Alert archive / Oregon / Red Flag Warnings in 2017

Red Flag Warning 43, NWS Medford, OR

September 1, 20175 counties in Oregon

NWS Medford, OR issued this red flag warning at Sep 1, 2017, 4:29 AM PDT for 5 counties in Oregon. It took effect at Sep 2, 2017, 1:00 PM PDT. It was in force for 7 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 1, 2017, 4:29 AM PDT (11:29 UTC)
In effect from
Sep 2, 2017, 1:00 PM PDT
Expired
Sep 2, 2017, 8:00 PM PDT
In force
7 hr
Issued by
NWS Medford, OR

Counties Douglas County, OR, Jackson County, OR, Klamath County, OR, Lake County, OR, Lane County, OR

The radar

The Medford radar (KMAX), 115 km from the middle of the area, began a volume at 11:26 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 90 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 00:00Z on 2017-09-01Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Medford/Jackson, OR at 00:00Z on 2017-09-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.1939Sfc1 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
3287 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
-3 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

042 
WWUS86 KMFR 011129
RFWMFR

URGENT - FIRE WEATHER MESSAGE
National Weather Service Medford OR
429 AM PDT Fri Sep 1 2017

ORZ617-623-012330-
/O.UPG.KMFR.FW.A.0034.170902T2000Z-170903T0300Z/
/O.NEW.KMFR.FW.W.0043.170902T2000Z-170903T0300Z/
/O.CON.KMFR.FW.W.0040.000000T0000Z-170901T1600Z/
Umpqua National Forest-Southern Oregon Cascades-
429 AM PDT Fri Sep 1 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING
FOR COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITIES
FOR FIRE WEATHER ZONES 617 AND 623...
...RED FLAG WARNING IN EFFECT FROM 1 PM TO 8 PM PDT SATURDAY FOR 
VERY DRY AND UNSTABLE HAINES 6 FOR FIRE WEATHER ZONES 617 AND 
623...

The National Weather Service in Medford has issued a Red Flag
Warning, which is in effect from 1 PM to 8 PM PDT Saturday. The
Fire Weather Watch has been upgraded. 

* Affected area...This morning...fire weather zone 623 and the
  eastern portion of zone 617. Saturday...Most of fire weather zones
  617 and 623 to include the North Pelican Butte, High Cascades 
  Complex, and North Umpqua Complex wildfires. 

* Wind...This morning...east 10 mph with gusts to 20 mph.

* Humidity...This morning...20 to 30 percent. Saturday
  afternoon...12 to 25 percent. 

* Haines...6 Saturday afternoon.

* Impacts...This morning...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. 
  Saturday afternoon...very dry and unstable conditions could lead
  to plume-dominated fire activity and rapid fire spread.

* 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.

&&

$$

ORZ624-012330-
/O.UPG.KMFR.FW.A.0034.170902T2000Z-170903T0300Z/
/O.NEW.KMFR.FW.W.0043.170902T2000Z-170903T0300Z/
Klamath Basin and the Fremont-Winema National Forest-
429 AM PDT Fri Sep 1 2017

...RED FLAG WARNING IN EFFECT FROM 1 PM TO 8 PM PDT SATURDAY FOR
VERY DRY AND UNSTABLE HAINES 6 FOR FIRE WEATHER ZONE 624...

The National Weather Service in Medford has issued a Red Flag
Warning, which is in effect from 1 PM to 8 PM PDT Saturday. The
Fire Weather Watch has been upgraded. 

* Affected area: Fire weather zone 624 to include the Jade Creek
  and Naylox wildfires.

* Humidity...10 to 15 percent.

* Haines...6 Saturday afternoon.

* Impacts...Very dry and unstable conditions could lead to 
  plume-dominated fire activity and rapid fire spread. 

* 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.

&&

$$

ORZ621-012330-
/O.CON.KMFR.FW.W.0040.000000T0000Z-170901T1600Z/
/O.CON.KMFR.FW.W.0042.170901T2000Z-170902T0300Z/
Siskiyou Mountains-
429 AM PDT Fri Sep 1 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING
FOR COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITIES
FOR ELEVATIONS ABOVE 4000 FEET IN FIRE WEATHER ZONE 621...
...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO
8 PM PDT THIS EVENING FOR VERY DRY AND UNSTABLE HAINES 6 FOR FIRE
WEATHER ZONE 621...

