Alert archive / Oregon / Red Flag Warnings in 2021
Red Flag Warning 47, NWS Medford, OR
NWS Medford, OR issued this red flag warning at Sep 6, 2021, 2:00 PM PDT for Klamath County, Lake County, Oregon; Modoc County, Siskiyou County, California. It took effect at Sep 7, 2021, 1:00 PM PDT. It was in force for 7 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
- Sep 6, 2021, 2:00 PM PDT (21:00 UTC)
- In effect from
- Sep 7, 2021, 1:00 PM PDT
- Expired
- Sep 7, 2021, 8:00 PM PDT
- In force
- 7 hr
- Issued by
- NWS Medford, OR
Counties Modoc County, CA, Siskiyou County, CA, Klamath County, OR, Lake County, OR
The radar
The Medford radar (KMAX), 115 km from the middle of the area, began a volume at 21:04 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, 9.0 hours before the alert went out and 123 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
- 1896 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
300 WWUS86 KMFR 062100 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 200 PM PDT Mon Sep 6 2021 CAZ285-ORZ624-071100- /O.UPG.KMFR.FW.A.0034.210907T2000Z-210908T0300Z/ /O.NEW.KMFR.FW.W.0047.210907T2000Z-210908T0300Z/ Modoc County Except for the Surprise Valley- Klamath Basin and the Fremont-Winema National Forest- 200 PM PDT Mon Sep 6 2021 ...RED FLAG WARNING IN EFFECT FROM 1 PM TO 8 PM PDT TUESDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 285 AND 624... The National Weather Service in Medford has issued a Red Flag Warning...which is in effect from 1 PM to 8 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 The Fire Weather Watch is no longer in effect.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, much of Fire Weather Zone 285, including the Warner Mountains, the Modoc National Forest and the communities of Alturas, Canby, Adin, Tionesta, Newell and Davis Creek. In South Central OR, eastern and southeastern Fire Zone 624, including the Warner Mountains, Winter Rim, portions of the Fremont Winema National Forest, and the communities of Lakeview, Valley Falls and Bonanza, and Merrill. * Wind: Southwest 15 to 20 mph with gusts of 25 to 35 mph. * Humidity: 5 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. && $$ CAZ284-071100- /O.NEW.KMFR.FW.W.0047.210907T2000Z-210908T0300Z/ Siskiyou County from the Cascade Mountains East and South to Mt Shasta- 200 PM PDT Mon Sep 6 2021 ...RED FLAG WARNING IN EFFECT FROM 1 PM TO 8 PM PDT TUESDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 284... The National Weather Service in Medford has issued a Red Flag Warning...which is in effect from 1 PM to 8 PM PDT Tuesday. * Impacts: Strong, gusty wind with low relative humidity and critically dry vegetation will greatly increase the spread potential of any new and existing fires. * Affected area: In Northern CA, eastern Fire Weather Zone 284 in northeast Siskiyou County. This includes western portions of the Modoc National Forest, far eastern portions of the Klamath National Forest, far northeastern portions of Shasta National Forest, Lava Beds National Monument and the communities of Tulelake and Tennant. * Wind: Southwest 15 to 20 mph with gusts up to 30 mph. * Humidity: 5 to 10 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD Precautionary/preparedness actions... Avoid tossing burning cigarettes on the ground, parking hot vehicles on dry vegetation, and using equipment that can cause sparks. Follow all fire restrictions. Find links to restrictions at weather.gov/medford/wildfire. One less spark, one less wildfire. Gather your fire evacuation kit now. Collect essentials you don't want to lose and prioritize your checklist. Visit ready.gov/kit for more information. Familiarize yourself with your evacuation plan. Where will you go? How will you get there? Who will you call to let others know your are safe? Visit ready.gov/wildfires for more information. A Red Flag Warning does not mean there is a fire. It means that critical fire weather conditions are either occurring now or will shortly. These conditions promote rapid spread of fire which may become life threatening. Evacuate if ordered to, or if a fire threatens. && $$ Visit us at www.weather.gov/Medford
2 follow-up statements
255 WWUS86 KMFR 071031 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 331 AM PDT Tue Sep 7 2021 CAZ284-285-ORZ624-080300- /O.CON.KMFR.FW.W.0047.210907T2000Z-210908T0300Z/ 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- 331 AM PDT Tue Sep 7 2021 ...RED FLAG WARNING IN EFFECT FROM 1 PM TO 8 PM PDT TUESDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 285 AND 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 Northern CA, much of Fire Weather Zone 285, including the Warner Mountains, the Modoc National Forest and the communities of Alturas, Canby, Adin, Tionesta, Newell and Davis Creek. Also eastern Fire Weather Zone 284 in northeast Siskiyou County. This includes western portions of the Modoc National Forest, far eastern portions of the Klamath National Forest, far northeastern portions of Shasta National Forest, Lava Beds National Monument and the communities of Tulelake and Tennant. In South Central OR, eastern and southeastern Fire Zone 624, including the Warner Mountains, Winter Rim, portions of the Fremont Winema National Forest, and the communities of Lakeview, Valley Falls and Bonanza, and Merrill. * Wind: Southwest 15 to 20 mph with gusts of 25 to 35 mph. * Humidity: 5 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. $$
187 WWUS86 KMFR 080309 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 809 PM PDT Tue Sep 7 2021 CAZ284-285-ORZ624-080415- /O.EXP.KMFR.FW.W.0047.000000T0000Z-210908T0300Z/ Siskiyou County from the Cascade Mountains East and South to Mt Shasta-Modoc County Except for the Surprise Valley- Klamath Basin and the Fremont-Winema National Forest- 809 PM PDT Tue Sep 7 2021 ...RED FLAG WARNING HAS EXPIRED FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284...285 AND 624... Winds have diminished. Westerly winds will be gusty again Wednesday afternoon and evening, though with slightly higher humidity than today. $$ 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.