Alert archive / Pennsylvania / Winter Storm Watches in 2011
Winter Storm Watch 3, NWS State College, PA
NWS State College, PA issued this winter storm watch at Feb 21, 2011, 5:06 AM EST for 10 counties in Pennsylvania. It took effect at Feb 21, 2011, 5:00 PM EST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Feb 21, 2011, 5:06 AM EST (10:06 UTC)
- In effect from
- Feb 21, 2011, 5:00 PM EST
- Expired
- Feb 21, 2011, 1:22 PM EST
- In force
- Issued by
- NWS State College, PA
Counties Adams County, PA, Bedford County, PA, Blair County, PA, Cambria County, PA, Cumberland County, PA, Franklin County, PA, Fulton County, PA, Huntingdon County, PA, Somerset County, PA, York County, PA
The radar
The State College radar (KCCX), 90 km from the middle of the area, began a volume at 10:12 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, 10.1 hours before the alert went out and 184 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
- 455 m above ground
- 0-6 km bulk shear
- 73 kt
- 0-1 km storm-relative helicity
- 615 m²/s²
- 0-3 km storm-relative helicity
- 1010 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter storm 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 winter storm watch went out at Feb 21, 2:37 AM EST, 2 hours 29 minutes earlier.
Area forecast discussion, Feb 21, 2:37 AM EST, 2 hours 29 minutes before
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</html>Hazardous weather outlook, Feb 21, 5:06 AM EST, 0 minutes before
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</html>The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 21, 1:22 PM EST | Winter Storm Warning | CTP | Adams, Bedford, Blair, Cambria, Cumberland, Franklin and 4 more | 17 hr |
| Feb 21, 1:22 PM EST | Winter Weather Advisory | CTP | Centre, Clearfield, Dauphin, Juniata, Lancaster, Lebanon and 3 more | 17 hr |
Nearby
Winter Storm Watches in Pennsylvania, 2011Every winter storm watch in 2011
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.