* Affected area...This morning...elevations above 4000 feet in
  fire weather zone 621. This afternoon...areas west of Mount
  Ashland in fire weather zone 621.

* Wind...Tonight...East 10 mph with gusts to 20 mph.

* Humidity...This morning...20 to 30 percent. This afternoon.... 
  around 15 percent. 

* Haines...6 this afternoon.

* Impacts...This morning...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. This 
  afternoon...very dry and unstable conditions could lead to 
  plume-dominated fire activity and rapid fire spread.

* 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>620-012330-
/O.CON.KMFR.FW.W.0040.000000T0000Z-170901T1600Z/
/O.CON.KMFR.FW.W.0042.170901T2000Z-170902T0300Z/
Southern Oregon Coast-Western Rogue River-
Siskiyou National Forest-
Western Rogue Basin including the Illinois Valley-
429 AM PDT Fri Sep 1 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING
FOR COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITIES FOR 
FIRE WEATHER ZONES 618...619 AND 620 TO INCLUDE THE CHETCO BAR
FIRE...
...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO
8 PM PDT THIS EVENING FOR VERY DRY AND UNSTABLE HAINES 6 FOR FIRE
WEATHER ZONES 618...619 AND 620 TO INCLUDE THE CHETCO BAR FIRE...

* Affected area...This morning...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. This
  afternoon...Most of Fire Weather Zones 618...619...and 620 to
  include the Chetco Bar Fire.

* Wind...This morning...Northeast to East 10 to 20 mph with gusts
  to 35 mph. Wind speeds will diminish to around 10 mph this 
  afternoon.

* Humidity...Recoveries of 25 to 35 percent this
  morning...lowering to 10 to 20 percent this afternoon.

* Haines...6 this afternoon.

* Impacts...This morning...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. This
  afternoon...very dry and unstable conditions could lead to 
  plume-dominated fire activity and rapid fire spread.

* 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 hot temperatures followed
by very dry and unstable conditions, will create extreme fire
growth potential.

&&

$$

CAZ280-011600-
/O.CON.KMFR.FW.W.0040.000000T0000Z-170901T1600Z/
Western Klamath National Forest-
429 AM PDT Fri Sep 1 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING
FOR COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITIES
FOR UPPER SLOPES AND RIDGES OF FIRE WEATHER ZONE 280...

* Affected area...Upper slopes and ridges of 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 east 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.

&&

$$

ORZ616-012330-
/O.CON.KMFR.FW.W.0042.170901T2000Z-170902T0300Z/
Umpqua Basin-
429 AM PDT Fri Sep 1 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO
8 PM PDT THIS EVENING FOR VERY DRY AND UNSTABLE HAINES 6 FOR FIRE
WEATHER ZONE 616 TO INCLUDE THE HORSE PRAIRIE FIRE...

* Affected area: Southern fire weather zone 616 to include the 
  Horse Prairie Fire.

* Humidity...Around 15 percent.

* Haines...6.

* Impacts...Very dry and unstable conditions could lead to 
  plume-dominated fire activity and rapid fire spread. 

* 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. Very dry and unstable
conditions will create extreme fire growth potential.

&&

$$
DW

Visit us at www.weather.gov/medford
6 follow-up statements
328 
WWUS86 KMFR 011607
RFWMFR

URGENT - FIRE WEATHER MESSAGE
National Weather Service Medford OR
907 AM PDT Fri Sep 1 2017


ORZ621-020300-
/O.EXP.KMFR.FW.W.0040.000000T0000Z-170901T1600Z/
/O.CON.KMFR.FW.W.0042.170901T2000Z-170902T0300Z/
Siskiyou Mountains-
907 AM PDT Fri Sep 1 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO
8 PM PDT THIS EVENING FOR VERY DRY AND UNSTABLE HAINES 6 FOR FIRE
WEATHER ZONE 621...
...RED FLAG WARNING WILL EXPIRE AT 9 AM PDT THIS MORNING FOR
COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITIES FOR
ELEVATIONS ABOVE 4000 FEET IN FIRE WEATHER ZONE 621...

* Affected area...Fire zone 621 including the Miller Complex. 

* Haines...6 this afternoon.

