Alert archive / Oregon / Winter Storm Warnings in 2010

Winter Storm Warning 19, NWS Medford, OR

November 22, 20107 counties in Oregon; Modoc County, Siskiyou County, California

NWS Medford, OR issued this winter storm warning at Nov 22, 2010, 12:48 PM PST for 7 counties in Oregon; Modoc County, Siskiyou County, California. It took effect at Nov 22, 2010, 1:00 PM PST. It was in force for 21 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
Nov 22, 2010, 12:48 PM PST (20:48 UTC)
In effect from
Nov 22, 2010, 1:00 PM PST
Expired
Nov 23, 2010, 10:00 AM PST
In force
21 hr
Issued by
NWS Medford, OR

Counties Modoc County, CA, Siskiyou County, CA, Coos County, OR, Curry County, OR, Douglas County, OR, Jackson County, OR, Josephine County, OR, Klamath County, OR, Lake County, OR

The radar

The Medford radar (KMAX), 47 km from the middle of the area, began a volume at 20:49 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

Reno, NV (KREV), launched 12:00Z, 8.8 hours before the alert went out and 489 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, Reno, NV at 12:00Z on 2010-11-22Temperature 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 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Reno, NV at 12:00Z on 2010-11-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 280 square meters per square second.1939587897117Sfc1 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
1213 m above ground
0-6 km bulk shear
78 kt
0-1 km storm-relative helicity
280 m²/s²
0-3 km storm-relative helicity
334 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 22, 2:09 AM PSTSmall Craft Advisory for WindsMFR35 hr
Nov 22, 3:11 AM PSTWinter Weather AdvisoryMFRCoos, Curry, Douglas, Jackson, Josephine, Klamath31 hr
Nov 22, 9:15 AM PSTFreeze WatchMFRCoos, Curry, Douglas5 hr
Nov 22, 2:07 PM PSTFreeze WatchMFRCoos, Curry, Douglas48 hr
Nov 22, 2:07 PM PSTFreeze WarningMFRCoos, Curry, Douglas44 hr

Nearby

Winter Storm Warnings in Oregon, 2010Winter Storm Warnings in California, 2010Every winter storm warning in 2010

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.