Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 99, NWS Philadelphia/Mount Holly

September 2, 2013Carbon County, Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 2, 2013, 5:34 AM EDT for Carbon County, Monroe County, Pennsylvania. It was in force for 56 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 2, 2013, 5:34 AM EDT (09:34 UTC)
Expired: Sep 2, 2013, 6:30 AM EDT
In force: 56 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Carbon County, PA, Monroe County, PA

The radar

The Binghamton radar (KBGM), 136 km from the middle of the area, began a volume at 09:37 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, 9.6 hours before the alert went out and 201 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: 1232 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 593 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: -31 m²/s²
0-3 km storm-relative helicity: -19 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

350 
WUUS51 KPHI 020934
SVRPHI
PAC025-089-021030-
/O.NEW.KPHI.SV.W.0099.130902T0934Z-130902T1030Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
534 AM EDT MON SEP 2 2013

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

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

* UNTIL 630 AM EDT

* AT 532 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM. THE STORM WAS NEAR JONAS...MOVING NORTHEAST AT
  25 MPH. THIS STORM IS CAPABLE OF PRODUCING ONE INCH DIAMETER HAIL. 

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  SUN VALLEY AND BRODHEADSVILLE AROUND 540 AM EDT...
  POCONO RACEWAY AROUND 545 AM EDT...
  MCMICHAEL AND LONG POND AROUND 550 AM EDT...
  REEDERS AROUND 555 AM EDT...
  TANNERSVILLE AND STORMVILLE AROUND 600 AM EDT...
  SCOTRUN AND MOUNT POCONO AROUND 605 AM EDT...

LAT...LON 4118 7514 4116 7515 4115 7510 4106 7501
      4081 7549 4098 7561 4126 7525 4125 7521
TIME...MOT...LOC 0933Z 230DEG 22KT 4094 7550

$$

FORECASTER: AMC

2 follow-up statements

914 
WWUS51 KPHI 020949
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
549 AM EDT MON SEP 2 2013

PAC025-020958-
/O.CAN.KPHI.SV.W.0099.000000T0000Z-130902T1030Z/
CARBON PA-
549 AM EDT MON SEP 2 2013

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL CARBON COUNTY IS
CANCELLED...

THE STORM THAT PROMPTED THE SEVERE THUNDERSTORM WARNING HAS MOVED OUT
OF THE AREA...THEREFORE THE SEVERE THUNDERSTORM WARNING HAS BEEN
CANCELLED.

LAT...LON 4125 7521 4118 7514 4116 7515 4115 7510
      4106 7501 4084 7544 4096 7555 4099 7550
      4100 7551 4126 7525
TIME...MOT...LOC 0948Z 230DEG 22KT 4100 7541

$$

PAC089-021030-
/O.CON.KPHI.SV.W.0099.000000T0000Z-130902T1030Z/
MONROE PA-
549 AM EDT MON SEP 2 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 AM EDT
FOR MONROE COUNTY...

AT 545 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING ONE INCH DIAMETER
HAIL. THIS STORM WAS LOCATED NEAR MCMICHAEL...OR 18 MILES SOUTH OF
GOULDSBORO...MOVING NORTHEAST AT 25 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
REEDERS AROUND 555 AM EDT...
TANNERSVILLE AND BARTONSVILLE AROUND 600 AM EDT...
SCOTRUN AND MOUNT POCONO AROUND 605 AM EDT...
ANALOMINK AND EAST STROUDSBURG AROUND 610 AM EDT...
ALPINE MOUNTAIN AND HERNYVILLE AROUND 615 AM EDT...
MOUNTAINHOME AND MARSHALLS CREEK AROUND 620 AM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND 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 4125 7521 4118 7514 4116 7515 4115 7510
      4106 7501 4084 7544 4096 7555 4099 7550
      4100 7551 4126 7525
TIME...MOT...LOC 0948Z 230DEG 22KT 4100 7541

$$

FORECASTER: AMC

836 
WWUS51 KPHI 021004
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
604 AM EDT MON SEP 2 2013

PAC089-021014-
/O.CAN.KPHI.SV.W.0099.000000T0000Z-130902T1030Z/
MONROE PA-
604 AM EDT MON SEP 2 2013

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

THE STORM HAS WEAKENED TO BELOW SEVERE LIMITS...THEREFORE THE SEVERE
THUNDERSTORM WARNING HAS BEEN CANCELLED.

LAT...LON 4125 7521 4118 7514 4116 7515 4115 7510
      4106 7501 4084 7544 4096 7555 4099 7550
      4100 7551 4126 7525
TIME...MOT...LOC 1004Z 230DEG 22KT 4106 7531

$$

FORECASTER: AMC

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 2, 4:56 AM EDT	Special Weather Statement	PHI	Carbon	49 min
Sep 2, 7:09 AM EDT	Areal Flood Advisory	PHI	Northampton	4 hr
Sep 2, 9:37 AM EDT	Areal Flood Advisory	PHI	Philadelphia	113 min
Sep 2, 9:52 AM EDT	Flash Flood Warning	PHI	Philadelphia	4 hr
Sep 2, 10:29 AM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery, Philadelphia	76 min
Sep 2, 10:50 AM EDT	Areal Flood Advisory	PHI	Delaware	3 hr
Sep 2, 11:27 AM EDT	Areal Flood Advisory	PHI	Delaware, Montgomery, Philadelphia	3 hr
Sep 2, 12:37 PM EDT	Flash Flood Warning	PHI	Delaware	3 hr
Sep 2, 12:44 PM EDT	Flash Flood Warning	PHI	Bucks	4 hr
Sep 2, 3:06 PM EDT	Areal Flood Advisory	PHI	Carbon, Monroe	114 min
Sep 2, 3:14 PM EDT	Special Weather Statement	PHI	Northampton	61 min
Sep 2, 4:02 PM EDT	Special Weather Statement	PHI	Lehigh, Northampton	43 min
Sep 2, 4:44 PM EDT	Special Weather Statement	PHI	Lehigh	46 min
Sep 2, 4:52 PM EDT	Special Weather Statement	PHI	Bucks	38 min
Sep 2, 5:05 PM EDT	Areal Flood Advisory	PHI	Lehigh	115 min
Sep 2, 5:39 PM EDT	Flash Flood Warning	PHI	Lehigh	2 hr
Sep 2, 5:46 PM EDT	Special Weather Statement	PHI	Lehigh	44 min
Sep 2, 6:57 PM EDT	Special Weather Statement	PHI	Montgomery	48 min
Sep 2, 7:59 PM EDT	Special Weather Statement	PHI	Chester	46 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2013 Every severe thunderstorm warning in 2013

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.