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 Jan 27, 2012, 8:27 AM EST for 4 states. It was in force for 93 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
- Jan 27, 2012, 8:27 AM EST (13:27 UTC)
- Expired
- Jan 27, 2012, 10:00 AM EST
- In force
- 93 min
- Issued by
- NWS Philadelphia/Mount Holly
Counties New Castle County, DE, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Gloucester County, NJ, Salem County, NJ, Bucks County, PA, Chester County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Dover AFB radar (KDOX), 79 km from the middle of the area, began a volume at 13:28 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 1.5 hours before the alert went out and 151 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
- 85 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 738 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 306 m²/s²
- 0-3 km storm-relative helicity
- 329 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
743
WWUS81 KPHI 271327
SPSPHI
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
827 AM EST FRI JAN 27 2012
DEZ001-002-MDZ008-012-015-020-NJZ015>019-021-PAZ067>071-271500-
BUCKS PA-CAMDEN NJ-CAROLINE MD-CECIL MD-CHESTER PA-CUMBERLAND NJ-
DELAWARE PA-GLOUCESTER NJ-KENT DE-KENT MD-MERCER NJ-MONTGOMERY PA-
NEW CASTLE DE-NORTHWESTERN BURLINGTON NJ-PHILADELPHIA PA-
QUEEN ANNE'S MD-SALEM NJ-
827 AM EST FRI JAN 27 2012
...SHOWERS WITH STRONG WIND GUSTS AND HEAVY RAIN WILL AFFECT
CAMDEN...MERCER...BUCKS...MONTGOMERY...PHILADELPHIA...DELAWARE...
GLOUCESTER...NEW CASTLE...CECIL...KENT...CHESTER...CAROLINE...
BURLINGTON...QUEEN ANNE'S...SALEM AND CUMBERLAND COUNTIES...
AT 820 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SHOWERS WITH STRONG WIND GUSTS ALONG A LINE EXTENDING FROM 13 MILES
SOUTHEAST OF READING TO 19 MILES SOUTHWEST OF ELKTON TO 25 MILES WEST
OF EASTON...MOVING EAST AT 45 MPH. THE SHOWERS WILL BE NEAR
CEDARVILLE...SOUTH POTTSTOWN...STOWE...PUGHTOWN AROUND 830 AM...
KENILWORTH...SANATOGA...POTTSTOWN...POTTSGROVE AROUND 835 AM...
CHESTER SPRINGS AND OLD TOWN AROUND 840 AM.
VERY HEAVY RAIN WILL FALL FROM THESE SHOWERS...AND WILL CAUSE WATER
TO POND ON ROADWAYS AND LOW LYING AREAS, AROUND A QUARTER OF AN INCH
OF RAIN IN ABOUT 30 MINUTES IS LIKELY AS THIS LINE MOVES THROUGH.
WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THESE SHOWERS. THIS WILL KNOCK
DOWN WEAK TREE BRANCHES.
PLEASE BE ALERT FOR CHANGING WEATHER CONDITIONS IF OUTDOORS THIS
MORNING.
LAT...LON 3904 7632 3900 7618 3914 7629 3932 7619
3943 7600 3952 7599 3959 7610 4014 7588
4028 7567 4042 7506 4034 7486 4042 7478
3967 7508 3933 7537 3948 7558 3926 7540
3903 7557 3888 7621 3894 7624 3884 7638
$$
TFGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 27, 4:54 AM EST | Gale Warning | PHI | 20 hr | |
| Jan 27, 9:38 AM EST | Special Marine Warning | PHI | 82 min | |
| Jan 27, 10:27 AM EST | Special Marine Warning | PHI | 63 min | |
| Jan 27, 10:31 AM EST | Special Weather Statement | PHI | Gloucester, Salem | 29 min |
| Jan 27, 11:06 AM EST | Special Weather Statement | PHI | Atlantic, Burlington, Camden, Ocean | 54 min |
| Jan 27, 2:15 PM EST | Wind Advisory | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more | 6 hr |
| Jan 27, 9:34 AM EST | Special Weather Statement | PHI | Kent, New Castle | 56 min |
Nearby
Special Weather Statements in Pennsylvania, 2012Special Weather Statements in Maryland, 2012Special Weather Statements in New Jersey, 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.