Alert archive / Pennsylvania / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

August 14, 2012Carbon County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 14, 2012, 6:02 AM EDT for Carbon County, Pennsylvania. It was in force for 88 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: Aug 14, 2012, 6:02 AM EDT (10:02 UTC)
Expired: Aug 14, 2012, 7:30 AM EDT
In force: 88 min
Issued by: NWS Philadelphia/Mount Holly

County Carbon County, PA

The radar

The Philadelphia radar (KDIX), 156 km from the middle of the area, began a volume at 10:04 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 00:00Z, 10.0 hours before the alert went out and 232 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 20 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 2056 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

877 
WWUS81 KPHI 141002
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
602 AM EDT TUE AUG 14 2012

PAZ054-060-061-141130-
BERKS PA-CARBON PA-LEHIGH PA-
602 AM EDT TUE AUG 14 2012

...A CLUSTER OF STRONG THUNDERSTORMS WILL AFFECT BERKS...CARBON AND 
LEHIGH COUNTIES...

AT 559 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
CLUSTER OF STRONG THUNDERSTORMS 21 MILES NORTH OF LANCASTER...MOVING 
NORTHEAST AT 15 MPH. THE THUNDERSTORMS WILL BE NEAR WOMELSDORF 
AROUND 645 AM...STRAUSSTOWN AND BERNVILLE AROUND 700 AM.

AS MUCH AS AN INCH OF RAIN COULD FALL IN LESS THAN 40 MINUTES WITH 
THE STRONGER STORMS. THIS MUCH RAIN COULD RESULT IN LOCALIZED STREET 
FLOODING. IN ADDITION...ANY THUNDERSTORM COULD PRODUCE A WIND GUST 
TO 35 MPH.

LAT...LON 4051 7638 4052 7624 4058 7602 4065 7599
      4074 7577 4088 7597 4098 7585 4101 7574
      4105 7577 4114 7567 4099 7554 4094 7557
      4083 7549 4080 7559 4075 7560 4039 7614
      4035 7620 4036 7623 4047 7640 4049 7642

$$

HAYES

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 14, 9:22 AM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester, Salem	38 min
Aug 14, 9:44 AM EDT	Special Weather Statement	PHI	Hunterdon, Mercer	91 min
Aug 14, 10:07 AM EDT	Special Weather Statement	PHI	Camden, Gloucester, Salem	83 min
Aug 14, 11:42 AM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Camden, Gloucester	3 hr
Aug 14, 2:35 PM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Ocean	78 min
Aug 14, 3:46 PM EDT	Flash Flood Warning	PHI	Atlantic, Burlington, Ocean	2 hr
Aug 14, 7:25 AM EDT	Special Weather Statement	PHI	Berks, Carbon, Lehigh	95 min
Aug 14, 8:06 AM EDT	Special Weather Statement	PHI	Chester, Lehigh	84 min
Aug 14, 8:39 AM EDT	Areal Flood Advisory	PHI	Berks, Bucks, Chester, Lehigh, Montgomery	2 hr
Aug 14, 9:56 AM EDT	Areal Flood Advisory	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	108 min
Aug 14, 4:12 PM EDT	Special Weather Statement	PHI	Delaware	63 min
Aug 14, 4:15 PM EDT	Special Weather Statement	PHI	Delaware, Philadelphia	60 min
Aug 14, 12:49 PM EDT	Special Weather Statement	PHI	Sussex	56 min
Aug 14, 2:13 PM EDT	Areal Flood Advisory	PHI	Kent	79 min
Aug 14, 2:28 PM EDT	Areal Flood Advisory	PHI	Kent, New Castle	2 hr
Aug 14, 3:01 PM EDT	Severe Thunderstorm Warning	PHI	Kent, New Castle	38 min
Aug 14, 3:22 PM EDT	Special Weather Statement	PHI	New Castle	53 min
Aug 14, 4:54 PM EDT	Special Weather Statement	PHI	Kent	66 min
Aug 14, 6:44 PM EDT	Special Weather Statement	PHI	Sussex	61 min
Aug 14, 7:42 AM EDT	Special Weather Statement	PHI	Kent	63 min
Aug 14, 2:02 PM EDT	Special Weather Statement	PHI	Queen Anne's	58 min

Nearby

Special Weather Statements in Pennsylvania, 2012 Every 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.