Colorado 24/7 Rank
Every station in Colorado 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.
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 2,650 ranked here, 2,612 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 | Parts | Network | County | Received | Reports | Arrives in | Longest silence |
|---|---|---|---|---|---|---|---|---|---|
| 2,500 | Supply Cr Basin Precip Station Nr Grand Lake401555105531901 | 73.6 | Gauge | Grand | 63.2% | 425 of 672 | 13 min | 26.6 h | |
| 2,502 | E Troublesome Cr Upper Basin Precip Nr Troublesome401408106123201 | 73.6 | Gauge | Grand | 63.1% | 424 of 672 | 13 min | 26.4 h | |
| 2,503 | Colorado Springs - Fountain Creek at 8thFTHC2 | 73.5 | Gauge | El Paso | 98.8% | 166 of 168 | 25 min | 2 h | |
| 2,504 | Citizen station GW0455GW0455 | 73.5 | Citizen | Larimer | 53.6% | 216 of 403 | 20 s | 6.6 h | |
| 2,505 | Durango 1.5 SWCO-LP-59 | 73.4 | Volunteer | La Plata | 42.8% | 3 of 7 | 8.4 h | 4 days | |
| 2,506 | Denver 9.4 SCO-AR-43 | 73.4 | Volunteer | Arapahoe | 42.8% | 3 of 7 | 10.4 h | 3 days | |
| 2,507 | Bobtail Creek Near Jones Pass09034900 | 73.3 | Gauge | Grand | 62.5% | 420 of 672 | 13 min | 28.9 h | |
| 2,508 | Citizen station EW8375EW8375 | 73.2 | Citizen | Boulder | 50.4% | 113 of 224 | 16 s | 4.8 h | |
| 2,509 | Masonville 8NW - Buckhorn CanyonBKNC2 | 73.1 | Gauge | Larimer | 40.3% | 339 of 840 | 15 min | 72 min | |
| 2,510 | DumontDMTC2 | 73.0 | Gauge | Clear Creek | 100% | 168 of 168 | 16 min | 60 min | |
| 2,511 | US-34/Redwood DrCO136 | 73.0 | Road | Larimer | 68.1% | 229 of 336 | 31 min | 23.8 h | |
| 2,512 | Citizen station CW2056CW2056 | 72.9 | Citizen | Larimer | 49.2% | 248 of 504 | 17 s | 3.8 h | |
| 2,513 | Tower SnotelTOWC2 | 72.7 | Gauge | Routt | 99.4% | 167 of 168 | - | 2 h | |
| 2,514 | Stillwater Cr Basin Precip Sta Nr Grand Lake401331105552301 | 72.6 | Gauge | Grand | 63.2% | 425 of 672 | 18 min | 26.7 h | |
| 2,515 | Willow Cr Upper Basin Precip Sta Nr Grand Lake401642106051601 | 72.6 | Gauge | Grand | 62.9% | 423 of 672 | 17 min | 26.6 h | |
| 2,516 | Citizen station GW8037GW8037 | 72.5 | Citizen | Denver | 49.2% | 248 of 504 | 17 s | 8.8 h | |
| 2,517 | Haswell 6.6 NNWCO-LN-70 | 72.4 | Volunteer | Lincoln | 42.8% | 3 of 7 | 10.4 h | 4 days | |
| 2,518 | Buffalo Creek 2.4 SECO-JF-575 | 72.4 | Volunteer | Jefferson | 42.8% | 3 of 7 | 11.4 h | 3.5 days | |
| 2,519 | Falcon 3.1 NNECO-EP-455 | 72.4 | Volunteer | El Paso | 42.8% | 3 of 7 | 12.4 h | 3 days | |
| 2,520 | Elliot Ridge SnotelELRC2 | 72.3 | Gauge | Summit | 99.4% | 167 of 168 | 35 min | 2 h | |
| 2,521 | Mc Clure Pass SnotelMCPC2 | 72.3 | Gauge | Gunnison | 73.8% | 124 of 168 | 1.6 h | 18 h | |
