Live/247 Rank/Michigan

Michigan 24/7 Rank

Every station in Michigan 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.

792 stations ranked46.2% sent every report dueranked October 4, 2026page 3 of 4Michigan instrumentsMichigan 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 792 ranked here, 778 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	Michigamme River 6 E Crystal FallsCRFM4	96.7	Gauge	Iron	98.0%	659 of 672	15 min	75 min
502	RAWS - RextonREXM4	96.6	Gauge	Mackinac	99.4%	167 of 168	20 min	2 h
503	Rapid RiverSTOM4	96.5	Gauge	Delta	100%	168 of 168	19 min	60 min
504	Alabaster - EB Au Gres RiverALAM4	96.5	Gauge	Arenac	98.8%	166 of 168	26 min	2 h
504	Cedar - Cedar RiverCRRM4	96.5	Gauge	Menominee	98.8%	166 of 168	26 min	2 h
504	Au Sable River 3 E Curtisville--Alcona DamCSVM4	96.5	Gauge	Alcona	98.8%	166 of 168	26 min	2 h
504	Centreville - Spring CreekCTVM4	96.5	Gauge	St. Joseph	98.8%	166 of 168	26 min	2 h
504	Dowagiac AT Dowagiac River at State HWY 51 near DowagiacDOWM4	96.5	Gauge	Cass	98.8%	166 of 168	26 min	2 h
504	St. Joseph AT Mill Creek at Quaker StreetMCQM4	96.5	Gauge	St Joseph	98.8%	166 of 168	26 min	2 h
504	Midland - Chippewa RiverMCRM4	96.5	Gauge	Midland	98.8%	166 of 168	26 min	2 h
504	Saint Joseph River Michigan AT MottvilleMOTM4	96.5	Gauge	St Joseph	98.8%	166 of 168	26 min	2 h
504	Sturgeon River 3 N Nahma JunctionNJNM4	96.5	Gauge	Delta	98.8%	166 of 168	26 min	2 h
504	Saginaw - Spaulding DrainSDSM4	96.5	Gauge	Saginaw	98.8%	166 of 168	26 min	2 h
504	Trap Rock River 2 NE Lake LindenTRRM4	96.5	Gauge	Houghton	98.8%	166 of 168	26 min	2 h
504	Saint Joseph River Michigan AT Three RiversTRVM4	96.5	Gauge	St Joseph	98.8%	166 of 168	26 min	2 h
504	Clam River AT Vogel CenterVGCM4	96.5	Gauge	Missaukee	98.8%	166 of 168	26 min	2 h
517	Cass River 1 SSW Cass CityCSSM4	96.4	Gauge	Tuscola	100%	84 of 84	51 min	3 h
518	CaroCFS	96.3	Airport	Tuscola	99.0%	499 of 504	10 min	80 min
519	White Lake 4 EWHKM4	96.3	Cooperative	Oakland	89.2%	25 of 28	19 min	16 h
520	Marquette - Whetstone BrookWBMM4	96.2	Gauge	Marquette	98.2%	165 of 168	26 min	2 h
521	Black River 3 NW BessemerBESM4	96.2	Gauge	Gogebic	95.2%	160 of 168	21 min	2 h
521	Sterling HeightsCSHM4	96.2	Gauge	Macomb	95.2%	160 of 168	21 min	2 h
521	Black River 2 W JeddoFGOM4	96.2	Gauge	St Clair	95.2%	160 of 168	21 min	2 h
521	Escanaba River 4 S Greenwood Diversion Near GreenwoodGWDM4	96.2	Gauge	Marquette	95.2%	160 of 168	21 min	2 h
521	North Branch Clinton 2 N Mt ClemensMCLM4	96.2	Gauge	Macomb	95.2%	160 of 168	21 min	2 h
