Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 127, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 6, 2007, 7:27 PM EDT for Northampton County, Pennsylvania. It was in force for 28 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 6, 2007, 7:27 PM EDT (23:27 UTC)
- Expired
- Jul 6, 2007, 7:55 PM EDT
- In force
- 28 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), 117 km from the middle of the area, began a volume at 23:29 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
Brookhaven, NY (KOKX), launched 12:00Z, 11.5 hours before the alert went out and 207 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
- 39 J/kg
- Mixed-layer CIN
- -154 J/kg
- Mixed-layer LCL
- 962 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- -45 m²/s²
- 0-3 km storm-relative helicity
- 8 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 062327
SVRPHI
PAC095-070015-
/O.NEW.KPHI.SV.W.0127.070706T2327Z-070707T0015Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
727 PM EDT FRI JUL 6 2007
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...
THIS INCLUDES THE CITY OF BETHLEHEM...
* UNTIL 815 PM EDT
* AT 725 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 NEAR
WIND GAP...OR ABOUT 21 MILES NORTH OF BETHLEHEM...AND MOVING
SOUTHEAST AT 35 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
EAST BANGOR AND 6 MILES NORTHEAST OF BELFAST BY 735 PM EDT...
LAT...LON 4086 7505 4084 7510 4079 7510 4078 7517
4075 7520 4062 7520 4054 7535 4058 7541
4062 7539 4066 7543 4065 7549 4074 7554
4073 7557 4075 7561 4079 7562 4085 7533
4096 7514
$$
JJM1 follow-up statement
000
WWUS51 KPHI 062355
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
755 PM EDT FRI JUL 6 2007
PAC095-070005-
/O.CAN.KPHI.SV.W.0127.000000T0000Z-070707T0015Z/
NORTHAMPTON PA-
755 PM EDT FRI JUL 6 2007
...THE SEVERE THUNDERSTORM WARNING FOR NORTHAMPTON COUNTY IS
CANCELLED...
THE THUNDERSTORM HAS WEAKENED AND MOVED OUT OF NORTHAMPTON COUNTY.
LAT...LON 4086 7505 4084 7510 4079 7510 4078 7517
4075 7520 4062 7520 4054 7535 4058 7541
4062 7539 4066 7543 4065 7549 4074 7554
4073 7557 4075 7561 4079 7562 4085 7533
4096 7514
$$
NIERENBERGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 2:10 PM EDT | Excessive Heat Watch | PHI | Delaware, Philadelphia | 48 hr |
| Jul 6, 7:05 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 37 min |
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.