Live/247 Rank/South Dakota

South Dakota 24/7 Rank

Every station in South Dakota 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 ranked36.7% sent every report dueranked October 4, 2026page 1 of 4South Dakota instrumentsSouth Dakota 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, 707 have a page of their own; the rest are platforms heard here that have not yet reported enough to be listed.

Every ranked station, first to last

1stLast

Each rank wears its colour: first in its state in bright green, last in deep red, and every rank between mixed along the band.

How they reported this week

The days behind it

7 days30 days 90 days

every report90 to 99%under 90%

Every station, ranked

Rank	Station	Score	Network	County	Received	Reports	Arrives in	Longest silence
1	YanktonYKN	100.0	Airport	Yankton	100%	168 of 168	9 min	86 min
2	Buffalo2WX	100.0	Airport	Harding	100%	168 of 168	9 min	60 min
3	Sioux FallsFSD	99.9	Airport	Minnehaha	100%	168 of 168	9 min	60 min
4	MitchellMHE	99.7	Airport	Davison	100%	168 of 168	12 min	66 min
5	PierrePIR	99.7	Airport	Hughes	100%	168 of 168	12 min	61 min
6	BrookingsBKX	99.4	Airport	Brookings	100%	168 of 168	9 min	60 min
7	KennebecKENS2	99.3	Cooperative	Lyman	100%	7 of 7	8 min	24 h
8	CastlewoodCLWS2	99.3	Cooperative	Hamlin	100%	7 of 7	9 min	27 h
9	Mobridge 2NNWY26	99.3	Cooperative	Walworth	100%	7 of 7	13 min	24.4 h
10	CantonCNNS2	99.3	Cooperative	Lincoln	100%	7 of 7	13 min	25.7 h
11	EdgemontEMTS2	99.3	Cooperative	Fall River	100%	7 of 7	19 min	24.5 h
12	BrittonBRIS2	99.3	Cooperative	Marshall	100%	7 of 7	19 min	24 h
12	MilbankMLBS2	99.3	Cooperative	Grant	100%	7 of 7	19 min	24 h
14	Watertown-23MI.EseCLKS2	99.3	Cooperative	Deuel	100%	7 of 7	19 min	24 h
15	Hot SpringsHOSS2	99.3	Cooperative	Fall River	100%	7 of 7	19 min	24.5 h
16	LeadLEAS2	99.3	Cooperative	Pennington	100%	7 of 7	19 min	24 h
17	MitchellMCLS2	99.3	Cooperative	Davison	100%	7 of 7	27 min	24.7 h
18	MurdoMURS2	99.3	Cooperative	Jones	100%	7 of 7	39 min	24 h
19	Winner 24MI.SeGRGS2	99.3	Cooperative	Gregory	100%	7 of 7	59 min	24 h
20	Hayti 1WHYTS2	99.3	Cooperative	Hamlin	100%	7 of 7	78 min	24 h
21	HighmoreHMRS2	99.3	Cooperative	Hyde	100%	7 of 7	89 min	24 h
22	Gann Valley 3NNEGNVS2	99.3	Cooperative	Buffalo	100%	7 of 7	1.6 h	24.3 h
23	Andover No. 2ANVS2	99.3	Cooperative	Day	100%	7 of 7	2 h	24 h
24	LaBolt 0.1 WSWSD-GT-9	99.3	Volunteer	Grant	100%	3 of 3	26 min	24 h
24	Kadoka 2.8 WNWSD-JK-1	99.3	Volunteer	Jackson	100%	3 of 3	26 min	24 h
26	Chamberlain 7.5 SSWSD-BL-10	99.3	Volunteer	Brule	100%	3 of 3	26 min	25 h
27	Hill City 3.4 ENESD-PN-107	99.3	Volunteer	Pennington	100%	3 of 3	26 min	24 h
28	Belle Fourche 0.7 ESD-BT-26	99.3	Volunteer	Butte	100%	3 of 3	26 min	24 h
