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.

1,053 stations ranked32.0% sent every report dueranked October 16, 2026page 3 of 5Montana 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 1,053 ranked here, 965 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	Eureka 1N - Ranger StnERKM8	91.4	Gauge	Lincoln	98.8%	166 of 168	27 min	1.5 h
501	StevensvilleSTEM8	91.4	Gauge	Ravalli	98.8%	166 of 168	27 min	1.5 h
503	Bitterroot River 4 SE Near DarbyDARM8	91.4	Gauge	Ravalli	97.0%	163 of 168	24 min	2 h
504	Sundance - Cut BankBNKM8	91.4	Gauge	Glacier	97.0%	163 of 168	24 min	2 h
504	Madison River 4 NW CameronCMNM8	91.4	Gauge	Madison	97.0%	163 of 168	24 min	2 h
504	Silver BowSLVM8	91.4	Gauge	Silver Bow	97.0%	163 of 168	24 min	2 h
507	Red Rock River 11 E Red Rock Rive Below Lima Reservoir Near MoniLRBM8	91.3	Gauge	Beaverhead	99.4%	167 of 168	29 min	2 h
507	Red Rock River 11 E Lima Reservoir DCPLRRM8	91.3	Gauge	Beaverhead	99.4%	167 of 168	29 min	2 h
509	Clark Fork River 1 W At Deer LodgeDLGM8	91.3	Gauge	Powell	99.4%	167 of 168	29 min	2 h
509	Roscoe 3SSW - E Rosebud CreekERCM8	91.3	Gauge	Carbon	99.4%	167 of 168	29 min	2 h
509	Clark Fork River 2 S Clark Fork GalenGALM8	91.3	Gauge	Deer Lodge	99.4%	167 of 168	29 min	2 h
509	Sun River 25 NW Augusta 25NWNFSM8	91.3	Gauge	Teton	99.4%	167 of 168	29 min	2 h
509	Flathead River 13 NE PermaPERM8	91.3	Gauge	Sanders	99.4%	167 of 168	29 min	2 h
509	Red Rock River 9 E LakeviewRRLM8	91.3	Gauge	Beaverhead	99.4%	167 of 168	29 min	2 h
509	Willow Creek Feeder CanalWCFM8	91.3	Gauge	Lewis & Clark	99.4%	167 of 168	29 min	2 h
516	Darby Ranger StnDRBM8	91.3	Gauge	Ravalli	99.4%	167 of 168	29 min	2 h
516	Swan River 5 SE Near BigforkSWRM8	91.3	Gauge	Lake	99.4%	167 of 168	29 min	2 h
518	Moccasin AgrimetMCWM8	91.3	Gauge	Judith Basin	98.2%	165 of 168	29 min	2 h
519	Willow Ck RsvrWLLM8	91.2	Gauge	Lewis & Clark	99.4%	167 of 168	29 min	2 h
520	Whiskey Creek SnotelWSKM8	91.2	Gauge	Gallatin	98.8%	166 of 168	39 min	2 h
521	Lincoln 1E - Rngr StnLINM8	91.2	Gauge	Lewis and Clark	98.2%	165 of 168	27 min	2 h
522	Mission Creek Above Mission ReservoirMSNM8	91.2	Gauge	Lake	96.4%	162 of 168	24 min	2 h
522	W.F.Bitterroot River 17 SW Bitterroot Nr ConnerWFBM8	91.2	Gauge	Ravalli	96.4%	162 of 168	24 min	2 h
524	Fp.Shaw Diversion Dam NrSHWM8	91.2	Gauge	Lewis & Clark	93.4%	157 of 168	14 min	4 h
525	Ovando - Monture CreekMNTM8	91.1	Gauge	Missoula	98.8%	166 of 168	29 min	2 h
525	Jefferson River 7 NNE Silver StarPBRM8	91.1	Gauge	Madison	98.8%	166 of 168	29 min	2 h
527	Sun River 1 N SimmsSSRM8	91.1	Gauge	Teton	98.8%	166 of 168	29 min	3 h
