Alert archive / New Jersey / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 34, NWS Philadelphia/Mount Holly

May 14, 2010Cumberland County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 14, 2010, 9:47 PM EDT for Cumberland County, New Jersey. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 14, 2010, 9:47 PM EDT (01:47 UTC)
Expired: May 14, 2010, 10:17 PM EDT
In force: 30 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

County Cumberland County, NJ

The radar

The Dover AFB radar (KDOX), 54 km from the middle of the area, began a volume at 01:49 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 14, 3:43 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 1.8 hours before the alert went out and 149 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: 825 J/kg
Mixed-layer CIN: -152 J/kg
Mixed-layer LCL: 1318 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 196 m²/s²
0-3 km storm-relative helicity: 208 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.7

Open this sounding in Storm Lab

The text

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

869 
WUUS51 KPHI 150147
SVRPHI
NJC011-150230-
/O.NEW.KPHI.SV.W.0034.100515T0147Z-100515T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
947 PM EDT FRI MAY 14 2010

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN CUMBERLAND COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 1030 PM EDT

* AT 945 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  CEDARVILLE...OR 14 MILES SOUTHWEST OF MILLVILLE...AND MOVING EAST
  AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  NEWPORT AND CEDARVILLE AROUND 955 PM EDT...
  LAUREL LAKE...PORT NORRIS AND BIVALVE AROUND 1010 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
FRIDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY
AND EASTERN PENNSYLVANIA.

&&

LAT...LON 3918 7494 3919 7504 3920 7505 3919 7509
      3920 7518 3923 7518 3926 7524 3929 7527
      3928 7530 3930 7533 3935 7534 3940 7533
      3935 7487
TIME...MOT...LOC 0147Z 273DEG 28KT 3930 7527

$$

HAYES

2 follow-up statements

240 
WWUS51 KPHI 150201
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1001 PM EDT FRI MAY 14 2010

NJC011-150230-
/O.CON.KPHI.SV.W.0034.000000T0000Z-100515T0230Z/
CUMBERLAND NJ-
1001 PM EDT FRI MAY 14 2010

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT
FOR SOUTHERN CUMBERLAND COUNTY...

AT 958 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR NEWPORT...OR 8 MILES SOUTHWEST OF MILLVILLE...MOVING
EAST AT 30 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  LAUREL LAKE...PORT NORRIS AND BIVALVE BY 1010 PM EDT...

LAT...LON 3918 7494 3919 7504 3920 7505 3919 7509
      3920 7518 3923 7518 3926 7524 3929 7527
      3928 7530 3930 7533 3935 7534 3940 7533
      3935 7487
TIME...MOT...LOC 0201Z 273DEG 28KT 3929 7513

$$

HAYES

062 
WWUS51 KPHI 150217
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1017 PM EDT FRI MAY 14 2010

NJC011-150228-
/O.CAN.KPHI.SV.W.0034.000000T0000Z-100515T0230Z/
CUMBERLAND NJ-
1017 PM EDT FRI MAY 14 2010

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN CUMBERLAND COUNTY IS
CANCELLED...

LAT...LON 3918 7494 3919 7504 3920 7505 3919 7509
      3920 7518 3923 7518 3926 7524 3929 7527
      3928 7530 3930 7533 3935 7534 3940 7533
      3935 7487
TIME...MOT...LOC 0218Z 273DEG 28KT 3928 7496

$$

HAYES

The office that day

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

Issued	Product	Office	Counties	Lasted
May 14, 8:15 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Ocean	46 min
May 14, 8:29 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cumberland, Gloucester, Salem	61 min
May 14, 8:32 PM EDT	Special Marine Warning	PHI		88 min
May 14, 8:36 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Ocean	40 min
May 14, 8:44 PM EDT	Special Weather Statement	PHI	Burlington	61 min
May 14, 9:17 PM EDT	Special Weather Statement	PHI	Monmouth	58 min
May 14, 9:31 PM EDT	Special Weather Statement	PHI	Atlantic	59 min
May 14, 9:36 PM EDT	Special Weather Statement	PHI	Cape May	54 min
May 14, 9:49 PM EDT	Special Marine Warning	PHI		86 min
May 14, 9:57 PM EDT	Severe Thunderstorm Warning	PHI	Salem	48 min
May 14, 10:09 PM EDT	Severe Thunderstorm Warning	PHI	Cape May	37 min
May 14, 10:19 PM EDT	Special Weather Statement	PHI	Atlantic	56 min
May 14, 10:30 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic	35 min
May 14, 10:35 PM EDT	Special Weather Statement	PHI	Camden, Gloucester	55 min
May 14, 10:41 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester	49 min
May 14, 10:59 PM EDT	Special Weather Statement	PHI	Atlantic	61 min
May 14, 11:30 PM EDT	Special Weather Statement	PHI	Atlantic	45 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2010 Every severe thunderstorm warning in 2010

Sources

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.