Alert archive / Pennsylvania / Heat Advisories in 2013

Heat Advisory 2, NWS State College, PA

July 18, 201323 counties in Pennsylvania

NWS State College, PA issued this heat advisory at Jul 18, 2013, 12:48 PM EDT for 23 counties in Pennsylvania. It took effect at Jul 19, 2013, 12:00 PM EDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Jul 18, 2013, 12:48 PM EDT (16:48 UTC)
In effect from: Jul 19, 2013, 12:00 PM EDT
Expired: Jul 19, 2013, 8:00 PM EDT
In force: 8 hr
Issued by: NWS State College, PA

All 23 counties

Adams County, PA, Centre County, PA, Clinton County, PA, Columbia County, PA, Cumberland County, PA, Dauphin County, PA, Franklin County, PA, Fulton County, PA, Huntingdon County, PA, Juniata County, PA, Lancaster County, PA, Lebanon County, PA, Lycoming County, PA, Mifflin County, PA, Montour County, PA, Northumberland County, PA, Perry County, PA, Schuylkill County, PA, Snyder County, PA, Sullivan County, PA, Tioga County, PA, Union County, PA, York County, PA

The radar

The State College radar (KCCX), 83 km from the middle of the area, began a volume at 16:49 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 4.8 hours before the alert went out and 155 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: 1674 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 1191 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 37 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this heat advisory 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 heat advisory went out at Jul 18, 11:26 AM EDT, 1 hour 22 minutes earlier.

Area forecast discussion, Jul 18, 11:26 AM EDT, 1 hour 22 minutes before

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Hazardous weather outlook, Jul 18, 10:42 AM EDT, 2 hours 6 minutes before

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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
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      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
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        Please try again in a few minutes.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 8:55 PM EDT	Special Weather Statement	CTP	Sullivan	35 min
Jul 18, 2:48 PM EDT	Special Weather Statement	CTP	McKean	42 min
Jul 18, 3:03 PM EDT	Special Weather Statement	CTP	Potter	57 min
Jul 18, 3:28 PM EDT	Special Weather Statement	CTP	Cameron, Elk, Potter	32 min
Jul 18, 3:52 PM EDT	Areal Flood Advisory	CTP	McKean, Potter	3 hr
Jul 18, 3:56 PM EDT	Special Weather Statement	CTP	Tioga	34 min
Jul 18, 3:58 PM EDT	Special Weather Statement	CTP	Cameron, Elk	47 min
Jul 18, 4:45 PM EDT	Special Weather Statement	CTP	Cameron, Elk	30 min
Jul 18, 5:11 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Centre, Clinton, Lycoming	64 min
Jul 18, 5:26 PM EDT	Special Weather Statement	CTP	Elk	19 min
Jul 18, 6:12 PM EDT	Special Weather Statement	CTP	Lycoming	33 min
Jul 18, 6:19 PM EDT	Special Weather Statement	CTP	Adams, York	26 min
Jul 18, 6:48 PM EDT	Special Weather Statement	CTP	Adams	27 min
Jul 18, 6:54 PM EDT	Special Weather Statement	CTP	Snyder, Union	36 min

Nearby

Heat Advisories in Pennsylvania, 2013 Every heat advisory in 2013

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.