Alert archive / Pennsylvania / Special Weather Statements in 2011
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Jun 28, 2011, 8:36 PM EDT for Berks County, Pennsylvania. It was in force for 39 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 28, 2011, 8:36 PM EDT (00:36 UTC)
- Expired
- Jun 28, 2011, 9:15 PM EDT
- In force
- 39 min
- Issued by
- NWS Philadelphia/Mount Holly
County Berks County, PA
The radar
The Philadelphia radar (KDIX), 154 km from the middle of the area, began a volume at 00:36 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
Washington/Dulle, VA (KIAD), launched 00:00Z, 0.6 hours before the alert went out and 214 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
- 256 J/kg
- Mixed-layer CIN
- -89 J/kg
- Mixed-layer LCL
- 1187 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 94 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.8
The text
As transmitted, in the capitals the NWS used until 2016.
857
WWUS81 KPHI 290036
SPSPHI
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
836 PM EDT TUE JUN 28 2011
PAZ060-290115-
BERKS PA-
836 PM EDT TUE JUN 28 2011
...A STRONG THUNDERSTORM WILL AFFECT A PORTION OF BERKS COUNTY...
AT 830 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 15 MILES NORTHWEST OF READING...MOVING EAST
NORTHEAST AT 15 MPH. THE THUNDERSTORM WILL BE NEAR
SHOEMAKERSVILLE...HAMBURG AROUND 845 PM...LENHARTSVILLE AROUND 900
PM...KUTZTOWN AND FLEETWOOD AROUND 915 PM.
VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS.
GUSTY WINDS AND SMALL HAIL ARE ALSO POSSIBLE WITH THIS STORM ALONG
WITH DANGEROUS CLOUD TO GROUND LIGHTNING.
LAT...LON 4055 7617 4057 7614 4058 7609 4059 7607
4060 7605 4059 7603 4063 7601 4066 7589
4046 7559 4039 7617
$$
RPWThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 12:48 AM EDT | Special Weather Statement | PHI | Sussex, Warren | 87 min |
| Jun 29, 1:02 AM EDT | Special Weather Statement | PHI | Atlantic | 58 min |
| Jun 29, 2:09 AM EDT | Special Weather Statement | PHI | Monmouth, Ocean | 96 min |
| Jun 29, 2:15 AM EDT | Special Marine Warning | PHI | 60 min | |
| Jun 28, 8:31 PM EDT | Special Weather Statement | PHI | Montgomery | 44 min |
| Jun 28, 9:36 PM EDT | Special Weather Statement | PHI | Delaware | 54 min |
| Jun 28, 9:57 PM EDT | Special Weather Statement | PHI | Carbon, Lehigh, Monroe, Northampton | 93 min |
| Jun 28, 9:05 PM EDT | Special Weather Statement | PHI | Kent, Queen Anne's | 55 min |
Nearby
Special Weather Statements in Pennsylvania, 2011Every special weather statement in 2011
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.