Alert archive / Pennsylvania / Special Weather Statements in 2016

Special Weather Statement, NWS Philadelphia/Mount Holly

July 31, 2016Berks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 31, 2016, 10:33 PM EDT for Berks County, Pennsylvania. 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: Jul 31, 2016, 10:33 PM EDT (02:33 UTC)
Expired: Jul 31, 2016, 11:30 PM EDT
In force: 57 min
Issued by: NWS Philadelphia/Mount Holly

County Berks County, PA

The radar

The Philadelphia radar (KDIX), 158 km from the middle of the area, began a volume at 02:33 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, 2.6 hours before the alert went out and 208 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: 988 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 1158 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 56 m²/s²
0-3 km storm-relative helicity: 40 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

As transmitted.

811 
WWUS81 KPHI 010233
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1033 PM EDT SUN JUL 31 2016
 
PAZ060-010330-
BERKS-
1033 PM EDT SUN JUL 31 2016

...A THUNDERSTORM WILL AFFECT CENTRAL BERKS COUNTY...

AT 1032 PM EDT...A THUNDERSTORM WAS NEAR FRIEDENSBURG...OR NEAR
SCHUYLKILL HAVEN...MOVING SOUTHEAST AT 20 MPH.

WIND GUSTS UP TO 30 MPH ARE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
KUTZTOWN...HAMBURG...WOMELSDORF...WERNERSVILLE...NEWMANSTOWN...
LEESPORT...SHOEMAKERSVILLE...BERNVILLE...STRAUSSTOWN...
LENHARTSVILLE...FAIRVIEW HGTS AND CENTERPORT.

HEAVY RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY CAUSE
LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

OCCASIONAL CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

LAT...LON 4051 7638 4052 7625 4058 7605 4057 7602
      4065 7598 4068 7590 4068 7589 4057 7572
      4028 7610 4036 7621 4048 7641
TIME...MOT...LOC 0232Z 317DEG 18KT 4055 7625 
$$

KRUZDLO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 31, 8:02 PM EDT	Areal Flood Warning	PHI	Somerset	4 hr
Jul 31, 8:10 PM EDT	Areal Flood Advisory	PHI	Morris	4 hr
Aug 1, 7:26 AM EDT	Special Weather Statement	PHI	Ocean	49 min
Aug 1, 3:18 PM EDT	Special Weather Statement	PHI	Salem	87 min
Aug 1, 3:56 PM EDT	Special Marine Warning	PHI		64 min
Aug 1, 3:56 PM EDT	Special Marine Warning	PHI		64 min
Aug 1, 5:33 PM EDT	Areal Flood Advisory	PHI	Cumberland	4 hr
Aug 1, 5:39 PM EDT	Special Marine Warning	PHI		66 min
Aug 1, 5:51 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Salem	35 min
Jul 31, 11:38 PM EDT	Special Weather Statement	PHI	Lehigh	37 min
Aug 1, 4:23 PM EDT	Special Weather Statement	PHI	Monroe	52 min
Aug 1, 5:39 PM EDT	Special Weather Statement	PHI	Carbon	66 min
Aug 1, 6:14 PM EDT	Special Weather Statement	PHI	Carbon	46 min
Aug 1, 6:53 PM EDT	Special Weather Statement	PHI	Lehigh	22 min
Aug 1, 1:41 PM EDT	Special Weather Statement	PHI	Cecil	94 min
Aug 1, 5:43 PM EDT	Severe Thunderstorm Warning	PHI	Queen Anne's, Talbot	62 min
Aug 1, 6:25 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Queen Anne's, Talbot	53 min
Aug 1, 2:56 PM EDT	Areal Flood Advisory	PHI	Sussex	4 hr
Aug 1, 3:36 PM EDT	Special Weather Statement	PHI	Sussex	84 min
Aug 1, 6:20 PM EDT	Areal Flood Advisory	PHI	Sussex	4 hr

Nearby

Special Weather Statements in Pennsylvania, 2016 Every special weather statement in 2016

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.