Northwestern Energy - 100 kV transmission Fire Weather Dashboard
Last update: 2025-12-17 00:45. Next update: 2025-12-17 06:45.

Previous forecast cycles can be accessed as:
https://nwefireweather.app/nwe_transmission_100/YYYYMMDD_CC.html
where CC is 00, 06, 12, or 18

**Northwestern Energy - 100 kV Transmission Severe Fire Danger Index Forecast for 12/16/25 - 12/22/25**
Zone	Dec 16	Dec 17	Dec 18	Dec 19	Dec 20	Dec 21	Dec 22
Benchland to Judith Gap Auto - Tier 2	low	low	moderate	low	low	low	low
Billings Steam Plant to Laurel Auto - Tier 2	low	low	low	low	low	low	low
Broadview to Roundup Auto - Tier 2	low	low	moderate	low	low	low	low
Butte Cora to Anaconda Mill Creek - Tier 2	low	low	moderate	low	low	low	low
Butte Montana St to South Butte - Tier 2	low	low	low	low	low	low	low
Chrome Junction to Columbus Auto - Tier 2	low	low	low	low	low	low	low
Chrome Junction to Nye - Tier 2	low	low	moderate	low	low	low	low
Columbus-Rapelje Auto to Columbus Auto - Tier 2	low	low	moderate	low	low	low	low
Columbus Rapelje Auto to Nye Auto - Tier 2	low	low	moderate	low	low	low	low
East Helena to Butte Cora A-Line - Tier 2	low	low	low	low	low	low	low
East Helena to Helena SouthSide B-Line - Tier 2	low	low	low	low	low	low	low
East Helena to Townsend - Tier 3	low	low	low	low	low	low	low
Great Falls Eastside to Lake Helena B-Line - Tier 2	low	low	moderate	low	low	low	low
Great Falls Northwest to Great Falls Southwest - Tier 2	low	low	moderate	low	low	low	low
Great Falls Southside to Lake Helena A-Line - Tier 2	moderate	moderate	moderate	low	low	low	low
Great Falls Southwest to Great Falls Southside - Tier 2	low	low	moderate	low	low	low	low
Helena SouthSide to Butte Barge Pump B-Line - Tier 2	low	low	moderate	low	low	low	low
Holter to Deer Lodge Compressor - Tier 2	low	low	moderate	low	low	low	low
Holter to Great Falls Northwest - Tier 2	low	low	moderate	low	low	low	low
Holter to Helena Valley - Tier 2	low	low	moderate	low	low	low	low
Lake Helena to East Helena A-Line - Tier 2	moderate	moderate	moderate	moderate	moderate	low	low
Lake Helena to East Helena B-Line - Tier 2	low	moderate	moderate	low	low	low	low
Madison Hydro to Bradley Creek - Tier 3	low	low	low	low	low	low	low
Missoula Hillview Heights to Missoula Miller Creek - Tier 2	low	low	low	low	low	low	low
Missoula Industrial to Rattlesnake - Tier 2	low	low	low	low	low	low	low
Morel Junction to Montana Street - Tier 2	low	low	low	low	low	low	low
Painted Robe to Roundup Auto - Tier 2	low	low	low	low	low	low	low
Philipsburg to Anaconda City - Tier 2	low	low	low	low	low	low	low
Rattlesnake to Butler Creek - Tier 3	low	low	low	low	low	low	low
Rattlesnake to Missoula City - Tier 2	low	low	low	low	low	low	low
Renova Auto to Bradley Creek - Tier 3	low	low	low	low	low	low	low
South Butte to Butte Concentrator A-Line - Tier 2	moderate	moderate	moderate	low	moderate	low	low
South Butte to Butte Concentrator B-Line - Tier 2	low	low	low	low	low	low	low
