SMOKE MANAGEMENT
FORECAST AND INSTRUCTIONS
SALEM FORESTRY
WEATHER CENTER
OREGON DEPARTMENT
OF FORESTRY
ISSUED: Thursday,
November 13, 2025
2:30 PM Sherri Pugh
1. DISCUSSION AND FORECAST FOR NORTHEAST
FORECAST AREA ZONES 637-646
A few showers remain
to the north on Friday, but the bulk of the precipitation will have ended as an
upper-level trough moves inland. Winds
will come from SW, light at the surface.
Temperatures will be above average and mixing heights will be good.
EXTENDED DISCUSSION
Saturday will have partly cloudy skies
and dry weather. Broad upper-level
ridging builds in behind the departing trough with light flow aloft. Winds will be light from SSE-SW. Mixing heights will be suppressed with warmer
air aloft. Temperatures continue above
seasonable.
A system will move southwest of the region on
Sunday with some showers to the east late. Another upper-level trough will be offshore
with light SW flow aloft. Surface winds
will be light and variable. Transport
winds will come from S. Temperatures stay
above average and mixing heights will be fair to good.
Showers arrive with the next
upper-level trough moving inland for Monday.
Freezing levels will drop to 5-6000 feet. Temperatures will be near seasonable. Surface winds are expected from S while
transport winds will come from SSW. Mixing
heights will rise high. Rain and mountain
snow continue into Tuesday.
2. DISPERSION
FRIDAY
Zone 640, 642,
and 644 West of R35E:
Mixing height
below 800 ft early rising to 3300 - 4300 ft by late morning. Afternoon mixing height rises to 4000 - 5000
ft then lowers below 1000 ft during the evening.
Transport wind
SSW to WSW at 9 - 15 mph during the morning and afternoon. Transport wind decreases to SW to W at 6 - 10
mph during the evening.
Surface wind SSW
to WSW at 4 - 8 mph during the morning and afternoon. Surface wind becomes light and variable and
controlled by local terrain during the evening.
Zone 637, 643,
645, 646, and 644 East of R34E:
Mixing height
below 500 ft early rising to 2300 - 3300 ft by late morning. Afternoon mixing height rises to 3300 - 4300
ft then lowers below 1000 ft during the evening.
Transport wind
SSW to WSW at 6 - 10 mph during the morning.
Transport wind increases to SSW to WSW at 9 - 15 mph during the
afternoon then decreases to SSW to WSW at 4 - 8 mph during the evening.
Surface wind
light and variable and controlled by local terrain.
OUTLOOK:
SATURDAY
Mixing height
below 1000 ft early rising to 1200 to 2200 ft by late morning rising to 1900 to
2900 ft during the afternoon. Transport
wind light and variable during the morning becoming SE to SSW at 4 - 8 mph
during the afternoon. Surface wind light
and variable.
SUNDAY
Mixing height
below 1000 ft early rising to 1000 to 2000 ft by late morning rising to 2000 to
3000 ft during the afternoon. Transport
wind SSE to SSW at 4 - 8 mph. Surface
wind light and variable.
MONDAY
Mixing height
below 1000 ft early rising to 3500 to 4500 ft by late morning rising to 4500 to
5000 ft during the afternoon. Transport
wind S to SW at 6 - 10 mph. Surface wind
SSE to SSW at 4 - 8 mph.
3. BURNING INSTRUCTIONS FOR NORTHEAST OREGON
ZONES 637-646
- Valid for burning done Friday, November
14, 2025.
==================================================================
Zone 640, 642,
and 644 West of R35E:
Follow standard
guidance matrix - see section 5 below - for burning units to the SSW through W
of SSRAs. For units that will smolder
significantly through the night avoid burning within at least 25 miles to the
SSW through W 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 SSW through
WSW of SSRAs. For units that will
smolder significantly through the night avoid burning within at least 25 miles
to the S through WSW in or near drainages leading to SSRAs. No additional restrictions necessary.
=========================================================
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.