Alert archive / Oregon / Red Flag Warnings in 2021
Red Flag Warning 42, NWS Medford, OR
NWS Medford, OR issued this red flag warning at Aug 16, 2021, 1:45 PM PDT for Harney County, Klamath County, Lake County, Oregon; Modoc County, Siskiyou County, California. It took effect at Aug 17, 2021, 2:00 PM PDT. It was in force for 8 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 16, 2021, 1:45 PM PDT (20:45 UTC)
- In effect from
- Aug 17, 2021, 2:00 PM PDT
- Expired
- Aug 17, 2021, 10:00 PM PDT
- In force
- 8 hr
- Issued by
- NWS Medford, OR
Counties Modoc County, CA, Siskiyou County, CA, Harney County, OR, Klamath County, OR, Lake County, OR
The radar
The Medford radar (KMAX), 156 km from the middle of the area, began a volume at 20:44 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, 8.8 hours before the alert went out and 160 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
- 1621 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
697 WWUS86 KMFR 162045 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 145 PM PDT Mon Aug 16 2021 CAZ285-170845- /O.UPG.KMFR.FW.A.0030.210817T2100Z-210818T0500Z/ /O.NEW.KMFR.FW.W.0042.210817T2100Z-210818T0500Z/ /O.CON.KMFR.FW.W.0041.210816T2100Z-210817T0500Z/ Modoc County Except for the Surprise Valley- 145 PM PDT Mon Aug 16 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 285... ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 10 PM PDT TUESDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 285... The National Weather Service in Medford has issued a Red Flag Warning...which is in effect from 2 PM to 10 PM PDT Tuesday. The Fire Weather Watch is no longer in effect. * Impacts: Strong, gusty wind with low relative humidity and critically dry vegetation will greatly increase the spread potential of any new and existing fires. * Affected area: In Northern CA...Fire Weather Zone 285. This includes the Modoc National Forest. * Wind: Northwest 15 to 25 mph with gusts up to 40 mph. * Humidity: As low as 10 percent. * 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. && $$ CAZ280-170845- /O.NEW.KMFR.FW.W.0042.210817T2100Z-210818T0500Z/ /O.NEW.KMFR.FW.A.0031.210818T2100Z-210819T0500Z/ Western Klamath National Forest- 145 PM PDT Mon Aug 16 2021 ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 10 PM PDT TUESDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 280... ...FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 280... The National Weather Service in Medford has issued a Red Flag Warning...which is in effect from 2 PM to 10 PM PDT Tuesday. A Fire Weather Watch has also been issued. This Fire Weather Watch is in effect from Wednesday afternoon through Wednesday evening. * Impacts: Strong, gusty wind with low relative humidity and critically dry vegetation will greatly increase the spread potential of any new and existing fires. * Affected area: In Northern CA...Fire Weather Zone 280. This includes the Klamath National Forest. * Wind: Northeast 5 to 15 mph with gusts up to 30 mph. * Humidity: As low as 13 percent. * 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. 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. Plan now to avoid using equipment that could cause sparks during the period when critical weather conditions are possible. Visit weather.gov/medford/wildfire for links to fire restrictions in your area. A Fire Weather Watch means that critical fire weather conditions are possible during the valid watch time. These conditions could promote the rapid spread of wildfires which could become life- threatening. Check weather.gov/medford for forecast updates and a possible upgrade of the this watch to a Red Flag Warning. && $$ CAZ284-ORZ624-625-170845- /O.UPG.KMFR.FW.A.0030.210817T2100Z-210818T0500Z/ /O.NEW.KMFR.FW.W.0042.210817T2100Z-210818T0500Z/ Siskiyou County from the Cascade Mountains East and South to Mt Shasta-Klamath Basin and the Fremont-Winema National Forest- South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 145 PM PDT Mon Aug 16 2021 ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 10 PM PDT TUESDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284...624 AND 625... The National Weather Service in Medford has issued a Red Flag Warning...which is in effect from 2 PM to 10 PM PDT Tuesday. The Fire Weather Watch is no longer in effect. * Impacts: Strong, gusty wind with low relative humidity and critically dry vegetation will greatly increase the spread potential of any new and existing fires. * Affected area: In Northern CA Fire Zone....284. This includes the Klamath National Forest. In South Central OR Fire Zones...624...625. This includes the Fremont-Winema National Forest. * Wind: Northwest 15 to 25 mph with gusts up to 40 mph. * Humidity: As low as 10 percent. * 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. && $$ Visit us at www.weather.gov/Medford
