Alert archive / Pennsylvania / Special Weather Statements in 2011

Special Weather Statement, NWS Philadelphia/Mount Holly

October 14, 2011Berks County, Lehigh County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Oct 14, 2011, 10:45 AM EDT for Berks County, Lehigh County, Pennsylvania. It was in force for 60 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: Oct 14, 2011, 10:45 AM EDT (14:45 UTC)
Expired: Oct 14, 2011, 11:45 AM EDT
In force: 60 min
Issued by: NWS Philadelphia/Mount Holly

Counties Berks County, PA, Lehigh County, PA

The radar

The Philadelphia radar (KDIX), 137 km from the middle of the area, began a volume at 14:49 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, 2.8 hours before the alert went out and 99 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: 262 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 748 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 63 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.

465 
WWUS81 KPHI 141445
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1045 AM EDT FRI OCT 14 2011

PAZ060-061-067-141545-
BERKS PA-CHESTER PA-LEHIGH PA-
1045 AM EDT FRI OCT 14 2011

...SCATTERED HEAVY SHOWERS AND A FEW STRONG THUNDERSTORMS WILL 
AFFECT BERKS...CHESTER AND LEHIGH COUNTIES...

AT 1040 AM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED AN AREA OF 
HEAVY SHOWERS AND ISOLATED STRONG THUNDERSTORMS 15 MILES WEST OF 
WEST CHESTER...MOVING NORTH AT 35 MPH. THE SHOWERS AND THUNDERSTORMS 
WILL BE NEAR GLENMOORE...HONEY BROOK AROUND 1055 AM...ELVERSON...NEW 
MORGAN AROUND 1105 AM...BIRDSBORO...AND SHILLINGTON AROUND 1115 
AM...AMITY GARDENS AND LORANE AROUND 1120 AM. ANY OF THE 
THUNDERSTORMS MAY PRODUCE DANGEROUS CLOUD TO GROUND LIGHTNING.

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.

LAT...LON 4054 7618 4059 7607 4059 7603 4065 7599
      4070 7569 4055 7544 4026 7569 4026 7566
      3989 7581 3991 7601 4003 7595 4011 7595
      4014 7590 4050 7644

$$

/ET

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 14, 12:15 AM EDT	Coastal Flood Advisory	PHI	Atlantic, Burlington, Cape May, Cumberland, Middlesex, Monmouth and 1 more	13 hr
Oct 14, 3:26 AM EDT	Coastal Flood Advisory	PHI	Burlington, Camden, Gloucester, Salem	19 hr
Oct 14, 4:01 AM EDT	Gale Watch	PHI		12 hr
Oct 14, 2:21 PM EDT	Special Weather Statement	PHI	Warren	54 min
Oct 14, 2:53 PM EDT	Special Weather Statement	PHI	Burlington, Camden, Hunterdon, Mercer, Somerset	67 min
Oct 14, 3:12 PM EDT	Special Weather Statement	PHI	Sussex, Warren	63 min
Oct 14, 3:59 PM EDT	Gale Watch	PHI		12 hr
Oct 14, 3:59 PM EDT	Gale Warning	PHI		27 hr
Oct 14, 3:59 PM EDT	Special Weather Statement	PHI	Middlesex, Monmouth, Morris	61 min
Oct 14, 11:38 AM EDT	Special Weather Statement	PHI	Berks, Carbon, Lehigh	52 min
Oct 14, 12:25 PM EDT	Special Weather Statement	PHI	Chester, Delaware, Montgomery	80 min
Oct 14, 12:51 PM EDT	Special Weather Statement	PHI	Lehigh	54 min
Oct 14, 1:22 PM EDT	Special Weather Statement	PHI	Carbon, Monroe, Northampton	53 min
Oct 14, 1:43 PM EDT	Special Weather Statement	PHI	Bucks, Delaware, Montgomery, Philadelphia	62 min
Oct 14, 11:21 AM EDT	Special Weather Statement	PHI	Cecil	54 min

Nearby

Special Weather Statements in Pennsylvania, 2011 Every 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.