Alert archive / Pennsylvania / Tornado Warnings in 2015

Tornado Warning 8, NWS State College, PA

June 30, 2015Lancaster County, Pennsylvania

NWS State College, PA issued this tornado warning at Jun 30, 2015, 2:05 PM EDT for Lancaster County, Pennsylvania. It was in force for 25 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: Jun 30, 2015, 2:05 PM EDT (18:05 UTC)
Expired: Jun 30, 2015, 2:30 PM EDT
In force: 25 min
Issued by: NWS State College, PA
Area: Storm-based polygon

County Lancaster County, PA

The radar

The Philadelphia radar (KDIX), 131 km from the middle of the area, began a volume at 18:07 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
Jun 30, 1:21 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 6.1 hours before the alert went out and 66 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: 600 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 728 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 128 m²/s²
0-3 km storm-relative helicity: 128 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.9

Open this sounding in Storm Lab

The text

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

099 
WFUS51 KCTP 301805
TORCTP
PAC071-301830-
/O.NEW.KCTP.TO.W.0008.150630T1805Z-150630T1830Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
205 PM EDT TUE JUN 30 2015

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN LANCASTER COUNTY IN SOUTH CENTRAL PENNSYLVANIA...

* UNTIL 230 PM EDT
    
* AT 205 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED
  NEAR HONEY BROOK...AND MOVING NORTHEAST AT 35 MPH.

* THIS TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
  EASTERN LANCASTER COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE IN A MOBILE
HOME OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4002 7595 4006 7599 4010 7594 4007 7594
      4005 7593 4004 7593
TIME...MOT...LOC 1805Z 240DEG 29KT 4007 7594 

$$

LAMBERT/CERU

1 follow-up statement

763 
WWUS51 KCTP 301823
SVSCTP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
223 PM EDT TUE JUN 30 2015

PAC071-301831-
/O.EXP.KCTP.TO.W.0008.000000T0000Z-150630T1830Z/
LANCASTER PA-
223 PM EDT TUE JUN 30 2015

...THE TORNADO WARNING FOR EASTERN LANCASTER COUNTY WILL EXPIRE AT
230 PM EDT...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED JUST 
TO THE NORTHEAST OF THE LANCASTER...BERKS COUNTY LINE...OR ABOUT 7 
MILES TO THE EAST OF CHURCHTOWN.

THEREFORE...THE WARNING WILL BE ALLOWED TO EXPIRE AT 230 PM.

LAT...LON 4002 7595 4006 7599 4010 7594 4007 7594
      4005 7593 4004 7593
TIME...MOT...LOC 1820Z 240DEG 29KT 4007 7594 

$$

LAMBERT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 9:28 AM EDT	Special Weather Statement	CTP	Sullivan	32 min
Jun 30, 12:00 PM EDT	Special Weather Statement	CTP	Lebanon	60 min
Jun 30, 12:51 PM EDT	Areal Flood Advisory	CTP	Lebanon	3 hr
Jun 30, 1:06 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	54 min
Jun 30, 1:20 PM EDT	Areal Flood Advisory	CTP	Schuylkill	3 hr
Jun 30, 1:23 PM EDT	Areal Flood Advisory	CTP	Blair, Huntingdon	3 hr
Jun 30, 1:35 PM EDT	Areal Flood Advisory	CTP	Lancaster, York	3 hr
Jun 30, 1:54 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	66 min
Jun 30, 1:59 PM EDT	Areal Flood Advisory	CTP	Centre, Huntingdon, Mifflin	3 hr
Jun 30, 2:14 PM EDT	Flash Flood Watch	CTP	Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon and 3 more	13 hr
Jun 30, 2:26 PM EDT	Flash Flood Warning	CTP	Lancaster, York	3 hr
Jun 30, 2:46 PM EDT	Special Weather Statement	CTP	Juniata	44 min
Jun 30, 2:56 PM EDT	Special Weather Statement	CTP	Adams	49 min
Jun 30, 3:07 PM EDT	Severe Thunderstorm Warning	CTP	Mifflin, Snyder, Union	53 min
Jun 30, 3:28 PM EDT	Tornado Warning	CTP	Snyder, Union	47 min
Jun 30, 3:43 PM EDT	Special Weather Statement	CTP	Adams	32 min
Jun 30, 3:47 PM EDT	Special Weather Statement	CTP	Schuylkill	43 min
Jun 30, 3:58 PM EDT	Flash Flood Warning	CTP	Schuylkill	3 hr
Jun 30, 4:05 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Montour, Northumberland	55 min
Jun 30, 4:12 PM EDT	Areal Flood Advisory	CTP	Clearfield, Elk	3 hr
Jun 30, 4:19 PM EDT	Special Weather Statement	CTP	Lebanon	56 min
Jun 30, 4:24 PM EDT	Severe Thunderstorm Warning	CTP	Schuylkill	66 min
Jun 30, 4:42 PM EDT	Areal Flood Advisory	CTP	Northumberland, Snyder	3 hr
Jun 30, 4:43 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, Lebanon	77 min
Jun 30, 5:04 PM EDT	Areal Flood Advisory	CTP	Lancaster, Lebanon	3 hr
Jun 30, 5:37 PM EDT	Areal Flood Advisory	CTP	Cameron, Clinton, Lycoming, Potter, Tioga	3 hr
Jun 30, 5:53 PM EDT	Special Weather Statement	CTP	Adams	22 min
Jun 30, 6:03 PM EDT	Special Weather Statement	CTP	Centre	27 min
Jun 30, 6:10 PM EDT	Special Weather Statement	CTP	Lancaster	35 min
Jun 30, 7:13 PM EDT	Special Weather Statement	CTP	Union	62 min
Jun 30, 7:29 PM EDT	Special Weather Statement	CTP	Lancaster	76 min
Jun 30, 7:55 PM EDT	Special Weather Statement	CTP	Blair, Cambria	65 min
Jun 30, 7:57 PM EDT	Special Weather Statement	CTP	Lycoming, Mifflin, Montour, Northumberland, Snyder, Sullivan and 1 more	63 min

Nearby

Tornado Warnings in Pennsylvania, 2015 Every tornado warning in 2015 Tornadoes in 2015

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.