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 Aug 3, 2011, 8:11 PM EDT for 4 counties in Pennsylvania. It was in force for 64 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 3, 2011, 8:11 PM EDT (00:11 UTC)
- Expired
- Aug 3, 2011, 9:15 PM EDT
- In force
- 64 min
- Issued by
- NWS Philadelphia/Mount Holly
Counties Berks County, PA, Carbon County, PA, Lehigh County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 149 km from the middle of the area, began a volume at 00:14 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, 0.2 hours before the alert went out and 241 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
- 127 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 866 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 121 m²/s²
- 0-3 km storm-relative helicity
- 211 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
473
WWUS81 KPHI 040011
SPSPHI
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
811 PM EDT WED AUG 3 2011
NJZ007-PAZ054-055-060>062-040115-
BERKS PA-CARBON PA-LEHIGH PA-MONROE PA-NORTHAMPTON PA-WARREN NJ-
811 PM EDT WED AUG 3 2011
...SCATTERED THUNDERSTORMS WILL AFFECT BERKS...CARBON...LEHIGH...
MONROE...NORTHAMPTON AND WARREN COUNTIES...
AT 802 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
EMBEDDED THUNDERSTORMS WITHIN A LINE OF HEAVIER SHOWERS EXTENDING
FROM 10 MILES NORTH OF LEHIGHTON TO 39 MILES NORTHWEST OF READING TO
70 MILES WEST OF WILKES-BARRE...MOVING SOUTHEAST AT 25 MPH. THE
THUNDERSTORMS SHOULD BE NEAR CHRISTMANS...SUMMIT HILL AROUND 815
PM...PENN FOREST RESERVOIR...NEW MAHONING AROUND 830
PM...WANAMAKERS...NEW TRIPOLI AROUND 845 PM...NEFFS...COFFEETOWN
AROUND 900 PM...FULLERTON AND KUTZTOWN AROUND 915 PM.
A SHORT PERIOD OF HEAVY RAINFALL WILL OCCUR IN A FEW PLACES. BE
ALERT FOR THE POSSIBILITY OF LOCALIZED FLOODING.
LAT...LON 4069 7507 4039 7591 4054 7622 4058 7609
4059 7607 4059 7603 4064 7600 4074 7578
4084 7594 4091 7600 4098 7584 4100 7575
4102 7575 4103 7572
$$
FORECASTER: DRAGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 8:53 PM EDT | Special Weather Statement | PHI | Sussex | 52 min |
| Aug 3, 9:53 PM EDT | Special Weather Statement | PHI | Mercer | 52 min |
| Aug 3, 10:33 PM EDT | Special Weather Statement | PHI | Atlantic, Burlington, Camden, Gloucester, Hunterdon, Mercer and 3 more | 117 min |
| Aug 4, 12:18 AM EDT | Special Weather Statement | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Ocean and 1 more | 117 min |
| Aug 4, 3:55 AM EDT | Coastal Flood Advisory | PHI | Atlantic, Burlington, Cape May, Cumberland, Middlesex, Monmouth and 1 more | 11 hr |
| Aug 3, 9:02 PM EDT | Special Weather Statement | PHI | Berks, Bucks, Montgomery | 58 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.