Alert archive / Pennsylvania / Flash Flood Watches in 2014

Flash Flood Watch 5, NWS State College, PA

May 28, 2014Bedford County, Somerset County, Pennsylvania

NWS State College, PA issued this flash flood watch at May 28, 2014, 6:23 AM EDT for Bedford County, Somerset County, Pennsylvania. It took effect at May 28, 2014, 10:00 AM EDT. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued: May 28, 2014, 6:23 AM EDT (10:23 UTC)
In effect from: May 28, 2014, 10:00 AM EDT
Expired: May 28, 2014, 9:13 PM EDT
In force: 11 hr
Issued by: NWS State College, PA
Flood severity: None

Counties Bedford County, PA, Somerset County, PA

The radar

The State College radar (KCCX), 122 km from the middle of the area, began a volume at 10:24 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 (KAGC), launched 00:00Z, 10.4 hours before the alert went out and 123 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: 874 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 984 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 189 m²/s²
0-3 km storm-relative helicity: 209 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 6.3

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 May 28, 5:50 AM EDT, 33 minutes earlier.

Area forecast discussion, May 28, 5:50 AM EDT, 33 minutes before

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Hazardous weather outlook, May 28, 4:29 AM EDT, 1 hour 54 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
May 27, 8:02 PM EDT	Special Weather Statement	CTP	Mifflin	43 min
May 28, 12:12 AM EDT	Special Weather Statement	CTP	Somerset	18 min
May 28, 12:32 AM EDT	Severe Thunderstorm Warning	CTP	Somerset	28 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.