Alert archive / Oregon / High Wind Warnings in 2020
High Wind Warning 9, NWS Medford, OR
NWS Medford, OR issued this high wind warning at Dec 29, 2020, 1:09 PM PST for Modoc County, California; Klamath County, Lake County, Oregon. It took effect at Dec 30, 2020, 10:00 AM PST. It was in force for 15 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 29, 2020, 1:09 PM PST (21:09 UTC)
- In effect from
- Dec 30, 2020, 10:00 AM PST
- Expired
- Dec 31, 2020, 1:00 AM PST
- In force
- 15 hr
- Issued by
- NWS Medford, OR
Counties Modoc County, CA, Klamath County, OR, Lake County, OR
The radar
The Medford radar (KMAX), 151 km from the middle of the area, began a volume at 21:14 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, 9.2 hours before the alert went out and 154 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1253 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- 47 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
235 WWUS76 KMFR 292109 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 109 PM PST Tue Dec 29 2020 ORZ030-031-301200- /O.UPG.KMFR.HW.A.0008.201230T2100Z-201231T0900Z/ /O.NEW.KMFR.HW.W.0009.201230T1800Z-201231T0900Z/ Northern and Eastern Klamath County and Western Lake County- Central and Eastern Lake County- 109 PM PST Tue Dec 29 2020 ...HIGH WIND WARNING IN EFFECT FROM 10 AM WEDNESDAY TO 1 AM PST THURSDAY... * WHAT...Southwest winds 35 to 45 mph with gusts up to 65 mph expected. Gusts up to 75 mph are possible over higher terrain and other more exposed areas. * WHERE...Portions of Lake and eastern Lake Counties, including highway 31 between Valley Falls and Summer Lake, Highway 395 from Valley Falls to Alkali Lake, and the high terrain of Winter Rim and the Hart and Warner Mountains. * WHEN...Winds will increase through Wednesday morning, peak in the afternoon, then diminish through the evening. * IMPACTS...Travel will be difficult, especially for high profile vehicles. Winds could damage trees and power lines. * ADDITIONAL DETAILS...Blowing snow may cause periods of reduced visibilities. * View the hazard area in detail at https://www.wrh.noaa.gov/mfr/HAZARD PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. Use caution if you must drive. && $$ CAZ085-301200- /O.NEW.KMFR.HW.W.0009.201230T1800Z-201231T0900Z/ Modoc County- 109 PM PST Tue Dec 29 2020 ...HIGH WIND WARNING IN EFFECT FROM 10 AM WEDNESDAY TO 1 AM PST THURSDAY... * WHAT...Southwest winds 35 to 45 mph with gusts up to 65 mph expected. Gusts up to 75 mph are possible over higher terrain and other more exposed areas. * WHERE...The Warner mountains of eastern Modoc County, including Highway 299 at Cedar Pass. * WHEN...Winds will increase through Wednesday morning, peak in the afternoon, then diminish through the evening. * IMPACTS...Travel will be difficult, especially for high profile vehicles. Winds could damage trees and power lines. * ADDITIONAL DETAILS...Blowing snow may cause periods of reduced visibilities. * View the hazard area in detail at https://www.wrh.noaa.gov/mfr/HAZARD PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$ CAZ081-301200- /O.NEW.KMFR.WI.Y.0028.201230T2100Z-201231T0600Z/ Central Siskiyou County- Including the city of Weed 109 PM PST Tue Dec 29 2020 ...WIND ADVISORY IN EFFECT FROM 1 PM TO 10 PM PST WEDNESDAY... * WHAT...South winds 25 to 30 mph with gusts up to 50 mph expected. * WHERE...Southern and central portions of the Shasta Valley, including Weed, Gazelle, and Grenada, and portions of Interstate 5 and Highway 97. * WHEN...From 1 PM to 10 PM PST Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. Driving may become difficult, especially for high profile vehicles. 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/mfr/HAZARD PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ Visit us at https://www.weather.gov/Medford
4 follow-up statements
266 WWUS76 KMFR 301100 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 300 AM PST Wed Dec 30 2020 CAZ085-ORZ030-031-302300- /O.CON.KMFR.HW.W.0009.201230T1800Z-201231T0900Z/ Modoc County- Northern and Eastern Klamath County and Western Lake County- Central and Eastern Lake County- 300 AM PST Wed Dec 30 2020 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 1 AM PST THURSDAY... * WHAT...Southwest winds 35 to 45 mph with gusts up to 65 mph expected. Gusts up to 75 mph are possible over higher terrain and other more exposed areas. * WHERE...Portions of Lake and eastern Lake Counties, including highway 31 between Valley Falls and Summer Lake, Highway 395 from Valley Falls to Alkali Lake, and the high terrain of Winter Rim and the Hart and Warner Mountains. * WHEN...Winds will increase Wednesday morning, peak in the afternoon, then diminish in the evening. * IMPACTS...Travel will be difficult, especially for high profile vehicles. Winds could damage trees and power lines. * ADDITIONAL DETAILS...Blowing snow may cause periods of reduced visibilities. * View the hazard area in detail at https://www.wrh.noaa.gov/mfr/HAZARD PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. Use caution if you must drive. && $$ CAZ081-302300- /O.CON.KMFR.WI.Y.0028.201230T2100Z-201231T0600Z/ Central Siskiyou County- Including the city of Weed 300 AM PST Wed Dec 30 2020 ...WIND ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 10 PM PST THIS EVENING... * WHAT...South winds 25 to 30 mph with gusts up to 50 mph expected. * WHERE...Southern and central portions of the Shasta Valley, including Weed, Gazelle, and Grenada, and portions of Interstate 5 and Highway 97. * WHEN...From 1 PM to 10 PM PST Wednesday. * IMPACTS...Gusty winds could blow around unsecured objects. Driving may become difficult, especially for high profile vehicles. 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/mfr/HAZARD PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ Visit us at https://www.weather.gov/Medford
