Alert archive / Oregon / Red Flag Warnings in 2021
Red Flag Warning 34, NWS Medford, OR
NWS Medford, OR issued this red flag warning at Aug 1, 2021, 2:42 PM PDT for Harney County, Lake County, Oregon. It took effect at Aug 2, 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
- Aug 1, 2021, 2:42 PM PDT (21:42 UTC)
- In effect from
- Aug 2, 2021, 2:00 PM PDT
- Expired
- Aug 2, 2021, 8:00 PM PDT
- In force
- 6 hr
- Issued by
- NWS Medford, OR
Counties Harney County, OR, Lake County, OR
The nearest sounding before it
Medford/Jackson, OR (KMFR), launched 12:00Z, 9.7 hours before the alert went out and 263 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
- 46 J/kg
- Mixed-layer CIN
- -456 J/kg
- Mixed-layer LCL
- 1945 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- -10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
341 WWUS86 KMFR 012142 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 242 PM PDT Sun Aug 1 2021 ...Isolated to scattered thunderstorms expected this afternoon and evening across FWZs 620, 622, 623, and northwestern 624... ...Scattered thunderstorms expected in FWZ 625 Monday afternoon and evening... .Southerly flow will continue to bring moisture into the area. The heat and moisture will combine with a couple of low pressure impulses moving through aloft to support isolated to scattered thunderstorms this afternoon and evening and again, further northeastward, Monday afternoon and evening. With critically dry fuels in these areas, numerous fire starts are likely. ORZ625-021400- /O.NEW.KMFR.FW.W.0034.210802T2100Z-210803T0300Z/ South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 242 PM PDT Sun Aug 1 2021 ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 8 PM PDT MONDAY FOR ABUNDANT LIGHTNING ON DRY FUELS FOR FIRE WEATHER ZONE 625... The National Weather Service in Medford has issued a Red Flag Warning...which is in effect from 2 PM to 8 PM PDT Monday. * Impacts: Lightning on dry fuels is likely to result in new fire starts. Gusty thunderstorm winds could contribute to fire spread. Despite localized wetting rainfall in storm cores, initial attack resources could be overwhelmed and holdover fires are likely. * Affected area: In South Central OR...Fire Weather Zone 625. * Wind: Southerly 5-10 mph, except gusty and erratic wind gusts 30 to 40 mph in stronger thunderstorms. * Thunderstorms: Thunderstorms are expected to begin to develop near Silver Lake and Summer Lake early in the afternoon and then expand in area and coverage across FWZ 625 through the afternoon and into the evening. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD Precautionary/preparedness actions... 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. && $$ ORZ620-622>624-020500- /O.CON.KMFR.FW.W.0033.000000T0000Z-210802T0500Z/ Western Rogue Basin including the Illinois Valley- Eastern Rogue Valley-Southern Oregon Cascades- Klamath Basin and the Fremont-Winema National Forest- 242 PM PDT Sun Aug 1 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING FOR ABUNDANT LIGHTNING ON DRY FUELS FOR FIRE WEATHER ZONES 620, 622, 623 AND PORTIONS OF 624... * Impacts: Lightning on dry fuels is likely to result in new fire starts. Gusty thunderstorm winds could contribute to fire spread. Despite localized wetting rainfall in storm cores, initial attack resources could be overwhelmed and holdover fires are likely. * Affected areas for the Red Flag Warning: In Southwestern Oregon, Fire Weather Zones 620 and 622 including the Illinois Valley including Cave Junction and Grants Pass, and the Applegate Valley northward to Phoenix, Medford to Prospect. In South Central Oregon, portions of Fire Weather Zones 623 and 624. This includes Crater Lake, Howard Prairie, Klamath Falls, Chemult, and Chiloquin. This does NOT include the Bootleg fire. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ BTL Visit us at www.weather.gov/Medford
4 follow-up statements
725 WWUS86 KMFR 020455 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 955 PM PDT Sun Aug 1 2021 ...Scattered thunderstorms expected in FWZ 625 Monday afternoon and evening... .Southerly flow will continue to bring moisture into the area. The heat and moisture will combine with upper level disturbances to support isolated to scattered thunderstorms Monday afternoon and evening. With critically dry fuels in these areas, numerous fire starts are likely. ORZ620-622>624-020600- /O.EXP.KMFR.FW.W.0033.000000T0000Z-210802T0500Z/ Western Rogue Basin including the Illinois Valley- Eastern Rogue Valley-Southern Oregon Cascades- Klamath Basin and the Fremont-Winema National Forest- 955 PM PDT Sun Aug 1 2021 ...RED FLAG WARNING WILL EXPIRE AT 10 PM PDT THIS EVENING FOR ABUNDANT LIGHTNING ON DRY FUELS FOR FIRE WEATHER ZONES 620, 622, 623 AND PORTIONS OF 624... Thunderstorms have diminished over the area. $$ ORZ625-022200- /O.CON.KMFR.FW.W.0034.210802T2100Z-210803T0300Z/ South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 955 PM PDT Sun Aug 1 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM TO 8 PM PDT MONDAY FOR ABUNDANT LIGHTNING ON DRY FUELS... * Impacts: Lightning and high fire danger will likely result in new fire starts. Gusty thunderstorm winds could contribute to firespread. Despite rainfall, initial attack resources could be overwhelmed and holdover fires are possible. * Affected area: In South Central OR...Fire Weather Zone 625. * Wind: Southerly 5-10 mph, except gusty and erratic wind gusts 30 to 40 mph in stronger thunderstorms. * Thunderstorms: Thunderstorms are expected to begin to develop near Silver Lake and Summer Lake early in the afternoon and then expand in area and coverage across FWZ 625 through the afternoon and into the evening. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD Precautionary/preparedness actions... A Red Flag Warning does not mean there is a fire. It means that critical fire weather conditions are either occurring now or will shortly. These conditions promote rapid spread of fire which may become life threatening. Evacuate if ordered to, or if a fire threatens. $$ Visit us at www.weather.gov/Medford
