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 Jul 9, 2016, 2:40 PM EDT for Chester County, Pennsylvania. It was in force for 50 min. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 9, 2016, 2:40 PM EDT (18:40 UTC)
- Expired
- Jul 9, 2016, 3:30 PM EDT
- In force
- 50 min
- Issued by
- NWS Philadelphia/Mount Holly
County Chester County, PA
The radar
The Philadelphia radar (KDIX), 127 km from the middle of the area, began a volume at 18:42 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 9, 3:00 PM EDT | TSTM WND DMG | Honey Brook, PA | TREES DOWN |
| Jul 9, 3:15 PM EDT | HAIL 0.25 | East Brandywine Twp, PA | |
| Jul 9, 3:20 PM EDT | TSTM WND GST 55 | East Brandywine Twp, PA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 6.7 hours before the alert went out and 173 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
- 10 J/kg
- Mixed-layer CIN
- -183 J/kg
- Mixed-layer LCL
- 1248 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- -24 m²/s²
- 0-3 km storm-relative helicity
- 68 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
879
WWUS81 KPHI 091840
SPSPHI
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
240 PM EDT SAT JUL 9 2016
PAZ101-102-091930-
WESTERN CHESTER-EASTERN CHESTER-
240 PM EDT SAT JUL 9 2016
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT CENTRAL CHESTER
COUNTY...
AT 239 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS ALONG A LINE
EXTENDING FROM HONEY BROOK TO PARADISE...AND MOVING EAST AT 20 MPH.
WIND GUSTS UP TO 30 MPH ARE POSSIBLE WITH THESE STORMS.
LOCATIONS IMPACTED INCLUDE...
COATESVILLE...DOWNINGTOWN...PARKESBURG...HONEY BROOK...
CHESTER SPRINGS...COCHRANVILLE...GLENMOORE...LIONVILLE-MARCHWOOD...
LIONVILLE...ATGLEN...SOUTH COATESVILLE...CHRISTIANA...MODENA...
THORNDALE AND EXTON.
TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...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 4004 7593 4010 7594 4012 7590 4009 7549
3985 7584 3990 7600 3992 7600 3993 7598
3995 7600
TIME...MOT...LOC 1839Z 280DEG 16KT 4011 7589 3998 7611
$$
ROBERTSONThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 8:12 PM EDT | Flash Flood Warning | PHI | Atlantic, Burlington | 4 hr |
| Jul 9, 3:55 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 50 min |
| Jul 9, 4:08 PM EDT | Special Marine Warning | PHI | 67 min | |
| Jul 9, 4:15 PM EDT | Areal Flood Advisory | PHI | Gloucester, Salem | 4 hr |
| Jul 9, 4:47 PM EDT | Special Weather Statement | PHI | Salem | 43 min |
| Jul 9, 6:11 PM EDT | Special Weather Statement | PHI | Salem | 34 min |
| Jul 9, 6:31 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cumberland, Salem | 44 min |
| Jul 9, 6:33 PM EDT | Special Marine Warning | PHI | 57 min | |
| Jul 9, 6:43 PM EDT | Areal Flood Advisory | PHI | Cumberland, Salem | 4 hr |
| Jul 9, 7:07 PM EDT | Special Marine Warning | PHI | 53 min | |
| Jul 9, 7:07 PM EDT | Severe Thunderstorm Warning | PHI | Cape May, Cumberland | 33 min |
| Jul 9, 7:33 PM EDT | Special Weather Statement | PHI | Warren | 57 min |
| Jul 9, 12:35 PM EDT | Special Weather Statement | PHI | Berks | 25 min |
| Jul 9, 12:59 PM EDT | Special Weather Statement | PHI | Berks | 31 min |
| Jul 9, 1:27 PM EDT | Special Weather Statement | PHI | Berks | 48 min |
| Jul 9, 3:17 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 43 min |
| Jul 9, 4:48 PM EDT | Special Weather Statement | PHI | Caroline, Talbot | 57 min |
| Jul 9, 5:00 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 30 min |
| Jul 9, 2:38 PM EDT | Special Weather Statement | PHI | Sussex | 22 min |
| Jul 9, 3:13 PM EDT | Special Weather Statement | PHI | Sussex | 62 min |
| Jul 9, 4:11 PM EDT | Special Weather Statement | PHI | New Castle | 34 min |
| Jul 9, 5:31 PM EDT | Special Weather Statement | PHI | New Castle | 29 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.