28	Watertown 2.3 ESD-CD-30	99.3	Volunteer	Codington	100%	3 of 3	26 min	24 h
28	Edgemont 0.4 WSD-FR-21	99.3	Volunteer	Fall River	100%	3 of 3	26 min	24 h
28	Spearfish 2.8 WNWSD-LW-26	99.3	Volunteer	Lawrence	100%	3 of 3	26 min	24 h
32	Tyndall 0.3 WNWSD-BH-1	99.3	Volunteer	Bon Homme	100%	3 of 3	26 min	24 h
32	Parker 7.2 NSD-MC-13	99.3	Volunteer	McCook	100%	3 of 3	26 min	24 h
32	Piedmont 4.6 ESD-MD-32	99.3	Volunteer	Meade	100%	3 of 3	26 min	24 h
32	Elm Springs 4.1 NNWSD-MD-43	99.3	Volunteer	Meade	100%	3 of 3	26 min	24 h
32	Turton 0.0 NNESD-SP-6	99.3	Volunteer	Spink	100%	3 of 3	26 min	24 h
37	Hot Springs 0.4 NWSD-FR-34	99.3	Volunteer	Fall River	100%	3 of 3	26 min	24 h
37	Black Hawk 2.0 WSD-MD-68	99.3	Volunteer	Meade	100%	3 of 3	26 min	24 h
39	Spearfish 3.3 NWSD-LW-37	99.3	Volunteer	Lawrence	100%	3 of 3	26 min	25 h
40	Java 11.5 NNESD-CP-9	99.3	Volunteer	Campbell	100%	3 of 3	26 min	24 h
40	Harrisburg 0.8 NNESD-LN-34	99.3	Volunteer	Lincoln	100%	3 of 3	26 min	24 h
40	White River 17.1 NWSD-ML-7	99.3	Volunteer	Mellette	100%	3 of 3	26 min	24 h
40	Rapid City 7.8 WSD-PN-109	99.3	Volunteer	Pennington	100%	3 of 3	26 min	24 h
44	Sioux Falls 1.1 SSESD-MH-147	99.3	Volunteer	Minnehaha	100%	3 of 3	26 min	25 h
45	Aberdeen 1.5 SESD-BR-46	99.3	Volunteer	Brown	100%	3 of 3	85 min	24 h
46	Custer 1.4 ENESD-CS-38	99.3	Volunteer	Custer	100%	3 of 3	85 min	24 h
46	Vermillion 1.9 NSD-CY-2	99.3	Volunteer	Clay	100%	3 of 3	85 min	24 h
46	Rapid City 4.8 WSWSD-PN-97	99.3	Volunteer	Pennington	100%	3 of 3	85 min	24 h
49	Huron 2.3 ENESD-BD-32	99.3	Volunteer	Beadle	100%	3 of 3	86 min	24 h
49	Newell 5.3 ENESD-BT-23	99.3	Volunteer	Butte	100%	3 of 3	86 min	24 h
51	Presho 12.7 SSWSD-LY-38	99.3	Volunteer	Lyman	100%	3 of 3	86 min	25 h
52	Sioux Falls 4.0 SESD-MH-85	99.3	Volunteer	Minnehaha	100%	3 of 3	86 min	28 h
53	Sioux Falls 3.0 SSD-MH-127	99.3	Volunteer	Minnehaha	100%	3 of 3	86 min	24 h
54	Alexandria 2.6 SSWSD-HN-19	99.3	Volunteer	Hanson	100%	3 of 3	86 min	24 h
54	Reliance 4.2 ENESD-LY-26	99.3	Volunteer	Lyman	100%	3 of 3	86 min	24 h
54	Renner 4.1 NWSD-MH-71	99.3	Volunteer	Minnehaha	100%	3 of 3	86 min	24 h
54	Rapid City 9.6 WNWSD-PN-56	99.3	Volunteer	Pennington	100%	3 of 3	86 min	24 h
58	Brookings 0.4 WNWSD-BK-69	99.3	Volunteer	Brookings	100%	3 of 3	86 min	25 h
59	Seneca 8.3 SSWSD-FK-8	99.3	Volunteer	Faulk	100%	3 of 3	86 min	24 h
59	Montrose 5.8 NWSD-MC-1	99.3	Volunteer	McCook	100%	3 of 3	86 min	24 h
59	Sioux Falls 3.6 SSD-MH-120	99.3	Volunteer	Lincoln	100%	3 of 3	86 min	24 h
59	White River 12.7 ENESD-ML-14	99.3	Volunteer	Mellette	100%	3 of 3	86 min	24 h
63	Emery 10.8 SSD-HT-16	99.3	Volunteer	Hutchinson	100%	3 of 3	86 min	24 h
63	Hartford 0.5 NSD-MH-46	99.3	Volunteer	Minnehaha	100%	3 of 3	86 min	24 h
65	Henry 3.8 WSD-CK-12	99.3	Volunteer	Clark	100%	3 of 3	86 min	24 h