* Impacts...Gusty northeast winds are expected to diminish this 
  morning. This afternoon...very dry and unstable conditions could 
  lead to plume- dominated fire activity and rapid fire spread.

* 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>620-020300-
/O.EXP.KMFR.FW.W.0040.000000T0000Z-170901T1600Z/
/O.CON.KMFR.FW.W.0042.170901T2000Z-170902T0300Z/
Southern Oregon Coast-Western Rogue River-Siskiyou National Forest-
Western Rogue Basin including the Illinois Valley-
907 AM PDT Fri Sep 1 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO
8 PM PDT THIS EVENING FOR VERY DRY AND UNSTABLE HAINES 6 FOR FIRE
WEATHER ZONES 618...619 AND 620 TO INCLUDE THE CHETCO BAR FIRE...
...RED FLAG WARNING WILL EXPIRE AT 9 AM PDT THIS MORNING FOR
COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITIES FOR FIRE
WEATHER ZONES 618...619 AND 620 TO INCLUDE THE CHETCO BAR FIRE...

* Affected area...Most of Fire Weather Zones 618...619...and 620 
  to include the Chetco Bar Fire.

* Wind...This morning...Northeast to East 10 to 20 mph. Wind 
  speeds will diminish to around 10 mph this afternoon.

* Humidity...Lowering to 10 to 20 percent this afternoon.

* Haines...6 this afternoon.

* Impacts...This morning...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. This
afternoon...very dry and unstable conditions could lead to plume-
dominated fire activity and rapid fire spread.

* 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 hot temperatures followed
by very dry and unstable conditions, will create extreme fire
growth potential.

&&

$$

ORZ617-623-020300-
/O.EXP.KMFR.FW.W.0040.000000T0000Z-170901T1600Z/
/O.CON.KMFR.FW.W.0043.170902T2000Z-170903T0300Z/
Umpqua National Forest-Southern Oregon Cascades-
907 AM PDT Fri Sep 1 2017

...RED FLAG WARNING IN EFFECT FROM 1 PM TO 8 PM PDT SATURDAY FOR 
VERY DRY AND UNSTABLE HAINES 6 FOR FIRE WEATHER ZONES 617 AND 
623...
...RED FLAG WARNING WILL EXPIRE AT 9 AM PDT THIS MORNING FOR
COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITIES FOR FIRE
WEATHER ZONES 617 AND 623...

* Affected area...Most of fire weather zones 617 and 623 to 
  include the North Pelican Butte, High Cascades Complex, and North
  Umpqua Complex wildfires.

* Wind...This morning...east 10 mph with gusts to 20 mph.

* Humidity...This morning...20 to 30 percent. Saturday afternoon...
 12 to 25 percent.

* Haines...6 Saturday afternoon.

* Impacts...This morning...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.
Saturday afternoon...very dry and unstable conditions could lead
to plume-dominated fire activity and rapid fire spread.

* 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.

&&

$$

CAZ280-011715-
/O.EXP.KMFR.FW.W.0040.000000T0000Z-170901T1600Z/
Western Klamath National Forest-
907 AM PDT Fri Sep 1 2017

...RED FLAG WARNING WILL EXPIRE AT 9 AM PDT THIS MORNING FOR
COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITIES FOR UPPER
SLOPES AND RIDGES OF FIRE WEATHER ZONE 280...

Moderate northeast winds will diminish this morning. 

$$

ORZ616-020300-
/O.CON.KMFR.FW.W.0042.170901T2000Z-170902T0300Z/
Umpqua Basin-
907 AM PDT Fri Sep 1 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO
8 PM PDT THIS EVENING FOR VERY DRY AND UNSTABLE HAINES 6 FOR FIRE
WEATHER ZONE 616 TO INCLUDE THE HORSE PRAIRIE FIRE...

* Affected area: Southern fire weather zone 616 to include the 
  Horse Prairie Fire.

* Humidity...Around 15 percent.

* Haines...6.

* Impacts...Very dry and unstable conditions could lead to plume-
dominated fire activity and rapid fire spread.

* View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr


$$

ORZ624-020300-
/O.CON.KMFR.FW.W.0043.170902T2000Z-170903T0300Z/
Klamath Basin and the Fremont-Winema National Forest-
907 AM PDT Fri Sep 1 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM TO 8 PM PDT
SATURDAY FOR VERY DRY AND UNSTABLE HAINES 6 FOR FIRE WEATHER ZONE
624...