528	Sun River 3 SE VaughnVAUM8	91.1	Gauge	Cascade	98.8%	166 of 168	29 min	3 h
529	Judith River 6 SW UticaJRUM8	91.1	Gauge	Judith Basin	95.8%	161 of 168	19 min	4 h
530	Mosby - Flatwillow CreekMFLM8	91.1	Gauge	Petroleum	95.8%	161 of 168	19 min	4 h
531	Pleasant Valley 5 SEPLVM8	91.0	Gauge	Flathead	98.8%	166 of 168	29 min	2 h
532	Harlem Secondary Canal Near Harlem 3SseHSCM8	91.0	Gauge	Blaine	98.2%	165 of 168	28 min	2 h
532	Kootenai River E Below Libby Dam Near LibbyKBDM8	91.0	Gauge	Lincoln	98.2%	165 of 168	28 min	2 h
532	Mill Creek Near AnacondaMCAM8	91.0	Gauge	Deer Lodge	98.2%	165 of 168	28 min	2 h
532	Nelson ReservoirNLSM8	91.0	Gauge	Phillips	98.2%	165 of 168	28 min	2 h
532	Swiftcurrent Creek 5 SW Babb Lake SherburneSBUM8	91.0	Gauge	Glacier	98.2%	165 of 168	28 min	2 h
532	Willow Creek Near AnacondaWCAM8	91.0	Gauge	Deer Lodge	98.2%	165 of 168	28 min	2 h
538	Dodson Pumps CanalDPCM8	91.0	Gauge	Phillips	98.2%	165 of 168	28 min	2 h
538	Nelson South Canal Near Saco 10NwNSCM8	91.0	Gauge	Phillips	98.2%	165 of 168	28 min	2 h
540	S. Fork Jocko River 12 NE South Fork JockoARLM8	91.0	Gauge	Lake	95.8%	161 of 168	24 min	3 h
541	EnnisENNM8	90.9	Gauge	Madison	98.8%	166 of 168	13 min	2 h
542	Philipsburg 2SPHIM8	90.9	Gauge	Granite	98.2%	165 of 168	29 min	1.5 h
543	WF Poplar RiverBDPM8	90.9	Gauge	Daniels	98.2%	165 of 168	29 min	2 h
543	Grove Gul - Blacktail CreekBKCM8	90.9	Gauge	Silver Bow	98.2%	165 of 168	29 min	2 h
543	Boulder Creek At MaxvilleBMXM8	90.9	Gauge	Granite	98.2%	165 of 168	29 min	2 h
543	WILLOW CREEK 8 W BoydBOYM8	90.9	Gauge	Carbon	98.2%	165 of 168	29 min	2 h
543	Fort Belknap Canal Main DiversionFBCM8	90.9	Gauge	Blaine	98.2%	165 of 168	29 min	2 h
543	St Mary Canal At Martins BridgeMTBM8	90.9	Gauge	Glacier	98.2%	165 of 168	29 min	2 h
543	Seeley Lake RsSELM8	90.9	Gauge	Missoula	98.2%	165 of 168	29 min	2 h
543	SummitSUMM8	90.9	Gauge	Flathead	98.2%	165 of 168	29 min	2 h
543	Bitterroot River 1 NE At Bell Crossing Near VictorVICM8	90.9	Gauge	Ravalli	98.2%	165 of 168	29 min	2 h
552	BIG HORN LAKE AT Yellowtail DamBHRM8	90.9	Gauge	Big Horn	98.2%	165 of 168	29 min	2 h
552	Muddy Creek AT VaughnMDYM8	90.9	Gauge	Cascade	98.2%	165 of 168	29 min	2 h
552	Milk River 1 SW NashuaNSHM8	90.9	Gauge	Valley	98.2%	165 of 168	29 min	2 h
552	Marias River 15 SSW Chester Tiber Dam CoopTBRM8	90.9	Gauge	Liberty	98.2%	165 of 168	29 min	2 h
556	Gallatin River 1 W LoganLOGM8	90.9	Gauge	Gallatin	98.2%	165 of 168	29 min	3 h
557	Emigrant 4NE - Mill CreekMIKM8	90.8	Gauge	Park	95.2%	160 of 168	24 min	3 h