65	Presho 13.8 NWSD-LY-5	99.3	Volunteer	Lyman	100%	3 of 3	86 min	24 h
65	Howard 5.3 WSD-MN-11	99.3	Volunteer	Miner	100%	3 of 3	86 min	24 h
65	Rapid City 3.5 NESD-PN-38	99.3	Volunteer	Pennington	100%	3 of 3	86 min	24 h
65	Sisseton 3.8 WSD-RB-1	99.3	Volunteer	Roberts	100%	3 of 3	86 min	24 h
70	Watertown 3.4 SSD-CD-42	99.3	Volunteer	Codington	100%	3 of 3	86 min	25 h
70	Whitewood 4.2 NNWSD-LW-1	99.3	Volunteer	Lawrence	100%	3 of 3	86 min	25 h
72	Hot Springs 0.4 SSESD-FR-40	99.3	Volunteer	Fall River	100%	3 of 3	86 min	2 days
72	Sisseton 10.4 ENESD-RB-4	99.3	Volunteer	Roberts	100%	3 of 3	86 min	2 days
74	Hot Springs 4.2 WSD-FR-30	99.3	Volunteer	Fall River	100%	3 of 3	86 min	24 h
74	Miller 0.3 SSWSD-HD-12	99.3	Volunteer	Hand	100%	3 of 3	86 min	24 h
74	White River 11.5 NNWSD-ML-15	99.3	Volunteer	Mellette	100%	3 of 3	86 min	24 h
77	Vermillion 1.4 WSD-CY-15	99.3	Volunteer	Clay	100%	3 of 3	86 min	24 h
78	Wasta 21.6 SSWSD-PN-19	99.3	Volunteer	Pennington	100%	3 of 3	2.4 h	24 h
79	Hermosa 0.3 ENESD-CS-17	99.3	Volunteer	Custer	100%	3 of 3	2.4 h	24 h
79	Dimock 10.2 WSD-DG-1	99.3	Volunteer	Douglas	100%	3 of 3	2.4 h	24 h
81	Sioux Falls 5.0 SE ARPTSD-MH-1	99.3	Volunteer	Minnehaha	100%	3 of 3	2.4 h	24 h
82	Lead 10.8 SSESD-LW-38	99.3	Volunteer	Lawrence	100%	3 of 3	2.4 h	24 h
83	Aberdeen 7.2 NWSD-BR-50	99.3	Volunteer	Brown	100%	3 of 3	2.4 h	24 h
83	De Smet 0.2 SSESD-KY-5	99.3	Volunteer	Kingsbury	100%	3 of 3	2.4 h	24 h
83	Sioux Falls 1.6 SWSD-MH-105	99.3	Volunteer	Minnehaha	100%	3 of 3	2.4 h	24 h
83	Dell Rapids 7.6 WSD-MH-125	99.3	Volunteer	Minnehaha	100%	3 of 3	2.4 h	24 h
87	Spearfish 6.7 NNWSD-LW-24	99.3	Volunteer	Lawrence	100%	3 of 3	2.4 h	24 h
88	Rapid City 13.9 WSWSD-PN-88	99.3	Volunteer	Pennington	100%	3 of 3	2.4 h	24 h
89	Sioux Falls 3.3 ESD-MH-110	99.3	Volunteer	Minnehaha	100%	3 of 3	2.4 h	25 h
90	Watertown 2.5 SSWSD-CD-44	99.3	Volunteer	Codington	100%	3 of 3	2.4 h	2 days
91	Edgemont 11.1 SWSD-FR-41	99.3	Volunteer	Fall River	100%	3 of 3	2.4 h	24 h
92	Dell RapidsDERS2	99.2	Gauge	Minnehaha	100%	168 of 168	11 min	60 min
92	Sioux FallsSIFS2	99.2	Gauge	Minnehaha	100%	168 of 168	11 min	60 min
92	Big Sioux River AT Sioux Falls North CliffSXFS2	99.2	Gauge	Minnehaha	100%	168 of 168	11 min	60 min
92	Whitewood Creek 1 S WhitewoodWTWS2	99.2	Gauge	Lawrence	100%	168 of 168	11 min	60 min
92	Missouri River AT YanktonYANS2	99.2	Gauge	Yankton	100%	168 of 168	11 min	60 min
97	Montrose 6NNW - EF VermillionMVRS2	99.2	Gauge	McCook	100%	168 of 168	11 min	64 min
98	WinnerICR	99.1	Airport	Tripp	100%	168 of 168	11 min	68 min
99	Rapid CityRAP	99.1	Airport	Pennington	100%	168 of 168	13 min	60 min
100	Pactola DamRAPS2	99.1	Cooperative	Pennington	100%	7 of 7	2.8 h	25 h
101	Mount Rushmore National MemorialRNMS2	99.0	Cooperative	Pennington	100%	7 of 7	3.2 h	24 h
