Alert archive / Pennsylvania / Special Weather Statements in 2011
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Sep 4, 2011, 9:02 PM EDT for 4 counties in Pennsylvania. It was in force for 2 hr. 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 4, 2011, 9:02 PM EDT (01:02 UTC)
- Expired
- Sep 4, 2011, 11:30 PM EDT
- In force
- 2 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Berks County, PA, Carbon County, PA, Lehigh County, PA, Monroe County, PA
The radar
The Binghamton radar (KBGM), 148 km from the middle of the area, began a volume at 01:03 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, 1.0 hours before the alert went out and 241 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
- 403 J/kg
- Mixed-layer CIN
- -186 J/kg
- Mixed-layer LCL
- 708 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -27 m²/s²
- 0-3 km storm-relative helicity
- -16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted, in the capitals the NWS used until 2016.
203
WWUS81 KPHI 050102
SPSPHI
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
902 PM EDT SUN SEP 4 2011
PAZ054-055-060>062-050330-
BERKS PA-CARBON PA-LEHIGH PA-MONROE PA-NORTHAMPTON PA-
902 PM EDT SUN SEP 4 2011
...STRONG THUNDERSTORMS WILL AFFECT BERKS...CARBON...LEHIGH...MONROE
AND NORTHAMPTON COUNTIES...
AT 852 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM ABOUT 20 MILES WEST
OF WILKES-BARRE TO ABOUT 60 MILES WEST OF LANCASTER THAT WAS MOVING
EAST AT 20 MPH. AT THEIR PRESENT SPEED...THE THUNDERSTORMS WILL BE
NEAR WHITE HAVEN AND TRESCKOW AROUND 1000 PM...GOULDSBORO STATE PARK
AND BLAKESLEE AROUND 1015 PM...TOBYHANNA AND LAKE HARMONY AROUND
1030 PM...SKYTOP AND POCONO RACEWAY AROUND 1045 PM...AND NEW
MAHONING AND MECKESVILLE AROUND 1100 PM.
UP TO AROUND AN INCH OF RAIN WILL FALL FROM THESE STORMS...AND WILL
CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND
SMALL STREAMS.
WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS.
EXPECT INTENSE LIGHTNING FROM THESE STORMS. DO NOT SEEK SHELTER UNDER
TREES WHEN LIGHTNING THREATENS...MOVE INDOORS WHEN A THUNDERSTORM
APPROACHES.
LAT...LON 4116 7516 4115 7509 4108 7504 4021 7601
4049 7644 4051 7643 4054 7618 4060 7605
4059 7603 4064 7600 4074 7578 4091 7600
4101 7575 4105 7578 4111 7576 4114 7570
4113 7564 4123 7554 4125 7513
$$
MPDThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 4, 9:14 PM EDT | Small Craft Advisory | PHI | 5 days | |
| Sep 5, 12:32 AM EDT | Special Weather Statement | PHI | Sussex | 28 min |
| Sep 5, 6:03 PM EDT | Special Weather Statement | PHI | Camden, Gloucester, Hunterdon, Mercer, Middlesex, Morris and 4 more | 117 min |
| Sep 5, 7:06 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Morris, Somerset, Sussex, Warren | 3 hr |
| Sep 4, 10:15 PM EDT | Special Weather Statement | PHI | Berks, Carbon | 60 min |
| Sep 4, 10:36 PM EDT | Special Weather Statement | PHI | Carbon | 24 min |
| Sep 4, 11:07 PM EDT | Special Weather Statement | PHI | Lehigh | 53 min |
| Sep 4, 11:20 PM EDT | Special Weather Statement | PHI | Berks, Carbon, Lehigh, Monroe | 40 min |
| Sep 4, 11:50 PM EDT | Special Weather Statement | PHI | Monroe, Northampton | 40 min |
| Sep 5, 12:38 AM EDT | Special Weather Statement | PHI | Berks | 52 min |
| Sep 5, 1:40 AM EDT | Special Weather Statement | PHI | Berks, Carbon, Lehigh, Monroe | 50 min |
Nearby
Special Weather Statements in Pennsylvania, 2011Every special weather statement in 2011
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.