Alert archive / Oregon / High Surf Advisories in 2017

High Surf Advisory 8, NWS Medford, OR

April 6, 2017Coos County, Curry County, Douglas County, Oregon

NWS Medford, OR issued this high surf advisory at Apr 6, 2017, 3:34 AM PDT for Coos County, Curry County, Douglas County, Oregon. It took effect at Apr 7, 2017, 5:00 AM PDT. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued: Apr 6, 2017, 3:34 AM PDT (10:34 UTC)
In effect from: Apr 7, 2017, 5:00 AM PDT
Expired: Apr 7, 2017, 8:44 PM PDT
In force: 16 hr
Issued by: NWS Medford, OR

Counties Coos County, OR, Curry County, OR, Douglas County, OR

The radar

The Medford radar (KMAX), 135 km from the middle of the area, began a volume at 10:34 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

Medford/Jackson, OR (KMFR), launched 00:00Z, 10.6 hours before the alert went out and 108 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: 18 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 2316 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 90 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 high surf advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Medford, OR wrote its last area forecast discussion before this high surf advisory went out at Apr 6, 3:09 AM PDT, 25 minutes earlier.

Area forecast discussion, Apr 6, 3:09 AM PDT, 25 minutes before

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The office that day

Everything else NWS Medford, OR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 6, 2:21 AM PDT	Winter Storm Watch	MFR	Siskiyou	12 hr
Apr 6, 2:26 PM PDT	Winter Storm Warning	MFR	Siskiyou	38 hr
Apr 6, 2:26 PM PDT	Winter Weather Advisory	MFR	Siskiyou	8 hr

Nearby

High Surf Advisories in Oregon, 2017 Every high surf advisory 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.