Alert archive / Massachusetts / Special Weather Statements in 2013

Special Weather Statement, NWS Boston/Norton, MA

January 31, 20136 counties in Massachusetts

NWS Boston/Norton, MA issued this special weather statement at Jan 31, 2013, 9:09 AM EST for 6 counties in Massachusetts. It was in force for 51 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: Jan 31, 2013, 9:09 AM EST (14:09 UTC)
Expired: Jan 31, 2013, 10:00 AM EST
In force: 51 min
Issued by: NWS Boston/Norton, MA

Counties Essex County, MA, Middlesex County, MA, Norfolk County, MA, Plymouth County, MA, Suffolk County, MA, Worcester County, MA

The radar

The Boston radar (KBOX), 62 km from the middle of the area, began a volume at 14:09 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

Gray, ME (KGYX), launched 12:00Z, 2.2 hours before the alert went out and 165 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: 484 m above ground
0-6 km bulk shear: 76 kt
0-1 km storm-relative helicity: 647 m²/s²
0-3 km storm-relative helicity: 746 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 Jan 31, 7:29 AM EST, 1 hour 40 minutes earlier.

Area forecast discussion, Jan 31, 7:29 AM EST, 1 hour 40 minutes before

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Hazardous weather outlook, Jan 31, 4:26 AM EST, 4 hours 43 minutes before

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In the hours before

Local storm report, Jan 31, 7:35 AM EST, 1 hour 34 minutes before

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Local storm report, Jan 31, 7:37 AM EST, 1 hour 32 minutes before

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Local storm report, Jan 31, 7:47 AM EST, 1 hour 22 minutes before

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Local storm report, Jan 31, 8:42 AM EST, 27 minutes before

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Local storm report, Jan 31, 9:09 AM EST, 0 minutes before

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Special weather statement, Jan 31, 9:09 AM EST, 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
Jan 31, 1:48 AM EST	Special Weather Statement	BOX	Hampden, Hampshire	57 min
Jan 31, 5:22 AM EST	Areal Flood Advisory	BOX	Franklin, Hampden, Hampshire, Worcester	3 hr
Jan 31, 9:19 AM EST	Wind Advisory	BOX	Barnstable, Bristol, Dukes, Essex, Franklin, Hampden and 7 more	9 hr
Jan 31, 10:20 AM EST	Gale Warning	BOX		30 hr

Nearby

Special Weather Statements in Massachusetts, 2013 Every special weather statement in 2013

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.