Alert archive / Pennsylvania / Tornado Warnings in 2018
Tornado Warning 11, NWS State College, PA
NWS State College, PA issued this tornado warning at Aug 21, 2018, 2:55 PM EDT for Bedford County, Somerset County, Pennsylvania. It was in force for 50 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
- Aug 21, 2018, 2:55 PM EDT (18:55 UTC)
- Expired
- Aug 21, 2018, 3:45 PM EDT
- In force
- 50 min
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Bedford County, PA, Somerset County, PA
The radar
The State College radar (KCCX), 131 km from the middle of the area, began a volume at 18:55 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 |
|---|---|---|---|
| Aug 21, 2:41 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Pittsburgh, PA (KAGC), launched 12:00Z, 6.9 hours before the alert went out and 134 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
- 340 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 811 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 211 m²/s²
- 0-3 km storm-relative helicity
- 223 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.5
The text
As transmitted.
988
WFUS51 KCTP 211855
TORCTP
PAC009-111-211945-
/O.NEW.KCTP.TO.W.0011.180821T1855Z-180821T1945Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service State College PA
255 PM EDT TUE AUG 21 2018
The National Weather Service in State College PA has issued a
* Tornado Warning for...
Western Bedford County in south central Pennsylvania...
Southeastern Somerset County in south central Pennsylvania...
* Until 345 PM EDT.
* At 255 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Berlin, moving northeast at 35 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This dangerous storm will be near...
Buffalo Mills around 320 PM EDT.
Bedford, Cessna, St. Clairsville and Osterburg around 340 PM EDT.
Other locations impacted by this tornadic thunderstorm include
Callimont, Schellsburg, New Baltimore, Rainsburg, Hyndman, New Paris,
Manns Choice, Garrett and Indian Lake.
This includes the following Interstates...
The Pennsylvania Turnpike from mile markers 118 to 152.
Interstate 99 from mile markers 0 to 9.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3975 7897 3990 7909 4023 7851 3980 7832
3978 7833
TIME...MOT...LOC 1855Z 238DEG 30KT 3987 7894
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
Tyburski1 follow-up statement
338
WWUS51 KCTP 211927
SVSCTP
Severe Weather Statement
National Weather Service State College PA
327 PM EDT TUE AUG 21 2018
PAC111-211936-
/O.CAN.KCTP.TO.W.0011.000000T0000Z-180821T1945Z/
Somerset PA-
327 PM EDT TUE AUG 21 2018
...THE TORNADO WARNING FOR SOUTHEASTERN SOMERSET COUNTY IS
CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
south central Pennsylvania.
LAT...LON 3983 7875 4006 7876 4011 7872 4023 7851
3980 7832 3978 7833 3976 7879
TIME...MOT...LOC 1926Z 238DEG 30KT 3999 7869
$$
PAC009-211945-
/O.CON.KCTP.TO.W.0011.000000T0000Z-180821T1945Z/
Bedford PA-
327 PM EDT TUE AUG 21 2018
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 345 PM EDT FOR WESTERN
BEDFORD COUNTY...
At 326 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Buffalo Mills, moving northeast at 35 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Bedford, Cessna and St. Clairsville around 340 PM EDT.
Other locations impacted by this tornadic thunderstorm include
Schellsburg, Hyndman, Rainsburg, New Paris and Manns Choice.
This includes the following Interstates...
The Pennsylvania Turnpike from mile markers 131 to 152.
Interstate 99 from mile markers 0 to 9.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3983 7875 4006 7876 4011 7872 4023 7851
3980 7832 3978 7833 3976 7879
TIME...MOT...LOC 1926Z 238DEG 30KT 3999 7869
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
RXRThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 2:04 PM EDT | Severe Thunderstorm Warning | CTP | Somerset | 56 min |
| Aug 21, 2:16 PM EDT | Severe Thunderstorm Warning | CTP | Somerset | 59 min |
| Aug 21, 2:22 PM EDT | Severe Thunderstorm Warning | CTP | Cambria, Somerset | 53 min |
| Aug 21, 3:12 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Fulton, Somerset | 63 min |
| Aug 21, 3:37 PM EDT | Special Weather Statement | CTP | Elk | 23 min |
| Aug 21, 3:47 PM EDT | Special Weather Statement | CTP | Bedford | 28 min |
| Aug 21, 4:04 PM EDT | Special Weather Statement | CTP | Cameron, Elk | 41 min |
| Aug 21, 4:15 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Franklin, Fulton, Huntingdon | 45 min |
| Aug 21, 4:48 PM EDT | Special Weather Statement | CTP | Elk | 27 min |
| Aug 21, 5:01 PM EDT | Special Weather Statement | CTP | Franklin | 44 min |
| Aug 21, 5:14 PM EDT | Special Weather Statement | CTP | Warren | 46 min |
| Aug 21, 5:36 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 54 min |
| Aug 21, 6:38 PM EDT | Special Weather Statement | CTP | Warren | 37 min |
| Aug 21, 6:40 PM EDT | Special Weather Statement | CTP | Potter | 35 min |
| Aug 21, 6:41 PM EDT | Special Weather Statement | CTP | Adams | 34 min |
| Aug 21, 7:24 PM EDT | Special Weather Statement | CTP | Adams | 36 min |
| Aug 21, 7:24 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Warren | 66 min |
Nearby
Tornado Warnings in Pennsylvania, 2018Every tornado warning in 2018Tornadoes in 2018
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.