Alert archive / Pennsylvania / Special Weather Statements in 2016

Special Weather Statement, NWS Philadelphia/Mount Holly

July 9, 2016Warren County, New Jersey; Berks County, Lehigh County, Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 9, 2016, 7:33 PM EDT for Warren County, New Jersey; Berks County, Lehigh County, Northampton County, Pennsylvania. It was in force for 57 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: Jul 9, 2016, 7:33 PM EDT (23:33 UTC)
Expired: Jul 9, 2016, 8:30 PM EDT
In force: 57 min
Issued by: NWS Philadelphia/Mount Holly

Counties Warren County, NJ, Berks County, PA, Lehigh County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 122 km from the middle of the area, began a volume at 23:36 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

Time	Report	Where	Remark
Jul 9, 8:12 PM EDT	TSTM WND GST 52	S Allentown, 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, 11.6 hours before the alert went out and 225 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: 2 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 515 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 103 m²/s²
0-3 km storm-relative helicity: 107 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

109 
WWUS81 KPHI 092333
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
733 PM EDT SAT JUL 9 2016
 
NJZ007-008-PAZ054-055-060>062-100030-
MORRIS-WARREN-CARBON-MONROE-BERKS-NORTHAMPTON-LEHIGH-
733 PM EDT SAT JUL 9 2016

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTHERN
WARREN...WESTERN MORRIS...NORTHAMPTON...LEHIGH...SOUTH
CENTRAL MONROE...CENTRAL BERKS AND SOUTHEASTERN CARBON COUNTIES...

AT 731 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS ALONG A LINE
EXTENDING FROM PALMERTON TO BERNVILLE...AND MOVING EAST AT 30 MPH.

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

LOCATIONS IMPACTED INCLUDE...
ALLENTOWN...EASTON...BETHLEHEM...FORKS...EMMAUS...NORTHAMPTON...
HACKETTSTOWN...WILSON...WASHINGTON...HELLERTOWN...NAZARETH...
PALMERTON...BANGOR...KUTZTOWN...HAMBURG...SLATINGTON...FLEETWOOD...
LAURELDALE...PEN ARGYL AND WIND GAP.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
CAUSE LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT 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.

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 4069 7586 4073 7577 4075 7578 4087 7562
      4090 7479 4082 7485 4072 7498 4056 7532
      4044 7548 4046 7554 4034 7563 4040 7624
TIME...MOT...LOC 2331Z 272DEG 27KT 4083 7561 4045 7610 
$$

MEOLA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 8:12 PM EDT	Flash Flood Warning	PHI	Atlantic, Burlington	4 hr
Jul 9, 3:55 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	50 min
Jul 9, 4:08 PM EDT	Special Marine Warning	PHI		67 min
Jul 9, 4:15 PM EDT	Areal Flood Advisory	PHI	Gloucester, Salem	4 hr
Jul 9, 4:47 PM EDT	Special Weather Statement	PHI	Salem	43 min
Jul 9, 6:11 PM EDT	Special Weather Statement	PHI	Salem	34 min
Jul 9, 6:31 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cumberland, Salem	44 min
Jul 9, 6:33 PM EDT	Special Marine Warning	PHI		57 min
Jul 9, 6:43 PM EDT	Areal Flood Advisory	PHI	Cumberland, Salem	4 hr
Jul 9, 7:07 PM EDT	Special Marine Warning	PHI		53 min
Jul 9, 7:07 PM EDT	Severe Thunderstorm Warning	PHI	Cape May, Cumberland	33 min
Jul 9, 12:35 PM EDT	Special Weather Statement	PHI	Berks	25 min
Jul 9, 12:59 PM EDT	Special Weather Statement	PHI	Berks	31 min
Jul 9, 1:27 PM EDT	Special Weather Statement	PHI	Berks	48 min
Jul 9, 2:40 PM EDT	Special Weather Statement	PHI	Chester	50 min
Jul 9, 3:17 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	43 min
Jul 9, 4:48 PM EDT	Special Weather Statement	PHI	Caroline, Talbot	57 min
Jul 9, 5:00 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Queen Anne's, Talbot	30 min
Jul 9, 2:38 PM EDT	Special Weather Statement	PHI	Sussex	22 min
Jul 9, 3:13 PM EDT	Special Weather Statement	PHI	Sussex	62 min
Jul 9, 4:11 PM EDT	Special Weather Statement	PHI	New Castle	34 min
Jul 9, 5:31 PM EDT	Special Weather Statement	PHI	New Castle	29 min

Nearby

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