SMOKE MANAGEMENT
FORECAST AND INSTRUCTIONS
SALEM FORESTRY
WEATHER CENTER
OREGON DEPARTMENT
OF FORESTRY
ISSUED: Monday,
July 7, 2025
2:30 PM Gary Votaw
1. DISCUSSION AND
FORECAST FOR THE WESTERN OREGON AREA FORECAST ZONES 601-623 and 639
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***
Constructed For Guidance (Clearance by Phone Only) ***
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********************** Off-Season
Instructions **********************
Written
forecasts/instructions have ended for the summer.
Verbal smoke clearance
must be obtained for all prescribed burning by calling the ODF forecast office
at 503-945-7401.
Office hours are Monday –
Friday from 7 a.m. until 5 p.m. (closed weekends/holidays).
Written forecasts will
resume in October.
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2. DISPERSION
TUESDAY
Zone 601, 602,
603 and 612 (North Coast Range):
MORNING
Mixing height below 1000 ft early rising to 1400 - 2400 ft.
Transport wind
light and variable and controlled by local terrain.
Surface wind
light and variable and controlled by local terrain.
AFTERNOON
Mixing height
1900 - 2900 ft.
Transport wind
increases to WNW to NNW at 4 - 8 mph.
Surface wind
increases to W to NW at 4 - 8 mph.
EVENING
Mixing height
1000 - 1800 ft.
Transport wind
increases to WNW to NW at 12 - 22 mph.
Surface wind WNW
to NW at 8 - 12 mph.
Zone 605-611 and
639 (North Cascades):
MORNING
Mixing height below
1000 ft early rising to 1900 - 2900 ft.
Transport wind
light and variable and controlled by local terrain.
Surface wind
light and variable and controlled by local terrain.
AFTERNOON
Mixing height
rising to 4000 - 5000 ft.
Transport wind
increases to WSW to WNW at 8 - 14 mph.
Surface wind
increases to SW to WNW at 4 - 8 mph.
EVENING
Mixing height
2700 - 3700 ft.
Transport wind
shifts to WNW to NNW at 8 - 14 mph.
Surface wind
shifts to WNW to NNW at 6 - 10 mph.
Zone 615-620
(South Coast Range):
MORNING
Mixing height below
1000 ft early rising to 1700 - 2700 ft.
Transport wind
light and variable and controlled by local terrain.
Surface wind
light and variable and controlled by local terrain.
AFTERNOON
Mixing height
1500 - 2500 ft.
Transport wind
increases to WSW to NW at 6 - 12 mph.
Surface wind
increases to W to NW at 5 - 9 mph.
EVENING
Mixing height
1100 - 2100 ft.
Transport wind W
to NW at 5 - 9 mph.
Surface wind similar to afternoon.
Zone 616-623
(South Cascades):
MORNING
Mixing height below
1000 ft early rising to 2500 - 3500 ft.
Transport wind SW
to W at 4 - 8 mph.
Surface wind
light and variable and controlled by local terrain.
AFTERNOON
Mixing height
rising above 5000 ft.
Transport wind SW
to WNW at 6 - 10 mph.
Surface wind
increases to WSW to WNW at 4 - 8 mph.
EVENING
Mixing height
3200 - 4200 ft.
Transport wind
shifts to WNW to NNW at 8 - 12 mph.
Surface wind WNW
to NNW at 6 - 12 mph.
OUTLOOK:
WEDNESDAY
In the Coast
Range mixing height below 1000 ft early rising to 1600 to 2600 ft by late
morning rising to 2900 to 3900 ft during the afternoon. In the Cascades mixing height below 1000 ft
early rising to 2400 to 3400 ft by late morning rising to 3800 to 4800 ft
during the afternoon. Transport wind WSW
to WNW at 4 - 8 mph during the morning becoming WSW to WNW at 9 - 15 mph during
the afternoon. Surface wind light and
variable during the morning becoming W to NW at 4 - 8 mph during the afternoon.
