Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 16, NWS Philadelphia/Mount Holly

May 22, 20144 counties in Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 22, 2014, 2:40 PM EDT for 4 counties in Pennsylvania. It was in force for 50 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 22, 2014, 2:40 PM EDT (18:40 UTC)
Expired: May 22, 2014, 3:30 PM EDT
In force: 50 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA

What was reported inside it

Time	Report	Where	Remark
May 22, 2:45 PM EDT	HAIL 1	Christmans, PA
May 22, 2:58 PM EDT	HAIL 0.75	Beltzville, PA	HAIL COVERED THE GROUND.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
May 22, 12:39 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 6.7 hours before the alert went out and 228 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 707 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 127 m²/s²
0-3 km storm-relative helicity: 171 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.

062 
WUUS51 KPHI 221840
SVRPHI
PAC025-077-089-095-221930-
/O.NEW.KPHI.SV.W.0016.140522T1840Z-140522T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
240 PM EDT THU MAY 22 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL LEHIGH COUNTY IN EASTERN PENNSYLVANIA...
  SOUTHWESTERN MONROE COUNTY IN NORTHEAST PENNSYLVANIA...
  EASTERN CARBON COUNTY IN NORTHEAST PENNSYLVANIA...
  WEST CENTRAL NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...

* UNTIL 330 PM EDT

* AT 236 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM. THE STORM WAS NEAR CHRISTMANS...MOVING
  SOUTHEAST AT 35 MPH. THIS STORM IS CAPABLE OF PRODUCING DAMAGING
  WINDS IN EXCESS OF 60 MPH. 

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  PENN FOREST RESERVOIR AROUND 250 PM EDT...
  BELTZVILLE STATE PARK AND KRESGEVILLE AROUND 255 PM EDT...
  PALMERTON AROUND 300 PM EDT...
  DANIELSVILLE AND BERLINSVILLE AROUND 305 PM EDT...
  BEERSVILLE AROUND 310 PM EDT...
  NORTHAMPTON AROUND 315 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE WINDS OF MORE THAN 57 MPH...OR HAIL ONE
INCH OR LARGER.

VERY HEAVY RAIN WILL ALSO OCCUR WITH THIS SEVERE THUNDERSTORM...WHICH
COULD FLOOD LOW LYING AREAS QUICKLY AND COVER ROADS WITH WATER. DO
NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM...AND
THE STORM WILL AFFECT THE BEACHES. FOR YOUR SAFETY...IMMEDIATELY MOVE
OFF THE BEACH AND SEEK SHELTER INDOORS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
THURSDAY EVENING FOR NORTHERN NEW JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 4071 7528 4063 7554 4100 7577 4101 7574
      4102 7574 4107 7568
TIME...MOT...LOC 1840Z 326DEG 30KT 4097 7567

$$

FORECASTER:  DRAG

2 follow-up statements

159 
WWUS51 KPHI 221854
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
254 PM EDT THU MAY 22 2014

PAC025-077-089-095-221930-
/O.CON.KPHI.SV.W.0016.000000T0000Z-140522T1930Z/
LEHIGH PA-MONROE PA-CARBON PA-NORTHAMPTON PA-
254 PM EDT THU MAY 22 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR WEST CENTRAL NORTHAMPTON...EAST CENTRAL CARBON...SOUTHWESTERN
MONROE AND CENTRAL LEHIGH COUNTIES...

AT 249 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR PENN FOREST
RESERVOIR...OR 11 MILES NORTHEAST OF LEHIGHTON...MOVING SOUTHEAST AT 
35 MPH.  THIS STORM HAS WEAKENED SLIGHT SINCE 245 PM. 

