SMOKE MANAGEMENT FORECAST AND INSTRUCTIONS

SALEM FORESTRY WEATHER CENTER

OREGON DEPARTMENT OF FORESTRY

ISSUED: Wednesday, June 10, 2026 2:30 PM Gary Votaw

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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

SHORT-TERM DISCUSSION

NW flow aloft weakens on Thursday as a ridge begins to build offshore. Conditions return to sunny and otherwise seasonal. Mixing conditions will be good with light winds in afternoon favoring SE-S for eastern zones and becoming NW for the west. Winds become W-NW throughout the area by evening.

EXTENDED DISCUSSION

The warming trend continues Friday as the offshore ridge is fully in control. Temperatures will be slightly above average under sunny skies. Burning conditions will be good with NW winds.

Little change is expected for the weekend. The ridge building nears its peak by Sunday while flow aloft on Saturday and Sunday turn N. Sunny and temperatures 5-10^oF above normal continue. Mixing heights on both Saturday and Sunday will be high with mainly N winds.

2. DISPERSION

THURSDAY

Zone 640, 642, and 644 West of R35E:

Mixing height 3500 - 4500 ft during the morning. Mixing height rises to above 5000 ft during the afternoon then lowers to 1600 - 2600 ft during the evening.

Transport wind S to SW at 6 - 10 mph throughout the morning and afternoon. Transport wind shifts to WNW to NNW at 6 - 10 mph during the evening.

Surface wind light and variable and controlled by local terrain through the day. Surface wind increases to NW to N at 4 - 8 mph during the evening.

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

Mixing height 3900 - 4900 ft during the morning. Mixing height rises to above 5000 ft during the afternoon then lowers to 3300 - 4300 ft during the evening.

Transport wind SE to S at 6 - 10 mph throughout the morning and afternoon. Transport wind shifts to WSW to WNW at 6 - 10 mph during the evening.

Surface wind light and variable and controlled by local terrain.

OUTLOOK:

FRIDAY

Mixing height below 1000 ft early rising to 4400 to 5000 ft by late morning rising above 5000 ft during the afternoon. Transport wind WNW to NNW at 6 - 10 mph during the morning becoming WNW to NNW at 10 - 18 mph during the afternoon. Surface wind light and variable during the morning becoming NW to N at 6 - 12 mph during the afternoon.

SATURDAY

Mixing height below 1000 ft early rising to 4500 to 5000 ft by late morning rising above 5000 ft during the afternoon. Transport wind NNW to NNE at 6 - 12 mph. Surface wind NNW to NE at 4 - 8 mph.

SUNDAY

Mixing height below 1000 ft early rising to 4500 to 5000 ft by late morning rising above 5000 ft during the afternoon. Transport wind N to NE at 5 - 9 mph during the morning becoming NNW to NNE at 9 - 15 mph during the afternoon. Surface wind NNW to NE at 4 - 8 mph.

3. BURNING INSTRUCTIONS FOR NORTHEAST OREGON ZONES 637-646

- Valid for burning done Thursday, June 11, 2026.

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Zone 640, 642, and 644 West of R35E:

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 10 miles in all directions of SSRAs. Watch for shifting transport winds. No additional restrictions necessary.

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

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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.