* Affected area: Fire weather zone 624 to include the Jade Creek
  and Naylox wildfires.

* Humidity...10 to 15 percent.

* Haines...6 Saturday afternoon.

* Impacts...Very dry and unstable conditions could lead to plume-
dominated fire activity and rapid fire spread.

* View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr


$$


Visit us at www.weather.gov/Medford
926 
WWUS86 KMFR 012058
RFWMFR

URGENT - FIRE WEATHER MESSAGE
National Weather Service Medford OR
158 PM PDT Fri Sep 1 2017

ORZ616-618>621-020300-
/O.CON.KMFR.FW.W.0042.000000T0000Z-170902T0300Z/
Umpqua Basin-Southern Oregon Coast-Western Rogue River-
Siskiyou National Forest-
Western Rogue Basin including the Illinois Valley-
Siskiyou Mountains-
158 PM PDT Fri Sep 1 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING
FOR VERY DRY AND UNSTABLE HAINES 6 FOR FIRE WEATHER ZONE
621...SOUTHERN 616...618...619...AND 620 TO INCLUDE THE CHETCO BAR
FIRE...HORSE PRAIRIE FIRE...AND MILLER COMPLEX...

* Affected area...Most of Fire Weather Zones 618...619...621...620
  and southern 616 to include the Chetco Bar Fire, Horse Prairie 
  Fire and Miller Complex.

* Haines...6 this afternoon.

* Humidity...10 to 15 percent.

* Impacts...Very dry and unstable conditions could lead to plume- 
  dominated fire activity and rapid fire spread.

* 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. Very dry and unstable 
conditions will create extreme fire growth potential.

$$

ORZ617-623-624-021300-
/O.CON.KMFR.FW.W.0043.170902T2000Z-170903T0300Z/
Umpqua National Forest-Southern Oregon Cascades-
Klamath Basin and the Fremont-Winema National Forest-
158 PM PDT Fri Sep 1 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM TO 8 PM PDT
SATURDAY FOR VERY DRY AND UNSTABLE HAINES 6 FOR FIRE WEATHER ZONES
617...623..624 TO INCLUDE THE NORTH PELICAN BUTTE...HIGH CASCADES 
COMPLEX...NORTH UMPQUA COMPLEX...RATTLESNAKE...NAYLOX...AND JADE 
CREEK WILDFIRES...

* Affected area: Most of fire weather zones 617, 623, and 624 to
  include the North Pelican Butte, High Cascades Complex, North
  Umpqua Complex, Naylox, Rattlesnake, and Jade Creek wildfires.

* Humidity...10 to 17 percent Saturday afternoon.

* Haines...6 Saturday afternoon.

* Impacts...Very dry and unstable conditions could lead to plume-
dominated fire activity and rapid fire spread.

* 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. Very dry and unstable 
conditions will create extreme fire growth potential.

$$


Visit us at www.weather.gov/Medford
530 
WWUS86 KMFR 020300
RFWMFR

URGENT - FIRE WEATHER MESSAGE
National Weather Service Medford OR
800 PM PDT Fri Sep 1 2017

ORZ616-618>621-020400-
/O.EXP.KMFR.FW.W.0042.000000T0000Z-170902T0300Z/
Umpqua Basin-Southern Oregon Coast-Western Rogue River-
Siskiyou National Forest-
Western Rogue Basin including the Illinois Valley-
Siskiyou Mountains-
800 PM PDT Fri Sep 1 2017

...RED FLAG WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING FOR
HAINES 6 WITH EXISTING FIRE FOR FIRE WEATHER ZONES 616...618...
619...620 AND 621...

The area of high HAINES will move east of the area on Saturday.

$$

ORZ617-623-624-021500-
/O.CON.KMFR.FW.W.0043.170902T2000Z-170903T0300Z/
Umpqua National Forest-Southern Oregon Cascades-
Klamath Basin and the Fremont-Winema National Forest-
800 PM PDT Fri Sep 1 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM TO 8 PM PDT
SATURDAY FOR HAINES 6 WITH EXISTING FIRE FOR FIRE WEATHER ZONES
617...623 AND 624...

