Alert archive / Pennsylvania / Flash Flood Watches in 2014

Flash Flood Watch 8, NWS State College, PA

June 13, 201417 counties in Pennsylvania

NWS State College, PA issued this flash flood watch at Jun 13, 2014, 11:48 AM EDT for 17 counties in Pennsylvania. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued: Jun 13, 2014, 11:48 AM EDT (15:48 UTC)
Expired: Jun 13, 2014, 10:00 PM EDT
In force: 10 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, Union County, PA, York County, PA

The radar

The State College radar (KCCX), 103 km from the middle of the area, began a volume at 15:48 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 nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 3.8 hours before the alert went out and 186 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: 523 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 527 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 36 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 Jun 13, 7:50 AM EDT, 3 hours 58 minutes earlier.

Area forecast discussion, Jun 13, 7:50 AM EDT, 3 hours 58 minutes before

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Hazardous weather outlook, Jun 13, 5:35 AM EDT, 6 hours 13 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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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
Jun 12, 8:32 PM EDT	Special Weather Statement	CTP	Fulton	28 min
Jun 12, 8:46 PM EDT	Special Weather Statement	CTP	Elk, McKean	59 min
Jun 12, 9:03 PM EDT	Areal Flood Warning	CTP	Bedford, Somerset	3 hr
Jun 12, 9:40 PM EDT	Areal Flood Advisory	CTP	McKean, Warren	3 hr
Jun 12, 10:20 PM EDT	Flash Flood Warning	CTP	McKean, Warren	6 hr
Jun 13, 12:00 AM EDT	Areal Flood Advisory	CTP	Adams, Cumberland	3 hr
Jun 13, 1:27 AM EDT	Flash Flood Warning	CTP	Cumberland	3 hr
Jun 13, 2:15 AM EDT	Areal Flood Advisory	CTP	Juniata, Perry	2 hr
Jun 13, 4:37 AM EDT	Areal Flood Advisory	CTP	Lancaster, Lebanon	113 min
Jun 13, 4:47 AM EDT	Areal Flood Advisory	CTP	Juniata, Snyder, Union	118 min
Jun 13, 12:06 PM EDT	Areal Flood Advisory	CTP	Adams, Cumberland, Dauphin, Lancaster, Lebanon, Perry and 1 more	3 hr
Jun 13, 12:08 PM EDT	Special Weather Statement	CTP	Lebanon	67 min
Jun 13, 12:14 PM EDT	Special Weather Statement	CTP	York	46 min
Jun 13, 12:18 PM EDT	Flash Flood Warning	CTP	Adams, Cumberland, Dauphin, Perry, York	3 hr
Jun 13, 12:25 PM EDT	Special Weather Statement	CTP	Lancaster	35 min
Jun 13, 12:52 PM EDT	Flash Flood Warning	CTP	Lancaster, Lebanon	3 hr
Jun 13, 1:30 PM EDT	Areal Flood Advisory	CTP	Elk, McKean, Warren	3 hr
Jun 13, 3:27 PM EDT	Special Weather Statement	CTP	Cambria, Cameron, Clearfield	33 min
Jun 13, 4:42 PM EDT	Special Weather Statement	CTP	York	33 min
Jun 13, 5:08 PM EDT	River Flood Warning	CTP	Cumberland, York	19 hr
Jun 13, 6:12 PM EDT	Special Weather Statement	CTP	Lancaster	33 min
Jun 13, 7:33 PM EDT	Special Weather Statement	CTP	York	27 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.