Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 116, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 29, 2008, 8:47 PM EDT for Berks County, Pennsylvania. It was in force for 50 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
- Jun 29, 2008, 8:47 PM EDT (00:47 UTC)
- Expired
- Jun 29, 2008, 9:37 PM EDT
- In force
- 50 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
County Berks County, PA
The radar
The Philadelphia radar (KDIX), 152 km from the middle of the area, began a volume at 00:50 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 |
|---|---|---|---|
| Jun 29, 4:11 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 29, 8:09 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 0.8 hours before the alert went out and 198 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
- 662 J/kg
- Mixed-layer CIN
- -66 J/kg
- Mixed-layer LCL
- 1285 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 149 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.7
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 300049
SVRPHI
PAC011-300200-
/O.NEW.KPHI.SV.W.0116.080630T0047Z-080630T0200Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
847 PM EDT SUN JUN 29 2008
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
BERKS COUNTY IN EASTERN PENNSYLVANIA...
* UNTIL 1000 PM EDT
* AT 846 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
OF 60 MPH. THIS STORM WAS LOCATED 23 MILES WEST OF WOMELSDORF...OR
ABOUT 27 MILES NORTHWEST OF LANCASTER...AND MOVING EAST AT 37 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
WOMELSDORF AND STRAUSSTOWN BY 925 PM...
BERNVILLE AND 7 MILES NORTH OF WERNERSVILLE BY 930 PM...
LEESPORT...8 MILES NORTH OF READING AND 8 MILES SOUTH OF HAMBURG BY
945 PM...
FLEETWOOD AND 8 MILES SOUTH OF LENHARTSVILLE BY 955 PM...
THIS STORM HAS A HISTORY OF PRODUCING WIND DAMAGE. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS
A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 300 AM
MONDAY MORNING FOR NEW JERSEY AND EASTERN PENNSYLVANIA.
LAT...LON 4060 7583 4024 7576 4024 7605 4036 7621
4036 7623 4048 7641 4049 7641
TIME...MOT...LOC 0047Z 258DEG 32KT 4034 7662
$$
SZATKOWSKI1 follow-up statement
000
WWUS51 KPHI 300137
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
937 PM EDT SUN JUN 29 2008
PAC011-300147-
/O.CAN.KPHI.SV.W.0116.000000T0000Z-080630T0200Z/
BERKS PA-
937 PM EDT SUN JUN 29 2008
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL BERKS COUNTY IS
CANCELLED...
THE THUNDERSTORM THAT PROMPTED THE WARNING TO BE ISSUED HAS WEAKENED.
THE SEVERE THUNDERSTORM WARNING IS CANCELLED.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 AM EDT MONDAY
MORNING FOR NEW JERSEY AND EASTERN PENNSYLVANIA.
LAT...LON 4060 7583 4024 7576 4024 7605 4036 7621
4036 7623 4048 7641 4049 7641
TIME...MOT...LOC 0137Z 258DEG 32KT 4043 7605
$$
OHARANearby
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.