Alert archive / Pennsylvania / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

September 6, 2012Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Sep 6, 2012, 9:01 PM EDT for Monroe 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
Sep 6, 2012, 9:01 PM EDT (01:01 UTC)
Expired
Sep 6, 2012, 10:30 PM EDT
In force
89 min
Issued by
NWS Philadelphia/Mount Holly

County Monroe County, PA

The radar

The Binghamton radar (KBGM), 136 km from the middle of the area, began a volume at 01:03 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 00:00Z, 1.0 hours before the alert went out and 198 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 00:00Z on 2012-09-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 479 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 00:00Z on 2012-09-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 square meters per square second.19395878Sfc1 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
479 J/kg
Mixed-layer CIN
-84 J/kg
Mixed-layer LCL
761 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
35 m²/s²
0-3 km storm-relative helicity
63 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

341 
WWUS81 KPHI 070101
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
901 PM EDT THU SEP 6 2012

PAZ055-070230-
MONROE PA-
901 PM EDT THU SEP 6 2012

...A STRONG THUNDERSTORM WILL AFFECT MONROE COUNTY...

AT 859 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 4 MILES SOUTH OF SCRANTON...MOVING EAST AT 25
MPH. THE THUNDERSTORM WILL BE NEAR TOBYHANNA...POCONO PINES AROUND
930 PM...LAKE IN THE CLOUDS...MOUNT POCONO AROUND 945 PM...SKYTOP...
CANADENSIS AROUND 1000 PM...WERRY LAKE AND HIDDEN LAKE AROUND 1015
PM.

VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL POOR DRAINAGE AREAS.

WIND GUSTS TO 50 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.

EXPECT SMALL HAIL AND FREQUENT...DANGEROUS CLOUD TO GROUND LIGHTNING
FROM THIS STORM.

LAT...LON 4123 7512 4115 7514 4115 7508 4110 7504
      4109 7501 4102 7507 4099 7513 4097 7512
      4097 7514 4117 7560 4123 7554 4124 7551
      4126 7513

$$

NIERENBERG

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 6, 8:35 PM EDTSmall Craft Advisory for Hazardous SeasPHI18 hr
Sep 7, 3:03 PM EDTSmall Craft AdvisoryPHI33 hr
Sep 6, 10:31 PM EDTSpecial Weather StatementPHICarbon119 min
Sep 6, 11:12 PM EDTSevere Thunderstorm WarningPHICarbon65 min
Sep 7, 1:57 AM EDTSpecial Weather StatementPHIBerks2 hr
Sep 7, 3:39 AM EDTSevere Thunderstorm WarningPHIBerks81 min

Nearby

Special Weather Statements in Pennsylvania, 2012Every 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.