Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 88, NWS Philadelphia/Mount Holly

June 22, 2006Bucks County, Lehigh County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 22, 2006, 10:56 PM EDT for Bucks County, Lehigh County, Pennsylvania. It was in force for 25 min. 1 report 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
Jun 22, 2006, 10:56 PM EDT (02:56 UTC)
Expired
Jun 22, 2006, 11:21 PM EDT
In force
25 min
Issued by
NWS Philadelphia/Mount Holly
Area
Counties, with a storm outline in the text

Counties Bucks County, PA, Lehigh County, PA

The radar

The Philadelphia radar (KDIX), 98 km from the middle of the area, began a volume at 02:57 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

TimeReportWhereRemark
Jun 22, 11:00 PM EDTTSTM WND DMG4 Se Allentown, PATREES DOWN IN SOUTH WHITEHALL TOWNSHIP AND UPPER SAUCON TOWNSHIP.

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

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 2.9 hours before the alert went out and 205 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-pSkew-T log-p diagram, Brookhaven, NY at 00:00Z on 2006-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 223 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 2006-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 142 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
223 J/kg
Mixed-layer CIN
-152 J/kg
Mixed-layer LCL
1136 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
142 m²/s²
0-3 km storm-relative helicity
163 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 230257
SVRPHI
PAC017-077-230345-
/O.NEW.KPHI.SV.W.0088.060623T0256Z-060623T0345Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1056 PM EDT THU JUN 22 2006

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN LEHIGH COUNTY IN EASTERN PENNSYLVANIA
  THIS INCLUDES THE CITY OF ALLENTOWN
  NORTHWESTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA

* UNTIL 1145 PM EDT

* AT 1053 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  RAPIDLY DEVELOPING SEVERE THUNDERSTORM CAPABLE OF PRODUCING 
  DAMAGING WINDS IN EXCESS OF 60 MPH ALONG WITH PENNY SIZE
  HAIL.  THIS STORM WAS LOCATED NEAR EMMAUS...OR ABOUT NEAR
  ALLENTOWN...AND MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  QUAKERTOWN BY 1105 PM EDT...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

IN ADDITION TO HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

LAT...LON 4064 7542 4061 7540 4058 7541 4054 7535
      4061 7522 4055 7518 4055 7509 4053 7507
      4043 7507 4039 7497 4036 7498 4048 7557
      4065 7551

$$

TFG
1 follow-up statement
000 
WWUS51 KPHI 230321
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1120 PM EDT THU JUN 22 2006

PAC017-077-230330-
/O.CAN.KPHI.SV.W.0088.000000T0000Z-060623T0345Z/
LEHIGH PA-BUCKS PA-
1120 PM EDT THU JUN 22 2006

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN BUCKS AND
SOUTHEASTERN LEHIGH COUNTIES IS CANCELLED...

THE SEVERE THUNDERSTORM HAS WEAKENED BELOW SEVERE CRITERIA AND
THE WARNING HAS BEEN CANCELLED. A COUPLE OF TREES WERE REPORTED 
KNOCKED DOWN IN SOUTHEASTERN LEHIGH COUNTY.

LAT...LON 4064 7542 4061 7540 4058 7541 4054 7535
      4061 7522 4055 7518 4055 7509 4053 7507
      4043 7507 4039 7497 4036 7498 4048 7557
      4065 7551

$$

TFG

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 22, 9:00 PM EDTSevere Thunderstorm WarningPHIBerks90 min
Jun 22, 10:16 PM EDTSevere Thunderstorm WarningPHIChester59 min
Jun 22, 10:23 PM EDTSevere Thunderstorm WarningPHIBerks37 min
Jun 22, 10:41 PM EDTSevere Thunderstorm WarningPHIMontgomery38 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2006Every severe thunderstorm warning in 2006

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.