Alert archive / Oregon / Red Flag Warnings in 2021
Red Flag Warning 50, NWS Medford, OR
NWS Medford, OR issued this red flag warning at Sep 12, 2021, 1:56 PM PDT for Curry County, Jackson County, Josephine County, Oregon; Siskiyou County, California. It took effect at Sep 13, 2021, 1:00 PM PDT. It was in force for 18 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 12, 2021, 1:56 PM PDT (20:56 UTC)
- In effect from
- Sep 13, 2021, 1:00 PM PDT
- Expired
- Sep 14, 2021, 6:43 AM PDT
- In force
- 18 hr
- Issued by
- NWS Medford, OR
Counties Siskiyou County, CA, Curry County, OR, Jackson County, OR, Josephine County, OR
The radar
The Medford radar (KMAX), 47 km from the middle of the area, began a volume at 21:00 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 42 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
- 1708 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- 40 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
416 WWUS86 KMFR 122056 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 156 PM PDT Sun Sep 12 2021 ...STRONG NORTHEAST WINDS WITH LOW HUMIDITY MONDAY... .A thermal trough will deepen along the coast of extreme southern Oregon tomorrow. This will result in gusty northeast winds, that will combine with very low humidity in the Illinois Valley, and south and southeast into portions of western Siskiyou county Monday afternoon into the evening. CAZ280-ORZ620-621-131200- /O.UPG.KMFR.FW.A.0038.210913T2000Z-210914T0600Z/ /O.NEW.KMFR.FW.W.0050.210913T2000Z-210914T0600Z/ Western Klamath National Forest- Western Rogue Basin including the Illinois Valley- Siskiyou Mountains- 156 PM PDT Sun Sep 12 2021 ...RED FLAG WARNING IN EFFECT FROM 1 PM TO 11 PM PDT MONDAY FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 280...620 AND 621... The National Weather Service in Medford has issued a Red Flag Warning...which is in effect from 1 PM to 11 PM PDT Monday. The Fire Weather Watch is no longer in effect. * Impacts: Strong, gusty wind with low relative humidity and critically dry vegetation will greatly increase the spread potential of any new and existing fires. * Affected area: In Northern CA Fire Zone....280. In Southwest OR Fire Zones...620...621. * Wind: North 10 to 15 mph with gusts up to 25 mph. * Humidity: As low as 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. Gather your fire evacuation kit now. Collect essentials you don't want to lose and prioritize your checklist. Visit ready.gov/kit for more information. Familiarize yourself with your evacuation plan. Where will you go? How will you get there? Who will you call to let others know your are safe? Visit ready.gov/wildfires for more information. A Red Flag Warning does not mean there is a fire. It means that critical fire weather conditions are either occurring now or will shortly. These conditions promote rapid spread of fire which may become life threatening. Evacuate if ordered to, or if a fire threatens. && $$ Visit us at www.weather.gov/Medford
4 follow-up statements
364
WWUS86 KMFR 131150
RFWMFR
URGENT - FIRE WEATHER MESSAGE
National Weather Service Medford OR
450 AM PDT Mon Sep 13 2021
...STRONG NORTHEAST WINDS WITH LOW HUMIDITY TODAY...
.A thermal trough will deepen along the coast of extreme southern
Oregon today. This will result in gusty northeast winds, that
will combine with very low humidity in the Illinois Valley, and
south and southeast into portions of western Siskiyou county
this afternoon into the evening.
CAZ280-ORZ620-621-140600-
/O.CON.KMFR.FW.W.0050.210913T2000Z-210914T0600Z/
Western Klamath National Forest-
Western Rogue Basin including the Illinois Valley-
Siskiyou Mountains-
450 AM PDT Mon Sep 13 2021
...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO
11 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE
WEATHER ZONES 280...620 AND 621...
* 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 Zone....280 including the McCash wildfire.
In Southwest OR Fire Zones...southern 620...621 including the
Southern Illinois Valley.
* Wind: North to northeast 10 to 15 mph with gusts up to 25 mph.
* Humidity: As low as 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.
Gather your fire evacuation kit now. Collect essentials you don't
want to lose and prioritize your checklist. Visit ready.gov/kit
for more information.
Familiarize yourself with your evacuation plan. Where will you go?
How will you get there? Who will you call to let others know your
are safe? Visit ready.gov/wildfires for more information.