102	Big Sioux River AT Sioux Falls Maple StreetSFMS2	99.0	Gauge	Minnehaha	99.4%	167 of 168	11 min	2 h
102	Moreau River 2 SE WhitehorseWHIS2	99.0	Gauge	Dewey	99.4%	167 of 168	11 min	2 h
104	CusterCUT	99.0	Airport	Custer	99.4%	167 of 168	12 min	2 h
105	FaithD07	98.9	Airport	Meade	100%	168 of 168	9 min	60 min
106	PhilipPHP	98.9	Airport	Haakon	100%	168 of 168	10 min	60 min
107	Brookings 0.2 SSWSD-BK-7	98.9	Volunteer	Brookings	100%	3 of 3	3.4 h	24 h
107	Mitchell 1.0 SESD-DV-27	98.9	Volunteer	Davison	100%	3 of 3	3.4 h	24 h
109	Webster 9.8 NNESD-DY-17	98.9	Volunteer	Day	100%	3 of 3	3.4 h	24 h
109	Pierre 1.3 SSD-HG-10	98.9	Volunteer	Hughes	100%	3 of 3	3.4 h	24 h
109	Lennox 3.3 NESD-LN-12	98.9	Volunteer	Lincoln	100%	3 of 3	3.4 h	24 h
109	Sioux Falls 4.9 ESESD-MH-126	98.9	Volunteer	Minnehaha	100%	3 of 3	3.4 h	24 h
113	Eureka 0.3 SSESD-MP-3	98.9	Volunteer	McPherson	100%	3 of 3	3.4 h	24 h
114	Huron 6.8 NNESD-BD-7	98.9	Volunteer	Beadle	100%	3 of 3	3.4 h	24 h
115	Rapid City 3.9 SSD-PN-43	98.9	Volunteer	Pennington	100%	3 of 3	3.4 h	24 h
115	Rapid City 2.2 SESD-PN-78	98.9	Volunteer	Pennington	100%	3 of 3	3.4 h	24 h
117	Custer State Park RAWSCSPS2	98.8	Gauge	Custer	100%	168 of 168	13 min	60 min
117	Shadehill RAWSSHDS2	98.8	Gauge	Perkins	100%	168 of 168	13 min	60 min
117	Whitetail Peak Raws Near Rochford 6WWPKS2	98.8	Gauge	Pennington	100%	168 of 168	13 min	60 min
120	HuronHON	98.7	Airport	Beadle	98.2%	165 of 168	10 min	2.1 h
121	WatertownATY	98.6	Airport	Codington	100%	168 of 168	11 min	64 min
122	Nemo RAWSNMOS2	98.6	Gauge	Lawrence	100%	168 of 168	14 min	67 min
122	Red Canyon RAWSRDCS2	98.6	Gauge	Fall River	100%	168 of 168	14 min	67 min
124	Clark No2CAKS2	98.6	Cooperative	Clark	100%	7 of 7	4 h	24 h
125	Magpie Creek RAWSPRMS2	98.6	Gauge	Todd	99.4%	167 of 168	13 min	2 h
126	Sheps Canyon RAWSSDSS2	98.4	Gauge	Fall River	100%	168 of 168	15 min	60 min
127	Brookings 1.4 NWSD-BK-54	98.4	Volunteer	Brookings	100%	3 of 3	4.4 h	24 h
128	Newell 1.2 SSWSD-BT-24	98.4	Volunteer	Butte	100%	3 of 3	4.4 h	26 h
129	Aberdeen 3EABES2	98.3	Cooperative	Brown	100%	28 of 28	68 min	7.1 h
130	VermillionVMR	98.3	Airport	Clay	99.0%	499 of 504	10 min	80 min
131	Sisseton8D3	98.2	Airport	Roberts	100%	168 of 168	9 min	60 min
132	AberdeenABR	98.2	Airport	Brown	100%	168 of 168	12 min	60 min
133	Sand Lake RAWSLLKS2	98.2	Gauge	Mcpherson	100%	168 of 168	16 min	60 min
134	Medary CreekMDYS2	98.2	Gauge	Brookings	100%	168 of 168	16 min	75 min
134	Brookings 4NW - N Deer CreekNDCS2	98.2	Gauge	Brookings	100%	168 of 168	16 min	75 min
134	Trent - Big Sioux RiverTRES2	98.2	Gauge	Moody	100%	168 of 168	16 min	75 min
137	Rapid Creek AT Big BendBIGS2	98.2	Gauge	Pennington	100%	168 of 168	16 min	60 min
