Live/247 Rank/Montana

Montana 24/7 Rank

Every station in Montana ranked by its 247 score out of 100: how reliably it reports, how accurate its readings are against a reference station, how they pass their checks and how they stand against the forecast, over the last seven days.

898 stations ranked29.5% sent every report dueranked October 4, 2026page 3 of 4Montana instrumentsMontana weather

A station is ranked once its week holds enough reports to measure: 12, or 3 days for a gauge that reports once a day. Of the 898 ranked here, 892 have a page of their own; the rest are platforms heard here that have not yet reported enough to be listed.

Every station, ranked

Rank	Station	Score	Network	County	Received	Reports	Arrives in	Longest silence
501	POWDER RIVER AT MoorheadMHDM8	91.7	Gauge	Powder River	99.4%	167 of 168	31 min	1.8 h
502	Sundance - Cut BankBNKM8	91.7	Gauge	Glacier	99.4%	167 of 168	31 min	2 h
502	Madison River 4 NW CameronCMNM8	91.7	Gauge	Madison	99.4%	167 of 168	31 min	2 h
502	Beaverhead River 7 NE DillonDILM8	91.7	Gauge	Beaverhead	99.4%	167 of 168	31 min	2 h
505	BIG HORN LAKE AT Yellowtail DamBHRM8	91.7	Gauge	Big Horn	97.0%	163 of 168	27 min	2 h
505	Marias River 15 SSW Chester Tiber Dam CoopTBRM8	91.7	Gauge	Liberty	97.0%	163 of 168	27 min	2 h
507	Flint Creek Near DrummondFCKM8	91.6	Gauge	Granite	99.4%	167 of 168	32 min	2 h
507	Silver Bow Ck AtWMSM8	91.6	Gauge	Deer Lodge	99.4%	167 of 168	32 min	2 h
509	Flint Creek Nr Southern CrossFTCM8	91.4	Gauge	Granite	98.8%	166 of 168	31 min	2 h
509	Chinook - Redrock CouleeLEEM8	91.4	Gauge	Hill	98.8%	166 of 168	31 min	2 h
511	S. Fork Jocko River 12 NE South Fork JockoARLM8	91.4	Gauge	Lake	98.8%	166 of 168	31 min	2 h
511	W.F.Bitterroot River 17 SW Bitterroot Nr ConnerWFBM8	91.4	Gauge	Ravalli	98.8%	166 of 168	31 min	2 h
513	Simpson - Milk RiverECCM8	91.2	Gauge	Hill	98.2%	165 of 168	31 min	2 h
514	Logan LandfillLLFM8	91.1	Cooperative	Gallatin	85.7%	6 of 7	15 min	24 h
515	ChoteauCOUM8	91.1	Cooperative	Teton	85.7%	6 of 7	24 min	24 h
515	Grass RangeGSSM8	91.1	Cooperative	Fergus	85.7%	6 of 7	24 min	24 h
517	Saco 1 NnwSAOM8	91.1	Cooperative	Phillips	85.7%	6 of 7	24 min	36 h
518	West Yellowstone GatewayWYGM8	91.1	Cooperative	Gallatin	85.7%	6 of 7	28 min	24.3 h
519	StanfordSTNM8	91.1	Cooperative	Judith Basin	85.7%	6 of 7	34 min	24 h
520	Polson Kerr DamKERM8	91.1	Cooperative	Lake	85.7%	6 of 7	44 min	26 h
521	Madison River 6 NE McAllister below Ennis LakeMADM8	91.1	Cooperative	Madison	85.7%	6 of 7	64 min	2 days
522	Sun River 4 SSNRM8	91.1	Cooperative	Cascade	85.7%	6 of 7	74 min	24 h
523	Thompson Falls PhTHOM8	91.1	Cooperative	Sanders	85.7%	6 of 7	75 min	26 h
524	BrandenbergBDBM8	91.1	Cooperative	Rosebud	85.7%	6 of 7	1.6 h	24 h
524	Heron 2NWHERM8	91.1	Cooperative	Sanders	85.7%	6 of 7	1.6 h	24 h
526	ShelbySLBM8	91.1	Cooperative	Toole	85.7%	6 of 7	1.7 h	33 h
527	CircleCIRM8	91.1	Cooperative	Mccone	85.7%	6 of 7	2.1 h	25 h
