Alert archive / Maine / Freeze Warnings in 2017

Freeze Warning 1, NWS Gray, ME

May 20, 2017Franklin County, Oxford County, Somerset County, Maine; Carroll County, Coos County, New Hampshire

NWS Gray, ME issued this freeze warning at May 20, 2017, 3:27 AM EDT for Franklin County, Oxford County, Somerset County, Maine; Carroll County, Coos County, New Hampshire. It took effect at May 21, 2017, 2:00 AM EDT. It was in force for 6 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: May 20, 2017, 3:27 AM EDT (07:27 UTC)
In effect from: May 21, 2017, 2:00 AM EDT
Expired: May 21, 2017, 7:31 AM EDT
In force: 6 hr
Issued by: NWS Gray, ME

Counties Franklin County, ME, Oxford County, ME, Somerset County, ME, Carroll County, NH, Coos County, NH

The radar

The Portland,ME radar (KGYX), 99 km from the middle of the area, began a volume at 07:27 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, 7.5 hours before the alert went out and 335 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: 1156 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: -76 m²/s²
0-3 km storm-relative helicity: 127 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 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 freeze warning went out at May 19, 6:30 PM EDT, 8 hours 57 minutes earlier.

Area forecast discussion, May 19, 6:30 PM EDT, 8 hours 57 minutes before

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Hazardous weather outlook, May 19, 3:15 PM EDT, 12 hours 12 minutes 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
May 20, 3:16 AM EDT	Beach Hazards Statement	GYX	Cumberland, Knox, Lincoln, Sagadahoc, Waldo, York	17 hr
May 20, 3:27 AM EDT	Frost Advisory	GYX	Androscoggin, Cumberland, Franklin, Somerset, York	28 hr

Nearby

Freeze Warnings in Maine, 2017 Freeze Warnings in New Hampshire, 2017 Every freeze 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.