137	Battle Creek 2 WNW KeystoneJUDS2	98.2	Gauge	Pennington	100%	168 of 168	16 min	60 min
137	White River 6 S KadokaKDKS2	98.2	Gauge	Jackson	100%	168 of 168	16 min	60 min
137	Parmelee 7 Wsw PrecipitationPAMS2	98.2	Gauge	Todd	100%	168 of 168	16 min	60 min
137	Deadman Gulch near HaywardRIPS2	98.2	Gauge	Pennington	100%	168 of 168	16 min	60 min
137	Redwater River 1 NW Belle FourcheRWRS2	98.2	Gauge	Butte	100%	168 of 168	16 min	60 min
137	Victoria Creek 4 W Victoria DamVAVS2	98.2	Gauge	Pennington	100%	168 of 168	16 min	60 min
137	Wilson Creek Horse Camp Near Hill City 4SeWILS2	98.2	Gauge	Pennington	100%	168 of 168	16 min	60 min
145	South Canyon 5 W Rapid CityECHS2	98.2	Gauge	Pennington	100%	168 of 168	16 min	65 min
145	Wild Irishman Gulch Near Rapid City 6WIRIS2	98.2	Gauge	Pennington	100%	168 of 168	16 min	65 min
145	Upper Prairie Creek Near Rapid City 13WUPCS2	98.2	Gauge	Pennington	100%	168 of 168	16 min	65 min
148	RosebudRBDS2	98.2	Gauge	Todd	100%	168 of 168	16 min	66 min
149	Rapid Creek AT Pactola ReservoirPACS2	98.2	Gauge	Pennington	100%	168 of 168	16 min	75 min
149	Grand River AT Shadehill ReservoirSHAS2	98.2	Gauge	Perkins	100%	168 of 168	16 min	75 min
151	Bear in the Lodge Creek 8 SW WanbleeBERS2	98.2	Gauge	Jackson	100%	168 of 168	16 min	60 min
151	Rapid Creek AT Canyon LakeCYNS2	98.2	Gauge	Pennington	100%	168 of 168	16 min	60 min
151	Reno Gulch 4 SW Hill CityRGUS2	98.2	Gauge	Pennington	100%	168 of 168	16 min	60 min
154	Rapid Creek 11 SW Victoria CreekRAVS2	98.2	Gauge	Pennington	100%	168 of 168	16 min	65 min
155	Sturgis - Bear Butte CreekSTUS2	98.2	Gauge	Meade	100%	168 of 168	16 min	69 min
156	Sunday Gulch 4 S Hill CitySUNS2	98.2	Gauge	Pennington	100%	168 of 168	16 min	70 min
157	Grand River RAWSGRRS2	98.2	Gauge	Corson	99.4%	167 of 168	15 min	2 h
158	CanningMKCS2	98.2	Gauge	Hughes	99.4%	167 of 168	15 min	2 h
159	Inlet Canal 3 NW Inlet Canal above Belle Fourche ReservoirINLS2	98.1	Gauge	Butte	100%	168 of 168	16 min	60 min
160	Cheyenne River 7 SE Angostura ReservoirANGS2	98.1	Gauge	Fall River	100%	168 of 168	16 min	60 min
161	ABES2ABES2	98.1	DCP	-	100%	7 of 7	5 h	24 h
162	Ellsworth AFBRCA	98.1	Airport	Pennington	98.8%	166 of 168	13 min	2 h
163	Rapid City 12SW - Baker Park RAWSDOHS2	98.0	Gauge	Pennington	99.4%	167 of 168	16 min	2 h
163	Sturgis - Deadman GultchSTGS2	98.0	Gauge	Meade	99.4%	167 of 168	16 min	2 h
165	Belle Fourche Ham RadioBLES2	98.0	Gauge	Butte	99.4%	167 of 168	16 min	2 h
165	Avon - Choteau CreekCCAS2	98.0	Gauge	Charles Mix	99.4%	167 of 168	16 min	2 h
165	GaryLQGS2	98.0	Gauge	Deuel	99.4%	167 of 168	16 min	2 h
165	BentfordMCBS2	98.0	Gauge	Spink	99.4%	167 of 168	16 min	2 h
165	KennebecMCKS2	98.0	Gauge	Lyman	99.4%	167 of 168	16 min	2 h
165	MilbankNWMS2	98.0	Gauge	Grant	99.4%	167 of 168	16 min	2 h
