Alert archive / Connecticut / Special Weather Statements in 2018

Special Weather Statement, NWS Boston/Norton, MA

November 21, 2018

NWS Boston/Norton, MA issued this special weather statement at Nov 21, 2018, 4:12 PM EST. It was in force for 63 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: Nov 21, 2018, 4:12 PM EST (21:12 UTC)
Expired: Nov 21, 2018, 5:15 PM EST
In force: 63 min
Issued by: NWS Boston/Norton, MA

The radar

The Brookhaven radar (KOKX), 119 km from the middle of the area, began a volume at 21:18 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, 9.2 hours before the alert went out and 118 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: 1210 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 175 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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
Nov 21, 3:54 AM EST	Wind Chill Advisory	BOX	Franklin, Hampden, Hampshire	30 hr
Nov 21, 2:22 PM EST	Special Weather Statement	BOX	Franklin	53 min
Nov 21, 2:43 PM EST	Special Weather Statement	BOX	Hampden, Hampshire	92 min
Nov 21, 3:32 PM EST	Special Weather Statement	BOX	Middlesex, Worcester	58 min
Nov 21, 4:19 PM EST	Special Weather Statement	BOX	Plymouth, Worcester	56 min
Nov 21, 4:26 PM EST	Special Weather Statement	BOX	Essex, Middlesex, Worcester	64 min
Nov 21, 5:19 PM EST	Special Weather Statement	BOX	Bristol, Norfolk, Plymouth	56 min
Nov 21, 5:14 PM EST	Special Weather Statement	BOX	Bristol, Kent, Providence	61 min

Nearby

Special Weather Statements in Connecticut, 2018 Every special weather statement in 2018

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.