHUS51 KPHI 150307
SMWPHI
ANZ430-431-150500-
/O.NEW.KPHI.MA.W.0045.210615T0307Z-210615T0500Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Mount Holly NJ
1107 PM EDT Mon Jun 14 2021
The National Weather Service in Mount Holly NJ has issued a
* Special Marine Warning for...
Delaware Bay...
* Until 100 AM EDT.
* At 1107 PM EDT, strong thunderstorms were located along a line
extending from near Stony Point to 7 nm southeast of Turkey Point,
moving east at 20 knots.
HAZARD...Wind gusts to 40 knots.
SOURCE...Radar.
IMPACT...Small craft could be damaged in briefly higher winds and
suddenly higher waves.
* Locations impacted include...
Fortesque Beach, Sea Breeze, East Point, Bowers Beach, Woodland
Beach, Stony Point, Ship John Shoal Light, Cross Ledge Light and
Miah Maull Light.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to safe harbor until hazardous weather passes.
&&
LAT...LON 3953 7562 3956 7542 3954 7537 3951 7539
3943 7534 3946 7520 3935 7518 3927 7513
3926 7507 3929 7506 3944 7506 3932 7492
3922 7494 3904 7546 3918 7547 3921 7557
3927 7561 3930 7554 3940 7562
TIME...MOT...LOC 0307Z 288DEG 18KT 3945 7547 3936 7589
HAIL...0.00IN
WIND...40KTS
$$
Staarmann2 follow-up statements
381
FZUS71 KPHI 150344
MWSPHI
Marine Weather Statement
National Weather Service Mount Holly NJ
1144 PM EDT Mon Jun 14 2021
ANZ430-431-150500-
/O.CON.KPHI.MA.W.0045.000000T0000Z-210615T0500Z/
1144 PM EDT Mon Jun 14 2021
...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 100 AM EDT...
For the following areas...
Delaware Bay waters north of East Point NJ to Slaughter Beach DE...
Delaware Bay waters south of East Point NJ to Slaughter Beach DE...
At 1144 PM EDT, strong thunderstorms were located along a line
extending from 6 nm north of Sea Breeze to 10 nm west of Woodland
Beach, moving east at 15 knots.
HAZARD...Wind gusts to nearly 50 knots and small hail.
SOURCE...Radar indicated.
IMPACT...Small craft could be damaged in briefly higher winds and
suddenly higher waves.
Locations impacted include...
Fortesque Beach, Sea Breeze, East Point, Bowers Beach, Woodland
Beach, Stony Point, Ship John Shoal Light, Cross Ledge Light and Miah
Maull Light.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to safe harbor until hazardous weather passes.
&&
LAT...LON 3950 7562 3954 7538 3951 7539 3943 7534
3946 7520 3935 7518 3927 7513 3926 7507
3929 7506 3944 7506 3932 7492 3923 7495
3922 7494 3904 7546 3918 7547 3921 7557
3927 7561 3930 7554 3940 7562
TIME...MOT...LOC 0344Z 284DEG 17KT 3942 7528 3933 7570
HAIL...<.75IN
WIND...49KTS
$$
Staarmann294
FZUS71 KPHI 150440
MWSPHI
Marine Weather Statement
National Weather Service Mount Holly NJ
1240 AM EDT Tue Jun 15 2021
ANZ430-431-150500-
/O.CON.KPHI.MA.W.0045.000000T0000Z-210615T0500Z/
1240 AM EDT Tue Jun 15 2021
...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 100 AM EDT...
For the following areas...
Delaware Bay waters north of East Point NJ to Slaughter Beach DE...
Delaware Bay waters south of East Point NJ to Slaughter Beach DE...
At 1240 AM EDT, strong thunderstorms were located along a line
extending from 6 nm northeast of East Point to Miah Maull Light,
moving southeast at 20 knots.
HAZARD...Wind gusts 34 knots or greater.
SOURCE...Radar indicated.
IMPACT...Small craft could be damaged in briefly higher winds and
suddenly higher waves.
Locations impacted include...
Fortesque Beach, Cross Ledge Light, East Point, Bowers Beach and Miah
Maull Light.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to safe harbor until hazardous weather passes.
&&
LAT...LON 3940 7519 3935 7518 3927 7513 3926 7507
3929 7506 3944 7506 3932 7492 3923 7495
3922 7494 3904 7546 3918 7547
TIME...MOT...LOC 0440Z 297DEG 22KT 3928 7494 3912 7525
HAIL...0.00IN
WIND...>34KTS
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| 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, 8:55 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester | 50 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, 11:21 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Ocean | 39 min |
| Jun 14, 11:42 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cumberland, Gloucester, Salem | 63 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, 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 |
Nearby
Special Marine Warnings in New Jersey, 2021Every special marine 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.