Alert archive / New Jersey / Special Weather Statements in 2011
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Nov 29, 2011, 12:48 PM EST for 4 counties in New Jersey; Berks County, Chester County, Delaware County, Pennsylvania; New Castle County, Delaware. It was in force for 57 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
- Nov 29, 2011, 12:48 PM EST (17:48 UTC)
- Expired
- Nov 29, 2011, 1:45 PM EST
- In force
- 57 min
- Issued by
- NWS Philadelphia/Mount Holly
Counties New Castle County, DE, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ, Berks County, PA, Chester County, PA, Delaware County, PA
The radar
The Dover AFB radar (KDOX), 101 km from the middle of the area, began a volume at 17:50 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
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 5.8 hours before the alert went out and 54 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
- 71 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 801 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- -35 m²/s²
- 0-3 km storm-relative helicity
- -75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
002
WWUS81 KPHI 291748
SPSPHI
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1248 PM EST TUE NOV 29 2011
DEZ001-002-NJZ016>018-021>024-PAZ060-067-068-070-071-291845-
ATLANTIC NJ-ATLANTIC COASTAL CAPE MAY NJ-BERKS PA-CAMDEN NJ-
CAPE MAY NJ-CHESTER PA-CUMBERLAND NJ-DELAWARE PA-GLOUCESTER NJ-
KENT DE-MONTGOMERY PA-NEW CASTLE DE-PHILADELPHIA PA-SALEM NJ-
1248 PM EST TUE NOV 29 2011
...A LINE OF HEAVY SHOWERS WITH GUSTY WINDS WILL AFFECT PORTIONS OF
KENT...SALEM...CUMBERLAND...CAMDEN...GLOUCESTER...DELAWARE...
PHILADELPHIA...CHESTER...MONTGOMERY...BERKS...NEW CASTLE...CAPE MAY
AND ATLANTIC COUNTIES...
AT 1245 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF HEAVY SHOWERS WITH GUSTY WINDS FROM NEAR HARRISBURG IN
SOUTHEASTERN PENNSYLVANIA TO NORTHERN DELAWARE THEN DOWN TO NEAR THE
LOWER DELAWARE BAY. THIS LINE IS MOVING NORTHWARD AT 30 MPH.
ALONG MAINLY THE LEADING EDGE OF THIS LINE OF HEAVIER SHOWERS, WINDS
WILL GUST UP TO 40 MPH. USE CAUTION WHILE DRIVING, ESPECIALLY HIGH
PROFILE VEHICLES AND TRAVELING ACROSS BRIDGES AND OTHER ELEVATED
SURFACES.
LAT...LON 4051 7643 4059 7603 4068 7592 3962 7480
3928 7462 3929 7460 3896 7497 3916 7491
3919 7518 3946 7555 3958 7556 3950 7558
3920 7539 3920 7540 3963 7579 3972 7579
3984 7604 4014 7590 4050 7644
$$
FORECASTER: GORSEThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 29, 12:12 PM EST | Special Weather Statement | PHI | Cape May, Cumberland, Salem | 63 min |
| Nov 29, 2:05 PM EST | Special Weather Statement | PHI | Burlington, Camden, Gloucester | 55 min |
| Nov 29, 4:27 PM EST | Areal Flood Advisory | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 4 more | 4 hr |
Nearby
Special Weather Statements in New Jersey, 2011Special Weather Statements in Pennsylvania, 2011Special Weather Statements in Delaware, 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.