Alert archive / Oregon / Red Flag Warnings in 2021

Red Flag Warning 5, NWS Medford, OR

June 6, 2021Harney County, Lake County, Oregon; Modoc County, California

NWS Medford, OR issued this red flag warning at Jun 6, 2021, 1:30 PM PDT for Harney County, Lake County, Oregon; Modoc County, California. It took effect at Jun 7, 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
Jun 6, 2021, 1:30 PM PDT (20:30 UTC)
In effect from
Jun 7, 2021, 2:00 PM PDT
Expired
Jun 7, 2021, 8:00 PM PDT
In force
6 hr
Issued by
NWS Medford, OR

Counties Modoc County, CA, Harney County, OR, Lake County, OR

The radar

The Medford radar (KMAX), 226 km from the middle of the area, began a volume at 20:31 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, 8.5 hours before the alert went out and 228 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.

Skew-T log-pSkew-T log-p diagram, Medford/Jackson, OR at 12:00Z on 2021-06-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Medford/Jackson, OR at 12:00Z on 2021-06-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -25 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1016 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
-25 m²/s²
0-3 km storm-relative helicity
5 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

712 
WWUS86 KMFR 062030
RFWMFR

URGENT - FIRE WEATHER MESSAGE
National Weather Service Medford OR
130 PM PDT Sun Jun 6 2021

...Gusty Wind with Low Relative Humidity Today and Again Monday
Afternoon...

.West to northwest winds will be strong and gusty this afternoon
and evening behind a dry cold front. With high fire danger and low
relative humidity, this will lead to the potential for rapid
spread of any new or existing fires. Similar conditions are
expected again for portions of the area on Monday.

CAZ285-ORZ625-070400-
/O.UPG.KMFR.FW.A.0004.210607T2100Z-210608T0300Z/
/O.NEW.KMFR.FW.W.0005.210607T2100Z-210608T0300Z/
/O.CON.KMFR.FW.W.0004.000000T0000Z-210607T0400Z/
Modoc County Except for the Surprise Valley-
South Central Oregon Desert including the BLM Land in Eastern Lake
and Western Harney Counties-
130 PM PDT Sun Jun 6 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING
FOR GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 285 AND 625... 
...RED FLAG WARNING IN EFFECT FROM 2 PM TO 8 PM PDT MONDAY FOR 
GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 285 AND 625...

The National Weather Service in Medford has upgraded the Fire
Weather Watch to a Red Flag Warning...which is in effect from 2 PM
to 8 PM PDT Monday.

* Impacts: Gusty wind with low relative humidity and high fire 
  danger will likely contribute to a significant spread of new and 
  existing fires.

* Red Flag Warning and Fire Weather Watch Affected Areas in
  Northern CA...Southeastern Fire Weather Zone 285. This includes 
  the Modoc National Forest, Clear Lake Wildlife Refuge, The Warner
  Mountains, and the communities of New Pine Creek, Newell, Davis 
  Creek, Adin and Alturas.

* Red Flag Warning Affected Areas in Southern OR...In South Central
  OR...Fire Weather Zone 625. This includes portions of the
  Fremont-Winema National Forest and the communities of Adel,
  Paisley, and Alkali Lake.

* Winds: West to northwest 15 to 25 mph with gusts 30 to 40 mph
  this afternoon and evening with similar conditions expected 
  again Monday afternoon.

* Minimum Relative Humidity: 10 to 15 percent today with similar
  conditions expected again Monday afternoon.

* View the hazard area in detail at: https://go.usa.gov/x6jc7

Precautionary/preparedness actions...

Avoid tossing burning cigarettes on the ground, parking hot
vehicles on dry vegetation, and using equipment that can cause
sparks. Follow all fire restrictions. Find links to restrictions
at weather.gov/medford/wildfire. One less spark, one less
wildfire.

Gather your fire evacuation kit now. Collect essentials you don't
want to lose and prioritize your checklist. Visit ready.gov/kit
for more information.

Familiarize yourself with your evacuation plan. Where will you go?
How will you get there? Who will you call to let others know your
are safe? Visit ready.gov/wildfires for more information.

A Red Flag Warning does not mean there is a fire. It means that
critical fire weather conditions are either occurring now or will
shortly. These conditions promote rapid spread of fire which may
become life threatening. Evacuate if ordered to, or if a fire
threatens.

&&

$$

ORZ624-070400-
/O.CON.KMFR.FW.W.0004.000000T0000Z-210607T0400Z/
Klamath Basin and the Fremont-Winema National Forest-
130 PM PDT Sun Jun 6 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING
FOR GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 624...

* Impacts: Gusty wind with low relative humidity and high fire 
  danger will likely contribute to a significant spread of new and 
  existing fires.

* Affected Areas in Southern OR...In South Central OR...Extreme
  Southeastern Fire Weather Zone 624, including the communities of
  Valley Falls and Lakeview.

* Winds: West to northwest 15 to 25 mph with gusts 30 to 40 mph
  this afternoon and evening.

* Minimum Relative Humidity: 12 to 15 percent this afternoon and
  evening.

