Alert archive / Oregon / Red Flag Warnings in 2020
Red Flag Warning 25, NWS Medford, OR
NWS Medford, OR issued this red flag warning at Sep 13, 2020, 1:52 PM PDT for 5 counties in Oregon; Modoc County, Siskiyou County, California. It took effect at Sep 14, 2020, 12:00 PM PDT. It was in force for 9 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 13, 2020, 1:52 PM PDT (20:52 UTC)
- In effect from
- Sep 14, 2020, 12:00 PM PDT
- Expired
- Sep 14, 2020, 9:00 PM PDT
- In force
- 9 hr
- Issued by
- NWS Medford, OR
Counties Modoc County, CA, Siskiyou County, CA, Douglas County, OR, Harney County, OR, Jackson County, OR, Klamath County, OR, Lake County, OR
The radar
The Medford radar (KMAX), 114 km from the middle of the area, began a volume at 20:54 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, 8.9 hours before the alert went out and 111 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
- 2022 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 118 m²/s²
- 0-3 km storm-relative helicity
- 153 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
963 WWUS86 KMFR 132052 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 152 PM PDT Sun Sep 13 2020 ORZ624-625-140900- /O.UPG.KMFR.FW.A.0022.200914T1800Z-200915T0600Z/ /O.NEW.KMFR.FW.W.0025.200914T1900Z-200915T0400Z/ /O.NEW.KMFR.FW.A.0023.200915T1900Z-200916T0300Z/ /O.CON.KMFR.FW.W.0024.000000T0000Z-200914T0400Z/ Klamath Basin and the Fremont-Winema National Forest- South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 152 PM PDT Sun Sep 13 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 624 AND 625... ...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM PDT MONDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 624 AND 625... ...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... * Impacts: Gusty winds 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, most of Fire Weather Zones 624 and 625, including the Fremont-Winema National Forest and the Brattain fire. * Wind: South 20 to 25 mph with gusts up to 40 mph. * Humidity: As low as 7 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD && $$ CAZ284-285-140900- /O.UPG.KMFR.FW.A.0022.200914T1800Z-200915T0600Z/ /O.NEW.KMFR.FW.W.0025.200914T1900Z-200915T0400Z/ /O.NEW.KMFR.FW.A.0023.200915T1900Z-200916T0300Z/ /O.CON.KMFR.FW.W.0024.000000T0000Z-200914T0400Z/ Siskiyou County from the Cascade Mountains East and South to Mt Shasta-Modoc County Except for the Surprise Valley- 152 PM PDT Sun Sep 13 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284 AND 285... ...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM PDT MONDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284 AND 285... ...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284 AND 285... * Impacts: Gusty winds with low relative humidity and high fire danger will likely contribute to a significant spread of new and existing fires. * Affected area: In Northern CA, most of Fire Weather Zones 284 and 285, including portions of Modoc, Klamath, and Shasta-Trinity National Forests. * Wind: South 20 to 25 mph with gusts up to 35 mph. * Humidity: As low as 9 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD && $$ ORZ623-140900- /O.UPG.KMFR.FW.A.0022.200914T1800Z-200915T0600Z/ /O.NEW.KMFR.FW.W.0025.200914T1900Z-200915T0400Z/ /O.CON.KMFR.FW.W.0024.000000T0000Z-200914T0400Z/ Southern Oregon Cascades- 152 PM PDT Sun Sep 13 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 623... ...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM PDT MONDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 623... * Impacts: Gusty winds with low relative humidity and high fire danger will likely contribute to a significant spread of new and existing fires. * Affected area: In Southwest OR...Fire Weather Zone 623 including portions of the Fremont-Winema and Rogue River/Siskiyou National Forests. * Wind: Southwest 10 to 15 mph with gusts up to 25 mph. * Humidity: As low as 10 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD && $$ ORZ621-140400- /O.CON.KMFR.FW.W.0024.000000T0000Z-200914T0400Z/ Siskiyou Mountains- 152 PM PDT Sun Sep 13 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 621... * Impacts: Gusty winds with low relative humidity and high fire danger will likely contribute to a significant spread of new and existing fires. * Affected area: In Southwest OR...Fire Weather Zone 621, including portions of the Rogue River/Siskiyou National Forest. * Wind: Southwest 10 to 15 mph with gusts up to 25 mph. * Humidity: As low as 10 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ CAZ281-140400- /O.CON.KMFR.FW.W.0024.000000T0000Z-200914T0400Z/ Central Siskiyou County Including