Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 63, NWS Philadelphia/Mount Holly

July 2, 2014Berks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 2, 2014, 5:01 PM EDT for Berks County, Pennsylvania. It was in force for 59 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 2, 2014, 5:01 PM EDT (21:01 UTC)
Expired: Jul 2, 2014, 6:00 PM EDT
In force: 59 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

County Berks County, PA

The radar

The Philadelphia radar (KDIX), 146 km from the middle of the area, began a volume at 21:03 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 2, 11:14 AM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.0 hours before the alert went out and 106 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: 1420 J/kg
Mixed-layer CIN: -102 J/kg
Mixed-layer LCL: 901 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 52 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

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

903 
WUUS51 KPHI 022101
SVRPHI
PAC011-022200-
/O.NEW.KPHI.SV.W.0063.140702T2101Z-140702T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
501 PM EDT WED JUL 2 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BERKS COUNTY IN EASTERN PENNSYLVANIA...

* UNTIL 600 PM EDT

* AT 500 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM. THE STORM WAS NEAR DENVER...MOVING NORTHEAST
  AT 25 MPH. THIS STORM IS CAPABLE OF PRODUCING QUARTER SIZE HAIL...
  AND DAMAGING WINDS IN EXCESS OF 60 MPH. 

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WERNERSVILLE AROUND 515 PM EDT...
  SINKING SPRING AND BERNVILLE AROUND 520 PM EDT...
  WYOMISSING AROUND 525 PM EDT...
  WYOMISSING AND READING AROUND 530 PM EDT...
  FAIRVIEW HGTS AROUND 535 PM EDT...
  LAURELDALE AND LEESPORT AROUND 540 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 700 PM EDT
WEDNESDAY EVENING FOR NORTHEASTERN PENNSYLVANIA. A SEVERE
THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 900 PM EDT WEDNESDAY
EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND
SOUTHEAST PENNSYLVANIA.

&&

LAT...LON 4067 7589 4045 7554 4020 7597 4029 7612
      4036 7621 4036 7623 4037 7625
TIME...MOT...LOC 2101Z 234DEG 20KT 4029 7616

$$

FORECASTER:SFJ

3 follow-up statements

900 
WWUS51 KPHI 022115
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
515 PM EDT WED JUL 2 2014

PAC011-022200-
/O.CON.KPHI.SV.W.0063.000000T0000Z-140702T2200Z/
BERKS PA-
515 PM EDT WED JUL 2 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR BERKS COUNTY...

AT 514 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 WERNERSVILLE...OR 8
MILES WEST OF READING...MOVING NORTHEAST AT 25 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  SINKING SPRING...WEST WYOMISSING AND MOHNTON BY 520 PM EDT...
  WHITFIELD...WYOMISSING HILLS...WEST LAWN AND WEST WYOMISSING BY 525
  PM EDT...
  WEST READING AND READING BY 530 PM EDT...
  FAIRVIEW HGTS BY 535 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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT
WEDNESDAY EVENING FOR NORTHEASTERN PENNSYLVANIA. A SEVERE
THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 900 PM EDT WEDNESDAY
EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND
SOUTHEAST PENNSYLVANIA.

LAT...LON 4067 7589 4045 7554 4020 7597 4029 7612
      4036 7621 4036 7623 4037 7625
TIME...MOT...LOC 2115Z 234DEG 20KT 4034 7608

$$

SFJ

109 
WWUS51 KPHI 022136
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
536 PM EDT WED JUL 2 2014

PAC011-022200-
/O.CON.KPHI.SV.W.0063.000000T0000Z-140702T2200Z/
BERKS PA-
536 PM EDT WED JUL 2 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR BERKS COUNTY...

AT 533 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 FAIRVIEW HGTS...OR
NEAR READING...MOVING NORTHEAST AT 25 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  SHOEMAKERSVILLE BY 545 PM EDT...
  9 MILES SOUTHEAST OF HAMBURG BY 550 PM EDT...
  FLEETWOOD BY 555 PM EDT...
  LYONS...KUTZTOWN...6 MILES WEST OF TOPTON AND 7 MILES SOUTHEAST OF
  LENHARTSVILLE BY 600 PM EDT...

