Alert archive / Pennsylvania / Tornado Warnings in 2001

Tornado Warning 6, NWS State College, PA

July 10, 2001Franklin County, Pennsylvania

NWS State College, PA issued this tornado warning at Jul 10, 2001, 3:37 PM EDT for Franklin County, Pennsylvania. It was in force for 23 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: Jul 10, 2001, 3:37 PM EDT (19:37 UTC)
Expired: Jul 10, 2001, 4:00 PM EDT
In force: 23 min
Issued by: NWS State College, PA
Area: Whole counties

County Franklin County, PA

The radar

The Sterling radar (KLWX), 108 km from the middle of the area, began a volume at 19:38 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
Jul 10, 3:50 PM EDT	Thunderstorm Wind 50 E	Quincy, PA	Trees were reported down in Quincy.

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
Jul 10, 1:45 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 7.6 hours before the alert went out and 112 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: 37 J/kg
Mixed-layer CIN: -94 J/kg
Mixed-layer LCL: 1756 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 93 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 101940
TORCTP

PAC055-102000-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
337 PM EDT TUE JUL 10 2001

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* TORNADO WARNING FOR...
  FRANKLIN COUNTY IN PENNSYLVANIA

* UNTIL 400 PM EDT.

* AT 328 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH A DEVELOPING TORNADO NEAR MARION...OR NEAR
  CHAMBERSBURG...MOVING SOUTHEAST AT 60 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  ROUZERVILLE AT 340 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.

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS.

$$
GRUMM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 7:37 AM EDT	Severe Thunderstorm Warning	CTP	McKean	53 min
Jul 10, 1:24 PM EDT	Severe Thunderstorm Warning	CTP	Cambria	36 min
Jul 10, 1:41 PM EDT	Severe Thunderstorm Warning	CTP	Schuylkill	79 min
Jul 10, 2:15 PM EDT	Severe Thunderstorm Warning	CTP	Huntingdon	30 min
Jul 10, 2:35 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Dauphin, York	40 min
Jul 10, 2:46 PM EDT	Severe Thunderstorm Warning	CTP	Lebanon	44 min
Jul 10, 2:59 PM EDT	Severe Thunderstorm Warning	CTP	Clinton	46 min
Jul 10, 3:04 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield	41 min
Jul 10, 3:11 PM EDT	Severe Thunderstorm Warning	CTP	Franklin	49 min
Jul 10, 3:17 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	43 min
Jul 10, 3:26 PM EDT	Tornado Warning	CTP	Clinton	34 min
Jul 10, 3:31 PM EDT	Severe Thunderstorm Warning	CTP	Cambria	44 min
Jul 10, 3:35 PM EDT	Severe Thunderstorm Warning	CTP	Somerset	40 min
Jul 10, 3:49 PM EDT	Severe Thunderstorm Warning	CTP	Adams	41 min
Jul 10, 4:16 PM EDT	Severe Thunderstorm Warning	CTP	Somerset	44 min
Jul 10, 4:22 PM EDT	Severe Thunderstorm Warning	CTP	Clinton	38 min
Jul 10, 4:37 PM EDT	Severe Thunderstorm Warning	CTP	Centre	53 min
Jul 10, 4:59 PM EDT	Severe Thunderstorm Warning	CTP	Clinton	46 min
Jul 10, 5:04 PM EDT	Severe Thunderstorm Warning	CTP	Northumberland, Snyder	56 min
Jul 10, 5:41 PM EDT	Severe Thunderstorm Warning	CTP	Columbia	64 min
Jul 10, 6:21 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield	39 min
Jul 10, 6:43 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria	47 min
Jul 10, 7:06 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin	54 min
Jul 10, 7:14 PM EDT	Tornado Warning	CTP	Dauphin	46 min
Jul 10, 7:23 PM EDT	Severe Thunderstorm Warning	CTP	Lebanon	67 min

Nearby

Tornado Warnings in Pennsylvania, 2001 Every tornado warning in 2001 Tornadoes in 2001

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.