* Affected area: 
  In South Central OR Fire Zone....624.
  In Southwest OR Fire Zones...617...623.

* Humidity...10 to 17 percent Saturday afternoon.

* Haines...6 Saturday afternoon.

* Impacts...Very dry and unstable conditions could lead to plume-
dominated fire activity and rapid fire spread.

* View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr

* View the hazard area in detail at
  http://www.wrh.noaa.gov/map/?wfo=mfr

$$


Visit us at www.weather.gov/Medford
658 
WWUS86 KMFR 021011
RFWMFR

URGENT - FIRE WEATHER MESSAGE
National Weather Service Medford OR
311 AM PDT Sat Sep 2 2017

ORZ617-623-624-022300-
/O.CON.KMFR.FW.W.0043.170902T2000Z-170903T0300Z/
Umpqua National Forest-Southern Oregon Cascades-
Klamath Basin and the Fremont-Winema National Forest-
311 AM PDT Sat Sep 2 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO
8 PM PDT THIS EVENING FOR HAINES 6 WITH EXISTING FIRES FOR FIRE 
WEATHER ZONES 617...623 AND 624...

* Affected area: In South Central OR Fire Zone....624. In 
  Southwest OR Fire Zones...617...623.

* Humidity...10 to 18 percent this afternoon and evening.

* Haines...6 this afternoon and evening.

* Impacts...Very dry and unstable conditions could lead to 
  plume-dominated fire activity and rapid fire spread.

* View the hazard area in detail at
  https://www.wrh.noaa.gov/map/?wfo=mfr

$$


Visit us at www.weather.gov/medford
824 
WWUS86 KMFR 022100
RFWMFR

URGENT - FIRE WEATHER MESSAGE
National Weather Service Medford OR
200 PM PDT Sat Sep 2 2017


ORZ617-623-624-030300-
/O.CON.KMFR.FW.W.0043.000000T0000Z-170903T0300Z/
Umpqua National Forest-Southern Oregon Cascades-
Klamath Basin and the Fremont-Winema National Forest-
200 PM PDT Sat Sep 2 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING 
FOR HAINES 6 WITH EXISTING FIRES FOR FIRE WEATHER ZONES 617...623 
AND 624...

* Affected area: 
  In South Central OR Fire Zone....624. In Southwest OR Fire 
  Zones...617...623.

* Humidity: 
  10 to 18 percent this afternoon and evening.

* Haines: 
  6 this afternoon and evening.

* Impacts...Very dry and unstable conditions could lead to plume-
  dominated fire activity and rapid fire spread.

* View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr


$$

ORZ618-619-030900-
/O.NEW.KMFR.FW.A.0035.170904T0300Z-170904T1600Z/
Southern Oregon Coast-Western Rogue River-Siskiyou National Forest-
200 PM PDT Sat Sep 2 2017

...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY
MORNING FOR A COMBINATION OF STRONG WINDS AND LOW RELATIVE
HUMIDITIES FOR FIRE WEATHER ZONES 618 AND 619 INCLUDING THE CHETCO
BAR FIRE...

The National Weather Service in Medford has issued a Fire Weather
Watch...which is in effect from Sunday evening through Monday
morning.

* Impacts:  
 East winds, poor relative humidity recovery, and high fire danger
 will likely contribute to a significant spread of new and existing
 fires.

* Affected area: 
  Inland from the beaches in southern Curry County, including the 
  Chetco Bar Fire, in fire weather zones 618 and 619. Higher terrain 
  areas will see the strongest winds and lowest humidity..

* Wind: 
  East to northeast 10 to 15 mph with gusts up to 25 mph.

* Humidity: 
  Overnight recoveries Sunday night are expected to be
  between 20 and 30 percent. 

* View the hazard area in detail at
  http://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.

&&

$$

CAZ280-030900-
/O.NEW.KMFR.FW.A.0035.170904T0300Z-170904T1600Z/
Western Klamath National Forest-
200 PM PDT Sat Sep 2 2017

...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY
MORNING FOR A COMBINATION OF STRONG WINDS AND LOW RELATIVE 
HUMIDITIES FOR UPPER SLOPES AND RIDGES OF FIRE WEATHER ZONE 280...