THURSDAY
In the north
mixing height below 1000 ft early rising to 2500 to 3500 ft by late morning
rising to 4000 to 5000 ft during the afternoon.
In the south mixing height below 1000 ft early rising to 1600 to 2600 ft
by late morning rising to 4000 to 5000 ft during the afternoon. Transport wind NNW to NNE at 5 - 9 mph. Surface wind light and variable during the
morning becoming NW to N at 4 - 8 mph during the afternoon.
FRIDAY
Mixing height
below 1000 ft early rising to 2400 to 3400 ft by late morning rising to 3800 to
4800 ft during the afternoon. Transport
wind NE to E at 6 - 10 mph during the morning
becoming N to NE at 8 - 14 mph during the afternoon. Surface wind NNE to ENE at 4 - 8 mph during
the morning becoming NW to N at 5 - 9 mph during the afternoon.
3. BURNING
INSTRUCTIONS FOR ALL ZONES IN THE WESTERN OREGON AREA
- Valid for burning done Tuesday through
Friday, July 8 through 11, 2025.
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For Tuesday:
Coast Range
Zone 601, 612,
and 616 east of R9W
Units should be
600 tons or less, spaced 12 miles apart, and 12 miles from downwind SSRAs.
Zone 602 and 603
No burning
allowed. Higher tonnage is possible
south of the Siuslaw River in Zone 603.
Call the forecaster.
Zone 615 and 616
west of R8W
Units should be
900 tons or less, spaced 12 miles apart, and 12 miles from downwind SSRAs.
Zone 618 and 619
Units should be
1200 tons or less, spaced 12 miles apart, and 12 miles from downwind SSRAs.
Zone 620
Units should be
300 tons or less, spaced 12 miles apart, and 12 miles from downwind SSRAs.
Cascades
All zones except
Zone 610 and 611
Use standard
guidance matrix - see section 5 below.
Ensure adequate distance from downwind SSRAs for smoke to
dissipate. From T15S through T20S in
Zone 608 units should be 1200 tons or less, spaced 6 miles apart.
Zone 610
Units should be
1200 tons or less, spaced 6 miles apart, and 8 miles from downwind SSRAs.
Zone 611
Units should be
1500 tons or less, spaced 6 miles apart, and 8 miles from downwind SSRAs.
Siskiyous
Units should be
1500 tons or less, spaced 3 miles apart, and 5 miles from downwind SSRAs.
For Wednesday:
Coast Range
Zone 601 and 612
Units should be
1000 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs. Restrict units in or near corridors to 500
tons or less.
Zone 602 and 603
Units should be
400 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs. Limit burning in or near corridors. Higher tonnage is possible south of the
Siuslaw River in Zone 603. Call the
forecaster.
Zone 615 and 616
west of R8W
Units should be
1200 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs.
Zone 616 east of
R9W
Units should be
750 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs.
Zone 618 and 619
Use standard guidance matrix. (See section 5 below.)
Zone 620
Units should be
300 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs. Higher tonnage is possible south of
T35S. Call the forecaster.
Cascades
Zone 605, 606,
607, 608, 639, 616, 617, and 623
Use standard
guidance matrix - see section 5 below.
Ensure adequate distance from downwind SSRAs for smoke to
dissipate. From T15S through T20S in
Zone 608 units should be 1200 tons or less, spaced 6 miles apart.
Zone 610 and 622
Units should be
1200 tons or less, spaced 6 miles apart, and 8 miles from downwind SSRAs. East of R2W in Zone 622, use standard
guidance matrix - see section 5 below.
Zone 611
Units should be
1500 tons or less, spaced 6 miles apart, and 8 miles from downwind SSRAs.
Zone 620
Units should be
750 tons or less, spaced 6 miles apart, and 8 miles from downwind SSRAs.
Siskiyous
Use standard
guidance matrix - see section 5 below. Ensure adequate distance from downwind
SSRAs for smoke to dissipate.