558	Ruby River 8 WNW Ruby River near Harrington near Silver StarRRHM8	90.7	Gauge	Madison	97.6%	164 of 168	28 min	2 h
559	Shields River 7 NE LivingstonSLDM8	90.6	Gauge	Park	99.4%	167 of 168	32 min	2 h
560	Augusta 24NW - North Fork Sun River Near AugustaANFM8	90.6	Gauge	Glacier	97.6%	164 of 168	29 min	2 h
561	WEST ROSEBUD CREEK 14 SW RoscoeWRDM8	90.5	Gauge	Stillwater	99.4%	167 of 168	33 min	2 h
562	Missouri River 15 NE Helena below Hauser RsvrHASM8	90.5	Gauge	Lewis & Clark	97.0%	163 of 168	28 min	3 h
563	Babb - Swift Current CreekSCSM8	90.5	Gauge	Glacier	97.0%	163 of 168	28 min	2 h
564	Flint Creek Near DrummondFCKM8	90.4	Gauge	Granite	98.8%	166 of 168	32 min	2 h
565	Warm Springs Creek 1 NE Near AnacondaANDM8	90.3	Gauge	Deer Lodge	99.4%	167 of 168	29 min	2 h
566	Clear Creek 7 W ChinookCCMM8	90.3	Gauge	Blaine	98.2%	165 of 168	27 min	4 h
567	Armells Ck RAWS NrARMM8	90.3	Gauge	Fergus	96.4%	162 of 168	18 min	6 h
568	Dodson 6SW - Peoples CreekKHRM8	90.3	Gauge	Phillips	96.4%	162 of 168	24 min	4 h
569	Moccasin ScanMSCM8	90.2	Gauge	Judith Basin	99.4%	167 of 168	39 min	2 h
570	Ruby River Valley-Laurin, MT (RBYM)USBR-RBYM	90.2	Gauge	Madison	98.8%	166 of 168	33 min	2 h
570	Toston, MT (TOSM)USBR-TOSM	90.2	Gauge	Broadwater	98.8%	166 of 168	33 min	2 h
570	White Sulphur Springs, MT (WSSM)USBR-WSSM	90.2	Gauge	Meagher	98.8%	166 of 168	33 min	2 h
573	Great Falls AirportGTF	90.2	Gauge	Cascade	85.7%	24 of 28	30 min	12 h
574	StanfordSTNM8	90.2	Cooperative	Judith Basin	85.7%	6 of 7	7 min	24.1 h
575	Melville 4WMVEM8	90.2	Cooperative	Sweet Grass	85.7%	6 of 7	17 min	24.1 h
576	Grass RangeGSSM8	90.2	Cooperative	Fergus	85.7%	6 of 7	17 min	24.1 h
577	Ridgeway 1 SRIDM8	90.2	Cooperative	Carter	85.7%	6 of 7	25 min	24.1 h
578	ValentineVALM8	90.2	Cooperative	Fergus	85.7%	6 of 7	27 min	47.5 h
579	ChoteauCOUM8	90.2	Cooperative	Teton	85.7%	6 of 7	37 min	25.5 h
580	Broadus4BQ	90.2	Cooperative	Powder River	85.7%	6 of 7	67 min	25.1 h
581	SpringdaleSPDM8	90.2	Cooperative	Park	85.7%	6 of 7	77 min	2 days
582	Sun River 4 SSNRM8	90.2	Cooperative	Cascade	85.7%	6 of 7	77 min	24 h
583	Sheridan 1.4 ENEMT-MD-3	90.2	Volunteer	Madison	85.7%	6 of 7	85 min	35.1 h
584	Kalispell 2.6 NEMT-FH-29	90.2	Volunteer	Flathead	85.7%	6 of 7	85 min	2 days
585	Seeley Lake 1.2 EMT-MS-26	90.2	Volunteer	Missoula	85.7%	6 of 7	86 min	38.1 h
585	Clinton 11.1 SSEMT-MS-34	90.2	Volunteer	Granite	85.7%	6 of 7	86 min	38.1 h
587	Marion 1.1 SEMT-FH-12	90.2	Volunteer	Flathead	85.7%	6 of 7	86 min	35.1 h
588	Plevna 1.6 SMT-FL-7	90.2	Volunteer	Fallon	85.7%	6 of 7	86 min	2 days
588	Volborg 17.7 SWMT-PR-16	90.2	Volunteer	Powder River	85.7%	6 of 7	86 min	2 days
