Special Marine Warning 99, NWS Philadelphia/Mount Holly

Issued

Jul 21, 2021, 4:17 PM EDT (20:17 UTC)

Expired

Jul 21, 2021, 5:15 PM EDT

In force

58 min

Issued by

NWS Philadelphia/Mount Holly

Area

Storm-based polygon

Hail

0.75 in

Wind

34.0 mph

The Philadelphia radar (KDIX), 76 km from the middle of the area, began a volume at 20:20 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.

172 
WHUS51 KPHI 212017
SMWPHI
ANZ451-452-471-472-212115-
/O.NEW.KPHI.MA.W.0099.210721T2017Z-210721T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Mount Holly NJ
417 PM EDT Wed Jul 21 2021

The National Weather Service in Mount Holly NJ has issued a

* Special Marine Warning for...
  
Coastal and outer waters from Manasquan Inlet to Great Egg Inlet
NJ...

* Until 515 PM EDT.

* At 417 PM EDT, a severe thunderstorm was located over Brigantine,
  or near Atlantic City, moving southeast at 35 knots.

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

  SOURCE...Radar.

  IMPACT...Small craft could be damaged in briefly higher winds and 
           suddenly higher waves. Large hail could result in 
           structural damage.

* Locations impacted include...
  Atlantic City, Little Egg Reef, Atlantic City Reef, Little Egg
  Inlet, Great Egg Inlet, Brigantine and Great Egg Reef.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to safe harbor immediately as gusty winds and high waves are
expected.

Frequent lightning is occurring with this storm. If caught on the
open water, stay below deck if possible and keep away from ungrounded
metal objects.

&&

LAT...LON 3910 7398 3931 7463 3954 7435 3943 7378
TIME...MOT...LOC 2017Z 294DEG 35KT 3943 7442 

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

$$

Gorse

811 
FZUS71 KPHI 212041
MWSPHI

Marine Weather Statement
National Weather Service Mount Holly NJ
441 PM EDT Wed Jul 21 2021

ANZ451-452-471-472-212115-
/O.CON.KPHI.MA.W.0099.000000T0000Z-210721T2115Z/
441 PM EDT Wed Jul 21 2021

...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 515 PM EDT...

For the following areas...
Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20
nm...
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20
nm...
Waters from Little Egg Inlet NJ to Great Egg Inlet NJ out 20 to 40 nm
from 20 to 40 NM...
Waters from Manasquan Inlet NJ to Little Egg Inlet NJ out 20 to 40
nm...

At 441 PM EDT, a strong thunderstorm was located near Atlantic City
Reef, moving southeast at 20 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...
Atlantic City, Little Egg Reef, Atlantic City Reef, Little Egg Inlet,
Great Egg Inlet, Brigantine and Great Egg Reef.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to safe harbor immediately as gusty winds and high waves are
expected.

Frequent lightning is occurring with this storm. If caught on the
open water, stay below deck if possible and keep away from ungrounded
metal objects.

&&

LAT...LON 3910 7398 3931 7463 3954 7435 3943 7378
TIME...MOT...LOC 2041Z 299DEG 20KT 3935 7427 

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

$$

Gorse

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.