Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2005
Severe Thunderstorm Warning 63, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 1, 2005, 4:18 PM EDT for Chester County, Pennsylvania. It was in force for 72 min. 2 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 1, 2005, 4:18 PM EDT (20:18 UTC)
- Expired
- Jul 1, 2005, 5:30 PM EDT
- In force
- 72 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
County Chester County, PA
The radar
The Philadelphia radar (KDIX), 120 km from the middle of the area, began a volume at 20:18 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 1, 4:35 PM EDT | TSTM WND DMG | Exton, PA | LARGE LIMBS DOWN. |
| Jul 1, 4:50 PM EDT | TSTM WND DMG | 3 S West Chester, PA | LARGE TREE DOWN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 8.3 hours before the alert went out and 56 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
- 558 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 1029 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 40 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 012019
SVRPHI
PAC029-012130-
/O.NEW.KPHI.SV.W.0063.050701T2018Z-050701T2130Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
418 PM EDT FRI JUL 1 2005
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CHESTER COUNTY IN SOUTHEAST PENNSYLVANIA
* UNTIL 530 PM EDT
* AT 415 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 NEAR
OXFORD AND MOVING NORTHEAST AT 20 MPH. OTHER STRONG STORMS WERE
LOCATED IN CENTRAL CHESTER COUNTY AND THESE ALSO COULD BECOME SEVERE.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
WEST GROVE BY 435 PM EDT
PARKESBURG BY 440 PM EDT
COATESVILLE BY 450 PM EDT
KENNETT SQUARE BY 455 PM EDT
DOWNINGTOWN BY 510 PM EDT
WEST CHESTER BY 515 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 3985 7612 3971 7596 3988 7560 4002 7549
4021 7560
$$
TFGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 3:58 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 32 min |
| Jul 1, 4:45 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 60 min |
| Jul 1, 5:14 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 61 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2005Every severe thunderstorm warning in 2005
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.