SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS

SALEM FORESTRY WEATHER CENTER

OREGON DEPARTMENT OF FORESTRY

ISSUED: Friday, February 6, 2026 2:30 PM Sherri Pugh

1. DISCUSSION AND FORECAST FOR NORTHEAST FORECAST AREA ZONES 637-646

Flow aloft will increase from SW on Saturday as upper-level ridging weakens. Dry skies will have increasing clouds. Winds will be from S-SSW, stronger in central zones. Temperatures will rise well-above average. Mixing heights will gradually improve but stay fair.

Sunday will have increasing rain and mountain snow throughout the day. Rainfall amounts will range from 0.05-0.20”. Winds in central zones will be strong from S-SW. Northeastern zones will have lighter winds from SSE-S. Mixing heights will improve.

EXTENDED DISCUSSION

Showers end early on Monday. Freezing levels will drop to under 4000 feet as an upper-level trough moves through. Winds are expected from WSW-W. Temperatures will drop to near seasonable. Mixing heights will be good.

Drier weather returns for Tuesday with light upper-level winds. Temperatures will be near average. Freezing levels will be near 4000 feet with good mixing heights. Winds will turn to come from ESE-SE. Dry weather lasts into midweek.

2. DISPERSION

SATURDAY

Zone 640, 642, and 644 West of R35E:

Mixing height below 300 ft during the morning rising to 2100 - 3100 ft during the afternoon lowering below 1000 ft during the evening.

Transport wind S to SW at 8 - 12 mph.

Surface wind S to SW at 4 - 8 mph throughout the day.

Zone 637, 643, 645, 646, and 644 East of R34E:

Mixing height below 1000 ft during the morning. Afternoon mixing height rising to 1500 - 2500 ft then lowering below 1000 ft during the evening.

Transport wind S to SW at 4 - 8 mph throughout the morning and afternoon. Transport wind shifts to SSE to SSW at 4 - 8 mph during the evening.

Surface wind light and variable and controlled by local terrain.

OUTLOOK:

SUNDAY

Mixing height below 1000 ft early rising to 1500 to 2500 ft by late morning rising to 2500 to 3500 ft during the afternoon. Transport wind S to SW at 8 - 14 mph during the morning becoming SSW to SW at 12 - 24 mph during the afternoon. Surface wind SE to SSW at 4 - 8 mph.

MONDAY

Mixing height below 1000 ft early rising to 2500 to 3500 ft by late morning rising to 3500 to 4500 ft during the afternoon. Transport wind WSW to WNW at 8 - 12 mph. Surface wind SW to W at 6 - 10 mph.

TUESDAY

Mixing height below 1000 ft early rising to 2500 to 3500 ft by late morning rising to 3300 to 4300 ft during the afternoon. Transport wind ESE to SSE at 6 - 10 mph. Surface wind E to SE at 4 - 8 mph.

3. BURNING INSTRUCTIONS FOR NORTHEAST OREGON ZONES 637-646

- Valid for burning done Saturday through Monday, February 7 through 9, 2026.

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For Saturday:

Zone 640, 642, and 644 West of R35E:

Delay ignitions until 10 a.m. Follow standard guidance matrix - see section 5 below - for burning units to the S through WSW of SSRAs. For units that will smolder significantly through the night avoid burning within at least 30 miles to the S through WSW in or near drainages leading to SSRAs. Complete ignitions by 3:30 p.m. No additional restrictions necessary.

Zone 637, 643, 645, 646, and 644 East of R34E:

Delay ignitions until 10 a.m. Follow standard guidance matrix - see section 5 below - for burning units to the SE through WSW of SSRAs. For units that will smolder significantly through the night avoid burning within at least 30 miles to the SE through WSW in or near drainages leading to SSRAs. Verify transport winds away from SSRAs if burning in any other direction. Complete ignitions by 3:30 p.m. No additional restrictions necessary.

For Sunday:

Delay ignitions until 10 a.m. Follow standard guidance matrix - see section 5 below - for burning units to the S through SW of SSRAs. For units that will smolder significantly through the night avoid burning within at least 30 miles to the S through WNW in or near drainages leading to SSRAs. No additional restrictions necessary.

For Monday:

Follow standard guidance matrix - see section 5 below - for burning units to the SW through N 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.