SMOKE MANAGEMENT
FORECAST AND INSTRUCTIONS
SALEM FORESTRY
WEATHER CENTER
OREGON DEPARTMENT
OF FORESTRY
ISSUED: Friday,
May 29, 2026
2:30 PM Sherri Pugh
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We Need Your Feedback!
The Smoke Management
Department is planning to “upgrade” this product so that it more effectively
meets your needs. To assist us with this
project, we are requesting feedback from you!
Below are a few questions
to help you consider what changes would be most beneficial for you. All ideas are welcome!
Is the “Short-Term
Discussion” useful? What would enhance
it?
Is the “Long-term
Discussion” useful? What would enhance
it?
How could the “Dispersion”
forecast better meet your needs?
Is the “Outlook”
useful? What would enhance it?
Are the “Burning
Instructions” clear and concise? How
could they be improved for your use?
How do you access the
forecast product (i.e., Email; web page; telephone recording)?
We are considering
discontinuing or upgrading the phone recording of the forecast product. Is that something you currently use? Would you use it if you could get your
specific forecast from it faster?
Please Email your feedback
to: Peter.GJ.Parsons@odf.oregon.gov
Thank you!
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1. DISCUSSION AND FORECAST FOR NORTHEAST
FORECAST AREA ZONES 637-646
On Saturday, the
region will begin to dry out with showers coming to an end. Weak upper-level troughing will keep
temperatures near or below seasonable. Winds will come from NW.
Mixing heights will be good.
A pattern toward dry weather
continues Sunday. An upper-level ridge
will be offshore with light winds aloft.
Temperatures will be near average and mixing
heights will be high. Surface winds will
be from NW in central zones and variable in northeastern zones. Transport winds will come from NW.
EXTENDED DISCUSSION
Monday will be dry
with temperatures rising above seasonable.
Flow aloft will be from W with upper-level ridging on the coast. Winds will be variable in direction, somewhat
W for transport winds. Mixing heights
will be excellent.
Temperatures climb
well above average on Tuesday with dry conditions. Flow aloft will be from SW with upper-level
ridging. Winds will be variable in
direction though generally onshore.
Mixing heights will rise high.
2. DISPERSION
SATURDAY
Zone 640, 642,
and 644 West of R35E:
Mixing height
below 1500 ft early rising to 3500 - 4500 ft by late morning. Afternoon mixing height rises above 5000 ft
then lowers to 2500 - 3500 ft during the evening.
Transport wind
WNW to NNW at 6 - 10 mph.
Surface wind WNW
to NNW at 4 - 8 mph throughout the day.
Zone 637, 643,
645, 646, and 644 East of R34E:
Mixing height
below 800 ft early rising to 3300 - 4300 ft by late morning. Afternoon mixing height 3500 - 4500 ft
lowering to 2500 - 3500 ft during the evening.
Transport wind
WNW to NNW at 4 - 8 mph throughout the day.
Surface wind
light and variable and controlled by local terrain during the morning. Surface wind increases to WNW to NNW at 4 - 8
mph during the afternoon and evening.
OUTLOOK:
SUNDAY
Mixing height
below 1000 ft early rising to 2500 to 3500 ft by late morning rising to 4200 to
5000 ft during the afternoon. Transport
wind WNW to NNW at 4 - 8 mph. Surface
wind light and variable.
MONDAY
Mixing height below
1000 ft early rising to 2800 to 3800 ft by late morning rising to 4500 to 5000
ft during the afternoon. Transport wind
light and variable. Surface wind light
and variable.
TUESDAY
Mixing height
below 1000 ft early rising to 2500 to 3500 ft by late morning rising to 4500 to
5000 ft during the afternoon. Transport
wind light and variable during the morning becoming SSW to WSW at 4 - 8 mph
during the afternoon. Surface wind light
and variable.
3. BURNING INSTRUCTIONS FOR NORTHEAST OREGON
ZONES 637-646
- Valid for burning done Saturday through
Monday, May 30 through June 1, 2026.
==================================================================
For Saturday:
Zone 640, 642,
and 644 West of R35E:
Follow standard
guidance matrix - see section 5 below - for burning units to the W through N of
SSRAs. For units that will smolder
significantly through the night avoid burning within at least 10 miles to the W
through N in or near drainages leading to SSRAs. No additional restrictions necessary.
Zone 637, 643,
645, 646, and 644 East of R34E:
Follow standard
guidance matrix - see section 5 below - for burning units to the WNW through
NNW of SSRAs. For units that will
smolder significantly through the night avoid burning within at least 15 miles
to the WNW through NNW in or near drainages leading to SSRAs. Verify transport winds away from SSRAs if
burning in any other direction. No additional restrictions necessary.
For Sunday:
Follow standard
guidance matrix - see section 5 below - for burning units to the WNW through
NNE of SSRAs. For units that will
smolder significantly through the night avoid burning within at least 25 miles
to the WNW through NE in or near drainages leading to SSRAs. Verify transport winds away from SSRAs if
burning in any other direction. No additional restrictions necessary.
For Monday:
Follow standard
guidance matrix - see section 5 below - for burning units in all directions of
SSRAs. For units that will smolder
significantly through the night avoid burning within at least 25 miles in all
directions of SSRAs. No additional
restrictions necessary.
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4. SPECIAL NOTE:
The ODF forecast
smoke zones differ from the NWS fire zones and
are available at:
https://www.oregon.gov/odf/fire/documents/smoke-forecast-zone-map.pdf
The smoke management forecaster is
available at (503)-
945-7401. Please call this number and not
individual's
numbers to discuss daily burning. For large burns (over
2000 tons) or burns extending over a
considerable period,
please request a
special forecast. Avoid calling
between 1:30 to 2:45 p.m.
http://www.odf.state.or.us/DIVISIONS/protection/fire_protection/
Daily/neo.htm
To subscribe to or unsubscribe from the
email list for this
product, please go to the link:
http://weather.smkmgt.com/mailman/listinfo/
Please ensure your units have been planned
and accomplished by
checking:
http://oregon.gov/ODF/FIRE/SMP/dailysmoke.shtml
A map of planned and/or accomplished burns
is located at:
http://geo.maps.arcgis.com/apps/webappviewer/index.html
?id=a7e321dc8fc444b7a33fbc67bc673a3b
5. STANDARD GUIDANCE MATRIX:
* Greater than 5000 ft mixing height: Limit
to 150 tons per mile
from downwind SSRAs.
Example: 75 tons allowed if burned a half
mile from a downwind
SSRA.
* 3000 - 5000 ft mixing height: Limit to 50
tons per mile if
burning within 5 miles of downwind SSRAs.
Limit to 100 tons
per mile if burning 5 miles or beyond
downwind SSRAs.
Example #1: 200 tons allowed if burned 4
miles from a downwind
SSRA.
Example #2: 500 tons allowed if burned 5
miles from a downwind
SSRA.
* Less than 3000 ft mixing height: No burning
within 5 miles of
downwind SSRAs. Limit to 60 tons per mile
from downwind SSRAs.
* Ensure adequate spacing between units when
burning near downwind
SSRAs.
* Use of polyethylene (PE) sheeting on
greater than 75 percent of
piles in a unit with 60 percent coverage
per pile will allow a
50 percent increase in tonnage over the
existing instruction tonnage
for that zone.
* All exceptions must be coordinated with the
duty forecaster
prior to ignition.
6. BURN MONITORING:
Burns over 2000 tons must be monitored (OAR
629-048-0230(3) -
7/1/14). Monitoring of all burns is highly
recommended for both
smoke management purposes and wildfire
potential.