Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 151, NWS State College, PA

July 26, 20124 counties in Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jul 26, 2012, 5:46 PM EDT for 4 counties in Pennsylvania. It was in force for 74 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: Jul 26, 2012, 5:46 PM EDT (21:46 UTC)
Expired: Jul 26, 2012, 7:00 PM EDT
In force: 74 min
Issued by: NWS State College, PA
Area: Storm-based polygon

Counties Columbia County, PA, Montour County, PA, Northumberland County, PA, Schuylkill County, PA

The radar

The State College radar (KCCX), 154 km from the middle of the area, began a volume at 21:48 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
Jul 26, 1:16 PM EDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.8 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: 59 J/kg
Mixed-layer CIN: -282 J/kg
Mixed-layer LCL: 1017 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 238 m²/s²
0-3 km storm-relative helicity: 239 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

821 
WUUS51 KCTP 262146
SVRCTP
PAC037-093-097-107-262300-
/O.NEW.KCTP.SV.W.0151.120726T2146Z-120726T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
546 PM EDT THU JUL 26 2012

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN COLUMBIA COUNTY IN CENTRAL PENNSYLVANIA...
  SOUTHEASTERN MONTOUR COUNTY IN CENTRAL PENNSYLVANIA...
  SCHUYLKILL COUNTY IN CENTRAL PENNSYLVANIA...
  SOUTHERN NORTHUMBERLAND COUNTY IN CENTRAL PENNSYLVANIA...

* UNTIL 700 PM EDT

* AT 543 PM EDT...A LINE OF SEVERE THUNDERSTORMS EXTENDED FROM
  MECHANICSVILLE TO FERNDALE TO HERNDON...MOVING SOUTHEAST AT 35
  MPH. THESE STORMS ARE CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN
  EXCESS OF 70 MPH. 

* LOCATIONS IN THE WARNING INCLUDE...
  ALMEDIA...
  NUMIDIA AND MAINVILLE...
  SHUMANS AND MOUNT CARMEL...
  SCOTCH VALLEY AND VALLEY VIEW...
  NUREMBURG AND GIRARDVILLE...
  SHENANDOAH AND TREMONT...

THIS WILL IMPACT THE FOLLOWING CENTRAL PENNSYLVANIA INTERSTATES...
I-80 BETWEEN MILE MARKERS 226 AND 235...I-81 BETWEEN MILE MARKERS 103
AND 139.

THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 11...ROUTE
209...STATE ROAD 61...STATE ROAD 309.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS LINE OF SEVERE THUNDERSTORMS HAS A WIDESPREAD HISTORY OF 
PRODUCING WIND DAMAGE. DO NOT STAY OUTDOORS. SEVERE THUNDERSTORMS 
PRODUCE DAMAGE.

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.

&&

LAT...LON 4064 7598 4057 7601 4058 7605 4051 7625
      4051 7631 4082 7683 4092 7666 4105 7659
      4099 7621 4095 7619 4091 7605 4091 7599
      4081 7588 4073 7576
TIME...MOT...LOC 2145Z 298DEG 31KT 4092 7652 4079 7657
          4074 7681

$$

FORECASTER: DANGELO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 4:04 AM EDT	Special Weather Statement	CTP	McKean	26 min
Jul 26, 4:26 AM EDT	Special Weather Statement	CTP	McKean, Warren	49 min
Jul 26, 5:03 AM EDT	Special Weather Statement	CTP	Bedford, Blair, Cambria, Somerset	72 min
Jul 26, 5:10 AM EDT	Special Weather Statement	CTP	Clearfield	35 min
Jul 26, 5:14 AM EDT	Special Weather Statement	CTP	McKean, Potter, Warren	31 min
Jul 26, 5:43 AM EDT	Special Weather Statement	CTP	Centre, Clearfield	32 min
Jul 26, 5:46 AM EDT	Special Weather Statement	CTP	Cameron, Elk, Potter, Tioga	29 min
Jul 26, 6:29 AM EDT	Special Weather Statement	CTP	Clinton, Lycoming, Montour, Union	46 min
Jul 26, 6:33 AM EDT	Special Weather Statement	CTP	Franklin	42 min
Jul 26, 7:29 AM EDT	Special Weather Statement	CTP	Columbia, Montour, Northumberland, Schuylkill, Union	61 min
Jul 26, 7:45 AM EDT	Special Weather Statement	CTP	Cumberland, Juniata, Perry	60 min
Jul 26, 8:41 AM EDT	Special Weather Statement	CTP	Adams, Cumberland, Dauphin, Lebanon	64 min
Jul 26, 1:11 PM EDT	Special Weather Statement	CTP	Warren	64 min
Jul 26, 1:20 PM EDT	Severe Thunderstorm Warning	CTP	Warren	55 min
Jul 26, 1:48 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clearfield, Elk, McKean, Potter, Warren	72 min
Jul 26, 2:25 PM EDT	Severe Thunderstorm Warning	CTP	Warren	35 min
Jul 26, 2:51 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Centre, Clearfield, Clinton, Elk, McKean and 3 more	69 min
Jul 26, 2:51 PM EDT	Tornado Warning	CTP	McKean, Potter	39 min
Jul 26, 3:22 PM EDT	Tornado Warning	CTP	Potter, Tioga	53 min
Jul 26, 3:29 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming, Potter, Sullivan, Tioga	91 min
Jul 26, 3:46 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Centre, Clearfield, Clinton, Columbia, Lycoming and 6 more	74 min
Jul 26, 3:54 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Centre, Clearfield, Huntingdon, Mifflin	66 min
Jul 26, 4:41 PM EDT	Tornado Warning	CTP	Columbia, Lycoming, Montour, Northumberland	34 min
Jul 26, 4:48 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Centre, Clearfield, Fulton and 5 more	57 min
Jul 26, 4:53 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Huntingdon, Juniata, Mifflin, Northumberland, Snyder and 1 more	67 min
Jul 26, 4:58 PM EDT	Severe Thunderstorm Warning	CTP	Columbia	32 min
Jul 26, 5:06 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Montour, Northumberland, Schuylkill, Snyder, Sullivan	84 min
Jul 26, 5:09 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Cumberland, Dauphin, Huntingdon, Juniata, Lancaster and 8 more	81 min
Jul 26, 5:30 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Cumberland, Franklin, Fulton and 5 more	60 min
Jul 26, 6:04 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Franklin, Perry, York	56 min
Jul 26, 6:26 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Cumberland, Franklin, Fulton and 5 more	64 min
Jul 26, 6:33 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Dauphin, Lancaster, Lebanon, Schuylkill and 1 more	57 min
Jul 26, 6:42 PM EDT	Areal Flood Advisory	CTP	Bedford, Blair, Cambria, Somerset	3 hr
Jul 26, 6:56 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Franklin, York	49 min
Jul 26, 6:57 PM EDT	Areal Flood Advisory	CTP	Adams, Cumberland, Dauphin, Lancaster, Lebanon, Perry and 2 more	3 hr
Jul 26, 7:06 PM EDT	Special Weather Statement	CTP	Clearfield	54 min
Jul 26, 7:20 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Huntingdon, Somerset	70 min
Jul 26, 7:23 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Lancaster, York	52 min
Jul 26, 7:46 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Centre, Clearfield, Huntingdon	59 min
Jul 26, 7:52 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Cumberland, Franklin, Fulton, Huntingdon, Juniata and 3 more	53 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.