Alert archive / Maine / Winter Storm Warnings in 2017

Winter Storm Warning 14, NWS Gray, ME

December 24, 201711 counties in Maine; 10 counties in New Hampshire

NWS Gray, ME issued this winter storm warning at Dec 24, 2017, 2:51 AM EST for 11 counties in Maine; 10 counties in New Hampshire. It took effect at Dec 24, 2017, 11:00 PM EST. It was in force for 16 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Dec 24, 2017, 2:51 AM EST (07:51 UTC)
In effect from: Dec 24, 2017, 11:00 PM EST
Expired: Dec 25, 2017, 2:43 PM EST
In force: 16 hr
Issued by: NWS Gray, ME

All 21 counties

Androscoggin County, ME, Cumberland County, ME, Franklin County, ME, Kennebec County, ME, Knox County, ME, Lincoln County, ME, Oxford County, ME, Sagadahoc County, ME, Somerset County, ME, Waldo 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), 39 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

Albany, NY (KALY), launched 00:00Z, 7.9 hours before the alert went out and 285 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: 569 m above ground
0-6 km bulk shear: 82 kt
0-1 km storm-relative helicity: -185 m²/s²
0-3 km storm-relative helicity: 80 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 winter storm warning 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 winter storm warning went out at Dec 23, 11:54 PM EST, 2 hours 57 minutes earlier.

Area forecast discussion, Dec 23, 11:54 PM EST, 2 hours 57 minutes before

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Hazardous weather outlook, Dec 23, 8:50 PM EST, 6 hours 1 minute before

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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, 2:49 AM EST	Gale Warning	GYX		67 hr
Dec 24, 11:37 AM EST	Storm Warning	GYX		29 hr

Nearby

Winter Storm Warnings in Maine, 2017 Winter Storm Warnings in New Hampshire, 2017 Every winter storm warning in 2017

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.