Shasta Valley- 152 PM PDT Sun Sep 13 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 281... * Impacts: Gusty winds 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, central and eastern Fire Weather Zone 281, including the Shasta Valley. * Wind: South 15 to 20 mph with gusts up to 30 mph. * Humidity: As low as 10 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ ORZ622-140300- /O.CON.KMFR.FW.W.0024.200913T2200Z-200914T0300Z/ Eastern Rogue Valley- 152 PM PDT Sun Sep 13 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 622... * Impacts: Strong, gusty wind with low relative humidity and high fire danger will likely contribute to a significant spread of new and existing fires. * Affected area: In Southwest OR...much of Fire Weather Zone 622, including the Obenchain and Almeda fires. * Wind: West to northwest 10 to 15 mph with gusts up to 25 mph. * Humidity: As low as 10 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ Visit us at www.weather.gov/Medford
7 follow-up statements
072 WWUS86 KMFR 140058 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 558 PM PDT Sun Sep 13 2020 ORZ624-625-141300- /O.CON.KMFR.FW.W.0024.000000T0000Z-200914T0400Z/ /O.CON.KMFR.FW.W.0025.200914T1900Z-200915T0400Z/ /O.CON.KMFR.FW.A.0023.200915T1900Z-200916T0300Z/ Klamath Basin and the Fremont-Winema National Forest- South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 558 PM PDT Sun Sep 13 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 624 AND 625... ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM PDT MONDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 624 AND 625... ...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, most of Fire Weather Zones 624 and 625, including the Fremont-Winema National Forest and the Brattain fire. * Wind: South 15 to 25 mph with gusts up to 40 mph. * Humidity: As low as 7 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ CAZ284-285-141300- /O.CON.KMFR.FW.W.0024.000000T0000Z-200914T0400Z/ /O.CON.KMFR.FW.W.0025.200914T1900Z-200915T0400Z/ /O.CON.KMFR.FW.A.0023.200915T1900Z-200916T0300Z/ Siskiyou County from the Cascade Mountains East and South to Mt Shasta-Modoc County Except for the Surprise Valley- 558 PM PDT Sun Sep 13 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284 AND 285... ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM PDT MONDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284 AND 285... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284 AND 285... * Impacts: Strong, gusty wind with low relative humidity and high fire danger will likely contribute to a significant spread of new and existing fires. * Affected area: In Northern CA, most of Fire Weather Zones 284 and 285, including portions of Modoc, Klamath, and Shasta-Trinity National Forests. * Wind: South 20 to 25 mph with gusts up to 35 mph. * Humidity: As low as 9 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ ORZ623-141300- /O.CON.KMFR.FW.W.0024.000000T0000Z-200914T0400Z/ /O.CON.KMFR.FW.W.0025.200914T1900Z-200915T0400Z/ Southern Oregon Cascades- 558 PM PDT Sun Sep 13 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 623... ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM PDT MONDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 623... * 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 Southwest OR...Fire Weather Zone 623. * Wind: South 10 to 15 mph with gusts up to 25 mph. * Humidity: As low as 10 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ ORZ621-140400- /O.CON.KMFR.FW.W.0024.000000T0000Z-200914T0400Z/ Siskiyou Mountains- 558 PM PDT Sun Sep 13 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 621... * Impacts: Gusty winds with low relative humidity and high fire danger will likely contribute to a significant spread of new and existing fires. * Affected area: In Southwest OR...Fire Weather Zone 621, including portions of the Rogue River/Siskiyou National Forest. * Wind: Southwest 10 to 15 mph with gusts up to 25 mph. * Humidity: As low as 10 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ CAZ281-140400- /O.CON.KMFR.FW.W.0024.000000T0000Z-200914T0400Z/ Central Siskiyou County Including Shasta Valley- 558 PM PDT Sun Sep 13 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 281... * 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 Northern CA...In Northern CA, central and eastern Fire Weather Zone 281, including the Shasta Valley. * Wind: Southwest 15 to 20 mph with gusts up to 30 mph. * Humidity: As low as 10 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ ORZ622-140300- /O.CON.KMFR.FW.W.0024.000000T0000Z-200914T0300Z/ Eastern Rogue Valley- 558 PM PDT Sun Sep 13 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 622... * Impacts: Gusty wind with low relative humidity and high fire danger will likely contribute to a significant spread of new and existing fires. * Affected area: In Southwest OR...much of Fire Weather Zone 622, mainly above 2500 ft elevation. This includes the Obenchain fire. * Wind: West to northwest 10 to 15 mph with gusts up to 25 mph. * Humidity: As low as 10 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ Visit us at www.weather.gov/Medford
