Alert archive / Massachusetts / Winter Storm Watches in 2009

Winter Storm Watch 2, NWS Boston/Norton, MA

January 9, 200913 counties in Massachusetts; 5 counties in Rhode Island; Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut

NWS Boston/Norton, MA issued this winter storm watch at Jan 9, 2009, 4:25 AM EST for 13 counties in Massachusetts; 5 counties in Rhode Island; Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut. It took effect at Jan 10, 2009, 4:00 PM EST. It was in force for .

The area

The counties it named.

The facts

Issued: Jan 9, 2009, 4:25 AM EST (09:25 UTC)
In effect from: Jan 10, 2009, 4:00 PM EST
Expired: Jan 10, 2009, 4:39 AM EST
In force
Issued by: NWS Boston/Norton, MA

Counties Capitol Planning Region, CT, Northeastern Connecticut Planning Region, CT, Barnstable County, MA, Bristol County, MA, Dukes County, MA, Essex County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Nantucket County, MA, Norfolk County, MA, Plymouth County, MA, Suffolk County, MA, Worcester County, MA, Bristol County, RI, Kent County, RI, Newport County, RI, Providence County, RI, Washington County, RI

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 9.4 hours before the alert went out and 168 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: 1287 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 110 m²/s²
0-3 km storm-relative helicity: 141 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 storm watch 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 storm watch went out at Jan 9, 4:23 AM EST, 2 minutes earlier.

Area forecast discussion, Jan 9, 4:23 AM EST, 2 minutes before

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Hazardous weather outlook, Jan 9, 4:01 AM EST, 24 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 8, 7:48 PM EST	Small Craft Advisory	BOX		39 hr

Nearby

Winter Storm Watches in Massachusetts, 2009 Winter Storm Watches in Rhode Island, 2009 Winter Storm Watches in Connecticut, 2009 Every winter storm watch in 2009

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.