Alert archive / Pennsylvania / Special Weather Statements in 2017

Special Weather Statement, NWS State College, PA

August 4, 2017McKean County, Pennsylvania

NWS State College, PA issued this special weather statement at Aug 4, 2017, 8:51 AM EDT for McKean County, Pennsylvania. It was in force for 69 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: Aug 4, 2017, 8:51 AM EDT (12:51 UTC)
Expired: Aug 4, 2017, 10:00 AM EDT
In force: 69 min
Issued by: NWS State College, PA

County McKean County, PA

The radar

The Buffalo radar (KBUF), 116 km from the middle of the area, began a volume at 12:55 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 nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 0.9 hours before the alert went out and 114 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: 243 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 895 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 179 m²/s²
0-3 km storm-relative helicity: 190 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS State College, PA wrote its last area forecast discussion before this special weather statement went out at Aug 4, 6:16 AM EDT, 2 hours 35 minutes earlier.

Area forecast discussion, Aug 4, 6:16 AM EDT, 2 hours 35 minutes before

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<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Hazardous weather outlook, Aug 4, 4:34 AM EDT, 4 hours 17 minutes before

Hazardous Weather Outlook
National Weather Service State College PA
434 AM EDT Fri Aug 4 2017

PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053-
056>059-063>066-050845-
Warren-McKean-Potter-Elk-Cameron-Northern Clinton-Clearfield-
Northern Centre-Southern Centre-Cambria-Blair-Huntingdon-Mifflin-
Juniata-Somerset-Bedford-Fulton-Franklin-Tioga-Northern Lycoming-
Sullivan-Southern Clinton-Southern Lycoming-Union-Snyder-Montour-
Northumberland-Columbia-Perry-Dauphin-Schuylkill-Lebanon-Cumberland-
Adams-York-Lancaster-
434 AM EDT Fri Aug 4 2017

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and Tonight.

Severe thunderstorms with damaging winds 60 mph or greater and
large hail exceeding 1 inch in diameter are possible this afternoon
and evening.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

BG/MD

In the hours before

Special weather statement, Aug 4, 8:51 AM EDT, 0 minutes before

Special Weather Statement
National Weather Service State College PA
851 AM EDT FRI AUG 4 2017

PAZ005-041400-
McKean PA-
851 AM EDT FRI AUG 4 2017

...A STRONG THUNDERSTORM WILL AFFECT PARTS OF MCKEAN COUNTY UNTIL
1000 AM EDT...

At 850 AM EDT, Doppler radar indicated a strong thunderstorm over
Westline, moving northeast at 20 mph.

Pea size hail and brief wind gusts in excess of 40 mph are possible.

This strong thunderstorm will be near...
  Marshburg around 900 AM EDT.
  Cyclone around 915 AM EDT.
  Bradford and Rew around 935 AM EDT.

Other locations impacted by this storm include Eldred, Lewis Run,
University Of Pittsburgh - Bradford and Bradford Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

Persons in campgrounds should consider seeking sturdy shelter until
this storm passes.

&&

LAT...LON 4198 7828 4173 7876 4181 7888 4200 7869
      4200 7831
TIME...MOT...LOC 1250Z 225DEG 16KT 4180 7877

Lambert

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 3, 9:36 PM EDT	Special Weather Statement	CTP	Franklin	39 min
Aug 4, 1:03 PM EDT	Special Weather Statement	CTP	Adams, Cumberland, Perry	42 min
Aug 4, 1:19 PM EDT	Special Weather Statement	CTP	Bedford	26 min
Aug 4, 1:46 PM EDT	Special Weather Statement	CTP	Warren	44 min
Aug 4, 1:47 PM EDT	Special Weather Statement	CTP	Schuylkill	43 min
Aug 4, 1:51 PM EDT	Special Weather Statement	CTP	Dauphin	39 min
Aug 4, 2:26 PM EDT	Areal Flood Advisory	CTP	Cumberland, Dauphin, Lebanon	3 hr
Aug 4, 2:32 PM EDT	Special Weather Statement	CTP	Dauphin, Lebanon, Schuylkill	43 min
Aug 4, 2:36 PM EDT	Severe Thunderstorm Warning	CTP	Warren	54 min
Aug 4, 2:51 PM EDT	Special Weather Statement	CTP	Union	39 min
Aug 4, 2:52 PM EDT	Special Weather Statement	CTP	Fulton	23 min
Aug 4, 3:14 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Northumberland, Sullivan, Union	61 min
Aug 4, 3:19 PM EDT	Special Weather Statement	CTP	Fulton	26 min
Aug 4, 3:26 PM EDT	Severe Thunderstorm Warning	CTP	Warren	79 min
Aug 4, 3:42 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Schuylkill	82 min
Aug 4, 3:46 PM EDT	Special Weather Statement	CTP	Huntingdon	29 min
Aug 4, 3:58 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Sullivan	47 min
Aug 4, 4:04 PM EDT	Severe Thunderstorm Warning	CTP	Somerset	56 min
Aug 4, 4:14 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria	46 min
Aug 4, 4:18 PM EDT	Special Weather Statement	CTP	Bedford	27 min
Aug 4, 4:24 PM EDT	Special Weather Statement	CTP	Elk, McKean	36 min
Aug 4, 4:28 PM EDT	Special Weather Statement	CTP	Clinton	32 min
Aug 4, 4:30 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Huntingdon, Mifflin	75 min
Aug 4, 4:33 PM EDT	Special Weather Statement	CTP	Juniata	42 min
Aug 4, 4:42 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria	33 min
Aug 4, 4:47 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Centre, Clearfield	43 min
Aug 4, 4:58 PM EDT	Special Weather Statement	CTP	Bedford, Fulton	32 min
Aug 4, 5:15 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria	37 min
Aug 4, 5:24 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Centre, Clearfield, Clinton	51 min
Aug 4, 5:28 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Fulton	62 min
Aug 4, 5:36 PM EDT	Tornado Warning	CTP	Fulton	39 min
Aug 4, 5:44 PM EDT	Special Weather Statement	CTP	Clinton	46 min
Aug 4, 5:51 PM EDT	Special Weather Statement	CTP	Potter	39 min
Aug 4, 5:59 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming, Potter, Tioga	61 min
Aug 4, 6:18 PM EDT	Severe Thunderstorm Warning	CTP	Franklin, Fulton, Huntingdon	57 min
Aug 4, 6:29 PM EDT	Areal Flood Advisory	CTP	Franklin, Fulton, Huntingdon	3 hr
Aug 4, 6:44 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Tioga	61 min
Aug 4, 6:50 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming	40 min
Aug 4, 7:08 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Juniata, Perry	67 min
Aug 4, 7:12 PM EDT	Areal Flood Advisory	CTP	Clinton, Lycoming, Tioga	2 hr
Aug 4, 7:17 PM EDT	Severe Thunderstorm Warning	CTP	Franklin	43 min
Aug 4, 7:36 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming	54 min
Aug 4, 7:50 PM EDT	Special Weather Statement	CTP	Sullivan	55 min
Aug 4, 7:55 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clearfield, Elk	80 min

Nearby

Special Weather Statements in Pennsylvania, 2017 Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.