Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 39, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 1, 2007, 3:53 PM EDT for Northampton County, Pennsylvania. It was in force for 82 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, 2007, 3:53 PM EDT (19:53 UTC)
- Expired
- Jun 1, 2007, 5:15 PM EDT
- In force
- 82 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
County Northampton County, PA
The radar
The Philadelphia radar (KDIX), 120 km from the middle of the area, began a volume at 19:53 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, 7.9 hours before the alert went out and 177 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
- 116 J/kg
- Mixed-layer CIN
- -220 J/kg
- Mixed-layer LCL
- 1070 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 104 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 011953
SVRPHI
PAC095-012115-
/O.NEW.KPHI.SV.W.0039.070601T1953Z-070601T2115Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
353 PM EDT FRI JUN 1 2007
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...
* UNTIL 515 PM EDT
* AT 349 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 8 MILES
NORTH OF EAST BANGOR...AND MOVING SOUTHEAST AT 10 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
EAST BANGOR BY 425 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.
THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
HAIL IN SMITHFIELD TOWNSHIP IN MONORE COUNTY. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS
LAT...LON 4094 7512 4091 7509 4086 7505 4084 7510
4081 7509 4079 7511 4080 7512 4091 7524
4093 7521 4096 7514
$$
TFG1 follow-up statement
000
WWUS51 KPHI 012030
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
430 PM EDT FRI JUN 1 2007
PAC095-012115-
/O.CON.KPHI.SV.W.0039.000000T0000Z-070601T2115Z/
NORTHAMPTON PA-
430 PM EDT FRI JUN 1 2007
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR NORTHEASTERN NORTHAMPTON COUNTY...
AT 425 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED 7 MILES NORTH OF EAST BANGOR...OR ABOUT 25 MILES NORTHEAST OF
BETHLEHEM...MOVING SOUTHEAST AT 5 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
6 MILES NORTHEAST OF EAST BANGOR BY 505 PM EDT...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
LAT...LON 4094 7512 4091 7509 4086 7505 4084 7510
4081 7509 4079 7511 4080 7512 4091 7524
4093 7521 4096 7514
$$
TFGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 8:19 PM EDT | Flash Flood Warning | PHI | Berks, Lehigh | 116 min |
| May 31, 8:30 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 45 min |
| May 31, 8:50 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh | 40 min |
| May 31, 9:33 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh | 34 min |
| May 31, 9:50 PM EDT | Flash Flood Warning | PHI | Lehigh | 3 hr |
| May 31, 11:27 PM EDT | Flash Flood Warning | PHI | Lehigh | 93 min |
| Jun 1, 2:36 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 54 min |
| Jun 1, 3:37 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 38 min |
| Jun 1, 4:24 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 66 min |
| Jun 1, 4:31 PM EDT | Flash Flood Warning | PHI | Monroe | 3 hr |
| Jun 1, 5:33 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 87 min |
| Jun 1, 6:00 PM EDT | Flash Flood Warning | PHI | Berks | 3 hr |
| Jun 1, 6:39 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh | 58 min |
| Jun 1, 6:50 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 62 min |
| Jun 1, 7:02 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 88 min |
| Jun 1, 7:03 PM EDT | Flash Flood Warning | PHI | Lehigh | 3 hr |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2007Every severe thunderstorm warning in 2007
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.