Alert archive / New Jersey / Special Marine Warnings in 2017
Special Marine Warning 21, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special marine warning at Apr 6, 2017, 3:02 PM EDT. It was in force for 58 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
- Apr 6, 2017, 3:02 PM EDT (19:02 UTC)
- Expired
- Apr 6, 2017, 4:00 PM EDT
- In force
- 58 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 40.0 mph
The radar
The Philadelphia radar (KDIX), 80 km from the middle of the area, began a volume at 19:01 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 |
|---|---|---|---|
| Apr 6, 3:14 PM EDT | MARINE TSTM WIND 49 | Ocean City, NJ |
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 12:00Z, 7.0 hours before the alert went out and 169 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
- 61 J/kg
- Mixed-layer CIN
- -145 J/kg
- Mixed-layer LCL
- 1205 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- 70 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
417
WHUS51 KPHI 061902
SMWPHI
ANZ450>455-470>473-475-062000-
/O.NEW.KPHI.MA.W.0021.170406T1902Z-170406T2000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
302 PM EDT THU APR 6 2017
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SPECIAL MARINE WARNING FOR...
COASTAL AND OUTER WATERS FROM SANDY HOOK NJ TO FENWICK ISLAND DE...
* UNTIL 400 PM EDT
* AT 300 PM EDT...STRONG THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR BUOY 2FB TO 8 NM WEST OF ASSAWOMAN BAY...MOVING
NORTHEAST AT 30 KNOTS.
HAZARD...WIND GUSTS TO 40 KNOTS AND SMALL HAIL.
SOURCE...RADAR INDICATED.
IMPACT...SMALL CRAFT COULD BE DAMAGED IN BRIEFLY HIGHER WINDS AND
SUDDENLY HIGHER WAVES.
* LOCATIONS IMPACTED INCLUDE...
ATLANTIC CITY...FIVE FATHOMS BUOY...BUOY 2FB...FENWICK ISLAND...
BUOY 4FB...SHIP BOTTOM...BUOY 3FB...DEEPWATER REEF...
GARDEN STATE SOUTH REEF...AXEL CARLSON REEF...SILVERTON...
HARVEY CEDARS...GREAT EGG REEF...OCEAN CITY REEF...
INDIAN RIVER INLET BRIDGE...LAVALLETTE...OVERFALLS SHOAL...
THE LUMP...BARNEGAT LIGHT AND NORTH BEACH HAVEN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO SAFE HARBOR UNTIL HAZARDOUS WEATHER PASSES.
&&
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 PM EDT FOR
SOUTHERN DELAWARE...AND SOUTHERN NEW JERSEY.
LAT...LON 3845 7506 3857 7513 3853 7520 3858 7528
3927 7465 3922 7473 3934 7467 3947 7443
3958 7451 3956 7437 3970 7422 3991 7413
3995 7421 4014 7411 3993 7336 3971 7330
3947 7338 3897 7374 3870 7415 3822 7431
TIME...MOT...LOC 1900Z 227DEG 29KT 3897 7458 3842 7525
HAIL...<.75IN
WIND...40KTS
$$
33The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 6, 12:29 PM EDT | Special Marine Warning | PHI | 61 min | |
| Apr 6, 1:00 PM EDT | Special Weather Statement | PHI | Salem | 60 min |
| Apr 6, 1:21 PM EDT | Special Marine Warning | PHI | 54 min | |
| Apr 6, 1:33 PM EDT | Special Marine Warning | PHI | 57 min | |
| Apr 6, 1:53 PM EDT | Special Marine Warning | PHI | 22 min | |
| Apr 6, 2:07 PM EDT | Special Weather Statement | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 6 more | 53 min |
| Apr 6, 2:15 PM EDT | Special Marine Warning | PHI | 45 min | |
| Apr 6, 2:24 PM EDT | Special Marine Warning | PHI | 36 min | |
| Apr 6, 2:29 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Cumberland, Gloucester, Salem | 4 hr |
| Apr 6, 2:56 PM EDT | Special Weather Statement | PHI | Camden, Cumberland, Gloucester, Salem | 64 min |
| Apr 6, 3:09 PM EDT | Special Marine Warning | PHI | 51 min | |
| Apr 6, 3:36 PM EDT | Special Weather Statement | PHI | Atlantic, Monmouth, Ocean | 24 min |
| Apr 6, 3:56 PM EDT | Special Weather Statement | PHI | Middlesex, Monmouth, Ocean | 49 min |
| Apr 6, 3:57 PM EDT | Areal Flood Advisory | PHI | Middlesex, Monmouth, Morris, Ocean | 4 hr |
| Apr 6, 3:59 PM EDT | Special Marine Warning | PHI | 61 min | |
| Apr 6, 4:26 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Sussex, Warren | 4 hr |
| Apr 6, 7:41 PM EDT | Areal Flood Warning | PHI | Hunterdon, Somerset | 3 hr |
| Apr 6, 11:58 AM EDT | Areal Flood Advisory | PHI | Berks, Carbon, Chester, Lehigh, Monroe, Montgomery and 1 more | 4 hr |
| Apr 6, 4:02 PM EDT | Areal Flood Advisory | PHI | Berks, Carbon, Chester, Lehigh, Monroe, Montgomery and 1 more | 6 hr |
| Apr 6, 11:59 AM EDT | Special Weather Statement | PHI | Caroline | 31 min |
| Apr 6, 12:17 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 24 min |
| Apr 6, 1:08 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 40 min |
| Apr 6, 2:13 PM EDT | Special Weather Statement | PHI | Kent, Queen Anne's, Talbot | 47 min |
| Apr 6, 4:41 PM EDT | Special Weather Statement | PHI | Talbot | 34 min |
Nearby
Special Marine Warnings in New Jersey, 2017Every special marine warning in 2017
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.