Alert archive / Pennsylvania / Special Weather Statements in 2013
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Jul 8, 2013, 4:03 PM EDT for Delaware County, Philadelphia County, Pennsylvania. It was in force for 87 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
- Jul 8, 2013, 4:03 PM EDT (20:03 UTC)
- Expired
- Jul 8, 2013, 5:30 PM EDT
- In force
- 87 min
- Issued by
- NWS Philadelphia/Mount Holly
Counties Delaware County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 78 km from the middle of the area, began a volume at 20:04 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
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 8.1 hours before the alert went out and 84 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
- 213 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 836 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.3
The text
As transmitted, in the capitals the NWS used until 2016.
103
WWUS81 KPHI 082003
SPSPHI
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
403 PM EDT MON JUL 8 2013
NJZ017>019-PAZ070-071-102-104-106-082130-
CAMDEN NJ-DELAWARE PA-EASTERN CHESTER PA-EASTERN MONTGOMERY PA-
GLOUCESTER NJ-LOWER BUCKS PA-NORTHWESTERN BURLINGTON NJ-
PHILADELPHIA PA-
403 PM EDT MON JUL 8 2013
...A STRONG THUNDERSTORM WILL AFFECT DELAWARE...EAST CENTRAL
CHESTER...NORTHWESTERN CAMDEN...NORTHWESTERN GLOUCESTER...
PHILADELPHIA...SOUTHEASTERN BUCKS...SOUTHEASTERN MONTGOMERY AND WEST
CENTRAL BURLINGTON COUNTIES...
AT 402 PM EDT...A STRONG THUNDERSTORM WAS NEAR WESTTOWN...MOVING EAST
AT 20 MPH.
WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM. FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. DO NOT STAY IN THE
OPEN NOR SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE
INDOORS WHEN A THUNDERSTORM APPROACHES. VERY HEAVY RAIN WILL FALL
FROM THIS STORM...AND WILL CAUSE WATER TO POND ON ROADS AND FILL POOR
DRAINAGE AREAS. THE RAIN CAN CAUSE RAPID RISES ON SMALL STREAMS AND
CREEKS. THIS STORM WILL BE NEAR CHEYNEY...CHEYNEY...WESTTOWN...AND
WESTTOWN AROUND 410 PM...GRADYVILLE...GRADYVILLE...LIMA...AND CHESTER
HEIGHTS AROUND 420 PM...UPPER PROVIDENCE TOWNSHIP AND NEWTOWN SQUARE
AROUND 430 PM.
LAT...LON 4017 7491 3983 7486 3982 7545 3984 7551
3984 7562 3982 7567 4000 7568
$$
NIERENBERGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 8:05 PM EDT | Severe Thunderstorm Warning | PHI | Morris | 40 min |
| Jul 7, 8:27 PM EDT | Special Weather Statement | PHI | Somerset | 48 min |
| Jul 7, 8:38 PM EDT | Severe Thunderstorm Warning | PHI | Morris | 52 min |
| Jul 8, 3:03 PM EDT | Special Weather Statement | PHI | Burlington | 57 min |
| Jul 8, 5:20 PM EDT | Special Weather Statement | PHI | Atlantic | 55 min |
| Jul 8, 3:31 PM EDT | Special Weather Statement | PHI | Chester, Delaware | 59 min |
| Jul 8, 2:25 PM EDT | Special Weather Statement | PHI | New Castle | 95 min |
Nearby
Special Weather Statements in Pennsylvania, 2013Every special weather statement in 2013
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.