Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 55, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 10, 2008, 6:42 PM EDT for Berks County, Lehigh County, Pennsylvania. It was in force for 59 min. 4 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
- Jun 10, 2008, 6:42 PM EDT (22:42 UTC)
- Expired
- Jun 10, 2008, 7:41 PM EDT
- In force
- 59 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Berks County, PA, Lehigh County, PA
The radar
The Philadelphia radar (KDIX), 125 km from the middle of the area, began a volume at 22:45 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 |
|---|---|---|---|
| Jun 10, 6:42 PM EDT | HAIL 1 | 5 Sse Claussville, PA | QUARTER SIZE HAIL IN BREINIGSVILLE. |
| Jun 10, 7:00 PM EDT | HAIL 1 | 5 Ese Claussville, PA | QUARTER SIZE HAIL ON THE NORTHEAST EXTENSION NORTH OF I-78 IN UPPER MACUNGIE TOWNSHIP AND ALSO IN CATASAUQUA |
| Jun 10, 7:20 PM EDT | TSTM WND DMG | Allentown, PA | POLES, TREES, AND WIRES DOWN IN ALLENTOWN WITH SOME DAMAGE TO A HOUSE. |
| Jun 10, 7:27 PM EDT | TSTM WND DMG | Allentown, PA | POLES, TREES, AND WIRES DOWN IN ALLENTOWN WITH SOME DAMAGE TO A HOUSE. |
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 |
|---|---|---|---|
| Jun 10, 5:47 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 10.7 hours before the alert went out and 129 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
- 1286 J/kg
- Mixed-layer CIN
- -135 J/kg
- Mixed-layer LCL
- 1568 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 102243
SVRPHI
PAC011-077-110000-
/O.NEW.KPHI.SV.W.0055.080610T2242Z-080611T0000Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
642 PM EDT TUE JUN 10 2008
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EASTERN BERKS COUNTY IN EASTERN PENNSYLVANIA...
LEHIGH COUNTY IN EASTERN PENNSYLVANIA...
* UNTIL 800 PM EDT
* AT 641 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS TO 60 MPH. THIS STORM WAS LOCATED NEAR
KUTZTOWN...OR ABOUT 15 MILES NORTHEAST OF READING...AND MOVING
NORTHEAST AT 35 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
ANCIENT OAKS AND 6 MILES SOUTHEAST OF CLAUSSVILLE BY 650 PM...
ALLENTOWN...EMMAUS...8 MILES SOUTHEAST OF SCHNECKSVILLE AND 8 MILES
SOUTHEAST OF NEFFS BY 655 PM...
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 100 AM WEDNESDAY
MORNING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND
EASTERN PENNSYLVANIA.
LAT...LON 4071 7563 4072 7557 4067 7552 4064 7548
4065 7543 4057 7541 4019 7595 4029 7610
TIME...MOT...LOC 2242Z 228DEG 30KT 4048 7569
$$
GORSE1 follow-up statement
000
WWUS51 KPHI 102341
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
741 PM EDT TUE JUN 10 2008
PAC011-077-102351-
/O.CAN.KPHI.SV.W.0055.000000T0000Z-080611T0000Z/
BERKS PA-LEHIGH PA-
741 PM EDT TUE JUN 10 2008
...THE SEVERE THUNDERSTORM WARNING FOR LEHIGH AND EASTERN BERKS
COUNTIES IS CANCELLED...
EVEN THOUGH THE STORM THAT PROMPTED THE SEVERE THUNDERSTORM WARNING
HAS MOVED OUT OF THE AREA...ADDITIONAL THUNDERSTORMS WILL AFFECT THE
AREA OVER THE NEXT SEVERAL HOURS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EDT
WEDNESDAY MORNING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW
JERSEY AND EASTERN PENNSYLVANIA.
LAT...LON 4071 7563 4072 7557 4067 7552 4064 7548
4065 7543 4057 7541 4019 7595 4029 7610
TIME...MOT...LOC 2341Z 228DEG 30KT 4081 7521
$$
ROBERTSONThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 5:47 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 58 min |
| Jun 10, 5:51 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 54 min |
| Jun 10, 6:20 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 40 min |
| Jun 10, 6:47 PM EDT | Flash Flood Warning | PHI | Berks, Lehigh | 3 hr |
| Jun 10, 6:57 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe, Northampton | 48 min |
| Jun 10, 7:02 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 58 min |
| Jun 10, 7:13 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 77 min |
| Jun 10, 7:36 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Montgomery | 54 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2008Every severe thunderstorm warning in 2008
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.