4 follow-up statements
548 WWUS86 KMFR 170446 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 946 PM PDT Mon Aug 16 2021 CAZ285-172200- /O.EXP.KMFR.FW.W.0041.000000T0000Z-210817T0500Z/ /O.CON.KMFR.FW.W.0042.210817T2100Z-210818T0500Z/ Modoc County Except for the Surprise Valley- 946 PM PDT Mon Aug 16 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM TO 10 PM PDT TUESDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 285... * Impacts: Strong, gusty wind with low relative humidity and critically dry vegetation will greatly increase the spread potential of any new and existing fires. * Affected area: In Northern CA...Fire Weather Zone 285. This includes the Modoc National Forest * Wind: Northwest 15 to 25 mph with gusts up to 40 mph. * Humidity: As low as 10 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD Precautionary/preparedness actions... Avoid tossing burning cigarettes on the ground, parking hot vehicles on dry vegetation, and using equipment that can cause sparks. Follow all fire restrictions. Find links to restrictions at weather.gov/medford/wildfire. One less spark, one less wildfire. Gather your fire evacuation kit now. Collect essentials you don't want to lose and prioritize your checklist. Visit ready.gov/kit for more information. Familiarize yourself with your evacuation plan. Where will you go? How will you get there? Who will you call to let others know your are safe? Visit ready.gov/wildfires for more information. A Red Flag Warning does not mean there is a fire. It means that critical fire weather conditions are either occurring now or will shortly. These conditions promote rapid spread of fire which may become life threatening. Evacuate if ordered to, or if a fire threatens. && $$ CAZ280-172200- /O.CON.KMFR.FW.W.0042.210817T2100Z-210818T0500Z/ /O.CON.KMFR.FW.A.0031.210818T2100Z-210819T0500Z/ Western Klamath National Forest- 946 PM PDT Mon Aug 16 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM TO 10 PM PDT TUESDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 280... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 280... * Impacts: Strong, gusty wind with low relative humidity and critically dry vegetation will greatly increase the spread potential of any new and existing fires. * Affected area: In Northern CA...Portions of Fire Weather Zone 280 in the horn of Western Siskiyou County. This includes the Klamath National Forest. * Wind: Northeast 5 to 15 mph with gusts up to 30 mph. * Humidity: As low as 13 percent. * 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. $$ CAZ284-ORZ624-625-172200- /O.CON.KMFR.FW.W.0042.210817T2100Z-210818T0500Z/ Siskiyou County from the Cascade Mountains East and South to Mt Shasta-Klamath Basin and the Fremont-Winema National Forest- South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 946 PM PDT Mon Aug 16 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM TO 10 PM PDT TUESDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284...624 AND 625... * Impacts: Strong, gusty wind with low relative humidity and critically dry vegetation will greatly increase the spread potential of any new and existing fires. * Affected areas: In Northern CA, Northeast portions of Fire Zone 284. This includes north and eastern portions of the Antelope Fire and the Klamath National Forest. In South Central OR, Most of Fire Zone 624 and Southern Fire Zone 625. This includes the Patton Meadow Fire and the Fremont-Winema National Forest. * Wind: Northwest 15 to 25 mph with gusts up to 40 mph. * Humidity: As low as 10 percent. * 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. $$ Visit us at www.weather.gov/Medford