590	Kalispell 2.5 WNWMT-FH-30	90.2	Volunteer	Flathead	85.7%	6 of 7	86 min	24 h
591	Heron 2NWHERM8	90.2	Cooperative	Sanders	85.7%	6 of 7	1.6 h	24.1 h
592	BrandenbergBDBM8	90.2	Cooperative	Rosebud	85.7%	6 of 7	2 h	24.1 h
593	Chinook 11SCIKM8	90.2	Gauge	Blaine	85.7%	6 of 7	2.3 h	2 days
594	Columbus 7.2 EMT-SW-2	90.2	Volunteer	Stillwater	85.7%	6 of 7	2.4 h	35.1 h
595	Anaconda 7.4 NWMT-DL-1	90.2	Volunteer	Deer Lodge	85.7%	6 of 7	2.4 h	35.1 h
596	Polson Kerr DamKERM8	90.2	Cooperative	Lake	85.7%	6 of 7	2.4 h	26 h
597	Jefferson River 3 NW Three ForksTFKM8	90.0	Gauge	Broadwater	98.2%	165 of 168	29 min	4 h
598	Missouri River AT Fort BentonFBNM8	90.0	Gauge	Chouteau	97.6%	164 of 168	29 min	5 h
599	Zurich Main DiversionZRDM8	89.9	Gauge	Blaine	94.6%	159 of 168	14 min	7 h
600	LibbyLBMM8	89.9	Gauge	Lincoln	85.7%	6 of 7	3 h	25.1 h
601	Rudyard 21NRDYM8	89.9	Cooperative	Hill	85.7%	6 of 7	3.1 h	35.1 h
602	Madison River 2 E West YellowstoneMDSM8	89.8	Gauge	Gallatin	100%	168 of 168	29 min	60 min
603	Belt Creek 9 NNW MonarchBTCM8	89.8	Gauge	Cascade	97.0%	163 of 168	24 min	5 h
604	Missouri River 1 SW Virgelle Ferry Landing DCPVRGM8	89.7	Gauge	Chouteau	97.0%	165 of 170	29 min	3.8 h
605	BIGHORN RIVER 14 W St. XavierSTXM8	89.7	Gauge	Big Horn	95.2%	160 of 168	14 min	8 h
606	Wise River 0 AT Wise River at Wise RiverWZRM8	89.7	Gauge	Granite	94.6%	159 of 168	24 min	4 h
607	Columbus 8.2 ESEMT-SW-10	89.7	Volunteer	Stillwater	85.7%	6 of 7	3.4 h	35.1 h
608	Whitefish 4.9 WMT-FH-40	89.7	Volunteer	Flathead	85.7%	6 of 7	3.4 h	2 days
609	Missouri River 20 S LanduskyLDKM8	89.6	Gauge	Fergus	97.0%	163 of 168	28 min	4 h
610	Bozeman Agrimet StationBWSM8	89.3	Gauge	Gallatin	100%	168 of 168	29 min	63 min
611	Roundup 0.3 NEMT-MH-25	89.3	Volunteer	Musselshell	85.7%	6 of 7	4.4 h	2 days
612	Billings 4.5 NEMT-YS-14	89.3	Volunteer	Yellowstone	85.7%	6 of 7	4.4 h	34.1 h
613	Ismay 3.4 NEMT-CS-11	89.3	Volunteer	Custer	85.7%	6 of 7	4.4 h	2 days
614	Missoula 3.8 SSWMT-MS-33	89.3	Volunteer	Missoula	85.7%	6 of 7	4.4 h	34.1 h
615	Conrad Ag Rc ScanCOAM8	89.2	Gauge	Pondera	99.4%	167 of 168	39 min	2 h
615	Table Mountain SnotelTABM8	89.2	Gauge	Gallatin	99.4%	167 of 168	39 min	2 h
615	Violett ScanVIOM8	89.2	Gauge	Liberty	99.4%	167 of 168	39 min	2 h
618	Livingston 12SLVGM8	89.2	Cooperative	Park	85.7%	6 of 7	4.6 h	24.1 h
619	Badger Pass SnotelBADM8	89.1	Gauge	Pondera	98.8%	166 of 168	39 min	2 h
619	Hot Springs 21NNW - Bassoo PeakBASM8	89.1	Gauge	Sanders	98.8%	166 of 168	39 min	2 h
619	Beagle Springs SnotelBEAM8	89.1	Gauge	Beaverhead	98.8%	166 of 168	39 min	2 h
