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 7, 2012, 1:57 AM EDT for Berks County, Pennsylvania. It was in force for 2 hr. 2 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
- Sep 7, 2012, 1:57 AM EDT (05:57 UTC)
- Expired
- Sep 7, 2012, 4:00 AM EDT
- In force
- 2 hr
- Issued by
- NWS Philadelphia/Mount Holly
County Berks County, PA
The radar
The Philadelphia radar (KDIX), 158 km from the middle of the area, began a volume at 06:00 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 |
|---|---|---|---|
| Sep 7, 3:44 AM EDT | TSTM WND DMG | Tulpehocken Twp, PA | WIRES DOWN ACROSS DECK ROAD IN TULPEHOCKEN TWP. |
| Sep 7, 3:58 AM EDT | TSTM WND DMG | Womelsdorf, PA | TREE DOWN ALONG NORTH WATER STREET IN WOMELSDORF. |
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 00:00Z, 6.0 hours before the alert went out and 212 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
- 1253 J/kg
- Mixed-layer CIN
- -47 J/kg
- Mixed-layer LCL
- 898 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 104 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.9
The text
As transmitted, in the capitals the NWS used until 2016.
732
WWUS81 KPHI 070557
SPSPHI
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
157 AM EDT FRI SEP 7 2012
PAZ060-061-070800-
BERKS PA-LEHIGH PA-
157 AM EDT FRI SEP 7 2012
...A STRONG THUNDERSTORM WILL AFFECT BERKS AND LEHIGH COUNTIES...
AT 152 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 37 MILES NORTHWEST OF READING...MOVING SOUTHEAST
AT 15 MPH. THE THUNDERSTORM WILL BE NEAR STRAUSSTOWN AROUND 300 AM...
WOMELSDORF AROUND 315 AM...HAMBURG...BERNVILLE AROUND 330 AM...
SHOEMAKERSVILLE AND CENTERPORT AROUND 345 AM.
WIND GUSTS TO 50 MPH AND SMALL HAIL UP TO PENNY SIZE ARE POSSIBLE
WITH THIS STORM. IF THIS STORM INTENSIFIES ANY FURTHER, IT MAY BECOME
NECESSARY TO ISSUE A SEVERE THUNDERSTORM WARNING FOR IT.
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. DO
NOT SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS
WHEN A THUNDERSTORM APPROACHES.
LAT...LON 4052 7635 4052 7624 4058 7606 4058 7602
4063 7601 4065 7599 4074 7576 4072 7563
4030 7614 4050 7640
$$
TFGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 8:35 PM EDT | Small Craft Advisory for Hazardous Seas | PHI | 18 hr | |
| Sep 7, 3:03 PM EDT | Small Craft Advisory | PHI | 33 hr | |
| Sep 6, 9:01 PM EDT | Special Weather Statement | PHI | Monroe | 89 min |
| Sep 6, 10:31 PM EDT | Special Weather Statement | PHI | Carbon | 119 min |
| Sep 6, 11:12 PM EDT | Severe Thunderstorm Warning | PHI | Carbon | 65 min |
| Sep 7, 3:39 AM EDT | Severe Thunderstorm Warning | PHI | Berks | 81 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.