* View the hazard area in detail at: https://go.usa.gov/x6jc7

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.

$$

BPN

Visit us at www.weather.gov/Medford
3 follow-up statements
482 
WWUS86 KMFR 070342
RFWMFR

URGENT - FIRE WEATHER MESSAGE
National Weather Service Medford OR
842 PM PDT Sun Jun 6 2021

...Gusty Wind with Low Relative Humidity Again Monday Afternoon...

CAZ285-ORZ625-072200-
/O.EXP.KMFR.FW.W.0004.000000T0000Z-210607T0400Z/
/O.CON.KMFR.FW.W.0005.210607T2100Z-210608T0300Z/
Modoc County Except for the Surprise Valley-
South Central Oregon Desert including the BLM Land in Eastern Lake
and Western Harney Counties-
842 PM PDT Sun Jun 6 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM TO 8 PM PDT MONDAY
FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 285 AND
625...
...RED FLAG WARNING WILL EXPIRE AT 9 PM PDT THIS EVENING FOR
STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 285 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 Areas in Northern CA...Southeastern Fire Weather Zone 
  285. This includes the Modoc National Forest, Clear Lake Wildlife
  Refuge, The Warner Mountains, and the communities of New Pine 
  Creek, Newell, Davis Creek, Adin and Alturas.

* Affected Areas in Southern OR...In South Central 
  OR...Southeastern Fire Weather Zone 625. This includes the 
  community of Adel. 

* Winds: West to northwest 15 to 25 mph with gusts 30 to 40 mph
  Monday afternoon.

* Minimum Relative Humidity: 14 percent.

* View the hazard area in detail at: https://go.usa.gov/x6jc7

Precautionary/preparedness actions...

Avoid tossing burning cigarettes on the ground, parking hot
vehicles on dry vegetation, and using equipment that can cause
sparks. Follow all fire restrictions. Find links to restrictions
at weather.gov/medford/wildfire. One less spark, one less
wildfire.

Gather your fire evacuation kit now. Collect essentials you don't
want to lose and prioritize your checklist. Visit ready.gov/kit
for more information.

Familiarize yourself with your evacuation plan. Where will you go?
How will you get there? Who will you call to let others know your
are safe? Visit ready.gov/wildfires for more information.

A Red Flag Warning does not mean there is a fire. It means that
critical fire weather conditions are either occurring now or will
shortly. These conditions promote rapid spread of fire which may
become life threatening. Evacuate if ordered to, or if a fire
threatens.

&&

$$

ORZ624-070445-
/O.EXP.KMFR.FW.W.0004.000000T0000Z-210607T0400Z/
Klamath Basin and the Fremont-Winema National Forest-
842 PM PDT Sun Jun 6 2021

...RED FLAG WARNING WILL EXPIRE AT 9 PM PDT THIS EVENING FOR
STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONE 624...

Winds are diminishing and humidity is increasing.

$$


Visit us at www.weather.gov/Medford
339 
WWUS86 KMFR 071014
RFWMFR

URGENT - FIRE WEATHER MESSAGE
National Weather Service Medford OR
314 AM PDT Mon Jun 7 2021

...Gusty Wind with Low Relative Humidity Again Monday Afternoon...

CAZ285-ORZ625-080300-
/O.CON.KMFR.FW.W.0005.210607T2100Z-210608T0300Z/
Modoc County Except for the Surprise Valley-
South Central Oregon Desert including the BLM Land in Eastern Lake
and Western Harney Counties-
314 AM PDT Mon Jun 7 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO
8 PM PDT THIS EVENING FOR STRONG GUSTY WIND WITH LOW RH FOR FIRE
WEATHER ZONES 285 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 Areas in Northern CA...Southeastern Fire Weather Zone
  285. This includes the Modoc National Forest, Clear Lake Wildlife
  Refuge, The Warner Mountains, and the communities of New Pine 
  Creek, Newell, Davis Creek, Adin and Alturas.

* Affected Areas in Southern OR...In South Central OR...
  Southeastern Fire Weather Zone 625. This includes the community
  of Adel.

* Winds: West to northwest 15 to 25 mph with gusts 30 to 40 mph. 

* Minimum Relative Humidity: 14 percent.

* View the hazard area in detail at: https://go.usa.gov/x6jc7

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
564 
WWUS86 KMFR 080302
RFWMFR

URGENT - FIRE WEATHER MESSAGE
National Weather Service Medford OR
802 PM PDT Mon Jun 7 2021

CAZ285-ORZ625-080415-
/O.EXP.KMFR.FW.W.0005.000000T0000Z-210608T0300Z/
Modoc County Except for the Surprise Valley-
South Central Oregon Desert including the BLM Land in Eastern Lake
and Western Harney Counties-
802 PM PDT Mon Jun 7 2021

...RED FLAG WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING FOR
STRONG GUSTY WIND WITH LOW RH FOR FIRE WEATHER ZONES 285 AND 625...

Winds are diminishing and humidity is increasing. 

$$


Visit us at www.weather.gov/Medford

The office that day

Everything else NWS Medford, OR issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 5, 5:51 PM PDTDust Storm AdvisoryMFRLake84 min
Jun 6, 1:13 PM PDTFreeze WarningMFRKlamath, Lake19 hr

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.