994 WWUS86 KMFR 021319 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 619 AM PDT Mon Aug 2 2021 ORZ625-030300- /O.CON.KMFR.FW.W.0034.210802T2100Z-210803T0300Z/ South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 619 AM PDT Mon Aug 2 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM PDT THIS EVENING FOR ABUNDANT LIGHTNING ON DRY FUELS FOR FIRE WEATHER ZONE 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 South Central OR...Fire Weather Zone 625. * Thunderstorms: Thunderstorms are expected to begin to develop near Silver Lake and Summer Lake early in the afternoon and then expand in area and coverage across FWZ 625 through the afternoon and into the evening. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD Precautionary/preparedness actions... 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
212 WWUS86 KMFR 022219 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 319 PM PDT Mon Aug 2 2021 ...Scattered Thunderstorms Across FWZ625 Through This Evening... ...Gusty winds, Very Low RH, and Unstable Haines 6 Conditions Along, Near, and East of the Cascades Tuesday and Wednesday... Scattered thunderstorms will continue across FWZ 625 this afternoon and evening. Conditions are transitioning to drier and windier across the area today, and dryness, instability, and breezy conditions along and near the Cascades eastward will result in critical conditions Tuesday afternoon and evening and then, moreso, Wednesday afternoon and evening. CAZ281-284-285-031400- /O.NEW.KMFR.FW.W.0035.210803T2100Z-210804T0300Z/ /O.NEW.KMFR.FW.A.0026.210804T2000Z-210805T0500Z/ 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- 319 PM PDT Mon Aug 2 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 281...284 AND 285... ...FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 281...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. A Fire Weather Watch has also been issued and in effect from Wednesday afternoon through Wednesday evening. * Impacts: Strong, gusty wind with very low relative humidity, critically dry vegetation, and dry, unstable conditions will greatly increase the spread potential of any new and existing fires. * Affected area: In Northern CA...Fire Weather Zones 281...284 and 285. * Wind: - South 10 to 20 mph with gusts 20 to 30 mph Tuesday. - South 15 to 25 mph with gusts 25 to 40 mph Wednesday. * Minimum Humidity: - As 6 to 12 percent. * Additional Information: Conditions will be more critical and more widespread Wednesday versus Tuesday. * 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. 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. && $$ ORZ624-031400- /O.NEW.KMFR.FW.W.0035.210803T2100Z-210804T0300Z/ /O.NEW.KMFR.FW.A.0026.210804T2000Z-210805T0500Z/ Klamath Basin and the Fremont-Winema National Forest- 319 PM PDT Mon Aug 2 2021 ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 8 PM PDT TUESDAY FOR STRONG GUSTY WIND WITH LOW RH AND DRY, UNSTABLE HAINES 6 CONDITIONS FOR FIRE WEATHER ZONE 624... ...FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH AND DRY, UNSTABLE HAINES 6 CONDITIONS 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 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, dry, unstable high level Haines 6 conditions, 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 10 to 15 mph with gusts 20 to 30 mph. * Humidity: 6 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. 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. && $$ ORZ625-030300- /O.CON.KMFR.FW.W.0034.000000T0000Z-210803T0300Z/ South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 319 PM PDT Mon Aug 2 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING FOR ABUNDANT LIGHTNING ON DRY FUELS FOR FIRE WEATHER ZONE 625... * Impacts: Lightning on dry fuels is likely to result in new fire starts. Gusty thunderstorm winds could contribute to fire spread. Despite localized wetting rainfall in storm cores, initial attack resources could be overwhelmed and holdover fires are likely. * Affected area: In South Central OR...Fire Weather Zone 625. * Thunderstorms: Strong, gusty outflow winds in the 30 to 40 mph range are possible with stronger thunderstorms. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ CAZ280-282-ORZ623-031400- /O.NEW.KMFR.FW.A.0026.210804T2000Z-210805T0500Z/ Western Klamath National Forest-Shasta- Trinity National Forest in Siskiyou County- Southern Oregon Cascades- 319 PM PDT Mon Aug 2 2021 ...FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 280...282 AND 623... The National Weather Service in Medford has issued a Fire Weather Watch...which 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 Zones...280...282. In Southwest OR Fire Zone....623. * Wind: Southwest 10 to 15 mph with gusts up to 25 mph. * Humidity: 6 to 14 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD Precautionary/preparedness actions... 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. && $$ BTL Visit us at www.weather.gov/Medford
327
WWUS86 KMFR 030250
RFWMFR
URGENT - FIRE WEATHER MESSAGE
National Weather Service Medford OR
750 PM PDT Mon Aug 2 2021
...GUSTY WINDS, VERY LOW RH, AND UNSTABLE HAINES 6 CONDITIONS
ALONG, NEAR, AND EAST OF THE CASCADES TUESDAY AND WEDNESDAY...
