Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 268, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Nov 15, 2008, 3:54 PM EST for Berks County, Pennsylvania. It was in force for 38 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
- Nov 15, 2008, 3:54 PM EST (20:54 UTC)
- Expired
- Nov 15, 2008, 4:32 PM EST
- In force
- 38 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
County Berks County, PA
The radar
The Philadelphia radar (KDIX), 135 km from the middle of the area, began a volume at 20:55 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 |
|---|---|---|---|
| Nov 15, 12:22 PM EST | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 8.9 hours before the alert went out and 217 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
- 13 J/kg
- Mixed-layer CIN
- -110 J/kg
- Mixed-layer LCL
- 443 m above ground
- 0-6 km bulk shear
- 77 kt
- 0-1 km storm-relative helicity
- 330 m²/s²
- 0-3 km storm-relative helicity
- 430 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS51 KPHI 152054 SVRPHI PAC011-152145- /O.NEW.KPHI.SV.W.0268.081115T2054Z-081115T2145Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 354 PM EST SAT NOV 15 2008 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN BERKS COUNTY IN EASTERN PENNSYLVANIA... * UNTIL 445 PM EST * AT 351 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR FLEETWOOD...OR ABOUT 6 MILES NORTHEAST OF READING...AND MOVING NORTHEAST AT 50 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... 6 MILES SOUTHEAST OF KUTZTOWN BY 400 PM... A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM SATURDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW JERSEY AND SOUTHEASTERN PENNSYLVANIA. LAT...LON 4067 7588 4043 7555 4014 7590 4055 7597 TIME...MOT...LOC 2054Z 235DEG 43KT 4040 7580 $$ NIERENBERG
1 follow-up statement
000 WWUS51 KPHI 152132 SVSPHI SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 432 PM EST SAT NOV 15 2008 PAC011-152141- /O.CAN.KPHI.SV.W.0268.000000T0000Z-081115T2145Z/ BERKS PA- 431 PM EST SAT NOV 15 2008 ...THE SEVERE THUNDERSTORM WARNING FOR EASTERN BERKS COUNTY IS CANCELLED... THE SEVERE THUNDERSTORM HAS MOVED AWAY FROM THE AFFECTED AREA. THIS LINE OF SEVERE STORMS DID KNOCK DOWN TREES IN SPRING TOWNSHIP. A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM EST SATURDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW JERSEY AND SOUTHEASTERN PENNSYLVANIA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 900 PM EST SATURDAY EVENING FOR NORTHWESTERN NEW JERSEY AND NORTHEASTERN PENNSYLVANIA. LAT...LON 4067 7588 4043 7555 4014 7590 4055 7597 TIME...MOT...LOC 2131Z 235DEG 43KT 4062 7529 $$ TFG
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 15, 4:15 PM EST | Severe Thunderstorm Warning | PHI | Berks, Bucks, Chester, Lehigh, Montgomery | 60 min |
| Nov 15, 4:33 PM EST | Severe Thunderstorm Warning | PHI | Lehigh, Northampton | 38 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2008Every severe thunderstorm warning in 2008
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.