South Butte to Renova Auto - Tier 3	low	low	moderate	low	low	low	low
Spion Kop to Spion Kop Wind - Tier 2	low	low	moderate	low	low	low	low
Spion Kop to Stanford Auto - Tier 2	low	low	low	low	low	low	low
Spokane Bench A-Line Tap to Spokane Bench - Tier 3	low	low	low	low	low	low	low
Spokane Bench B-Line Tap to Spokane Bench - Tier 3	low	low	low	low	low	low	low
Three Forks to Bradley Creek - Tier 2	low	low	low	low	low	low	low
Three Rivers to Trident Auto - Tier 2	low	low	low	low	low	low	low
Two Dot to Gordon Butte - Tier 2	low	low	low	low	low	low	low
Two Dot to Harlowton - Tier 2	low	low	low	low	low	low	low

**Northwestern Energy - 100 kV Transmission Percent of CRI Threshold Forecast for 12/16/25 - 12/22/25**
Zone	Dec 16	Dec 17	Dec 18	Dec 19	Dec 20	Dec 21	Dec 22
Benchland to Judith Gap Auto - Tier 2	10	42	12	18	15	4	2
Billings Steam Plant to Laurel Auto - Tier 2	12	55	13	15	23	3	4
Broadview to Roundup Auto - Tier 2	4	60	10	30	10	1	1
Butte Cora to Anaconda Mill Creek - Tier 2	10	53	9	12	8	1	2
Butte Montana St to South Butte - Tier 2	1	33	2	0	0	0	0
Chrome Junction to Columbus Auto - Tier 2	12	58	13	21	17	3	3
Chrome Junction to Nye - Tier 2	8	70	13	35	12	1	2
Columbus-Rapelje Auto to Columbus Auto - Tier 2	9	80	15	40	14	2	3
Columbus Rapelje Auto to Nye Auto - Tier 2	10	70	14	33	10	1	1
East Helena to Butte Cora A-Line - Tier 2	4	68	22	18	15	3	3
East Helena to Helena SouthSide B-Line - Tier 2	1	38	2	0	0	0	0
East Helena to Townsend - Tier 3	0	58	11	28	15	1	1
Great Falls Eastside to Lake Helena B-Line - Tier 2	1	65	16	24	12	1	1
Great Falls Northwest to Great Falls Southwest - Tier 2	0	60	15	29	17	2	1
Great Falls Southside to Lake Helena A-Line - Tier 2	12	42	19	42	6	1	1
Great Falls Southwest to Great Falls Southside - Tier 2	1	72	27	13	14	0	0
Helena SouthSide to Butte Barge Pump B-Line - Tier 2	0	44	10	28	16	2	0
Holter to Deer Lodge Compressor - Tier 2	2	85	38	56	2	0	0
Holter to Great Falls Northwest - Tier 2	9	67	15	44	16	7	1
Holter to Helena Valley - Tier 2	9	70	19	46	16	7	1
Lake Helena to East Helena A-Line - Tier 2	24	54	31	51	9	1	1
Lake Helena to East Helena B-Line - Tier 2	6	47	17	31	11	0	0
Madison Hydro to Bradley Creek - Tier 3	1	67	5	2	6	1	1
Missoula Hillview Heights to Missoula Miller Creek - Tier 2	1	68	5	2	6	1	1
Missoula Industrial to Rattlesnake - Tier 2	2	56	3	5	2	1	0
Morel Junction to Montana Street - Tier 2	3	55	5	8	3	1	1
Painted Robe to Roundup Auto - Tier 2	8	52	14	25	16	5	4
Philipsburg to Anaconda City - Tier 2	5	55	16	19	12	1	0
Rattlesnake to Butler Creek - Tier 3	8	92	13	22	14	2	1
Rattlesnake to Missoula City - Tier 2	15	59	14	23	19	4	4
Renova Auto to Bradley Creek - Tier 3	10	47	27	24	14	4	3
South Butte to Butte Concentrator A-Line - Tier 2	24	35	35	33	10	6	5
South Butte to Butte Concentrator B-Line - Tier 2	12	28	9	3	7	3	6
South Butte to Renova Auto - Tier 3	3	82	37	28	9	0	1
