Alert archive / Pennsylvania / Special Weather Statements in 2012
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Sep 22, 2012, 7:02 PM EDT for Delaware County, Philadelphia County, Pennsylvania; New Castle County, Delaware. It was in force for 58 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
- Sep 22, 2012, 7:02 PM EDT (23:02 UTC)
- Expired
- Sep 22, 2012, 8:00 PM EDT
- In force
- 58 min
- Issued by
- NWS Philadelphia/Mount Holly
Counties New Castle County, DE, Delaware County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 73 km from the middle of the area, began a volume at 23:02 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, 11.0 hours before the alert went out and 213 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
- 34 J/kg
- Mixed-layer CIN
- -233 J/kg
- Mixed-layer LCL
- 877 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 175 m²/s²
- 0-3 km storm-relative helicity
- 158 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
177
WWUS81 KPHI 222302
SPSPHI
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
702 PM EDT SAT SEP 22 2012
DEZ001-MDZ008-NJZ016>019-PAZ067-068-070-071-230000-
CAMDEN NJ-CECIL MD-CHESTER PA-DELAWARE PA-GLOUCESTER NJ-MONTGOMERY PA-
NEW CASTLE DE-NORTHWESTERN BURLINGTON NJ-PHILADELPHIA PA-SALEM NJ-
702 PM EDT SAT SEP 22 2012
...STRONG THUNDERSTORMS WILL AFFECT BURLINGTON...CAMDEN...CECIL...
CHESTER...DELAWARE...GLOUCESTER...MONTGOMERY...NEW CASTLE...
PHILADELPHIA AND SALEM COUNTIES...
AT 658 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 13 MILES EAST OF
WEST CHESTER TO 7 MILES NORTH OF NEWARK TO 7 MILES SOUTH OF NEWARK...
MOVING NORTHEAST AT 35 MPH. THE THUNDERSTORMS WILL BE NEAR MORRIS
PARK...ROXBOROUGH AROUND 715 PM...NORTHEAST PHILADELPHIA...ROCKLEDGE
AROUND 730 PM...WISSINOMING...TACONY AROUND 745 PM...WESTVILLE AND
BROOKLAWN AROUND 800 PM.
BE PREPARED FOR RAPIDLY CHANGING WEATHER AND MOVE INDOORS AT THE
FIRST SIGN OF THREATENING WEATHER. THIS LINE SHALL AFFECT PHILADELPHIA
AND CAMDEN.
KIDX DOPPLER RADAR HAS BEEN CONSISTENTLY SHOWING WINDS OF AROUND 40 MPH
WITH THIS LINE AND A COUPLE OF MESONET SITES IN CHESTER COUNTY HAD WIND
GUSTS TO THIS LEVEL.
VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL POOR DRAINAGE AREAS.
CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. DO
NOT SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS
WHEN A THUNDERSTORM APPROACHES.
LAT...LON 3982 7581 4003 7540 4010 7503 4007 7497
4005 7498 4006 7494 4005 7491 3981 7498
3950 7582
$$
TFGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 22, 3:51 AM EDT | Small Craft Advisory | PHI | 34 hr | |
| Sep 22, 5:26 AM EDT | Rip Current Statement | PHI | Atlantic, Cape May, Monmouth, Ocean | 15 hr |
| Sep 22, 6:19 PM EDT | Special Weather Statement | PHI | Warren | 56 min |
| Sep 22, 6:46 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Sussex, Warren | 74 min |
| Sep 22, 7:39 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester | 66 min |
| Sep 22, 7:52 PM EDT | Special Weather Statement | PHI | Somerset | 38 min |
| Sep 22, 5:11 PM EDT | Special Weather Statement | PHI | Chester | 64 min |
| Sep 22, 6:02 PM EDT | Special Weather Statement | PHI | Chester, Delaware | 88 min |
| Sep 22, 6:14 PM EDT | Special Weather Statement | PHI | Lehigh | 61 min |
| Sep 22, 7:22 PM EDT | Special Weather Statement | PHI | New Castle | 53 min |
| Sep 22, 6:30 PM EDT | Special Weather Statement | PHI | Cecil | 60 min |
Nearby
Special Weather Statements in Pennsylvania, 2012Special Weather Statements in Delaware, 2012Every special weather statement in 2012
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.