Alert archive / Oregon / Flood Watches in 2015

Flood Watch 3, NWS Medford, OR

December 8, 20154 counties in Oregon; Siskiyou County, California

NWS Medford, OR issued this flood watch at Dec 8, 2015, 12:40 PM PST for 4 counties in Oregon; Siskiyou County, California. It took effect at Dec 9, 2015, 1:00 AM PST. It was in force for 35 hr.

The area

The counties it named.

The facts

Issued: Dec 8, 2015, 12:40 PM PST (20:40 UTC)
In effect from: Dec 9, 2015, 1:00 AM PST
Expired: Dec 10, 2015, 11:53 AM PST
In force: 35 hr
Issued by: NWS Medford, OR
Flood severity: None

Counties Siskiyou County, CA, Coos County, OR, Curry County, OR, Douglas County, OR, Josephine County, OR

The radar

The Medford radar (KMAX), 86 km from the middle of the area, began a volume at 20:43 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

Salem/Mcnary, OR (KSLE), launched 12:00Z, 8.7 hours before the alert went out and 264 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: 2 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 707 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 298 m²/s²
0-3 km storm-relative helicity: 510 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 flood watch 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 flood watch went out at Dec 8, 8:25 AM PST, 4 hours 15 minutes earlier.

Area forecast discussion, Dec 8, 8:25 AM PST, 4 hours 15 minutes before

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In the hours before

Local storm report, Dec 8, 8:24 AM PST, 4 hours 16 minutes before

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Local storm report, Dec 8, 9:11 AM PST, 3 hours 29 minutes before

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      <div class="status" id="status">Temporary Notice</div>
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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 8, 3:59 AM PST	High Wind Warning	MFR	Coos, Curry, Douglas, Klamath, Lake	30 hr
Dec 8, 3:59 AM PST	Wind Advisory	MFR	Klamath, Lake	30 hr
Dec 8, 2:00 PM PST	High Wind Watch	MFR	Coos, Curry, Douglas, Klamath, Lake	14 hr
Dec 8, 2:12 PM PST	Gale Watch	MFR		15 hr
Dec 8, 2:12 PM PST	Hazardous Seas Watch	MFR		15 hr

Nearby

Flood Watches in Oregon, 2015 Flood Watches in California, 2015 Every flood watch in 2015

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.