Alert archive / Pennsylvania / Special Weather Statements in 2022

Special Weather Statement, NWS Philadelphia/Mount Holly

August 9, 2022Lehigh County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 9, 2022, 4:02 PM EDT for Lehigh County, Pennsylvania. It was in force for 28 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 9, 2022, 4:02 PM EDT (20:02 UTC)
Expired
Aug 9, 2022, 4:30 PM EDT
In force
28 min
Issued by
NWS Philadelphia/Mount Holly
Hail
0.00 in
Wind
40

County Lehigh County, PA

The radar

The Philadelphia radar (KDIX), 131 km from the middle of the area, began a volume at 20:02 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

Brookhaven, NY (KOKX), launched 12:00Z, 8.0 hours before the alert went out and 233 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 2022-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 449 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 2022-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 106 square meters per square second.1939Sfc1 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
449 J/kg
Mixed-layer CIN
-86 J/kg
Mixed-layer LCL
1077 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
106 m²/s²
0-3 km storm-relative helicity
93 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

310 
WWUS81 KPHI 092002
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
402 PM EDT Tue Aug 9 2022
 
PAZ061-092030-
Lehigh PA-
402 PM EDT Tue Aug 9 2022

...A strong thunderstorm will impact portions of central Lehigh
County through 430 PM EDT...

At 402 PM EDT, Doppler radar was tracking a strong thunderstorm over
New Tripoli, or 12 miles south of Lehighton, moving east at 15 mph.

HAZARD...Wind gusts up to 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects.

Locations impacted include...
Allentown, Northampton, Jordan Valley, Ancient Oaks, Neffs,
Schnecksville, Coffeetown, New Tripoli, Claussville, Coplay, Macungie
and Alburtis.

This includes the following highways...
 Northeast Extension between mile markers 55 and 67.
 Interstate 78 in Pennsylvania between mile markers 46 and 55.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

&&

LAT...LON 4072 7576 4073 7557 4072 7555 4074 7554
      4074 7553 4068 7550 4050 7557 4062 7580
TIME...MOT...LOC 2002Z 286DEG 13KT 4065 7573 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

$$

Staarmann

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 10:04 AM EDTExcessive Heat WarningPHIBurlington, Camden, Gloucester, Mercer, Middlesex, Monmouth and 2 more10 hr
Aug 9, 5:00 PM EDTSpecial Weather StatementPHIMiddlesex30 min
Aug 9, 6:25 PM EDTSpecial Weather StatementPHIGloucester35 min
Aug 9, 7:08 PM EDTSpecial Weather StatementPHIBurlington37 min
Aug 9, 3:02 PM EDTSpecial Weather StatementPHIBerks28 min
Aug 9, 4:18 PM EDTSpecial Weather StatementPHIMontgomery27 min
Aug 9, 4:32 PM EDTSpecial Weather StatementPHILehigh28 min
Aug 9, 4:36 PM EDTSpecial Weather StatementPHIChester24 min
Aug 9, 4:55 PM EDTSpecial Weather StatementPHIBerks35 min
Aug 9, 5:18 PM EDTSpecial Weather StatementPHIBerks27 min
Aug 9, 6:03 PM EDTSpecial Weather StatementPHIDelaware27 min

Nearby

Special Weather Statements in Pennsylvania, 2022Every special weather statement in 2022

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.