Alert archive / Oregon / Red Flag Warnings in 2021
Red Flag Warning 40, NWS Medford, OR
NWS Medford, OR issued this red flag warning at Aug 12, 2021, 1:44 PM PDT for Modoc County, Siskiyou County, California; 8 counties in Oregon. It took effect at Aug 13, 2021, 2:00 PM PDT. It was in force for 5 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
- Aug 12, 2021, 1:44 PM PDT (20:44 UTC)
- In effect from
- Aug 13, 2021, 2:00 PM PDT
- Expired
- Aug 13, 2021, 7:06 PM PDT
- In force
- 5 hr
- Issued by
- NWS Medford, OR
Counties Modoc County, CA, Siskiyou County, CA, Curry County, OR, Douglas County, OR, Harney County, OR, Jackson County, OR, Josephine County, OR, Klamath County, OR, Lake County, OR, Lane County, OR
The radar
The Medford radar (KMAX), 80 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
Medford/Jackson, OR (KMFR), launched 12:00Z, 8.7 hours before the alert went out and 65 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
- 2748 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- -41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
006 WWUS86 KMFR 122044 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 144 PM PDT Thu Aug 12 2021 ORZ617-130600- /O.UPG.KMFR.FW.A.0029.210813T2100Z-210814T0600Z/ /O.NEW.KMFR.FW.W.0040.210813T2100Z-210814T0600Z/ /O.CON.KMFR.FW.W.0039.210812T2100Z-210813T0600Z/ Umpqua National Forest- 144 PM PDT Thu Aug 12 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING FOR HAINES 6 WITH EXISTING FIRE FOR FIRE WEATHER ZONE 617... ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 11 PM PDT FRIDAY FOR ABUNDANT LIGHTNING ON DRY FUELS FOR FIRE WEATHER ZONE 617... The National Weather Service in Medford has issued a Red Flag Warning...which is in effect from 2 PM to 11 PM PDT Friday. The Fire Weather Watch is no longer in effect. * Impacts: Lightning and high fire danger will likely result in new fire starts. Gusty thunderstorm winds could contribute to fire spread. Despite rainfall, initial attack resources could be overwhelmed and holdover fires are possible. For the Haines 6 conditions, very dry and unstable conditions will support extreme fire behavior. Plume domination is possible with locally generated erratic and gusty winds. Spotting could be problematic. * Haines 6 Affected areas: The Jack Fire and Devils Knob Complex in fire weather zone 617. * Abundant Lightning Affected area: In Southwest OR...Fire Weather Zone 617. * Wind: Northwest 5 to 10 mph, except for gusty and erratic winds near thunderstorms reaching up to 40 mph. * Weather: Humidity As low as 12 percent with a Haines 6. Gusty and erratic winds are possible near smoke plumes. * Thunderstorms: Mainly isolated thunderstorms are expected, but scattered coverage is possible across the eastern portion of the zone. Gusty and erratic winds are possible near thunderstorms. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD Precautionary/preparedness actions... Avoid tossing burning cigarettes on the ground, parking hot vehicles on dry vegetation, and using equipment that can cause sparks. Follow all fire restrictions. Find links to restrictions at weather.gov/medford/wildfire. One less spark, one less wildfire. Gather your fire evacuation kit now. Collect essentials you don't want to lose and prioritize your checklist. Visit ready.gov/kit for more information. Familiarize yourself with your evacuation plan. Where will you go? How will you get there? Who will you call to let others know your are safe? Visit ready.gov/wildfires for more information. A Red Flag Warning does not mean there is a fire. It means that critical fire weather conditions are either occurring now or will shortly. These conditions promote rapid spread of fire which may become life threatening. Evacuate if ordered to, or if a fire threatens. && $$ CAZ280-281-284-285-ORZ621-623>625-130600- /O.UPG.KMFR.FW.A.0029.210813T2100Z-210814T0600Z/ /O.NEW.KMFR.FW.W.0040.210813T2100Z-210814T0600Z/ Western Klamath National Forest- Central Siskiyou County Including Shasta Valley- Siskiyou County from the Cascade Mountains East and South to Mt Shasta-Modoc County Except for the Surprise Valley- Siskiyou Mountains-Southern Oregon Cascades- Klamath Basin and the Fremont-Winema National Forest- South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 144 PM PDT Thu Aug 12 2021 ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 11 PM PDT FRIDAY FOR ABUNDANT LIGHTNING ON DRY FUELS FOR FIRE WEATHER ZONES 280...281...284...285...621...623...624 AND 625... The National Weather Service in Medford has issued a Red Flag Warning...which is in effect from 2 PM to 11 PM PDT Friday. The Fire Weather Watch is no longer in effect. * Impacts: Lightning and high fire danger will likely result in new fire starts. Gusty thunderstorm winds could contribute to fire spread. Despite rainfall, initial attack resources could be overwhelmed and holdover fires are possible. * Affected area: In Northern CA Fire Zones...280...281...284...285. In South Central OR Fire Zones...624...625. In Southwest OR Fire Zones...621...623. * Wind: Northwest 5 to 10 mph, except for gusty and erratic winds near thunderstorms reaching up to 40 mph. * Thunderstorms: