Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2006
Severe Thunderstorm Warning 254, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 26, 2006, 3:30 AM EDT for Montgomery County, Pennsylvania. It was in force for 45 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
- Aug 26, 2006, 3:30 AM EDT (07:30 UTC)
- Expired
- Aug 26, 2006, 4:15 AM EDT
- In force
- 45 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
County Montgomery County, PA
The radar
The Philadelphia radar (KDIX), 92 km from the middle of the area, began a volume at 07:30 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 |
|---|---|---|---|
| Aug 26, 3:30 AM EDT | TSTM WND DMG | Green Lane, PA | SIGNIFICANT WIND DAMAGE TO TREES REPORTED ON UPPER RIDGE ROAD IN MARLBOROUGH TOWNSHIP. |
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, 7.5 hours before the alert went out and 226 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
- 979 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 1772 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 104 m²/s²
- 0-3 km storm-relative helicity
- 192 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 4.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 260730
SVRPHI
PAC091-260815-
/O.NEW.KPHI.SV.W.0254.060826T0730Z-060826T0815Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
330 AM EDT SAT AUG 26 2006
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN MONTGOMERY COUNTY IN SOUTHEAST PENNSYLVANIA
* UNTIL 415 AM EDT
* AT 326 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 8 MILES
NORTHWEST OF SOUDERTON...OR ABOUT 14 MILES SOUTH OF ALLENTOWN...AND
MOVING SOUTHEAST AT 30 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
SOUDERTON BY 340 AM EDT...
LANSDALE BY 350 AM EDT...
LAT...LON 4039 7545 4028 7563 4018 7547 4015 7511
4028 7527
$$
EBERWINEThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 25, 10:43 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 32 min |
| Aug 25, 11:05 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 40 min |
| Aug 25, 11:43 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 47 min |
| Aug 25, 11:53 PM EDT | Severe Thunderstorm Warning | PHI | Delaware | 52 min |
| Aug 26, 12:00 AM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 45 min |
| Aug 26, 1:55 AM EDT | Severe Thunderstorm Warning | PHI | Bucks | 50 min |
| Aug 26, 2:12 AM EDT | Severe Thunderstorm Warning | PHI | Carbon, Lehigh | 48 min |
| Aug 26, 3:05 AM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh | 55 min |
| Aug 26, 4:11 AM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 49 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.