Alert archive / Pennsylvania / Flash Flood Watches in 2014

Flash Flood Watch 11, NWS State College, PA

July 3, 201418 counties in Pennsylvania

NWS State College, PA issued this flash flood watch at Jul 3, 2014, 3:10 AM EDT for 18 counties in Pennsylvania. It took effect at Jul 3, 2014, 1:00 PM EDT. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued: Jul 3, 2014, 3:10 AM EDT (07:10 UTC)
In effect from: Jul 3, 2014, 1:00 PM EDT
Expired: Jul 4, 2014, 5:00 AM EDT
In force: 16 hr
Issued by: NWS State College, PA
Flood severity: None

Counties Adams County, PA, Columbia County, PA, Cumberland County, PA, Dauphin County, PA, Franklin County, PA, Juniata County, PA, Lancaster County, PA, Lebanon County, PA, Lycoming 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), 99 km from the middle of the area, began a volume at 07:11 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

Washington/Dulle, VA (KIAD), launched 00:00Z, 7.2 hours before the alert went out and 193 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: 291 J/kg
Mixed-layer CIN: -172 J/kg
Mixed-layer LCL: 1753 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 73 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch 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 flash flood watch went out at Jul 3, 2:03 AM EDT, 1 hour 7 minutes earlier.

Area forecast discussion, Jul 3, 2:03 AM EDT, 1 hour 7 minutes before

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Hazardous weather outlook, Jul 2, 9:29 PM EDT, 5 hours 41 minutes before

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      <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.
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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 2, 8:18 PM EDT	Special Weather Statement	CTP	Northumberland	27 min
Jul 3, 12:03 PM EDT	Special Weather Statement	CTP	Clearfield	42 min
Jul 3, 12:47 PM EDT	Special Weather Statement	CTP	Clearfield	43 min
Jul 3, 12:56 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clearfield	64 min
Jul 3, 1:13 PM EDT	Special Weather Statement	CTP	Cameron	47 min
Jul 3, 1:15 PM EDT	Special Weather Statement	CTP	Blair	60 min
Jul 3, 1:32 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Huntingdon, Mifflin	58 min
Jul 3, 1:36 PM EDT	Special Weather Statement	CTP	Potter	24 min
Jul 3, 1:47 PM EDT	Special Weather Statement	CTP	Clinton	28 min
Jul 3, 2:02 PM EDT	Special Weather Statement	CTP	Centre	43 min
Jul 3, 2:04 PM EDT	Special Weather Statement	CTP	Franklin	56 min
Jul 3, 2:08 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming, Potter, Tioga	67 min
Jul 3, 2:14 PM EDT	Special Weather Statement	CTP	Centre, Clinton	46 min
Jul 3, 2:21 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Franklin	54 min
Jul 3, 2:27 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Huntingdon, Lycoming, Mifflin, Snyder and 1 more	63 min
Jul 3, 2:30 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming, Tioga	60 min
Jul 3, 2:39 PM EDT	Special Weather Statement	CTP	Lebanon	36 min
Jul 3, 2:48 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Cumberland, Franklin, Fulton, Huntingdon, Juniata and 3 more	57 min
Jul 3, 3:00 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lebanon, Schuylkill	48 min
Jul 3, 3:16 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Columbia, Lycoming, Montour, Northumberland, Sullivan and 1 more	59 min
Jul 3, 3:17 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Franklin	58 min
Jul 3, 3:34 PM EDT	Special Weather Statement	CTP	Cameron, Clearfield, Elk, McKean	26 min
Jul 3, 3:36 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Montour, Northumberland, Schuylkill	54 min
Jul 3, 3:36 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Dauphin, Juniata, Mifflin, Montour, Northumberland and 3 more	54 min
Jul 3, 4:14 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming, Montour, Sullivan	46 min
Jul 3, 4:27 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Montour, Northumberland, Snyder	63 min
Jul 3, 4:36 PM EDT	Special Weather Statement	CTP	Dauphin	24 min
Jul 3, 4:45 PM EDT	Special Weather Statement	CTP	Perry	45 min
Jul 3, 5:11 PM EDT	Areal Flood Advisory	CTP	Columbia, Dauphin, Northumberland, Schuylkill	3 hr
Jul 3, 5:20 PM EDT	Severe Thunderstorm Warning	CTP	Schuylkill	55 min
Jul 3, 5:32 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	58 min

Nearby

Flash Flood Watches in Pennsylvania, 2014 Every flash flood watch in 2014

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.