Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 93, NWS Philadelphia/Mount Holly

July 7, 2014Carbon County, Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 7, 2014, 9:42 PM EDT for Carbon County, Monroe County, Pennsylvania. It was in force for 63 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
Jul 7, 2014, 9:42 PM EDT (01:42 UTC)
Expired
Jul 7, 2014, 10:45 PM EDT
In force
63 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Carbon County, PA, Monroe County, PA

The radar

The Binghamton radar (KBGM), 130 km from the middle of the area, began a volume at 01:42 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, 1.7 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-pSkew-T log-p diagram, Brookhaven, NY at 00:00Z on 2014-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 303 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 2014-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 112 square meters per square second.193958Sfc1 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
303 J/kg
Mixed-layer CIN
-162 J/kg
Mixed-layer LCL
1475 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
112 m²/s²
0-3 km storm-relative helicity
184 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

497 
WUUS51 KPHI 080142
SVRPHI
PAC025-089-080245-
/O.NEW.KPHI.SV.W.0093.140708T0142Z-140708T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
942 PM EDT MON JUL 7 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MONROE COUNTY IN NORTHEAST PENNSYLVANIA...
  CARBON COUNTY IN NORTHEAST PENNSYLVANIA...

* UNTIL 1045 PM EDT

* AT 940 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF DEVELOPING SEVERE THUNDERSTORMS. THESE SEVERE STORMS 
  EXTENDED FROM ARROWHEAD LAKE TO WHITE HAVEN TO MAHANOY CITY...
  MOVING EAST AT 40 MPH. THESE STORMS ARE CAPABLE OF PRODUCING 
  DAMAGING WINDS OF AROUND 60 MPH. 

* SEVERE THUNDERSTORMS WILL BE NEAR...
  LAKE HARMONY AND GOULSBORO STATE PARK AROUND 950 PM EDT...
  TOBYHANNA AND ALBRIGHTSVILLE AROUND 955 PM EDT...
  NESQUEHONING AND TOBYHANNA AROUND 1000 PM EDT...
  MOUNT POCONO AND LONG POND AROUND 1005 PM EDT...
  JIM THORPE AND SKYTOP AROUND 1010 PM EDT...
  PARADISE VALLEY AND MOUNTAINHOME AROUND 1015 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS LINE OF
SEVERE THUNDERSTORMS. WHEN THUNDER ROARS...MOVE INDOORS! REMEMBER...
IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY
LIGHTNING.

&&

LAT...LON 4124 7512 4116 7515 4114 7508 4111 7505
      4090 7529 4082 7589 4091 7600 4100 7575
      4102 7574 4105 7578 4110 7574 4114 7569
      4113 7564 4123 7554 4126 7513
TIME...MOT...LOC 0142Z 254DEG 35KT 4123 7555 4102 7569
          4084 7608

$$

TFG
1 follow-up statement
869 
WWUS51 KPHI 080216
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1016 PM EDT MON JUL 7 2014

PAC025-089-080245-
/O.CON.KPHI.SV.W.0093.000000T0000Z-140708T0245Z/
MONROE PA-CARBON PA-
1016 PM EDT MON JUL 7 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT
FOR CARBON AND MONROE COUNTIES...

AT 1013 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS TO AROUND 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 7 MILES NORTHEAST OF SKYTOP TO PARADISE VALLEY TO
CHRISTMANS...OR ALONG A LINE EXTENDING FROM BLOOMING GROVE TO MOUNT
POCONO TO 7 MILES NORTH OF LEHIGHTON...MOVING EAST AT 40 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  TRACHSVILLE...SUN VALLEY...SCOTRUN AND PENN FOREST RESERVOIR BY
  1025 PM EDT...
  MERWINSBURG AND GILBERT BY 1030 PM EDT...
  BRODHEADSVILLE...TANNERSVILLE...REEDERS AND MCMICHAEL BY 1035 PM
  EDT...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.

IN ADDITION TO DAMAGING WINDS...FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.

LAT...LON 4124 7512 4116 7515 4114 7508 4111 7505
      4090 7529 4082 7589 4092 7581 4108 7551
      4124 7534 4126 7513
TIME...MOT...LOC 0216Z 254DEG 35KT 4132 7513 4111 7527
          4093 7566

$$

TFG

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 10:04 PM EDTAreal Flood AdvisoryPHICarbon, Monroe3 hr
Jul 7, 10:45 PM EDTSpecial Weather StatementPHINorthampton60 min
Jul 8, 3:51 PM EDTSevere Thunderstorm WarningPHIBucks, Montgomery24 min
Jul 8, 4:12 PM EDTSevere Thunderstorm WarningPHIBucks33 min
Jul 8, 7:08 PM EDTSevere Thunderstorm WarningPHIBerks, Chester82 min
Jul 8, 7:19 PM EDTSevere Thunderstorm WarningPHICarbon116 min
Jul 8, 7:48 PM EDTSevere Thunderstorm WarningPHIMonroe106 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2014Every severe thunderstorm warning in 2014

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.