THE SEVERE THUNDERSTORM WILL BE NEAR...
TRACHSVILLE AND KRESGEVILLE AROUND 300 PM EDT...
KUNKLETOWN AND DANIELSVILLE AROUND 310 PM EDT...
BEERSVILLE AROUND 315 PM EDT...
CHAPMAN AND NORTHAMPTON AROUND 320 PM EDT...
BATH AND STEUBEN AROUND 325 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! REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
THURSDAY EVENING FOR NORTHERN NEW JERSEY AND EASTERN PENNSYLVANIA. A
SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM EDT
THURSDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN
NEW JERSEY.

&&

LAT...LON 4092 7563 4096 7563 4099 7560 4071 7528
      4063 7554
TIME...MOT...LOC 1853Z 319DEG 30KT 4094 7557

$$

FORECASTER:  DRAG

299 
WWUS51 KPHI 221908
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
308 PM EDT THU MAY 22 2014

PAC089-221916-
/O.CAN.KPHI.SV.W.0016.000000T0000Z-140522T1930Z/
MONROE PA-
308 PM EDT THU MAY 22 2014

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MONROE 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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT 
THURSDAY EVENING FOR NORTHERN NEW JERSEY AND EASTERN PENNSYLVANIA.

LAT...LON 4081 7547 4082 7546 4082 7541 4071 7528
      4063 7554 4086 7561 4088 7559 4089 7553
TIME...MOT...LOC 1906Z 319DEG 30KT 4083 7543 4079 7557

$$

PAC025-077-095-221930-
/O.CON.KPHI.SV.W.0016.000000T0000Z-140522T1930Z/
LEHIGH PA-CARBON PA-NORTHAMPTON PA-
308 PM EDT THU MAY 22 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR WEST CENTRAL NORTHAMPTON...SOUTHEASTERN CARBON AND CENTRAL LEHIGH
COUNTIES...

AT 302 PM EDT...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE
OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM TRACHSVILLE TO BERLINSVILLE...
MOVING SOUTHEAST AT 35 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
CHAPMAN AND BEERSVILLE AROUND 315 PM EDT...
HOKENDAUQUA AND COPLAY AROUND 320 PM EDT...
NORTH CATASAUQUA AND STEUBEN AROUND 325 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING STRONG WINDS AND MULTIPLE 
SIZES OF HAIL INCLUDING 1 INCH DIAMETER HAIL. SEEK SHELTER NOW 
INSIDE A STURDY STRUCTURE...AND STAY AWAY FROM WINDOWS.

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
THURSDAY EVENING FOR NORTHERN NEW JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 4081 7547 4082 7546 4082 7541 4071 7528
      4063 7554 4086 7561 4088 7559 4089 7553
TIME...MOT...LOC 1906Z 319DEG 30KT 4083 7543 4079 7557

$$

FORECASTER:  DRAG

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 3:25 AM EDT	Special Weather Statement	PHI	Lehigh	65 min
May 22, 2:12 PM EDT	Special Weather Statement	PHI	Berks	63 min
May 22, 2:14 PM EDT	Severe Thunderstorm Warning	PHI	Berks	46 min
May 22, 2:29 PM EDT	Special Weather Statement	PHI	Carbon	46 min
May 22, 2:50 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Montgomery	55 min
May 22, 3:09 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh	66 min
May 22, 3:21 PM EDT	Special Weather Statement	PHI	Northampton	24 min
May 22, 3:27 PM EDT	Severe Thunderstorm Warning	PHI	Lehigh, Northampton	33 min
May 22, 3:33 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Montgomery	57 min
May 22, 3:51 PM EDT	Severe Thunderstorm Warning	PHI	Berks	39 min
May 22, 3:56 PM EDT	Special Weather Statement	PHI	Bucks	34 min
May 22, 4:13 PM EDT	Severe Thunderstorm Warning	PHI	Delaware, Philadelphia	62 min
May 22, 4:22 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	38 min
May 22, 4:22 PM EDT	Severe Thunderstorm Warning	PHI	Delaware, Philadelphia	53 min
May 22, 4:31 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Delaware, Montgomery	44 min
May 22, 5:23 PM EDT	Special Weather Statement	PHI	Delaware	37 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.