Alert archive / Pennsylvania / Tornado Warnings in 2002

Tornado Warning 4, NWS State College, PA

June 5, 2002Warren County, Pennsylvania

NWS State College, PA issued this tornado warning at Jun 5, 2002, 5:39 PM EDT for Warren County, Pennsylvania. It was in force for 51 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 5, 2002, 5:39 PM EDT (21:39 UTC)
Expired: Jun 5, 2002, 6:30 PM EDT
In force: 51 min
Issued by: NWS State College, PA
Area: Whole counties

County Warren County, PA

The radar

The Buffalo radar (KBUF), 134 km from the middle of the area, began a volume at 21:41 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.

What was reported inside it

Time	Report	Where	Remark
Jun 5, 6:00 PM EDT	Thunderstorm Wind 60 E	Youngsville, PA	Trees were down in Youngsville.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

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 5, 3:15 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 9.7 hours before the alert went out and 133 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: 296 J/kg
Mixed-layer CIN: -113 J/kg
Mixed-layer LCL: 753 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 202 m²/s²
0-3 km storm-relative helicity: 221 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.2

Open this sounding in Storm Lab

The text

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

000 
WFUS51 KCTP 052139
TORCTP
PAC123-052230-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
539 PM EDT WED JUN 5 2002

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* TORNADO WARNING FOR...
  WARREN COUNTY IN PENNSYLVANIA

* UNTIL 630 PM EDT.

* AT 533 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH A DEVELOPING TORNADO NEAR GRAND VALLEY...
  OR 12 MILES EAST OF TITUSVILLE...MOVING EAST AT 45 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  CHAPMAN SP AT 550 PM.
  SHEFFIELD AT 600 PM.

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.

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 4, 8:02 PM EDT	Severe Thunderstorm Warning	CTP	Centre	28 min
Jun 5, 2:24 AM EDT	Severe Thunderstorm Warning	CTP	Warren	21 min
Jun 5, 4:15 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield	60 min
Jun 5, 4:38 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Mifflin	52 min
Jun 5, 5:05 PM EDT	Severe Thunderstorm Warning	CTP	Clinton	55 min
Jun 5, 5:11 PM EDT	Severe Thunderstorm Warning	CTP	Warren	64 min
Jun 5, 5:22 PM EDT	Severe Thunderstorm Warning	CTP	Franklin	53 min
Jun 5, 5:26 PM EDT	Severe Thunderstorm Warning	CTP	Union	49 min
Jun 5, 5:31 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton	44 min
Jun 5, 5:31 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming	59 min
Jun 5, 5:35 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton	40 min
Jun 5, 5:52 PM EDT	Severe Thunderstorm Warning	CTP	Adams	38 min
Jun 5, 6:00 PM EDT	Severe Thunderstorm Warning	CTP	Sullivan	60 min

Nearby

Tornado Warnings in Pennsylvania, 2002 Every tornado warning in 2002 Tornadoes in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.