833 WWUS86 KMFR 140250 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 750 PM PDT Sun Sep 13 2020 ORZ622-140400- /O.EXP.KMFR.FW.W.0024.000000T0000Z-200914T0300Z/ Eastern Rogue Valley- 750 PM PDT Sun Sep 13 2020 ...RED FLAG WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 622... Winds have begun to lower and humidities to rise. $$ ORZ624-625-141500- /O.CON.KMFR.FW.W.0024.000000T0000Z-200914T0400Z/ /O.CON.KMFR.FW.W.0025.200914T1900Z-200915T0400Z/ /O.CON.KMFR.FW.A.0023.200915T1900Z-200916T0300Z/ Klamath Basin and the Fremont-Winema National Forest- South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 750 PM PDT Sun Sep 13 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 624 AND 625... ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM PDT MONDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 624 AND 625... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 624 AND 625... * Impacts: Strong,gusty wind with low relative humidity and high fire danger will likely contribute to a significant spread of new and existing fires. * Affected area: In South Central OR, most of Fire Weather Zones 624 and 625, including the Fremont-Winema National Forest and the Brattain fire. * Wind: South 15 to 25 mph with gusts up to 40 mph. * Humidity: As low as 7 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ CAZ284-285-141500- /O.CON.KMFR.FW.W.0024.000000T0000Z-200914T0400Z/ /O.CON.KMFR.FW.W.0025.200914T1900Z-200915T0400Z/ /O.CON.KMFR.FW.A.0023.200915T1900Z-200916T0300Z/ Siskiyou County from the Cascade Mountains East and South to Mt Shasta-Modoc County Except for the Surprise Valley- 750 PM PDT Sun Sep 13 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284 AND 285... ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM PDT MONDAY 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: 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 Northern CA, most of Fire Weather Zones 284 and 285, including portions of Modoc, Klamath, and Shasta-Trinity National Forests. * Wind: South 20 to 25 mph with gusts up to 35 mph. * Humidity: As low as 9 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ ORZ623-141500- /O.CON.KMFR.FW.W.0024.000000T0000Z-200914T0400Z/ /O.CON.KMFR.FW.W.0025.200914T1900Z-200915T0400Z/ Southern Oregon Cascades- 750 PM PDT Sun Sep 13 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 623... ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM PDT MONDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 623... * Impacts: Gusty wind with low relative humidity and high fire danger will likely contribute to a significant spread of new and existing fires. * Affected area: In Southwest OR...Fire Weather Zone 623. * Wind: South 10 to 15 mph with gusts up to 25 mph. * Humidity: As low as 10 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ ORZ621-140400- /O.CON.KMFR.FW.W.0024.000000T0000Z-200914T0400Z/ Siskiyou Mountains- 750 PM PDT Sun Sep 13 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 621... * Impacts: Gusty winds with low relative humidity and high fire danger will likely contribute to a significant spread of new and existing fires. * Affected area: In Southwest OR...Fire Weather Zone 621, including portions of the Rogue River/Siskiyou National Forest. * Wind: Southwest 10 to 15 mph with gusts up to 25 mph. * Humidity: As low as 10 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ CAZ281-140400- /O.CON.KMFR.FW.W.0024.000000T0000Z-200914T0400Z/ Central Siskiyou County Including Shasta Valley- 750 PM PDT Sun Sep 13 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 281... * Impacts: Strong, gusty wind with low relative humidity and high fire danger will likely contribute to a significant spread of new and existing fires. * Affected area: In Northern CA...In Northern CA, central and eastern Fire Weather Zone 281, including the Shasta Valley. * Wind: Southwest 15 to 20 mph with gusts up to 30 mph. * Humidity: As low as 10 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ Visit us at www.weather.gov/Medford
