Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 27, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 27, 2008, 6:47 PM EDT for Berks County, Pennsylvania. It was in force for 29 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
- May 27, 2008, 6:47 PM EDT (22:47 UTC)
- Expired
- May 27, 2008, 7:16 PM EDT
- In force
- 29 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
County Berks County, PA
The radar
The Philadelphia radar (KDIX), 136 km from the middle of the area, began a volume at 22:48 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 nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 10.8 hours before the alert went out and 100 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1051 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 56 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 272247 SVRPHI PAC011-272330- /O.NEW.KPHI.SV.W.0027.080527T2247Z-080527T2330Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 647 PM EDT TUE MAY 27 2008 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... BERKS COUNTY IN EASTERN PENNSYLVANIA... * UNTIL 730 PM EDT * AT 644 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR BERNVILLE...OR ABOUT 14 MILES NORTHWEST OF READING...AND MOVING SOUTHEAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... LEESPORT AND 6 MILES NORTHEAST OF WERNERSVILLE BY 655 PM... READING BY 705 PM... BIRDSBORO BY 715 PM... IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT 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 4033 7564 4016 7588 4042 7628 4055 7613 TIME...MOT...LOC 2247Z 306DEG 35KT 4044 7610 $$
1 follow-up statement
000 WWUS51 KPHI 272316 SVSPHI SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 714 PM EDT TUE MAY 27 2008 PAC011-272324- /O.CAN.KPHI.SV.W.0027.000000T0000Z-080527T2330Z/ BERKS PA- 714 PM EDT TUE MAY 27 2008 ...THE SEVERE THUNDERSTORM WARNING FOR BERKS COUNTY IS CANCELLED... AS THE HEAVIEST CELLS HAVE WEAKENED, SEVERE WEATHER IS NO LONGER EXPECTED. HOWEVER, STRONG THUNDERSTORMS WILL CONTINUE TO MOVE SOUTHEASTWARD AT 25 MILES AN HOUR THROUGH THE SOUTHERN AND EASTERN PORTIONS OF BERKS COUNTY THROUGH 745 PM. WATCH FOR FREQUENT LIGHTING, HEAVY RAIN UP TO A HALF INCH, AS WELL AS SMALL HAIL IN ANY OF THE STRONGER THUNDERSTORMS. LAT...LON 4033 7564 4016 7588 4042 7628 4055 7613 TIME...MOT...LOC 2314Z 306DEG 35KT 4028 7582 $$
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.