Alert archive / Pennsylvania / Tornado Warnings in 2018

Tornado Warning 20, NWS State College, PA

October 2, 2018Clearfield County, Pennsylvania

NWS State College, PA issued this tornado warning at Oct 2, 2018, 5:32 PM EDT for Clearfield County, Pennsylvania. It was in force for 58 min. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Oct 2, 2018, 5:32 PM EDT (21:32 UTC)
Expired
Oct 2, 2018, 6:30 PM EDT
In force
58 min
Issued by
NWS State College, PA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

County Clearfield County, PA

The radar

The State College radar (KCCX), 42 km from the middle of the area, began a volume at 21:32 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

TimeReportWhereRemark
Oct 2, 5:45 PM EDTTSTM WND DMG3 E Dubois, PATREES DOWN ALONG SHER DE LIN ROAD NEAR I-80.
Oct 2, 5:51 PM EDTHAIL 0.75Rockton, PADIME-SIZED HAIL NEAR ROCKTON MOUNTAIN.
Oct 2, 6:00 PM EDTHAIL 1.75Falls Creek, PAGOLF BALL SIZED HAIL REPORTED AT 3RD ST. AND OSBORNE.
Oct 2, 6:05 PM EDTHAIL 0.751 E Dubois, PA

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Oct 2, 2:55 PM EDTTornado WatchSPC8 hr

The nearest sounding before it

Pittsburgh, PA (KAGC), launched 12:00Z, 9.5 hours before the alert went out and 158 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-pSkew-T log-p diagram, Pittsburgh, PA at 12:00Z on 2018-10-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 779 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2018-10-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 120 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
779 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
821 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
120 m²/s²
0-3 km storm-relative helicity
133 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.7

Open this sounding in Storm Lab

The text

As transmitted.

587 
WFUS51 KCTP 022132
TORCTP
PAC033-022230-
/O.NEW.KCTP.TO.W.0020.181002T2132Z-181002T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service State College PA
532 PM EDT TUE OCT 2 2018

The National Weather Service in State College PA has issued a

* Tornado Warning for...
  Central Clearfield County in central Pennsylvania...

* Until 630 PM EDT.
    
* At 532 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Sandy, moving east at 35 mph.

  HAZARD...Tornado and quarter size hail.

  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...
  Rockton around 550 PM EDT.
  S.B. Elliot State Park and Curwensville around 600 PM EDT.
  Clearfield, Plymptonville and Hyde around 610 PM EDT.
  Lecontes Mills and Woodland around 620 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Troutville, Wallaceton, Morrisdale, Kylertown, Treasure Lake,
Clearfield-Lawrence Airport, Penn State Dubois and Grassflat.

For those driving on Interstate 80, this includes areas between the
Dubois and Snow Shoe exits, specifically from mile markers 97 to 134.

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.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

&&

LAT...LON 4117 7878 4112 7809 4111 7811 4105 7809
      4092 7819 4102 7880 4114 7880
TIME...MOT...LOC 2132Z 278DEG 28KT 4112 7882 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Lambert
1 follow-up statement
520 
WWUS51 KCTP 022212
SVSCTP

Severe Weather Statement
National Weather Service State College PA
612 PM EDT TUE OCT 2 2018

PAC033-022230-
/O.CON.KCTP.TO.W.0020.000000T0000Z-181002T2230Z/
Clearfield PA-
612 PM EDT TUE OCT 2 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM EDT FOR CENTRAL
CLEARFIELD COUNTY...
    
At 605 PM EDT, 2 tornado producing storms were located along a line 
extending from near Plymptonville to near Reynoldsville, moving east 
southeast at 35 mph.

HAZARD...Damaging tornado and ping pong ball size hail.

SOURCE...Law enforcement confirmed tornado.

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.

These tornadic storms will be near...
  Clearfield, Plymptonville, Hyde and Curwensville around 610 PM 
  EDT.
  Woodland and Lecontes Mills around 620 PM EDT.
  S.B. Elliot State Park around 630 PM EDT.

Other locations impacted by these tornadic storms include Troutville,
Wallaceton, Morrisdale, Kylertown, Treasure Lake, Clearfield-Lawrence
Airport, Penn State Dubois and Grassflat.

For those driving on Interstate 80, this includes areas between the
Dubois and Snow Shoe exits, specifically from mile markers 97 to 134.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground near Dubois and the tornado 
will pass close to Rocton between 620 pm and 630 pm.
 