528	Silver BowSLVM8	91.0	Gauge	Silver Bow	97.6%	164 of 168	31 min	2 h
529	Maxwell - Flint CreekFLNM8	91.0	Gauge	Granite	97.6%	164 of 168	31 min	2.8 h
530	Emigrant 4NE - Mill CreekMIKM8	91.0	Gauge	Park	97.6%	164 of 168	31 min	2 h
530	Mission Creek Above Mission ReservoirMSNM8	91.0	Gauge	Lake	97.6%	164 of 168	31 min	2 h
532	Big Muddy Creek 3 SW AntelopeBGCM8	90.9	Gauge	Sheridan	100%	168 of 168	22 min	60 min
533	Pleasant Valley 5 SEPLVM8	90.9	Gauge	Flathead	100%	168 of 168	36 min	62 min
534	Little Snowy RAWSLSNM8	90.6	Gauge	Fergus	99.4%	167 of 168	17 min	2 h
535	Missouri River AT Fort BentonFBNM8	90.5	Gauge	Chouteau	100%	168 of 168	27 min	60 min
536	Simms 1 NeSMMM8	90.5	Cooperative	Cascade	98.2%	165 of 168	35 min	2 h
537	Milk River 35 N RudyardERNM8	90.0	Gauge	Hill	100%	168 of 168	22 min	60 min
538	Forsyth Tillitt Field1S3	89.9	Airport	Rosebud	89.0%	449 of 504	6 min	5.3 h
539	Augusta 24NW - North Fork Sun River Near AugustaANFM8	89.8	Gauge	Glacier	97.0%	163 of 168	36 min	2 h
540	Como Dam And RsvrHMTM8	89.7	Gauge	Ravalli	99.4%	167 of 168	27 min	2 h
541	Missouri River 13 NE Great Falls below Morony DamGFLM8	89.7	Gauge	Cascade	88.3%	198 of 224	22 min	2 h
542	EnnisEKS	89.4	Airport	Madison	99.2%	500 of 504	6 min	60 min
543	West Yellowstone SnotelWYSM8	89.3	Gauge	Unknown MTC113	95.2%	160 of 168	37 min	5 h
544	Madison River 2 E West YellowstoneMDSM8	89.2	Gauge	Gallatin	99.4%	167 of 168	27 min	2 h
545	St. Mary 1 SSW04130	88.8	Reference	Glacier	100%	67 of 67	1.5 h	3 h
545	Dillon 18 WSW04137	88.8	Reference	Beaverhead	100%	67 of 67	1.5 h	3 h
545	Lewistown 42 WSW04140	88.8	Reference	Judith Basin	100%	67 of 67	1.5 h	3 h
545	Wolf Point 34 NE94059	88.8	Reference	Roosevelt	100%	67 of 67	1.5 h	3 h
549	Red LodgeRELM8	88.8	Cooperative	Carbon	85.7%	6 of 7	-	25 h
550	ValentineVALM8	88.8	Cooperative	Fergus	85.7%	6 of 7	-	2 days
551	Milk River AT MaltaMALM8	88.5	Gauge	Phillips	99.4%	167 of 168	47 min	3 h
552	Ennis Lake near McAllisterMADM8	88.3	Gauge	Madison	98.8%	166 of 168	47 min	3 h
553	Wolf Point 29 ENE94060	88.3	Reference	Roosevelt	98.5%	66 of 67	1.5 h	4 h
554	Absarokee 3NEABSM8	88.2	Cooperative	Stillwater	100%	168 of 168	50 min	1.8 h
555	Moorhead 9 NEMORM8	88.2	Cooperative	Powder River	85.7%	6 of 7	8.7 h	24 h
556	Helena RegionalHLN	88.1	Airport	Lewis & Clark	99.4%	167 of 168	8 min	2 h
557	Anaconda3U3	88.0	Airport	Deer Lodge	93.0%	469 of 504	6 min	4.3 h
558	BIG MUDDY CREEK 5 W CulbertsonCBMM8	87.9	Gauge	Sheridan	100%	168 of 168	51 min	1.8 h
558	Twin Bridges 5N - Jefferson RiverTWJM8	87.9	Gauge	Madison	100%	168 of 168	51 min	1.8 h
560	Musselshell River 2 SW RoundupRUPM8	87.9	Gauge	Musselshell	98.2%	165 of 168	48 min	3 h
561	Moccasin ScanMSCM8	87.9	Gauge	Judith Basin	95.2%	160 of 168	37 min	5 h
562	Badger Pass SnotelBADM8	87.5	Gauge	Pondera	95.2%	160 of 168	37 min	5 h
562	Hot Springs 21NNW - Bassoo PeakBASM8	87.5	Gauge	Sanders	95.2%	160 of 168	37 min	5 h
