Alert archive / California / Wind Advisories in 2021

Wind Advisory 29, NWS Medford, OR

November 9, 2021Siskiyou County, California

NWS Medford, OR issued this wind advisory at Nov 9, 2021, 4:05 AM PST for Siskiyou County, California. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Nov 9, 2021, 4:05 AM PST (12:05 UTC)
Expired
Nov 9, 2021, 7:00 AM PST
In force
3 hr
Issued by
NWS Medford, OR

County Siskiyou County, CA

The radar

The Medford radar (KMAX), 56 km from the middle of the area, began a volume at 12:09 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 12:00Z, 0.1 hours before the alert went out and 89 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, Medford/Jackson, OR at 12:00Z on 2021-11-09Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Medford/Jackson, OR at 12:00Z on 2021-11-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 156 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
829 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
156 m²/s²
0-3 km storm-relative helicity
815 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

226 
WWUS76 KMFR 091205
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
405 AM PST Tue Nov 9 2021

CAZ081-091500-
/O.EXP.KMFR.HW.W.0013.000000T0000Z-211109T1200Z/
/O.EXP.KMFR.WI.Y.0028.000000T0000Z-211109T1200Z/
/O.NEW.KMFR.WI.Y.0029.211109T1205Z-211109T1500Z/
Central Siskiyou County-
Including the cities of Weed and Yreka
405 AM PST Tue Nov 9 2021

...WIND ADVISORY IN EFFECT UNTIL 7 AM PST THIS MORNING...
...HIGH WIND WARNING HAS EXPIRED...
...WIND ADVISORY HAS EXPIRED...

* WHAT...South winds 15 to 25 mph with gusts 45 to 55 mph.

* WHERE...The Shasta Valley in and around Weed to Gazelle and
  south of Grenada. This includes the portion of Interstate 5 
  near Weed and the portion of Highway 97 southwest of Grass Lake 
  to Weed in Central Siskiyou County.

* WHEN...Until 7 AM PST this morning.

* IMPACTS...Gusty winds could blow around unsecured objects. Tree
  limbs could be blown down and a few power outages may result.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

ORZ026-091315-
/O.EXP.KMFR.HW.W.0013.000000T0000Z-211109T1200Z/
/O.EXP.KMFR.WI.Y.0028.000000T0000Z-211109T1200Z/
Jackson County-
Including the cities of Medford and Ashland
405 AM PST Tue Nov 9 2021

...HIGH WIND WARNING HAS EXPIRED...
...WIND ADVISORY HAS EXPIRED...

Wind speed has fallen to below advisory level and is expected to 
remain below advisory level through the day.

$$

ORZ021-022-091315-
/O.EXP.KMFR.HW.W.0013.000000T0000Z-211109T1200Z/
South Central Oregon Coast-Curry County Coast-
Including the cities of Bandon, Port Orford, Harbor, 
and Gold Beach
405 AM PST Tue Nov 9 2021

...HIGH WIND WARNING HAS EXPIRED...

Wind speed has fallen to below warning level and is expected to 
remain below warning level through the day.

$$

CAZ084-ORZ029-091315-
/O.EXP.KMFR.WI.Y.0028.000000T0000Z-211109T1200Z/
Northeast Siskiyou and Northwest Modoc Counties-Klamath Basin-
Including the cities of Dorris, Newell, Macdoel, Altamont, 
and Klamath Falls
405 AM PST Tue Nov 9 2021

...WIND ADVISORY HAS EXPIRED...

Wind speed has fallen to below advisory level and is expected to 
remain below advisory level through the day.

$$

CAZ085-ORZ030-031-091500-
/O.CON.KMFR.HW.W.0013.000000T0000Z-211109T1500Z/
/O.CON.KMFR.WI.Y.0028.000000T0000Z-211109T1500Z/
Modoc County-
Northern and Eastern Klamath County and Western Lake County-
Central and Eastern Lake County-
Including the cities of Alturas, Likely, Sprague River, Adel, 
Lakeview, and Valley Falls
405 AM PST Tue Nov 9 2021

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 7 AM PST THIS
MORNING...
...WIND ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST THIS MORNING...

* WHAT...For the High Wind Warning, south winds 25 to 35 mph 
  with gusts up to 70 mph expected. For the Wind Advisory, south 
  winds 20 to 30 mph with gusts up to 50 mph expected.

* WHERE...In California, Modoc County. In Oregon, Northern and 
  Eastern Klamath County and Western Lake County and Central and 
  Eastern Lake County. For the High Wind Warning, all higher 
  terrain areas, but also along Highway 31 from Valley Falls 
  northward to Summer Lake. For the Wind Advisory, Sprague River 
  and other areas along Highway 140, US 395 and Highway 31, 
  including Alturas, Lakeview, Adel, Alkali Lake and Silver Lake.

* WHEN...Until 7 AM PST Tuesday.

* IMPACTS...Wind this strong can blow down trees and power lines 
  resulting in power outages. Travel will be difficult, 
  especially for high profile vehicles.

* View the hazard area in detail at 
  https://www.wrh.noaa.gov/map/?wfo=mfr

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$
BTL
Visit us at https://www.weather.gov/Medford
1 follow-up statement
084 
WWUS76 KMFR 091457
NPWMFR

URGENT - WEATHER MESSAGE
National Weather Service Medford OR
657 AM PST Tue Nov 9 2021

CAZ085-ORZ030-031-091600-
/O.EXP.KMFR.HW.W.0013.000000T0000Z-211109T1500Z/
/O.EXP.KMFR.WI.Y.0028.000000T0000Z-211109T1500Z/
Modoc County-
Northern and Eastern Klamath County and Western Lake County-
Central and Eastern Lake County-
Including the cities of Alturas, Likely, Sprague River, Adel, 
Lakeview, and Valley Falls
657 AM PST Tue Nov 9 2021

...HIGH WIND WARNING WILL EXPIRE AT 7 AM PST THIS MORNING...
...WIND ADVISORY WILL EXPIRE AT 7 AM PST THIS MORNING...

Wind speed has fallen to below advisory level and is expected to 
remain below advisory level through the day.

$$

CAZ081-091600-
/O.EXP.KMFR.WI.Y.0029.000000T0000Z-211109T1500Z/
Central Siskiyou County-
Including the city of Weed
657 AM PST Tue Nov 9 2021

...WIND ADVISORY WILL EXPIRE AT 7 AM PST THIS MORNING...

Wind speed has fallen to below advisory level and is expected to 
remain below advisory level through the day.

$$
BTL
Visit us at https://www.weather.gov/Medford

Nearby

Wind Advisories in California, 2021Every wind advisory in 2021

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.