Alert archive / Pennsylvania / Tornado Warnings in 2004
Tornado Warning 20, NWS State College, PA
NWS State College, PA issued this tornado warning at Sep 17, 2004, 7:20 PM EDT for Franklin County, Pennsylvania. It was in force for 40 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
- Sep 17, 2004, 7:20 PM EDT (23:20 UTC)
- Expired
- Sep 17, 2004, 8:00 PM EDT
- In force
- 40 min
- Issued by
- NWS State College, PA
- Area
- Counties, with a storm outline in the text
County Franklin County, PA
The radar
The Sterling radar (KLWX), 102 km from the middle of the area, began a volume at 23:23 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 |
|---|---|---|---|
| Sep 17, 6:50 PM EDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 11.3 hours before the alert went out and 107 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.
- Mixed-layer CAPE
- 105 J/kg
- Mixed-layer CIN
- -89 J/kg
- Mixed-layer LCL
- 687 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- 150 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS51 KCTP 172320 TORCTP PAC055-180000- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 720 PM EDT FRI SEP 17 2004 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A * TORNADO WARNING FOR... FRANKLIN COUNTY IN SOUTH CENTRAL PENNSYLVANIA * UNTIL 800 PM EDT * AT 715 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG ROTATION NEAR GREENCASTLE...MOVING NORTH AT 25 MPH. THIS DANGEROUS STORM COULD PRODUCE A TORNADO AT ANY TIME. * THE TORNADO IS EXPECTED TO BE NEAR... MARION AROUND 725 PM EDT... CHAMBERSBURG AROUND 735 PM EDT... ST. THOMAS AROUND 740 PM EDT... UPPER STRASBURG AROUND 750 PM EDT... 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 3973 7788 3974 7764 4008 7763 4004 7787 $$ JV/DO
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 17, 2:15 PM EDT | Flash Flood Warning | CTP | Warren | 6 hr |
| Sep 17, 5:11 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Fulton | 64 min |
| Sep 17, 5:22 PM EDT | Tornado Warning | CTP | Bedford, Fulton | 53 min |
| Sep 17, 7:29 PM EDT | Tornado Warning | CTP | Fulton | 46 min |
| Sep 17, 7:43 PM EDT | Tornado Warning | CTP | Adams, Franklin | 47 min |
Nearby
Tornado Warnings in Pennsylvania, 2004Every tornado warning in 2004Tornadoes 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.