Alert archive / New Hampshire / Wind Advisories in 2020

Wind Advisory 14, NWS Gray, ME

December 24, 20207 counties in Maine; 10 counties in New Hampshire

NWS Gray, ME issued this wind advisory at Dec 24, 2020, 3:39 PM EST for 7 counties in Maine; 10 counties in New Hampshire. It took effect at Dec 25, 2020, 1:00 AM EST. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued: Dec 24, 2020, 3:39 PM EST (20:39 UTC)
In effect from: Dec 25, 2020, 1:00 AM EST
Expired: Dec 25, 2020, 3:18 PM EST
In force: 14 hr
Issued by: NWS Gray, ME

Counties Androscoggin County, ME, Cumberland County, ME, Franklin County, ME, Kennebec County, ME, Oxford County, ME, Somerset County, ME, York County, ME, Belknap County, NH, Carroll County, NH, Cheshire County, NH, Coos County, NH, Grafton County, NH, Hillsborough County, NH, Merrimack County, NH, Rockingham County, NH, Strafford County, NH, Sullivan County, NH

The radar

The Portland,ME radar (KGYX), 64 km from the middle of the area, began a volume at 20:41 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, 8.7 hours before the alert went out and 64 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: 485 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 384 m²/s²
0-3 km storm-relative helicity: 403 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 wind advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Gray, ME wrote its last area forecast discussion before this wind advisory went out at Dec 24, 9:45 AM EST, 5 hours 54 minutes earlier.

Area forecast discussion, Dec 24, 9:45 AM EST, 5 hours 54 minutes before

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Hazardous weather outlook, Dec 24, 9:40 AM EST, 5 hours 59 minutes before

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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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The office that day

Everything else NWS Gray, ME issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 24, 9:33 AM EST	High Wind Warning	GYX	Cumberland, Knox, Lincoln, Sagadahoc, Waldo, York	30 hr
Dec 24, 9:34 AM EST	Storm Warning	GYX		30 hr

Nearby

Wind Advisories in New Hampshire, 2020 Wind Advisories in Maine, 2020 Every wind advisory in 2020

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.