Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2006
Severe Thunderstorm Warning 124, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 4, 2006, 2:08 PM EDT for Berks County, Chester County, Pennsylvania. It was in force for 67 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
- Jul 4, 2006, 2:08 PM EDT (18:08 UTC)
- Expired
- Jul 4, 2006, 3:15 PM EDT
- In force
- 67 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
Counties Berks County, PA, Chester County, PA
The radar
The Philadelphia radar (KDIX), 110 km from the middle of the area, began a volume at 18:08 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 |
|---|---|---|---|
| Jul 4, 2:18 PM EDT | TSTM WND DMG | 5 S Reading, PA | TREES POWER LINES DOWN IN SOUTHWESTERN THROUGH SOUTHEASTERN PART OF COUNTY. |
| Jul 4, 2:50 PM EDT | TSTM WND DMG | Atglen, PA | TREES AND POWER LINES DOWN THROUGHOUT WESTERN AND CENTRAL PART OF COUNTY. |
| Jul 4, 3:11 PM EDT | TSTM WND DMG | 1 E Exton, PA | TREE LIMBS DOWN. |
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 |
|---|---|---|---|
| Jul 4, 12:40 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 6.1 hours before the alert went out and 198 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
- 965 J/kg
- Mixed-layer CIN
- -78 J/kg
- Mixed-layer LCL
- 1431 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 135 m²/s²
- 0-3 km storm-relative helicity
- 169 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 041808
SVRPHI
PAC011-029-041915-
/O.NEW.KPHI.SV.W.0124.060704T1808Z-060704T1915Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
208 PM EDT TUE JUL 4 2006
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN BERKS COUNTY IN EASTERN PENNSYLVANIA
CHESTER COUNTY IN SOUTHEAST PENNSYLVANIA
* UNTIL 315 PM EDT
* AT 204 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 SOUTH OF WERNERSVILLE...OR ABOUT 12 MILES NORTHEAST OF
LANCASTER...AND MOVING EAST AT 35 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
HONEY BROOK BY 225 PM EDT...
ELVERSON BY 230 PM EDT...
LIONVILLE BY 250 PM EDT...
PHOENIXVILLE BY 300 PM EDT...
PAOLI BY 305 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.
LAT...LON 4028 7568 4026 7570 4020 7557 4015 7554
4015 7551 4013 7552 4009 7545 4010 7543
3999 7546 3987 7562 3991 7600 4011 7594
4015 7589 4036 7620
$$
JJM1 follow-up statement
000
WWUS51 KPHI 041853
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
251 PM EDT TUE JUL 4 2006
PAC011-041901-
/O.CAN.KPHI.SV.W.0124.000000T0000Z-060704T1915Z/
BERKS PA-
251 PM EDT TUE JUL 4 2006
...THE SEVERE THUNDERSTORM WARNING FOR BERKS COUNTY IS CANCELLED...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND
NORTHWESTERN NEW JERSEY AND EASTERN PENNSYLVANIA.
LAT...LON 4024 7568 4024 7568 4020 7557 4015 7554
4015 7551 4013 7552 4009 7545 4010 7543
3999 7546 3987 7562 3974 7580 3974 7610
4011 7594 4015 7589 4016 7585
$$
PAC029-041915-
/O.CON.KPHI.SV.W.0124.000000T0000Z-060704T1915Z/
CHESTER PA-
251 PM EDT TUE JUL 4 2006
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR CHESTER COUNTY...
AT 246 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PENNY
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM KENILWORTH TO OXFORD...OR
ALONG A LINE EXTENDING FROM 18 MILES SOUTHEAST OF READING TO 17 MILES
NORTHWEST OF NEWARK...MOVING EAST AT 35 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
WEST GROVE...LIONVILLE AND DOWNINGTOWN BY 300 PM EDT...
TOUGHKENAMON...PHOENIXVILLE...EXTON AND AVONDALE BY 305 PM EDT...
WEST GOSHEN...WEST CHESTER AND PAOLI BY 310 PM EDT...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND
NORTHWESTERN NEW JERSEY AND EASTERN PENNSYLVANIA.
LAT...LON 4024 7568 4024 7568 4020 7557 4015 7554
4015 7551 4013 7552 4009 7545 4010 7543
3999 7546 3987 7562 3974 7580 3974 7610
4011 7594 4015 7589 4016 7585
$$
ROBERTSONThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 2:34 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 26 min |
| Jul 4, 2:42 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 33 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.