Special Marine Warning 18, NWS Philadelphia/Mount Holly

Issued

May 8, 2021, 4:01 PM EDT (20:01 UTC)

Expired

May 8, 2021, 4:49 PM EDT

In force

48 min

Issued by

NWS Philadelphia/Mount Holly

Area

Storm-based polygon

Hail

0.75 in

Wind

34.0 mph

The Dover AFB radar (KDOX), 58 km from the middle of the area, began a volume at 20:00 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.

641 
WHUS51 KPHI 082001
SMWPHI
ANZ430-431-082100-
/O.NEW.KPHI.MA.W.0018.210508T2001Z-210508T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Mount Holly NJ
401 PM EDT Sat May 8 2021

The National Weather Service in Mount Holly NJ has issued a

* Special Marine Warning for...
  Delaware Bay...

* Until 500 PM EDT.

* At 401 PM EDT, a shower was located over Woodland Beach, or near
  Ship John Shoal Light, moving east at 30 knots.

  HAZARD...Wind gusts 34 knots or greater and small hail.

  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, Woodland Beach, Stony
  Point, Ship John Shoal Light and Cross Ledge Light.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Protecting yourself from immediate threats to life and safety shall
take priority.  Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.

Move to safe harbor until hazardous weather passes.

&&

LAT...LON 3951 7560 3953 7546 3946 7533 3943 7534
      3944 7529 3937 7517 3935 7518 3932 7512
      3927 7513 3926 7507 3931 7506 3925 7495
      3923 7495 3920 7487 3906 7487 3922 7559
      3928 7559 3930 7554 3937 7560
TIME...MOT...LOC 2001Z 284DEG 32KT 3930 7546 

HAIL...<.75IN
WIND...>34KTS

$$

SFJ

651 
FZUS71 KPHI 082036
MWSPHI

Marine Weather Statement
National Weather Service Mount Holly NJ
436 PM EDT Sat May 8 2021

ANZ430-431-082100-
/O.CON.KPHI.MA.W.0018.000000T0000Z-210508T2100Z/
436 PM EDT Sat May 8 2021

...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 500 PM 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 435 PM EDT, a shower was located over East Point, moving east at
30 knots.

HAZARD...Wind gusts 34 knots or greater 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 and East Point. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to safe harbor until hazardous weather passes.

&&

LAT...LON 3944 7528 3937 7517 3935 7518 3932 7512
      3927 7513 3926 7507 3929 7506 3931 7506
      3925 7495 3923 7495 3920 7487 3906 7487
      3921 7533 3943 7534
TIME...MOT...LOC 2035Z 284DEG 32KT 3922 7507 

HAIL...<.75IN
WIND...>34KTS

$$

SFJ

602 
FZUS71 KPHI 082049
MWSPHI

Marine Weather Statement
National Weather Service Mount Holly NJ
449 PM EDT Sat May 8 2021

ANZ430-431-082059-
/O.CAN.KPHI.MA.W.0018.000000T0000Z-210508T2100Z/
449 PM EDT Sat May 8 2021

...THE SPECIAL MARINE WARNING IS CANCELLED...

The affected areas were... 
Delaware Bay...

The shower has moved out of the area and no longer poses a
significant threat to boaters.

LAT...LON 3944 7528 3937 7517 3935 7518 3932 7512
      3927 7513 3926 7507 3929 7506 3931 7506
      3925 7495 3923 7495 3920 7487 3906 7487
      3921 7533 3943 7534
TIME...MOT...LOC 2047Z 284DEG 32KT 3919 7491 

$$

SFJ

Special Marine Warnings in New Jersey, 2021Every special marine warning in 2021

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.