166 WWUS76 KMFR 302242 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 242 PM PST Wed Dec 30 2020 CAZ085-ORZ030-031-310900- /O.CON.KMFR.HW.W.0009.000000T0000Z-201231T0900Z/ Modoc County- Northern and Eastern Klamath County and Western Lake County- Central and Eastern Lake County- 242 PM PST Wed Dec 30 2020 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 1 AM PST THURSDAY... * WHAT...Southwest winds 35 to 45 mph with gusts up to 65 mph expected. Gusts up to 75 mph are possible over higher terrain and other more exposed areas. * WHERE...Portions of Lake and eastern Lake Counties, including highway 31 between Valley Falls and Summer Lake, Highway 395 from Valley Falls to Alkali Lake, and the high terrain of Winter Rim and the Hart and Warner Mountains. * WHEN...Winds will peak this afternoon, then diminish through the evening. * IMPACTS...Travel will be difficult, especially for high profile vehicles. Winds could damage trees and power lines. * ADDITIONAL DETAILS...Blowing snow may cause periods of reduced visibilities. * View the hazard area in detail at https://www.wrh.noaa.gov/mfr/HAZARD PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. Use caution if you must drive. && $$ CAZ081-310600- /O.CON.KMFR.WI.Y.0028.000000T0000Z-201231T0600Z/ Central Siskiyou County- Including the city of Weed 242 PM PST Wed Dec 30 2020 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... * WHAT...South winds 25 to 30 mph with gusts up to 50 mph expected. * WHERE...Southern and central portions of the Shasta Valley, including Weed, Gazelle, and Grenada, and portions of Interstate 5 and Highway 97. * WHEN...Winds will peak this afternoon, then diminish through the evening. * IMPACTS...Gusty winds could blow around unsecured objects. Driving may become difficult, especially for high profile vehicles. 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/mfr/HAZARD PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ Visit us at https://www.weather.gov/Medford
394 WWUS76 KMFR 310548 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 948 PM PST Wed Dec 30 2020 CAZ081-310700- /O.EXP.KMFR.WI.Y.0028.000000T0000Z-201231T0600Z/ Central Siskiyou County- Including the city of Weed 948 PM PST Wed Dec 30 2020 ...WIND ADVISORY WILL EXPIRE AT 10 PM PST THIS EVENING... South winds in the southern portion of the Shasta Valley have recently diminished. Weed reported a peak gust late this afternoon of 53 mph. $$ CAZ085-ORZ030-031-310900- /O.CON.KMFR.HW.W.0009.000000T0000Z-201231T0900Z/ Modoc County- Northern and Eastern Klamath County and Western Lake County- Central and Eastern Lake County- 948 PM PST Wed Dec 30 2020 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 1 AM PST THURSDAY... * WHAT...Southwest winds have begun to diminish in western Lake County, but will continue at 25 to 40 mph with gusts up to 60 mph over the Hart and Warner Mountains of eastern Lake and eastern Modoc counties. * WHERE...Portions of Lake and eastern Modoc counties, including highway 31 between Valley Falls and Summer Lake, Highway 395 from Valley Falls to Alkali Lake, and the high terrain of Winter Rim and the Hart and Warner Mountains. * WHEN...Until 1 AM PST Thursday. * IMPACTS...Travel will be difficult, especially for high profile vehicles. Winds could damage trees and power lines. * ADDITIONAL DETAILS...Blowing snow may cause periods of reduced visibilities. * View the hazard area in detail at https://www.wrh.noaa.gov/mfr/HAZARD PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. Use caution if you must drive. && $$ Visit us at https://www.weather.gov/Medford
940 WWUS76 KMFR 310855 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 1255 AM PST Thu Dec 31 2020 CAZ085-ORZ030-031-311000- /O.EXP.KMFR.HW.W.0009.000000T0000Z-201231T0900Z/ Modoc County- Northern and Eastern Klamath County and Western Lake County- Central and Eastern Lake County- 1255 AM PST Thu Dec 31 2020 ...HIGH WIND WARNING WILL EXPIRE AT 1 AM PST EARLY THIS MORNING... Winds have diminished across the area. $$ Visit us at https://www.weather.gov/Medford
The office that day
Everything else NWS Medford, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 29, 1:09 PM PST | Wind Advisory | MFR | Siskiyou | 33 hr |
| Dec 29, 2:40 PM PST | High Surf Advisory | MFR | Coos, Curry, Douglas | 43 hr |
| Dec 29, 3:36 PM PST | Small Craft Advisory | MFR | 66 hr |
Nearby
High Wind Warnings in Oregon, 2020High Wind Warnings in California, 2020Every high wind warning in 2020
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.