.Dryness, instability, and breezy conditions along and near the
Cascades eastward will result in critical conditions Tuesday
afternoon and evening and, more so, Wednesday afternoon and
evening.
ORZ625-030400-
/O.EXP.KMFR.FW.W.0034.000000T0000Z-210803T0300Z/
South Central Oregon Desert including the BLM Land in Eastern Lake
and Western Harney Counties-
750 PM PDT Mon Aug 2 2021
...RED FLAG WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING FOR
ABUNDANT LIGHTNING ON DRY FUELS FOR FIRE WEATHER ZONE 625...
Thunderstorms are moving out of the area.
&&
$$
CAZ281-284-285-032200-
/O.CON.KMFR.FW.W.0035.210803T2100Z-210804T0300Z/
/O.CON.KMFR.FW.A.0026.210804T2000Z-210805T0500Z/
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-
750 PM PDT Mon Aug 2 2021
...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM TO 8 PM PDT
TUESDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER
ZONES 281...284 AND 285...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON
THROUGH WEDNESDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH
FOR FIRE WEATHER ZONES 281...284 AND 285...
* Impacts: Strong, gusty wind with very low relative humidity,
critically dry vegetation, and dry, unstable conditions will
greatly increase the spread potential of any new and existing
fires.
* Affected area:
In Northern CA...Fire Weather Zones 281...284 and 285.
* Wind: South 10 to 20 mph with gusts 20 to 30 mph Tuesday.
South 15 to 25 mph with gusts 25 to 40 mph Wednesday.
* Minimum Humidity: 6 to 12 percent.
* Additional Information: Conditions will be more critical and
more widespread Wednesday as compared to Tuesday.
* 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.
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.
&&
$$
ORZ624-032200-
/O.CON.KMFR.FW.W.0035.210803T2100Z-210804T0300Z/
/O.CON.KMFR.FW.A.0026.210804T2000Z-210805T0500Z/
Klamath Basin and the Fremont-Winema National Forest-
750 PM PDT Mon Aug 2 2021
...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM TO 8 PM PDT
TUESDAY FOR STRONG GUSTY WIND WITH LOW RH AND DRY, UNSTABLE
HAINES 6 CONDITIONS FOR FIRE WEATHER ZONE 624...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON
THROUGH WEDNESDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH AND
DRY, UNSTABLE HAINES 6 CONDITIONS FOR FIRE WEATHER ZONE 624...
* Impacts: Strong, gusty wind with low relative humidity, dry,
unstable high level Haines 6 conditions, and critically dry
vegetation will greatly increase the spread potential of any new
and existing fires.
* Affected area:
In South Central OR...Fire Weather Zone 624.
* Wind: Southwest 10 to 15 mph with gusts 20 to 30 mph.
* Humidity: 6 to 12 percent.
* View the hazard area in detail at:
https://www.wrh.noaa.gov/mfr/HAZARD
Precautionary/preparedness actions...
Avoid tossing burning cigarettes on the ground, parking hot
vehicles on dry vegetation, and using equipment that can cause
sparks. Follow all fire restrictions. Find links to restrictions
at weather.gov/medford/wildfire. One less spark, one less
wildfire.
A Red Flag Warning does not mean there is a fire. It means that
critical fire weather conditions are either occurring now or will
shortly. These conditions promote rapid spread of fire which may
become life threatening. Evacuate if ordered to, or if a fire
threatens.
A Fire Weather Watch means that critical fire weather conditions
are possible during the valid watch time. These conditions could
promote the rapid spread of wildfires which could become life-
threatening. Check weather.gov/medford for forecast updates and a
possible upgrade of the this watch to a Red Flag Warning.
&&
$$
CAZ280-282-ORZ623-032200-
/O.CON.KMFR.FW.A.0026.210804T2000Z-210805T0500Z/
Western Klamath National Forest-Shasta-
Trinity National Forest in Siskiyou County-
Southern Oregon Cascades-
750 PM PDT Mon Aug 2 2021
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON
THROUGH WEDNESDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR
FIRE WEATHER ZONES 280...282 AND 623...
* 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 Zones...280...282.
In Southwest OR Fire Zone....623.
* Wind: Southwest 10 to 15 mph with gusts up to 25 mph.
* Humidity: 6 to 14 percent.
* View the hazard area in detail at:
https://www.wrh.noaa.gov/mfr/HAZARD
Precautionary/preparedness actions...
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/MedfordNearby
Red Flag Warnings in Oregon, 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.