Alert archive / Pennsylvania / Special Weather Statements in 2016

Special Weather Statement, NWS Philadelphia/Mount Holly

October 30, 2016Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Oct 30, 2016, 4:11 PM EDT for Bucks County, Pennsylvania. It was in force for 19 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
Oct 30, 2016, 4:11 PM EDT (20:11 UTC)
Expired
Oct 30, 2016, 4:30 PM EDT
In force
19 min
Issued by
NWS Philadelphia/Mount Holly

County Bucks County, PA

The radar

The Philadelphia radar (KDIX), 79 km from the middle of the area, began a volume at 20:13 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, 8.2 hours before the alert went out and 194 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 2016-10-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2016-10-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 61 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1121 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
61 m²/s²
0-3 km storm-relative helicity
74 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

742 
WWUS81 KPHI 302011
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
411 PM EDT SUN OCT 30 2016

NJZ009-PAZ105-106-302030-
HUNTERDON-LOWER BUCKS-UPPER BUCKS-
411 PM EDT SUN OCT 30 2016

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTH CENTRAL HUNTERDON
AND NORTHWESTERN BUCKS COUNTIES...

AT 411 PM EDT...RADAR INDICATED STRONG THUNDERSTORMS WERE LOCATED
ALONG A LINE EXTENDING FROM NEAR QUAKERTOWN TO NEAR PERKASIE.
MOVEMENT WAS EAST AT 50 TO 60 MPH.

WINDS IN EXCESS OF 40 MPH ARE POSSIBLE WITH THESE STORMS.

THESE STORMS WILL BE NEAR...
  BEDMINSTER AROUND 415 PM EDT. 
  TINICUM...DUBLIN...PIPERSVILLE AND OTTSVILLE AROUND 420 PM EDT. 
  BYRAM...LUMBERVILLE AND GARDENVILLE AROUND 425 PM EDT. 
  NEW HOPE...STOCKTON...SAND BROOK AND SERGEANTSVILLE AROUND 430 PM 
  EDT. 

OTHER LOCATIONS IMPACTED BY THESE STORMS INCLUDE TRUMBAUERSVILLE...
LAMBERTVILLE...RICHLANDTOWN AND SELLERSVILLE.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
CAUSE LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

THESE STORMS MAY INTENSIFY...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 4051 7489 4040 7484 4036 7494 4037 7538
      4042 7540 4047 7532
TIME...MOT...LOC 2011Z 266DEG 56KT 4045 7529 4040 7529 4038 7536 

$$

DRAG

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 30, 4:04 AM EDTSmall Craft AdvisoryPHI34 hr
Oct 30, 2:18 PM EDTSpecial Weather StatementPHISussex42 min
Oct 30, 3:55 PM EDTSpecial Weather StatementPHIMorris35 min
Oct 30, 4:29 PM EDTSpecial Weather StatementPHIHunterdon31 min
Oct 30, 4:57 PM EDTSpecial Weather StatementPHIMiddlesex33 min
Oct 30, 5:48 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Gloucester, Mercer, Salem42 min
Oct 30, 5:54 PM EDTSpecial Weather StatementPHISalem51 min
Oct 30, 5:57 PM EDTSpecial Marine WarningPHI63 min
Oct 30, 6:29 PM EDTSpecial Weather StatementPHIAtlantic, Burlington, Camden, Cumberland, Gloucester, Monmouth and 2 more46 min
Oct 30, 7:10 PM EDTSpecial Marine WarningPHI35 min
Oct 30, 7:13 PM EDTSpecial Weather StatementPHIOcean17 min
Oct 30, 7:25 PM EDTSpecial Marine WarningPHI35 min
Oct 30, 7:51 PM EDTSpecial Marine WarningPHI24 min
Oct 30, 2:23 PM EDTSpecial Weather StatementPHICarbon, Monroe22 min
Oct 30, 5:01 PM EDTSpecial Weather StatementPHIChester44 min
Oct 30, 5:20 PM EDTSevere Thunderstorm WarningPHIBerks, Chester25 min
Oct 30, 5:27 PM EDTSpecial Weather StatementPHIPhiladelphia48 min

Nearby

Special Weather Statements in Pennsylvania, 2016Every special weather statement in 2016

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.