799 WWUS86 KMFR 140554 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 1054 PM PDT Sun Sep 13 2020 ORZ624-625-141800- /O.CON.KMFR.FW.W.0025.200914T1900Z-200915T0400Z/ /O.CON.KMFR.FW.A.0023.200915T1900Z-200916T0300Z/ Klamath Basin and the Fremont-Winema National Forest- South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 1054 PM PDT Sun Sep 13 2020 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM PDT MONDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 624 AND 625... ...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, most of Fire Weather Zones 624 and 625, including the Fremont-Winema National Forest and the Brattain fire. * Wind: South 15 to 25 mph with gusts up to 40 mph. * Humidity: As low as 7 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ CAZ284-285-141800- /O.CON.KMFR.FW.W.0025.200914T1900Z-200915T0400Z/ /O.CON.KMFR.FW.A.0023.200915T1900Z-200916T0300Z/ Siskiyou County from the Cascade Mountains East and South to Mt Shasta-Modoc County Except for the Surprise Valley- 1054 PM PDT Sun Sep 13 2020 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM PDT MONDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284 AND 285... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284 AND 285... * Impacts: Strong, gusty wind with low relative humidity and high fire danger will likely contribute to a significant spread of new and existing fires. * Affected area: In Northern CA, most of Fire Weather Zones 284 and 285, including portions of Modoc, Klamath, and Shasta-Trinity National Forests. * Wind: South 20 to 25 mph with gusts up to 35 mph. * Humidity: As low as 9 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ ORZ623-141800- /O.CON.KMFR.FW.W.0025.200914T1900Z-200915T0400Z/ Southern Oregon Cascades- 1054 PM PDT Sun Sep 13 2020 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM PDT MONDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 623... * 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 Southwest OR...Fire Weather Zone 623. * Wind: South 10 to 15 mph with gusts up to 25 mph. * Humidity: As low as 10 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ Visit us at www.weather.gov/Medford
010 WWUS86 KMFR 141233 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 533 AM PDT Mon Sep 14 2020 ORZ624-625-150045- /O.CON.KMFR.FW.W.0025.200914T1900Z-200915T0400Z/ /O.CON.KMFR.FW.A.0023.200915T1900Z-200916T0300Z/ Klamath Basin and the Fremont-Winema National Forest- South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 533 AM PDT Mon Sep 14 2020 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 624 AND 625... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 624 AND 625... * Impacts: Strong,gusty wind with low relative humidity and high fire danger will likely contribute to a significant spread of new and existing fires. * Affected area: In South Central OR, most of Fire Weather Zones 624 and 625, including the Fremont-Winema National Forest and the Brattain fire. * Wind: South 15 to 25 mph with gusts up to 40 mph. * Humidity: As low as 7 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ CAZ284-285-150045- /O.CON.KMFR.FW.W.0025.200914T1900Z-200915T0400Z/ /O.CON.KMFR.FW.A.0023.200915T1900Z-200916T0300Z/ Siskiyou County from the Cascade Mountains East and South to Mt Shasta-Modoc County Except for the Surprise Valley- 533 AM PDT Mon Sep 14 2020 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 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: 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 Northern CA, most of Fire Weather Zones 284 and 285, including portions of Modoc, Klamath, and Shasta-Trinity National Forests. * Wind: South 20 to 25 mph with gusts up to 35 mph. * Humidity: As low as 9 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ ORZ623-150045- /O.CON.KMFR.FW.W.0025.200914T1900Z-200915T0400Z/ Southern Oregon Cascades- 533 AM PDT Mon Sep 14 2020 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 623... * Impacts: Gusty wind with low relative humidity and high fire danger will likely contribute to a significant spread of new and existing fires. * Affected area: In Southwest OR...Southern Fire Weather Zone 623. * Wind: South 10 to 15 mph with gusts up to 25 mph. * Humidity: As low as 10 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ Visit us at www.weather.gov/Medford
