Alert archive / Pennsylvania / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

June 1, 2012Berks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Jun 1, 2012, 10:01 PM EDT for Berks County, Pennsylvania. It was in force for 89 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: Jun 1, 2012, 10:01 PM EDT (02:01 UTC)
Expired: Jun 1, 2012, 11:30 PM EDT
In force: 89 min
Issued by: NWS Philadelphia/Mount Holly

County Berks County, PA

The radar

The Philadelphia radar (KDIX), 153 km from the middle of the area, began a volume at 02:01 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

Washington/Dulle, VA (KIAD), launched 00:00Z, 2.0 hours before the alert went out and 206 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: 497 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 621 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 289 m²/s²
0-3 km storm-relative helicity: 334 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 6.1

Open this sounding in Storm Lab

The text

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

236 
WWUS81 KPHI 020201
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1001 PM EDT FRI JUN 1 2012

PAZ060-020330-
BERKS PA-
1001 PM EDT FRI JUN 1 2012

...A STRONG THUNDERSTORM WILL AFFECT BERKS COUNTY...

AT 957 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 20 MILES NORTHWEST OF LANCASTER...MOVING EAST AT
25 MPH. THE THUNDERSTORM WILL BE NEAR WOMELSDORF...BERNVILLE AROUND
1045 PM...CENTERPORT...WHITFIELD AROUND 1100 PM...LEESPORT...
FLEETWOOD AROUND 1115 PM...LYONS AND KUTZTOWN AROUND 1130 PM.

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

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM.

LAT...LON 4052 7635 4052 7624 4058 7606 4058 7602
      4065 7599 4068 7589 4061 7579 4036 7560
      4029 7565 4021 7599 4036 7621 4046 7639
      4050 7643

$$

HEAVENER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 1, 10:25 PM EDT	Special Marine Warning	PHI		65 min
Jun 1, 10:41 PM EDT	Special Marine Warning	PHI		64 min
Jun 1, 11:42 PM EDT	Special Marine Warning	PHI		63 min
Jun 2, 12:16 AM EDT	Special Weather Statement	PHI	Atlantic, Ocean	59 min
Jun 2, 1:12 AM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	3 hr
Jun 2, 11:28 AM EDT	Coastal Flood Advisory	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 4 more	15 hr
Jun 1, 8:46 PM EDT	Areal Flood Advisory	PHI	Chester, Delaware, Montgomery, Philadelphia	5 hr
Jun 1, 8:58 PM EDT	Special Weather Statement	PHI	Berks, Bucks, Lehigh, Montgomery, Northampton	62 min
Jun 1, 9:03 PM EDT	Tornado Warning	PHI	Bucks, Montgomery	27 min
Jun 1, 11:04 PM EDT	Flash Flood Warning	PHI	Berks, Lehigh, Montgomery	4 hr
Jun 2, 12:26 AM EDT	Areal Flood Advisory	PHI	Berks, Montgomery	85 min
Jun 2, 2:45 AM EDT	Areal Flood Warning	PHI	Montgomery	6 hr
Jun 1, 9:41 PM EDT	Special Weather Statement	PHI	Sussex	64 min
Jun 1, 10:10 PM EDT	Severe Thunderstorm Warning	PHI	New Castle	65 min
Jun 1, 8:07 PM EDT	Severe Thunderstorm Warning	PHI	Queen Anne's	41 min
Jun 1, 8:30 PM EDT	Severe Thunderstorm Warning	PHI	Cecil, Kent, Queen Anne's	60 min
Jun 1, 9:09 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Queen Anne's, Talbot	66 min
Jun 1, 10:14 PM EDT	Special Weather Statement	PHI	Caroline	61 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.