619	Black Pine SnotelBLKM8	89.1	Gauge	Granite	98.8%	166 of 168	39 min	2 h
619	Burnt Mtn SnotelBMTM8	89.1	Gauge	Carbon	98.8%	166 of 168	39 min	2 h
619	Box Canyon SnotelBOXM8	89.1	Gauge	Park	98.8%	166 of 168	39 min	2 h
619	Noxon - Chicago RidgeCHIM8	89.1	Gauge	Sanders	98.8%	166 of 168	39 min	2 h
619	Cole Creek SnotelCLCM8	89.1	Gauge	Carbon	98.8%	166 of 168	39 min	2 h
619	Calvert Creek SnotelCLVM8	89.1	Gauge	Deer Lodge	98.8%	166 of 168	39 min	2 h
619	Copper Camp SnotelCPCM8	89.1	Gauge	Lewis and Clark	98.8%	166 of 168	39 min	2 h
619	Daisy Peak SnotelDAZM8	89.1	Gauge	Meagher	98.8%	166 of 168	39 min	2 h
619	Dupuyer Creek SnotelDPYM8	89.1	Gauge	Teton	98.8%	166 of 168	39 min	2 h
619	Emery Creek SnotelEMCM8	89.1	Gauge	Flathead	98.8%	166 of 168	39 min	2 h
619	Frohner Meadow SnotelFRHM8	89.1	Gauge	Jefferson	98.8%	166 of 168	39 min	2 h
619	Fisher Creek SnotelFSHM8	89.1	Gauge	Park	98.8%	166 of 168	39 min	2 h
619	Hawkins Lake SnotelHAWM8	89.1	Gauge	Lincoln	98.8%	166 of 168	39 min	2 h
619	Lick Creek SnotelLCKM8	89.1	Gauge	Gallatin	98.8%	166 of 168	39 min	2 h
619	Lemhi Ridge SnotelLMHM8	89.1	Gauge	Beaverhead	98.8%	166 of 168	39 min	2 h
619	Lakeview Ridge SnotelLVRM8	89.1	Gauge	Beaverhead	98.8%	166 of 168	39 min	2 h
619	Lower Twin SnotelLWTM8	89.1	Gauge	Madison	98.8%	166 of 168	39 min	2 h
619	Mule Creek SnotelMULM8	89.1	Gauge	Beaverhead	98.8%	166 of 168	39 min	2 h
619	Nevada Ridge SnotelNVRM8	89.1	Gauge	Lewis and Clark	98.8%	166 of 168	39 min	2 h
619	Pickfoot Creek SnotelPCKM8	89.1	Gauge	Meagher	98.8%	166 of 168	39 min	2 h
619	Peterson Meadows SnotelPTNM8	89.1	Gauge	Granite	98.8%	166 of 168	39 min	2 h
619	Rocker Peak SnotelRKPM8	89.1	Gauge	Jefferson	98.8%	166 of 168	39 min	2 h
619	Saddle Mtn. SnotelSDMM8	89.1	Gauge	Ravalli	98.8%	166 of 168	39 min	2 h
619	Short Creek SnotelSHCM8	89.1	Gauge	Madison	98.8%	166 of 168	39 min	2 h
619	Jackson - Slagamelt LakesSLMM8	89.1	Gauge	Beaverhead	98.8%	166 of 168	39 min	2 h
619	Sleeping Woman SnotelSQPM8	89.1	Gauge	Sanders	98.8%	166 of 168	39 min	2 h
619	Tepee Creek SnotelTPEM8	89.1	Gauge	Madison	98.8%	166 of 168	39 min	2 h
619	Twin Lakes SnotelTWLM8	89.1	Gauge	Ravalli	98.8%	166 of 168	39 min	2 h
619	White Mill SnotelWHTM8	89.1	Gauge	Park	98.8%	166 of 168	39 min	2 h
651	Simms 1 NeSMMM8	89.1	Cooperative	Cascade	96.4%	162 of 168	34 min	3 h
652	Harlem - Alfalfa Valley Canal DiversionAVCM8	89.1	Gauge	Blaine	92.2%	155 of 168	14 min	7 h
653	Lindsay 1 ScanLDSM8	89.0	Gauge	Dawson	98.8%	166 of 168	39 min	2 h
654	Rock Creek 21 NW OpheimORHM8	89.0	Gauge	Valley	94.0%	158 of 168	17 min	7 h