Mainly isolated thunderstorms are expected, but some scattered coverage is possible, especially Friday afternoon into Friday evening. Gusty and erratic winds are possible near thunderstorms. * Humidity: As low as 14 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD Precautionary/preparedness actions... If you have not packed your evacuation kit yet, now is the time to do so. This includes items like important documents and essentials you cannot live without. Fill your vehicle's fuel tank. Visit ready.gov/kit for more information. A Red Flag Warning does not mean there is a fire. It means that critical fire weather conditions are either occurring now or will shortly. These conditions promote rapid spread of fire which may become life threatening. Evacuate if ordered to, or if a fire threatens. && $$ ORZ620-622-130600- /O.NEW.KMFR.FW.W.0040.210813T2100Z-210814T0600Z/ Western Rogue Basin including the Illinois Valley- Eastern Rogue Valley- 144 PM PDT Thu Aug 12 2021 ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 11 PM PDT FRIDAY FOR ABUNDANT LIGHTNING ON DRY FUELS FOR FIRE WEATHER ZONES 620 AND 622... The National Weather Service in Medford has issued a Red Flag Warning...which is in effect from 2 PM to 11 PM PDT Friday. * Impacts: Lightning and high fire danger will likely result in new fire starts. Gusty thunderstorm winds could contribute to fire spread. Despite rainfall, initial attack resources could be overwhelmed and holdover fires are possible. * Affected area: In Southwest OR...Fire Weather Zones 622 and eastern through southeast Fire Weather Zone 620, including the cities of Medford, Ashland, Grants Pass, Cave Junction, Selma, and Murphy. * Wind: Northwest 5 to 10 mph, except for gusty and erratic winds near thunderstorms reaching up to 40 mph. * Thunderstorms: Mainly isolated thunderstorms are expected, but some scattered coverage is possible, especially Friday afternoon into Friday evening. Gusty and erratic winds are possible near thunderstorms. * Humidity: As low as 18 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD Precautionary/preparedness actions... If you have not packed your evacuation kit yet, now is the time to do so. This includes items like important documents and essentials you cannot live without. Fill your vehicle's fuel tank. Visit ready.gov/kit for more information. A Red Flag Warning does not mean there is a fire. It means that critical fire weather conditions are either occurring now or will shortly. These conditions promote rapid spread of fire which may become life threatening. Evacuate if ordered to, or if a fire threatens. && $$ ORZ616-130600- /O.CON.KMFR.FW.W.0039.210812T2100Z-210813T0600Z/ Umpqua Basin- 144 PM PDT Thu Aug 12 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING FOR HAINES 6 WITH EXISTING FIRE FOR FIRE WEATHER ZONE 616... * Impacts: For the Haines 6 conditions, very dry and unstable conditions will support extreme fire behavior. Plume domination is possible with locally generated erratic and gusty winds. Spotting could be problematic. * Affected areas: Skyline Complex spread across fire weather zone 616. * Weather: Humidity As low as 15 percent with a Haines 6. Gusty and erratic winds are possible near smoke plumes. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ Visit us at www.weather.gov/Medford
3 follow-up statements
483 WWUS86 KMFR 130438 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 938 PM PDT Thu Aug 12 2021 ORZ617-132345- /O.CAN.KMFR.FW.W.0039.000000T0000Z-210813T0600Z/ /O.CON.KMFR.FW.W.0040.210813T2100Z-210814T0600Z/ Umpqua National Forest- 938 PM PDT Thu Aug 12 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM TO 11 PM PDT FRIDAY FOR ABUNDANT LIGHTNING ON DRY FUELS FOR FIRE WEATHER ZONE 617... ...RED FLAG WARNING HAS EXPIRED FOR HAINES 6 WITH EXISTING FIRE FOR FIRE WEATHER ZONE 617... * Impacts: Lightning and high fire danger will likely result in new fire starts. Gusty thunderstorm winds could contribute to fire spread. Despite rainfall, initial attack resources could be overwhelmed and holdover fires are possible. * Abundant Lightning Affected area: In Southwest OR...Fire Weather Zone 617. * Wind: North 5 to 10 mph, except for gusty and erratic winds near thunderstorms reaching up to 40 mph. * Weather: Humidity As low as 12 percent. * Thunderstorms: Mainly isolated thunderstorms are expected, but scattered coverage is possible across the eastern portion of the zone. Gusty and erratic winds are possible near thunderstorms. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD Precautionary/preparedness actions... Avoid tossing burning cigarettes on the ground, parking hot vehicles on dry vegetation, and using equipment that can cause sparks. Follow all fire restrictions. Find links to restrictions at weather.gov/medford/wildfire. One less spark, one less wildfire. Gather your fire evacuation kit now. Collect essentials you don't want to lose and prioritize your checklist. Visit ready.gov/kit for more information. Familiarize yourself with your evacuation plan. Where will you go? How will you get there? Who will you call to let others know your are safe? Visit ready.gov/wildfires for more information. A Red Flag Warning does not mean there is a fire. It means that critical fire weather conditions are either occurring now or will shortly. These conditions promote rapid spread of fire which may become life threatening. Evacuate if ordered to, or if a fire threatens. && $$ ORZ616-130545- /O.CAN.KMFR.FW.W.0039.000000T0000Z-210813T0600Z/ Umpqua Basin- 938 PM PDT Thu Aug 12 2021 ...RED FLAG WARNING HAS EXPIRED FOR HAINES 6 WITH EXISTING FIRE FOR FIRE WEATHER ZONE 616... The most unstable part of the day has ended and the greatest chance for a plume dominated fire has ended for today. $$ CAZ280-281-284-285-ORZ620>625-132345- /O.CON.KMFR.FW.W.0040.210813T2100Z-210814T0600Z/ Western Klamath National Forest- Central Siskiyou County Including Shasta Valley- Siskiyou County from the Cascade Mountains East and South to Mt Shasta-Modoc County Except for the Surprise Valley- Western Rogue Basin including the Illinois Valley- Siskiyou Mountains-Eastern Rogue Valley-Southern Oregon Cascades- Klamath Basin and the Fremont-Winema National Forest- South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 938 PM PDT Thu Aug 12 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM TO 11 PM PDT FRIDAY FOR ABUNDANT LIGHTNING ON DRY FUELS FOR FIRE WEATHER ZONES 280...281...284...285...620...621...622...623...624 AND 625... * Impacts: Lightning and high fire danger will likely result in new fire starts. Gusty thunderstorm winds could contribute to fire spread. Despite rainfall, initial attack resources could be overwhelmed and holdover fires are possible. * Affected area: In Northern CA Fire Zones...280...281...284...285. In South Central OR Fire Zones...624...625. In Southwest OR Fire Zones...621...622..623...and southeast Fire Weather Zone 620 * Wind: Northwest 5 to 10 mph, except for gusty and erratic winds near thunderstorms reaching up to 40 mph. * Thunderstorms: Mainly isolated thunderstorms are expected, but some scattered coverage is possible, especially Friday afternoon into Friday evening. Gusty and erratic winds are possible near thunderstorms. * Humidity: As low as 13 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ Visit us at www.weather.gov/Medford
779 WWUS86 KMFR 132055 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 155 PM PDT Fri Aug 13 2021 CAZ280-281-284-285-ORZ617-620>625-140600- /O.CON.KMFR.FW.W.0040.210813T2100Z-210814T0600Z/ Western Klamath National Forest- Central Siskiyou County Including Shasta Valley- Siskiyou County from the Cascade Mountains East and South to Mt Shasta-Modoc County Except for the Surprise Valley- Umpqua National Forest- Western Rogue Basin including the Illinois Valley- Siskiyou Mountains-Eastern Rogue Valley-Southern Oregon Cascades- Klamath Basin and the Fremont-Winema National Forest- South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 155 PM PDT Fri Aug 13 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING FOR ABUNDANT LIGHTNING ON DRY FUELS FOR FIRE WEATHER ZONES 280... 281...284...285...620...621...622...623...624 AND 625... * Impacts: Lightning and high fire danger will likely result in new fire starts. Gusty thunderstorm winds could contribute to fire spread. Despite rainfall, initial attack resources could be overwhelmed and holdover fires are possible. * Affected area: In Northern CA Fire Zones...280...281...284...285. In South Central OR Fire Zones...624...625. In Southwest OR Fire Zones...621...622..623...and southeast Fire Weather Zone 620 * Wind: Northwest 5 to 10 mph, except for gusty and erratic winds near thunderstorms reaching up to 40 mph. * Thunderstorms: Mainly isolated thunderstorms are expected, but some scattered coverage is possible, especially Friday afternoon into Friday evening. Gusty and erratic winds are possible near thunderstorms. * Humidity: As low as 13 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ Visit us at www.weather.gov/Medford
078 WWUS86 KMFR 140206 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 706 PM PDT Fri Aug 13 2021 CAZ280-281-284-285-ORZ617-620>625-140315- /O.CAN.KMFR.FW.W.0040.000000T0000Z-210814T0600Z/ Western Klamath National Forest- Central Siskiyou County Including Shasta Valley- Siskiyou County from the Cascade Mountains East and South to Mt Shasta-Modoc County Except for the Surprise Valley- Umpqua National Forest- Western Rogue Basin including the Illinois Valley- Siskiyou Mountains-Eastern Rogue Valley-Southern Oregon Cascades- Klamath Basin and the Fremont-Winema National Forest- South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 706 PM PDT Fri Aug 13 2021 ...RED FLAG WARNING IS CANCELLED FOR ABUNDANT LIGHTNING ON DRY FUELS FOR FIRE WEATHER ZONES 280...281...284...285...617...620... 621...622...623...624 AND 625... The National Weather Service in Medford has cancelled the Red Flag Warning. Smoke chocked out storm chances west of the Cascades and only lighter showers remain east of the Cascades. The thunderstorm threat is done for today. $$ Visit us at www.weather.gov/Medford
Nearby
Red Flag Warnings in Oregon, 2021Red Flag Warnings in California, 2021Every red flag warning 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.