316 WWUS86 KMFR 142004 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 104 PM PDT Mon Sep 14 2020 ORZ624-625-150815- /O.UPG.KMFR.FW.A.0023.200915T1900Z-200916T0300Z/ /O.NEW.KMFR.FW.W.0026.200915T1900Z-200916T0300Z/ /O.NEW.KMFR.FW.A.0024.200916T1900Z-200917T0500Z/ /O.CON.KMFR.FW.W.0025.000000T0000Z-200915T0400Z/ Klamath Basin and the Fremont-Winema National Forest- South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 104 PM PDT Mon Sep 14 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 624 AND 625... ...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM PDT TUESDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 624 AND 625... ...FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 624 AND 625... * 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 South Central OR, most of Fire Weather Zones 624 and 625, including the Fremont-Winema National Forest and the Brattain fire. * Wind: South 15 to 25 mph with gusts up to 40 mph. * Humidity: As low as 7 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD && $$ CAZ284-285-150815- /O.UPG.KMFR.FW.A.0023.200915T1900Z-200916T0300Z/ /O.NEW.KMFR.FW.W.0026.200915T1900Z-200916T0300Z/ /O.NEW.KMFR.FW.A.0024.200916T1900Z-200917T0500Z/ /O.CON.KMFR.FW.W.0025.000000T0000Z-200915T0400Z/ Siskiyou County from the Cascade Mountains East and South to Mt Shasta-Modoc County Except for the Surprise Valley- 104 PM PDT Mon Sep 14 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284 AND 285... ...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM PDT TUESDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284 AND 285... ...FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284 AND 285... * Impacts: Gusty wind with low relative humidity and high fire danger will likely contribute to a significant spread of new and existing fires. * Affected area: In Northern CA, most of Fire Weather Zones 284 and 285, including portions of Modoc, Klamath, and Shasta-Trinity National Forests. * Wind: South 20 to 25 mph with gusts up to 35 mph. * Humidity: As low as 10 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD && $$ ORZ623-150400- /O.CON.KMFR.FW.W.0025.000000T0000Z-200915T0400Z/ Southern Oregon Cascades- 104 PM PDT Mon Sep 14 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 623... * 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 Southwest OR...Southern Fire Weather Zone 623. * Wind: Southwest 10 to 15 mph with gusts up to 25 mph. * Humidity: As low as 10 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ Visit us at www.weather.gov/Medford BPN
151 WWUS86 KMFR 142223 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 323 PM PDT Mon Sep 14 2020 CAZ281-150300- /O.EXB.KMFR.FW.W.0025.000000T0000Z-200915T0300Z/ Central Siskiyou County Including Shasta Valley- 323 PM PDT Mon Sep 14 2020 ...RED FLAG WARNING IN EFFECT UNTIL 8 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 281... The National Weather Service in Medford has issued a Red Flag Warning...which is in effect until 8 PM PDT this evening. * Impacts: Strong, gusty wind with low relative humidity and high fire danger will likely contribute to a significant spread of new and existing fires. * Affected area: In Northern CA...Fire Weather Zone 281. This includes southern and eastern portions of the Shasta Valley. * Wind: South 15 to 25 mph with gusts up to 40 mph. * Humidity: 7 to 15 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD Precautionary/preparedness actions... Strong winds and low relative humidities will cause fires to spread very rapidly. && $$ ORZ624-625-151030- /O.CON.KMFR.FW.W.0025.000000T0000Z-200915T0400Z/ /O.CON.KMFR.FW.W.0026.200915T1900Z-200916T0300Z/ /O.CON.KMFR.FW.A.0024.200916T1900Z-200917T0500Z/ Klamath Basin and the Fremont-Winema National Forest- South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 323 PM PDT Mon Sep 14 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 624 AND 625... ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM PDT TUESDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 624 AND 625... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 624 AND 625... * 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 South Central OR, most of Fire Weather Zones 624 and 625, including the Fremont-Winema National Forest and the Brattain fire. * Wind: South 15 to 25 mph with gusts up to 40 mph. * Humidity: As low as 7 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ CAZ284-285-151030- /O.CON.KMFR.FW.W.0025.000000T0000Z-200915T0400Z/ /O.CON.KMFR.FW.W.0026.200915T1900Z-200916T0300Z/ /O.CON.KMFR.FW.A.0024.200916T1900Z-200917T0500Z/ Siskiyou County from the Cascade Mountains East and South to Mt Shasta-Modoc County Except for the Surprise Valley- 323 PM PDT Mon Sep 14 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284 AND 285... ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM PDT TUESDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284 AND 285... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 284 AND 285... * Impacts: Gusty wind with low relative humidity and high fire danger will likely contribute to a significant spread of new and existing fires. * Affected area: In Northern CA, most of Fire Weather Zones 284 and 285, including portions of Modoc, Klamath, and Shasta-Trinity National Forests. * Wind: South 20 to 25 mph with gusts up to 35 mph. * Humidity: As low as 10 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ ORZ623-150400- /O.CON.KMFR.FW.W.0025.000000T0000Z-200915T0400Z/ Southern Oregon Cascades- 323 PM PDT Mon Sep 14 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 623... * 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 Southwest OR...Southern Fire Weather Zone 623. * Wind: Southwest 10 to 15 mph with gusts up to 25 mph. * Humidity: As low as 10 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ Visit us at www.weather.gov/Medford
249 WWUS86 KMFR 150349 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 849 PM PDT Mon Sep 14 2020 ORZ624-625-151600- /O.EXP.KMFR.FW.W.0025.000000T0000Z-200915T0400Z/ /O.CON.KMFR.FW.W.0026.200915T1900Z-200916T0300Z/ /O.CON.KMFR.FW.A.0024.200916T1900Z-200917T0500Z/ Klamath Basin and the Fremont-Winema National Forest- South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties- 849 PM PDT Mon Sep 14 2020 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM PDT TUESDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 624 AND 625... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 624 AND 625... ...RED FLAG WARNING WILL EXPIRE AT 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 624 AND 625... * Impacts: Gusty wind with low relative humidity and high fire danger will likely contribute to a significant spread of new and existing fires. * Affected area: In South Central OR, most of Fire Weather Zones 624 and 625, including the Fremont-Winema National Forest and the Brattain fire. * Wind: South 15 to 25 mph with gusts up to 40 mph. * Humidity: As low as 7 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ CAZ284-285-151600- /O.EXP.KMFR.FW.W.0025.000000T0000Z-200915T0400Z/ /O.CON.KMFR.FW.W.0026.200915T1900Z-200916T0300Z/ /O.CON.KMFR.FW.A.0024.200916T1900Z-200917T0500Z/ Siskiyou County from the Cascade Mountains East and South to Mt Shasta-Modoc County Except for the Surprise Valley- 849 PM PDT Mon Sep 14 2020 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM PDT TUESDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 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 284 AND 285... ...RED FLAG WARNING WILL EXPIRE AT 9 PM PDT THIS 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, most of Fire Weather Zones 284 and 285, including portions of Modoc, Klamath, and Shasta-Trinity National Forests. * Wind: South 20 to 25 mph with gusts up to 35 mph. * Humidity: As low as 10 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ ORZ623-150500- /O.EXP.KMFR.FW.W.0025.000000T0000Z-200915T0400Z/ Southern Oregon Cascades- 849 PM PDT Mon Sep 14 2020 ...RED FLAG WARNING WILL EXPIRE AT 9 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 623... Humidities this evening are starting to rise some and winds have begun to lower in many areas. $$ Visit us at www.weather.gov/Medford
What forecasters said that day
The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Medford, OR wrote its last area forecast discussion before this red flag warning went out at Sep 13, 9:35 AM PDT, 4 hours 17 minutes earlier.
Area forecast discussion, Sep 13, 9:35 AM PDT, 4 hours 17 minutes before
Area Forecast Discussion
National Weather Service Medford OR
935 AM PDT Sun Sep 13 2020
.DISCUSSION...Previous forecast is on track and no changes are
needed for this morning. Smoke remain thick, but a south flow is
setting up over the area, so some areas near and at the coast are
starting to see some improvement with the emphasis on some.
Temperatures could end up a couple of degrees higher if the smoke
thins out enough late this morning and afternoon, but confidence
on this is low. Even of there is any improvement, it will be
temporary with it becoming thicker again this evening and tonight
as an inversion sets up essentially trapping the smoke near the
surface.
It will be dry through tonight. An upper low situated over the
eastern Pacific will slowly inch towards the coast, but it may not
be until late in the week when we have the best chance for
precipitation for most ofthe forecast area. -Petrucelli
&&
.AVIATION...For the 13/12Z TAFs...Wildfire smoke will continue to be
a major impact, especially into Sunday morning. At the coast, expect
a mix of fog/marine stratus and smoke as well. IFR/LIFR cigs/vis
continues into Sunday morning. Partial improvement to a mix of
IFR/MVFR is expected again later Sunday morning into the afternoon.