165	CentervilleTRCS2	98.0	Gauge	Turner	99.4%	167 of 168	16 min	2 h
165	TulareTULS2	98.0	Gauge	Spink	99.4%	167 of 168	16 min	2 h
165	New Underwood - Boxelder CreekUNDS2	98.0	Gauge	Pennington	99.4%	167 of 168	16 min	2 h
174	Sturgis49B	98.0	Airport	Meade	99.0%	499 of 504	10 min	80 min
175	TyndallTYNS2	97.9	Cooperative	Bon Homme	100%	7 of 7	-	24 h
176	Stockholm 2.0 ENESD-GT-12	97.9	Volunteer	Grant	100%	3 of 3	5.4 h	24 h
177	Aberdeen 9.4 NWSD-BR-16	97.9	Volunteer	Brown	100%	3 of 3	5.4 h	24 h
178	Milbank1D1	97.9	Airport	Grant	99.0%	499 of 504	10 min	80 min
179	MobridgeMBG	97.8	Airport	Walworth	100%	168 of 168	12 min	69 min
180	Brookings - Six Mile CreekSMCS2	97.8	Gauge	Brookings	98.8%	166 of 168	16 min	3 h
181	Big Sioux River 2 N BruceBRCS2	97.8	Gauge	Brookings	98.8%	166 of 168	16 min	2 h
181	Big Sioux River 10 SE BrookingsBRKS2	97.8	Gauge	Moody	98.8%	166 of 168	16 min	2 h
183	Rapid City WestRWES2	97.6	Gauge	Pennington	100%	168 of 168	15 min	60 min
184	Bear Creek RAWSLANS2	97.6	Gauge	Dewey	100%	168 of 168	19 min	72 min
185	Desmet6E5	97.6	Airport	Kingsbury	99.0%	499 of 504	10 min	75 min
186	Custer RAWSCRRS2	97.6	Gauge	Custer	98.8%	166 of 168	17 min	2 h
187	AshtonATNS2	97.6	Gauge	Spink	98.2%	165 of 168	16 min	1.8 h
188	Cold Brook Creek AT Hot SpringsARGS2	97.6	Gauge	Fall River	98.2%	165 of 168	16 min	2 h
188	Big Sioux River 4 SE WatertownBSWS2	97.6	Gauge	Codington	98.2%	165 of 168	16 min	2 h
188	CastlewoodCSWS2	97.6	Gauge	Hamlin	98.2%	165 of 168	16 min	2 h
188	James River 3 NE RedfieldRFDS2	97.6	Gauge	Spink	98.2%	165 of 168	16 min	2 h
188	James River 7 SW StratfordSFDS2	97.6	Gauge	Spink	98.2%	165 of 168	16 min	2 h
193	MilbankMYBS2	97.6	Gauge	Grant	98.2%	165 of 168	16 min	2 h
194	Rapid City - Rapid Creek above WRFRCVS2	97.5	Gauge	Pennington	100%	168 of 168	16 min	60 min
195	Custer RAWSBKFS2	97.5	Gauge	Pennington	100%	168 of 168	16 min	69 min
196	Norris 2.0 SSWSD-ML-3	97.5	Volunteer	Mellette	100%	3 of 3	6.4 h	25 h
197	Long Lake 3.1 WSWSD-MP-9	97.5	Volunteer	McPherson	100%	3 of 3	6.4 h	24 h
198	Ree Heights 1.3 SSWSD-HD-19	97.5	Volunteer	Hand	100%	3 of 3	6.4 h	2 days
199	Mobridge 0.3 WSD-WL-12	97.5	Volunteer	Walworth	100%	3 of 3	6.4 h	24 h
200	Porcupine RAWSPRGS2	97.5	Gauge	Shannon	99.4%	167 of 168	18 min	2 h
200	Huron RAWSRHUS2	97.5	Gauge	Hand	99.4%	167 of 168	18 min	2 h