The National Weather Service in Medford has issued a Fire Weather
Watch...which is in effect from Sunday evening through Monday
morning.

* Impacts:  
  East winds, poor relative humidity recovery, and high
  fire danger will likely contribute to a significant spread of new
  and existing fires.

* Affected area: 
  Upper slopes and ridges of fire weather zone 280
  in Western Siskiyou County.

* Counties affected: 
  Upper slopes and ridges of fire weather zone 280
  in Western Siskiyou County.

* Wind: 
  East 10 to 15 mph with gusts to 25 mph.

* Humidity: 
  20 to 30 percent.

* View the hazard area in detail at
  http://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.

&&

$$

Petrucelli

Visit us at www.weather.gov/Medford
941 
WWUS86 KMFR 030307
RFWMFR

URGENT - FIRE WEATHER MESSAGE
National Weather Service Medford OR
807 PM PDT Sat Sep 2 2017

ORZ617-623-624-030415-
/O.EXP.KMFR.FW.W.0043.000000T0000Z-170903T0300Z/
Umpqua National Forest-Southern Oregon Cascades-
Klamath Basin and the Fremont-Winema National Forest-
807 PM PDT Sat Sep 2 2017

...RED FLAG WARNING HAS EXPIRED FOR HAINES 6 WITH EXISTING FIRES 
FOR FIRE WEATHER ZONES 617...623 AND 624...

A lower HAINES is expected Sunday.

$$

ORZ618-619-031515-
/O.CON.KMFR.FW.A.0035.170904T0300Z-170904T1600Z/
Southern Oregon Coast-Western Rogue River-Siskiyou National Forest-
807 PM PDT Sat Sep 2 2017

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY EVENING
THROUGH MONDAY MORNING A COMBINATION OF STRONG WINDS AND LOW 
RELATIVE HUMIDITIES FOR FIRE WEATHER ZONES 618 AND 619...

* Impacts: East winds, poor relative humidity recovery, and high
  fire danger will likely contribute to a significant spread of new
  and existing fires.

* Affected area: Inland from the beaches in southern Curry County,
  including the Chetco Bar Fire, in fire weather zones 618 and 619.
  Higher terrain areas will see the strongest winds and lowest
  humidity.

* Wind: northeast 10 to 15 mph with gusts up to 25 mph.

* Humidity: as low as 11 percent.

* View the hazard area in detail at
  http://www.wrh.noaa.gov/map/?wfo=mfr

$$

CAZ280-031515-
/O.CON.KMFR.FW.A.0035.170904T0300Z-170904T1600Z/
Western Klamath National Forest-
807 PM PDT Sat Sep 2 2017

...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY
MORNING FOR A COMBINATION OF STRONG WINDS AND LOW RELATIVE 
HUMIDITIES FOR UPPER SLOPES AND RIDGES OF FIRE WEATHER ZONE 280...

* Impacts:  East winds, poor relative humidity recovery, and high
  fire danger will likely contribute to a significant spread of new
  and existing fires.

* Affected area: Upper slopes and ridges of fire weather zone 280
  in Western Siskiyou County.

* Wind: north 10 to 15 mph with gusts up to 25 mph.

* Humidity: 20 to 30 percent.

* View the hazard area in detail at
  http://www.wrh.noaa.gov/map/?wfo=mfr

$$


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 1, 4:09 AM PDT, 20 minutes earlier.

Area forecast discussion, Sep 1, 4:09 AM PDT, 20 minutes before
Area Forecast Discussion
National Weather Service Medford OR
409 AM PDT Fri Sep 1 2017

.SHORT TERM...An upper level ridge will strengthen over the area
today and remain in place into early next week. The pressure
gradient associated with the surface thermal trough will weaken
today as the thermal trough builds slightly north and moves
inland. Gusty dry winds over the coastal mountains will gradually
lower late this morning. With the ridge in place expect hot and
mostly dry conditions to remain in place today into the weekend.
Temperatures are expected to soar into the 100 to 105 range today
across western valleys and in the 100 to 110 range on Saturday.
These hot temperatures in the lower to mid 100s continue over
western valleys Sunday and Monday. The heat combined with
overnight lows only lowering briefly into the mid 60s to near 70
will bring the risk for heat related illness. Also smoke from area
fires will create air quality impacts through the Labor Day
weekend. See the NPWMFR and AQAMFR for details on the excessive
heat warnings and air quality alert.