521	Pine River 3 S RudyardRUDM4	96.2	Gauge	Chippewa	95.2%	160 of 168	21 min	2 h
521	Tittabawassee River at Second DamSDTM4	96.2	Gauge	Gladwin	95.2%	160 of 168	21 min	2 h
521	Menominee River 3 S VulcanVLCM4	96.2	Gauge	Dickinson	95.2%	160 of 168	21 min	2 h
529	Alger RAWSAGRM4	96.0	Gauge	Arenac	100%	168 of 168	19 min	61 min
530	Schweitzer Reservoir 3 SW Schweitzer ReservoirSZRM4	96.0	Gauge	Marquette	97.6%	164 of 168	26 min	2 h
531	Cisco Branch Ontonagon AT Cisco Lake OutletORCM4	96.0	Gauge	Gogebic	94.6%	159 of 168	21 min	2 h
532	Sturgeon River 5 SE AlstonALSM4	95.9	Gauge	Baraga	100%	168 of 168	31 min	60 min
533	Mackinaw City MI - 9075080MACM4	95.9	Gauge	Cheboygan	98.2%	825 of 840	23 min	48 min
534	Alpena MI - 9075065LPNM4	95.9	Gauge	Alpena	98.1%	824 of 840	23 min	48 min
535	West Neebish Island - 9076027WNEM4	95.9	Gauge	Chippewa	98.1%	824 of 840	23 min	48 min
536	Ludington MI - 9087023LDTM4	95.9	Gauge	Mason	97.9%	823 of 840	23 min	48 min
536	Little Rapids MI - 9076033LTRM4	95.9	Gauge	Chippewa	97.9%	823 of 840	23 min	48 min
536	Sault Ste Marie - US SLIPUSSM4	95.9	Gauge	Chippewa	97.9%	823 of 840	23 min	48 min
539	Detroit - Fort WayneFWNM4	95.9	Gauge	Wayne	97.9%	823 of 840	23 min	48 min
540	Plymouth 5.4 WMI-WS-3	95.8	Volunteer	Washtenaw	100%	3 of 3	11.4 h	24 h
541	Hastings 4.3 SSWMI-BR-13	95.8	Volunteer	Barry	100%	3 of 3	11.4 h	24 h
542	Au Sable River 5 E McKinleyMCKM4	95.8	Gauge	Alcona	98.6%	663 of 672	21 min	75 min
542	Au Sable River AT Mio--Mio DamMIOM4	95.8	Gauge	Oscoda	98.6%	663 of 672	21 min	75 min
542	Au Sable River 3 S Red OakRDOM4	95.8	Gauge	Oscoda	98.6%	663 of 672	21 min	75 min
545	Essexville 3NESVM4	95.8	Gauge	Bay	97.9%	823 of 840	23 min	48 min
546	Holland MI - 9087031HLNM4	95.8	Gauge	Ottawa	97.7%	821 of 840	23 min	48 min
547	S.W. Pier MI - 9076070SWPM4	95.8	Gauge	Chippewa	96.7%	813 of 840	23 min	42 min
548	West Branch Ontonagon River 2 E BerglandBGLM4	95.7	Gauge	Ontonagon	98.5%	662 of 672	21 min	75 min
548	Muskegon River AT EvartEVRM4	95.7	Gauge	Osceola	98.5%	662 of 672	21 min	75 min
550	De Tour Village MI - 9075099DTLM4	95.7	Gauge	Chippewa	97.5%	819 of 840	23 min	48 min
551	Jordan River 4 S East JordanEJJM4	95.6	Gauge	Antrim	99.4%	167 of 168	31 min	2 h
552	Grand Rapids 4N - Grand RiverGNPM4	95.6	Gauge	Kent	99.4%	167 of 168	31 min	3 h
553	Harbor Beach MI - 9075014HRBM4	95.6	Gauge	Huron	97.1%	816 of 840	25 min	42 min
553	OntonagonOGOM4	95.6	Gauge	Ontonagon	97.1%	816 of 840	25 min	42 min
