Live/247 Rank/Massachusetts

Massachusetts 24/7 Rank

Every station in Massachusetts 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.

744 stations ranked28.3% sent every report dueranked October 16, 2026page 3 of 3Massachusetts instrumentsMassachusetts 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 744 ranked here, 733 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	Citizen station EW8513EW8513	82.0	Citizen	Essex	58.9%	99 of 168	18 s	4.5 h
502	Citizen station KB1DML-5KB1DML-5	82.0	Citizen	Essex	57.7%	291 of 504	18 s	1.8 h
503	Citizen station GW3742GW3742	81.9	Citizen	Middlesex	62.5%	105 of 168	19 s	4.8 h
504	Citizen station FW6610FW6610	81.9	Citizen	Hampshire	59.9%	302 of 504	15 s	2.3 h
505	Citizen station W1NHDW1NHD	81.9	Citizen	Essex	58.3%	147 of 252	18 s	3.8 h
506	Citizen station K1UTSK1UTS	81.9	Citizen	Middlesex	58.3%	98 of 168	19 s	5.8 h
507	Citizen station FW3705FW3705	81.9	Citizen	Essex	57.1%	96 of 168	20 s	5 h
508	Citizen station KB1GNFKB1GNF	81.6	Citizen	Franklin	60.5%	305 of 504	18 s	2.7 h
509	Citizen station GW3043GW3043	81.6	Citizen	Franklin	60.1%	101 of 168	19 s	5 h
510	Citizen station FW5795FW5795	81.6	Citizen	Essex	58.3%	294 of 504	19 s	2.1 h
511	Citizen station CW0311CW0311	81.6	Citizen	Worcester	57.7%	97 of 168	17 s	6 h
512	Citizen station GW3371GW3371	81.5	Citizen	Franklin	58.9%	297 of 504	17 s	2.3 h
513	Citizen station EW5056EW5056	81.5	Citizen	Barnstable	57.5%	145 of 252	18 s	4 h
514	Citizen station FW5461FW5461	81.4	Citizen	Hampden	58.7%	296 of 504	18 s	2.3 h
515	Citizen station W1CPR-13W1CPR-13	81.4	Citizen	Essex	58.6%	109 of 186	18 s	6.3 h
516	Citizen station N1IERN1IER	81.4	Citizen	Bristol	58.4%	131 of 224	19 s	5.3 h
517	Citizen station NE1NHNE1NH	81.2	Citizen	Worcester	61.1%	308 of 504	18 s	3.3 h
518	Citizen station KB1DMLKB1DML	81.2	Citizen	Middlesex	59.3%	299 of 504	18 s	2.3 h
519	Citizen station FW3260FW3260	81.2	Citizen	Middlesex	58.7%	148 of 252	18 s	5 h
520	Citizen station WX1USNWX1USN	81.1	Citizen	Norfolk	56.2%	81 of 144	20 s	7 h
521	Citizen station W1MWS-13W1MWS-13	81.0	Citizen	Middlesex	57.7%	291 of 504	15 s	2.4 h
522	Citizen station W1EZYW1EZY	80.9	Citizen	Bristol	60.7%	102 of 168	16 s	8 h
523	Citizen station FW9816FW9816	80.9	Citizen	Middlesex	55.9%	94 of 168	17 s	6.3 h
524	Citizen station CW5624CW5624	80.8	Citizen	Middlesex	62.0%	160 of 258	15 s	3.3 h
525	Cambridge 1.0 WNWMA-MD-231	80.8	Volunteer	Middlesex	57.1%	4 of 7	7.4 h	3.5 days
526	Sandwich 4.1 SSEMA-BA-102	80.8	Volunteer	Barnstable	57.1%	4 of 7	8.4 h	37.1 h
527	Citizen station DW4028DW4028	80.7	Citizen	Bristol	59.5%	100 of 168	17 s	9.8 h
528	Winchendon 3.2 SMA-WR-80	80.7	Volunteer	Worcester	57.1%	4 of 7	7.4 h	3.5 days
529	Citizen station EW0347EW0347	80.7	Citizen	Worcester	55.9%	94 of 168	16 s	6.5 h
530	Citizen station K1DRDK1DRD	80.6	Citizen	Middlesex	57.5%	305 of 530	19 s	2.5 h
531	Citizen station DW7355DW7355	80.5	Citizen	Middlesex	58.9%	99 of 168	19 s	6 h
