Alert archive / Pennsylvania / Special Weather Statements in 2016
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Jun 21, 2016, 8:38 PM EDT for Chester County, Pennsylvania. It was in force for 52 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 21, 2016, 8:38 PM EDT (00:38 UTC)
- Expired
- Jun 21, 2016, 9:30 PM EDT
- In force
- 52 min
- Issued by
- NWS Philadelphia/Mount Holly
County Chester County, PA
The radar
The Philadelphia radar (KDIX), 122 km from the middle of the area, began a volume at 00:41 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 196 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
- 677 J/kg
- Mixed-layer CIN
- -130 J/kg
- Mixed-layer LCL
- 1204 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 131 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
272
WWUS81 KPHI 220038
SPSPHI
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
838 PM EDT TUE JUN 21 2016
PAZ060-101>103-220130-
BERKS-WESTERN CHESTER-WESTERN MONTGOMERY-EASTERN CHESTER-
838 PM EDT TUE JUN 21 2016
...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN CHESTER...
SOUTHEASTERN BERKS AND WEST CENTRAL MONTGOMERY COUNTIES...
AT 837 PM EDT...A STRONG THUNDERSTORM WAS OVER NEW MORGAN...OR 7
MILES SOUTH OF READING...MOVING EAST AT 20 MPH.
WIND GUSTS UP TO 30 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THIS
STORM.
LOCATIONS IMPACTED INCLUDE...
READING...POTTSTOWN...PHOENIXVILLE...BIRDSBORO...ROYERSFORD...
TRAPPE...ELVERSON...GREEN LANE...NEW MORGAN...CEDARVILLE...
CHESTER SPRINGS...GILBERTSVILLE...PUGHTOWN...STOWE...SHILLINGTON...
BOYERTOWN...SPRING CITY...KENHORST...AMITY GARDENS AND HALFWAY HOUSE.
TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY CAUSE
LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.
LAT...LON 4031 7596 4034 7547 4007 7550 4012 7591
4014 7588 4020 7597
TIME...MOT...LOC 0037Z 273DEG 16KT 4022 7588
$$
ROBERTSONThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 8:50 PM EDT | Special Marine Warning | PHI | 55 min | |
| Jun 21, 9:41 PM EDT | Special Weather Statement | PHI | Berks | 34 min |
Nearby
Special Weather Statements in Pennsylvania, 2016Every special weather statement in 2016
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.