555	Grayling 7WNW - Manistee RiverGYMM4	95.5	Gauge	Crawford	98.8%	166 of 168	31 min	2 h
555	Olive Center - Pigeon River 120thPOCM4	95.5	Gauge	Ottawa	98.8%	166 of 168	31 min	2 h
557	Pine River 3 W HoxeyvilleHOXM4	95.5	Gauge	Wexford	98.6%	663 of 672	26 min	60 min
557	Manistee River 3 N Wellston--Tippy DamWLSM4	95.5	Gauge	Manistee	98.6%	663 of 672	26 min	60 min
559	Manistee River 6 SW Mesick--Hodenpyl DamMSKM4	95.5	Gauge	Wexford	98.6%	663 of 672	26 min	60 min
560	Menominee MI - 9087088MNMM4	95.5	Gauge	Menominee	97.0%	815 of 840	25 min	42 min
561	Evart 2NNW - Chippewa CreekCCEM4	95.4	Gauge	Osceola	98.8%	166 of 168	31 min	3 h
561	Swartz Creek 1 S FlintFLSM4	95.4	Gauge	Genesee	98.8%	166 of 168	31 min	3 h
561	Evart 3NW - Twin CreekTWCM4	95.4	Gauge	Osceola	98.8%	166 of 168	31 min	3 h
564	Grand River 3 W Eastmanville 3wEASM4	95.4	Gauge	Ottawa	98.8%	166 of 168	31 min	3 h
565	Algonac - St Clair RiverALGM4	95.2	Gauge	St. Clair	98.2%	165 of 168	31 min	2 h
566	Allegan 4SE - Kalamazoo RiverALLM4	95.2	Gauge	Allegan	98.2%	165 of 168	31 min	3 h
567	Marquette C.G. - 9099018MCGM4	95.2	Gauge	Marquette	97.2%	817 of 840	27 min	42 min
567	Port Huron - Dry DockPHXM4	95.2	Gauge	St. Clair	97.2%	817 of 840	27 min	42 min
567	Point Iroquois MI - 9099004PTIM4	95.2	Gauge	Chippewa	97.2%	817 of 840	27 min	42 min
567	Rock Cut MI - 9076024RCKM4	95.2	Gauge	Chippewa	97.2%	817 of 840	27 min	42 min
567	St Clair State PoliceSCRM4	95.2	Gauge	St. Clair	97.2%	817 of 840	27 min	42 min
572	Algonac MI - 9014070AGCM4	95.2	Gauge	St. Clair	97.1%	816 of 840	27 min	42 min
572	Fort Gratiot MI - 9014098FTGM4	95.2	Gauge	St. Clair	97.1%	816 of 840	27 min	42 min
572	Mouth of the Black River MI - 9014090MBRM4	95.2	Gauge	St. Clair	97.1%	816 of 840	27 min	42 min
575	FrankfortFKS	95.1	Airport	Benzie	99.0%	499 of 504	10 min	80 min
576	Port Inland MI - 9087096PNLM4	95.1	Gauge	Schoolcraft	97.0%	815 of 840	27 min	42 min
577	Huron River 1 N HamburgHMGM4	95.0	Gauge	Livingston	97.6%	164 of 168	31 min	2 h
578	Glennie 2SEGLNM4	95.0	Cooperative	Alcona	85.7%	6 of 7	9 min	2 days
579	ManchesterMCHM4	95.0	Cooperative	Washtenaw	85.7%	6 of 7	20 min	2 days
580	ArnoldAROM4	95.0	Cooperative	Marquette	85.7%	6 of 7	29 min	25 h
580	TiptonTIPM4	95.0	Cooperative	Lenawee	85.7%	6 of 7	29 min	25 h
582	ChelseaCHLM4	95.0	Cooperative	Washtenaw	85.7%	6 of 7	39 min	2 days
583	EscanabaESAM4	95.0	Gauge	Delta	85.7%	6 of 7	41 min	2 days
584	East Grand RapidsEGRM4	95.0	Cooperative	Kent	85.7%	6 of 7	48 min	37 h
585	Saint JohnsSTJM4	95.0	Cooperative	Clinton	85.7%	6 of 7	49 min	2 days
