Alert archive / Pennsylvania / Frost Advisories in 2009
Frost Advisory 3, NWS State College, PA
NWS State College, PA issued this frost advisory at May 10, 2009, 2:37 AM EDT for 5 counties in Pennsylvania. It took effect at May 11, 2009, 2:00 AM EDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- May 10, 2009, 2:37 AM EDT (06:37 UTC)
- In effect from
- May 11, 2009, 2:00 AM EDT
- Expired
- May 11, 2009, 8:00 AM EDT
- In force
- 6 hr
- Issued by
- NWS State College, PA
Counties Centre County, PA, Clinton County, PA, Lycoming County, PA, Sullivan County, PA, Tioga County, PA
The radar
The State College radar (KCCX), 78 km from the middle of the area, began a volume at 06:38 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
Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 6.6 hours before the alert went out and 213 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
- 479 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this frost advisory 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 frost advisory went out at May 9, 7:54 PM EDT, 6 hours 43 minutes earlier.
Area forecast discussion, May 9, 7:54 PM EDT, 6 hours 43 minutes before
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</html>Hazardous weather outlook, May 9, 3:42 AM EDT, 22 hours 55 minutes before
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</html>Nearby
Frost Advisories in Pennsylvania, 2009Every frost advisory 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.