Alert archive / Oregon / Freeze Warnings in 2016

Freeze Warning 11, NWS Medford, OR

December 6, 2016Coos County, Curry County, Douglas County, Oregon

NWS Medford, OR issued this freeze warning at Dec 6, 2016, 3:27 AM PST for Coos County, Curry County, Douglas County, Oregon. It took effect at Dec 6, 2016, 7:00 PM PST. It was in force for 14 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 6, 2016, 3:27 AM PST (11:27 UTC)
In effect from: Dec 6, 2016, 7:00 PM PST
Expired: Dec 7, 2016, 9:00 AM PST
In force: 14 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 11:26 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, 11.5 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 665 m above ground
0-6 km bulk shear: 79 kt
0-1 km storm-relative helicity: 191 m²/s²
0-3 km storm-relative helicity: 225 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 Medford, OR wrote its last area forecast discussion before this freeze warning went out at Dec 5, 10:01 PM PST, 5 hours 26 minutes earlier.

Area forecast discussion, Dec 5, 10:01 PM PST, 5 hours 26 minutes before

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In the hours before

Local storm report, Dec 5, 11:01 PM PST, 4 hours 26 minutes before

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Local storm report, Dec 6, 12:37 AM PST, 2 hours 50 minutes before

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Local storm report, Dec 6, 12:39 AM PST, 2 hours 48 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
Dec 6, 2:08 AM PST	Gale Watch	MFR		13 hr
Dec 6, 3:27 AM PST	Frost Advisory	MFR	Coos, Curry, Douglas, Josephine	29 hr
Dec 6, 9:14 AM PST	Small Craft Advisory	MFR		6 hr
Dec 6, 1:20 PM PST	High Wind Watch	MFR	Klamath, Lake	39 hr
Dec 6, 2:44 PM PST	Winter Storm Watch	MFR	Coos, Curry, Douglas, Jackson, Josephine, Klamath and 1 more	26 hr
Dec 6, 2:54 PM PST	Gale Warning	MFR		48 hr
Dec 6, 2:54 PM PST	Small Craft Advisory	MFR		3 days
Dec 6, 2:54 PM PST	Small Craft Advisory for Hazardous Seas	MFR		7 hr

Nearby

Freeze Warnings in Oregon, 2016 Every freeze warning in 2016

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.