586	Petoskey NCMCPTYM4	95.0	Cooperative	Emmet	85.7%	6 of 7	58 min	24 h
587	Water WorksBGRM4	95.0	Cooperative	Mecosta	85.7%	6 of 7	69 min	2 days
588	Hale Loud DamHALM4	95.0	Cooperative	Iosco	85.7%	6 of 7	79 min	35 h
589	Coldwater State SchoolCDWM4	95.0	Cooperative	Branch	85.7%	6 of 7	79 min	24 h
590	Fife LakeFLAM4	95.0	Cooperative	Grand Traverse	85.7%	6 of 7	79 min	24 h
591	Scottville 2 SESCOM4	95.0	Cooperative	Mason	85.7%	6 of 7	79 min	2 days
592	Maple City 1EMAPM4	95.0	Cooperative	Leelanau	85.7%	6 of 7	89 min	25 h
593	WyandotteWYTM4	95.0	Cooperative	Wayne	85.7%	6 of 7	2 h	36 h
594	Grayling RAWSGYGM4	94.8	Gauge	Crawford	100%	168 of 168	19 min	60 min
595	Grand River 1 NW Grand LedgeGDLM4	94.8	Cooperative	Eaton	85.7%	6 of 7	2.8 h	2 days
596	HALM4HALM4	94.8	DCP	-	85.7%	6 of 7	2.8 h	35 h
597	HowellOZW	94.6	Airport	Livingston	93.4%	471 of 504	10 min	2.7 h
598	Gwinn 0.7 SWMI-MQ-40	94.4	Volunteer	Marquette	100%	3 of 3	14.4 h	25 h
599	Menominee River AT KossKOSM4	94.4	Gauge	Menominee	95.8%	161 of 168	31 min	3 h
600	NPTM4NPTM4	94.3	DCP	-	85.7%	6 of 7	3.8 h	36 h
601	WHKM4WHKM4	94.3	DCP	-	85.7%	6 of 7	4 h	2 days
602	WyandotteWDTM4	94.1	Gauge	Wayne	96.5%	811 of 840	29 min	48 min
603	Detroit - Windmill PointWMPM4	94.1	Gauge	Wayne	96.4%	810 of 840	29 min	48 min
604	GibralterGRTM4	94.1	Gauge	Wayne	96.3%	809 of 840	29 min	48 min
605	New Port 5SEFPPM4	94.0	Gauge	Monroe	94.8%	797 of 840	26 min	48 min
606	Manistee River 1 N ShermanSHRM4	93.9	Gauge	Wexford	98.8%	664 of 672	30 min	75 min
607	Menominee River 5 SW White RapidsBANM4	93.9	Gauge	Menominee	94.6%	159 of 168	31 min	3 h
608	Beaver IslandSJX	93.8	Airport	Charlevoix	99.0%	499 of 504	10 min	80 min
609	St Clair ShoresSCSM4	93.7	Gauge	Macomb	95.0%	798 of 840	28 min	48 min
610	Boyne FallsBFA	93.6	Airport	Charlevoix	96.2%	485 of 504	10 min	5 h
611	Superior Grand Traverse BayGTRM4	93.5	Gauge	Houghton	95.2%	160 of 168	21 min	2 h
612	Dodgeville - Pilgrim RiverPLGM4	93.4	Gauge	Houghton	87.0%	195 of 224	20 min	62 min
613	Sparta8D4	93.3	Airport	Kent	98.6%	497 of 504	10 min	80 min
614	Cisco Lake Near WatersmeetCCLM4	93.2	Gauge	Gogebic	100%	84 of 84	86 min	2.3 h
615	Saginaw River AT SaginawSAGM4	93.2	Gauge	Saginaw	98.8%	83 of 84	81 min	4 h
616	Thread Creek 4 SE FlintFTCM4	93.2	Gauge	Genesee	98.8%	83 of 84	81 min	5 h
617	Saint Joseph River Michigan AT NilesNILM4	93.2	Gauge	Berrien	90.4%	152 of 168	16 min	6.3 h
618	Rudyard RAWSRYDM4	93.1	Gauge	Chippewa	100%	168 of 168	17 min	60 min
