Alert archive / Pennsylvania / Tornado Warnings in 2011
Tornado Warning 16, NWS State College, PA
NWS State College, PA issued this tornado warning at May 17, 2011, 8:17 PM EDT for Franklin County, Fulton County, Pennsylvania. It was in force for 28 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
- May 17, 2011, 8:17 PM EDT (00:17 UTC)
- Expired
- May 17, 2011, 8:45 PM EDT
- In force
- 28 min
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
Counties Franklin County, PA, Fulton County, PA
The radar
The Sterling radar (KLWX), 105 km from the middle of the area, began a volume at 00:18 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 nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 0.3 hours before the alert went out and 110 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
- 503 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 868 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 127 m²/s²
- 0-3 km storm-relative helicity
- 159 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.4
The text
As transmitted, in the capitals the NWS used until 2016.
532 WFUS51 KCTP 180017 TORCTP PAC055-057-180045- /O.NEW.KCTP.TO.W.0016.110518T0017Z-110518T0045Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 817 PM EDT TUE MAY 17 2011 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A * TORNADO WARNING FOR... SOUTHWESTERN FRANKLIN COUNTY IN SOUTH CENTRAL PENNSYLVANIA... EAST CENTRAL FULTON COUNTY IN SOUTH CENTRAL PENNSYLVANIA... * UNTIL 845 PM EDT * AT 815 PM EDT...LOCAL LAW ENFORCEMENT REPORTED A TORNADO. THE STORM CONTAINING THE TORNADO WAS NEAR WARRENTON...MOVING NORTHWEST AT 25 MPH. * THE TORNADO WILL BE NEAR... GREENCASTLE AROUND 825 PM EDT... CLAYLICK AROUND 835 PM EDT... MERCERSBURG AROUND 840 PM EDT... FORT LOUDON AND MCCONNELLSBURG AROUND 845 PM EDT... THIS WILL IMPACT I-81 BETWEEN MILE MARKERS 1 AND 6. THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 11...ROUTE 30...ROUTE 522. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER INSIDE NOW. DO NOT WAIT TO SEE OR HEAR THE TORNADO. MOVE TO AN INTERIOR ROOM ON THE LOWEST LEVEL OF A STURDY BUILDING. PUT AS MANY WALLS BETWEEN YOU AND THE OUTSIDE AS YOU CAN. AVOID WINDOWS. PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 3990 7811 4002 7786 3972 7764 3972 7793 TIME...MOT...LOC 0017Z 148DEG 21KT 3972 7778 $$ FORECASTER: DANGELO
1 follow-up statement
193 WWUS51 KCTP 180032 SVSCTP SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE STATE COLLEGE PA 832 PM EDT TUE MAY 17 2011 PAC055-057-180045- /O.CON.KCTP.TO.W.0016.000000T0000Z-110518T0045Z/ FRANKLIN PA-FULTON PA- 832 PM EDT TUE MAY 17 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM EDT FOR EAST CENTRAL FULTON AND SOUTHWESTERN FRANKLIN COUNTIES... LAW ENFORCEMENT IN NORTHERN MARYLAND REPORTED A TORNADO MOVING INTO PENNSYLVANIA AT 817 PM. THE TORNADO WOULD CURRENTLY BE LOCATED NEAR CLAYLICK...OR 5 MILES SOUTH OF MERCERSBURG...MOVING NORTHWEST AT 25 MPH. THE TORNADO WILL BE NEAR... MERCERSBURG AROUND 840 PM EDT... FORT LOUDON AND MCCONNELLSBURG AROUND 845 PM EDT... THIS WILL IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 30...ROUTE 522. PRECAUTIONARY/PREPAREDNESS ACTIONS... THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. && LAT...LON 3990 7811 4002 7786 3972 7778 3972 7793 TIME...MOT...LOC 0031Z 145DEG 22KT 3979 7786 $$ FORECASTER: DANGELO
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 17, 8:45 PM EDT | Tornado Warning | CTP | Franklin, Fulton | 45 min |
| May 17, 9:30 PM EDT | Special Weather Statement | CTP | Bedford | 30 min |
| May 18, 2:25 AM EDT | Areal Flood Advisory | CTP | Somerset | 3 hr |
| May 18, 5:13 AM EDT | Areal Flood Advisory | CTP | Bedford, Somerset | 3 hr |
| May 18, 11:51 AM EDT | Special Weather Statement | CTP | Bedford | 24 min |
| May 18, 12:00 PM EDT | Special Weather Statement | CTP | Fulton | 30 min |
| May 18, 12:14 PM EDT | Special Weather Statement | CTP | Somerset | 31 min |
| May 18, 2:51 PM EDT | Special Weather Statement | CTP | York | 54 min |
| May 18, 3:11 PM EDT | Severe Thunderstorm Warning | CTP | York | 49 min |
| May 18, 4:00 PM EDT | Areal Flood Advisory | CTP | Bedford, Somerset | 3 hr |
| May 18, 4:11 PM EDT | Flash Flood Warning | CTP | Somerset | 3 hr |
| May 18, 4:20 PM EDT | Areal Flood Advisory | CTP | Cumberland, Dauphin, York | 3 hr |
| May 18, 4:23 PM EDT | Special Weather Statement | CTP | Juniata, Perry | 67 min |
| May 18, 4:31 PM EDT | Flash Flood Warning | CTP | Adams, Cumberland, Dauphin, Lancaster, Perry, York | 4 hr |
| May 18, 4:47 PM EDT | Special Weather Statement | CTP | Dauphin | 43 min |
| May 18, 5:11 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 64 min |
| May 18, 5:20 PM EDT | Areal Flood Advisory | CTP | Centre, Juniata, Mifflin, Snyder, Union | 3 hr |
| May 18, 5:52 PM EDT | Flash Flood Warning | CTP | Centre, Clearfield, Clinton, Juniata, Mifflin, Snyder and 1 more | 3 hr |
| May 18, 6:31 PM EDT | Flash Flood Warning | CTP | Dauphin, Northumberland, Snyder | 3 hr |
| May 18, 6:32 PM EDT | Special Weather Statement | CTP | Dauphin, Snyder, Union | 43 min |
| May 18, 6:52 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clinton, Lycoming, Snyder, Union | 38 min |
| May 18, 7:47 PM EDT | Areal Flood Advisory | CTP | Cameron, Clearfield, Clinton, Elk, McKean, Potter and 1 more | 3 hr |
| May 18, 7:57 PM EDT | Areal Flood Advisory | CTP | Centre, Clinton, Lycoming, Snyder, Union | 3 hr |
Nearby
Tornado Warnings in Pennsylvania, 2011Every tornado warning in 2011Tornadoes in 2011
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.