Alert archive / California / Red Flag Warnings in 2021
Red Flag Warning 15, NWS Medford, OR
NWS Medford, OR issued this red flag warning at Jul 4, 2021, 1:35 PM PDT for Modoc County, Siskiyou County, California. It took effect at Jul 5, 2021, 2:00 PM PDT. It was in force for 6 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 4, 2021, 1:35 PM PDT (20:35 UTC)
- In effect from
- Jul 5, 2021, 2:00 PM PDT
- Expired
- Jul 5, 2021, 8:00 PM PDT
- In force
- 6 hr
- Issued by
- NWS Medford, OR
Counties Modoc County, CA, Siskiyou County, CA
The radar
The Medford radar (KMAX), 105 km from the middle of the area, began a volume at 20:39 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, 8.6 hours before the alert went out and 130 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
- 1755 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 92 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
714 WWUS86 KMFR 042035 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 135 PM PDT Sun Jul 4 2021 CAZ284-285-051215- /O.NEW.KMFR.FW.W.0015.210705T2100Z-210706T0300Z/ /O.NEW.KMFR.FW.A.0011.210706T2100Z-210707T0300Z/ Siskiyou County from the Cascade Mountains East and South to Mt Shasta-Modoc County Except for the Surprise Valley- 135 PM PDT Sun Jul 4 2021 ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 8 PM PDT MONDAY FOR GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284 AND 285... ...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284 AND 285... The National Weather Service in Medford has issued a Red Flag Warning...which is in effect from 2 PM to 8 PM PDT Monday. A Fire Weather Watch has also been issued. This Fire Weather Watch is in effect from Tuesday afternoon through Tuesday evening. * Impacts: Gusty wind with low relative humidity and high fire danger will likely contribute to a significant spread of new and existing fires. * Affected area: In Northern CA, portions of Fire Weather Zones 284 and 285, including portions of the Modoc National Forest and the Clear Lake Wildlife Refuge, and the communities of Tionesta, Canby, and Alturas. * Wind: Southwest 10 to 15 mph with gusts up to 30 mph. * Humidity: As low as 8 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. && $$ ORZ624-625-051215- /O.NEW.KMFR.FW.A.0011.210706T2100Z-210707T0300Z/ Klamath Basin and the Fremont-Winema National Forest- South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 135 PM PDT Sun Jul 4 2021 ...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 624 AND 625... The National Weather Service in Medford has issued a Fire Weather Watch...which is in effect from Tuesday afternoon through Tuesday evening. * Impacts: Gusty winds with low relative humidity and high fire danger could contribute to a significant spread of new and existing fires. * Affected area: In South Central OR, portions of Fire Weather Zones 624 and 625, including portions of the Fremont-Winema national Forest and the communities of Bonanza, Bly, Paisley, Valley Falls, and Lakeview. * Wind: Southwest 10 to 15 mph with gusts up to 30 mph. * Humidity: As low as 8 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD Precautionary/preparedness actions... If you have not packed your evacuation kit yet, now is the time to do so. This includes items like important documents and essentials you cannot live without. Fill your vehicle's fuel tank. Visit ready.gov/kit for more information. Plan now to avoid using equipment that could cause sparks during the period when critical weather conditions are possible. Visit weather.gov/medford/wildfire for links to fire restrictions in your area. A Fire Weather Watch means that critical fire weather conditions are possible during the valid watch time. These conditions could promote the rapid spread of wildfires which could become life- threatening. Check weather.gov/medford for forecast updates and a possible upgrade of the this watch to a Red Flag Warning. && $$ BPN Visit us at www.weather.gov/Medford
2 follow-up statements