562	Beagle Springs SnotelBEAM8	87.5	Gauge	Beaverhead	95.2%	160 of 168	37 min	5 h
562	Black Pine SnotelBLKM8	87.5	Gauge	Granite	95.2%	160 of 168	37 min	5 h
562	Burnt Mtn SnotelBMTM8	87.5	Gauge	Carbon	95.2%	160 of 168	37 min	5 h
562	Box Canyon SnotelBOXM8	87.5	Gauge	Park	95.2%	160 of 168	37 min	5 h
562	Noxon - Chicago RidgeCHIM8	87.5	Gauge	Sanders	95.2%	160 of 168	37 min	5 h
562	Cole Creek SnotelCLCM8	87.5	Gauge	Carbon	95.2%	160 of 168	37 min	5 h
562	Calvert Creek SnotelCLVM8	87.5	Gauge	Deer Lodge	95.2%	160 of 168	37 min	5 h
562	Copper Camp SnotelCPCM8	87.5	Gauge	Lewis and Clark	95.2%	160 of 168	37 min	5 h
562	Daisy Peak SnotelDAZM8	87.5	Gauge	Meagher	95.2%	160 of 168	37 min	5 h
562	Divide SnotelDIVM8	87.5	Gauge	Madison	95.2%	160 of 168	37 min	5 h
562	Dupuyer Creek SnotelDPYM8	87.5	Gauge	Teton	95.2%	160 of 168	37 min	5 h
562	Emery Creek SnotelEMCM8	87.5	Gauge	Flathead	95.2%	160 of 168	37 min	5 h
562	Frohner Meadow SnotelFRHM8	87.5	Gauge	Jefferson	95.2%	160 of 168	37 min	5 h
562	Fisher Creek SnotelFSHM8	87.5	Gauge	Park	95.2%	160 of 168	37 min	5 h
562	Hawkins Lake SnotelHAWM8	87.5	Gauge	Lincoln	95.2%	160 of 168	37 min	5 h
562	Lick Creek SnotelLCKM8	87.5	Gauge	Gallatin	95.2%	160 of 168	37 min	5 h
562	Lemhi Ridge SnotelLMHM8	87.5	Gauge	Beaverhead	95.2%	160 of 168	37 min	5 h
562	Lakeview Ridge SnotelLVRM8	87.5	Gauge	Beaverhead	95.2%	160 of 168	37 min	5 h
562	Lower Twin SnotelLWTM8	87.5	Gauge	Madison	95.2%	160 of 168	37 min	5 h
562	Mule Creek SnotelMULM8	87.5	Gauge	Beaverhead	95.2%	160 of 168	37 min	5 h
562	Pickfoot Creek SnotelPCKM8	87.5	Gauge	Meagher	95.2%	160 of 168	37 min	5 h
562	Peterson Meadows SnotelPTNM8	87.5	Gauge	Granite	95.2%	160 of 168	37 min	5 h
562	Rocker Peak SnotelRKPM8	87.5	Gauge	Jefferson	95.2%	160 of 168	37 min	5 h
562	Saddle Mtn. SnotelSDMM8	87.5	Gauge	Ravalli	95.2%	160 of 168	37 min	5 h
562	Short Creek SnotelSHCM8	87.5	Gauge	Madison	95.2%	160 of 168	37 min	5 h
562	Jackson - Slagamelt LakesSLMM8	87.5	Gauge	Beaverhead	95.2%	160 of 168	37 min	5 h
562	Twin Lakes SnotelTWLM8	87.5	Gauge	Ravalli	95.2%	160 of 168	37 min	5 h
591	Poplar River 4 N PoplarPLRM8	87.4	Gauge	Roosevelt	100%	168 of 168	26 min	60 min
592	Teton River AT LomaLTRM8	87.4	Gauge	Chouteau	100%	168 of 168	27 min	60 min
593	Yellowstone River 5 S LivingstonLIVM8	87.4	Gauge	Park	98.8%	166 of 168	47 min	4 h
594	Conrad Ag Rc ScanCOAM8	87.4	Gauge	Pondera	95.2%	160 of 168	37 min	5 h
594	Lindsay 1 ScanLDSM8	87.4	Gauge	Dawson	95.2%	160 of 168	37 min	5 h
594	Table Mountain SnotelTABM8	87.4	Gauge	Gallatin	95.2%	160 of 168	37 min	5 h
594	Violett ScanVIOM8	87.4	Gauge	Liberty	95.2%	160 of 168	37 min	5 h
598	Sleeping Woman SnotelSQPM8	87.3	Gauge	Sanders	94.6%	159 of 168	37 min	5 h
598	White Mill SnotelWHTM8	87.3	Gauge	Park	94.6%	159 of 168	37 min	5 h
600	St. Regis River 1 W At St. RegisSTRM8	87.2	Gauge	Mineral	98.2%	165 of 168	47 min	4 h
