Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2006
Severe Thunderstorm Warning 215, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 28, 2006, 2:28 PM EDT for 4 counties in Pennsylvania. It was in force for 62 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
- Jul 28, 2006, 2:28 PM EDT (18:28 UTC)
- Expired
- Jul 28, 2006, 3:30 PM EDT
- In force
- 62 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
Counties Chester County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 91 km from the middle of the area, began a volume at 18:31 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 28, 2:50 PM EDT | TSTM WND DMG | Radnor Township, PA | TREES DOWN IN RADNOR TWP, ASTIN TWP, AND THORBURY TWP. |
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 28, 1:00 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 6.5 hours before the alert went out and 78 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
- 411 J/kg
- Mixed-layer CIN
- -78 J/kg
- Mixed-layer LCL
- 1201 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 106 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 281829 SVRPHI PAC029-045-091-101-281930- /O.NEW.KPHI.SV.W.0215.060728T1828Z-060728T1930Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 228 PM EDT FRI JUL 28 2006 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL CHESTER COUNTY IN SOUTHEAST PENNSYLVANIA NORTHERN DELAWARE COUNTY IN SOUTHEAST PENNSYLVANIA THIS INCLUDES THE CITY OF SPRINGFIELD SOUTH CENTRAL MONTGOMERY COUNTY IN SOUTHEAST PENNSYLVANIA WEST CENTRAL PHILADELPHIA COUNTY IN SOUTHEAST PENNSYLVANIA * UNTIL 330 PM EDT * AT 227 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR WEST CHESTER...OR ABOUT 12 MILES WEST OF SPRINGFIELD...AND MOVING EAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... LIMA BY 235 PM EDT... BROOMALL...SPRINGFIELD...RADNOR TOWNSHIP AND SWARTHMORE BY 240 PM EDT... DREXEL HILL...BRYN MAWR...EAST LANSDOWNE AND YEADON BY 245 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 4002 7562 3985 7564 3992 7517 4012 7533 $$ WN
2 follow-up statements
000
WWUS51 KPHI 281847
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
244 PM EDT FRI JUL 28 2006
PAC029-281854-
/O.CAN.KPHI.SV.W.0215.000000T0000Z-060728T1930Z/
CHESTER PA-
244 PM EDT FRI JUL 28 2006
...THE SEVERE THUNDERSTORM WARNING FOR CHESTER COUNTY IS CANCELLED...
THE SEVERE STORM HAS MOVED INTO DELAWARE COUNTY.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY
EVENING FOR SOUTHWESTERN DELAWARE AND NORTHEASTERN MARYLAND AND
NORTHWESTERN NEW JERSEY AND EASTERN PENNSYLVANIA.
LAT...LON 3993 7517 3986 7561 3999 7544 4000 7545
4003 7541 4005 7542 4006 7537 4008 7539
4007 7541 4009 7542 4012 7533
$$
PAC045-091-101-281930-
/O.CON.KPHI.SV.W.0215.000000T0000Z-060728T1930Z/
DELAWARE PA-PHILADELPHIA PA-MONTGOMERY PA-
244 PM EDT FRI JUL 28 2006
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR SOUTHERN MONTGOMERY...PHILADELPHIA AND DELAWARE COUNTIES...
AT 240 PM EDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING
DAMAGING WINDS IN EXCESS OF 65 MPH WAS LOCATED NEAR LIMA...
OR ABOUT 9 MILES NORTHWEST OF SPRINGFIELD...MOVING EAST AT 30 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
BROOMALL BY 250 PM EDT...
RADNOR TOWNSHIP...KING OF PRUSSIA AND DREXEL HILL BY 255 PM EDT...
BRYN MAWR...ARDMORE...WEST CONSHOHOCKEN AND CONSHOHOCKEN BY 300 PM
EDT...
NARBERTH AND MILLBOURNE BY 305 PM EDT...
THIS STORM HAS DOWNED NUMEROUS TREES AND WIRES IN CHESTER COUNTY.
PLEASE TAKE SHELTER IMMEDIATELY. THIS IS A DANGEROUS AND LIFE THREATENING
STORM. DO NOT VENTURE OUTDOORS UNTIL THIS STORM PASSES.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY
EVENING FOR SOUTHWESTERN DELAWARE AND NORTHEASTERN MARYLAND AND
NORTHWESTERN NEW JERSEY AND EASTERN PENNSYLVANIA.
LAT...LON 3993 7517 3986 7561 3999 7544 4000 7545
4003 7541 4005 7542 4006 7537 4008 7539
4007 7541 4009 7542 4012 7533
$$
TFG000
WWUS51 KPHI 281914
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
313 PM EDT FRI JUL 28 2006
PAC045-091-281923-
/O.CAN.KPHI.SV.W.0215.000000T0000Z-060728T1930Z/
DELAWARE PA-MONTGOMERY PA-
313 PM EDT FRI JUL 28 2006
...THE SEVERE THUNDERSTORM WARNING FOR MONTGOMERY AND DELAWARE
COUNTIES IS CANCELLED...
THE SEVERE STORM IS NOW IN BUCKS AND PHILADELPHIA COUNTIES.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY
EVENING FOR SOUTHWESTERN DELAWARE AND NORTHEASTERN MARYLAND AND
NORTHWESTERN NEW JERSEY AND EASTERN PENNSYLVANIA.
LAT...LON 4006 7494 3996 7513 3996 7528 3998 7527
4000 7524 4003 7520 4005 7520 4006 7517
4007 7509 4006 7512 4008 7505 4012 7503
$$
PAC101-281930-
/O.CON.KPHI.SV.W.0215.000000T0000Z-060728T1930Z/
PHILADELPHIA PA-
313 PM EDT FRI JUL 28 2006
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR PHILADELPHIA COUNTY...
AT 309 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED. THIS STORM WAS
LOCATED NEAR PHILADELPHIA...MOVING EAST AT 25 MPH. WIND GUSTS TO
69 MPH WERE REPORTED AT ROXBOROUGH AND 57 MPH AT NORTHEAST PHILADELPHIA
AIRPORT.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY
EVENING FOR SOUTHWESTERN DELAWARE AND NORTHEASTERN MARYLAND AND
NORTHWESTERN NEW JERSEY AND EASTERN PENNSYLVANIA.
LAT...LON 4006 7494 3996 7513 3996 7528 3998 7527
4000 7524 4003 7520 4005 7520 4006 7517
4007 7509 4006 7512 4008 7505 4012 7503
$$
TFGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 10:55 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 65 min |
| Jul 27, 11:32 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Montgomery | 88 min |
| Jul 28, 12:32 AM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 43 min |
| Jul 28, 12:40 AM EDT | Flash Flood Warning | PHI | Bucks, Montgomery, Philadelphia | 3 hr |
| Jul 28, 12:40 AM EDT | Severe Thunderstorm Warning | PHI | Bucks | 65 min |
| Jul 28, 2:49 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 56 min |
| Jul 28, 3:07 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 53 min |
| Jul 28, 4:03 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 57 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.