655	Combination SnotelCMBM8	88.9	Gauge	Granite	98.2%	165 of 168	39 min	2 h
655	Divide SnotelDIVM8	88.9	Gauge	Madison	98.2%	165 of 168	39 min	2 h
657	Helena AP ASOSHLN	88.9	Gauge	Lewis & Clark	82.1%	23 of 28	38 min	12 h
657	Harve AirportHVR	88.9	Gauge	Hill	82.1%	23 of 28	38 min	12 h
659	Chinook - Lodge CreekCRKM8	88.8	Gauge	Blaine	97.0%	163 of 168	29 min	5 h
660	Whitlash 13.2 ENEMT-LY-17	88.8	Volunteer	Liberty	85.7%	6 of 7	5.4 h	2 days
661	Como Dam And RsvrHMTM8	88.7	Gauge	Ravalli	99.4%	167 of 168	29 min	2 h
662	Crystal Lake SnotelCRYM8	88.7	Gauge	Fergus	97.6%	164 of 168	39 min	2 h
663	Boulder Mountain SnotelBOMM8	88.4	Gauge	Meagher	97.0%	163 of 168	39 min	2 h
664	Whitlash 13.5 EMT-LY-19	88.3	Volunteer	Liberty	85.7%	6 of 7	6.4 h	35.1 h
665	Boulder 0.3 EMT-JF-1	88.3	Volunteer	Jefferson	85.7%	6 of 7	6.4 h	34.1 h
666	Judith RAWSJPKM8	88.2	Gauge	Fergus	100%	168 of 168	17 min	71 min
667	BIG MUDDY CREEK 5 W CulbertsonCBMM8	88.2	Gauge	Sheridan	99.4%	167 of 168	44 min	2 h
668	Fort Assiniboine #1 ScanFASM8	88.2	Gauge	Hill	98.8%	166 of 168	39 min	2 h
669	Conrad Ag RcS2117	88.2	Soil	Pondera	98.8%	166 of 168	43 min	2 h
670	Sidney ScanSISM8	88.2	Gauge	Richland	95.8%	161 of 168	39 min	2 h
671	BNGM8BNGM8	88.2	DCP	-	85.7%	6 of 7	6.7 h	2 days
671	LGGM8LGGM8	88.2	DCP	-	85.7%	6 of 7	6.7 h	2 days
673	Twin Bridges 5N - Jefferson RiverTWJM8	88.0	Gauge	Madison	98.8%	166 of 168	44 min	2 h
674	Wolf Point 34 NE94059	87.9	Reference	Roosevelt	100%	84 of 84	1.5 h	3.1 h
674	Wolf Point 29 ENE94060	87.9	Reference	Roosevelt	100%	84 of 84	1.5 h	3.1 h
676	Dillon 18 WSW04137	87.9	Reference	Beaverhead	100%	84 of 84	1.5 h	3.1 h
676	Lewistown 42 WSW04140	87.9	Reference	Judith Basin	100%	84 of 84	1.5 h	3.1 h
678	Power - Tank CouleeTCPM8	87.9	Gauge	Teton	92.8%	156 of 168	14 min	11 h
679	Paridise Valley Main DiversionPRVM8	87.9	Gauge	Blaine	91.0%	153 of 168	14 min	9 h
680	Fromberg 2.7 NEMT-CB-12	87.9	Volunteer	Carbon	85.7%	6 of 7	7.4 h	24 h
681	Bozeman, MT (BOZM)USBR-BOZM	87.8	Gauge	Gallatin	98.8%	166 of 168	33 min	2 h
682	LindsayS0581	87.8	Soil	Dawson	98.8%	166 of 168	45 min	2 h
683	Albro Lake SnotelABRM8	87.8	Gauge	Madison	95.2%	160 of 168	39 min	2.1 h
684	Beaver Creek SnotelBEVM8	87.8	Gauge	Gallatin	95.2%	160 of 168	39 min	3 h
685	FlatwillowFLWM8	87.8	Gauge	Petroleum	91.6%	154 of 168	14 min	10 h
686	Peoples Creek 16 N HaysPEOM8	87.7	Gauge	Blaine	95.2%	160 of 168	24 min	8 h
687	MoccasinS2119	87.6	Soil	Judith Basin	100%	168 of 168	52 min	63 min
688	Fire Effects RAWS 2MOMM8	87.6	Gauge	Missoula	99.4%	167 of 168	13 min	2 h
689	West Glacier - MF Flathead RiverMFWM8	87.4	Gauge	Flathead	100%	168 of 168	49 min	75 min