532	Citizen station EW3326EW3326	80.4	Citizen	Middlesex	54.9%	123 of 224	18 s	4.8 h
533	Citizen station GW4510GW4510	80.3	Citizen	Worcester	61.8%	328 of 530	19 s	2.6 h
534	Citizen station CW0003CW0003	80.3	Citizen	Middlesex	57.5%	129 of 224	18 s	5.5 h
535	Citizen station DW8851DW8851	80.2	Citizen	Hampden	54.7%	93 of 170	19 s	6.5 h
536	Citizen station GW1524GW1524	80.1	Citizen	Berkshire	61.5%	155 of 252	16 s	4.3 h
537	Citizen station DW6574DW6574	80.1	Citizen	Middlesex	55.3%	93 of 168	15 s	5.5 h
538	Citizen station N1BFON1BFO	80.0	Citizen	Middlesex	57.1%	288 of 504	17 s	1.9 h
539	Citizen station FW2089FW2089	79.9	Citizen	Norfolk	55.2%	293 of 530	18 s	2.5 h
540	Citizen station CW3224CW3224	79.9	Citizen	Middlesex	55.1%	139 of 252	18 s	4.7 h
541	Citizen station N1LTPN1LTP	79.9	Citizen	Bristol	51.7%	116 of 224	16 s	4 h
542	Citizen station GW6013GW6013	79.8	Citizen	Plymouth	61.7%	97 of 157	19 s	7.3 h
543	Citizen station DRMIKEDRMIKE	79.8	Citizen	Essex	60.1%	101 of 168	19 s	5.5 h
544	Citizen station DW1283DW1283	79.8	Citizen	Middlesex	54.9%	123 of 224	18 s	4.8 h
545	Citizen station EW9733EW9733	79.8	Citizen	Plymouth	53.5%	120 of 224	19 s	5 h
546	Citizen station EW5144EW5144	79.7	Citizen	Norfolk	57.7%	97 of 168	17 s	5.3 h
547	Citizen station EW8459EW8459	79.7	Citizen	Essex	53.7%	271 of 504	17 s	2.3 h
548	Citizen station EW2727EW2727	79.7	Citizen	Suffolk	51.3%	115 of 224	19 s	4 h
549	Citizen station DW2671DW2671	79.6	Citizen	Norfolk	54.6%	134 of 245	17 s	5.6 h
550	Citizen station CW0451CW0451	79.6	Citizen	Bristol	52.3%	132 of 252	16 s	4.2 h
551	Citizen station FW1460FW1460	79.5	Citizen	Bristol	55.9%	94 of 168	17 s	5 h
552	Citizen station GW4827GW4827	79.5	Citizen	Norfolk	54.7%	263 of 480	16 s	2.7 h
553	Citizen station N2XION2XIO	79.4	Citizen	Middlesex	57.7%	291 of 504	19 s	2.8 h
554	Citizen station W1REHW1REH	79.3	Citizen	Worcester	58.6%	311 of 530	18 s	3.4 h
555	East Falmouth 1.2 WNWMA-BA-17	79.3	Volunteer	Barnstable	57.1%	4 of 7	10.4 h	3.5 days
556	Citizen station GW2867GW2867	79.3	Citizen	Hampshire	56.5%	228 of 403	18 s	4.5 h
557	Citizen station EW9991EW9991	79.3	Citizen	Middlesex	54.7%	276 of 504	18 s	2.9 h
558	Citizen station EW6338EW6338	79.3	Citizen	Essex	53.1%	119 of 224	15 s	5.5 h
559	Citizen station DW9025DW9025	79.2	Citizen	Worcester	54.0%	121 of 224	18 s	5.5 h
560	Citizen station FW3892FW3892	79.1	Citizen	Norfolk	57.1%	128 of 224	18 s	4.3 h
561	Citizen station EW4324EW4324	79.1	Citizen	Worcester	51.3%	167 of 325	19 s	3 h
562	Citizen station FW0917FW0917	79.0	Citizen	Worcester	57.0%	198 of 347	16 s	2.9 h
563	Citizen station DW3637DW3637	79.0	Citizen	Hampden	52.0%	175 of 336	18 s	3.7 h
564	Citizen station FW4377FW4377	79.0	Citizen	Essex	51.6%	113 of 219	15 s	5.3 h
565	Citizen station FW8889FW8889	79.0	Citizen	Essex	51.3%	115 of 224	17 s	5 h
566	Citizen station DW0868DW0868	78.9	Citizen	Plymouth	54.7%	92 of 168	15 s	5.3 h
567	Citizen station CW3008CW3008	78.8	Citizen	Essex	55.3%	93 of 168	21 s	5.3 h
