Alert archive / Pennsylvania / Tornado Warnings in 2018

Tornado Warning 10, NWS State College, PA

June 13, 2018Sullivan County, Pennsylvania

NWS State College, PA issued this tornado warning at Jun 13, 2018, 9:21 PM EDT for Sullivan County, Pennsylvania. It was in force for 9 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
Jun 13, 2018, 9:21 PM EDT (01:21 UTC)
Expired
Jun 13, 2018, 9:30 PM EDT
In force
9 min
Issued by
NWS State College, PA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Sullivan County, PA

The radar

The Binghamton radar (KBGM), 100 km from the middle of the area, began a volume at 01:24 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.

IssuedProductOfficeLasted
Jun 13, 6:33 PM EDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Albany, NY (KALY), launched 00:00Z, 1.4 hours before the alert went out and 255 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, Albany, NY at 00:00Z on 2018-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 140 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, Albany, NY at 00:00Z on 2018-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 276 square meters per square second.1939587897Sfc1 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
140 J/kg
Mixed-layer CIN
-179 J/kg
Mixed-layer LCL
876 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
276 m²/s²
0-3 km storm-relative helicity
367 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

921 
WFUS51 KCTP 140121
TORCTP
PAC113-140130-
/O.NEW.KCTP.TO.W.0010.180614T0121Z-180614T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service State College PA
921 PM EDT WED JUN 13 2018

The National Weather Service in State College PA has issued a

* Tornado Warning for...
  Southeastern Sullivan County in north central Pennsylvania...

* Until 930 PM EDT.
    
* At 921 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Ricketts Glen State Park, moving southeast at 30
  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 tornadic thunderstorm will remain over mainly rural areas of
  southeastern Sullivan County.

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 4131 7631 4131 7634 4135 7641 4140 7635
      4138 7628
TIME...MOT...LOC 0121Z 296DEG 25KT 4135 7635 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

DeVoir

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 13, 8:07 PM EDTSpecial Weather StatementCTPBlair, Cambria23 min
Jun 13, 8:21 PM EDTSevere Thunderstorm WarningCTPBlair, Cambria39 min
Jun 13, 8:22 PM EDTSevere Thunderstorm WarningCTPColumbia, Lycoming, Sullivan68 min
Jun 13, 8:28 PM EDTTornado WarningCTPBlair, Cambria32 min
Jun 13, 10:08 PM EDTSpecial Weather StatementCTPBedford37 min
Jun 13, 10:34 PM EDTSpecial Weather StatementCTPFulton41 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.