Alert archive / Massachusetts / Winter Weather Advisories in 2011

Winter Weather Advisory 7, NWS Boston/Norton, MA

January 26, 20116 counties in Massachusetts

NWS Boston/Norton, MA issued this winter weather advisory at Jan 26, 2011, 4:33 AM EST for 6 counties in Massachusetts. It took effect at Jan 26, 2011, 5:00 PM EST. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued: Jan 26, 2011, 4:33 AM EST (09:33 UTC)
In effect from: Jan 26, 2011, 5:00 PM EST
Expired: Jan 27, 2011, 9:12 AM EST
In force: 16 hr
Issued by: NWS Boston/Norton, MA

Counties Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Nantucket County, MA, Worcester County, MA

The radar

The Boston radar (KBOX), 66 km from the middle of the area, began a volume at 09:32 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

Brookhaven, NY (KOKX), launched 00:00Z, 9.6 hours before the alert went out and 169 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1259 m above ground
0-6 km bulk shear: 92 kt
0-1 km storm-relative helicity: -79 m²/s²
0-3 km storm-relative helicity: -1 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Jan 25, 10:33 PM EST, 6 hours earlier.

Area forecast discussion, Jan 25, 10:33 PM EST, 6 hours before

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Hazardous weather outlook, Jan 25, 5:40 PM EST, 10 hours 53 minutes before

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The office that day

Everything else NWS Boston/Norton, MA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 26, 4:52 AM EST	Gale Warning	BOX		33 hr
Jan 26, 11:03 AM EST	Wind Advisory	BOX	Nantucket	22 hr
Jan 26, 11:04 AM EST	Storm Warning	BOX		22 hr
Jan 26, 3:50 PM EST	Coastal Flood Warning	BOX	Barnstable, Essex, Norfolk, Plymouth, Suffolk	16 hr

Nearby

Winter Weather Advisories in Massachusetts, 2011 Every winter weather advisory 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.