Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2005
Severe Thunderstorm Warning 141, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 14, 2005, 9:58 PM EDT for Montgomery County, Pennsylvania. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 14, 2005, 9:58 PM EDT (01:58 UTC)
- Expired
- Aug 14, 2005, 10:30 PM EDT
- In force
- 32 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), 102 km from the middle of the area, began a volume at 02:01 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 14, 1:15 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 2.0 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
- 2485 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 1376 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 36 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 150158 SVRPHI PAC091-150230- /O.NEW.KPHI.SV.W.0141.050815T0158Z-050815T0230Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 958 PM EDT SUN AUG 14 2005 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN MONTGOMERY COUNTY IN SOUTHEAST PENNSYLVANIA * UNTIL 1030 PM EDT * AT 957 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM. THIS STORM WAS LOCATED NEAR EAST GREENVILLE...OR ABOUT 15 MILES SOUTHWEST OF ALLENTOWN...AND MOVING EAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... EAST GREENVILLE AND SPRING MOUNT BY 1010 PM EDT LAT...LON 4042 7554 4026 7565 4026 7526 4038 7545 $$ EBERWINE
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 8:31 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 44 min |
| Aug 14, 9:32 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh, Northampton | 28 min |
| Aug 14, 9:37 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 38 min |
| Aug 14, 9:43 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 32 min |
| Aug 14, 10:14 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 46 min |
| Aug 14, 10:36 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery | 39 min |
| Aug 14, 10:38 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 52 min |
| Aug 15, 12:02 AM EDT | Severe Thunderstorm Warning | PHI | Delaware, Philadelphia | 43 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.