Alert archive / Pennsylvania / Special Weather Statements in 2016

Special Weather Statement, NWS Philadelphia/Mount Holly

August 6, 2016Lehigh County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 6, 2016, 4:55 PM EDT for Lehigh County, Pennsylvania. It was in force for 35 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 6, 2016, 4:55 PM EDT (20:55 UTC)
Expired
Aug 6, 2016, 5:30 PM EDT
In force
35 min
Issued by
NWS Philadelphia/Mount Holly

County Lehigh County, PA

The radar

The Philadelphia radar (KDIX), 103 km from the middle of the area, began a volume at 20:55 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.

What was reported inside it

TimeReportWhereRemark
Aug 6, 5:06 PM EDTHAIL 0.25Salisbury Twp, PA

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.9 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-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2016-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 252 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2016-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 124 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
252 J/kg
Mixed-layer CIN
-55 J/kg
Mixed-layer LCL
685 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
124 m²/s²
0-3 km storm-relative helicity
134 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted.

181 
WWUS81 KPHI 062055
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
455 PM EDT SAT AUG 6 2016
 
NJZ007-009-PAZ061-062-105-062130-
HUNTERDON-WARREN-NORTHAMPTON-LEHIGH-UPPER BUCKS-
455 PM EDT SAT AUG 6 2016

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTHWESTERN WARREN...
WEST CENTRAL HUNTERDON...SOUTHWESTERN NORTHAMPTON...LEHIGH AND
NORTHWESTERN BUCKS COUNTIES...

AT 455 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS ALONG A LINE
EXTENDING FROM BETHLEHEM TO NEAR CLAUSSVILLE...AND MOVING SOUTHEAST
AT 20 MPH.

WIND GUSTS UP TO 40 MPH AND HALF INCH HAIL ARE POSSIBLE WITH THESE
STORMS.

LOCATIONS IMPACTED INCLUDE...
ALLENTOWN...EASTON...BETHLEHEM...EMMAUS...NORTHAMPTON...HELLERTOWN...
FERNDALE...FRENCHTOWN...MILFORD...RIEGELSVILLE...STEUBEN...GLENDON...
PLEASANT VALLEY...NEW TRIPOLI...SPRINGTOWN...ZIONSVILLE...
CLAUSSVILLE...SCHNECKSVILLE...REVERE AND LEHIGH UNIVERSITY.

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 4052 7484 4047 7556 4067 7586 4072 7539
TIME...MOT...LOC 2055Z 296DEG 19KT 4064 7537 4062 7574 
$$

SFJ

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 2:24 PM EDTSpecial Weather StatementPHISussex36 min
Aug 6, 2:50 PM EDTSpecial Weather StatementPHIMorris, Sussex, Warren40 min
Aug 6, 3:21 PM EDTSpecial Weather StatementPHIHunterdon, Morris, Somerset39 min
Aug 6, 3:55 PM EDTSpecial Weather StatementPHIHunterdon, Middlesex, Morris, Somerset50 min
Aug 6, 4:40 PM EDTSpecial Weather StatementPHIMiddlesex, Monmouth50 min
Aug 6, 5:40 PM EDTSpecial Weather StatementPHIMercer50 min
Aug 6, 5:41 PM EDTSpecial Weather StatementPHIMonmouth49 min
Aug 6, 6:32 PM EDTAreal Flood AdvisoryPHIBurlington, Camden, Gloucester4 hr
Aug 6, 6:52 PM EDTSpecial Weather StatementPHIMercer23 min
Aug 6, 7:10 PM EDTSpecial Weather StatementPHIOcean50 min
Aug 6, 7:33 PM EDTSpecial Marine WarningPHI57 min
Aug 6, 7:40 PM EDTSpecial Weather StatementPHIOcean35 min
Aug 6, 4:26 PM EDTSpecial Weather StatementPHILehigh34 min
Aug 6, 4:30 PM EDTSpecial Weather StatementPHIBerks30 min
Aug 6, 4:51 PM EDTSpecial Weather StatementPHIMontgomery24 min
Aug 6, 4:59 PM EDTSevere Thunderstorm WarningPHIBucks, Lehigh, Northampton46 min
Aug 6, 5:26 PM EDTSpecial Weather StatementPHIBerks34 min
Aug 6, 5:56 PM EDTSpecial Weather StatementPHIMontgomery34 min
Aug 6, 6:25 PM EDTSpecial Weather StatementPHIDelaware, Montgomery, Philadelphia35 min
Aug 6, 6:49 PM EDTSpecial Weather StatementPHIKent26 min

Nearby

Special Weather Statements in Pennsylvania, 2016Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.