Alert archive / Massachusetts / Special Weather Statements in 2012

Special Weather Statement, NWS Boston/Norton, MA

October 30, 2012Bristol County, Middlesex County, Norfolk County, Massachusetts

NWS Boston/Norton, MA issued this special weather statement at Oct 30, 2012, 5:30 AM EDT for Bristol County, Middlesex County, Norfolk County, Massachusetts. It was in force for 60 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Oct 30, 2012, 5:30 AM EDT (09:30 UTC)
Expired: Oct 30, 2012, 6:30 AM EDT
In force: 60 min
Issued by: NWS Boston/Norton, MA

Counties Bristol County, MA, Middlesex County, MA, Norfolk County, MA

The radar

The Boston radar (KBOX), 14 km from the middle of the area, began a volume at 09:29 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, 9.5 hours before the alert went out and 193 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: 14 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 779 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 384 m²/s²
0-3 km storm-relative helicity: 380 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Oct 30, 4:30 AM EDT, 1 hour earlier.

Area forecast discussion, Oct 30, 4:30 AM EDT, 1 hour before

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Hazardous weather outlook, Oct 30, 4:22 AM EDT, 1 hour 8 minutes before

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In the hours before

Local storm report, Oct 29, 11:35 PM EDT, 5 hours 55 minutes before

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Special weather statement, Oct 30, 5:30 AM EDT, 0 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
Oct 30, 12:33 AM EDT	Wind Advisory	BOX	Barnstable, Bristol, Dukes, Essex, Franklin, Hampden and 7 more	13 hr
Oct 30, 3:54 AM EDT	Coastal Flood Advisory	BOX	Barnstable, Dukes, Essex, Nantucket, Norfolk, Plymouth and 1 more	9 hr
Oct 30, 4:35 AM EDT	Gale Warning	BOX		9 hr
Oct 30, 7:15 AM EDT	Special Weather Statement	BOX	Bristol, Norfolk	90 min
Oct 30, 8:18 AM EDT	Special Weather Statement	BOX	Middlesex, Norfolk	27 min
Oct 30, 1:34 PM EDT	Special Marine Warning	BOX		41 min
Oct 30, 2:03 PM EDT	Small Craft Advisory	BOX		38 hr
Oct 30, 6:19 PM EDT	Areal Flood Advisory	BOX	Middlesex, Norfolk, Worcester	3 hr
Oct 30, 6:39 PM EDT	Special Marine Warning	BOX		66 min
Oct 30, 6:59 PM EDT	Flash Flood Warning	BOX	Bristol, Plymouth	2 hr
Oct 30, 7:11 PM EDT	Areal Flood Advisory	BOX	Barnstable, Dukes	2 hr
Oct 30, 7:34 PM EDT	Special Marine Warning	BOX		56 min
Oct 30, 7:34 PM EDT	Special Weather Statement	BOX	Plymouth	41 min
Oct 30, 7:39 PM EDT	Severe Thunderstorm Warning	BOX	Barnstable, Bristol, Norfolk, Plymouth	51 min
Oct 30, 7:50 PM EDT	Special Marine Warning	BOX		55 min
Oct 30, 8:31 AM EDT	Special Weather Statement	BOX	Hillsborough	29 min
Oct 30, 5:42 PM EDT	Special Weather Statement	BOX	Hillsborough	63 min

Nearby

Special Weather Statements in Massachusetts, 2012 Every special weather statement 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.