601	West Glacier - MF Flathead RiverMFWM8	87.2	Gauge	Flathead	98.2%	165 of 168	47 min	4 h
602	AshlandTASM8	87.2	Gauge	Rosebud	98.2%	165 of 168	47 min	4 h
603	Tepee Creek SnotelTPEM8	87.2	Gauge	Madison	94.6%	159 of 168	37 min	5 h
604	Clarks Fork Of The Yellowstone AT EdgarEDGM8	87.2	Gauge	Carbon	89.7%	201 of 224	37 min	2 h
604	Milk River 4 SSE HarlemHRLM8	87.2	Gauge	Blaine	89.7%	201 of 224	37 min	2 h
604	Musselshell River AT MusselshellMUSM8	87.2	Gauge	Musselshell	89.7%	201 of 224	37 min	2 h
604	Marias River 6 S ShelbySHLM8	87.2	Gauge	Toole	89.7%	201 of 224	37 min	2 h
608	Beaver Creek SnotelBEVM8	87.1	Gauge	Gallatin	94.0%	158 of 168	37 min	5 h
608	Nevada Ridge SnotelNVRM8	87.1	Gauge	Lewis and Clark	94.0%	158 of 168	37 min	5 h
610	Bitterroot River 4 SW Near MissoulaBITM8	87.0	Gauge	Missoula	97.6%	164 of 168	47 min	4 h
611	Musselshell River 1 SW HarlowtonHLWM8	87.0	Gauge	Wheatland	97.6%	164 of 168	47 min	4 h
612	Boulder River 1 E Big TimberBTMM8	87.0	Gauge	Sweet Grass	95.2%	160 of 168	47 min	3 h
613	Poplar River-East Fork 14 N ScobeyEPRM8	87.0	Gauge	Daniels	89.2%	200 of 224	37 min	2 h
614	Judith RAWSJPKM8	86.9	Gauge	Fergus	100%	168 of 168	15 min	70 min
615	Fort Assiniboine #1 ScanFASM8	86.9	Gauge	Hill	95.2%	160 of 168	37 min	5 h
616	Smiths Creek Raws Near Stevensville 8SwSMTM8	86.8	Gauge	Ravalli	100%	168 of 168	18 min	60 min
617	Big Timber6S0	86.8	Airport	Sweet Grass	74.6%	376 of 504	6 min	60 min
618	Missoula 6 NW WfoMSOM8	86.8	Cooperative	Missoula	74.0%	20 of 27	45 min	12 h
619	Harlem - Milk RiverHMRM8	86.7	Gauge	Blaine	97.0%	163 of 168	47 min	4 h
619	Tongue River 2 S Miles CityMICM8	86.7	Gauge	Custer	97.0%	163 of 168	47 min	4 h
621	Madison River 22 S CameronCMRM8	86.7	Gauge	Madison	88.3%	198 of 224	37 min	2 h
621	Musselshell River 1 S LavinaLVNM8	86.7	Gauge	Golden Valley	88.3%	198 of 224	37 min	2 h
623	Whiskey Creek SnotelWSKM8	86.6	Gauge	Gallatin	95.2%	160 of 168	37 min	5 h
624	Yellowstone River NW GlendiveGLNM8	86.5	Gauge	Dawson	96.4%	162 of 168	47 min	4 h
625	Boulder Mountain SnotelBOMM8	86.5	Gauge	Meagher	94.0%	158 of 168	37 min	6 h
626	Yellowstone River 1 NE BillingsBILM8	86.3	Gauge	Yellowstone	100%	168 of 168	27 min	62 min
627	Apgar - McDonald CreekMCGM8	86.3	Gauge	Flathead	97.6%	164 of 168	47 min	5 h
628	Flaxville - Navajo MT-5REDM8	86.1	Gauge	Daniels	100%	168 of 168	66 min	2 h
629	Choteau 5NE - Teton RiverCHTM8	86.1	Gauge	Teton	100%	168 of 168	81 min	2.3 h
630	Clark Fork River 5 W Below MissoulaBELM8	86.1	Gauge	Missoula	97.0%	163 of 168	47 min	5 h
631	Willow Creek At OppurtunityWCOM8	86.1	Gauge	Deer Lodge	97.0%	163 of 168	47 min	5 h
632	Sidney 2 SSIDM8	86.1	Cooperative	Richland	71.4%	5 of 7	14 min	35.7 h
633	St. MarieSMIM8	86.1	Cooperative	Valley	71.4%	5 of 7	15 min	26 h
634	Ridgeway 1 SRIDM8	86.1	Cooperative	Carter	71.4%	5 of 7	24 min	2 days
635	HardinHDNM8	86.1	Cooperative	Big Horn	71.4%	5 of 7	45 min	26 h
636	SpringdaleSPDM8	86.1	Cooperative	Park	71.4%	5 of 7	65 min	3 days
