Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 224, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 25, 2007, 8:55 PM EDT for Carbon County, Lehigh County, Pennsylvania. It was in force for 65 min. 3 reports 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
- Aug 25, 2007, 8:55 PM EDT (00:55 UTC)
- Expired
- Aug 25, 2007, 10:00 PM EDT
- In force
- 65 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
Counties Carbon County, PA, Lehigh County, PA
The radar
The Philadelphia radar (KDIX), 148 km from the middle of the area, began a volume at 00:57 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 25, 9:06 PM EDT | TSTM WND DMG | 1 E Schnecksville, PA | TREES DOWN IN NORTH WHITEHALL TOWNSHIP. |
| Aug 25, 9:12 PM EDT | TSTM WND DMG | 3 Ne New Mahoning, PA | TREES AND WIRES DOWN. |
| Aug 25, 9:24 PM EDT | TSTM WND DMG | 1 E Schnecksville, PA | TREES DOWN IN NORTH WHITEHALL TOWNSHIP. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 25, 5:58 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 0.9 hours before the alert went out and 239 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
- 620 J/kg
- Mixed-layer CIN
- -248 J/kg
- Mixed-layer LCL
- 1398 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 96 m²/s²
- 0-3 km storm-relative helicity
- 139 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 260056
SVRPHI
PAC025-077-260200-
/O.NEW.KPHI.SV.W.0224.070826T0055Z-070826T0200Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
855 PM EDT SAT AUG 25 2007
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN LEHIGH COUNTY IN EASTERN PENNSYLVANIA...
CARBON COUNTY IN NORTHEAST PENNSYLVANIA...
* UNTIL 1000 PM EDT
* AT 853 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 11
MILES SOUTHWEST OF NEW MAHONING...OR ABOUT 26 MILES NORTH OF
READING...AND MOVING EAST AT 30 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
6 MILES SOUTH OF NEW MAHONING BY 910 PM EDT...
NEW TRIPOLI AND 8 MILES SOUTH OF LEHIGHTON BY 920 PM EDT...
NEFFS...SCHNECKSVILLE...EMERALD AND 6 MILES SOUTH OF PALMERTON BY
930 PM EDT...
IN ADDITION TO LARGE 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.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
SATURDAY EVENING FOR NORTHEAST MARYLAND AND EASTERN PENNSYLVANIA.
LAT...LON 4090 7559 4079 7561 4079 7562 4075 7561
4067 7549 4065 7549 4062 7577 4069 7589
4074 7578 4089 7598 4098 7585 4100 7576
4102 7575 4104 7577 4111 7566
TIME...MOT...LOC 0055Z 271DEG 28KT 4071 7598
$$
NIERENBERG1 follow-up statement
000
WWUS51 KPHI 260123
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
922 PM EDT SAT AUG 25 2007
PAC025-077-260200-
/O.CON.KPHI.SV.W.0224.000000T0000Z-070826T0200Z/
LEHIGH PA-CARBON PA-
922 PM EDT SAT AUG 25 2007
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM EDT
FOR CARBON AND NORTHERN LEHIGH COUNTIES...
AT 914 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR BOWMANSTOWN...OR ABOUT 17 MILES NORTHWEST OF
ALLENTOWN...MOVING EAST AT 35 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
7 MILES NORTH OF COPLAY AND 8 MILES NORTH OF HOKENDAUQUA BY 935 PM
EDT...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
SATURDAY EVENING FOR NORTHEAST MARYLAND AND EASTERN PENNSYLVANIA.
LAT...LON 4090 7559 4079 7561 4079 7562 4075 7561
4067 7549 4065 7549 4062 7577 4069 7589
4074 7578 4089 7598 4098 7585 4100 7576
4102 7575 4104 7577 4111 7566
TIME...MOT...LOC 0122Z 263DEG 31KT 4076 7564
$$
KRUZDLOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 25, 8:00 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 60 min |
| Aug 25, 8:17 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 58 min |
| Aug 25, 8:55 PM EDT | Flash Flood Warning | PHI | Carbon | 4 hr |
| Aug 25, 9:20 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 55 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.