Alert archive / New Jersey / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 208, NWS Philadelphia/Mount Holly

August 10, 2008Cape May County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 10, 2008, 9:55 AM EDT for Cape May County, New Jersey. It was in force for 46 min. 2 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: Aug 10, 2008, 9:55 AM EDT (13:55 UTC)
Expired: Aug 10, 2008, 10:41 AM EDT
In force: 46 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

County Cape May County, NJ

The radar

The Dover AFB radar (KDOX), 68 km from the middle of the area, began a volume at 13:55 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
Aug 10, 9:58 AM EDT	HAIL 0.75	Rio Grande, NJ
Aug 10, 10:00 AM EDT	HAIL 0.25	Green Creek, 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, 1.9 hours before the alert went out and 145 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: 2296 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 709 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 123 m²/s²
0-3 km storm-relative helicity: 130 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 4.9

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 101355
SVRPHI
NJC009-101500-
/O.NEW.KPHI.SV.W.0208.080810T1355Z-080810T1500Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
955 AM EDT SUN AUG 10 2008

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CAPE MAY COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 1100 AM EDT

* AT 953 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR RIO GRANDE...OR ABOUT NEAR CAPE MAY...AND
  MOVING NORTHEAST AT 23 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  NORTH WILDWOOD BY 1000 AM...
  CAPE MAY COURT HOUSE...SCOTCH BONNET AND STONE HARBOR BY 1010 AM...
  GOSHEN AND AVALON BY 1015 AM...
  DENNISVILLE BY 1025 AM...
  SEA ISLE CITY AND WOODBINE BY 1030 AM...
  SEAVILLE BY 1035 AM...

LAT...LON 3922 7461 3920 7464 3918 7465 3913 7470
      3907 7471 3896 7483 3894 7488 3899 7498
      3911 7490 3915 7491 3930 7485 3925 7460
TIME...MOT...LOC 1355Z 214DEG 20KT 3902 7488

$$

JJM

1 follow-up statement

000 
WWUS51 KPHI 101441
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1041 AM EDT SUN AUG 10 2008

NJC009-101451-
/O.CAN.KPHI.SV.W.0208.000000T0000Z-080810T1500Z/
CAPE MAY NJ-
1041 AM EDT SUN AUG 10 2008

...THE SEVERE THUNDERSTORM WARNING FOR CAPE MAY COUNTY IS
CANCELLED...

THE THUNDERSTORM THAT PROMPTED THE WARNING TO BE ISSUED HAS WEAKENED.
THE SEVERE THUNDERSTORM WARNING IS CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT SUNDAY
EVENING FOR NORTHERN DELAWARE AND NEW JERSEY AND EASTERN
PENNSYLVANIA.

LAT...LON 3922 7461 3920 7464 3918 7465 3913 7470
      3907 7471 3896 7483 3894 7488 3899 7498
      3911 7490 3915 7491 3930 7485 3925 7460
TIME...MOT...LOC 1441Z 214DEG 20KT 3923 7470

$$

RNS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 9:48 AM EDT	Special Marine Warning	PHI		57 min
Aug 10, 10:11 AM EDT	Severe Thunderstorm Warning	PHI	Salem	64 min
Aug 10, 10:39 AM EDT	Severe Thunderstorm Warning	PHI	Gloucester	66 min
Aug 10, 11:17 AM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester	58 min
Aug 10, 11:32 AM EDT	Areal Flood Advisory	PHI	Camden, Gloucester	3 hr
Aug 10, 11:46 AM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	59 min
Aug 10, 11:55 AM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester	65 min
Aug 10, 11:56 AM EDT	Flash Flood Warning	PHI	Camden, Gloucester	4 hr
Aug 10, 12:05 PM EDT	Special Marine Warning	PHI		55 min
Aug 10, 12:09 PM EDT	Tornado Warning	PHI	Gloucester, Salem	36 min
Aug 10, 12:40 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester, Salem	95 min
Aug 10, 12:45 PM EDT	Severe Thunderstorm Warning	PHI	Cape May	60 min
Aug 10, 12:51 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester, Ocean	84 min
Aug 10, 12:56 PM EDT	Tornado Warning	PHI	Gloucester, Salem	34 min
Aug 10, 1:05 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Warren	115 min
Aug 10, 1:22 PM EDT	Flash Flood Warning	PHI	Gloucester, Salem	3 hr
Aug 10, 1:29 PM EDT	Tornado Warning	PHI	Camden, Gloucester, Salem	28 min
Aug 10, 1:53 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Cumberland, Gloucester, Salem	67 min
Aug 10, 2:10 PM EDT	Severe Thunderstorm Warning	PHI	Ocean	50 min
Aug 10, 2:23 PM EDT	Special Marine Warning	PHI		67 min
Aug 10, 2:36 PM EDT	Special Marine Warning	PHI		54 min
Aug 10, 2:50 PM EDT	Severe Thunderstorm Warning	PHI	Burlington	55 min
Aug 10, 3:33 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester, Salem	39 min
Aug 10, 3:44 PM EDT	Special Marine Warning	PHI		61 min
Aug 10, 3:46 PM EDT	Severe Thunderstorm Warning	PHI	Ocean	24 min
Aug 10, 4:10 PM EDT	Areal Flood Warning	PHI	Atlantic, Burlington, Camden, Gloucester, Ocean, Salem	3 hr
Aug 10, 6:36 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester, Salem	69 min
Aug 10, 6:45 PM EDT	Areal Flood Advisory	PHI	Camden, Gloucester, Salem	2 hr
Aug 10, 7:04 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cape May	56 min
Aug 10, 7:09 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Salem	66 min
Aug 10, 7:15 PM EDT	Special Marine Warning	PHI		60 min
Aug 10, 7:42 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland	56 min
Aug 10, 7:45 PM EDT	Special Marine Warning	PHI		60 min
Aug 10, 7:53 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester	67 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2008 Every severe thunderstorm warning in 2008

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.