Alert archive / Massachusetts / Winter Weather Advisories in 2012
Winter Weather Advisory 16, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this winter weather advisory at Dec 16, 2012, 4:07 AM EST for 6 counties in Massachusetts. It took effect at Dec 16, 2012, 12:00 PM EST. It was in force for 40 hr.
The area
The counties it named.
The facts
- Issued
- Dec 16, 2012, 4:07 AM EST (09:07 UTC)
- In effect from
- Dec 16, 2012, 12:00 PM EST
- Expired
- Dec 18, 2012, 3:56 AM EST
- In force
- 40 hr
- Issued by
- NWS Boston/Norton, MA
Counties Essex County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Worcester County, MA
The radar
The Boston radar (KBOX), 89 km from the middle of the area, began a volume at 09:13 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 00:00Z, 9.1 hours before the alert went out and 152 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
- 1143 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 161 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 16, 12:49 AM EST, 3 hours 18 minutes earlier.
Area forecast discussion, Dec 16, 12:49 AM EST, 3 hours 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 16, 4:03 AM EST | Coastal Flood Statement | BOX | Barnstable, Essex, Nantucket, Norfolk, Plymouth, Suffolk | 11 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.