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 Oct 19, 2012, 10:27 PM EDT for Bucks County, Montgomery County, Pennsylvania. It was in force for 63 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
- Oct 19, 2012, 10:27 PM EDT (02:27 UTC)
- Expired
- Oct 19, 2012, 11:30 PM EDT
- In force
- 63 min
- Issued by
- NWS Philadelphia/Mount Holly
Counties Bucks County, PA, Montgomery County, PA
The radar
The Philadelphia radar (KDIX), 88 km from the middle of the area, began a volume at 02:30 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
Brookhaven, NY (KOKX), launched 00:00Z, 2.5 hours before the alert went out and 198 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
- 494 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 640 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 97 m²/s²
- 0-3 km storm-relative helicity
- 121 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
490
WWUS81 KPHI 200227
SPSPHI
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1027 PM EDT FRI OCT 19 2012
NJZ009-PAZ068-069-200330-
BUCKS PA-HUNTERDON NJ-MONTGOMERY PA-
1027 PM EDT FRI OCT 19 2012
...STRONG THUNDERSTORMS WILL AFFECT BUCKS...HUNTERDON AND MONTGOMERY
COUNTIES...
AT 1025 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR QUAKERTOWN TO
SKIPPACK...MOVING NORTHEAST AT 30 MPH. THE THUNDERSTORMS WILL BE
NEAR SPRINGTOWN AND PLEASANT VALLEY AROUND 1030 PM...REVERE AND
OTTSVILLE AROUND 1045 PM...PIPERSVILLE AND LUMBERVILLE AROUND 1100
PM...AND SERGEANTSVILLE AND HAMPTON AROUND 1115 PM.
ADDITIONAL HEAVY RAIN WILL OCCUR OVER AREAS THAT HAVE ALREADY
RECEIVED HEAVY RAINFALL. BE ALERT FOR THE POSSIBILITY OF LOCALIZED
FLOODING.
WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS.
LAT...LON 4038 7494 4009 7542 4009 7545 4049 7541
4057 7528 4060 7520 4059 7518 4063 7514
4069 7502 4069 7500 4073 7496
$$
IOVINOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 19, 9:36 PM EDT | Small Craft Advisory for Hazardous Seas | PHI | 18 hr | |
| Oct 19, 10:15 PM EDT | Special Weather Statement | PHI | Warren | 60 min |
| Oct 20, 3:16 PM EDT | Small Craft Advisory | PHI | 12 hr | |
| Oct 19, 8:31 PM EDT | Special Weather Statement | PHI | Berks | 44 min |
| Oct 19, 8:42 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 63 min |
| Oct 19, 8:59 PM EDT | Tornado Warning | PHI | Berks | 31 min |
| Oct 19, 9:24 PM EDT | Special Weather Statement | PHI | Chester, Delaware, Montgomery | 96 min |
| Oct 19, 10:00 PM EDT | Areal Flood Advisory | PHI | Chester, Delaware | 63 min |
| Oct 19, 10:36 PM EDT | Special Weather Statement | PHI | Caroline | 54 min |
Nearby
Special Weather Statements in Pennsylvania, 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.