| 2,522 | Limon 15.9 SSWCO-EL-103 | 72.3 | Volunteer | Elbert | 57.1% | 4 of 7 | 23.4 h | 2 days | |
| 2,523 | Rye 11.2 ECO-PU-79 | 72.3 | Volunteer | Pueblo | 57.1% | 4 of 7 | 23.4 h | 2 days | |
| 2,524 | Citizen station W0RMT-13W0RMT-13 | 72.0 | Citizen | Boulder | 59.4% | 101 of 170 | 17 s | 5.3 h | |
| 2,525 | Lafayette 2.5 NWCO-BO-222 | 72.0 | Volunteer | Boulder | 57.1% | 4 of 7 | 25.4 h | 24 h | |
| 2,526 | Colorado Springs 7.1 NNWCO-EP-503 | 72.0 | Volunteer | El Paso | 57.1% | 4 of 7 | 25.4 h | 2.4 days | |
| 2,527 | Peyton 5.4 NNWCO-EP-365 | 72.0 | Volunteer | El Paso | 57.1% | 4 of 7 | 25.4 h | 3 days | |
| 2,528 | Ridgway 5.9 NCO-OR-26 | 72.0 | Volunteer | Ouray | 57.1% | 4 of 7 | 25.4 h | 2 days | |
| 2,529 | Fort Collins 3.3 WCO-LR-1371 | 72.0 | Volunteer | Larimer | 57.1% | 4 of 7 | 26.4 h | 2.5 days | |
| 2,530 | Lake George 7.5 WSWCO-PK-46 | 72.0 | Volunteer | Park | 57.1% | 4 of 7 | 28.4 h | 2 days | |
| 2,531 | Highlands Ranch 3.0 WSWCO-DG-250 | 72.0 | Volunteer | Douglas | 57.1% | 4 of 7 | 30.4 h | 33 h | |
| 2,532 | Poudre Park - Poudre RiverPRHC2 | 72.0 | Gauge | Larimer | 49.2% | 261 of 530 | 26 min | 3.6 h | |
| 2,533 | Sunlight5SM | 72.0 | Airport | Garfield | 49.0% | 247 of 504 | 14 min | 6.2 h | |
| 2,534 | Citizen station GW1725GW1725 | 72.0 | Citizen | Larimer | 48.2% | 162 of 336 | 17 s | 6.7 h | |
| 2,535 | Del Norte 0.25 NWCO-RG-9 | 72.0 | Volunteer | Rio Grande | 42.8% | 3 of 7 | 13.4 h | 35 h | |
| 2,536 | 135N027 Crested ButteCO124 | 71.9 | Road | Gunnison | 61.2% | 294 of 480 | 32 min | 2.6 h | |
| 2,537 | Green RidgeRDGC2 | 71.9 | Gauge | Larimer | 36.1% | 331 of 916 | 15 min | 60 min | |
| 2,538 | BLWC2BLWC2 | 71.8 | DCP | - | 31.0% | 18 of 58 | 18 min | 12 h | |
| 2,539 | Citizen station K9NRGK9NRG | 71.7 | Citizen | Archuleta | 46.8% | 118 of 252 | 19 s | 17.8 h | |
| 2,540 | Citizen station E7853E7853 | 71.6 | Citizen | El Paso | 42.8% | 144 of 336 | 20 s | 13.3 h | |
| 2,541 | Citizen station CW9516CW9516 | 71.5 | Citizen | Denver | 48.4% | 244 of 504 | 17 s | 13.8 h | |
| 2,542 | Bear Creek 5 W EvergreenRSDC2 | 71.4 | Gauge | Jefferson | 51.1% | 86 of 168 | 25 min | 18 h | |
| 2,543 | Homestake Meteorological Station392810106221001 | 71.2 | Gauge | Eagle | 99.4% | 167 of 168 | 33 min | 2 h | |
| 2,544 | Kit Carson 0.3 NCO-CH-32 | 71.1 | Volunteer | Cheyenne | 57.1% | 4 of 7 | 27.4 h | 4 days | |
| 2,545 | Citizen station DW1336DW1336 | 71.0 | Citizen | Jefferson | 44.8% | 226 of 504 | 17 s | 14.3 h | |
| 2,546 | Citizen station CW9688CW9688 | 71.0 | Citizen | Adams | 36.5% | 92 of 252 | 12 s | 7.2 h | |
| 2,547 | Red Feather Lakes 6SSE - ARF2 RAWSARFC2 | 71.0 | Gauge | Larimer | 29.7% | 50 of 168 | 17 min | 2 h | |