619	Clinton River 2 WNW Mt. ClemensMTCM4	93.1	Gauge	St. Clair	96.0%	269 of 280	31 min	2.7 h
620	TroyVLL	93.0	Airport	Oakland	96.0%	484 of 504	10 min	6 h
621	S. 1.4MI. Otsego LakeAPXM4	93.0	Cooperative	Otsego	80.0%	16 of 20	29 min	20.1 h
622	Tawas City - Tawas PointTAWM4	92.9	Gauge	Iosco	94.0%	158 of 168	21 min	2 h
623	Marquette WFPMRQM4	92.9	Cooperative	Marquette	85.7%	6 of 7	7 h	2 days
624	Gravelly Shoal LighthouseGSLM4	92.8	Gauge	Arenac	91.6%	154 of 168	21 min	6 h
625	Pontiac WWTPPONM4	92.5	Cooperative	Oakland	85.7%	6 of 7	7.8 h	24 h
626	Paint River 6 SE AlphaPRAM4	92.4	Gauge	Iron	94.7%	637 of 672	26 min	1.8 h
627	St Clair ShoresCLSM4	92.3	Gauge	Macomb	95.8%	161 of 168	21 min	2 h
628	Grayling AFGOV	92.3	Airport	Crawford	81.2%	182 of 224	10 min	2 h
629	Grand River AT Grand RapidsGDRM4	92.2	Gauge	Kent	89.7%	201 of 224	31 min	62 min
630	Manistee HarborMEEM4	91.7	Gauge	Manistee	98.8%	166 of 168	21 min	2 h
631	Big Sable PointBSBM4	91.1	Gauge	Mason	99.4%	167 of 168	21 min	2 h
632	Indian River RAWSINDM4	91.0	Gauge	Cheboygan	100%	168 of 168	19 min	60 min
633	Mill Creek 2 S DexterDEXM4	90.3	Gauge	Washtenaw	87.0%	195 of 224	36 min	1.8 h
634	Marne 2.7 NEMI-OW-31	90.0	Volunteer	Ottawa	100%	3 of 3	26.4 h	24 h
635	Old Mission 3SSWOMSM4	90.0	Cooperative	Grand Traverse	71.4%	5 of 7	14 min	36 h
636	PauldingPDGM4	90.0	Cooperative	Ontonagon	71.4%	5 of 7	19 min	47.6 h
637	Harrisville 2 NNEHRSM4	90.0	Cooperative	Alcona	71.4%	5 of 7	19 min	36 h
638	Case Drain-Boartman CRKFLNM4	90.0	Cooperative	Huron	71.4%	5 of 7	19 min	2 days
639	Battle CreekBCKM4	90.0	Cooperative	Calhoun	71.4%	5 of 7	21 min	25 h
640	Cadillac 2SWCDLM4	90.0	Cooperative	Wexford	71.4%	5 of 7	29 min	36 h
641	MarshallMARM4	90.0	Cooperative	Calhoun	71.4%	5 of 7	34 min	36.5 h
642	Wellston Tippy DamWELM4	90.0	Cooperative	Manistee	71.4%	5 of 7	38 min	2 days
643	Newberry Corr FacilityNCFM4	90.0	Cooperative	Luce	71.4%	5 of 7	38 min	36 h
644	Hale 5 SSWHLMM4	90.0	Cooperative	Iosco	71.4%	5 of 7	39 min	2 days
645	NW Michigan Res FarmNWFM4	90.0	Cooperative	Leelanau	71.4%	5 of 7	49 min	36 h
646	Whitmore Lake 1NWWHLM4	90.0	Cooperative	Livingston	71.4%	5 of 7	68 min	2.2 days
647	Richmond 4 NNWRICM4	90.0	Cooperative	Macomb	71.4%	5 of 7	89 min	2 days
648	Menominee No.2MENM4	90.0	Cooperative	Menominee	71.4%	5 of 7	2 h	35 h
649	Experiment Farm #2CEFM4	90.0	Cooperative	Alger	71.4%	5 of 7	2.5 h	2 days
650	Univ Of MichARBM4	89.7	Cooperative	Washtenaw	85.7%	6 of 7	13.8 h	26 h
651	Chatham 1 SE54810	89.5	Reference	Alger	98.5%	67 of 68	2.5 h	4 h
