Alert archive / Massachusetts / Coastal Flood Advisories in 2012

Coastal Flood Advisory 9, NWS Boston/Norton, MA

October 30, 20127 counties in Massachusetts

NWS Boston/Norton, MA issued this coastal flood advisory at Oct 30, 2012, 3:54 AM EDT for 7 counties in Massachusetts. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: Oct 30, 2012, 3:54 AM EDT (07:54 UTC)
Expired: Oct 30, 2012, 1:00 PM EDT
In force: 9 hr
Issued by: NWS Boston/Norton, MA

Counties Barnstable County, MA, Dukes County, MA, Essex County, MA, Nantucket County, MA, Norfolk County, MA, Plymouth County, MA, Suffolk County, MA

The radar

The Boston radar (KBOX), 37 km from the middle of the area, began a volume at 07:56 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, 7.9 hours before the alert went out and 216 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

What forecasters said that day

The local office's own words before this coastal flood 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 coastal flood advisory went out at Oct 30, 3:48 AM EDT, 6 minutes earlier.

Area forecast discussion, Oct 30, 3:48 AM EDT, 6 minutes before

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Hazardous weather outlook, Oct 30, 12:41 AM EDT, 3 hours 13 minutes before

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In the hours before

Local storm report, Oct 29, 10:30 PM EDT, 5 hours 24 minutes before

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Local storm report, Oct 29, 11:35 PM EDT, 4 hours 19 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, 4:35 AM EDT	Gale Warning	BOX		9 hr
Oct 30, 5:30 AM EDT	Special Weather Statement	BOX	Bristol, Middlesex, Norfolk	60 min
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

Nearby

Coastal Flood Advisories in Massachusetts, 2012 Every coastal flood 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.