| 2,548 | 040E22415RWS1RHS at Fraser Flats CO US CDOTCO139 | 70.9 | Road | Grand | 61.4% | 295 of 480 | 31 min | 2.6 h | |
| 2,549 | 0.7 mi S of Northwest PkwyCO160 | 70.9 | Road | Adams | 61.2% | 294 of 480 | 32 min | 2.6 h | |
| 2,550 | Denver - Dry GultchDGDC2 | 70.9 | Gauge | Denver | 51.1% | 86 of 168 | 15 min | 39 h | |
| 2,551 | Citizen station KA0WKGKA0WKG | 70.8 | Citizen | Phillips | 45.4% | 229 of 504 | 21 s | 14.4 h | |
| 2,552 | Manassa [CCOOP]MNSC2 | 70.4 | Gauge | Conejos | 48.3% | 487 of 1,008 | 15 min | 5.6 h | |
| 2,553 | 115S03365RWS1RHS - 1.7 miles N o CO US CDOTCO224 | 70.3 | Road | El Paso | 61.6% | 296 of 480 | 32 min | 2.6 h | |
| 2,554 | 1.6 mi W of Woodard St GeorgetownCO165 | 70.2 | Road | Clear Creek | 60.8% | 292 of 480 | 31 min | 2.6 h | |
| 2,555 | Citizen station FW6222FW6222 | 69.9 | Citizen | Otero | 49.8% | 251 of 504 | 20 s | 21.3 h | |
| 2,556 | Vail Pass (34)CO070 | 69.8 | Road | Summit | 61.4% | 295 of 480 | 32 min | 2.6 h | |
| 2,557 | US-40 @ Red Dirt HillCO172 | 69.8 | Road | Grand | 61.2% | 294 of 480 | 32 min | 2.6 h | |
| 2,558 | Westcreek 7ENE - West CreekWREC2 | 69.8 | Gauge | Douglas | 50.0% | 84 of 168 | 23 min | 29 h | |
| 2,559 | Fork Collins - BNRR Spring CreekSGCC2 | 69.7 | Gauge | Larimer | 24.2% | 163 of 672 | 14 min | 45 min | |
| 2,560 | Castle RockEPOC2 | 69.6 | Gauge | Douglas | 48.8% | 82 of 168 | 25 min | 25 h | |
| 2,561 | Porphory MountainPPHC2 | 68.9 | Gauge | Boulder | 54.1% | 91 of 168 | 21 min | 3.3 days | |
| 2,562 | Loveland 1St @Taft AveCO128 | 68.4 | Road | Larimer | 59.8% | 201 of 336 | 32 min | 25.4 h | |
| 2,563 | US-40 @ MilnerCO173 | 67.6 | Road | Routt | 55.9% | 188 of 336 | 31 min | 34.3 h | |
| 2,564 | Dakota HillsC99 | 67.5 | Airport | Gilpin | 66.4% | 335 of 504 | 14 min | 37.1 h | |
| 2,565 | Citizen station GW2347GW2347 | 67.5 | Citizen | Adams | 41.0% | 92 of 224 | 19 s | 41 h | |
| 2,566 | 2.4 mi E of SilverthorneCO158 | 67.1 | Road | Summit | 61.4% | 295 of 480 | 32 min | 2.6 h | |
| 2,567 | Alamosa 5.8 WNWCO-AM-1 | 67.1 | Volunteer | Alamosa | 42.8% | 3 of 7 | 25.4 h | 35 h | |
| 2,568 | Citizen station DW7525DW7525 | 67.0 | Citizen | Douglas | 38.1% | 384 of 1,008 | 18 s | 15.2 h | |
| 2,569 | 0.6 mi E of CO-91 Copper MtnCO155 | 66.9 | Road | Summit | 61.2% | 294 of 480 | 32 min | 2.6 h | |
| 2,570 | Citizen station NC0JWNC0JW | 66.5 | Citizen | El Paso | 38.9% | 157 of 403 | 20 s | 43.8 h | |
| 2,571 | Wolf Creek Pass (CDOT)CPW | 66.3 | Airport | Mineral | 43.2% | 218 of 504 | 13 min | 4 days | |
| 2,572 | Rico 4SSWDRXC2 | 66.3 | Gauge | Montezuma | 36.9% | 62 of 168 | 20 min | 25 h | |
| 2,573 | Citizen station EW1095EW1095 | 66.1 | Citizen | Elbert | 31.4% | 211 of 672 | 17 s | 11.4 h | |
