Alert archive / Pennsylvania / Tornado Warnings in 2020

Tornado Warning 2, NWS State College, PA

August 28, 2020Huntingdon County, Mifflin County, Pennsylvania

NWS State College, PA issued this tornado warning at Aug 28, 2020, 1:15 PM EDT for Huntingdon County, Mifflin County, Pennsylvania. It was in force for 30 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: Aug 28, 2020, 1:15 PM EDT (17:15 UTC)
Expired: Aug 28, 2020, 1:45 PM EDT
In force: 30 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Tornado: Radar indicated

Counties Huntingdon County, PA, Mifflin County, PA

The radar

The State College radar (KCCX), 32 km from the middle of the area, began a volume at 17:13 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, 1:30 PM EDT	TSTM WND DMG	4 Ene Mcalevys Fort, PA	6 TO 8 TREES DOWN REPORTED AT GREENWOD FURNACE.
Aug 28, 1:30 PM EDT	TSTM WND DMG	4 Ene Mcalevys Fort, PA	CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 4 ENE MCALEVYS FORT. 6 TO 8 TREES DOWN REPORTED AT GREENWOOD FURNACE.
Aug 28, 1:50 PM EDT	TSTM WND DMG	3 Ssw Pine Grove Mills, PA	SNAPPED POWER POLES ON ROUTE 26.

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

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 5.3 hours before the alert went out and 193 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: 922 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 836 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 188 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 2.9

Open this sounding in Storm Lab

The text

As transmitted.

898 
WFUS51 KCTP 281715
TORCTP
PAC061-087-281745-
/O.NEW.KCTP.TO.W.0002.200828T1715Z-200828T1745Z/

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

The National Weather Service in State College PA has issued a

* Tornado Warning for...
  Northeastern Huntingdon County in central Pennsylvania...
  West central Mifflin County in central Pennsylvania...

* Until 145 PM EDT.
    
* At 114 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Whipple Dam State Park, moving southeast at 30
  mph.

  HAZARD...Tornado.

  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...
  Mcalevys Fort around 120 PM EDT.
  Belleville around 130 PM EDT.

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 4066 7793 4070 7792 4072 7790 4072 7787
      4063 7760 4054 7771
TIME...MOT...LOC 1714Z 296DEG 27KT 4068 7788 

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

$$

Lambert

1 follow-up statement

148 
WWUS51 KCTP 281731
SVSCTP

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

PAC061-281741-
/O.CAN.KCTP.TO.W.0002.000000T0000Z-200828T1745Z/
Huntingdon PA-
131 PM EDT Fri Aug 28 2020

...THE TORNADO WARNING FOR NORTHEASTERN HUNTINGDON COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved 
southeast and out of the warned area. Therefore, the warning has 
been cancelled.

LAT...LON 4059 7780 4061 7779 4063 7777 4066 7771
      4063 7760 4054 7771
TIME...MOT...LOC 1731Z 297DEG 25KT 4063 7775 

$$

PAC087-281745-
/O.CON.KCTP.TO.W.0002.000000T0000Z-200828T1745Z/
Mifflin PA-
131 PM EDT Fri Aug 28 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 145 PM EDT FOR WEST
CENTRAL MIFFLIN COUNTY...
    
At 131 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Belleville, moving southeast at 30 mph.

HAZARD...Tornado.

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 tornadic thunderstorm will remain over mainly rural areas of
west central Mifflin 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 4059 7780 4061 7779 4063 7777 4066 7771
      4063 7760 4054 7771
TIME...MOT...LOC 1731Z 297DEG 25KT 4063 7775 

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

$$

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, 1:25 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, 2:22 PM EDT	Tornado Warning	CTP	Adams, Cumberland	38 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.