202	ACMS2ACMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	AVMS2AVMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	BFMS2BFMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	BSNS2BSNS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	BTCS2BTCS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	BWLS2BWLS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	CLMS2CLMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	CPTS2CPTS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	CTWS2CTWS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	FLMS2FLMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	FLNS2FLNS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	GOTS2GOTS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	GRMS2GRMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	HAMS2HAMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	HMLS2HMLS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	HRMS2HRMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	KBMS2KBMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	KDMS2KDMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	LCMS2LCMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	LLAS2LLAS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	LMNS2LMNS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	LPMS2LPMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	LRMS2LRMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	MCTS2MCTS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	MHTS2MHTS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	MLMS2MLMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	MNMS2MNMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	OAKS2OAKS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	OEMS2OEMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	PKMS2PKMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	PRFS2PRFS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	PSTS2PSTS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	PVMS2PVMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	RBMS2RBMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	SFSS2SFSS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	SFWS2SFWS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	SHSS2SHSS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	SPMS2SPMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	STMS2STMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	THMS2THMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	TIMS2TIMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	UNIS2UNIS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	VGAS2VGAS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	VNMS2VNMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	WGMS2WGMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	WRIS2WRIS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
202	WSMS2WSMS2	97.4	DCP	-	100%	7 of 7	6.7 h	24 h
249	Annie Creek 6 SW LeadANNS2	97.4	Gauge	Lawrence	97.6%	164 of 168	16 min	2 h
250	Pine Ridge PrecipitationPNES2	97.3	Gauge	Shannon	100%	168 of 168	20 min	64 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.