Alert archive / California / Red Flag Warnings in 2021
Red Flag Warning 22, NWS Medford, OR
NWS Medford, OR issued this red flag warning at Jul 15, 2021, 2:30 PM PDT for Modoc County, California. It took effect at Jul 16, 2021, 3:00 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
- Jul 15, 2021, 2:30 PM PDT (21:30 UTC)
- In effect from
- Jul 16, 2021, 3:00 PM PDT
- Expired
- Jul 16, 2021, 8:00 PM PDT
- In force
- 5 hr
- Issued by
- NWS Medford, OR
County Modoc County, CA
The radar
The Medford radar (KMAX), 174 km from the middle of the area, began a volume at 21:30 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, 9.5 hours before the alert went out and 192 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
- 1401 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
372 WWUS86 KMFR 152130 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 230 PM PDT Thu Jul 15 2021 ...Dry and windy conditions will persist east of the Cascades through this weekend... .Very low afternoon humidities combined with gusty winds will create conditions approaching or meeting Red Flag Warning criteria over the next several days. The worst conditions are expected over the Modoc National Forest. CAZ285-161330- /O.UPG.KMFR.FW.A.0016.210716T2200Z-210717T0300Z/ /O.NEW.KMFR.FW.W.0022.210716T2200Z-210717T0300Z/ /O.NEW.KMFR.FW.A.0017.210717T2300Z-210718T0500Z/ /O.CON.KMFR.FW.W.0021.000000T0000Z-210716T0300Z/ Modoc County Except for the Surprise Valley- 230 PM PDT Thu Jul 15 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 285... ...RED FLAG WARNING IN EFFECT FROM 3 PM TO 8 PM PDT FRIDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 285... ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING 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 3 PM to 8 PM PDT Friday. A Fire Weather Watch has also been issued. This Fire Weather Watch is in effect from Saturday afternoon through Saturday 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 285. * Wind: Southwest 10 to 20 mph with gusts up to 30 mph. * Humidity: 6 to 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. 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. && $$ Visit us at www.weather.gov/Medford
3 follow-up statements
252 WWUS86 KMFR 160332 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 832 PM PDT Thu Jul 15 2021 ...Dry and windy conditions will persist east of the Cascades through this weekend... .Very low afternoon humidities combined with gusty winds will create conditions approaching or meeting Red Flag Warning criteria over the next several days. The worst conditions are expected over the Modoc National Forest. CAZ285-162300- /O.CON.KMFR.FW.W.0022.210716T2200Z-210717T0300Z/ /O.CON.KMFR.FW.A.0017.210717T2300Z-210718T0500Z/ Modoc County Except for the Surprise Valley- 832 PM PDT Thu Jul 15 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 3 PM TO 8 PM PDT FRIDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 285... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING 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...most of Fire Weather Zone 285. * Wind: Southwest 10 to 20 mph with gusts up to 30 mph. * Humidity: 6 to 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
301 WWUS86 KMFR 162014 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 114 PM PDT Fri Jul 16 2021 ...Dry and windy conditions will persist east of the Cascades through this weekend... .Very low afternoon humidities combined with gusty winds will create conditions approaching or meeting Red Flag Warning criteria through the weekend. CAZ285-170900- /O.UPG.KMFR.FW.A.0017.210717T2300Z-210718T0500Z/ /O.NEW.KMFR.FW.W.0023.210717T2100Z-210718T0300Z/ /O.NEW.KMFR.FW.A.0018.210718T2100Z-210719T0300Z/ /O.CON.KMFR.FW.W.0022.210716T2200Z-210717T0300Z/ Modoc County Except for the Surprise Valley- 114 PM PDT Fri Jul 16 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 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 8 PM PDT SATURDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 285... ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING 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 8 PM PDT Saturday. A Fire Weather Watch has also been issued and is in effect from Sunday afternoon through Sunday 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...Most of Fire Weather Zone 285. This includes the communities of Alturas, Canby, Adin, and Likely. * Winds: Southwest to west 15 to 20 mph with gusts up to 30 mph. The strongest winds are expected Sunday. * Humidity: 6 to 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. 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. 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. && $$ ORZ624-170900- /O.NEW.KMFR.FW.W.0023.210717T2100Z-210718T0300Z/ /O.NEW.KMFR.FW.A.0018.210718T2100Z-210719T0300Z/ Klamath Basin and the Fremont-Winema National Forest- 114 PM PDT Fri Jul 16 2021 ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 8 PM PDT SATURDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 624... ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 624... The National Weather Service in Medford has issued a Red Flag Warning...which is in effect from 2 PM to 8 PM PDT Saturday. A Fire Weather Watch has also been issued and is in effect from Sunday afternoon through Sunday 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 South Central OR...The southeastern portions of Fire Weather Zone 624, including the Bootleg Fire. This also includes the communities of Lakeview, Bly, and Valley Falls. * Wind: Southwest 15 to 20 mph with gusts up to 30 mph. The strongest winds are expected on Sunday. * Humidity: 8 to 12 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. 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. 