Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2006
Severe Thunderstorm Warning 70, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 2, 2006, 8:28 PM EDT for Chester County, Pennsylvania. It was in force for 62 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 2, 2006, 8:28 PM EDT (00:28 UTC)
- Expired
- Jun 2, 2006, 9:30 PM EDT
- In force
- 62 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
County Chester County, PA
The radar
The Dover AFB radar (KDOX), 120 km from the middle of the area, began a volume at 00:29 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 2, 8:30 PM EDT | TSTM WND DMG | West Grove, PA | NUMEROUS TREES SNAPPED OFF HALFWAY UP, WITH SOME TOPPLED OVER. DAMAGE TO A HOUSE ROOF. |
| Jun 2, 8:57 PM EDT | HAIL 0.88 | West Grove, PA | NICKEL SIZE HAIL REPORTED IN WEST GROVE. |
| Jun 2, 8:57 PM EDT | HAIL 0.88 | West Grove, PA | |
| Jun 2, 8:57 PM EDT | HAIL 0.88 | West Grove, PA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 0.5 hours before the alert went out and 166 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
- 1897 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 789 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 162 m²/s²
- 0-3 km storm-relative helicity
- 199 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 7.2
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 030028
SVRPHI
PAC029-030130-
/O.NEW.KPHI.SV.W.0070.060603T0028Z-060603T0130Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
828 PM EDT FRI JUN 2 2006
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHWESTERN CHESTER COUNTY IN SOUTHEAST PENNSYLVANIA
* UNTIL 930 PM EDT
* AT 823 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL. THIS
STORM WAS LOCATED 10 MILES WEST OF WEST GROVE...OR ABOUT 15 MILES
NORTHWEST OF NEWARK...AND MOVING EAST AT 15 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
WEST GROVE BY 900 PM EDT...
KENNETT SQUARE BY 925 PM EDT...
DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
LAT...LON 3988 7600 3972 7597 3975 7581 3986 7563
4005 7576
$$
MPD1 follow-up statement
000
WWUS51 KPHI 030113
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
911 PM EDT FRI JUN 2 2006
PAC029-030130-
/O.CON.KPHI.SV.W.0070.000000T0000Z-060603T0130Z/
CHESTER PA-
912 PM EDT FRI JUN 2 2006
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR CHESTER COUNTY...
AT 910 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
WEAKENING BUT STILL POTENTIALLY SEVERE THUNDERSTORM. THIS STORM WAS
LOCATED NEAR KENNETT SQUARE...OR ABOUT 10 MILES NORTHWEST OF
WILMINGTON...MOVING NORTHEAST AT 15 MPH. THE STORM HAS A HISTORY OF
PRODUCING NICKEL SIZED HAIL.
LAT...LON 4000 7583 3975 7595 3975 7577 3986 7563
4013 7550
$$
MPDThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 2, 10:06 PM EDT | Flash Flood Warning | PHI | Delaware, Philadelphia | 3 hr |
| Jun 3, 12:44 AM EDT | Flash Flood Warning | PHI | Delaware | 3 hr |
| Jun 3, 1:20 AM EDT | Flash Flood Warning | PHI | Chester, Philadelphia | 3 hr |
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.