Alert archive / Pennsylvania / Flash Flood Watches in 2009
Flash Flood Watch 2, NWS State College, PA
NWS State College, PA issued this flash flood watch at Jun 19, 2009, 1:14 PM EDT for 4 counties in Pennsylvania. It took effect at Jun 19, 2009, 8:00 PM EDT. It was in force for 14 hr.
The area
The counties it named.
The facts
- Issued
- Jun 19, 2009, 1:14 PM EDT (17:14 UTC)
- In effect from
- Jun 19, 2009, 8:00 PM EDT
- Expired
- Jun 20, 2009, 9:30 AM EDT
- In force
- 14 hr
- Issued by
- NWS State College, PA
- Flood severity
- None
Counties Bedford County, PA, Blair County, PA, Cambria County, PA, Somerset County, PA
The radar
The State College radar (KCCX), 93 km from the middle of the area, began a volume at 17:14 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 12:00Z, 5.2 hours before the alert went out and 125 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 883 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 133 m²/s²
- 0-3 km storm-relative helicity
- 158 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 19, 11:20 AM EDT, 1 hour 54 minutes earlier.
Area forecast discussion, Jun 19, 11:20 AM EDT, 1 hour 54 minutes before
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</html>Hazardous weather outlook, Jun 19, 4:54 AM EDT, 8 hours 20 minutes before
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Flash Flood Watches in Pennsylvania, 2009Every flash flood watch in 2009
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.