| 2,574 | Floyd Hill (36)CO071 | 65.1 | Road | Clear Creek | 76.4% | 257 of 336 | 32 min | 2.6 h | |
| 2,575 | Ward (35)CO044 | 64.7 | Road | Boulder | 77.0% | 259 of 336 | 32 min | 2.6 h | |
| 2,576 | Dry CreekCO152 | 64.5 | Road | Arapahoe | 76.7% | 258 of 336 | 32 min | 2.6 h | |
| 2,577 | Co Meeker 15 WMKRC2 | 64.5 | Gauge | Rio Blanco | 33.9% | 57 of 168 | 24 min | 24 h | |
| 2,578 | 1.3 mi W of FriscoCO154 | 64.4 | Road | Summit | 61.4% | 295 of 480 | 32 min | 2.6 h | |
| 2,579 | Jamestown 2SE - Walker MtnWKMC2 | 64.4 | Gauge | Boulder | 20.6% | 26 of 126 | 20 min | 12 h | |
| 2,580 | Harvard Park - Harvard GultchHGJC2 | 64.2 | Gauge | Denver | 31.5% | 53 of 168 | 19 min | 28 h | |
| 2,581 | I-70 @ Chambers Road (40)CO011 | 63.9 | Road | Adams | 41.6% | 140 of 336 | 32 min | 3.2 days | |
| 2,582 | Citizen station EW5937EW5937 | 63.8 | Citizen | Boulder | 28.2% | 95 of 336 | 11 s | 33.7 h | |
| 2,583 | Middle Fork Camp SnotelMFKC2 | 63.7 | Gauge | Grand | 99.4% | 167 of 168 | 35 min | 2 h | |
| 2,584 | C-470 on Ramp to I-25 NCO153 | 63.7 | Road | Douglas | 61.2% | 294 of 480 | 32 min | 2.6 h | |
| 2,585 | Citizen station GW0143GW0143 | 63.6 | Citizen | Custer | 28.5% | 72 of 252 | 17 s | 3.6 days | |
| 2,586 | Lena Gulch 5 NW LakewoodMGVC2 | 63.2 | Gauge | Jefferson | 16.2% | 24 of 148 | 14 min | 12 h | |
| 2,587 | Co Rifle 23 NWIFLC2 | 62.7 | Gauge | Rio Blanco | 28.5% | 48 of 168 | 15 min | 43 h | |
| 2,588 | Citizen station KI0IO-2KI0IO-2 | 62.5 | Citizen | Larimer | 38.4% | 155 of 403 | 20 s | 2.3 days | |
| 2,589 | Citizen station FW6672FW6672 | 62.5 | Citizen | Elbert | 20.7% | 418 of 2,016 | 18 s | 3.6 h | |
| 2,590 | Citizen station GW3548GW3548 | 62.5 | Citizen | Weld | 20.5% | 414 of 2,016 | 17 s | 3.6 h | |
| 2,591 | Snowmass @HWY82 mp26.8 (10*)CO103 | 62.4 | Road | Pitkin | 60.2% | 289 of 480 | 31 min | 2.9 h | |
| 2,592 | Citizen station GW4663GW4663 | 62.4 | Citizen | Arapahoe | 20.4% | 412 of 2,016 | 18 s | 3.6 h | |
| 2,593 | Citizen station GW5979GW5979 | 62.4 | Citizen | El Paso | 20.3% | 410 of 2,016 | 18 s | 3.6 h | |
| 2,594 | Citizen station FW7460FW7460 | 62.3 | Citizen | Douglas | 20.4% | 412 of 2,016 | 18 s | 3.7 h | |
| 2,595 | Citizen station GW5575GW5575 | 62.3 | Citizen | Summit | 20.3% | 410 of 2,016 | 18 s | 3.7 h | |
| 2,596 | Citizen station GW6033GW6033 | 62.3 | Citizen | Arapahoe | 20.1% | 407 of 2,016 | 19 s | 3.6 h | |
| 2,597 | Citizen station GW6587GW6587 | 62.3 | Citizen | Arapahoe | 20.0% | 404 of 2,016 | 18 s | 3.6 h | |
| 2,598 | Citizen station FW8226FW8226 | 62.1 | Citizen | Logan | 20.7% | 419 of 2,016 | 17 s | 3.6 h | |
| 2,599 | Citizen station GW5510GW5510 | 62.1 | Citizen | El Paso | 19.5% | 395 of 2,016 | 18 s | 3.5 h | |
