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 Apr 11, 2011, 8:04 PM EDT for Hunterdon County, Sussex County, Warren County, New Jersey; 6 counties in Pennsylvania. It was in force for 56 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
- Apr 11, 2011, 8:04 PM EDT (00:04 UTC)
- Expired
- Apr 11, 2011, 9:00 PM EDT
- In force
- 56 min
- Issued by
- NWS Philadelphia/Mount Holly
Counties Hunterdon County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Chester County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 115 km from the middle of the area, began a volume at 00:07 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, 0.1 hours before the alert went out and 182 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1321 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 283 m²/s²
- 0-3 km storm-relative helicity
- 274 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
The text
As transmitted, in the capitals the NWS used until 2016.
079
WWUS81 KPHI 120004
SPSPHI
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
804 PM EDT MON APR 11 2011
NJZ001-007>009-PAZ054-055-060>062-067>069-120100-
BERKS PA-BUCKS PA-CARBON PA-CHESTER PA-HUNTERDON NJ-LEHIGH PA-
MONROE PA-MONTGOMERY PA-MORRIS NJ-NORTHAMPTON PA-SUSSEX NJ-WARREN NJ-
804 PM EDT MON APR 11 2011
...HEAVY SHOWERS AND A FEW STRONG THUNDERSTORMS WILL AFFECT
BERKS...BUCKS...CARBON...CHESTER...HUNTERDON...LEHIGH...MONROE...
MONTGOMERY...MORRIS...NORTHAMPTON...SUSSEX AND WARREN COUNTIES...
AT 8:00 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED HEAVY
SHOWERS AND A FEW STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM
13 MILES WEST OF MONTAGUE TO 23 MILES SOUTHWEST OF LANCASTER...
MOVING EAST AT 35 TO 40 MILES AN HOUR. THE SHOWERS AND THUNDERSTORMS
WILL BE NEAR STORMVILLE...SAYLORSBURG...COFFEETOWN...AND CLAUSSVILLE
AROUND 810 PM...ECHO LAKE...WIND GAP...TOPTON...AND NORTHAMPTON
AROUND 815 PM...AND HAINESVILLE AND AND FLATBROOKVILLE AROUND 820 PM.
VERY HEAVY RAIN WILL FALL FROM SOME OF THESE STORMS...AND WILL CAUSE
WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL
STREAMS.
WIND GUSTS TO 40 MPH ARE POSSIBLE WITH SOME OF THESE STORMS...AS IS
SMALL HAIL AND OCCASIONAL BUT DANGEROUS CLOUD TO GROUND LIGHTNING.
LAT...LON 4121 7439 4118 7437 4108 7449 4104 7449
4105 7444 4101 7440 3990 7565 3985 7602
4011 7595 4014 7590 4032 7617 4124 7514
4116 7516 4115 7509 4109 7503 4111 7495
4127 7484 4135 7471
$$The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 11, 9:03 PM EDT | Special Weather Statement | PHI | Hunterdon, Morris, Warren | 57 min |
| Apr 12, 4:33 PM EDT | Special Marine Warning | PHI | 35 min | |
| Apr 12, 4:52 PM EDT | Special Weather Statement | PHI | Cumberland | 53 min |
| Apr 12, 5:15 PM EDT | Special Weather Statement | PHI | Camden | 45 min |
| Apr 12, 5:37 PM EDT | Special Weather Statement | PHI | Atlantic, Burlington, Camden, Gloucester | 23 min |
| Apr 12, 6:04 PM EDT | Special Weather Statement | PHI | Atlantic, Burlington, Camden, Cape May, Gloucester, Mercer and 3 more | 41 min |
| Apr 12, 6:47 PM EDT | Special Weather Statement | PHI | Burlington, Middlesex, Monmouth, Ocean, Somerset | 58 min |
| Apr 12, 10:00 AM EDT | Special Weather Statement | PHI | Montgomery | 90 min |
| Apr 12, 2:24 PM EDT | Special Weather Statement | PHI | Talbot | 66 min |
| Apr 12, 3:45 PM EDT | Special Weather Statement | PHI | Caroline | 45 min |
| Apr 12, 4:29 PM EDT | Special Weather Statement | PHI | Kent | 61 min |
Nearby
Special Weather Statements in Pennsylvania, 2011Special Weather Statements in New Jersey, 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.