Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2005
Severe Thunderstorm Warning 94, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 27, 2005, 6:40 PM EDT for Montgomery County, Pennsylvania. It was in force for 35 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 27, 2005, 6:40 PM EDT (22:40 UTC)
- Expired
- Jul 27, 2005, 7:15 PM EDT
- In force
- 35 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), 67 km from the middle of the area, began a volume at 22:39 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 27, 6:40 PM EDT | TSTM WND DMG | Jenkintown, PA | TREES AND WIRES DOWN. |
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 27, 1:50 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 10.7 hours before the alert went out and 108 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
- 1105 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 1506 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 29 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 272241 SVRPHI PAC091-272315- /O.NEW.KPHI.SV.W.0094.050727T2240Z-050727T2315Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 640 PM EDT WED JUL 27 2005 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN MONTGOMERY COUNTY IN SOUTHEAST PENNSYLVANIA * UNTIL 715 PM EDT * AT 636 PM EDT...A TRAINED WEATHER SPOTTERS REPORTED A SEVERE THUNDERSTORM WITH WIND GUSTS TO 65 MPH IN ROXBOROUGH IN PHILADELHIA COUNTY. THIS STORM WAS MOVING EAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... WILLOW GROVE AND ROCKLEDGE BY 650 PM EDT WIND GUSTS OVER 70 MPH...HAIL AND HEAVY RAIN ARE POSSIBLE WITH THIS STORM. LAT...LON 4013 7528 4005 7512 4013 7503 4019 7512 $$ NIERENBERG
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 4:06 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 39 min |
| Jul 27, 4:12 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 48 min |
| Jul 27, 4:30 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Lehigh, Northampton | 45 min |
| Jul 27, 5:17 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 43 min |
| Jul 27, 5:47 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 58 min |
| Jul 27, 6:30 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 45 min |
| Jul 27, 6:34 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 56 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.