Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 21, NWS State College, PA

April 26, 2011Lycoming County, Tioga County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Apr 26, 2011, 2:54 PM EDT for Lycoming County, Tioga County, Pennsylvania. It was in force for 66 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: Apr 26, 2011, 2:54 PM EDT (18:54 UTC)
Expired: Apr 26, 2011, 4:00 PM EDT
In force: 66 min
Issued by: NWS State College, PA
Area: Storm-based polygon

Counties Lycoming County, PA, Tioga County, PA

The radar

The Binghamton radar (KBGM), 109 km from the middle of the area, began a volume at 18:53 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.

Issued	Product	Office	Lasted
Apr 26, 1:49 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 6.9 hours before the alert went out and 178 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: 493 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 128 m²/s²
0-3 km storm-relative helicity: 237 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

196 
WUUS51 KCTP 261854
SVRCTP
PAC081-117-262000-
/O.NEW.KCTP.SV.W.0021.110426T1854Z-110426T2000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
254 PM EDT TUE APR 26 2011

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  TIOGA COUNTY IN NORTH CENTRAL PENNSYLVANIA...
  NORTHWESTERN LYCOMING COUNTY IN NORTH CENTRAL PENNSYLVANIA...

* UNTIL 400 PM EDT

* AT 248 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM. THE STORM WAS NEAR LEETONIA...MOVING NORTHEAST
  AT 40 MPH. THIS STORM IS CAPABLE OF PRODUCING ONE INCH DIAMETER
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. 

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MORRIS AND WELLSBORO AROUND 305 PM EDT...
  KEENEYVILLE AROUND 315 PM EDT...
  COVINGTON AND BLOSSBURG AROUND 320 PM EDT...
  MANSFIELD AROUND 325 PM EDT...
  TIOGA JUNCTION AROUND 330 PM EDT...
  MILLERTON AROUND 345 PM EDT...

THIS WILL IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 6...ROUTE 15.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

NEARLY CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS 
SEVERE THUNDERSTORM. WHEN THUNDER ROARS...MOVE INDOORS! REMEMBER...IF
YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY 
LIGHTNING.

MOVE INSIDE A PERMANENT BUILDING NOW TO BE SAFE FROM STRONG WIND 
GUSTS AND LARGE HAIL.

PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE...1 8 7 7 6 3 3 6 7 7 2.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR CENTRAL PENNSYLVANIA.

&&

LAT...LON 4199 7692 4168 7688 4149 7748 4151 7760
      4169 7760 4200 7712 4200 7693
TIME...MOT...LOC 1853Z 236DEG 34KT 4162 7741

$$

FORECASTER: LAMBERT

1 follow-up statement

791 
WWUS51 KCTP 261947
SVSCTP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
347 PM EDT TUE APR 26 2011

PAC081-261957-
/O.CAN.KCTP.SV.W.0021.000000T0000Z-110426T2000Z/
LYCOMING PA-
347 PM EDT TUE APR 26 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN LYCOMING COUNTY
IS CANCELLED...

THE STORM THAT PROMPTED THE SEVERE THUNDERSTORM WARNING HAS MOVED OUT
OF THE AREA...THEREFORE THE SEVERE THUNDERSTORM WARNING HAS BEEN
CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR CENTRAL PENNSYLVANIA.

LAT...LON 4199 7692 4168 7688 4159 7715 4172 7731
      4200 7712 4200 7693
TIME...MOT...LOC 1947Z 245DEG 24KT 4174 7705

$$

PAC117-262000-
/O.CON.KCTP.SV.W.0021.000000T0000Z-110426T2000Z/
TIOGA PA-
347 PM EDT TUE APR 26 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT
FOR EASTERN TIOGA COUNTY...

AT 343 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING ONE INCH DIAMETER
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED
NEAR COVINGTON...OR NEAR MANSFIELD...MOVING NORTHEAST AT 30 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
TIOGA JUNCTION AROUND 355 PM EDT...
ROSEVILLE AROUND 400 PM EDT...

THIS WILL IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 6...ROUTE 15.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE...1 8 7 7 6 3 3 6 7 7 2.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR CENTRAL PENNSYLVANIA.