650 WWUS86 KMFR 171253 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 553 AM PDT Tue Aug 17 2021 CAZ280-180500- /O.CAN.KMFR.FW.A.0031.210818T2100Z-210819T0500Z/ /O.CON.KMFR.FW.W.0042.210817T2100Z-210818T0500Z/ Western Klamath National Forest- 553 AM PDT Tue Aug 17 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 10 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 280... ...FIRE WEATHER WATCH IS CANCELLED FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 280... The National Weather Service in Medford has cancelled the Fire Weather Watch. * Impacts: Strong, gusty wind with low relative humidity and critically dry vegetation will greatly increase the spread potential of any new and existing fires. * Affected area: In Northern CA...Portions of Fire Weather Zone 280 south of the Marble Mountains. This includes the Salmon Mountains and the River Complex. * Wind: Northwest 10 to 20 mph with gusts 25 to 30 mph. * Humidity: 10-15 percent. * 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. 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. && $$ CAZ284-285-ORZ624-625-180500- /O.CON.KMFR.FW.W.0042.210817T2100Z-210818T0500Z/ Siskiyou County from the Cascade Mountains East and South to Mt Shasta-Modoc County Except for the Surprise Valley- Klamath Basin and the Fremont-Winema National Forest- South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 553 AM PDT Tue Aug 17 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 10 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284...624 AND 625... * Impacts: Strong, gusty wind with low relative humidity and critically dry vegetation will greatly increase the spread potential of any new and existing fires. * Affected areas: In Northern CA, Northeast portions of Fire Zone 284. This includes north and eastern portions of the Antelope Fire and the Klamath National Forest. In South Central OR, most of Fire Zone 624 and southern Fire Zone 625. This includes the Bootleg Fire area, the Patton Meadow Fire, and the Fremont- Winema National Forest. * Wind: Northwest 15 to 25 mph with gusts 30 to 40 mph. * Humidity: 10-15 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ BTL Visit us at www.weather.gov/Medford
919 WWUS86 KMFR 171523 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 823 AM PDT Tue Aug 17 2021 CAZ280-284-285-ORZ624-625-180500- /O.CON.KMFR.FW.W.0042.210817T2100Z-210818T0500Z/ Western Klamath National Forest- Siskiyou County from the Cascade Mountains East and South to Mt Shasta-Modoc County Except for the Surprise Valley- Klamath Basin and the Fremont-Winema National Forest- South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 823 AM PDT Tue Aug 17 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 10 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 280...284...285...624 AND 625... * Impacts: Strong, gusty wind with low relative humidity and critically dry vegetation will greatly increase the spread potential of any new and existing fires. * Affected area: In Northern CA...Southwest Fire Weather Zone 280 south of the Marble Mountains. This includes the Salmon Mountains and the River Complex... Northeast portions of Fire Zone 284. This includes north and eastern portions of the Antelope Fire and the Klamath National Forest. And all of Fire Zone 285 including the Modoc National Forest. In South Central OR...Most of Fire Zone 624 and southern Fire Zone 625. This includes the Bootleg Fire area, the Patton Meadow Fire, and the Fremont-Winema National Forest. * Wind: Northwest 15 to 25 mph with gusts up to 40 mph. * Humidity: 12 to 15 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ Visit us at www.weather.gov/Medford
774 WWUS86 KMFR 180450 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 950 PM PDT Tue Aug 17 2021 CAZ280-284-285-ORZ624-625-180600- /O.EXP.KMFR.FW.W.0042.000000T0000Z-210818T0500Z/ Western Klamath National Forest- Siskiyou County from the Cascade Mountains East and South to Mt Shasta-Modoc County Except for the Surprise Valley- Klamath Basin and the Fremont-Winema National Forest- South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 950 PM PDT Tue Aug 17 2021 ...RED FLAG WARNING WILL EXPIRE AT 10 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 280... 284...285...624 AND 625... Winds are still a bit gusty, but humidities have risen well above critical values. $$ Visit us at www.weather.gov/Medford
The office that day
Everything else NWS Medford, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 2:30 PM PDT | Gale Warning | MFR | 4 days | |
| Aug 16, 2:30 PM PDT | Small Craft Advisory | MFR | 8 days | |
| Aug 16, 2:30 PM PDT | Hazardous Seas Warning | MFR | 5 days | |
| Aug 16, 1:45 PM PDT | Fire Weather Watch | MFR | Siskiyou | 16 hr |
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.