568	Citizen station EW6327EW6327	78.8	Citizen	Middlesex	50.6%	340 of 672	18 s	1.7 h
569	Citizen station FW6146FW6146	78.7	Citizen	Norfolk	52.9%	172 of 325	19 s	4.5 h
570	Citizen station EW1555EW1555	78.6	Citizen	Norfolk	58.4%	393 of 672	18 s	2 h
571	Citizen station CW0210CW0210	78.6	Citizen	Middlesex	54.1%	91 of 168	16 s	5.3 h
572	Citizen station FW5238FW5238	78.6	Citizen	Bristol	52.0%	350 of 672	17 s	2.1 h
573	Gloucester 1.8 WSWMA-ES-103	78.6	Volunteer	Essex	42.8%	3 of 7	26 min	3 days
574	East Bridgewater 0.3 WSWMA-PL-22	78.6	Volunteer	Plymouth	42.8%	3 of 7	26 min	3 days
575	Winsor Dam-Quabbin RsvrBCNM3	78.6	Cooperative	Hampshire	42.8%	3 of 7	50 min	24 h
576	Carlisle 2.0 SEMA-MD-217	78.6	Volunteer	Middlesex	42.8%	3 of 7	86 min	24 h
577	Marblehead 0.6 WNWMA-ES-102	78.6	Volunteer	Essex	42.8%	3 of 7	86 min	2 days
578	Littleton 1.4 WMA-MD-195	78.6	Volunteer	Middlesex	42.8%	3 of 7	86 min	37.1 h
579	Newton 1.8 NNWMA-MD-121	78.6	Volunteer	Middlesex	42.8%	3 of 7	86 min	2 days
580	MA-WR-158MA-WR-158	78.6	COCORAHS	-	42.8%	3 of 7	86 min	36.1 h
581	Edgartown 0.6 SMA-DK-26	78.6	Volunteer	Dukes	42.8%	3 of 7	86 min	47 h
582	Pepperell 0.6 SEMA-MD-168	78.6	Volunteer	Middlesex	42.8%	3 of 7	86 min	2.5 days
583	Northampton 2.5 EMA-HS-65	78.6	Volunteer	Hampshire	42.8%	3 of 7	86 min	36.1 h
584	BCNM3BCNM3	78.6	DCP	-	42.8%	3 of 7	1.7 h	24 h
585	Citizen station EW7574EW7574	78.5	Citizen	Barnstable	53.5%	120 of 224	17 s	4.5 h
586	Citizen station K0WU2AZOK0WU2AZO	78.5	Citizen	Middlesex	53.1%	119 of 224	18 s	7.3 h
587	Citizen station CW5897CW5897	78.5	Citizen	Worcester	51.4%	173 of 336	20 s	4 h
588	Citizen station CW6151CW6151	78.5	Citizen	Essex	51.3%	345 of 672	16 s	2 h
589	Worcester 2.0 SEMA-WR-113	78.4	Volunteer	Worcester	57.1%	4 of 7	13.4 h	36.1 h
590	Northbridge 1.7 WNWMA-WR-69	78.4	Volunteer	Worcester	57.1%	4 of 7	13.4 h	2.5 days
591	Citizen station EW9036EW9036	78.3	Citizen	Middlesex	54.4%	122 of 224	17 s	9 h
592	Citizen station EW0364EW0364	78.3	Citizen	Bristol	54.4%	122 of 224	18 s	4.4 h
593	Citizen station FW2479FW2479	78.3	Citizen	Norfolk	53.1%	268 of 504	16 s	3.4 h
594	Citizen station GW3519GW3519	78.3	Citizen	Middlesex	50.4%	339 of 672	17 s	1.9 h
595	Citizen station N2WPON2WPO	78.2	Citizen	Norfolk	58.9%	297 of 504	18 s	2.8 h
596	Citizen station GW0203GW0203	78.2	Citizen	Bristol	50.8%	114 of 224	16 s	6.3 h
597	Citizen station GW6028GW6028	78.2	Citizen	Essex	50.7%	341 of 672	19 s	2 h
598	Citizen station WX1PBDWX1PBD	78.1	Citizen	Essex	52.1%	263 of 504	19 s	3.3 h
599	Citizen station N1BSON1BSO	78.1	Citizen	Plymouth	51.1%	112 of 219	18 s	6.8 h
600	Citizen station FW7433FW7433	78.1	Citizen	Norfolk	50.1%	337 of 672	17 s	1.9 h
601	Falmouth 3.2 WSWMA-BA-113	78.1	Volunteer	Barnstable	42.8%	3 of 7	86 min	3.5 days
602	Citizen station WB1DXWB1DX	78.0	Citizen	Worcester	52.8%	333 of 630	19 s	2.9 h
603	Citizen station FW3266FW3266	78.0	Citizen	Plymouth	52.1%	292 of 560	18 s	3 h