652	CharlotteCLTM4	89.1	Cooperative	Eaton	71.4%	5 of 7	4.3 h	37 h
653	Gaylord 9 SSW54854	89.0	Reference	Otsego	97.0%	66 of 68	2.5 h	4 h
654	GDLM4GDLM4	88.9	DCP	-	71.4%	5 of 7	4.8 h	2 days
655	MCHM4MCHM4	88.9	DCP	-	71.4%	5 of 7	4.9 h	2.1 days
656	East Grand Rapids 1.1 SSWMI-KN-116	88.3	Volunteer	Kent	66.6%	2 of 3	26 min	38 h
657	Bellaire 3.2 NMI-AT-9	88.3	Volunteer	Antrim	66.6%	2 of 3	26 min	37 h
657	Galesburg 1.4 NNWMI-KZ-39	88.3	Volunteer	Kalamazoo	66.6%	2 of 3	26 min	37 h
657	Fowlerville 0.2 SSWMI-LV-36	88.3	Volunteer	Livingston	66.6%	2 of 3	26 min	37 h
657	Flat Rock 0.6 SSWMI-WY-187	88.3	Volunteer	Wayne	66.6%	2 of 3	26 min	37 h
661	Detroit 4.0 WNWMI-WY-194	88.3	Volunteer	Wayne	66.6%	2 of 3	26 min	35 h
662	Fenton 2.0 NMI-GN-42	88.3	Volunteer	Genesee	66.6%	2 of 3	26 min	36 h
662	Trufant 1.8 SEMI-KN-95	88.3	Volunteer	Kent	66.6%	2 of 3	26 min	36 h
662	Gwinn 3.9 ESEMI-MQ-42	88.3	Volunteer	Marquette	66.6%	2 of 3	26 min	36 h
665	Warren 3.8 NEMI-MB-93	88.3	Volunteer	Macomb	66.6%	2 of 3	26 min	36 h
666	Rogers City 0.2 WSWMI-PI-1	88.3	Volunteer	Presque Isle	66.6%	2 of 3	85 min	2 days
667	Vestaburg 1.7 SMI-MT-13	88.3	Volunteer	Montcalm	66.6%	2 of 3	86 min	24 h
668	Big Rapids 5.4 SMI-ME-11	88.3	Volunteer	Mecosta	66.6%	2 of 3	86 min	37 h
669	Sparta 5.7 ENEMI-KN-126	88.3	Volunteer	Kent	66.6%	2 of 3	86 min	38 h
669	Rockford 5.0 ESEMI-KN-83	88.3	Volunteer	Kent	66.6%	2 of 3	86 min	38 h
669	Midland 4.4 SWMI-MD-15	88.3	Volunteer	Midland	66.6%	2 of 3	86 min	38 h
672	Chelsea 2.4 SMI-WS-49	88.3	Volunteer	Washtenaw	66.6%	2 of 3	86 min	36 h
673	Quincy 0.3 NEMI-BH-7	88.3	Volunteer	Branch	66.6%	2 of 3	86 min	37 h
673	Howell 7.3 NMI-LV-47	88.3	Volunteer	Livingston	66.6%	2 of 3	86 min	37 h
673	Ann Arbor 6.4 NNEMI-WS-58	88.3	Volunteer	Washtenaw	66.6%	2 of 3	86 min	37 h
676	Coopersville 2.1 NMI-OW-69	88.3	Volunteer	Ottawa	66.6%	2 of 3	86 min	39 h
677	Colon 0.8 WMI-SJ-8	88.3	Volunteer	St. Joseph	66.6%	2 of 3	86 min	35 h
678	Montague 8.1 NWMI-OC-2	88.3	Volunteer	Oceana	66.6%	2 of 3	86 min	36 h
679	Mount Pleasant 1.4 NEMI-IS-8	88.3	Volunteer	Isabella	66.6%	2 of 3	86 min	37 h
679	Grand Rapids 6.6 WMI-KN-128	88.3	Volunteer	Kent	66.6%	2 of 3	86 min	37 h
679	Ann Arbor 4.3 WSWMI-WS-59	88.3	Volunteer	Washtenaw	66.6%	2 of 3	86 min	37 h
679	Plymouth 1.4 WMI-WY-184	88.3	Volunteer	Wayne	66.6%	2 of 3	86 min	37 h
683	Ada 4.8 NNWMI-KN-131	88.3	Volunteer	Kent	66.6%	2 of 3	86 min	36 h
684	Eagle Harbor 6.0 EMI-KW-1	88.3	Volunteer	Keweenaw	66.6%	2 of 3	2.4 h	36 h
684	Temperance 4.6 WNWMI-MR-22	88.3	Volunteer	Monroe	66.6%	2 of 3	2.4 h	36 h
