Alert archive / Pennsylvania / Freezing Rain Advisories in 2010
Freezing Rain Advisory 1, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this freezing rain advisory at Dec 11, 2010, 3:06 PM EST for Morris County, Sussex County, Warren County, New Jersey; 4 counties in Pennsylvania. It took effect at Dec 11, 2010, 10:00 PM EST. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- Dec 11, 2010, 3:06 PM EST (20:06 UTC)
- In effect from
- Dec 11, 2010, 10:00 PM EST
- Expired
- Dec 12, 2010, 8:00 AM EST
- In force
- 10 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Morris County, NJ, Sussex County, NJ, Warren County, NJ, Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 123 km from the middle of the area, began a volume at 20:04 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
Albany, NY (KALY), launched 12:00Z, 8.1 hours before the alert went out and 229 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
- 901 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 172 m²/s²
- 0-3 km storm-relative helicity
- 251 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this freezing rain advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this freezing rain advisory went out at Dec 11, 11:14 AM EST, 3 hours 52 minutes earlier.
Area forecast discussion, Dec 11, 11:14 AM EST, 3 hours 52 minutes before
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</html>The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 11, 4:06 AM EST | Small Craft Advisory | PHI | 60 hr |
Nearby
Freezing Rain Advisories in Pennsylvania, 2010Freezing Rain Advisories in New Jersey, 2010Every freezing rain advisory in 2010
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.