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 4067 7589 4045 7554 4020 7597 4029 7612
      4036 7621 4036 7623 4037 7625
TIME...MOT...LOC 2136Z 234DEG 20KT 4041 7596

$$

SFJ

447 
WWUS51 KPHI 022158
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
558 PM EDT WED JUL 2 2014

PAC011-022207-
/O.EXP.KPHI.SV.W.0063.000000T0000Z-140702T2200Z/
BERKS PA-
558 PM EDT WED JUL 2 2014

...THE SEVERE THUNDERSTORM WARNING FOR BERKS COUNTY WILL EXPIRE AT
600 PM EDT...

THE STORM THAT PROMPTED THE WARNING HAS WEAKENED. THUS THE SEVERE 
THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE AT 6 PM EDT. 
HOWEVER...GUSTS TO 40 MPH ARE STILL POSSIBLE WITH THIS STORM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT
WEDNESDAY EVENING FOR NORTHEASTERN PENNSYLVANIA. A SEVERE
THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 900 PM EDT WEDNESDAY
EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND
SOUTHEAST PENNSYLVANIA.

LAT...LON 4067 7589 4045 7554 4020 7597 4029 7612
      4036 7621 4036 7623 4037 7625
TIME...MOT...LOC 2157Z 234DEG 20KT 4048 7584

$$

SFJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 1:10 PM EDT	Special Weather Statement	PHI	Monroe	65 min
Jul 2, 1:34 PM EDT	Severe Thunderstorm Warning	PHI	Monroe	56 min
Jul 2, 1:47 PM EDT	Severe Thunderstorm Warning	PHI	Berks	58 min
Jul 2, 2:45 PM EDT	Special Weather Statement	PHI	Berks	30 min
Jul 2, 2:49 PM EDT	Areal Flood Advisory	PHI	Carbon, Monroe	4 hr
Jul 2, 3:00 PM EDT	Areal Flood Advisory	PHI	Berks	2 hr
Jul 2, 3:24 PM EDT	Special Weather Statement	PHI	Bucks	66 min
Jul 2, 3:25 PM EDT	Special Weather Statement	PHI	Carbon, Monroe	65 min
Jul 2, 3:36 PM EDT	Flash Flood Watch	PHI	Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more	46 hr
Jul 2, 3:58 PM EDT	Areal Flood Advisory	PHI	Monroe, Northampton	4 hr
Jul 2, 4:03 PM EDT	Severe Thunderstorm Warning	PHI	Lehigh, Monroe, Northampton	57 min
Jul 2, 4:56 PM EDT	Areal Flood Advisory	PHI	Berks	2 hr
Jul 2, 5:23 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	67 min
Jul 2, 5:31 PM EDT	Flash Flood Warning	PHI	Berks	4 hr
Jul 2, 5:42 PM EDT	Areal Flood Advisory	PHI	Bucks	3 hr
Jul 2, 5:56 PM EDT	Special Weather Statement	PHI	Lehigh, Northampton	49 min
Jul 2, 6:13 PM EDT	Flash Flood Warning	PHI	Bucks	4 hr
Jul 2, 6:44 PM EDT	Flash Flood Warning	PHI	Berks	4 hr
Jul 2, 6:51 PM EDT	Areal Flood Advisory	PHI	Bucks, Chester, Montgomery	4 hr
Jul 2, 7:00 PM EDT	Special Weather Statement	PHI	Bucks, Chester, Montgomery	60 min
Jul 2, 7:09 PM EDT	Areal Flood Advisory	PHI	Bucks	4 hr
Jul 2, 7:26 PM EDT	Special Weather Statement	PHI	Philadelphia	64 min
Jul 2, 7:32 PM EDT	Special Weather Statement	PHI	Delaware, Montgomery, Philadelphia	58 min
Jul 2, 7:35 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Philadelphia	55 min
Jul 2, 7:48 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	27 min
Jul 2, 7:52 PM EDT	Areal Flood Advisory	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	4 hr

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.