Dry Thunderstorm Index (DTI) Matrix
Based on GFSX MOS: 4/15/2026 00Z
Generated: 2:00 a.m. PDT Wed Apr 15th, 2026

Western Oregon WED 15 THU 16 FRI 17 SAT 18 SUN 19 MON 20 TUE 21
Astoria 22 11 1 1 1 2 3
Newport 11 13 1 1 1 1 3
North Bend 9 11 2 1 1 2 4
Scappoose 9 11 1 1 1 5 8
Portland 8 10 1 1 2 8 13
McMinnville 5 12 1 1 1 4 6
Salem 4 12 1 1 1 3 6
Corvallis 3 13 1 0 1 4 6
Eugene 2 12 1 0 2 5 5
Roseburg 6 12 1 0 2 5 5
Sexton Summit 8 6 1 1 1 4 7
Medford 8 4 1 2 2 5 6
Central & Eastern WED 15 THU 16 FRI 17 SAT 18 SUN 19 MON 20 TUE 21
The Dalles 8 2 0 1 1 6 21
Redmond 8 3 0 2 5 8 13
Klamath Falls 9 3 1 2 1 3 5
Lakeview 8 7 1 2 1 4 4
Hermiston 9 4 0 1 1 6 16
Pendleton 8 4 0 1 1 6 16
Mecham 9 8 0 1 2 7 13
La Grande 8 12 2 1 2 6 9
Baker 8 13 2 1 1 5 8
Ontario 10 17 1 1 2 3 7
Burns 7 13 0 1 2 3 6
Rome 5 15 0 1 2 3 5

The Dry Thunderstorm Index Matrix gives a "heads-up" when dry thunderstorms may increase wildfire risk.

A text bulletin of this product is available here.

A complete technical description of the Dry Thunderstorm Index is available here.