| 2,600 | Citizen station FW8077FW8077 | 62.0 | Citizen | Larimer | 20.8% | 420 of 2,016 | 18 s | 3.6 h | |
| 2,601 | Citizen station GW1334GW1334 | 61.9 | Citizen | Weld | 20.5% | 414 of 2,016 | 18 s | 3.5 h | |
| 2,602 | 070E23420RWS1MED at Mountain St CO US CDOTCO141 | 61.8 | Road | Clear Creek | 76.4% | 257 of 336 | 32 min | 2.6 h | |
| 2,603 | 070W11765RWS1RHS at W No Name Tu CO US CDOTCO182 | 61.8 | Road | Garfield | 76.4% | 257 of 336 | 32 min | 2.6 h | |
| 2,604 | Citizen station GW2155GW2155 | 61.8 | Citizen | Weld | 20.1% | 406 of 2,016 | 17 s | 3.6 h | |
| 2,605 | Citizen station FW7029FW7029 | 61.6 | Citizen | Jefferson | 22.0% | 371 of 1,680 | 19 s | 3.6 h | |
| 2,606 | Citizen station FW3769FW3769 | 61.6 | Citizen | El Paso | 20.3% | 411 of 2,016 | 18 s | 3.7 h | |
| 2,607 | Hue - Huerfano RiverHRIC2 | 61.5 | Gauge | Huerfano | 99.4% | 167 of 168 | 20 min | 2 h | |
| 2,608 | Co Eads 16 ENEESAC2 | 61.5 | Gauge | Kiowa | 29.7% | 50 of 168 | 24 min | 40 h | |
| 2,609 | Citizen station DW1088DW1088 | 61.4 | Citizen | Weld | 20.8% | 421 of 2,016 | 16 s | 3.6 h | |
| 2,610 | Citizen station GW5162GW5162 | 61.4 | Citizen | Boulder | 20.6% | 417 of 2,016 | 18 s | 3.6 h | |
| 2,611 | Citizen station FW7076FW7076 | 60.8 | Citizen | El Paso | 20.2% | 409 of 2,016 | 18 s | 3.5 h | |
| 2,612 | Hoehne - Purgatorie RiverPHEC2 | 60.7 | Gauge | Las Animas | 100% | 168 of 168 | 25 min | 76 min | |
| 2,613 | Citizen station GW1216GW1216 | 60.7 | Citizen | San Miguel | 20.5% | 414 of 2,016 | 17 s | 3.6 h | |
| 2,614 | Citizen station GW1637GW1637 | 60.7 | Citizen | Jefferson | 19.8% | 401 of 2,016 | 20 s | 5.3 h | |
| 2,615 | Co Grand Junction 9 WGJXC2 | 60.6 | Gauge | Mesa | 25.0% | 42 of 168 | 24 min | 45 h | |
| 2,616 | DillonDLLC2 | 60.5 | Gauge | Summit | 99.4% | 167 of 168 | 25 min | 2 h | |
| 2,617 | Superior 1WNW - Howard BerryHBXC2 | 60.5 | Gauge | Boulder | 16.6% | 30 of 180 | 24 min | 12 h | |
| 2,618 | Citizen station GW4589GW4589 | 60.4 | Citizen | Larimer | 20.6% | 416 of 2,016 | 18 s | 3.6 h | |
| 2,619 | Lakewood 2WNW - Mile High FloodMHFC2 | 60.4 | Gauge | Jefferson | 18.4% | 24 of 130 | 26 min | 24 h | |
| 2,620 | Citizen station GW3535GW3535 | 60.3 | Citizen | Larimer | 19.8% | 401 of 2,016 | 17 s | 3.7 h | |
| 2,621 | Citizen station GW6078GW6078 | 60.2 | Citizen | El Paso | 20.1% | 407 of 2,016 | 19 s | 3.7 h | |
| 2,622 | Estes Park 12NE - Storm MountainMTNC2 | 60.0 | Gauge | Larimer | 19.0% | 48 of 252 | 15 min | 23.6 h | |
| 2,623 | Citizen station GW6775GW6775 | 59.7 | Citizen | Arapahoe | 19.9% | 403 of 2,016 | 17 s | 3.6 h | |
| 2,624 | Surrey Ridge (41)CO073 | 59.7 | Road | Douglas | 10.7% | 36 of 336 | 33 min | 3.9 h | |
| 2,625 | Citizen station GW5283GW5283 | 59.5 | Citizen | El Paso | 19.9% | 402 of 2,016 | 18 s | 6.6 h | |
