Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 9, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Apr 16, 2011, 5:59 PM EDT for Adams County, Cumberland County, Franklin County, Pennsylvania. It was in force for 46 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
- Apr 16, 2011, 5:59 PM EDT (21:59 UTC)
- Expired
- Apr 16, 2011, 6:45 PM EDT
- In force
- 46 min
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
Counties Adams County, PA, Cumberland County, PA, Franklin County, PA
The radar
The State College radar (KCCX), 111 km from the middle of the area, began a volume at 22:00 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 |
|---|---|---|---|
| Apr 16, 4:41 PM EDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 10.0 hours before the alert went out and 119 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 533 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 473 m²/s²
- 0-3 km storm-relative helicity
- 699 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
567 WUUS51 KCTP 162159 SVRCTP PAC001-041-055-162245- /O.NEW.KCTP.SV.W.0009.110416T2159Z-110416T2245Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 559 PM EDT SAT APR 16 2011 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WESTERN ADAMS COUNTY IN SOUTH CENTRAL PENNSYLVANIA... WESTERN CUMBERLAND COUNTY IN SOUTH CENTRAL PENNSYLVANIA... EASTERN FRANKLIN COUNTY IN SOUTH CENTRAL PENNSYLVANIA... * UNTIL 645 PM EDT * AT 553 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A SEVERE THUNDERSTORM ON DOPPLER RADAR. THE STORM WAS 10 MILES SOUTH OF GREENCASTLE...MOVING NORTHEAST AT 60 MPH. THIS STORM IS CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... WAYNESBORO AND ROUZERVILLE AROUND 605 PM EDT... MONT ALTO AND MARION AROUND 610 PM EDT... FAYETTEVILLE AND CHAMBERSBURG AROUND 615 PM EDT... SCOTLAND AND CASHTOWN AROUND 620 PM EDT... SHIPPENSBURG AROUND 625 PM EDT... WALNUT BOTTOM AND PINE GROVE FURNACE AROUND 630 PM EDT... THIS WILL IMPACT THE FOLLOWING CENTRAL PENNSYLVANIA INTERSTATES...THE PENNSYLVANIA TURNPIKE BETWEEN MILE MARKERS 202 AND 228...I-81 BETWEEN MILE MARKERS 1 AND 52. THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 11...ROUTE 15...ROUTE 30...STATE ROAD 97. PRECAUTIONARY/PREPAREDNESS ACTIONS... A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY INSIDE A STRONG BUILDING...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. VERY HEAVY RAIN WILL ALSO OCCUR WITH THIS SEVERE THUNDERSTORM...WHICH COULD FLOOD LOW LYING AREAS QUICKLY AND COVER ROADS WITH WATER. DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. SEVERE THUNDERSTORMS PRODUCE DAMAGE. MOVE INSIDE A PERMANENT BUILDING NOW TO BE SAFE FROM STRONG WIND GUSTS. PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL WEATHER SERVICE BY CALLING TOLL FREE...1 8 7 7 6 3 3 6 7 7 2. A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT SATURDAY EVENING FOR SOUTH CENTRAL PENNSYLVANIA. && LAT...LON 4018 7760 4030 7711 3972 7716 3972 7782 TIME...MOT...LOC 2157Z 212DEG 52KT 3966 7770 $$ FORECASTER: DANGELO
2 follow-up statements
773
WWUS51 KCTP 162218
SVSCTP
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
618 PM EDT SAT APR 16 2011
PAC001-041-055-162245-
/O.CON.KCTP.SV.W.0009.000000T0000Z-110416T2245Z/
ADAMS PA-CUMBERLAND PA-FRANKLIN PA-
618 PM EDT SAT APR 16 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR SOUTHEASTERN FRANKLIN...CENTRAL CUMBERLAND AND WESTERN ADAMS
COUNTIES...
AT 614 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM BLOSERVILLE TO ARENDTSVILLE TO
WAYNESBORO...MOVING EAST AT 60 MPH.
* LOCATIONS IMPACTED INCLUDE...
GERMANTOWN...
CARLISLE...
BIGLERVILLE...
BOILING SPRINGS...
THIS WILL IMPACT THE FOLLOWING CENTRAL PENNSYLVANIA INTERSTATES...THE
PENNSYLVANIA TURNPIKE BETWEEN MILE MARKERS 213 AND 228...I-81 BETWEEN
MILE MARKERS 31 AND 52.
THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 11...ROUTE
15...ROUTE 30...STATE ROAD 97.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. IF A TORNADO IS
SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY INSIDE A STRONG
BUILDING...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
VERY HEAVY RAIN WILL ALSO OCCUR WITH THIS SEVERE THUNDERSTORM...WHICH
COULD FLOOD LOW LYING AREAS QUICKLY AND COVER ROADS WITH WATER. DO
NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
SEVERE THUNDERSTORMS PRODUCE DAMAGE. MOVE INSIDE A PERMANENT BUILDING
NOW TO BE SAFE FROM STRONG WIND GUSTS.
PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE...1 8 7 7 6 3 3 6 7 7 2.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT SATURDAY EVENING
FOR SOUTH CENTRAL PENNSYLVANIA.
&&
LAT...LON 4023 7740 4030 7711 3972 7716 3972 7758
TIME...MOT...LOC 2217Z 212DEG 52KT 4027 7730 4000 7736
3976 7748
$$
FORECASTER: DANGELO475
WWUS51 KCTP 162234
SVSCTP
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
634 PM EDT SAT APR 16 2011
PAC055-162244-
/O.CAN.KCTP.SV.W.0009.000000T0000Z-110416T2245Z/
FRANKLIN PA-
634 PM EDT SAT APR 16 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN FRANKLIN COUNTY
IS CANCELLED...
THE STORM HAS MOVED TO THE EAST...THEREFORE THE SEVERE
THUNDERSTORM WARNING HAS BEEN CANCELLED.
PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE...1 8 7 7 6 3 3 6 7 7 2.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT SATURDAY EVENING
FOR SOUTH CENTRAL PENNSYLVANIA.
LAT...LON 3990 7743 4027 7724 4030 7711 3972 7716
3972 7743
TIME...MOT...LOC 2234Z 248DEG 28KT 4029 7712 3994 7728
3974 7730
$$
PAC001-041-162245-
/O.CON.KCTP.SV.W.0009.000000T0000Z-110416T2245Z/
ADAMS PA-CUMBERLAND PA-
634 PM EDT SAT APR 16 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR CENTRAL CUMBERLAND AND WESTERN ADAMS COUNTIES...
AT 632 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM CARLISLE SPRINGS TO ARENDTSVILLE TO
CARROLL VALLEY...MOVING EAST AT 30 MPH.
* LOCATIONS IMPACTED INCLUDE...
GETTYSBURG...
GERMANTOWN...
THIS WILL IMPACT THE FOLLOWING CENTRAL PENNSYLVANIA INTERSTATES...THE
PENNSYLVANIA TURNPIKE BETWEEN MILE MARKERS 220 AND 228...I-81 BETWEEN
MILE MARKERS 41 AND 52.
THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 11...ROUTE
15...ROUTE 30...STATE ROAD 97.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE...1 8 7 7 6 3 3 6 7 7 2.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT SATURDAY EVENING
FOR SOUTH CENTRAL PENNSYLVANIA.
&&
LAT...LON 3990 7743 4027 7724 4030 7711 3972 7716
3972 7743
TIME...MOT...LOC 2234Z 248DEG 28KT 4029 7712 3994 7728
3974 7730
$$
FORECASTER: DANGELOThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 16, 2:52 PM EDT | Areal Flood Advisory | CTP | Bedford, Blair, Cambria, Centre, Clearfield, Fulton and 4 more | 3 hr |
| Apr 16, 3:42 PM EDT | River Flood Warning | CTP | Huntingdon | 27 hr |
| Apr 16, 3:53 PM EDT | Special Weather Statement | CTP | Adams | 37 min |
| Apr 16, 4:01 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, Dauphin, Franklin, Lancaster, Perry and 1 more | 59 min |
| Apr 16, 4:39 PM EDT | Areal Flood Warning | CTP | Adams, Centre, Clinton, Columbia, Cumberland, Dauphin and 17 more | 20 hr |
| Apr 16, 4:50 PM EDT | Flash Flood Warning | CTP | Adams | 5 hr |
| Apr 16, 4:53 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Franklin, Fulton, Perry | 37 min |
| Apr 16, 5:24 PM EDT | Flash Flood Warning | CTP | Cumberland | 5 hr |
| Apr 16, 5:38 PM EDT | Flash Flood Warning | CTP | Dauphin, Lancaster, Lebanon, York | 7 hr |
| Apr 16, 6:04 PM EDT | Flash Flood Warning | CTP | Franklin | 5 hr |
| Apr 16, 6:27 PM EDT | River Flood Warning | CTP | Centre, Snyder, Union | 8 hr |
| Apr 16, 6:27 PM EDT | River Flood Warning | CTP | Cumberland | 50 hr |
| Apr 16, 6:27 PM EDT | River Flood Warning | CTP | Cumberland, York | 44 hr |
| Apr 16, 6:31 PM EDT | Special Weather Statement | CTP | Dauphin | 44 min |
| Apr 16, 6:46 PM EDT | Special Weather Statement | CTP | Adams, Lancaster, York | 29 min |
| Apr 16, 7:21 PM EDT | Special Weather Statement | CTP | Dauphin | 39 min |
| Apr 16, 7:27 PM EDT | Flash Flood Warning | CTP | Schuylkill | 5 hr |
| Apr 16, 7:47 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Dauphin, Lancaster, York | 43 min |
| Apr 16, 7:52 PM EDT | River Flood Warning | CTP | Perry | 19 hr |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2011Every severe thunderstorm warning 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.