Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 140, NWS Philadelphia/Mount Holly

August 27, 2003Bucks County, Pennsylvania; Burlington County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 27, 2003, 1:20 PM EDT for Bucks County, Pennsylvania; Burlington County, New Jersey. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 27, 2003, 1:20 PM EDT (17:20 UTC)
Expired: Aug 27, 2003, 2:00 PM EDT
In force: 40 min
Issued by: NWS Philadelphia/Mount Holly
Area: Whole counties

Counties Burlington County, NJ, Bucks County, PA

The radar

The Philadelphia radar (KDIX), 44 km from the middle of the area, began a volume at 17:22 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 5.3 hours before the alert went out and 126 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: 217 J/kg
Mixed-layer CIN: -214 J/kg
Mixed-layer LCL: 1330 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 48 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.

000 
WUUS51 KPHI 271720
SVRPHI
NJC005-PAC017-271800-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
119 PM EDT WED AUG 27 2003

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA.
  NORTHERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY.

* UNTIL 200 PM EDT.

* AT 117 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM... OVER FEASTERVILLE...MOVING EAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WOODSIDE...LEVITTOWN...FLORENCE AT 140 PM.
  BORDENTOWN...WRIGHTSTOWN AT 150 PM.

DAMAGING WINDS IN EXCESS OF 55 MPH ARE EXPECTED FROM THIS STORM. SEEK
SHELTER IN A STURDY STRUCTURE UNTIL THE STORM HAS PASSED.

FOR THE LATEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER
RADIO...YOUR LOCAL RADIO OR TELEVISION STATION...OR YOUR CABLE
TELEVISION OUTLET.

$$

LAT...LON 4016 7472 4017 7467 4011 7457 3998 7449
          4005 7486 4006 7498 4011 7497 4017 7510
          4027 7511 4028 7487

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 27, 12:17 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester	43 min
Aug 27, 12:58 PM EDT	Severe Thunderstorm Warning	PHI	Montgomery, Philadelphia	42 min
Aug 27, 1:40 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Monmouth	50 min
Aug 27, 1:44 PM EDT	Severe Thunderstorm Warning	PHI	Ocean	61 min
Aug 27, 1:59 PM EDT	Special Marine Warning	PHI		2 hr

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2003 Severe Thunderstorm Warnings in New Jersey, 2003 Every severe thunderstorm warning in 2003

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.