Alert archive / Pennsylvania / Tornado Warnings in 2017

Tornado Warning 5, NWS State College, PA

May 1, 2017McKean County, Pennsylvania

NWS State College, PA issued this tornado warning at May 1, 2017, 4:06 PM EDT for McKean County, Pennsylvania. It was in force for 39 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: May 1, 2017, 4:06 PM EDT (20:06 UTC)
Expired: May 1, 2017, 4:45 PM EDT
In force: 39 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County McKean County, PA

The radar

The State College radar (KCCX), 94 km from the middle of the area, began a volume at 20:05 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
May 1, 4:25 PM EDT	FUNNEL CLOUD	Crosby, PA	FUNNEL CLOUD NEAR CROSBY

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
May 1, 2:12 PM EDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 8.1 hours before the alert went out and 138 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1242 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 306 m²/s²
0-3 km storm-relative helicity: 318 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

214 
WFUS51 KCTP 012006
TORCTP
PAC083-012045-
/O.NEW.KCTP.TO.W.0005.170501T2006Z-170501T2045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service State College PA
406 PM EDT MON MAY 1 2017

The National Weather Service in State College PA has issued a

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

* Until 445 PM EDT
    
* At 406 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Wilcox, moving northeast at 55 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 dangerous storm will be near...
  Kinzua Bridge State Park and Betula around 420 PM EDT. 
  Crosby and Smethport around 430 PM EDT. 
  Port Allegany around 440 PM EDT. 

Other locations impacted by this tornadic thunderstorm include Mount
Jewett.

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.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 4198 7821 4162 7820 4162 7841 4160 7842
      4160 7848 4163 7850 4163 7890
TIME...MOT...LOC 2006Z 238DEG 48KT 4160 7873 

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

$$

KF

2 follow-up statements

573 
WWUS51 KCTP 012015
SVSCTP

Severe Weather Statement
National Weather Service State College PA
415 PM EDT MON MAY 1 2017

PAC083-012045-
/O.CON.KCTP.TO.W.0005.000000T0000Z-170501T2045Z/
McKean PA-
415 PM EDT MON MAY 1 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM EDT FOR
SOUTHEASTERN MCKEAN COUNTY...
    
At 414 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Kinzua Bridge State Park, moving east at 60 mph.

HAZARD...Tornado. 

SOURCE...Radar indicated strong 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...
  Betula and Crosby around 420 PM EDT. 
  Port Allegany around 430 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.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 4163 7860 4176 7862 4198 7821 4162 7820
      4162 7841 4160 7842 4160 7848 4163 7850
TIME...MOT...LOC 2014Z 254DEG 52KT 4167 7855 

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

$$

La Corte

764 
WWUS51 KCTP 012018
SVSCTP

Severe Weather Statement
National Weather Service State College PA
418 PM EDT MON MAY 1 2017

PAC083-012045-
/O.CON.KCTP.TO.W.0005.000000T0000Z-170501T2045Z/
McKean PA-
418 PM EDT MON MAY 1 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM EDT FOR
SOUTHEASTERN MCKEAN COUNTY...
    
At 417 PM EDT, a large and extremely dangerous tornado was located
near Betula, moving east at 60 mph.

This is a PARTICULARLY DANGEROUS SITUATION. TAKE COVER NOW!

HAZARD...Damaging tornado. 

SOURCE...Radar indicated strong rotation. 

IMPACT...You are in a life-threatening situation. Flying debris may 
         be deadly to those caught without shelter. Mobile homes 
         will be destroyed. Considerable damage to homes, 
         businesses, and vehicles is likely and complete destruction 
         is possible. 

The tornado will be near...
  Betula and Crosby around 420 PM EDT. 
  Port Allegany around 430 PM EDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a large, extremely dangerous and potentially deadly
tornado is developing. To protect your life, 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.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 4163 7860 4176 7862 4198 7821 4162 7820
      4162 7841 4160 7842 4160 7848 4163 7850
TIME...MOT...LOC 2017Z 254DEG 52KT 4168 7849 

TORNADO...RADAR INDICATED
TORNADO DAMAGE THREAT...CONSIDERABLE
HAIL...<.75IN

$$

La Corte

The office that day

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

Issued	Product	Office	Counties	Lasted
May 1, 2:26 PM EDT	Special Weather Statement	CTP	Warren	64 min
May 1, 2:37 PM EDT	Severe Thunderstorm Warning	CTP	Warren	68 min
May 1, 3:33 PM EDT	Severe Thunderstorm Warning	CTP	Elk, McKean	87 min
May 1, 3:43 PM EDT	Severe Thunderstorm Warning	CTP	Warren	17 min
May 1, 3:48 PM EDT	Tornado Warning	CTP	Elk	27 min
May 1, 3:56 PM EDT	Severe Thunderstorm Warning	CTP	Cambria, Clearfield	94 min
May 1, 4:22 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Potter	68 min
May 1, 4:35 PM EDT	Tornado Warning	CTP	Potter	55 min
May 1, 4:52 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton	113 min
May 1, 5:01 PM EDT	Severe Thunderstorm Warning	CTP	Somerset	29 min
May 1, 5:05 PM EDT	Areal Flood Advisory	CTP	McKean, Warren	3 hr
May 1, 5:21 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair	84 min
May 1, 5:25 PM EDT	Severe Thunderstorm Warning	CTP	Potter, Tioga	95 min
May 1, 5:35 PM EDT	Severe Thunderstorm Warning	CTP	Cambria, Clearfield, Somerset	25 min
May 1, 5:44 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming	61 min
May 1, 5:50 PM EDT	Areal Flood Advisory	CTP	Bedford, Blair, Cambria, Centre, Clearfield, Huntingdon and 1 more	3 hr
May 1, 5:58 PM EDT	Areal Flood Advisory	CTP	Clinton, Lycoming, Potter, Tioga	3 hr
May 1, 6:06 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Huntingdon	69 min
May 1, 6:31 PM EDT	Severe Thunderstorm Warning	CTP	Mifflin	59 min
May 1, 6:36 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Snyder, Union	84 min
May 1, 6:44 PM EDT	Areal Flood Advisory	CTP	Centre, Clinton, Huntingdon, Juniata, Lycoming, Mifflin and 5 more	3 hr
May 1, 6:44 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton	46 min
May 1, 6:52 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Snyder	68 min
May 1, 7:05 PM EDT	Severe Thunderstorm Warning	CTP	Sullivan	55 min
May 1, 7:14 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Montour, Northumberland	61 min
May 1, 7:36 PM EDT	Special Weather Statement	CTP	Juniata, Mifflin, Snyder	54 min
May 1, 7:59 PM EDT	Severe Thunderstorm Warning	CTP	Snyder	21 min

Nearby

Tornado Warnings in Pennsylvania, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.