637	Broadus4BQ	86.1	Cooperative	Powder River	71.4%	5 of 7	74 min	2 days
638	West GlacierWGLM8	86.1	Cooperative	Flathead	71.4%	5 of 7	85 min	2.1 days
639	Melville 4WMVEM8	86.1	Cooperative	Sweet Grass	71.4%	5 of 7	85 min	2 days
640	Trout Creek RsTCRM8	86.1	Cooperative	Sanders	71.4%	5 of 7	1.8 h	28 h
641	Lindbergh LakeLNBM8	86.1	Cooperative	Missoula	71.4%	5 of 7	2.1 h	2 days
642	Gird Point RAWSGPRM8	85.8	Gauge	Ravalli	100%	168 of 168	13 min	60 min
643	Albro Lake SnotelABRM8	85.6	Gauge	Madison	89.8%	151 of 168	37 min	5 h
644	LibbyLBMM8	85.6	Gauge	Lincoln	71.4%	5 of 7	3.4 h	2 days
645	Ennis 8NNEMDBM8	85.5	Gauge	Madison	98.2%	165 of 168	66 min	3 h
646	Alder 6S - Ruby River ResALRM8	84.9	Gauge	Madison	96.4%	162 of 168	81 min	2 h
647	Conrad Ag RcS2117	84.8	Soil	Pondera	94.1%	128 of 136	43 min	7 h
648	TownsendTOWM8	84.7	Cooperative	Broadwater	71.4%	5 of 7	5.4 h	2 days
649	Bozeman 1.5 SSEMT-GN-11	84.5	Volunteer	Gallatin	66.6%	2 of 3	26 min	35 h
650	Poplar 20.4 NMT-RT-5	84.5	Volunteer	Roosevelt	66.6%	2 of 3	86 min	34 h
651	Sheridan 1.4 ENEMT-MD-3	84.5	Volunteer	Madison	66.6%	2 of 3	86 min	35 h
652	Ridge 3.8 NEMT-CT-3	84.5	Volunteer	Carter	66.6%	2 of 3	2.4 h	35 h
652	Roundup 6.2 ENEMT-MH-4	84.5	Volunteer	Musselshell	66.6%	2 of 3	2.4 h	35 h
654	Kalispell 2.5 WNWMT-FH-30	84.5	Volunteer	Flathead	66.6%	2 of 3	2.4 h	34 h
655	Cascade 1.6 NEMT-CC-21	84.5	Volunteer	Cascade	66.6%	2 of 3	2.4 h	35 h
655	Columbus 7.2 EMT-SW-2	84.5	Volunteer	Stillwater	66.6%	2 of 3	2.4 h	35 h
657	Fort Assiniboine #1S2019	84.3	Soil	Hill	94.1%	128 of 136	43 min	7 h
658	Sidney ScanSISM8	84.2	Gauge	Richland	94.6%	159 of 168	37 min	5 h
659	Joliet 2.2 WNWMT-CB-13	84.0	Volunteer	Carbon	66.6%	2 of 3	3.4 h	2 days
659	Chester 0.3 ESEMT-LY-2	84.0	Volunteer	Liberty	66.6%	2 of 3	3.4 h	2 days
661	Florence 3.7 SEMT-RV-5	84.0	Volunteer	Ravalli	66.6%	2 of 3	3.4 h	34 h
662	Roundup 0.3 NEMT-MH-25	84.0	Volunteer	Musselshell	66.6%	2 of 3	3.4 h	2 days
663	Tiber Dam 11.2 ESEMT-LY-25	84.0	Volunteer	Liberty	66.6%	2 of 3	3.4 h	35 h
664	ColstripM46	83.9	Airport	Rosebud	88.8%	448 of 504	6 min	5.3 h
665	Combination SnotelCMBM8	83.6	Gauge	Granite	89.8%	151 of 168	47 min	5 h
665	Crystal Lake SnotelCRYM8	83.6	Gauge	Fergus	89.8%	151 of 168	47 min	5 h
667	Pike Creek SnotelPICM8	83.5	Gauge	Pondera	95.2%	160 of 168	1.6 h	4 h
668	Deadman Creek SnotelDDMM8	83.5	Gauge	Meagher	87.5%	147 of 168	47 min	4 h
669	Chester 6.4 NNWMT-LY-37	83.5	Volunteer	Liberty	66.6%	2 of 3	4.4 h	2 days
670	Bisson Creek SnotelBISM8	83.3	Gauge	Lake	94.6%	159 of 168	1.6 h	4 h
670	Copper Bottom SnotelCOPM8	83.3	Gauge	Lewis and Clark	94.6%	159 of 168	1.6 h	4 h
672	East Boulder Mine SnotelEBMM8	83.2	Gauge	Sweet Grass	86.9%	146 of 168	47 min	4 h
672	Onion Park SnotelONPM8	83.2	Gauge	Meagher	86.9%	146 of 168	47 min	4 h
674	PardeePRDM8	83.1	Gauge	Mineral	99.4%	167 of 168	18 min	2 h
675	Noisy Basin SnotelNOIM8	83.1	Gauge	Flathead	94.0%	158 of 168	1.6 h	4 h
