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 Aug 16, 2016, 5:36 PM EDT for Chester County, Delaware County, Pennsylvania. It was in force for 54 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 16, 2016, 5:36 PM EDT (21:36 UTC)
- Expired
- Aug 16, 2016, 6:30 PM EDT
- In force
- 54 min
- Issued by
- NWS Philadelphia/Mount Holly
Counties Chester County, PA, Delaware County, PA
The radar
The Philadelphia radar (KDIX), 127 km from the middle of the area, began a volume at 21:37 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 12:00Z, 9.6 hours before the alert went out and 171 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
- 364 J/kg
- Mixed-layer CIN
- -175 J/kg
- Mixed-layer LCL
- 773 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 117 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
198
WWUS81 KPHI 162136
SPSPHI
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
536 PM EDT TUE AUG 16 2016
PAZ060-070-101>104-162230-
BERKS-WESTERN CHESTER-WESTERN MONTGOMERY-EASTERN MONTGOMERY-EASTERN
CHESTER-DELAWARE-
536 PM EDT TUE AUG 16 2016
...A FEW STRONG THUNDERSTORMS WILL AFFECT CHESTER...SOUTHEASTERN
BERKS...CENTRAL DELAWARE AND SOUTHWESTERN MONTGOMERY COUNTIES...
AT 535 PM EDT...AN AREA OF STRONG THUNDERSTORMS WERE
NEAR PARADISE...OR 9 MILES EAST OF WILLOW STREET...MOVING EAST AT 35
MPH.
WIND GUSTS UP TO 40 MPH ARE POSSIBLE WITH THIS STORM.
LOCATIONS IMPACTED INCLUDE...
WEST CHESTER...POTTSTOWN...PHOENIXVILLE...WEST
NORRITON...COATESVILLE...
WESTTOWN...DOWNINGTOWN...FOLCROFT...SWARTHMORE...KENNETT SQUARE...
COLLEGEVILLE...ROYERSFORD...PARKESBURG...TRAPPE...HONEY
BROOK...ELVERSON...
VALLEY FORGE...MARSHALLTON...HOMEVILLE AND GLENMOORE.
LAT...LON 3983 7602 3985 7602 3987 7599 3992 7600
3994 7598 3995 7600 4004 7593 4011 7594
4014 7588 4016 7589 4032 7554 3989 7527
3981 7603 3983 7604
TIME...MOT...LOC 2135Z 250DEG 32KT 3995 7610
$$
POThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 7:10 PM EDT | Special Weather Statement | PHI | Morris | 35 min |
| Aug 16, 4:08 PM EDT | Special Weather Statement | PHI | Berks | 67 min |
| Aug 16, 4:23 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Montgomery | 52 min |
| Aug 16, 5:08 PM EDT | Special Weather Statement | PHI | Chester | 52 min |
| Aug 16, 5:10 PM EDT | Special Weather Statement | PHI | Carbon | 35 min |
| Aug 16, 5:19 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh, Northampton | 41 min |
| Aug 16, 5:44 PM EDT | Special Weather Statement | PHI | Carbon, Monroe | 61 min |
| Aug 16, 6:31 PM EDT | Special Weather Statement | PHI | Delaware | 29 min |
| Aug 15, 8:36 PM EDT | Special Weather Statement | PHI | Talbot | 39 min |
| Aug 15, 9:22 PM EDT | Special Weather Statement | PHI | Caroline | 53 min |
| Aug 15, 10:44 PM EDT | Special Weather Statement | PHI | Queen Anne's | 61 min |
| Aug 16, 5:37 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 38 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.