Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 32, NWS State College, PA

May 29, 2012McKean County, Potter County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at May 29, 2012, 1:36 PM EDT for McKean County, Potter County, Pennsylvania. It was in force for 69 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 29, 2012, 1:36 PM EDT (17:36 UTC)
Expired: May 29, 2012, 2:45 PM EDT
In force: 69 min
Issued by: NWS State College, PA
Area: Storm-based polygon

Counties McKean County, PA, Potter County, PA

The radar

The State College radar (KCCX), 86 km from the middle of the area, began a volume at 17:36 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 29, 2:00 PM EDT	TSTM WND DMG	Coudersport, PA	TREES AND LINES DOWN

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 29, 10:27 AM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 5.6 hours before the alert went out and 145 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: 1783 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 1124 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 128 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 2.0

Open this sounding in Storm Lab

The text

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

902 
WUUS51 KCTP 291736
SVRCTP
PAC083-105-291845-
/O.NEW.KCTP.SV.W.0032.120529T1736Z-120529T1845Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
136 PM EDT TUE MAY 29 2012

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN MCKEAN COUNTY IN NORTH CENTRAL PENNSYLVANIA...
  POTTER COUNTY IN NORTH CENTRAL PENNSYLVANIA...

* UNTIL 245 PM EDT

* AT 131 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS. THESE SEVERE STORMS EXTENDED FROM
  ELDRED TO EAST BRANCH DAM...MOVING EAST AT 35 MPH. THESE STORMS
  ARE CAPABLE OF DAMAGING WINDS IN EXCESS OF 65 MPH AND LARGE HAIL. 

* LOCATIONS IN THE WARNING INCLUDE...
  SHINGLEHOUSE AND PORT ALLEGANY...
  NORWICH...
  ROULETTE AND KEATING SUMMIT...
  GENESEE...
  COUDERSPORT...
  DENTON HILL STATE PARK...

THIS WILL IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 6...STATE ROAD
46...STATE ROAD 59...STATE ROAD 446...STATE ROAD 449.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS CREATE WINDS OF MORE THAN 57 MPH...OR HAIL ONE
INCH OR LARGER.

SEVERE THUNDERSTORMS PRODUCE DAMAGE. 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 700 PM EDT
TUESDAY EVENING FOR CENTRAL PENNSYLVANIA. A SEVERE THUNDERSTORM WATCH
ALSO REMAINS IN EFFECT UNTIL 900 PM EDT TUESDAY EVENING FOR CENTRAL
PENNSYLVANIA.

&&

LAT...LON 4162 7760 4160 7819 4162 7820 4162 7842
      4160 7842 4160 7848 4163 7849 4163 7859
      4201 7840 4200 7761
TIME...MOT...LOC 1736Z 267DEG 29KT 4201 7824 4163 7850

$$

FORECASTER: DANGELO

The office that day

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

Issued	Product	Office	Counties	Lasted
May 29, 11:38 AM EDT	Special Weather Statement	CTP	Warren	67 min
May 29, 11:47 AM EDT	Severe Thunderstorm Warning	CTP	Warren	58 min
May 29, 12:20 PM EDT	Special Weather Statement	CTP	Warren	25 min
May 29, 12:48 PM EDT	Special Weather Statement	CTP	Warren	27 min
May 29, 1:13 PM EDT	Special Weather Statement	CTP	Potter	47 min
May 29, 1:21 PM EDT	Special Weather Statement	CTP	Clinton	24 min
May 29, 1:22 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clearfield, Elk	53 min
May 29, 1:28 PM EDT	Special Weather Statement	CTP	McKean	32 min
May 29, 1:32 PM EDT	Severe Thunderstorm Warning	CTP	Tioga	43 min
May 29, 1:58 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Huntingdon, Mifflin	62 min
May 29, 2:07 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clinton, Elk, Potter	38 min
May 29, 2:12 PM EDT	Severe Thunderstorm Warning	CTP	Cambria, Clearfield, Elk	63 min
May 29, 2:17 PM EDT	Severe Thunderstorm Warning	CTP	Tioga	58 min
May 29, 2:29 PM EDT	Special Weather Statement	CTP	Huntingdon	31 min
May 29, 2:43 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming, Potter	62 min
May 29, 3:06 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Huntingdon, Juniata, Mifflin, Perry, Snyder and 1 more	39 min
May 29, 3:09 PM EDT	Special Weather Statement	CTP	Sullivan	36 min
May 29, 3:13 PM EDT	Severe Thunderstorm Warning	CTP	Tioga	32 min
May 29, 3:16 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Centre, Clinton, Fulton, Huntingdon and 2 more	44 min
May 29, 3:19 PM EDT	Special Weather Statement	CTP	Schuylkill	41 min
May 29, 3:28 PM EDT	Special Weather Statement	CTP	Lycoming	32 min
May 29, 3:36 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Sullivan, Tioga	54 min
May 29, 3:43 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Dauphin, Juniata, Montour, Northumberland, Perry and 3 more	77 min
May 29, 3:55 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Centre, Clinton, Franklin, Fulton, Huntingdon and 5 more	65 min
May 29, 4:26 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Sullivan	34 min
May 29, 4:30 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Dauphin, Franklin, Perry, York	45 min
May 29, 5:03 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Dauphin, Lancaster, Lebanon, Perry and 2 more	72 min
May 29, 5:15 PM EDT	Areal Flood Advisory	CTP	Cumberland, Dauphin, Franklin, Lebanon, Schuylkill	3 hr
May 29, 5:23 PM EDT	Severe Thunderstorm Warning	CTP	Schuylkill	43 min
May 29, 5:37 PM EDT	Flash Flood Warning	CTP	Cumberland, Dauphin, Lebanon, Perry, Schuylkill	3 hr
May 29, 5:48 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Lancaster, Lebanon, York	72 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2012 Every severe thunderstorm warning in 2012

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.