| 2,626 | FraserWDCC2 | 58.9 | Gauge | Grand | 96.4% | 162 of 168 | 25 min | 5.5 h | |
| 2,627 | I-70 @ I-25 East (40)CO016 | 58.8 | Road | Denver | 33.2% | 108 of 325 | 34 min | 40.1 h | |
| 2,628 | Citizen station GW2556GW2556 | 58.7 | Citizen | Arapahoe | 7.9% | 161 of 2,016 | 18 s | 3 h | |
| 2,629 | Canyon Creek (8)CO099 | 57.8 | Road | Garfield | 61.4% | 295 of 480 | 31 min | 2.6 h | |
| 2,630 | Citizen station GW3520GW3520 | 57.6 | Citizen | Larimer | 20.6% | 416 of 2,016 | 19 s | 3.5 h | |
| 2,631 | Citizen station GW5627GW5627 | 57.5 | Citizen | Routt | 20.2% | 408 of 2,016 | 18 s | 3.7 h | |
| 2,632 | Poncha PassCO181 | 57.2 | Road | Saguache | 61.4% | 295 of 480 | 32 min | 2.6 h | |
| 2,633 | 0.85 mi E of Woodard St GeorgetownCO164 | 57.1 | Road | Clear Creek | 61.2% | 294 of 480 | 32 min | 2.6 h | |
| 2,634 | Cortez 1SW - Upper ColoradoCTZC2 | 56.6 | Gauge | Montezuma | 16.0% | 27 of 168 | 29 min | 29.3 h | |
| 2,635 | Indian Creek ReservoirICRC2 | 56.4 | Gauge | Larimer | 14.8% | 100 of 672 | 14 min | 35.7 h | |
| 2,636 | SargentsSGTC2 | 56.3 | Gauge | Saguache | 90.6% | 203 of 224 | 35 min | 75 min | |
| 2,637 | 0.5 mi E of Vail - RTRCO162 | 56.1 | Road | Eagle | 61.2% | 294 of 480 | 32 min | 2.6 h | |
| 2,638 | 070E23905RWS1RHS - 0.2 mi E of S CO US CDOTCO190 | 56.0 | Road | Clear Creek | 61.4% | 295 of 480 | 32 min | 2.6 h | |
| 2,639 | Citizen station GW7157GW7157 | 55.8 | Citizen | El Paso | 20.6% | 416 of 2,016 | 18 s | 3.6 h | |
| 2,640 | 0.2 mi N of I-225CO163 | 55.3 | Road | Denver | 61.2% | 294 of 480 | 32 min | 2.6 h | |
| 2,641 | 070E23805RWS1MED - 0.3 mi E of F CO US CDOTCO142 | 54.7 | Road | Clear Creek | 61.0% | 293 of 480 | 32 min | 2.6 h | |
| 2,642 | Walton PeakC07 | 54.4 | Airport | Routt | 30.7% | 155 of 504 | 13 min | 4.2 days | |
| 2,643 | 070E23725RWS1RHS - 0.4 mi W of F CO US CDOTCO188 | 54.0 | Road | Clear Creek | 61.4% | 295 of 480 | 32 min | 2.6 h | |
| 2,644 | SHDC2SHDC2 | 53.8 | DCP | - | 5.0% | 17 of 336 | 14 min | 27.5 h | |
| 2,645 | @ University BlvdCO147 | 52.9 | Road | Denver | 61.4% | 295 of 480 | 32 min | 2.6 h | |
| 2,646 | Punkin Center (47)CO069 | 52.3 | Road | Lincoln | 61.4% | 295 of 480 | 32 min | 2.6 h | |
| 2,647 | Downieville Int - RWS200CO143 | 52.0 | Road | Clear Creek | 61.4% | 295 of 480 | 32 min | 2.6 h | |
| 2,648 | 070E23175RWS1MED - 0.1 mi W of U CO US CDOTCO191 | 51.5 | Road | Clear Creek | 61.2% | 294 of 480 | 32 min | 2.6 h | |
| 2,649 | Holyoke (51)CO048 | 48.4 | Road | Phillips | 21.4% | 72 of 336 | 33 min | 4.4 days | |
| 2,650 | Piedra G.S.PGSC2 | 42.0 | Gauge | Hinsdale | 57.1% | 128 of 224 | 34 min | 14.8 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.