Alert archive / Pennsylvania / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

May 26, 2012Berks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at May 26, 2012, 6:02 PM EDT for Berks County, Pennsylvania. It was in force for 43 min. 3 reports 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: May 26, 2012, 6:02 PM EDT (22:02 UTC)
Expired: May 26, 2012, 6:45 PM EDT
In force: 43 min
Issued by: NWS Philadelphia/Mount Holly

County Berks County, PA

The radar

The Philadelphia radar (KDIX), 109 km from the middle of the area, began a volume at 22:05 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
May 26, 6:32 PM EDT	TSTM WND GST 50	Reading, PA
May 26, 6:32 PM EDT	TSTM WND GST 50	Wyomissing, PA	AN ESTIMATED 50 MPH THUNDERSTORM WIND GUST WAS REPORTED IN WYOMISSING.
May 26, 6:32 PM EDT	HAIL 0.75	Wyomissing, PA	PEA TO PENNY SIZE HAIL REPORTED IN WYOMISSING.

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, 10.0 hours before the alert went out and 221 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: 225 J/kg
Mixed-layer CIN: -140 J/kg
Mixed-layer LCL: 809 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 75 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

038 
WWUS81 KPHI 262202
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
602 PM EDT SAT MAY 26 2012

PAZ060-061-067>069-262245-
BERKS PA-BUCKS PA-CHESTER PA-LEHIGH PA-MONTGOMERY PA-
602 PM EDT SAT MAY 26 2012

...STRONG THUNDERSTORMS WILL AFFECT PORTIONS OF 
BERKS...BUCKS...CHESTER...LEHIGH AND MONTGOMERY COUNTIES...

AT 600 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM SOUTHERN LEHIGH 
COUNTY TO CENTRAL BERKS COUNTY. THESE STORMS WERE MOVING SOUTHEAST 
AT 20 MPH.

VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS.

WIND GUSTS UP TO 40 MPH AND PEA SIZE HAIL ARE POSSIBLE.

CLOUD TO GROUND LIGHTNING IS OCCURRING. DO NOT SEEK SHELTER UNDER 
TREES WHEN LIGHTNING THREATENS, MOVE INDOORS.

LAT...LON 4039 7517 4018 7546 4012 7584 4043 7609
      4043 7590 4058 7542

$$

FORECASTER: GORSE

The office that day

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

Issued	Product	Office	Counties	Lasted
May 26, 1:39 PM EDT	Special Weather Statement	PHI	Warren	51 min
May 26, 1:42 PM EDT	Special Weather Statement	PHI	Sussex	63 min
May 26, 2:02 PM EDT	Severe Thunderstorm Warning	PHI	Warren	58 min
May 26, 2:18 PM EDT	Areal Flood Advisory	PHI	Sussex, Warren	5 hr
May 26, 2:28 PM EDT	Special Weather Statement	PHI	Sussex	62 min
May 26, 2:36 PM EDT	Flash Flood Warning	PHI	Warren	5 hr
May 26, 2:42 PM EDT	Severe Thunderstorm Warning	PHI	Warren	48 min
May 26, 3:40 PM EDT	Excessive Heat Watch	PHI	Burlington, Camden, Gloucester, Mercer	23 hr
May 26, 5:26 PM EDT	Special Weather Statement	PHI	Hunterdon	49 min
May 26, 5:36 PM EDT	Areal Flood Advisory	PHI	Warren	114 min
May 26, 6:10 PM EDT	Areal Flood Advisory	PHI	Hunterdon	111 min
May 26, 7:18 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Mercer, Middlesex, Monmouth, Somerset	60 min
May 26, 7:30 PM EDT	Special Weather Statement	PHI	Middlesex	45 min
May 26, 2:23 PM EDT	Areal Flood Advisory	PHI	Carbon	3 hr
May 26, 2:46 PM EDT	Special Weather Statement	PHI	Carbon	44 min
May 26, 3:15 PM EDT	Areal Flood Advisory	PHI	Carbon	2 hr
May 26, 3:32 PM EDT	Flash Flood Warning	PHI	Monroe, Northampton	4 hr
May 26, 3:39 PM EDT	Special Weather Statement	PHI	Monroe	51 min
May 26, 3:45 PM EDT	Areal Flood Advisory	PHI	Carbon	3 hr
May 26, 3:48 PM EDT	Areal Flood Advisory	PHI	Monroe	3 hr
May 26, 3:51 PM EDT	Special Weather Statement	PHI	Carbon	39 min
May 26, 3:54 PM EDT	Flash Flood Warning	PHI	Carbon	4 hr
May 26, 4:31 PM EDT	Areal Flood Advisory	PHI	Carbon, Monroe, Northampton	3 hr
May 26, 4:37 PM EDT	Special Weather Statement	PHI	Carbon, Monroe	38 min
May 26, 4:54 PM EDT	Special Weather Statement	PHI	Northampton	51 min
May 26, 5:33 PM EDT	Flash Flood Warning	PHI	Monroe	114 min
May 26, 6:26 PM EDT	Special Weather Statement	PHI	Berks	49 min
May 26, 7:20 PM EDT	Areal Flood Advisory	PHI	Berks, Chester	59 min

Nearby

Special Weather Statements in Pennsylvania, 2012 Every special weather statement in 2012

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.