676	Helena 5.8 NEMT-LC-19	83.1	Volunteer	Lewis and Clark	66.6%	2 of 3	5.4 h	24 h
677	Roundup 1.8 NNEMT-MH-18	83.1	Volunteer	Musselshell	66.6%	2 of 3	5.4 h	34 h
678	Billings 1.9 WNWMT-YS-46	83.1	Volunteer	Yellowstone	66.6%	2 of 3	5.4 h	35 h
679	Blacktail Mtn SnotelBLTM8	83.0	Gauge	Flathead	95.8%	161 of 168	1.6 h	5 h
679	Eureka 23SE - 14A17STYM8	83.0	Gauge	Flathead	95.8%	161 of 168	1.6 h	5 h
681	Jordan SCANJRDM8	83.0	Gauge	Garfield	95.8%	161 of 168	1.6 h	5 h
682	Garver Creek SnotelGVRM8	83.0	Gauge	Lincoln	88.1%	148 of 168	47 min	5 h
683	Waldron SnotelCHUM8	82.9	Gauge	Teton	93.4%	157 of 168	1.6 h	4 h
683	S Fork Shields SnotelSFSM8	82.9	Gauge	Park	93.4%	157 of 168	1.6 h	4 h
683	Skalkaho Summit SnotelSKAM8	82.9	Gauge	Granite	93.4%	157 of 168	1.6 h	4 h
683	Tizer Basin SnotelTIBM8	82.9	Gauge	Jefferson	93.4%	157 of 168	1.6 h	4 h
683	Twelvemile Creek SnotelTMCM8	82.9	Gauge	Ravalli	93.4%	157 of 168	1.6 h	4 h
683	Wood Creek SnotelWODM8	82.9	Gauge	Lewis and Clark	93.4%	157 of 168	1.6 h	4 h
689	Lubrecht Flume SnotelLUBM8	82.8	Gauge	Missoula	87.5%	147 of 168	47 min	5 h
689	North Fork Jocko SnotelNFJM8	82.8	Gauge	Missoula	87.5%	147 of 168	47 min	5 h
689	Northeast Entrance SnotelNORM8	82.8	Gauge	Unknown MTC113	87.5%	147 of 168	47 min	5 h
692	ForsythFSYM8	82.8	Cooperative	Rosebud	71.4%	5 of 7	9.6 h	44 h
693	Carrot Basin SnotelCRRM8	82.6	Gauge	Gallatin	94.6%	159 of 168	1.6 h	5 h
694	MoccasinS2119	82.6	Soil	Judith Basin	93.3%	127 of 136	53 min	8 h
695	Grave Creek SnotelGRCM8	82.6	Gauge	Lincoln	86.9%	146 of 168	47 min	5 h
695	Hand Creek SnotelHANM8	82.6	Gauge	Flathead	86.9%	146 of 168	47 min	5 h
695	Placer Basin SnotelPLCM8	82.6	Gauge	Sweet Grass	86.9%	146 of 168	47 min	5 h
698	Tiber 6.5 NWMT-LY-13	82.6	Volunteer	Liberty	66.6%	2 of 3	6.4 h	34 h
699	Cut Bank 0.3 NNWMT-GR-6	82.6	Volunteer	Glacier	66.6%	2 of 3	6.4 h	37 h
700	Table MountainS0808	82.4	Soil	Gallatin	94.1%	128 of 136	53 min	8 h
700	ViolettS2118	82.4	Soil	Liberty	94.1%	128 of 136	53 min	8 h
702	Many Glacier SnotelMANM8	82.4	Gauge	Glacier	86.3%	145 of 168	47 min	5 h
702	Mount Lockhart SnotelMTKM8	82.4	Gauge	Lewis and Clark	86.3%	145 of 168	47 min	5 h
704	LindsayS0581	82.2	Soil	Dawson	93.3%	127 of 136	53 min	8 h
705	Whitlash 13.2 ENEMT-LY-17	81.7	Volunteer	Liberty	66.6%	2 of 3	8.4 h	35 h
706	Billings 1.7 WMT-YS-41	81.7	Volunteer	Yellowstone	66.6%	2 of 3	8.4 h	35 h
707	JordanS2121	81.4	Soil	Garfield	94.1%	128 of 136	1.9 h	7 h
708	Dillon Agrimet StationDWSM8	81.3	Gauge	Beaverhead	100%	168 of 168	27 min	62 min
709	Hoodoo Basin SnotelHOOM8	81.3	Gauge	Mineral	88.6%	149 of 168	1.6 h	4 h
709	Nez Perce Camp SnotelNZCM8	81.3	Gauge	Ravalli	88.6%	149 of 168	1.6 h	4 h
711	Wilsall 0.3 NWMT-PK-5	81.2	Volunteer	Park	66.6%	2 of 3	9.4 h	35 h
712	Bynum 4 SseBYNM8	81.1	Cooperative	Teton	57.1%	4 of 7	25 min	3 days
713	AnacondaANAM8	81.1	Cooperative	Deer Lodge	57.1%	4 of 7	35 min	2.1 days
