Alert archive / Pennsylvania / Tornado Warnings in 2018

Tornado Warning 9, NWS State College, PA

June 13, 2018Blair County, Cambria County, Pennsylvania

NWS State College, PA issued this tornado warning at Jun 13, 2018, 8:28 PM EDT for Blair County, Cambria County, Pennsylvania. It was in force for 32 min. 3 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: Jun 13, 2018, 8:28 PM EDT (00:28 UTC)
Expired: Jun 13, 2018, 9:00 PM EDT
In force: 32 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Blair County, PA, Cambria County, PA

The radar

The State College radar (KCCX), 67 km from the middle of the area, began a volume at 00:28 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

Time	Report	Where	Remark
Jun 13, 8:44 PM EDT	TSTM WND DMG	1 Ene Loretto, PA	SEVERAL TREES DOWN OR SNAPPED ALONG SYBERTON ROAD EAST OF LORETTO.
Jun 13, 8:44 PM EDT	TORNADO	3 Nw Gallitzin, PA	EF-1 TORNADO CONFIRMED BY NWS STORM SURVEY.
Jun 13, 8:47 PM EDT	TSTM WND DMG	1 Nw Dysertown, PA	ONE DOZEN LARGE TREES DOWN ALONG ROUTE 22 NEAR THE ROUTE 53 EXIT

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.

Issued	Product	Office	Lasted
Jun 13, 6:33 PM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Pittsburgh, PA (KAGC), launched 00:00Z, 0.5 hours before the alert went out and 129 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2125 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 834 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 163 m²/s²
0-3 km storm-relative helicity: 263 m²/s²
Significant tornado parameter: 1.7
Supercell composite: 10.5

Open this sounding in Storm Lab

The text

As transmitted.

640 
WFUS51 KCTP 140028
TORCTP
PAC013-021-140100-
/O.NEW.KCTP.TO.W.0009.180614T0028Z-180614T0100Z/

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

The National Weather Service in State College PA has issued a

* Tornado Warning for...
  Central Blair County in central Pennsylvania...
  Central Cambria County in central Pennsylvania...

* Until 900 PM EDT.
    
* At 827 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Carrolltown, moving southeast 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...
  Ebensburg and Patton around 830 PM EDT.
  Loretto around 840 PM EDT.
  Gallitzin, Horseshoe Curve, Cresson, Sankertown and Lilly around 
  850 PM EDT.
  Hollidaysburg, Altoona, Duncansville, Lakemont, Roaring Spring and 
  Canoe Creek State Park around 900 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Colver, Tunnelhill, Chest Springs, East Freedom, Ashville, Newry,
Peoples Natural Gas Field, Allegheny Portage Railroad National
Historic Site, Mt. Aloysius College and Lakemont Park And Island
Waterpark.

This includes Interstate 99 from mile markers 18 to 37.

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 4069 7875 4052 7825 4030 7842 4030 7844
      4054 7887
TIME...MOT...LOC 0027Z 300DEG 29KT 4058 7873 

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

$$

Tyburski

2 follow-up statements

700 
WWUS51 KCTP 140042
SVSCTP

Severe Weather Statement
National Weather Service State College PA
842 PM EDT WED JUN 13 2018

PAC013-021-140100-
/O.CON.KCTP.TO.W.0009.000000T0000Z-180614T0100Z/
Blair PA-Cambria PA-
842 PM EDT WED JUN 13 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM EDT FOR
SOUTHWESTERN BLAIR AND CENTRAL CAMBRIA COUNTIES...
    
At 841 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Loretto, moving southeast 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...
  Horseshoe Curve around 850 PM EDT.
  Hollidaysburg, Duncansville and Lakemont around 900 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Tunnelhill, Chest Springs, East Freedom, Ashville, Newry, Peoples
Natural Gas Field, Allegheny Portage Railroad National Historic Site,
Mt. Aloysius College, Lakemont Park And Island Waterpark and Penn
State Altoona.

This includes Interstate 99 from mile markers 18 to 36.

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 4048 7876 4063 7865 4051 7825 4030 7842
      4030 7844
TIME...MOT...LOC 0041Z 298DEG 29KT 4052 7862 

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

$$

Tyburski

985 
WWUS51 KCTP 140056
SVSCTP

Severe Weather Statement
National Weather Service State College PA
856 PM EDT WED JUN 13 2018

PAC013-021-140105-
/O.EXP.KCTP.TO.W.0009.000000T0000Z-180614T0100Z/
Blair PA-Cambria PA-
856 PM EDT WED JUN 13 2018

...THE TORNADO WARNING FOR SOUTHWESTERN BLAIR AND CENTRAL CAMBRIA
COUNTIES WILL EXPIRE AT 900 PM EDT...
                
The storm which prompted the tornado warning has weakened, and no 
longer appears capable of producing a tornado. Therefore, the 
tornado warning will be allowed to expire. However gusty winds are 
still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
south central and central Pennsylvania.

LAT...LON 4048 7876 4063 7865 4051 7825 4030 7842
      4030 7844
TIME...MOT...LOC 0055Z 300DEG 29KT 4046 7849 

$$

DeVoir

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 8:07 PM EDT	Special Weather Statement	CTP	Blair, Cambria	23 min
Jun 13, 8:21 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria	39 min
Jun 13, 8:22 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Sullivan	68 min
Jun 13, 9:21 PM EDT	Tornado Warning	CTP	Sullivan	9 min
Jun 13, 10:08 PM EDT	Special Weather Statement	CTP	Bedford	37 min
Jun 13, 10:34 PM EDT	Special Weather Statement	CTP	Fulton	41 min

Nearby

Tornado Warnings in Pennsylvania, 2018 Every tornado warning in 2018 Tornadoes 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.