Alert archive / New Jersey / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 103, NWS Philadelphia/Mount Holly

July 15, 2015Atlantic County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 15, 2015, 8:44 AM EDT for Atlantic County, Ocean County, New Jersey. It was in force for 46 min. 3 reports 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: Jul 15, 2015, 8:44 AM EDT (12:44 UTC)
Expired: Jul 15, 2015, 9:30 AM EDT
In force: 46 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Atlantic County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 38 km from the middle of the area, began a volume at 12:47 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
Jul 15, 9:01 AM EDT	TSTM WND GST 60	10 Ese Bass River State, NJ
Jul 15, 9:10 AM EDT	MARINE TSTM WIND 39	Tuckerton, NJ
Jul 15, 9:15 AM EDT	MARINE TSTM WIND 40	Little Sheepshead Creek, NJ

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 0.7 hours before the alert went out and 161 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 192 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 677 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: 40 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

642 
WUUS51 KPHI 151244
SVRPHI
NJC001-029-151330-
/O.NEW.KPHI.SV.W.0103.150715T1244Z-150715T1330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
844 AM EDT WED JUL 15 2015

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ  HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN ATLANTIC COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHEASTERN OCEAN COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 930 AM EDT

* AT 843 AM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM
  WAS LOCATED NEAR TUCKERTON...OR 16 MILES NORTHEAST OF ATLANTIC
  CITY...AND MOVING EAST AT 20 MPH.

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  BEACH HAVEN WEST AROUND 850 AM EDT.
  SURF CITY AROUND 900 AM EDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
MANAHAWKIN AND MYSTIC ISLAND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...DEADLY
LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION...MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

&&

LAT...LON 3969 7420 3966 7418 3969 7414 3964 7418
      3967 7421 3967 7422 3962 7420 3963 7421
      3958 7434 3955 7425 3951 7428 3950 7434
      3964 7439 3972 7412
TIME...MOT...LOC 1243Z 255DEG 17KT 3957 7428 

$$

ROBERTSON

2 follow-up statements

845 
WWUS51 KPHI 151313
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
913 AM EDT WED JUL 15 2015

NJC001-029-151330-
/O.CON.KPHI.SV.W.0103.000000T0000Z-150715T1330Z/
ATLANTIC NJ-OCEAN NJ-
913 AM EDT WED JUL 15 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 AM EDT
FOR EASTERN ATLANTIC AND SOUTHEASTERN OCEAN COUNTIES...

AT 911 AM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS 
LOCATED NEAR BEACH HAVEN...OR 18 MILES NORTHEAST OF ATLANTIC CITY... 
MOVING NORTHEAST AT 10 MPH.

THIS SEVERE STORM WILL BE NEAR...
  SURF CITY AND BEACH HAVEN WEST AROUND 925 AM EDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE MYSTIC
ISLAND AND MANAHAWKIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

&&

LAT...LON 3955 7436 3958 7436 3970 7419 3971 7415
      3970 7417 3966 7418 3969 7414 3964 7418
      3967 7421 3967 7422 3962 7420 3963 7421
      3958 7434 3955 7425 3951 7428 3950 7434
TIME...MOT...LOC 1311Z 234DEG 9KT 3956 7423 

$$

ROBERTSON

287 
WWUS51 KPHI 151327
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
927 AM EDT WED JUL 15 2015

NJC001-029-151336-
/O.EXP.KPHI.SV.W.0103.000000T0000Z-150715T1330Z/
ATLANTIC NJ-OCEAN NJ-
927 AM EDT WED JUL 15 2015

...THE SEVERE THUNDERSTORM WARNING FOR ATLANTIC AND SOUTHEASTERN
OCEAN COUNTIES WILL EXPIRE AT 930 AM EDT...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR 
PROPERTY. THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. PERIODS 
OF HEAVY RAINFALL AND FREQUENT LIGHTNING WILL CONTINUE 
WITH THUNDERSTORMS ACROSS THE AREA THROUGH THE MORNING.

LAT...LON 3955 7436 3958 7436 3970 7419 3971 7415
      3970 7417 3966 7418 3969 7414 3964 7418
      3967 7421 3967 7422 3962 7420 3963 7421
      3958 7434 3955 7425 3951 7428 3950 7434
TIME...MOT...LOC 1325Z 255DEG 17KT 3956 7423 

$$

ROBERTSON

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 15, 5:04 AM EDT	Special Weather Statement	PHI	Gloucester	41 min
Jul 15, 5:36 AM EDT	Flash Flood Warning	PHI	Burlington, Camden, Gloucester, Salem	4 hr
Jul 15, 5:59 AM EDT	Special Weather Statement	PHI	Burlington, Camden	46 min
Jul 15, 6:04 AM EDT	Special Weather Statement	PHI	Salem	56 min
Jul 15, 6:51 AM EDT	Areal Flood Advisory	PHI	Morris, Sussex, Warren	4 hr
Jul 15, 7:00 AM EDT	Special Weather Statement	PHI	Atlantic	30 min
Jul 15, 7:10 AM EDT	Areal Flood Advisory	PHI	Cumberland, Gloucester, Salem	2 hr
Jul 15, 7:22 AM EDT	Flash Flood Warning	PHI	Morris, Sussex, Warren	4 hr
Jul 15, 7:30 AM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Camden, Cumberland, Gloucester, Salem	4 hr
Jul 15, 8:16 AM EDT	Special Weather Statement	PHI	Atlantic	44 min
Jul 15, 8:29 AM EDT	Special Weather Statement	PHI	Atlantic	31 min
Jul 15, 8:39 AM EDT	Special Marine Warning	PHI		51 min
Jul 15, 8:43 AM EDT	Flash Flood Warning	PHI	Atlantic, Burlington, Ocean	4 hr
Jul 15, 8:50 AM EDT	Special Marine Warning	PHI		40 min
Jul 15, 9:12 AM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester, Hunterdon, Mercer, Monmouth and 1 more	4 hr
Jul 15, 9:28 AM EDT	Special Marine Warning	PHI		62 min
Jul 15, 9:34 AM EDT	Special Marine Warning	PHI		26 min
Jul 15, 9:55 AM EDT	Special Marine Warning	PHI		65 min
Jul 15, 10:01 AM EDT	Special Marine Warning	PHI		59 min
Jul 15, 10:05 AM EDT	Special Weather Statement	PHI	Cumberland	25 min
Jul 15, 10:51 AM EDT	Special Marine Warning	PHI		54 min
Jul 15, 12:46 PM EDT	Areal Flood Warning	PHI	Atlantic, Burlington, Ocean	4 hr
Jul 15, 6:06 PM EDT	Areal Flood Advisory	PHI	Somerset	4 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 2015 Every severe thunderstorm warning in 2015

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.