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.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

&&

LAT...LON 4117 7878 4112 7809 4111 7811 4105 7809
      4092 7819 4102 7880 4114 7880
TIME...MOT...LOC 2205Z 282DEG 29KT 4105 7851 4110 7885 

TORNADO...OBSERVED
HAIL...1.50IN

$$

Lambert

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 2, 11:07 AM EDTSpecial Weather StatementCTPMcKean38 min
Oct 2, 1:12 PM EDTFlash Flood WatchCTPCentre, Clearfield, Clinton, Columbia, Lycoming, McKean and 7 more9 hr
Oct 2, 1:20 PM EDTAreal Flood AdvisoryCTPPotter3 hr
Oct 2, 1:59 PM EDTSpecial Weather StatementCTPTioga61 min
Oct 2, 2:48 PM EDTSpecial Weather StatementCTPTioga42 min
Oct 2, 3:03 PM EDTSevere Thunderstorm WarningCTPTioga42 min
Oct 2, 3:11 PM EDTSevere Thunderstorm WarningCTPWarren79 min
Oct 2, 3:24 PM EDTSevere Thunderstorm WarningCTPPotter, Tioga96 min
Oct 2, 3:27 PM EDTSpecial Weather StatementCTPLycoming33 min
Oct 2, 3:38 PM EDTTornado WarningCTPWarren67 min
Oct 2, 3:48 PM EDTSevere Thunderstorm WarningCTPColumbia, Lycoming, Montour, Northumberland, Sullivan57 min
Oct 2, 3:51 PM EDTTornado WarningCTPColumbia, Lycoming, Montour, Northumberland54 min
Oct 2, 3:59 PM EDTAreal Flood AdvisoryCTPPotter, Tioga3 hr
Oct 2, 4:05 PM EDTSpecial Weather StatementCTPMcKean55 min
Oct 2, 4:06 PM EDTAreal Flood AdvisoryCTPWarren3 hr
Oct 2, 4:15 PM EDTTornado WarningCTPPotter, Tioga45 min
Oct 2, 4:19 PM EDTSevere Thunderstorm WarningCTPFranklin, Huntingdon56 min
Oct 2, 4:26 PM EDTSevere Thunderstorm WarningCTPCameron, Clearfield, Elk64 min
Oct 2, 4:26 PM EDTSevere Thunderstorm WarningCTPElk49 min
Oct 2, 4:26 PM EDTTornado WarningCTPColumbia, Lycoming, Montour49 min
Oct 2, 4:42 PM EDTTornado WarningCTPClearfield63 min
Oct 2, 4:48 PM EDTTornado Warning Tornado observedCTPLycoming, Tioga42 min
Oct 2, 4:49 PM EDTSpecial Weather StatementCTPSullivan26 min
Oct 2, 4:54 PM EDTSpecial Weather StatementCTPTioga36 min
Oct 2, 5:02 PM EDTTornado WarningCTPClearfield, Elk43 min
Oct 2, 5:17 PM EDTSevere Thunderstorm WarningCTPCumberland58 min
Oct 2, 5:24 PM EDTSevere Thunderstorm WarningCTPLycoming, Tioga36 min
Oct 2, 5:27 PM EDTSevere Thunderstorm WarningCTPCameron, Centre, Clearfield, Clinton, Elk, Potter93 min
Oct 2, 5:28 PM EDTSevere Thunderstorm WarningCTPLycoming, Sullivan34 min
Oct 2, 5:33 PM EDTTornado WarningCTPLycoming, Tioga42 min
Oct 2, 5:39 PM EDTTornado WarningCTPLycoming, Sullivan66 min
Oct 2, 5:56 PM EDTAreal Flood AdvisoryCTPLycoming, Tioga3 hr
Oct 2, 6:06 PM EDTSevere Thunderstorm WarningCTPSomerset32 min
Oct 2, 6:19 PM EDTAreal Flood AdvisoryCTPClearfield, Elk3 hr
Oct 2, 6:25 PM EDTAreal Flood AdvisoryCTPLycoming, Sullivan3 hr
Oct 2, 6:37 PM EDTSevere Thunderstorm WarningCTPCentre, Clinton, Union53 min
Oct 2, 6:39 PM EDTSevere Thunderstorm WarningCTPColumbia, Sullivan21 min
Oct 2, 7:00 PM EDTSevere Thunderstorm WarningCTPCentre, Clearfield90 min
Oct 2, 7:13 PM EDTAreal Flood AdvisoryCTPCameron, Centre, Clinton3 hr
Oct 2, 7:44 PM EDTSpecial Weather StatementCTPNorthumberland31 min
Oct 2, 7:53 PM EDTFlash Flood WarningCTPColumbia, Lycoming, Sullivan3 hr
Oct 2, 7:57 PM EDTSpecial Weather StatementCTPSnyder33 min
Oct 2, 7:59 PM EDTFlash Flood WarningCTPCentre, Clearfield3 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.