686	Rochester Hills 1.6 NNWMI-OK-129	88.3	Volunteer	Oakland	66.6%	2 of 3	2.4 h	37 h
687	Clarkston 1.4 NEMI-OK-107	88.3	Volunteer	Oakland	66.6%	2 of 3	2.4 h	37 h
687	Saline 1.3 SSEMI-WS-44	88.3	Volunteer	Washtenaw	66.6%	2 of 3	2.4 h	37 h
689	Walkerville 2.7 EMI-OC-8	88.3	Volunteer	Oceana	66.6%	2 of 3	2.4 h	39 h
690	Alma 0.3 NWMI-GR-3	88.3	Volunteer	Gratiot	66.6%	2 of 3	2.4 h	37 h
690	East Grand Rapids 0.7 SSWMI-KN-7	88.3	Volunteer	Kent	66.6%	2 of 3	2.4 h	37 h
692	Bellaire 4.6 ESEMI-AT-19	88.3	Volunteer	Antrim	66.6%	2 of 3	2.4 h	37 h
692	Midland 1.5 NEMI-MD-16	88.3	Volunteer	Midland	66.6%	2 of 3	2.4 h	37 h
692	Big Bay 9.0 SEMI-MQ-32	88.3	Volunteer	Marquette	66.6%	2 of 3	2.4 h	37 h
695	(KE8CIC) Eaton Rapids 0.3 SEMI-ET-22	88.3	Volunteer	Eaton	66.6%	2 of 3	2.4 h	31 h
696	Manistique River 6 NE ManistiqueMSQM4	88.2	Gauge	Schoolcraft	82.7%	139 of 168	16 min	13 h
697	WattonWTNM4	88.2	Cooperative	Baraga	71.4%	5 of 7	6.3 h	2 days
698	Alto 2.9 SMI-KN-127	87.9	Volunteer	Kent	66.6%	2 of 3	3.4 h	37 h
699	Laingsburg 5.0 SWMI-CT-1	87.9	Volunteer	Clinton	66.6%	2 of 3	3.4 h	36 h
700	Alger 2.4 ENEMI-AR-2	87.9	Volunteer	Arenac	66.6%	2 of 3	3.4 h	37 h
700	Grand Rapids 2.9 NWMI-KN-32	87.9	Volunteer	Kent	66.6%	2 of 3	3.4 h	37 h
700	Vicksburg 8.7 EMI-KZ-42	87.9	Volunteer	Kalamazoo	66.6%	2 of 3	3.4 h	37 h
700	Onekama 1.8 NNWMI-MN-7	87.9	Volunteer	Manistee	66.6%	2 of 3	3.4 h	37 h
704	Grand Junction 1.3 ENEMI-VB-2	87.9	Volunteer	Van Buren	66.6%	2 of 3	3.4 h	35 h
705	South Branch 2.9 ENEMI-IC-10	87.9	Volunteer	Iosco	66.6%	2 of 3	3.4 h	2 days
706	Michigamme [CCOOP]MGAM4	87.6	Gauge	Marquette	83.1%	838 of 1,008	16 min	2.8 h
707	MonroeTTF	87.4	Airport	Monroe	90.2%	455 of 504	10 min	7.6 h
708	Saginaw 4.1 WNWMI-SG-25	87.4	Volunteer	Saginaw	66.6%	2 of 3	4.4 h	37 h
709	Pigeon 0.2 SEMI-HR-12	87.4	Volunteer	Huron	66.6%	2 of 3	4.4 h	38 h
710	Grand Rapids 5.5 SSEMI-KN-86	87.4	Volunteer	Kent	66.6%	2 of 3	4.4 h	36 h
710	New Baltimore 0.4 SSEMI-MB-9	87.4	Volunteer	Macomb	66.6%	2 of 3	4.4 h	36 h
712	Ottawa Lake 1.4 SSWMI-MR-16	87.4	Volunteer	Monroe	66.6%	2 of 3	4.4 h	37 h
713	Howell 6.0 SMI-LV-49	87.4	Volunteer	Livingston	66.6%	2 of 3	4.4 h	39 h
714	Detroit/Grosse IONZ	87.1	Airport	Wayne	89.0%	449 of 504	10 min	18.1 h
715	Traverse City 1.4 SWMI-GT-33	86.9	Volunteer	Grand Traverse	66.6%	2 of 3	5.4 h	36 h
716	Traverse City 4.2 EMI-GT-9	86.9	Volunteer	Grand Traverse	66.6%	2 of 3	5.4 h	2 days
717	Edmore 3.8 ESEMI-MT-8	86.9	Volunteer	Montcalm	66.6%	2 of 3	5.4 h	35 h
