Alert archive / Pennsylvania / Tornado Warnings in 2020

Tornado Warning 3, NWS State College, PA

August 28, 2020Adams County, Cumberland County, Pennsylvania

NWS State College, PA issued this tornado warning at Aug 28, 2020, 2:22 PM EDT for Adams County, Cumberland County, Pennsylvania. It was in force for 38 min. 1 report 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: Aug 28, 2020, 2:22 PM EDT (18:22 UTC)
Expired: Aug 28, 2020, 3:00 PM EDT
In force: 38 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Adams County, PA, Cumberland County, PA

The radar

The State College radar (KCCX), 107 km from the middle of the area, began a volume at 18:25 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
Aug 28, 2:38 PM EDT	TSTM WND DMG	3 E Walnut Bottom, PA	TREES DOWN ON WIRES.

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
Aug 28, 1:37 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 6.4 hours before the alert went out and 127 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: 511 J/kg
Mixed-layer CIN: -119 J/kg
Mixed-layer LCL: 1109 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 102 m²/s²
0-3 km storm-relative helicity: 50 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

349 
WFUS51 KCTP 281822
TORCTP
PAC001-041-281900-
/O.NEW.KCTP.TO.W.0003.200828T1822Z-200828T1900Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service State College PA
222 PM EDT Fri Aug 28 2020

The National Weather Service in State College PA has issued a

* Tornado Warning for...
  Northeastern Adams County in south central Pennsylvania...
  Southwestern Cumberland County in south central Pennsylvania...

* Until 300 PM EDT.
    
* At 221 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Newville, moving southeast at 40 mph.

  HAZARD...Tornado and quarter size hail.

  SOURCE...Radar indicated rotation.

  IMPACT...Tree damage will occur. Damage to roofs, windows, and 
           vehicles is likely. Flying debris will be dangerous to 
           those caught without shelter. Mobile homes will be 
           damaged or destroyed.

* This dangerous storm will be near...
  Walnut Bottom around 230 PM EDT.
  Pine Grove Furnace and Mount Holly Springs around 240 PM EDT.
  Aspers around 250 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Heidlersburg, Idaville, York Springs, Gardners, Bendersville and
Shippensburg University.

This includes the following Interstates...
 The Pennsylvania Turnpike from mile markers 204 to 212.
 Interstate 81 from mile markers 28 to 41.

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 4007 7754 4009 7754 4010 7756 4012 7756
      4013 7758 4019 7757 4022 7752 4012 7707
      4007 7714 4006 7709 4002 7706 3991 7712
TIME...MOT...LOC 1821Z 293DEG 37KT 4015 7751 

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

$$

Lambert/Travis

1 follow-up statement

267 
WWUS51 KCTP 281843
SVSCTP

Severe Weather Statement
National Weather Service State College PA
243 PM EDT Fri Aug 28 2020

PAC001-041-281900-
/O.CON.KCTP.TO.W.0003.000000T0000Z-200828T1900Z/
Adams PA-Cumberland PA-
243 PM EDT Fri Aug 28 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 300 PM EDT FOR
NORTHEASTERN ADAMS AND SOUTH CENTRAL CUMBERLAND COUNTIES...
    
At 242 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Pine Grove Furnace, moving east at 30 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Radar indicated rotation.

IMPACT...Tree damage will occur. Damage to roofs, windows, and 
         vehicles is likely. Flying debris will be dangerous to 
         those caught without shelter. Mobile homes will be damaged 
         or destroyed.

This dangerous storm will be near...
  Mount Holly Springs and Aspers around 250 PM EDT.

Other locations impacted by this tornadic thunderstorm include York
Springs, Gardners, Heidlersburg, Bendersville and Idaville.

This includes Interstate 81 from mile markers 36 to 40.

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 4001 7736 4005 7737 4007 7738 4009 7738
      4013 7737 4016 7730 4012 7707 4007 7714
      4006 7709 4002 7706 3991 7712
TIME...MOT...LOC 1842Z 283DEG 28KT 4010 7729 

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

$$

Lambert

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 27, 8:05 PM EDT	Severe Thunderstorm Warning	CTP	Somerset	70 min
Aug 28, 11:00 AM EDT	Special Weather Statement	CTP	Clearfield	45 min
Aug 28, 11:41 AM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Clearfield	64 min
Aug 28, 12:28 PM EDT	Special Weather Statement	CTP	Somerset	47 min
Aug 28, 12:40 PM EDT	Special Weather Statement	CTP	Centre	65 min
Aug 28, 12:46 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Huntingdon, Somerset	59 min
Aug 28, 1:09 PM EDT	Severe Thunderstorm Warning	CTP	Huntingdon, Mifflin	51 min
Aug 28, 1:15 PM EDT	Tornado Warning	CTP	Huntingdon, Mifflin	30 min
Aug 28, 1:25 PM EDT	Special Weather Statement	CTP	Somerset	35 min
Aug 28, 1:29 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Franklin, Fulton, Huntingdon, Somerset	61 min
Aug 28, 1:35 PM EDT	Special Weather Statement	CTP	Montour, Northumberland	25 min
Aug 28, 1:35 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Mifflin, Perry	55 min
Aug 28, 1:48 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Northumberland, Schuylkill	42 min
Aug 28, 1:52 PM EDT	Areal Flood Advisory	CTP	Cambria	113 min
Aug 28, 2:16 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Franklin, York	59 min
Aug 28, 2:28 PM EDT	Special Weather Statement	CTP	Dauphin, Perry	47 min
Aug 28, 2:30 PM EDT	Special Weather Statement	CTP	Schuylkill	45 min
Aug 28, 2:34 PM EDT	Special Weather Statement	CTP	Lebanon	26 min
Aug 28, 2:53 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, Lebanon	52 min
Aug 28, 3:00 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Franklin, York	60 min
Aug 28, 3:35 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	54 min

Nearby

Tornado Warnings in Pennsylvania, 2020 Every tornado warning in 2020 Tornadoes in 2020

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.