Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 4, NWS State College, PA

April 1, 2016Lancaster County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Apr 1, 2016, 4:55 PM EDT for Lancaster County, Pennsylvania. It was in force for 27 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
Apr 1, 2016, 4:55 PM EDT (20:55 UTC)
Expired
Apr 1, 2016, 5:22 PM EDT
In force
27 min
Issued by
NWS State College, PA
Area
Storm-based polygon

County Lancaster County, PA

The radar

The Philadelphia radar (KDIX), 143 km from the middle of the area, began a volume at 20:57 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

Washington/Dulle, VA (KIAD), launched 12:00Z, 8.9 hours before the alert went out and 172 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-pSkew-T log-p diagram, Washington/Dulle, VA at 12:00Z on 2016-04-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 136 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 12:00Z on 2016-04-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 124 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
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
136 J/kg
Mixed-layer CIN
-172 J/kg
Mixed-layer LCL
1035 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
124 m²/s²
0-3 km storm-relative helicity
136 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

864 
WUUS51 KCTP 012055
SVRCTP
PAC071-012200-
/O.NEW.KCTP.SV.W.0004.160401T2055Z-160401T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
455 PM EDT FRI APR 1 2016

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN LANCASTER COUNTY IN SOUTH CENTRAL PENNSYLVANIA...

* UNTIL 600 PM EDT

* AT 455 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING DAMAGING WINDS AROUND 60 MPH. THIS STORM WAS
  LOCATED NEAR LANCASTER...AND MOVING NORTHEAST AT 65 MPH. PENNY SIZE
  HAIL MAY ALSO ACCOMPANY THE DAMAGING WINDS.

* LOCATIONS IMPACTED INCLUDE...
  LANCASTER...AKRON...NEW HOLLAND...EAST PETERSBURG...LITITZ...WILLOW
  STREET...EPHRATA...MILLERSVILLE...BAREVILLE...ADAMSTOWN...
  PARADISE...ROTHSVILLE...STRASBURG...LEOLA...CHURCHTOWN...
  REAMSTOWN...DENVER...LEACOCK...TERRE HILL AND SALUNGA-LANDISVILLE.

THIS INCLUDES THE PENNSYLVANIA TURNPIKE FROM MILE MARKERS 280 TO 295.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE THUNDERSTORM WIND GUSTS ARE EXPECTED TO PRODUCE DAMAGE. PEOPLE
OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG
BUILDING.

IN ADDITION TO OTHER THREATS...CONTINUOUS LIGHTNING IS OCCURRING WITH
THIS STORM. MOVE INDOORS IMMEDIATELY. LIGHTNING IS ONE OF NATURES
LEADING KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.

&&

LAT...LON 4011 7594 4006 7593 3994 7631 4010 7642
      4030 7612 4014 7587
TIME...MOT...LOC 2055Z 245DEG 55KT 4006 7627 

$$

LA CORTE
2 follow-up statements
870 
WWUS51 KCTP 012110
SVSCTP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
510 PM EDT FRI APR 1 2016

PAC071-012200-
/O.CON.KCTP.SV.W.0004.000000T0000Z-160401T2200Z/
LANCASTER PA-
510 PM EDT FRI APR 1 2016

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

AT 509 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED OVER TERRE HILL...MOVING NORTHEAST AT 65 MPH. PENNY SIZE HAIL
MAY ALSO ACCOMPANY THE DAMAGING WINDS.

THE STORM APPEARS TO BE WEAKENING AND WILL BE OUT OF THE COUNTY
BEFORE 5:30 PM.

LOCATIONS IMPACTED INCLUDE...
NEW HOLLAND...EPHRATA...AKRON...ADAMSTOWN...CHURCHTOWN...REAMSTOWN...
TERRE HILL...BAREVILLE...BOWMANSVILLE...GOODVILLE...BLUE BALL...
INTERCOURSE...FARMERSVILLE AND FIVEPOINTVILLE.

LAT...LON 4011 7594 4003 7610 4017 7620 4025 7605
      4014 7587
TIME...MOT...LOC 2109Z 245DEG 55KT 4014 7606 

$$

LA CORTE
612 
WWUS51 KCTP 012122
SVSCTP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
522 PM EDT FRI APR 1 2016

PAC071-012132-
/O.CAN.KCTP.SV.W.0004.000000T0000Z-160401T2200Z/
LANCASTER PA-
522 PM EDT FRI APR 1 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LANCASTER COUNTY
IS CANCELLED...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 4011 7594 4003 7610 4017 7620 4025 7605
      4014 7587
TIME...MOT...LOC 2120Z 245DEG 55KT 4023 7581 

$$

LA CORTE

The office that day

Everything else NWS State College, PA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 1, 2:04 PM EDTSpecial Weather StatementCTPColumbia26 min
Apr 1, 2:18 PM EDTSpecial Weather StatementCTPSchuylkill57 min
Apr 1, 4:10 PM EDTWinter Weather AdvisoryCTPMcKean, Potter, Tioga, Warren41 hr
Apr 1, 4:20 PM EDTWind AdvisoryCTPAdams, Bedford, Blair, Cambria, Cameron, Centre and 23 more40 hr
Apr 1, 4:36 PM EDTSpecial Weather StatementCTPLancaster24 min
Apr 1, 5:12 PM EDTSpecial Weather StatementCTPLancaster33 min
Apr 1, 6:20 PM EDTSpecial Weather StatementCTPLancaster25 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2016Every severe thunderstorm warning in 2016

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.