Spion Kop to Spion Kop Wind - Tier 2	10	58	9	15	6	1	2
Spion Kop to Stanford Auto - Tier 2	1	24	4	1	3	0	0
Spokane Bench A-Line Tap to Spokane Bench - Tier 3	8	36	36	29	2	1	1
Spokane Bench B-Line Tap to Spokane Bench - Tier 3	9	51	12	16	17	4	3
Three Forks to Bradley Creek - Tier 2	2	75	6	6	8	1	0
Three Rivers to Trident Auto - Tier 2	9	51	12	15	17	4	3
Two Dot to Gordon Butte - Tier 2	2	76	6	6	8	1	0
Two Dot to Harlowton - Tier 2	9	84	18	8	32	5	2

**Northwestern Energy - 100 kV Transmission Energy Release Component Percentile Forecast for 12/16/25 - 12/22/25**
Zone	Dec 16	Dec 17	Dec 18	Dec 19	Dec 20	Dec 21	Dec 22
Benchland to Judith Gap Auto - Tier 2	0	0	0	0	0	1	1
Billings Steam Plant to Laurel Auto - Tier 2	0	0	0	0	0	0	0
Broadview to Roundup Auto - Tier 2	5	7	6	5	0	2	6
Butte Cora to Anaconda Mill Creek - Tier 2	0	0	0	0	0	0	0
Butte Montana St to South Butte - Tier 2	0	0	0	0	0	0	0
Chrome Junction to Columbus Auto - Tier 2	0	0	0	0	0	0	0
Chrome Junction to Nye - Tier 2	2	3	3	3	0	1	3
Columbus-Rapelje Auto to Columbus Auto - Tier 2	2	3	3	3	0	1	4
Columbus Rapelje Auto to Nye Auto - Tier 2	3	4	5	5	2	4	6
East Helena to Butte Cora A-Line - Tier 2	0	0	0	0	1	2	3
East Helena to Helena SouthSide B-Line - Tier 2	0	0	0	0	0	0	0
East Helena to Townsend - Tier 3	0	0	0	0	0	0	0
Great Falls Eastside to Lake Helena B-Line - Tier 2	0	0	0	1	2	5	7
Great Falls Northwest to Great Falls Southwest - Tier 2	0	0	0	0	0	1	3
Great Falls Southside to Lake Helena A-Line - Tier 2	6	6	6	5	3	4	7
Great Falls Southwest to Great Falls Southside - Tier 2	0	0	0	0	0	0	1
Helena SouthSide to Butte Barge Pump B-Line - Tier 2	0	0	0	0	1	2	3
Holter to Deer Lodge Compressor - Tier 2	0	0	0	1	1	0	1
Holter to Great Falls Northwest - Tier 2	0	0	0	0	0	1	1
Holter to Helena Valley - Tier 2	0	0	0	0	0	0	1
Lake Helena to East Helena A-Line - Tier 2	9	10	11	9	8	11	13
Lake Helena to East Helena B-Line - Tier 2	2	4	4	3	3	5	8
Madison Hydro to Bradley Creek - Tier 3	0	0	0	0	0	0	0
Missoula Hillview Heights to Missoula Miller Creek - Tier 2	0	0	0	0	0	0	0
Missoula Industrial to Rattlesnake - Tier 2	0	0	0	0	0	0	0
Morel Junction to Montana Street - Tier 2	0	0	0	0	0	0	0
Painted Robe to Roundup Auto - Tier 2	0	0	0	0	0	1	2
Philipsburg to Anaconda City - Tier 2	0	0	0	0	0	1	2
Rattlesnake to Butler Creek - Tier 3	0	0	0	0	0	0	0
Rattlesnake to Missoula City - Tier 2	0	0	0	0	0	0	0
Renova Auto to Bradley Creek - Tier 3	0	0	0	0	0	1	2
South Butte to Butte Concentrator A-Line - Tier 2	0	0	0	0	0	0	0
South Butte to Butte Concentrator B-Line - Tier 2	0	0	0	0	0	0	0
South Butte to Renova Auto - Tier 3	0	0	1	1	1	1	2
Spion Kop to Spion Kop Wind - Tier 2	0	0	0	0	0	0	0
Spion Kop to Stanford Auto - Tier 2	0	0	0	0	0	0	0
Spokane Bench A-Line Tap to Spokane Bench - Tier 3	0	0	0	0	0	0	0
Spokane Bench B-Line Tap to Spokane Bench - Tier 3	0	0	0	0	0	0	1
Three Forks to Bradley Creek - Tier 2	0	0	0	0	0	0	0
Three Rivers to Trident Auto - Tier 2	0	0	0	0	0	0	1
