Alert archive / Pennsylvania / Tornado Warnings in 2004

Tornado Warning 14, NWS State College, PA

August 4, 2004York County, Pennsylvania

NWS State College, PA issued this tornado warning at Aug 4, 2004, 6:58 PM EDT for York County, Pennsylvania. It was in force for 32 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: Aug 4, 2004, 6:58 PM EDT (22:58 UTC)
Expired: Aug 4, 2004, 7:30 PM EDT
In force: 32 min
Issued by: NWS State College, PA
Area: Counties, with a storm outline in the text

County York County, PA

The radar

The Sterling radar (KLWX), 136 km from the middle of the area, began a volume at 23:02 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
Aug 4, 2:55 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 11.0 hours before the alert went out and 134 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: 24 J/kg
Mixed-layer CIN: -92 J/kg
Mixed-layer LCL: 1125 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: -4 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.

000 
WFUS51 KCTP 042258
TORCTP
PAC133-042330-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
657 PM EDT WED AUG 4 2004

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* TORNADO WARNING FOR...
  YORK COUNTY IN SOUTH CENTRAL PENNSYLVANIA

* UNTIL 730 PM EDT

* AT 655 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION NEAR SAFE HARBOR...OR 7
  MILES SOUTH OF COLUMBIA...MOVING EAST AT 45 MPH. THIS DANGEROUS
  STORM COULD PRODUCE A TORNADO AT ANY TIME.

* THE TORNADO IS EXPECTED TO BE NEAR...
  BROGUE AROUND 700 PM EDT...

THERE WAS A TORNADO REPORTED WITH THIS STORM IN NEWBERRYTOWN.

FOR YOUR PROTECTION FROM THE DAMAGING WINDS OF A TORNADO...GO TO A
BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR
BUSINESS.

PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE...1-877-633-6772.

LAT...LON 4004 7659 3985 7662 3982 7638 4001 7651

JV

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 2:30 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield	75 min
Aug 4, 2:49 PM EDT	Tornado Warning	CTP	Clearfield	26 min
Aug 4, 3:22 PM EDT	Severe Thunderstorm Warning	CTP	Cambria, Somerset	53 min
Aug 4, 3:57 PM EDT	Severe Thunderstorm Warning	CTP	Centre	63 min
Aug 4, 4:09 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Somerset	66 min
Aug 4, 4:20 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Perry	55 min
Aug 4, 4:24 PM EDT	Severe Thunderstorm Warning	CTP	Mifflin	36 min
Aug 4, 4:41 PM EDT	Severe Thunderstorm Warning	CTP	Huntingdon	64 min
Aug 4, 4:45 PM EDT	Severe Thunderstorm Warning	CTP	Snyder, Union	60 min
Aug 4, 4:54 PM EDT	Severe Thunderstorm Warning	CTP	Fulton	36 min
Aug 4, 5:14 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Perry	61 min
Aug 4, 5:19 PM EDT	Severe Thunderstorm Warning	CTP	Franklin	71 min
Aug 4, 5:25 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Northumberland	65 min
Aug 4, 5:43 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland	62 min
Aug 4, 6:02 PM EDT	Tornado Warning	CTP	Cumberland, Dauphin	43 min
Aug 4, 6:06 PM EDT	Severe Thunderstorm Warning	CTP	York	54 min
Aug 4, 6:12 PM EDT	Tornado Warning	CTP	York	48 min
Aug 4, 6:17 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, Lebanon	73 min
Aug 4, 6:36 PM EDT	Tornado Warning	CTP	Lancaster	39 min
Aug 4, 7:13 PM EDT	Tornado Warning	CTP	Lancaster	47 min

Nearby

Tornado Warnings in Pennsylvania, 2004 Every tornado warning in 2004 Tornadoes in 2004

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.