Inland, LIFR to IFR visibilities and IFR to MVFR smoke ceilings are
expected through the period. No improvement or slight worsening in
smoky conditions is expected into Sunday morning. The worst CIG/VIS
conditions should be expected in the early morning. Increasing low
level winds later Sunday afternoon will bring at least slight
improvement in visibility per the hrrr smoke model. -Miles
&&
.MARINE...Updated 900 AM PDT Sunday 13 September 2020....A mix of
light north and variable winds with low seas will persist through
Sunday. Marine stratus, fog, and wildfire smoke, dense at times,
will continue to affect visibilities, especially close to the
coast through the weekend.
Monday morning, south winds increase as a front approaches the area
and steep, choppy seas are likely late Monday afternoon and night,
mainly for the outer waters beyond 8 nm from shore. Steep seas will
result from a building WSW swell (peaking at 5 ft, 8 sec.) combining
with southerly wind waves. Winds and seas are expected to lower
Tuesday into Wednesday. -Miles/Petrucelli
&&
.PREV DISCUSSION... /Issued 443 AM PDT Sun Sep 13 2020/
DISCUSSION...Smoke continues over the entire forecast area and
is dense in the westside valleys and some east side valley
locations and Klamath Basin east of the Cascades. West of the
Cascades it's dense enough where visibility has been reduced to
around 3/4 mile at the Medford Airport and the smoke models
continue suggest the near surface smoke will improve slightly
today with general visibilities around 2 miles. A dense smoke
advisory remains in effect until 8 am. Please see NPWMFR for more
details. There is smoke east of the Cascades, but it's not as
dense. The smoke layer will still be thick enough where it will
still slow down the amount of warming quite a bit for most
locations west of the Cascades. Highs today are a little higher
than yesterday with the more southwesterly flow at ridge levels
and a little above pushing the smoke a little more to the east,
but confidence is not high enough to remove definite smoke
wording.
As an upper trough moves closer to the coast winds will increase
this afternoon ahead of a dry front, with gusty southwest winds
east of the Cascades. Although winds will not be approaching wind
advisory levels, humidities will continue to be low and a red flag
warning continues to be in place starting late morning. yesterday
saw very weak up valley flow west of the Cascades with poor
heating in a strong inversion under the smoke layer, but with the
dry cold front the afternoon up valley flow should be stronger,
with the same very dry air mass bringing red flag condition in
Jackson county this afternoon. Residents in these areas should
continue to take precautions by keeping defensible space around
their homes free of flammable materials, gutters clear etc. If
you don't have a "go bag" ready, now is a great time to prepare.
Go to ready.gov for wildfire tips and a list to build a kit, or
"go bag".
Models continue to keep the upper low well off shore with the
omega block firmly in place over the great basin. The blocking
patter weakens into Monday and the upper low nudges slightly
closer to the coast, with gusty winds and low humidity continuing
east of the Cascades Monday afternoon. a weak front brings light
precipitation to the coast, but with the ridge to the east this
front washes out and remains only at the coast.
The closed upper low wobbles a bit closer to the coast into
Thursday, with southerly flow bringing more moisture. Models are
indicating instability in western Siskiyou county and up along the
Cascades, but with the extensive smoke coverage confidence is not
high enough to go above slight chance as smoke feeding up from
fires in California, as well as the Slater fire straddling the
state line, may keep a strong inversion as well as overwhelming
condensation nuclei.
As we head into the end of the week models continue to indicate
the upper trough finally moving onshore, bringing precipitation
across the east side, and winds becoming more westerly and
possibly pushing the heavier smoke to the east. Sven
AVIATION...For the 13/12Z TAFs...Wildfire smoke will continue to be
a major impact, especially into Sunday morning. At the coast, expect
a mix of fog/marine stratus and smoke as well. IFR/LIFR cigs/vis
continues into Sunday morning. Partial improvement to a mix of
IFR/MVFR is expected again later Sunday morning into the afternoon.
Inland, LIFR to IFR visibilities and IFR to MVFR smoke ceilings are
expected through the period. No improvement or slight worsening in
smoky conditions is expected into Sunday morning. The worst CIG/VIS
conditions should be expected in the early morning. Increasing low
level winds later Sunday afternoon will bring at least slight
improvement in visibility per the hrrr smoke model. -Miles
MARINE...Updated 200 AM PDT Sunday 13 September 2020....A mix
of light north and variable winds with low seas will persist through
Sunday. Marine stratus, fog, and wildfire smoke, dense at times,
will continue to affect visibilities, especially close to the coast
through the weekend.
