Alert archive / Massachusetts / Winter Weather Advisories in 2012
Winter Weather Advisory 15, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this winter weather advisory at Dec 9, 2012, 3:48 PM EST for Franklin County, Hampshire County, Massachusetts. It took effect at Dec 9, 2012, 10:00 PM EST. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Dec 9, 2012, 3:48 PM EST (20:48 UTC)
- In effect from
- Dec 9, 2012, 10:00 PM EST
- Expired
- Dec 10, 2012, 3:59 AM EST
- In force
- 6 hr
- Issued by
- NWS Boston/Norton, MA
Counties Franklin County, MA, Hampshire County, MA
The radar
The Albany radar (KENX), 119 km from the middle of the area, began a volume at 20:48 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, 8.8 hours before the alert went out and 102 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
- 993 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- -88 m²/s²
- 0-3 km storm-relative helicity
- 39 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 weather advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Boston/Norton, MA wrote its last area forecast discussion before this winter weather advisory went out at Dec 9, 3:30 PM EST, 18 minutes earlier.
Area forecast discussion, Dec 9, 3:30 PM EST, 18 minutes before
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Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 9, 6:41 AM EST | Small Craft Advisory | BOX | 68 hr |
Nearby
Winter Weather Advisories in Massachusetts, 2012Every winter weather advisory in 2012
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.