A Red Flag Warning does not mean there is a fire. It means that
critical fire weather conditions are either occurring now or will
shortly. These conditions promote rapid spread of fire which may
become life threatening. Evacuate if ordered to, or if a fire
threatens.
$$
Visit us at www.weather.gov/Medford340 WWUS86 KMFR 132037 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 137 PM PDT Mon Sep 13 2021 CAZ280-140945- /O.EXT.KMFR.FW.W.0050.000000T0000Z-210914T1600Z/ Western Klamath National Forest- 137 PM PDT Mon Sep 13 2021 ...RED FLAG WARNING NOW IN EFFECT UNTIL 9 AM PDT TUESDAY FOR EAST WIND WITH POOR OVERNIGHT RH RECOVERY TONIGHT ABOVE 2500 FT MSL AND STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 280 THROUGH THIS EVENING... * Impacts: East winds, poor relative humidity recovery, and critically dry vegetation will likely contribute to a significant spread of new and existing fires and 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 Weather Zone 280 including the McCash wildfire. * Wind: Northeast 10 to 15 mph with gusts up to 25 mph. * Humidity: As low as 12 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ ORZ620-621-140600- /O.CON.KMFR.FW.W.0050.000000T0000Z-210914T0600Z/ Western Rogue Basin including the Illinois Valley- Siskiyou Mountains- 137 PM PDT Mon Sep 13 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 620 AND 621... * Impacts: East winds, poor relative humidity recovery, and critically dry vegetation will likely contribute to a significant spread of new and existing fires and Strong, gusty wind with low relative humidity and critically dry vegetation will greatly increase the spread potential of any new and existing fires. * Affected area: In Southwest OR...Fire Weather Zones 620 and 621 including the Southern Illinois Valley. * Wind: North 10 to 15 mph with gusts up to 25 mph. * Humidity: As low as 12 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ Visit us at www.weather.gov/Medford
135 WWUS86 KMFR 140543 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 1043 PM PDT Mon Sep 13 2021 ORZ620-621-140645- /O.EXP.KMFR.FW.W.0050.000000T0000Z-210914T0600Z/ Western Rogue Basin including the Illinois Valley- Siskiyou Mountains- 1043 PM PDT Mon Sep 13 2021 ...RED FLAG WARNING WILL EXPIRE AT 11 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 620 AND 621... Winds will remain breezy to gusty through the night but RHs have begun to recover and are above critical thresholds. $$ CAZ280-141600- /O.CON.KMFR.FW.W.0050.000000T0000Z-210914T1600Z/ Western Klamath National Forest- 1043 PM PDT Mon Sep 13 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 AM PDT TUESDAY FOR EAST WIND WITH POOR OVERNIGHT RH RECOVERY FOR FIRE WEATHER ZONE 280... * Impacts: East winds, poor relative humidity recovery, and critically dry vegetation will likely contribute to a significant spread of new and existing fires. * Affected area: In Northern CA...Fire Weather Zone 280. * Wind: Northeast 10 to 15 mph with gusts up to 25 mph. * Humidity: As low as 12 percent. * View the hazard area in detail at: https://www.wrh.noaa.gov/mfr/HAZARD $$ Visit us at www.weather.gov/Medford
968 WWUS86 KMFR 141343 RFWMFR URGENT - FIRE WEATHER MESSAGE National Weather Service Medford OR 643 AM PDT Tue Sep 14 2021 CAZ280-141445- /O.CAN.KMFR.FW.W.0050.000000T0000Z-210914T1600Z/ Western Klamath National Forest- 643 AM PDT Tue Sep 14 2021 ...RED FLAG WARNING IS CANCELLED FOR EAST WIND WITH POOR OVERNIGHT RH RECOVERY FOR FIRE WEATHER ZONE 280... The National Weather Service in Medford has cancelled the Red Flag Warning. Although winds remain gusty in some locations, humidities have risen, and no longer meet critical values. $$ 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 |
|---|---|---|---|---|
| Sep 12, 2:09 AM PDT | Gale Watch | MFR | 12 hr | |
| Sep 12, 10:42 AM PDT | Fire Weather Watch | MFR | Curry, Jackson, Josephine | 3 hr |
| Sep 12, 1:59 PM PDT | Gale Warning | MFR | 33 hr | |
| Sep 12, 1:59 PM PDT | Hazardous Seas Warning | MFR | 3 days |
Nearby
Red Flag Warnings in Oregon, 2021Red Flag Warnings in California, 2021Every red flag warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.