Alert archive / Pennsylvania / Special Weather Statements in 2011

Special Weather Statement, NWS Philadelphia/Mount Holly

May 30, 2011Warren County, New Jersey; 4 counties in Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at May 30, 2011, 4:39 AM EDT for Warren County, New Jersey; 4 counties in Pennsylvania. It was in force for 66 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 30, 2011, 4:39 AM EDT (08:39 UTC)
Expired: May 30, 2011, 5:45 AM EDT
In force: 66 min
Issued by: NWS Philadelphia/Mount Holly

Counties Warren County, NJ, Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA

The radar

The Binghamton radar (KBGM), 141 km from the middle of the area, began a volume at 08:42 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 nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 8.7 hours before the alert went out and 211 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: 264 J/kg
Mixed-layer CIN: -170 J/kg
Mixed-layer LCL: 822 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 58 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.

829 
WWUS81 KPHI 300839
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
439 AM EDT MON MAY 30 2011

NJZ001-007>009-PAZ054-055-060>062-069-300945-
BERKS PA-BUCKS PA-CARBON PA-HUNTERDON NJ-LEHIGH PA-MONROE PA-
MORRIS NJ-NORTHAMPTON PA-SUSSEX NJ-WARREN NJ-
439 AM EDT MON MAY 30 2011

...STRONG THUNDERSTORMS WILL AFFECT BERKS...BUCKS...CARBON...
HUNTERDON...LEHIGH...MONROE...MORRIS...NORTHAMPTON...SUSSEX AND
WARREN COUNTIES...

AT 437 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 11 MILES SOUTHEAST 
OF SCRANTON TO 26 MILES WEST OF LEHIGHTON...MOVING SOUTHEAST AT 35 
MPH. THE THUNDERSTORMS WILL BE NEAR ALBRIGHTSVILLE...TOBYHANNA 
AROUND 445 AM...MOUNTAINHOME...MOUNTAINHOME AROUND 500 AM... 
WANAMAKERS...STORMVILLE AROUND 515 AM...FLATBROOKVILLE...NEW TRIPOLI 
AROUND 530 AM...BETHLEHEM AND FREEMANSBURG AROUND 545 AM.

WIND GUSTS TO 50 MPH AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS.

EXPECT FREQUENT LIGHTNING FROM THESE STORMS. DO NOT SEEK SHELTER 
UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS WHEN A 
THUNDERSTORM APPROACHES.

LAT...LON 4124 7513 4116 7516 4115 7509 4109 7503
      4111 7495 4118 7489 4111 7462 4076 7474
      4043 7548 4066 7596 4074 7578 4084 7594
      4091 7600 4100 7575 4103 7575 4108 7566
      4114 7565 4123 7554 4126 7515

$$

HAYES

The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 4:54 AM EDT	Special Weather Statement	PHI	Morris, Sussex	66 min
May 30, 4:59 AM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex, Warren	61 min
May 30, 5:11 AM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	64 min
May 30, 6:04 AM EDT	Special Weather Statement	PHI	Mercer, Middlesex, Monmouth, Somerset	56 min
May 30, 6:26 AM EDT	Special Weather Statement	PHI	Mercer, Middlesex, Monmouth	64 min
May 30, 6:39 AM EDT	Special Weather Statement	PHI	Ocean	66 min
May 30, 7:38 AM EDT	Special Weather Statement	PHI	Ocean	22 min
May 30, 3:11 AM EDT	Special Weather Statement	PHI	Carbon, Monroe	64 min
May 30, 3:50 AM EDT	Special Weather Statement	PHI	Carbon, Monroe	55 min

Nearby

Special Weather Statements in Pennsylvania, 2011 Special Weather Statements in New Jersey, 2011 Every special weather statement in 2011

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.