Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 97, NWS Philadelphia/Mount Holly

July 19, 2010Carbon County, Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 19, 2010, 2:21 PM EDT for Carbon County, Monroe County, Pennsylvania. It was in force for 54 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 19, 2010, 2:21 PM EDT (18:21 UTC)
Expired: Jul 19, 2010, 3:15 PM EDT
In force: 54 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Carbon County, PA, Monroe County, PA

The radar

The Binghamton radar (KBGM), 137 km from the middle of the area, began a volume at 18:21 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 6.4 hours before the alert went out and 171 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: 775 J/kg
Mixed-layer CIN: -101 J/kg
Mixed-layer LCL: 883 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: -31 m²/s²
0-3 km storm-relative helicity: 75 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

379 
WUUS51 KPHI 191821
SVRPHI
PAC025-089-191915-
/O.NEW.KPHI.SV.W.0097.100719T1821Z-100719T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
221 PM EDT MON JUL 19 2010

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

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

* UNTIL 315 PM EDT

* AT 218 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 7 MILES
  WEST OF WEATHERLY...OR 16 MILES NORTHWEST OF LEHIGHTON...AND MOVING
  EAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WEATHERLY AROUND 230 PM EDT...
  CHRISTMANS AROUND 250 PM EDT...
  ALBRIGHTSVILLE AROUND 255 PM EDT...
  PENN FOREST RESERVOIR AND MECKESVILLE AROUND 300 PM EDT...
  JONAS AROUND 305 PM EDT...
  GILBERT AROUND 310 PM 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! LIGHTNING IS ONE OF NATURES GREATEST KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

LAT...LON 4110 7540 4082 7545 4085 7594 4090 7600
      4092 7599 4095 7588 4098 7584 4101 7575
      4105 7578 4110 7577
TIME...MOT...LOC 1821Z 274DEG 25KT 4098 7592

$$

GORSE

2 follow-up statements

476 
WWUS51 KPHI 191846
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
246 PM EDT MON JUL 19 2010

PAC025-089-191915-
/O.CON.KPHI.SV.W.0097.000000T0000Z-100719T1915Z/
CARBON PA-MONROE PA-
246 PM EDT MON JUL 19 2010

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR SOUTHWESTERN MONROE AND CARBON COUNTIES...

AT 244 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING HAIL UP TO 
QUARTER SIZE...AND DAMAGING WINDS TO 60 MPH. THIS STORM WAS LOCATED 
NEAR CHRISTMANS...OR 10 MILES NORTH OF LEHIGHTON...MOVING EAST AT
35 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  ALBRIGHTSVILLE...7 MILES SOUTH OF LAKE HARMONY...7 MILES NORTH OF
  BELTZVILLE STATE PARK AND 9 MILES SOUTH OF BLAKESLEE BY 250 PM
  EDT...
  MECKESVILLE AND PENN FOREST RESERVOIR BY 255 PM EDT...
  JONAS AND 6 MILES SOUTH OF POCONO RACEWAY BY 300 PM EDT...
  GILBERT AND 6 MILES SOUTH OF LONG POND BY 305 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM MAY INTENSIFY ONCE AGAIN, THEREFORE REMAIN INDOORS AND 
AWAY FROM WINDOWS. HEAVY RAIN WILL FALL FROM THIS STORM, WHICH WILL 
QUICKLY FILL POOR DRAINAGE AREAS.

&&

LAT...LON 4110 7540 4082 7545 4085 7594 4090 7600
      4092 7599 4095 7588 4098 7584 4101 7575
      4105 7578 4110 7577
TIME...MOT...LOC 1844Z 270DEG 31KT 4097 7568

$$

GORSE

346 
WWUS51 KPHI 191907
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
307 PM EDT MON JUL 19 2010

PAC025-089-191916-
/O.EXP.KPHI.SV.W.0097.000000T0000Z-100719T1915Z/
CARBON PA-MONROE PA-
307 PM EDT MON JUL 19 2010

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MONROE AND CARBON
COUNTIES WILL EXPIRE AT 315 PM EDT...

THE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED, THEREFORE 
THE WARNING WILL BE ALLOWED TO EXPIRE AT 315 PM. HOWEVER, HEAVY 
DOWNPOURS, LOCALLY GUSTY WINDS AND SOME CLOUD TO GROUND LIGHTNING 
WILL ACCOMPANY THIS STORM.

LAT...LON 4110 7540 4082 7545 4085 7594 4090 7600
      4092 7599 4095 7588 4098 7584 4101 7575
      4105 7578 4110 7577
TIME...MOT...LOC 1906Z 270DEG 31KT 4097 7543

$$

GORSE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 5:15 AM EDT	Special Weather Statement	PHI	Berks	60 min
Jul 19, 6:04 AM EDT	Special Weather Statement	PHI	Berks, Carbon, Lehigh, Monroe, Montgomery, Northampton	56 min
Jul 19, 6:58 AM EDT	Special Weather Statement	PHI	Carbon, Lehigh, Monroe, Northampton	62 min
Jul 19, 7:46 AM EDT	Special Weather Statement	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	59 min
Jul 19, 8:19 AM EDT	Special Weather Statement	PHI	Montgomery	56 min
Jul 19, 8:47 AM EDT	Special Weather Statement	PHI	Delaware	58 min
Jul 19, 9:07 AM EDT	Severe Thunderstorm Warning	PHI	Bucks, Delaware, Montgomery, Philadelphia	53 min
Jul 19, 2:09 PM EDT	Special Weather Statement	PHI	Carbon	51 min
Jul 19, 4:24 PM EDT	Special Weather Statement	PHI	Carbon	36 min
Jul 19, 5:11 PM EDT	Special Weather Statement	PHI	Monroe	49 min
Jul 19, 5:24 PM EDT	Special Weather Statement	PHI	Northampton	51 min
Jul 19, 5:25 PM EDT	Special Weather Statement	PHI	Chester, Delaware, Montgomery	65 min
Jul 19, 5:39 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester	66 min
Jul 19, 6:22 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Montgomery, Philadelphia	53 min
Jul 19, 6:34 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery, Philadelphia	56 min
Jul 19, 6:57 PM EDT	Special Weather Statement	PHI	Berks, Lehigh, Northampton	48 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2010 Every severe thunderstorm warning in 2010

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.