Alert archive / Pennsylvania / Flood Watches in 2015

Flood Watch 3, NWS State College, PA

June 19, 201512 counties in Pennsylvania

NWS State College, PA issued this flood watch at Jun 19, 2015, 2:41 PM EDT for 12 counties in Pennsylvania. It took effect at Jun 20, 2015, 8:00 PM EDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: Jun 19, 2015, 2:41 PM EDT (18:41 UTC)
In effect from: Jun 20, 2015, 8:00 PM EDT
Expired: Jun 21, 2015, 5:21 AM EDT
In force: 9 hr
Issued by: NWS State College, PA
Flood severity: None

Counties Adams County, PA, Bedford County, PA, Cumberland County, PA, Dauphin County, PA, Franklin County, PA, Fulton County, PA, Lancaster County, PA, Lebanon County, PA, Perry County, PA, Schuylkill County, PA, Somerset County, PA, York County, PA

The radar

The State College radar (KCCX), 105 km from the middle of the area, began a volume at 18:41 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, 6.7 hours before the alert went out and 126 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: 3 J/kg
Mixed-layer CIN: -166 J/kg
Mixed-layer LCL: 1100 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 92 m²/s²
0-3 km storm-relative helicity: 116 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 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 flood watch went out at Jun 19, 2:31 PM EDT, 10 minutes earlier.

Area forecast discussion, Jun 19, 2:31 PM EDT, 10 minutes before

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Hazardous weather outlook, Jun 19, 11:23 AM EDT, 3 hours 18 minutes before

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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 18, 8:33 PM EDT	Special Weather Statement	CTP	Northumberland	27 min
Jun 18, 10:16 PM EDT	Special Weather Statement	CTP	Mifflin	29 min
Jun 18, 10:26 PM EDT	Special Weather Statement	CTP	Somerset	34 min
Jun 18, 10:59 PM EDT	Special Weather Statement	CTP	Somerset	46 min
Jun 18, 11:46 PM EDT	Special Weather Statement	CTP	Dauphin, Perry	44 min
Jun 18, 11:58 PM EDT	Special Weather Statement	CTP	Fulton	32 min
Jun 19, 12:36 AM EDT	Special Weather Statement	CTP	York	24 min
Jun 19, 1:21 AM EDT	Special Weather Statement	CTP	Adams, Lancaster, York	69 min

Nearby

Flood Watches in Pennsylvania, 2015 Every flood watch in 2015

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.