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. && $$ CAZ284-170900- /O.NEW.KMFR.FW.A.0018.210718T2100Z-210719T0300Z/ Siskiyou County from the Cascade Mountains East and South to Mt Shasta- 114 PM PDT Fri Jul 16 2021 ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 284... The National Weather Service in Medford has issued a Fire Weather Watch...which is in effect from Sunday afternoon through Sunday 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...Most of Fire Weather Zone 284, including the Lava and Tennant Fires. This also includes the communities of Macdoel, Tennant and Tulelake. * Wind: Southwest 10 to 15 mph with gusts up to 30 mph. * Humidity: 8 to 10 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. 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. && $$ CAZ281-282-170900- /O.NEW.KMFR.FW.A.0018.210718T2100Z-210719T0300Z/ Central Siskiyou County Including Shasta Valley-Shasta- Trinity National Forest in Siskiyou County- 114 PM PDT Fri Jul 16 2021 ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 281 AND 282... The National Weather Service in Medford has issued a Fire Weather Watch...which is in effect from Sunday afternoon through Sunday evening. * Impacts: Strong, gusty wind with low relative humidity and critically dry vegetation will greatly increase the spread potential of any new and existing fires. * Affected area: In Northern CA...Fire Weather Zones 281 and 282. This includes the Shasta Valley from Yreka southward, including the communities of Weed, Mt Shasta City, Dunsmuir, and McCloud. * Wind: South 10 to 20 mph with gusts to 30 mph. * Humidity: 8 to 12 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD Precautionary/preparedness actions... If you have not packed your evacuation kit yet, now is the time to do so. This includes items like important documents and essentials you cannot live without. Fill your vehicle's fuel tank. Visit ready.gov/kit for more information. Plan now to avoid using equipment that could cause sparks during the period when critical weather conditions are possible. Visit weather.gov/medford/wildfire for links to fire restrictions in your area. A Fire Weather Watch means that critical fire weather conditions are possible during the valid watch time. These conditions could promote the rapid spread of wildfires which could become life- threatening. Check weather.gov/medford for forecast updates and a possible upgrade of the this watch to a Red Flag Warning. && $$ Visit us at www.weather.gov/Medford
687 WWUS86 KMFR 170306 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 806 PM PDT Fri Jul 16 2021 ...Dry and windy conditions will persist east of the Cascades through this weekend... .Very low afternoon humidities combined with gusty winds will create conditions approaching or meeting Red Flag Warning criteria through the weekend. CAZ285-172300- /O.EXP.KMFR.FW.W.0022.000000T0000Z-210717T0300Z/ /O.CON.KMFR.FW.W.0023.210717T2100Z-210718T0300Z/ /O.CON.KMFR.FW.A.0018.210718T2100Z-210719T0300Z/ Modoc County Except for the Surprise Valley- 806 PM PDT Fri Jul 16 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM TO 8 PM PDT SATURDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 285... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 285... ...RED FLAG WARNING HAS EXPIRED 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. * Winds: Southwest to west 15 to 20 mph with gusts up to 30 mph. The strongest winds are expected Sunday. * Humidity: 6 to 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. 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. && $$ ORZ624-172300- /O.CON.KMFR.FW.W.0023.210717T2100Z-210718T0300Z/ /O.CON.KMFR.FW.A.0018.210718T2100Z-210719T0300Z/ Klamath Basin and the Fremont-Winema National Forest- 806 PM PDT Fri Jul 16 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM TO 8 PM PDT SATURDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 624... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 624... * Impacts: Strong, gusty wind with low relative humidity and critically dry vegetation will greatly increase the spread potential of any new and existing fires. * Affected area: In South Central OR...Fire Weather Zone 624. * Wind: Southwest 15 to 20 mph with gusts up to 30 mph. The strongest winds are expected on Sunday. * Humidity: 8 to 12 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ CAZ284-172300- /O.CON.KMFR.FW.A.0018.210718T2100Z-210719T0300Z/ Siskiyou County from the Cascade Mountains East and South to Mt Shasta- 806 PM PDT Fri Jul 16 2021 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 284... * 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 284. * Wind: Southwest 10 to 15 mph with gusts up to 30 mph. * Humidity: 8 to 10 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ CAZ281-282-172300- /O.CON.KMFR.FW.A.0018.210718T2100Z-210719T0300Z/ Central Siskiyou County Including Shasta Valley-Shasta- Trinity National Forest in Siskiyou County- 806 PM PDT Fri Jul 16 2021 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 281 AND 282... * Impacts: Strong, gusty wind with low relative humidity and critically dry vegetation will greatly increase the spread potential of any new and existing fires. * Affected area: In Northern CA...Fire Weather Zones 281 and 282. * Wind: South 10 to 20 mph with gusts to 30 mph. * Humidity: 8 to 12 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ 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 |
|---|---|---|---|---|
| Jul 15, 2:22 AM PDT | Fire Weather Watch | MFR | Modoc | 12 hr |
| Jul 15, 2:22 AM PDT | Red Flag Warning | MFR | Modoc | 18 hr |
| Jul 15, 2:30 PM PDT | Fire Weather Watch | MFR | Modoc | 23 hr |
Nearby
Red 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.