Alert archive / Maine / High Surf Advisories in 2018

High Surf Advisory 2, NWS Gray, ME

October 5, 20185 counties in Maine; Rockingham County, New Hampshire

NWS Gray, ME issued this high surf advisory at Oct 5, 2018, 2:40 AM EDT for 5 counties in Maine; Rockingham County, New Hampshire. It took effect at Oct 6, 2018, 7:00 AM EDT. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued
Oct 5, 2018, 2:40 AM EDT (06:40 UTC)
In effect from
Oct 6, 2018, 7:00 AM EDT
Expired
Oct 6, 2018, 9:29 PM EDT
In force
14 hr
Issued by
NWS Gray, ME

Counties Cumberland County, ME, Knox County, ME, Lincoln County, ME, Sagadahoc County, ME, York County, ME, Rockingham County, NH

The radar

The Portland,ME radar (KGYX), 25 km from the middle of the area, began a volume at 06:42 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 00:00Z, 6.7 hours before the alert went out and 25 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-pSkew-T log-p diagram, Gray, ME at 00:00Z on 2018-10-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Gray, ME at 00:00Z on 2018-10-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 205 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
552 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
205 m²/s²
0-3 km storm-relative helicity
151 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 5, 2:35 AM EDTFrost AdvisoryGYXCumberland, Knox, Lincoln, Sagadahoc, Waldo, York25 hr
Oct 5, 2:35 AM EDTFreeze WarningGYXAndroscoggin, Franklin, Kennebec, Oxford, Somerset, Waldo25 hr
Oct 5, 3:11 PM EDTSmall Craft Advisory for Hazardous SeasGYX36 hr

Nearby

High Surf Advisories in Maine, 2018High Surf Advisories in New Hampshire, 2018Every high surf advisory 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.