Alert archive / Pennsylvania / Special Weather Statements in 2021

Special Weather Statement, NWS Philadelphia/Mount Holly

October 16, 2021Berks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Oct 16, 2021, 1:39 PM EDT for Berks County, Pennsylvania. It was in force for 51 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: Oct 16, 2021, 1:39 PM EDT (17:39 UTC)
Expired: Oct 16, 2021, 2:30 PM EDT
In force: 51 min
Issued by: NWS Philadelphia/Mount Holly
Hail: 0.00 in
Wind: 40

County Berks County, PA

The radar

The Philadelphia radar (KDIX), 147 km from the middle of the area, began a volume at 17:39 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
Oct 16, 2:14 PM EDT	TSTM WND GST 49	Reading Regional Airpor, PA

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

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 5.7 hours before the alert went out and 210 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1259 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 141 m²/s²
0-3 km storm-relative helicity: 192 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

338 
WWUS81 KPHI 161739
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
139 PM EDT Sat Oct 16 2021
 
PAZ060-061-161830-
Lehigh PA-Berks PA-
139 PM EDT Sat Oct 16 2021

...A line of showers with gusty winds will impact portions of Berks 
and northwestern Lehigh Counties through 230 PM EDT...

At 137 PM EDT, Doppler radar was tracking a line of showers with 
strong, gusty winds along a line extending from near Pine Grove to 
East Petersburg. Movement was northeast at 45 mph.

HAZARD...Wind gusts up to 45 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Reading, Wyomissing, Birdsboro, Kutztown, Hamburg, Fleetwood, Sinking
Spring, Laureldale, Womelsdorf, Wernersville, Topton, Robesonia,
Leesport, Shoemakersville, Bernville, Bechtelsville, Lyons,
Strausstown, Lenhartsville and New Morgan.

This includes the following highways...
 Pennsylvania Turnpike between mile markers 296 and 298.
 Interstate 78 in Pennsylvania between mile markers 10 and 48.
 Interstate 176 in Pennsylvania between mile markers 1 and 11.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

These showers may intensify with lightning possible, so be certain 
to monitor local radio stations and available television stations 
for additional information and possible warnings from the National 
Weather Service.

&&

LAT...LON 4052 7634 4052 7625 4056 7609 4058 7606
      4057 7602 4065 7598 4070 7583 4073 7576
      4069 7570 4037 7559 4023 7571 4018 7580
      4015 7589 4049 7643
TIME...MOT...LOC 1737Z 231DEG 45KT 4055 7633 4011 7633 

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

$$

Fitzsimmons

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 16, 10:35 AM EDT	Coastal Flood Statement	PHI	Ocean	2 hr
Oct 16, 3:22 PM EDT	Special Marine Warning	PHI		113 min
Oct 16, 3:31 PM EDT	Severe Thunderstorm Warning	PHI	Salem	18 min
Oct 16, 3:41 PM EDT	Special Weather Statement	PHI	Hunterdon, Sussex, Warren	49 min
Oct 16, 4:02 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Middlesex, Morris, Somerset	43 min
Oct 16, 4:18 PM EDT	Special Weather Statement	PHI	Atlantic, Burlington, Camden, Cumberland, Gloucester, Mercer and 1 more	57 min
Oct 16, 5:10 PM EDT	Special Marine Warning	PHI		95 min
Oct 16, 5:29 PM EDT	Special Marine Warning	PHI		91 min
Oct 16, 6:09 PM EDT	Special Marine Warning	PHI		66 min
Oct 16, 6:52 PM EDT	Coastal Flood Statement	PHI	Ocean	4 hr
Oct 16, 2:32 PM EDT	Special Weather Statement	PHI	Berks, Lehigh	58 min
Oct 16, 2:44 PM EDT	Special Weather Statement	PHI	Chester	61 min
Oct 16, 3:40 PM EDT	Special Weather Statement	PHI	New Castle	50 min

Nearby

Special Weather Statements in Pennsylvania, 2021 Every special weather statement in 2021

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.