Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2006
Severe Thunderstorm Warning 55, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 1, 2006, 7:28 PM EDT for Montgomery County, Pennsylvania. It was in force for 47 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
- Jun 1, 2006, 7:28 PM EDT (23:28 UTC)
- Expired
- Jun 1, 2006, 8:15 PM EDT
- In force
- 47 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
County Montgomery County, PA
The radar
The Philadelphia radar (KDIX), 97 km from the middle of the area, began a volume at 23:30 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, 11.5 hours before the alert went out and 97 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.
- Mixed-layer CAPE
- 174 J/kg
- Mixed-layer CIN
- -147 J/kg
- Mixed-layer LCL
- 1055 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS51 KPHI 012327 SVRPHI PAC091-020015- /O.NEW.KPHI.SV.W.0055.060601T2328Z-060602T0015Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 728 PM EDT THU JUN 1 2006 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL MONTGOMERY COUNTY IN SOUTHEAST PENNSYLVANIA THIS INCLUDES THE CITIES OF...WEST NORRITON...TROOPER... KULPSVILLE...HARLEYSVILLE...EAST NORRITON...EAGLEVILLE... COLLEGEVILLE * UNTIL 815 PM EDT * AT 726 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 NEAR TRAPPE...OR ABOUT NEAR ROYERSFORD...AND MOVING EAST AT 40 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... SCHWENKSVILLE...SKIPPACK...SPRING MOUNT AND EVANSBURG BY 735 PM EDT... KULPSVILLE...HARLEYSVILLE AND 7 MILES NORTH OF EAST NORRITON BY 740 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. LAT...LON 4023 7560 4021 7559 4008 7535 4032 7534 $$ JJM
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 1, 3:39 PM EDT | Severe Thunderstorm Warning | PHI | Carbon | 36 min |
| Jun 1, 4:45 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 30 min |
| Jun 1, 5:19 PM EDT | Flash Flood Warning | PHI | Carbon | 116 min |
| Jun 1, 5:48 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 42 min |
| Jun 1, 5:55 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 65 min |
| Jun 1, 6:11 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery | 49 min |
| Jun 1, 6:27 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 63 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.