Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2006
Severe Thunderstorm Warning 50, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 1, 2006, 5:55 PM EDT for Chester County, Pennsylvania. It was in force for 65 min. 1 report 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 1, 2006, 5:55 PM EDT (21:55 UTC)
- Expired
- Jun 1, 2006, 7:00 PM EDT
- In force
- 65 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), 116 km from the middle of the area, began a volume at 21:58 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 1, 6:06 PM EDT | TSTM WND DMG | 10 S Kenilworth, PA | TREES DOWN IN SOUTH COVENTRY TOWNSHIP |
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, 9.9 hours before the alert went out and 68 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
- 174 J/kg
- Mixed-layer CIN
- -147 J/kg
- Mixed-layer LCL
- 1055 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 15 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 012156
SVRPHI
PAC029-012300-
/O.NEW.KPHI.SV.W.0050.060601T2155Z-060601T2300Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
555 PM EDT THU JUN 1 2006
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CHESTER COUNTY IN SOUTHEAST PENNSYLVANIA
THIS INCLUDES THE CITIES OF...WEST GOSHEN...WEST CHESTER...
THORNDALE...STOWE...PAOLI...LIONVILLE-MARCHWOOD...KENNETT SQUARE...
DOWNINGTOWN...COATESVILLE
* UNTIL 700 PM EDT
* AT 552 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING NICKEL SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 5 MILES SOUTHWEST OF KENILWORTH
TO 7 MILES SOUTHWEST OF PARKESBURG AND MOVING EAST AT 15 MPH.
* SEVERE THUNDERSTORMS WILL BE NEAR...
SOUTH POTTSTOWN BY 600 PM EDT...
KENILWORTH AND COATESVILLE BY 605 PM EDT...
THORNDALE BY 615 PM EDT...
WEST GROVE BY 620 PM EDT...
LIONVILLE-MARCHWOOD AND DOWNINGTOWN BY 625 PM EDT...
TOUGHKENAMON AND EXTON BY 635 PM EDT...
THESE ARE DANGEROUS STORMS. 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 4014 7591 3976 7610 3985 7561 4005 7544
4025 7567
$$
OHARA1 follow-up statement
000
WWUS51 KPHI 012232
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
631 PM EDT THU JUN 1 2006
PAC029-012300-
/O.CON.KPHI.SV.W.0050.000000T0000Z-060601T2300Z/
CHESTER PA-
631 PM EDT THU JUN 1 2006
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR CHESTER COUNTY...
AT 619 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE TWO SEVERE THUNDERSTORMS CAPABLE OF PRODUCING NICKEL SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. ONE STORM IS
LOCATED IN THE NORTHEAST SECTION OF THE COUNTY 5 MILES NORTHWEST OF
PHOENIXVILLE. ANOTHER LOCATED IN THE SOUTHWEST SECTION OF THE
COUNTY NEAR ATLGLEN. THESE STORMS ARE MOVING EAST AT 5 MPH.
LAT...LON 4014 7591 3976 7610 3985 7561 4005 7544
4025 7567
$$
ROBERTSON/HELMETAGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 1, 3:39 PM EDT | Severe Thunderstorm Warning | PHI | Carbon | 36 min |
| Jun 1, 4:45 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 30 min |
| Jun 1, 5:19 PM EDT | Flash Flood Warning | PHI | Carbon | 116 min |
| Jun 1, 5:48 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 42 min |
| Jun 1, 6:11 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery | 49 min |
| Jun 1, 6:27 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 63 min |
| Jun 1, 7:28 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery | 47 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.