Alert archive / New Jersey / Special Marine Warnings in 2021
Special Marine Warning 50, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special marine warning at Jun 21, 2021, 8:31 PM EDT. It was in force for 59 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 21, 2021, 8:31 PM EDT (00:31 UTC)
- Expired
- Jun 21, 2021, 9:30 PM EDT
- In force
- 59 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.0 in
- Wind
- 34.0 mph
The radar
The Dover AFB radar (KDOX), 48 km from the middle of the area, began a volume at 00:33 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, 0.5 hours before the alert went out and 104 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
- 1131 J/kg
- Mixed-layer CIN
- -101 J/kg
- Mixed-layer LCL
- 1172 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 165 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
757
WHUS51 KPHI 220031
SMWPHI
ANZ430-431-453>455-473-475-220130-
/O.NEW.KPHI.MA.W.0050.210622T0031Z-210622T0130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Mount Holly NJ
831 PM EDT Mon Jun 21 2021
The National Weather Service in Mount Holly NJ has issued a
* Special Marine Warning for...
Delaware Bay...
Coastal and outer waters from Great Egg Inlet NJ to Fenwick Island
DE...
* Until 930 PM EDT.
* At 830 PM EDT, showers were located near Brandywine Shoal Light,
moving southeast at 40 knots.
HAZARD...Wind gusts 34 knots or greater.
SOURCE...Radar.
IMPACT...Small craft could be damaged in briefly higher winds and
suddenly higher waves.
* Locations impacted include...
Five Fathoms Buoy, Buoy 2fb, Brown Shoal Light, Buoy 4fb, Buoy 3fb,
Fourteen Foot Bank Light, Slaughter Beach, Cape Henlopen, East
Point, Rehoboth Beach, Cape May Point, Miah Maull Light, Brandywine
Shoal Light, Indian River Inlet Bridge, Wildwood, Overfalls Shoal,
28-
Mile Wreck, Cape May Reef, Bethany Beach and Delaware Lightship
Buoy 44009.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
&&
LAT...LON 3849 7509 3853 7514 3855 7530 3864 7530
3864 7524 3875 7520 3876 7529 3883 7529
3896 7541 3900 7540 3927 7513 3926 7507
3928 7506 3914 7483 3889 7385 3876 7400
3870 7415 3861 7417 3851 7426 3826 7430
TIME...MOT...LOC 0030Z 297DEG 38KT 3904 7500
HAIL...0.00IN
WIND...>34KTS
$$
FitzsimmonsThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 8:13 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex, Warren | 62 min |
| Jun 21, 10:01 PM EDT | Special Marine Warning | PHI | 29 min | |
| Jun 22, 11:46 AM EDT | Special Marine Warning | PHI | 44 min | |
| Jun 22, 12:51 PM EDT | Special Marine Warning | PHI | 114 min | |
| Jun 22, 1:25 PM EDT | Special Marine Warning | PHI | 65 min | |
| Jun 22, 1:47 PM EDT | Special Marine Warning | PHI | 118 min | |
| Jun 22, 2:27 PM EDT | Special Marine Warning | PHI | 93 min | |
| Jun 22, 3:05 PM EDT | Small Craft Advisory | PHI | 15 hr | |
| Jun 22, 3:26 PM EDT | Special Marine Warning | PHI | 68 min | |
| Jun 21, 9:28 PM EDT | Special Weather Statement | PHI | Kent | 47 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.