Two Dot to Gordon Butte - Tier 2	0	0	0	0	0	0	0
Two Dot to Harlowton - Tier 2	0	0	0	0	0	0	0

**Northwestern Energy - 100 kV Transmission Max Wind Gust Forecast for 12/16/25 - 12/22/25**
Zone	Dec 16	Dec 17	Dec 18	Dec 19	Dec 20	Dec 21	Dec 22
Benchland to Judith Gap Auto - Tier 2	39	62	46	52	33	24	24
Billings Steam Plant to Laurel Auto - Tier 2	32	61	36	48	29	19	23
Broadview to Roundup Auto - Tier 2	28	60	31	45	26	19	24
Butte Cora to Anaconda Mill Creek - Tier 2	34	56	31	42	22	15	19
Butte Montana St to South Butte - Tier 2	22	53	25	45	23	13	18
Chrome Junction to Columbus Auto - Tier 2	34	60	38	43	27	21	21
Chrome Junction to Nye - Tier 2	30	60	31	45	26	18	24
Columbus-Rapelje Auto to Columbus Auto - Tier 2	31	60	31	45	26	18	24
Columbus Rapelje Auto to Nye Auto - Tier 2	31	57	31	46	26	18	19
East Helena to Butte Cora A-Line - Tier 2	37	65	55	58	31	22	22
East Helena to Helena SouthSide B-Line - Tier 2	26	54	24	48	24	13	18
East Helena to Townsend - Tier 3	16	61	51	41	31	19	16
Great Falls Eastside to Lake Helena B-Line - Tier 2	35	68	47	53	31	14	22
Great Falls Northwest to Great Falls Southwest - Tier 2	26	63	47	49	31	23	17
Great Falls Southside to Lake Helena A-Line - Tier 2	34	56	37	51	28	21	22
Great Falls Southwest to Great Falls Southside - Tier 2	14	65	58	32	33	10	17
Helena SouthSide to Butte Barge Pump B-Line - Tier 2	27	65	48	49	31	19	13
Holter to Deer Lodge Compressor - Tier 2	19	62	55	51	32	11	16
Holter to Great Falls Northwest - Tier 2	37	66	49	59	34	28	20
Holter to Helena Valley - Tier 2	37	66	48	59	33	28	21
Lake Helena to East Helena A-Line - Tier 2	35	55	47	50	25	29	28
Lake Helena to East Helena B-Line - Tier 2	23	54	35	43	26	10	16
Madison Hydro to Bradley Creek - Tier 3	23	66	32	50	27	13	17
Missoula Hillview Heights to Missoula Miller Creek - Tier 2	23	66	32	50	27	13	17
Missoula Industrial to Rattlesnake - Tier 2	26	54	24	48	24	14	16
Morel Junction to Montana Street - Tier 2	27	57	35	41	23	15	16
Painted Robe to Roundup Auto - Tier 2	41	67	52	57	35	28	31
Philipsburg to Anaconda City - Tier 2	35	72	50	55	32	19	19
Rattlesnake to Butler Creek - Tier 3	32	72	39	46	26	15	20
Rattlesnake to Missoula City - Tier 2	35	60	40	43	28	22	23
Renova Auto to Bradley Creek - Tier 3	42	71	57	57	37	26	30
South Butte to Butte Concentrator A-Line - Tier 2	32	58	46	52	27	38	31
South Butte to Butte Concentrator B-Line - Tier 2	36	63	41	44	25	28	34
South Butte to Renova Auto - Tier 3	17	64	54	45	31	12	19
Spion Kop to Spion Kop Wind - Tier 2	33	57	31	42	22	15	18
Spion Kop to Stanford Auto - Tier 2	25	52	30	45	18	15	16
Spokane Bench A-Line Tap to Spokane Bench - Tier 3	43	63	60	62	24	25	22
Spokane Bench B-Line Tap to Spokane Bench - Tier 3	35	61	42	49	32	23	24
Three Forks to Bradley Creek - Tier 2	29	71	38	47	28	12	17
Three Rivers to Trident Auto - Tier 2	35	61	42	49	32	22	24
Two Dot to Gordon Butte - Tier 2	29	71	38	47	28	12	17
Two Dot to Harlowton - Tier 2	34	59	32	49	30	15	15