Monday morning, south winds increase as a front approaches the area
and steep, choppy seas are likely late Monday afternoon and night,
mainly for the outer waters beyond 8 nm from shore. Steep seas will
result from a building WSW swell (peaking at 5 ft, 8 sec.) combining
with southerly wind waves. Winds and seas are expected to lower
Tuesday into Wednesday. -Miles
FIRE WEATHER...Updated 200 PM PDT Saturday 12 September 2020...
Overall, humidity recoveries will gradually improve from west to
east and recoveries will be noticeably better during the coming
days. Daytime humidities, however, will remain low through the
weekend with teens expected across inland west side valleys and
single digits for valleys east of the Cascades. Warm weather will
persist through the weekend but smoke will keep high temperatures
lower than typical under this pattern.
The weather pattern begins to change Sunday, as the upper ridge
shifts east due to an upper trough approaching the area. Southwest
winds ahead of this trough will increase, and gusts of 30 to 40 mph
are possible Sunday afternoon for the areas along and east of the
Cascades. Confidence is good that critical wind and humidity
conditions will be reached, and a Red Flag Warning is in effect. The
Storm Prediction Center has also placed these areas in a "critical"
fire weather outlook for low humidities and strong winds. Also,
conditions will approach critical conditions in the Rogue Valley and
the surrounding mountains as northwest winds increase there in the
afternoon. Current smoke cover will significantly limit daytime
heating, and this could prevent mixing and result in weaker winds
than forecast. However, given current ongoing fire activity and
recovery efforts in the area, fire weather concerns are heightened,
and as a result, a Red Flag has been issued for Sunday afternoon
covering much of Jackson County.
The upper level trough is expected to stall out just offshore, and
this will place the region under southwest flow aloft through Monday
and perhaps longer. The flow should help to thin the smoke, and
daytime heating should increase over that of Sunday. With increased
mixing, winds should once again strengthen during the afternoon and
evening hours east of the Cascades. A Fire Weather Watch has been
issued for Monday afternoon covering most areas east of the Cascades
and portions of the southern Cascades.
For more information on the expected conditions and the areas
covered by the fire weather headlines, see PDXRFWMFR.
Monday night into Tuesday could end up being the first day in quite
some time where we could see some measurable rainfall at the coast
or in some inland westside locations. However, wetting rains are not
likely east of the coastal mountain ranges. Operational models and
ensemble members continue to have difficulty bringing the trough and
front onshore, and while rain is expected along the coast, inland
areas may only see a few light showers through Wednesday or
Thursday. Typically, the first wet system of the season weakens
considerably as it moves into the very dry air under the ridge, and
this system is a good example of this. The upper level trough may
finally swing onshore and across the area late in the week, and this
will be the best chance for inland showers, but even then moisture
will be limited. At the least, we'll see a trend towards cooler
temperatures and slightly higher humidities, especially daytime
humidities, but the one thing we'll have to keep a watch on is
continued gusty winds along and east of the Cascades much of next
week. -BPN/Sandler
&&
.MFR WATCHES/WARNINGS/ADVISORIES...
OR...Red Flag Warning until 9 PM PDT this evening for ORZ624-625.
Fire Weather Watch from Monday morning through Monday evening
for ORZ624-625.
Red Flag Warning until 9 PM PDT this evening for ORZ621-623.
Fire Weather Watch from Monday morning through Monday evening
for ORZ623.
Red Flag Warning from 3 PM this afternoon to 8 PM PDT this
evening for ORZ622.
CA... Red Flag Warning until 9 PM PDT this evening for CAZ281.
Red Flag Warning until 9 PM PDT this evening for CAZ284-285.
Fire Weather Watch from Monday morning through Monday evening
for CAZ284-285.
Pacific Coastal Waters...Small Craft Advisory from 5 PM Monday to 11 AM PDT Tuesday for
PZZ350-356-370-376.The office that day
Everything else NWS Medford, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 13, 3:14 AM PDT | Small Craft Advisory | MFR | 53 hr | |
| Sep 13, 1:52 PM PDT | Fire Weather Watch | MFR | Harney, Klamath, Lake | 23 hr |
Nearby
Red Flag Warnings in Oregon, 2020Red Flag Warnings in California, 2020Every red flag warning in 2020
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.