Alert archive / Oregon / Red Flag Warnings in 2017
Red Flag Warning 39, NWS Medford, OR
NWS Medford, OR issued this red flag warning at Aug 30, 2017, 4:31 AM PDT for Harney County, Klamath County, Lake County, Oregon; Modoc County, California. It took effect at Aug 30, 2017, 1:00 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 30, 2017, 4:31 AM PDT (11:31 UTC)
- In effect from
- Aug 30, 2017, 1:00 PM PDT
- Expired
- Aug 30, 2017, 7:00 PM PDT
- In force
- 6 hr
- Issued by
- NWS Medford, OR
Counties Modoc County, CA, Harney County, OR, Klamath County, OR, Lake County, OR
The radar
The Medford radar (KMAX), 194 km from the middle of the area, began a volume at 11:30 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 00:00Z, 11.5 hours before the alert went out and 195 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
- 6 J/kg
- Mixed-layer CIN
- -622 J/kg
- Mixed-layer LCL
- 3571 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- -55 m²/s²
- 0-3 km storm-relative helicity
- 53 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
886 WWUS86 KMFR 301131 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 431 AM PDT Wed Aug 30 2017 CAZ285-ORZ624-625-302345- /O.NEW.KMFR.FW.W.0039.170830T2000Z-170831T0200Z/ 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- 431 AM PDT Wed Aug 30 2017 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM PDT THIS EVENING FOR THE COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITIES FOR FIRE WEATHER ZONES 285...624 AND 625... The National Weather Service in Medford has issued a Red Flag Warning, which is in effect from 1 PM this afternoon to 7 PM PDT this evening. * Counties affected: In Northern CA...Modoc. In South Central OR...Lake. * Affected area: In Northern CA...Fire Weather Zone 285 along both sides of US Highway 395 and eastward to the Warner Mountains...including Alturas. In South Central OR...Fire Weather Zones 624 and 625...in the Fremont-Winema National Forest along both sides of US Highway 395 southward from Valley Falls, and eastward across southeast Lake County...including Lakeview. This covers a majority of the area that received lightning strikes on Tuesday evening. * Wind...Southwest 15 to 20 mph with gusts to 30 mph this afternoon into the early evening. * Minimum Relative Humidity...9 to 15 percent. * Impacts...Very dry vegetation combined with gusty southwest winds, low relative humidity, and unstable conditions will lead to the potential for rapid fire growth on existing wildfires and any new starts this afternoon and early evening. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr Precautionary/preparedness actions... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity and warm temperatures will create extreme fire growth potential. && $$ ORZ618-619-302345- /O.NEW.KMFR.FW.A.0033.170901T0300Z-170901T1600Z/ Southern Oregon Coast-Western Rogue River- Siskiyou National Forest- 431 AM PDT Wed Aug 30 2017 ...FIRE WEATHER WATCH IN EFFECT FROM THURSDAY EVENING THROUGH FRIDAY MORNING FOR THE COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITIES FOR FIRE WEATHER ZONES 618 AND 619... The National Weather Service in Medford has issued a Fire Weather Watch, which is in effect from Thursday evening through Friday morning. * Affected area: The portion of fire weather zones 618 and 619 inland from the beaches in Curry County, including the Chetco Bar Fire. * Wind...Northeast 10 to 20 mph with gusts up to 30 mph. * Maximum Relative Humidity...Relative humidity recovery of 30 to 40 percent is expected at mid slopes and ridge tops on Friday morning. * Impacts...Gusty northeast winds with low relative humidity and very high fire danger will contribute to the potential for significant spread of new and existing fires. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr Precautionary/preparedness actions... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ DW Visit us at www.weather.gov/medford
2 follow-up statements
894 WWUS86 KMFR 302145 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 245 PM PDT Wed Aug 30 2017 ORZ618-619-311200- /O.UPG.KMFR.FW.A.0033.170901T0300Z-170901T1600Z/ /O.NEW.KMFR.FW.W.0040.170831T1900Z-170901T1600Z/ Southern Oregon Coast-Western Rogue River- Siskiyou National Forest- 245 PM PDT Wed Aug 30 2017 ...RED FLAG WARNING IN EFFECT FROM NOON THURSDAY TO 9 AM PDT FRIDAY FOR GUSTY NORTHEAST WINDS AND LOW HUMIDITY FOR PORTIONS OF FIRE WEATHER ZONES 618 AND 619... The National Weather Service in Medford has upgraded the Fire Weather Watch to a Red Flag Warning, which is in effect from noon Thursday to 9 AM PDT Friday. * Affected area...Portions of fire weather zones 618 and 619 inland from the beaches in Curry County, including the Chetco Bar Fire. Higher terrain areas will see the strongest winds and low humidity. * Wind...Northeast 10 to 20 mph with gusts up to 30 mph. * Maximum Relative Humidity...15 to 25 percent Thursday afternoon with humidity recoveries Thursday night of 25 to 35 percent. * Impacts...Gusty northeast winds with low relative humidity and very high fire danger will contribute to the potential for significant spread of new and existing fires. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr Precautionary/preparedness actions... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity and warm temperatures will create extreme fire growth potential. && $$ CAZ280-311200- /O.NEW.KMFR.FW.W.0040.170901T0300Z-170901T1600Z/ Western Klamath National Forest- 245 PM PDT Wed Aug 30 2017 ...RED FLAG WARNING IN EFFECT FROM 8 PM THURSDAY TO 9 AM PDT FRIDAY FOR GUSTY EAST WINDS AND LOW OVERNIGHT HUMIDITY RECOVERY FOR UPPER SLOPES AND RIDGES OF WESTERN FIRE WEATHER ZONE 280... The National Weather Service in Medford has issued a Red Flag Warning, which is in effect from 8 PM Thursday to 9 AM PDT Friday. * Affected area...Upper slopes and ridges of Western Fire Weather Zone 280 in Western Siskiyou County. * Wind...East 10 to 15 mph with gusts to 25 mph. * Humidity...20 to 30 percent. * Impacts...Gusty northeast winds with low relative humidity and very high fire danger will contribute to the potential for significant spread of new and existing fires. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr Precautionary/preparedness actions... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity and warm temperatures will create extreme fire growth potential. && $$ ORZ617-621-623-311200- /O.NEW.KMFR.FW.W.0040.170901T0300Z-170901T1600Z/ Umpqua National Forest-Siskiyou Mountains- Southern Oregon Cascades- 245 PM PDT Wed Aug 30 2017 ...RED FLAG WARNING IN EFFECT FROM 8 PM THURSDAY TO 9 AM PDT FRIDAY FOR GUSTY EAST WINDS AND LOW OVERNIGHT HUMIDITY RECOVERY FOR HIGHER TERRAIN AREAS OF FIRE WEATHER ZONES 621...623...AND EASTERN 617... The National Weather Service in Medford has issued a Red Flag Warning, which is in effect from 8 PM Thursday to 9 AM PDT Friday. * Affected area...Higher terrain areas of fire weather zones 621...623 and eastern 617. * Wind...East 10 mph with gusts to 20 mph. * Humidity...20 to 30 percent. * Impacts...Gusty northeast winds with low relative humidity and very high fire danger will contribute to the potential for significant spread of new and existing fires. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr Precautionary/preparedness actions... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity and warm temperatures will create extreme fire growth potential. && $$ ORZ620-311200- /O.NEW.KMFR.FW.W.0040.170831T1900Z-170901T1600Z/ Western Rogue Basin including the Illinois Valley- 245 PM PDT Wed Aug 30 2017 ...RED FLAG WARNING IN EFFECT FROM NOON THURSDAY TO 9 AM PDT FRIDAY FOR GUSTY EAST WINDS AND LOW HUMIDITY FOR HIGHER TERRAIN AREAS OF WESTERN FIRE WEATHER ZONE 620... The National Weather Service in Medford has issued a Red Flag Warning, which is in effect from noon Thursday to 9 AM PDT Friday. * Affected area...High terrain areas of western fire weather zone 620. * Wind...East 10 to 15 mph with gusts to 25 mph. * Humidity...15 to 25 percent Thursday afternoon with humidity recoveries Thursday night of 25 to 35 percent. * Impacts...Gusty northeast winds with low relative humidity and very high fire danger will contribute to the potential for significant spread of new and existing fires. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr Precautionary/preparedness actions... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity and warm temperatures will create extreme fire growth potential. && $$ CAZ285-ORZ624-625-310200- /O.CON.KMFR.FW.W.0039.000000T0000Z-170831T0200Z/ 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- 245 PM PDT Wed Aug 30 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR EASTERN FIRE WEATHER ZONE 285 AND SOUTHERN FIRE WEATHER ZONE 624 AND 625... * Affected area...Eastern Fire Weather Zone 285...southeastern Fire Weather Zone 624...and southern Fire Weather Zone 625. * Wind...Southwest 15 to 20 mph with gusts to 30 mph this afternoon into the early evening. * Minimum Relative Humidity...8 to 12 percent. * Impacts...Gusty northeast winds with low relative humidity and very high fire danger will contribute to the potential for significant spread of new and existing fires. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr Precautionary/preparedness actions... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity and warm temperatures will create extreme fire growth potential. && $$ Visit us at www.weather.gov/medford
