Alert archive / Pennsylvania / Flash Flood Watches in 2006

Flash Flood Watch 5, NWS State College, PA

July 12, 200630 counties in Pennsylvania

NWS State College, PA issued this flash flood watch at Jul 12, 2006, 3:46 AM EDT for 30 counties in Pennsylvania. It took effect at Jul 12, 2006, 6:00 AM EDT. It was in force for 22 hr.

The area

The counties it named.

The facts

Issued: Jul 12, 2006, 3:46 AM EDT (07:46 UTC)
In effect from: Jul 12, 2006, 6:00 AM EDT
Expired: Jul 13, 2006, 3:59 AM EDT
In force: 22 hr
Issued by: NWS State College, PA
Flood severity: None

All 30 counties

Bedford County, PA, Blair County, PA, Cambria County, PA, Cameron County, PA, Centre County, PA, Clearfield County, PA, Clinton County, PA, Columbia County, PA, Cumberland County, PA, Dauphin County, PA, Elk County, PA, Franklin County, PA, Fulton County, PA, Huntingdon County, PA, Juniata County, PA, Lebanon County, PA, Lycoming County, PA, McKean County, PA, Mifflin County, PA, Montour County, PA, Northumberland County, PA, Perry County, PA, Potter County, PA, Schuylkill County, PA, Snyder County, PA, Somerset County, PA, Sullivan County, PA, Tioga County, PA, Union County, PA, Warren County, PA

The radar

The State College radar (KCCX), 34 km from the middle of the area, began a volume at 07:46 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

Pittsburgh, PA (KPIT), launched 00:00Z, 7.8 hours before the alert went out and 214 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: 103 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 1136 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 22 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 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 12, 3:26 AM EDT, 20 minutes earlier.

Area forecast discussion, Jul 12, 3:26 AM EDT, 20 minutes before

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Hazardous weather outlook, Jul 11, 5:09 AM EDT, 22 hours 37 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
Jul 12, 5:56 PM EDT	Severe Thunderstorm Warning	CTP	Mifflin	49 min
Jul 12, 6:06 PM EDT	Severe Thunderstorm Warning	CTP	Juniata	54 min
Jul 12, 6:38 PM EDT	Severe Thunderstorm Warning	CTP	Snyder	67 min
Jul 12, 6:51 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Northumberland	39 min
Jul 12, 7:10 PM EDT	Severe Thunderstorm Warning	CTP	Schuylkill	80 min
Jul 12, 7:27 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin	48 min
Jul 12, 7:49 PM EDT	Severe Thunderstorm Warning	CTP	Lebanon	56 min

Nearby

Flash Flood Watches in Pennsylvania, 2006 Every flash flood watch in 2006

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.