718	MI-BH-5MI-BH-5	86.9	COCORAHS	-	66.6%	2 of 3	5.4 h	37 h
719	Otsego 0.9 WNWMI-AN-27	86.5	Volunteer	Allegan	66.6%	2 of 3	6.4 h	2 days
720	Baraga 3.1 WSWMI-BG-6	86.5	Volunteer	Baraga	66.6%	2 of 3	6.4 h	37 h
721	Mancelona 0.5 ESEMI-AT-6	86.5	Volunteer	Antrim	66.6%	2 of 3	6.4 h	36 h
721	Lowell 5.5 NWMI-KN-102	86.5	Volunteer	Kent	66.6%	2 of 3	6.4 h	36 h
723	Harrison 1.7 SWMI-MB-84	86.5	Volunteer	Macomb	66.6%	2 of 3	6.4 h	37 h
724	Northville 3.6 ENEMI-OK-172	86.5	Volunteer	Oakland	66.6%	2 of 3	6.4 h	2 days
725	Lapeer 4.4 SSEMI-LP-14	86.0	Volunteer	Lapeer	66.6%	2 of 3	7.4 h	36 h
726	Edgemont Park 0.7 NNEMI-IH-47	86.0	Volunteer	Ingham	66.6%	2 of 3	7.4 h	37 h
727	Armada 0.3 NMI-MB-82	86.0	Volunteer	Macomb	66.6%	2 of 3	7.4 h	37 h
728	CaledoniaCLDM4	85.7	Gauge	Kent	75.0%	168 of 224	36 min	2.5 h
729	Leonard 1.9 ESEMI-OK-151	85.6	Volunteer	Oakland	66.6%	2 of 3	8.4 h	38 h
730	Nashville 3S - Quaker BrookQBNM4	85.4	Gauge	Barry	86.9%	146 of 168	72 min	3 h
731	Grand River AT LansingLNSM4	85.2	Gauge	Ingham	86.3%	145 of 168	72 min	3 h
732	Cedar Springs 0.9 NNWMI-KN-136	85.1	Volunteer	Kent	66.6%	2 of 3	9.4 h	35 h
733	Kalamazoo 5.6 EMI-KZ-9	85.1	Volunteer	Kalamazoo	66.6%	2 of 3	9.4 h	36 h
734	Canton 3.7 WNWMI-WY-147	85.1	Volunteer	Wayne	66.6%	2 of 3	9.4 h	37 h
734	Belleville 2.8 ESEMI-WY-47	85.1	Volunteer	Wayne	66.6%	2 of 3	9.4 h	37 h
736	AlgonacAGCM4	85.0	Cooperative	St Clair	85.7%	6 of 7	24.8 h	36 h
737	HarveyHRVM4	85.0	Cooperative	Marquette	57.1%	4 of 7	9 min	2.5 days
738	ChesaningCHSM4	85.0	Cooperative	Saginaw	57.1%	4 of 7	29 min	47 h
739	Atlanta 1SWATLM4	85.0	Cooperative	Montmorency	57.1%	4 of 7	1.6 h	2.5 days
740	LuptonLUPM4	85.0	Cooperative	Ogemaw	57.1%	4 of 7	1.6 h	2 days
741	River Raisin AT DundeeDNDM4	85.0	Cooperative	Monroe	57.1%	4 of 7	2.1 h	2.5 days
742	Battle Creek AT Battle CreekBCRM4	84.8	Gauge	Calhoun	85.1%	143 of 168	71 min	3 h
743	Grand River AT AdaADAM4	84.6	Gauge	Kent	89.2%	150 of 168	80 min	5 h
744	Gwinn - KI SawyerKISM4	84.6	Cooperative	Marquette	57.1%	4 of 7	3.1 h	2.5 days
745	Flat River AT SmyrnaSMYM4	84.5	Gauge	Ionia	86.9%	146 of 168	71 min	4 h
746	Manistee 3 SEMANM4	84.5	Cooperative	Manistee	57.1%	4 of 7	19 min	3.5 days
747	Frankenmuth 1SEFKMM4	84.5	Cooperative	Saginaw	57.1%	4 of 7	19 min	3.5 days
748	Port HopeP58	84.4	Airport	Huron	100%	168 of 168	10 min	67 min
749	DNDM4DNDM4	84.3	DCP	-	57.1%	4 of 7	3.8 h	2.5 days
750	Watersmeet 5.0 SEMI-GG-4	84.2	Volunteer	Gogebic	66.6%	2 of 3	11.4 h	2 days

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.