There will be a slight change in the pattern with southerly
moisture moving up into the area Sunday through Wednesday. Weak
shortwaves on Sunday combined with some increasing mid level
moisture will bring a slight risk for thunderstorms on Sunday and
Monday, mainly to the higher terrain in Northern California and
into the Cascades. However the moisture is fairly limited so may
just see mainly cumulus buildups on these days. Moisture is
expected to increase further Tuesday into Wednesday as a low
pressure center originating from near the Gulf of Mexico moves
northward off the California coast then northward on Wednesday
becoming located off the southern Oregon coast. This low will
send moisture and upper level disturbances into the area and
models show increasing chances for thunderstorms over southwest
Oregon and Northern California by Wednesday afternoon. Of note,
is that thunderstorms that develop on Wednesday are likely to
bring moderate to locally heavy rain.

Smoke from area fires will continue to bring decreased air
quality through the weekend and into next week. Expect areas of
significant smoke from the Cascades west and in portions of
Klamath county through the weekend and into early next week.

Tuesday and Wednesday temperatures will decrease slightly but high
temperatures still remain hot, in the upper 90s to near 100 in
western valleys and will be in the upper 80s to low 90s across
the east side. The combination of heat and smoke may bring
continued impacts to area residents into next week.

Then Thursday into Friday, models are trending towards showing an
upper trough moving towards the Pacific Northwest coast. There
remains uncertainty though as to whether this trough will shift
inland Friday into Saturday or remain offshore. The track of this
trough will be important in determining if temperatures decrease
further and if air quality from smoke may improve late in the
week. Confidence is low the details for this period and will need
to monitor future model runs.

&&

.AVIATION...01/00Z TAF CYCLE...Strong north winds at OTH with gust
to around 30 knots will continue until this evening but winds are
not expected to go completely calm overnight. As a result of the
offshore winds, conditions should remain VFR for most of the night
until winds decrease below 5 knots and low clouds reformed around 10-
12Z. Over the remainder of the area...IFR visibilities with the
thickest smoke will persist in southern Curry County and western
Siskiyou County. Elsewhere...areas of MVFR visibilities from
wildfire smoke will persist. There will be a gradual worsening trend
late this evening at LMT to MVFR visibility. /FB

&&

.MARINE...Updated 200 PM PDT Thursday 31 August 2017...The latest
observations at buoys 15 and 27 show breezy north winds above small
craft advisory. High pressure offshore and a thermal trough along
the coast will bring strong north winds and very steep short period
seas tonight into Saturday morning. Winds are expected to reach gale
force south of Port Orford beyond 5 nm from shore. Gales and very
steep wind driven seas are likely to peak this evening but linger
into Friday morning. The thermal trough is expected to drift
westward over the coastal waters Saturday and Sunday leading to
lighter winds and diminished seas. North Winds will briefly increase
again on Monday. Seas are expected to become swell dominated on
Wednesday for the first time in quite a while. /FB

&&

.MFR WATCHES/WARNINGS/ADVISORIES...
OR...Fire Weather Watch from Saturday afternoon through Saturday
     evening for ORZ617-623-624.
     Excessive Heat Warning from 11 AM this morning to 11 PM PDT
     Monday for ORZ021>028.
     Red Flag Warning until 9 AM PDT this morning for ORZ618>620.
     Red Flag Warning from 1 PM this afternoon to 8 PM PDT this
     evening for ORZ616-618>621.
     Red Flag Warning until 9 AM PDT this morning for ORZ617-621-623.

CA...     Excessive Heat Warning from 11 AM this morning to 11 PM PDT
     Monday for CAZ080.
     Heat Advisory from 11 AM this morning to 11 PM PDT Monday for
     CAZ081-082.
     Red Flag Warning until 9 AM PDT this morning for CAZ280.

Pacific Coastal Waters...Small Craft Advisory until 11 PM PDT this evening for
     PZZ350-356-370-376.
     Small Craft Advisory for hazardous seas until 11 AM PDT Saturday
     for PZZ350-356-370-376.
     Hazardous Seas Warning until 11 PM PDT this evening for PZZ376.

CC

Nearby

Red Flag Warnings in Oregon, 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.