714	Powderville 8 NNEPOWM8	81.1	Cooperative	Custer	57.1%	4 of 7	2.2 h	3 days
715	Banfield Mountain SnotelBANM8	81.0	Gauge	Lincoln	88.1%	148 of 168	1.6 h	4 h
716	Flattop Mtn. SnotelFTMM8	81.0	Gauge	Flathead	88.1%	148 of 168	1.6 h	4 h
717	St. Marie MT-24 MP 18.0MTSTM	81.0	Road	Valley	70.3%	473 of 672	28 min	2 h
718	Blue Moon US-2 MP 133.9MTBMN	80.9	Road	Flathead	70.3%	473 of 672	29 min	2 h
718	Lolo North US-93 MP 87.0MTLLN	80.9	Road	Missoula	70.3%	473 of 672	29 min	2 h
720	Monument Peak SnotelMNPM8	80.8	Gauge	Park	87.5%	147 of 168	1.6 h	4 h
721	Bonner I-90 MP 110.3MTBON	80.8	Road	Missoula	70.2%	472 of 672	29 min	2 h
721	Spokane Creek US-287 MP 55.7MTSPK	80.8	Road	Jefferson	70.2%	472 of 672	29 min	2 h
721	Sweeney Creek I-94 MP 112.6MTSWC	80.8	Road	Rosebud	70.2%	472 of 672	29 min	2 h
724	Basin Creek SnotelBSCM8	80.7	Gauge	Madison	95.2%	160 of 168	37 min	5 h
725	Rocky Boy SnotelROCM8	80.7	Gauge	Hill	79.7%	134 of 168	47 min	4 h
726	Dell - JL Meadow SNOTELJLMM8	80.6	Gauge	Beaverhead	86.9%	146 of 168	1.6 h	4 h
727	Poorman Creek SnotelPMNM8	80.5	Gauge	Lincoln	79.1%	133 of 168	47 min	4 h
728	Shower Falls SnotelSHFM8	80.4	Gauge	Gallatin	86.3%	145 of 168	1.6 h	4 h
729	Daly Creek SnotelDALM8	80.4	Gauge	Ravalli	86.3%	145 of 168	1.6 h	4 h
729	Kraft Creek SnotelKRCM8	80.4	Gauge	Missoula	86.3%	145 of 168	1.6 h	4 h
729	N Fk Elk Creek SnotelNFEM8	80.4	Gauge	Powell	86.3%	145 of 168	1.6 h	4 h
732	AugustaAUGM8	80.4	Cooperative	Lewis & Clark	57.1%	4 of 7	3.9 h	34 h
733	Helena Valley Weather StationHVMM8	80.3	Gauge	Lewis & Clark	100%	168 of 168	27 min	62 min
734	Comertown Turn-Off MT-5 MP 13.4 MT US MT DOTMTCOM	80.3	Road	Sheridan	70.3%	473 of 672	29 min	2 h
735	Whitlash 5.6 NEMT-LY-18	80.3	Volunteer	Liberty	66.6%	2 of 3	11.4 h	34 h
736	Clover Meadow SnotelCMDM8	80.2	Gauge	Madison	85.7%	144 of 168	1.6 h	4 h
736	Darkhorse Lake SnotelDHLM8	80.2	Gauge	Beaverhead	85.7%	144 of 168	1.6 h	4 h
738	Warm Springs SnotelWRMM8	80.0	Gauge	Granite	85.1%	143 of 168	1.6 h	4 h
739	Anaconda 10.6 WNWMT-DL-4	79.8	Volunteer	Deer Lodge	66.6%	2 of 3	12.4 h	33 h
740	ZortmanZRTM8	79.5	Cooperative	Phillips	57.1%	4 of 7	5.9 h	2 days
741	Bozeman Agrimet StationBWSM8	79.4	Gauge	Gallatin	100%	168 of 168	27 min	62 min
742	Noxon 4.2 WNWMT-SN-2	79.4	Volunteer	Sanders	66.6%	2 of 3	13.4 h	34 h
742	Columbus 6.0 SSEMT-SW-13	79.4	Volunteer	Stillwater	66.6%	2 of 3	13.4 h	34 h
744	East Livingston I-90 MP 337.7MTELV	79.3	Road	Park	70.2%	472 of 672	29 min	2 h
745	Valier Jct 1-15 MP 347.0MTVAR	79.1	Road	Pondera	70.3%	473 of 672	28 min	2 h
746	SidneyS2120	79.0	Soil	Richland	92.6%	126 of 136	53 min	8 h
747	Spur Park SnotelSPRM8	79.0	Gauge	Judith Basin	80.3%	135 of 168	57 min	4 h
747	Stahl Peak SnotelSTAM8	79.0	Gauge	Lincoln	80.3%	135 of 168	57 min	4 h
749	Lambert MT-200 MP 45.0MTLBT	79.0	Road	Richland	70.3%	473 of 672	28 min	2 h
750	Glasgow Weather StationGWSM8	78.9	Gauge	Valley	100%	168 of 168	27 min	62 min

