Alert archive / Massachusetts / Freeze Watches in 2008

Freeze Watch 2, NWS Boston/Norton, MA

October 18, 2008Middlesex County, Norfolk County, Massachusetts; Capitol Planning Region, Connecticut

NWS Boston/Norton, MA issued this freeze watch at Oct 18, 2008, 4:16 PM EDT for Middlesex County, Norfolk County, Massachusetts; Capitol Planning Region, Connecticut. It took effect at Oct 20, 2008, 2:00 AM EDT. It was in force for .

The area

The counties it named.

The facts

Issued: Oct 18, 2008, 4:16 PM EDT (20:16 UTC)
In effect from: Oct 20, 2008, 2:00 AM EDT
Expired: Oct 19, 2008, 4:25 AM EDT
In force
Issued by: NWS Boston/Norton, MA

Counties Capitol Planning Region, CT, Middlesex County, MA, Norfolk County, MA

The radar

The Boston radar (KBOX), 53 km from the middle of the area, began a volume at 20:22 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 12:00Z, 8.3 hours before the alert went out and 173 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: 939 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 77 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 freeze 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 freeze watch went out at Oct 18, 12:33 PM EDT, 3 hours 43 minutes earlier.

Area forecast discussion, Oct 18, 12:33 PM EDT, 3 hours 43 minutes before

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Hazardous weather outlook, Oct 18, 5:11 AM EDT, 11 hours 5 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 18, 4:14 AM EDT	Freeze Warning	BOX	Hampden, Middlesex, Norfolk, Worcester	24 hr
Oct 18, 4:28 AM EDT	Small Craft Advisory	BOX		66 hr
Oct 18, 4:06 PM EDT	Gale Watch	BOX		13 hr
Oct 18, 4:06 PM EDT	Gale Warning	BOX		49 hr
Oct 18, 4:06 PM EDT	Small Craft Advisory	BOX		42 hr

Nearby

Freeze Watches in Massachusetts, 2008 Freeze Watches in Connecticut, 2008 Every freeze watch in 2008

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.