&&

LAT...LON 4199 7692 4168 7688 4159 7715 4172 7731
      4200 7712 4200 7693
TIME...MOT...LOC 1947Z 245DEG 24KT 4174 7705

$$

FORECASTER: EVANEGO/LAMBERT

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 25, 8:06 PM EDT	Special Weather Statement	CTP	Tioga	24 min
Apr 25, 8:22 PM EDT	Special Weather Statement	CTP	Cambria	38 min
Apr 25, 8:39 PM EDT	Special Weather Statement	CTP	Tioga	21 min
Apr 25, 8:48 PM EDT	Special Weather Statement	CTP	Clearfield, Tioga	42 min
Apr 25, 9:20 PM EDT	Special Weather Statement	CTP	Clinton, Tioga	25 min
Apr 25, 9:50 PM EDT	Special Weather Statement	CTP	Clinton, Lycoming	25 min
Apr 25, 10:07 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Sullivan	23 min
Apr 25, 10:14 PM EDT	Special Weather Statement	CTP	Lycoming, Union	31 min
Apr 25, 10:31 PM EDT	Special Weather Statement	CTP	Lycoming, Sullivan, Union	29 min
Apr 25, 10:57 PM EDT	Special Weather Statement	CTP	Montour, Sullivan, Union	33 min
Apr 25, 11:29 PM EDT	Special Weather Statement	CTP	Columbia, Montour	31 min
Apr 26, 8:50 AM EDT	Special Weather Statement	CTP	Warren	40 min
Apr 26, 11:51 AM EDT	Special Weather Statement	CTP	McKean	39 min
Apr 26, 1:44 PM EDT	Special Weather Statement	CTP	Centre	46 min
Apr 26, 1:58 PM EDT	Special Weather Statement	CTP	Clinton	62 min
Apr 26, 2:08 PM EDT	Special Weather Statement	CTP	Somerset	52 min
Apr 26, 2:32 PM EDT	Special Weather Statement	CTP	Tioga	58 min
Apr 26, 2:47 PM EDT	Special Weather Statement	CTP	Clinton	43 min
Apr 26, 3:04 PM EDT	Severe Thunderstorm Warning	CTP	Cambria, Clearfield	56 min
Apr 26, 3:09 PM EDT	Special Weather Statement	CTP	Cambria	81 min
Apr 26, 3:21 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Somerset	54 min
Apr 26, 3:28 PM EDT	Special Weather Statement	CTP	Lycoming	77 min
Apr 26, 4:01 PM EDT	Special Weather Statement	CTP	Tioga	29 min
Apr 26, 4:10 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Centre, Huntingdon	65 min
Apr 26, 4:19 PM EDT	Special Weather Statement	CTP	Elk	56 min
Apr 26, 4:21 PM EDT	Special Weather Statement	CTP	Potter	39 min
Apr 26, 4:22 PM EDT	Special Weather Statement	CTP	Clinton	68 min
Apr 26, 4:32 PM EDT	Special Weather Statement	CTP	Lycoming	43 min
Apr 26, 4:40 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Sullivan, Tioga	35 min
Apr 26, 5:03 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Clearfield, Somerset	57 min
Apr 26, 5:03 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Lycoming, Potter, Tioga	42 min
Apr 26, 5:14 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton	61 min
Apr 26, 5:25 PM EDT	Special Weather Statement	CTP	Somerset	50 min
Apr 26, 5:49 PM EDT	Special Weather Statement	CTP	Cameron, Clearfield	56 min
Apr 26, 5:58 PM EDT	Severe Thunderstorm Warning	CTP	Cambria, Centre, Clearfield	47 min
Apr 26, 6:09 PM EDT	Special Weather Statement	CTP	Potter	21 min
Apr 26, 6:14 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming	61 min
Apr 26, 6:21 PM EDT	Special Weather Statement	CTP	Blair	39 min
Apr 26, 6:30 PM EDT	Special Weather Statement	CTP	Centre	60 min
Apr 26, 6:32 PM EDT	Special Weather Statement	CTP	Tioga	13 min
Apr 26, 6:36 PM EDT	Special Weather Statement	CTP	Bedford	24 min
Apr 26, 6:39 PM EDT	Special Weather Statement	CTP	Clinton, Tioga	66 min
Apr 26, 6:44 PM EDT	Areal Flood Advisory	CTP	Cameron, Centre, Clearfield, Clinton, Lycoming, McKean and 3 more	3 hr
Apr 26, 6:58 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Huntingdon, Juniata, Mifflin	62 min
Apr 26, 7:11 PM EDT	Special Weather Statement	CTP	Bedford	34 min
Apr 26, 7:12 PM EDT	Flash Flood Warning	CTP	Clinton, Lycoming, Potter, Tioga	3 hr
Apr 26, 7:20 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Sullivan, Tioga	55 min
Apr 26, 7:27 PM EDT	Special Weather Statement	CTP	Clinton	33 min
Apr 26, 7:38 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Huntingdon, Juniata, Mifflin, Snyder, Union	67 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2011 Every severe thunderstorm warning in 2011

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.