For Thursday:
Coast Range
Zone 601, 612,
615, 618, and 619
Use standard guidance matrix. (See section 5 below.) Avoid burning directly upwind of coastal
SSRAs.
Zone 602, 603,
and 616 east of R9W
Units should be
1000 tons or less, spaced 6 miles apart, and 8 miles from downwind SSRAs. Limit tonnage north of Forest Grove/Hillsboro
or Sheridan/Willamina in Zone 602. Higher
tonnage is possible south of T17S in Zone 603.
Call the forecaster.
Zone 616 west of
R8W
Units should be
1500 tons or less, spaced 6 miles apart, and 8 miles from downwind SSRAs.
Zone 620
Units should be
600 tons or less, spaced 6 miles apart, and 8 miles from downwind SSRAs. Higher tonnage is possible south of the Rogue
River. Call the forecaster.
Cascades
Zone 605, 606,
607, 608, 639, 611, 616, 617, and 623
Use standard
guidance matrix - see section 5 below.
Ensure adequate distance from downwind SSRAs for smoke to
dissipate. Verify transport winds away
from SSRA if burning within 10 miles of the SSRA in Zone 605 and 606. Higher tonnage is possible south of T20S in
Zone 606 - call the forecaster. South of
T30S in Zone 616 units should be 1000 tons or less, spaced 3 miles apart.
Zone 610
Units should be
1200 tons or less, spaced 3 miles apart, and 5 miles from downwind SSRAs.
Zone 620 and 622
Units should be
750 tons or less, spaced 3 miles apart, and 5 miles from downwind SSRAs.
Siskiyous
Use standard
guidance matrix - see section 5 below.
For Friday:
Coast Range
Zone 601, 612,
615, 616, 618, 619, and 620
Use standard guidance matrix. (See section 5 below.) Avoid burning directly upwind of coastal
SSRAs.
Zone 602 and 603
Units should be
600 tons or less, spaced 8 miles apart, and 10 miles from downwind SSRAs. Limit tonnage north of Forest Grove/Hillsboro
or Sheridan/Willamina in Zone 602. Higher
tonnage is possible south of T17S in Zone 603.
Call the forecaster.
Cascades
Zone 605, 606,
620, and 622
Units should be
750 tons or less, spaced 3 miles apart, and 5 miles from downwind SSRAs. Higher tonnage is possible south of T20S in
Zone 606 - call the forecaster.
Zone 607 and 608
Units should be
1500 tons or less, spaced 3 miles apart, and 5 miles from downwind SSRAs.
Zone 639, 610,
611, 616, 617, and 623
Use standard
guidance matrix - see section 5 below.
Ensure adequate distance from downwind SSRAs for smoke to
dissipate. South of T30S in Zone 616
units should be 1000 tons or less, spaced 3 miles apart. South of T30S in Zone 617 units should be
1000 tons or less, spaced 3 miles apart.
Siskiyous
Use standard
guidance matrix - see section 5 below.
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4. SPECIAL NOTES:
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
Call the smoke management duty forecaster
at (503) 945-7401 to
discuss burning. Please do not call individual's numbers to
discuss daily burning. If the forecaster is
not available,
leave a message and they will return your
call as soon as possible.
Avoid calling between 1:30 to 2:45 p.m.
The forecast is available on the Internet
at:
http://www.odf.state.or.us/DIVISIONS/protection/fire_protection/
Daily/smi.htm
Please ensure your units have been planned
and accomplished by
checking:
http://www.oregon.gov/ODF/Fire/Pages/Burn.aspx
A map of planned and/or accomplished burns
is located at:
http://geo.maps.arcgis.com/apps/webappviewer/index.html
?id=a7e321dc8fc444b7a33fbc67bc673a3b
The forecast/instruction telephone
recording is: (503) 945-7400.
To subscribe to or unsubscribe from the
email list for this
product, please go to the link:
http://weather.smkmgt.com/mailman/listinfo/
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.
Example: 300 tons allowed if burned 5 miles
from a downwind SSRA.
* 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.