689	Willow Creek At OppurtunityWCOM8	87.4	Gauge	Deer Lodge	100%	168 of 168	49 min	75 min
691	Musselshell River 1 SW HarlowtonHLWM8	87.4	Gauge	Wheatland	100%	168 of 168	49 min	63 min
691	Milk River AT MaltaMALM8	87.4	Gauge	Phillips	100%	168 of 168	49 min	63 min
693	Ennis Lake near McAllisterMADM8	87.4	Gauge	Madison	100%	168 of 168	49 min	63 min
694	Missouri River 2 SE TostonTOSM8	87.4	Gauge	Broadwater	94.6%	159 of 168	29 min	6 h
695	Plains 5.2 NMT-SN-5	87.4	Volunteer	Sanders	85.7%	6 of 7	8.4 h	2 days
696	Moorhead 9 NEMORM8	87.3	Cooperative	Powder River	85.7%	6 of 7	8.6 h	24.1 h
697	Yankee Flat RAWSYNKM8	87.2	Gauge	Deer Lodge	99.4%	167 of 168	19 min	2 h
698	Bitterroot River 4 SW Near MissoulaBITM8	87.2	Gauge	Missoula	99.4%	167 of 168	49 min	2 h
699	Apgar - McDonald CreekMCGM8	87.2	Gauge	Flathead	99.4%	167 of 168	49 min	2 h
700	Clark Fork River 5 W Below MissoulaBELM8	87.2	Gauge	Missoula	99.4%	167 of 168	49 min	2 h
700	St. Regis River 1 W At St. RegisSTRM8	87.2	Gauge	Mineral	99.4%	167 of 168	49 min	2 h
702	Yellowstone River NW GlendiveGLNM8	87.2	Gauge	Dawson	99.4%	167 of 168	49 min	2 h
702	Yellowstone River 5 S LivingstonLIVM8	87.2	Gauge	Park	99.4%	167 of 168	49 min	2 h
702	Musselshell River 2 SW RoundupRUPM8	87.2	Gauge	Musselshell	99.4%	167 of 168	49 min	2 h
705	Harlem - Milk RiverHMRM8	87.2	Gauge	Blaine	99.4%	167 of 168	49 min	63 min
706	Fort Assiniboine #1S2019	87.1	Soil	Hill	98.2%	165 of 168	43 min	2 h
707	AshlandTASM8	87.0	Gauge	Rosebud	98.8%	166 of 168	49 min	2 h
708	Absarokee 3NEABSM8	86.9	Cooperative	Stillwater	98.8%	166 of 168	49 min	2 h
709	Boulder River 1 E Big TimberBTMM8	86.8	Gauge	Sweet Grass	98.2%	165 of 168	49 min	2 h
710	Beaver Creek 3 W HinsdaleBCHM8	86.8	Gauge	Valley	92.8%	156 of 168	29 min	6 h
711	Table MountainS0808	86.7	Soil	Gallatin	100%	168 of 168	53 min	63 min
712	Judith River 15 NW Winifred Judith Mouth DCPJDRM8	86.7	Gauge	Fergus	92.2%	155 of 168	24 min	8 h
713	ViolettS2118	86.5	Soil	Liberty	99.4%	167 of 168	53 min	2 h
714	Silver Bow Ck AtWMSM8	86.5	Gauge	Deer Lodge	92.2%	155 of 168	32 min	5 h
715	Tiber 6.5 NWMT-LY-13	86.5	Volunteer	Liberty	85.7%	6 of 7	10.4 h	34.1 h
716	Ronanairport7S0	86.4	Airport	Lake	99.6%	502 of 504	8 min	40 min
717	Tongue River 2 S Miles CityMICM8	86.4	Gauge	Custer	97.0%	163 of 168	49 min	2 h
718	Big Spring Creek 2 NW Lewistown near R&B Trading PostLTPM8	86.2	Gauge	Fergus	89.8%	151 of 168	19 min	10 h
719	Derby Mountain RAWSDBYM8	86.0	Gauge	Sweet Grass	88.1%	148 of 168	14 min	12 h
720	Smith River 8 SW EdenEDNM8	85.8	Gauge	Cascade	89.8%	151 of 168	14 min	15 h