How a station is ranked

The 247 Rank answers one question about a weather station: can its readings be relied on? A station has to deliver: its reports arrive when due, soon, without long silences. And its readings have to be right: close to a trusted station nearby, passing their checks, and in step with the weather the forecast and its neighbours confirm.

The 247 score

Storm Station's poller asks every network on its own schedule, around the clock, and keeps the time of every report it hears; the reference comparison and the forecast engine keep the rest. From the last seven days of that record each station is scored out of 100 on six parts, and its 247 score is their weighted mean:

Reports receivedweight 35The share of its scheduled reports received. A station that sends every 5 minutes is due 2,016 reports in a week; one that reports once a day is due 7. Each report is counted in a slot centred on the station's own report time, so a report a minute early or late is still on time, and the week ends an hour back, so a report still on its way is never counted missed.Full marks: 100% received. No marks: none received.
Arrivalweight 10The median time its reports took to arrive from the moment a reading was taken to the moment it reached Storm Station.Full marks: within 10 minutes, or a tenth of its schedule for a station that reports less often. No marks: an hour, or its whole schedule.
Continuityweight 10Its longest silence against its own schedule, so a daily gauge is not marked down for a day between reports.Full marks: a silence of 3 reports or less. No marks: 72 reports, falling evenly on a log scale between.
Accuracyweight 20How closely its temperature follows its reference station the nearest airport or climate reference station that reported within half an hour, up to 15 miles away, reading by reading. A steady offset is taken out, and where both heights are known only the offset beyond 3 F that the height difference does not explain is counted.Full marks: within 1.5 F, allowing 0.1 F more for each mile to the reference. No marks: 6.5 F beyond that.
Instrument checksweight 15The share of its readings that pass a check. For an airfield, the check the forecast engine runs the next day: each reading against the stations around it, as weather services check their own. For any other station, a reading 20 F or more from its reference fails, unless the two stand 3,000 ft or more apart.Full marks: none failed. No marks: 5% failed.
Forecast checkweight 10How closely its temperature matched Storm Station's forecast for the same hours, checked the next day, for every airfield the forecast engine scores. A station whose readings stray far from a forecast its neighbours confirm is one to doubt.Full marks: within 2 F on average. No marks: 8 F.

A part is scored once the week holds 24 readings or comparisons for it. A part that cannot be measured where a station stands counts at the middle of its state's measured stations, so the station is neither lifted nor sunk by it. A part measured nowhere in the state is left out, and the others carry its weight.

From score to rank

Each state's stations are ranked by their score, to the tenth. At an equal score the longer record comes first: a station that sent 2,016 of 2,016 reports has shown more than one that sent 7 of 7. Then the faster arrival, then the shorter silence. Ties on all of them share a rank, as a race is scored: three stations tied for third are all third, and the next is sixth.

A station is ranked once its week holds enough reports to measure: 12, or 3 days for a gauge that reports once a day. The rank is made again every day, so a station that falls silent or starts to read wrong drops, and one that recovers climbs back. Every page shows the same ranking: a station's rank here, in its state's list and on its own page come from one run, and a new run reaches them together. Each station's page shows its score part by part, with the figures behind each.

The same figures as data

/api/ranks for a state and /api/rank for one station, its score in parts; the developer page has every field.