Alert archive / Oregon / Wind Advisories in 2020
Wind Advisory 21, NWS Medford, OR
NWS Medford, OR issued this wind advisory at Nov 17, 2020, 7:31 PM PST for Klamath County, Lake County, Oregon; Modoc County, California. It took effect at Nov 18, 2020, 4:00 AM PST. It was in force for 24 hr.
The area
The counties it named.
The facts
- Issued
- Nov 17, 2020, 7:31 PM PST (03:31 UTC)
- In effect from
- Nov 18, 2020, 4:00 AM PST
- Expired
- Nov 19, 2020, 4:00 AM PST
- In force
- 24 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 03:31 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, 3.5 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
- 10 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 1012 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 176 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
565 WWUS76 KMFR 180331 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 731 PM PST Tue Nov 17 2020 CAZ085-ORZ030-031-181500- /O.NEW.KMFR.WI.Y.0021.201118T1200Z-201119T0600Z/ Modoc County- Northern and Eastern Klamath County and Western Lake County- Central and Eastern Lake County- 731 PM PST Tue Nov 17 2020 ...WIND ADVISORY IN EFFECT FROM 4 AM TO 10 PM PST WEDNESDAY... * WHAT...Southwest winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...The Warner Mountains in California and Oregon, including portions of Highway 140; Highway 239 and Cedar Pass; Highway 31 between Paisley and Summer Lake; US 395 from Lakeview to Wagontire, including Alkali Lake; Winter Rim; and other higher terrain east of the Cascades. * WHEN...From 4 AM to 10 PM PST Wednesday. The strongest winds will occur from 7 AM to 7 PM. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Travel could become difficult, especially as snow falls-- reducing visibility. * ADDITIONAL DETAILS...Up to 4 inches of snow may fall in some of these areas. This snowfall combined with winds could decrease visibility at times. * 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. && $$ Visit us at https://www.weather.gov/Medford
4 follow-up statements
728 WWUS76 KMFR 181217 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 417 AM PST Wed Nov 18 2020 CAZ085-ORZ030-031-182200- /O.CON.KMFR.WI.Y.0021.000000T0000Z-201119T0600Z/ Modoc County- Northern and Eastern Klamath County and Western Lake County- Central and Eastern Lake County- 417 AM PST Wed Nov 18 2020 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... * WHAT...Southwest winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...The Warner Mountains in California and Oregon, including portions of Highway 140; Highway 239 and Cedar Pass; Highway 31 between Paisley and Summer Lake; US 395 from Lakeview to Wagontire, including Alkali Lake; Winter Rim; and other higher terrain east of the Cascades. * WHEN...Until 10 PM PST this evening. The strongest winds are expected late this morning into the afternoon. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and power outages are possible. Travel could become difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...1 to 3 inches of snow is possible for some of these areas. This snowfall combined with gusty winds could result in reduced visibility at times. * View the hazard area in detail at https://www.wrh.noaa.gov/mfr/HAZARD PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ Visit us at https://www.weather.gov/Medford
280 WWUS76 KMFR 182156 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 156 PM PST Wed Nov 18 2020 CAZ085-ORZ030-031-190600- /O.CON.KMFR.WI.Y.0021.000000T0000Z-201119T0600Z/ Modoc County- Northern and Eastern Klamath County and Western Lake County- Central and Eastern Lake County- 156 PM PST Wed Nov 18 2020 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... * WHAT...Southwest winds 20 to 25 mph with gusts up to 45 mph expected. * WHERE...The Warner Mountains in California and Oregon, including portions of Highway 140; Highway 239 and Cedar Pass; Highway 31 between Paisley and Summer Lake; US 395 from Lakeview to Wagontire, including Alkali Lake; Winter Rim; and other higher terrain east of the Cascades. * WHEN...Until 10 PM PST this evening. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and power outages are possible. Travel could become difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Light snow is expected for some of these areas. This snowfall combined with gusty winds could result in reduced visibility at times. * 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. && $$ Visit us at https://www.weather.gov/Medford
655 WWUS76 KMFR 190548 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 948 PM PST Wed Nov 18 2020 CAZ085-ORZ030-031-191200- /O.EXT.KMFR.WI.Y.0021.000000T0000Z-201119T1200Z/ Modoc County- Northern and Eastern Klamath County and Western Lake County- Central and Eastern Lake County- 948 PM PST Wed Nov 18 2020 ...WIND ADVISORY NOW IN EFFECT UNTIL 4 AM PST THURSDAY... * WHAT...Southwest winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...In California, Modoc County. In Oregon, Western Lake County and Central and Eastern Lake County. * WHEN...Until 4 AM PST Thursday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and power outages are possible. Travel could become difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Snow showers are expected, mainly from about Cedar Pass in the Warner Mountains northward into Lake County. While snow amounts in these areas are expected to be under 3 inches, the snowfall combined with gusty winds will result in reduced visibility at times. Please drive with extra caution. * View the hazard area in detail at https://www.wrh.noaa.gov/mfr/HAZARD PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ BTL Visit us at https://www.weather.gov/Medford
769 WWUS76 KMFR 191139 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 339 AM PST Thu Nov 19 2020 ORZ030-191245- /O.CAN.KMFR.WI.Y.0021.000000T0000Z-201119T1200Z/ Northern and Eastern Klamath County and Western Lake County- 339 AM PST Thu Nov 19 2020 ...WIND ADVISORY IS CANCELLED... Winds will remain breezy to gusty through late this morning but will be below advisory criteria. $$ CAZ085-ORZ031-191245- /O.EXP.KMFR.WI.Y.0021.000000T0000Z-201119T1200Z/ Modoc County-Central and Eastern Lake County- 339 AM PST Thu Nov 19 2020 ...WIND ADVISORY WILL EXPIRE AT 4 AM PST EARLY THIS MORNING... Winds will remain breezy to gusty through late this morning but will be below advisory criteria. $$ 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 |
|---|---|---|---|---|
| Nov 18, 2:30 AM PST | Small Craft Advisory | MFR | 38 hr |
Nearby
Wind Advisories in Oregon, 2020Wind Advisories in California, 2020Every wind advisory 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.