721	Missoula 6 NW WfoMSOM8	85.8	Cooperative	Missoula	74.0%	20 of 27	47 min	12.1 h
722	Flaxville - Navajo MT-5REDM8	85.4	Gauge	Daniels	100%	168 of 168	59 min	75 min
723	SidneyS2120	85.3	Soil	Richland	95.8%	161 of 168	53 min	2 h
724	Choteau 5NE - Teton RiverCHTM8	85.2	Gauge	Teton	100%	168 of 168	74 min	78 min
725	Ennis 8NNEMDBM8	85.2	Gauge	Madison	99.4%	167 of 168	59 min	2 h
726	Red LodgeRELM8	85.2	Cooperative	Carbon	71.4%	5 of 7	7 min	2 days
727	Bynum 4 SseBYNM8	85.2	Cooperative	Teton	71.4%	5 of 7	14 min	2 days
728	Sidney 2 SSIDM8	85.2	Cooperative	Richland	71.4%	5 of 7	16 min	3 days
729	Hamilton 3.7 SEMT-RV-16	85.2	Volunteer	Ravalli	71.4%	5 of 7	26 min	2.5 days
730	Park City 6.0 WSWMT-SW-12	85.2	Volunteer	Stillwater	71.4%	5 of 7	26 min	28 h
731	HardinHDNM8	85.2	Cooperative	Big Horn	71.4%	5 of 7	47 min	29 h
732	Madison River 6 NE McAllister below Ennis LakeMADM8	85.2	Cooperative	Madison	71.4%	5 of 7	67 min	2 days
733	Hamilton 9.2 SSWMT-RV-18	85.2	Volunteer	Ravalli	71.4%	5 of 7	86 min	24 h
734	Victor 5.4 SEMT-RV-15	85.2	Volunteer	Ravalli	71.4%	5 of 7	86 min	2.4 days
735	Missoula 2.9 EMT-MS-36	85.2	Volunteer	Missoula	71.4%	5 of 7	86 min	2.5 days
736	Helena 5.8 NEMT-LC-19	85.2	Volunteer	Lewis and Clark	71.4%	5 of 7	2.4 h	2 days
737	Meadow Lane Colony-Loma 9.6 NWMT-CH-8	85.2	Volunteer	Chouteau	71.4%	5 of 7	2.4 h	3 days
737	Chester 6.4 NNWMT-LY-37	85.2	Volunteer	Liberty	71.4%	5 of 7	2.4 h	3 days
739	Volborg 15.1 SSWMT-PR-14	85.2	Volunteer	Powder River	71.4%	5 of 7	2.4 h	2.5 days
740	Finneys MeadowFINM8	85.1	Gauge	Missoula	100%	168 of 168	19 min	60 min
741	Teton River AT LomaLTRM8	85.0	Gauge	Chouteau	100%	168 of 168	26 min	60 min
742	JordanS2121	85.0	Soil	Garfield	99.4%	167 of 168	1.7 h	2.1 h
743	Upper Musselshell-Harlowton, MT (UMHM)USBR-UMHM	84.9	Gauge	Wheatland	94.6%	159 of 168	48 min	2 h
744	Cut Bank (AWOS)CTB	84.9	Airport	Glacier	70.1%	202 of 288	7 min	60 min
745	Biddle 8SWBDDM8	84.7	Cooperative	Powder River	71.4%	5 of 7	3.6 h	2 days
746	Bisson Creek SnotelBISM8	84.6	Gauge	Lake	98.2%	165 of 168	1.6 h	2.1 h
746	Bloody Dick SnotelBLOM8	84.6	Gauge	Beaverhead	98.2%	165 of 168	1.6 h	2.1 h
746	Blacktail Mtn SnotelBLTM8	84.6	Gauge	Flathead	98.2%	165 of 168	1.6 h	2.1 h
746	Waldron SnotelCHUM8	84.6	Gauge	Teton	98.2%	165 of 168	1.6 h	2.1 h
746	Clover Meadow SnotelCMDM8	84.6	Gauge	Madison	98.2%	165 of 168	1.6 h	2.1 h

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; an airfield is compared with the nearest other airport, never its own report. 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.