536 WWUS86 KMFR 051051 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 351 AM PDT Mon Jul 5 2021 CAZ284-285-052300- /O.CON.KMFR.FW.W.0015.210705T2100Z-210706T0300Z/ /O.CON.KMFR.FW.A.0011.210706T2100Z-210707T0300Z/ Siskiyou County from the Cascade Mountains East and South to Mt Shasta-Modoc County Except for the Surprise Valley- 351 AM PDT Mon Jul 5 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284 AND 285... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284 AND 285... * Impacts: Gusty wind with low relative humidity and high fire danger will likely contribute to a significant spread of new and existing fires. * Affected area: In Northern CA, portions of Fire Weather Zones 284 and 285, including portions of the Modoc National Forest and the Clear Lake Wildlife Refuge, and the communities of Tionesta, Canby, and Alturas. * Wind: Southwest 10 to 20 mph with gusts up to 25 mph today then Southwest 15 to 25 mph with gusts up to 35 mph Tuesday. * Humidity: As low as 8 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ ORZ624-625-052300- /O.CON.KMFR.FW.A.0011.210706T2100Z-210707T0300Z/ Klamath Basin and the Fremont-Winema National Forest- South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 351 AM PDT Mon Jul 5 2021 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 624 AND 625... * Impacts: Strong, gusty wind with low relative humidity and high fire danger will likely contribute to a significant spread of new and existing fires. * Affected area: In South Central OR, portions of Fire Weather Zones 624 and 625, including portions of the Fremont-Winema national Forest and the communities of Bonanza, Bly, Paisley, Valley Falls, and Lakeview. * Wind: Southwest 10 to 20 mph with gusts up to 30 mph. * Humidity: As low as 8 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ DW Visit us at www.weather.gov/Medford
128 WWUS86 KMFR 052146 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 246 PM PDT Mon Jul 5 2021 CAZ284-285-061130- /O.UPG.KMFR.FW.A.0011.210706T2100Z-210707T0300Z/ /O.NEW.KMFR.FW.W.0016.210706T2100Z-210707T0300Z/ /O.CON.KMFR.FW.W.0015.000000T0000Z-210706T0300Z/ Siskiyou County from the Cascade Mountains East and South to Mt Shasta-Modoc County Except for the Surprise Valley- 246 PM PDT Mon Jul 5 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284 AND 285... ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 8 PM PDT TUESDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284 AND 285... The National Weather Service in Medford has issued a Red Flag Warning...which is in effect from 2 PM to 8 PM PDT Tuesday. The Fire Weather Watch has been upgraded. * Impacts: Strong, gusty wind with low relative humidity and high fire danger will likely contribute to a significant spread of new and existing fires. * Affected area: For Today, in Northern CA, portions of Fire Weather Zones 284 and 285, including portions of the Modoc National Forest and the Clear Lake Wildlife Refuge, and the communities of Tionesta, Canby, and Alturas. For Tuesday, in Northern CA, most of Fire Weather Zone 285 and Eastern 284, including portions of the Modoc and Klamath National Forests and the Clear Lake Wildlife Refuge, and the communities of Tulelake, Tionesta, Canby, and Alturas * Wind: Today, southwest 10 to 20 mph with gusts up to 25 mph. Tuesday, Southwest 15 to 25 mph with gusts up to 35 mph * Humidity: As low as 8 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. && $$ ORZ624-625-061130- /O.UPG.KMFR.FW.A.0011.210706T2100Z-210707T0300Z/ /O.NEW.KMFR.FW.W.0016.210706T2100Z-210707T0300Z/ Klamath Basin and the Fremont-Winema National Forest- South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 246 PM PDT Mon Jul 5 2021 ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 8 PM PDT TUESDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 624 AND 625... The National Weather Service in Medford has issued a Red Flag Warning...which is in effect from 2 PM to 8 PM PDT Tuesday. The Fire Weather Watch has been upgraded. * Impacts: Strong, gusty wind with low relative humidity and high fire danger will likely contribute to a significant spread of new and existing fires. * Affected area: In South Central OR...Southeast Fire Weather Zone 624 and extreme Western 625, including portions of the Fremont- Winema National Forest, and the communities of Lakeview, Valley Falls, Paisley, Bly, and Bonanza. * Wind: Southwest 10 to 15 mph with gusts up to 30 mph. * Humidity: As low as 9 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. In South Central OR...Fire Weather Zones 624 and 625. 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
The office that day
Everything else NWS Medford, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 1:35 PM PDT | Fire Weather Watch | MFR | Modoc, Siskiyou | 25 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.