640 WWUS86 KMFR 310211 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 711 PM PDT Wed Aug 30 2017 CAZ285-ORZ624-625-310315- /O.EXP.KMFR.FW.W.0039.000000T0000Z-170831T0200Z/ Modoc County Except for the Surprise Valley- Klamath Basin and the Fremont-Winema National Forest- South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 711 PM PDT Wed Aug 30 2017 ...RED FLAG WARNING HAS EXPIRED FOR COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITIES FOR FIRE WEATHER ZONES 285...624 AND 625... Red Flag Warning for the combination of strong winds and low relative humidity for fire weather zones 285, 624 and 625 have expired. Winds will continue to decrease with relative humidities rising overnight. $$ CAZ280-311415- /O.CON.KMFR.FW.W.0040.170901T0300Z-170901T1600Z/ Western Klamath National Forest- 711 PM PDT Wed Aug 30 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM 8 PM THURSDAY TO 9 AM PDT FRIDAY FOR COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITIES FOR FIRE WEATHER ZONE 280... * Affected area...Upper slopes and ridges of western Fire Weather Zone 280 in western Siskiyou County. * Wind...East 10 to 15 mph with gusts to 25 mph. * Humidity...20 to 30 percent. * Impacts...Gusty northeast winds with low relative humidity and very high fire danger will contribute to the potential for significant spread of new and existing fires. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr Precautionary/preparedness actions... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity and warm temperatures will create extreme fire growth potential. && $$ ORZ617-621-623-311415- /O.CON.KMFR.FW.W.0040.170901T0300Z-170901T1600Z/ Umpqua National Forest-Siskiyou Mountains- Southern Oregon Cascades- 711 PM PDT Wed Aug 30 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM 8 PM THURSDAY TO 9 AM PDT FRIDAY FOR COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITIES FOR FIRE WEATHER ZONES 617...621 AND 623... * Affected area...Higher terrain areas of eastern Douglas County in the Umpqua National Forest in fire weather zone 617, the southern Oregon Cascades in eastern Jackson County in fire weather zone 623, and the Siskiyou Mountains in southern Jackson and southern Josephine Counties in fire weather zone 621. * Wind...East 10 mph with gusts to 20 mph. * Humidity...20 to 30 percent. * Impacts...Gusty northeast winds with low relative humidity and very high fire danger will contribute to the potential for significant spread of new and existing fires. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr Precautionary/preparedness actions... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity and warm temperatures will create extreme fire growth potential. && $$ ORZ618>620-311415- /O.CON.KMFR.FW.W.0040.170831T1900Z-170901T1600Z/ Southern Oregon Coast-Western Rogue River- Siskiyou National Forest- Western Rogue Basin including the Illinois Valley- 711 PM PDT Wed Aug 30 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON THURSDAY TO 9 AM PDT FRIDAY FOR COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITIES FOR FIRE WEATHER ZONES 618...619 AND 620... * Affected area...Inland from the beaches in southern Curry County, including the Chetco Bar Fire, in fire weather zones 618 and 619, and the high terrain of western Josephine County in fire weather zone 620. Higher terrain areas will see the strongest winds and lowest humidity. * Wind...Northeast to East 10 to 20 mph with gusts to 30 mph. * Humidity...15 to 25 percent Thursday afternoon with humidity recoveries Thursday night of 25 to 35 percent. * Impacts...Gusty northeast winds with low relative humidity and very high fire danger will contribute to the potential for significant spread of new and existing fires. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr Precautionary/preparedness actions... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity and warm temperatures will create extreme fire growth potential. && $$ 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 30, 3:43 AM PDT | Gale Watch | MFR | 10 hr | |
| Aug 30, 3:43 AM PDT | Small Craft Advisory | MFR | 67 hr | |
| Aug 30, 4:31 AM PDT | Fire Weather Watch | MFR | Coos, Curry, Josephine | 10 hr |
| Aug 30, 1:44 PM PDT | Excessive Heat Watch | MFR | Coos, Curry, Douglas, Jackson, Josephine, Klamath | 24 hr |
| Aug 30, 1:44 PM PDT | Gale Warning | MFR | 38 hr | |
| Aug 30, 2:45 PM PDT | Red Flag Warning | MFR | Coos, Curry, Douglas, Jackson, Josephine, Klamath and 1 more | 42 hr |
| Aug 29, 8:33 PM PDT | Red Flag Warning | MFR | Modoc | 87 min |
Nearby
Red Flag Warnings in Oregon, 2017Red Flag Warnings in California, 2017Every red flag warning in 2017
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.