Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 125, NWS Philadelphia/Mount Holly

July 14, 2004Berks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 14, 2004, 3:12 PM EDT for Berks County, Pennsylvania. It was in force for 63 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
Jul 14, 2004, 3:12 PM EDT (19:12 UTC)
Expired
Jul 14, 2004, 4:15 PM EDT
In force
63 min
Issued by
NWS Philadelphia/Mount Holly
Area
Counties, with a storm outline in the text

County Berks County, PA

The radar

The Philadelphia radar (KDIX), 156 km from the middle of the area, began a volume at 19:15 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.

IssuedProductOfficeLasted
Jul 14, 1:15 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 7.2 hours before the alert went out and 119 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, Phillips Aaf/Abe, MD at 12:00Z on 2004-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3 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, Phillips Aaf/Abe, MD at 12:00Z on 2004-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 91 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
3 J/kg
Mixed-layer CIN
-233 J/kg
Mixed-layer LCL
719 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
91 m²/s²
0-3 km storm-relative helicity
125 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 141912
SVRPHI
PAC011-142015-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
312 PM EDT WED JUL 14 2004

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN BERKS COUNTY IN EASTERN PENNSYLVANIA

* UNTIL 415 PM EDT

* AT 310 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND 
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED IN 
  LEBANON COUNTY NEAR LEBANON AND HERSHEY...AND MOVING NORTHEAST AT 
  30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  STRAUSSTOWN BY 340 PM EDT...
  BERNVILLE BY 345 PM EDT...
  LEESPORT BY 355 PM EDT...
  HAMBURG BY 400 PM EDT...
  LENHARTSVILLE BY 405 PM EDT...
  KUTZTOWN BY 410 PM EDT...

LAT...LON 4054 7569 4037 7621 4039 7628 4050 7643
      4051 7637 4053 7618 4056 7615 4059 7607
      4058 7602 4064 7600 4068 7590

$$

IOVINO

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 2:22 PM EDTSevere Thunderstorm WarningPHIBucks53 min
Jul 14, 3:05 PM EDTFlash Flood WarningPHIChester, Delaware, Philadelphia76 days
Jul 14, 4:10 PM EDTSevere Thunderstorm WarningPHIBerks65 min
Jul 14, 4:24 PM EDTSevere Thunderstorm WarningPHIChester66 min
Jul 14, 4:44 PM EDTSevere Thunderstorm WarningPHIBucks, Montgomery61 min
Jul 14, 5:01 PM EDTTornado WarningPHIMontgomery29 min
Jul 14, 5:17 PM EDTSpecial Marine WarningPHI103 min
Jul 14, 5:41 PM EDTSevere Thunderstorm WarningPHIPhiladelphia64 min
Jul 14, 5:44 PM EDTSevere Thunderstorm WarningPHIBucks61 min
Jul 14, 5:51 PM EDTFlash Flood WarningPHIBucks2 hr
Jul 14, 6:01 PM EDTSpecial Marine WarningPHI74 min
Jul 14, 6:39 PM EDTSpecial Marine WarningPHI66 min
Jul 14, 6:39 PM EDTSpecial Marine WarningPHI66 min
Jul 14, 6:46 PM EDTFlash Flood WarningPHIBerks3 hr
Jul 14, 7:00 PM EDTSpecial Marine WarningPHI60 min
Jul 14, 7:38 PM EDTSpecial Marine WarningPHI82 min
Jul 14, 7:38 PM EDTSpecial Marine WarningPHI82 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2004Every severe thunderstorm warning in 2004

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.