Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 101, NWS Philadelphia/Mount Holly

July 8, 2014Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 8, 2014, 7:48 PM EDT for Monroe County, Pennsylvania. It was in force for 106 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 8, 2014, 7:48 PM EDT (23:48 UTC)
Expired: Jul 8, 2014, 9:34 PM EDT
In force: 106 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

County Monroe County, PA

The radar

The Philadelphia radar (KDIX), 141 km from the middle of the area, began a volume at 23:48 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 8, 5:05 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 11.8 hours before the alert went out and 189 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: 132 J/kg
Mixed-layer CIN: -176 J/kg
Mixed-layer LCL: 1646 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 77 m²/s²
0-3 km storm-relative helicity: 123 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.

387 
WUUS51 KPHI 082348
SVRPHI
PAC089-090145-
/O.NEW.KPHI.SV.W.0101.140708T2348Z-140709T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
748 PM EDT TUE JUL 8 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

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

* UNTIL 945 PM EDT

* AT 748 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM. THE STORM WAS NEAR HOMETOWN...MOVING NORTHEAST
  AT 30 MPH. THIS STORM IS CAPABLE OF PRODUCING QUARTER SIZE HAIL...
  AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. 

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  KRESGEVILLE AND KUNKLETOWN AROUND 850 PM EDT...
  BLAKESLEE AROUND 855 PM EDT...
  POCONO RACEWAY AND SUN VALLEY AROUND 900 PM EDT...
  LONG POND AROUND 905 PM EDT...
  MCMICHAEL AND POCONO PINES AROUND 910 PM EDT...
  REEDERS AND GOULSBORO STATE PARK AROUND 915 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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
TUESDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY
AND EASTERN PENNSYLVANIA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN
EFFECT UNTIL MIDNIGHT EDT WEDNESDAY MORNING FOR NORTHEAST NEW JERSEY.

&&

LAT...LON 4115 7516 4114 7508 4108 7503 4109 7496
      4104 7503 4099 7513 4097 7512 4095 7515
      4093 7521 4086 7529 4081 7547 4095 7557
      4099 7550 4113 7565 4123 7554 4125 7513
TIME...MOT...LOC 2347Z 242DEG 23KT 4081 7604

$$

FORECASTER:JJM

1 follow-up statement

835 
WWUS51 KPHI 090134
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
934 PM EDT TUE JUL 8 2014

PAC089-090144-
/O.CAN.KPHI.SV.W.0101.000000T0000Z-140709T0145Z/
MONROE PA-
934 PM EDT TUE JUL 8 2014

...THE SEVERE THUNDERSTORM WARNING FOR MONROE COUNTY IS CANCELLED...

SEVERE STORMS HAVE MOVED OUT OF THE COUNTY. THE WARNING IS CANCELLED.

LAT...LON 4115 7516 4114 7508 4108 7503 4109 7496
      4104 7503 4099 7513 4097 7512 4095 7515
      4093 7521 4086 7529 4081 7547 4095 7557
      4099 7550 4113 7565 4123 7554 4125 7513
TIME...MOT...LOC 0134Z 242DEG 23KT 4113 7524

$$

JJM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 9:42 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	63 min
Jul 7, 10:04 PM EDT	Areal Flood Advisory	PHI	Carbon, Monroe	3 hr
Jul 7, 10:45 PM EDT	Special Weather Statement	PHI	Northampton	60 min
Jul 8, 3:51 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery	24 min
Jul 8, 4:12 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	33 min
Jul 8, 7:08 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester	82 min
Jul 8, 7:19 PM EDT	Severe Thunderstorm Warning	PHI	Carbon	116 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2014 Every 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.