604	Citizen station N1EVHN1EVH	78.0	Citizen	Essex	50.9%	257 of 504	18 s	3 h
605	Citizen station DW7873DW7873	78.0	Citizen	Essex	50.3%	338 of 672	18 s	2.1 h
606	Citizen station EW6514EW6514	77.9	Citizen	Plymouth	57.7%	306 of 530	18 s	2.4 h
607	Citizen station GW7325GW7325	77.9	Citizen	Essex	56.7%	286 of 504	19 s	5.8 h
608	Citizen station EW4818EW4818	77.9	Citizen	Essex	54.3%	137 of 252	19 s	9 h
609	Citizen station W1LP-13W1LP-13	77.9	Citizen	Barnstable	52.6%	118 of 224	19 s	5.3 h
610	Citizen station EW9082EW9082	77.9	Citizen	Bristol	49.1%	110 of 224	16 s	5.5 h
611	Citizen station FW4323FW4323	77.9	Citizen	Middlesex	48.6%	109 of 224	17 s	5.3 h
612	Citizen station W6SOXW6SOX	77.8	Citizen	Middlesex	50.7%	320 of 630	18 s	2.5 h
613	Citizen station EW1898EW1898	77.8	Citizen	Middlesex	49.5%	111 of 224	18 s	6 h
614	Citizen station KB1MIMKB1MIM	77.7	Citizen	Hampshire	52.2%	117 of 224	17 s	8.5 h
615	Citizen station EW8958EW8958	77.7	Citizen	Middlesex	50.6%	170 of 336	18 s	4.7 h
616	Citizen station DW4657DW4657	77.7	Citizen	Plymouth	49.7%	334 of 672	16 s	2.1 h
617	Usacoe Birch Hill DamBIRM3	77.7	Cooperative	Worcester	42.8%	3 of 7	88 min	4 days
617	Tully Lake/Usacoe DamTLLM3	77.7	Cooperative	Worcester	42.8%	3 of 7	88 min	4 days
619	Citizen station DW7061DW7061	77.6	Citizen	Franklin	58.3%	147 of 252	17 s	3.8 h
620	Citizen station DW8945DW8945	77.6	Citizen	Middlesex	53.1%	268 of 504	20 s	3.3 h
621	Citizen station N1RMKN1RMK	77.6	Citizen	Middlesex	51.1%	206 of 403	17 s	3.4 h
622	Citizen station CW5324CW5324	77.6	Citizen	Hampshire	50.3%	169 of 336	15 s	4.7 h
623	FOSM3FOSM3	77.6	DCP	-	42.8%	3 of 7	63 min	4 days
623	SUDM3SUDM3	77.6	DCP	-	42.8%	3 of 7	63 min	4 days
625	Falmouth 4.9 NNWMA-BA-105	77.6	Volunteer	Barnstable	42.8%	3 of 7	3.4 h	3.5 days
626	Citizen station WA1ENOWA1ENO	77.5	Citizen	Plymouth	56.0%	226 of 403	20 s	7.8 h
627	Citizen station DW4847DW4847	77.5	Citizen	Berkshire	50.8%	342 of 672	16 s	2.6 h
628	Citizen station EW4331EW4331	77.5	Citizen	Middlesex	50.3%	169 of 336	18 s	4.8 h
629	Citizen station DW2806DW2806	77.5	Citizen	Essex	49.1%	110 of 224	18 s	6.3 h
630	Connecticut River AT NorthamptonNHMM3	77.4	Gauge	Hampshire	72.7%	163 of 224	32 min	22 h
631	Citizen station FW9099FW9099	77.4	Citizen	Worcester	51.7%	116 of 224	17 s	7 h
632	Citizen station CW0500CW0500	77.4	Citizen	Worcester	50.0%	336 of 672	18 s	2.4 h
633	Citizen station CW0962CW0962	77.4	Citizen	Plymouth	48.8%	246 of 504	19 s	2.8 h
634	Citizen station EW2517EW2517	77.4	Citizen	Middlesex	48.6%	109 of 224	19 s	5.4 h
635	Citizen station EW8080EW8080	77.3	Citizen	Plymouth	51.7%	174 of 336	22 s	6 h
636	Citizen station EW3861EW3861	77.3	Citizen	Bristol	49.1%	110 of 224	17 s	6.8 h
637	Citizen station DW0935DW0935	77.2	Citizen	Nantucket	58.9%	99 of 168	19 s	6.8 h
638	Citizen station N1JOTN1JOT	77.2	Citizen	Plymouth	54.7%	276 of 504	16 s	3.6 h
639	Citizen station FW2140FW2140	77.2	Citizen	Middlesex	52.7%	133 of 252	25 s	6 h
640	Citizen station FW8920FW8920	77.2	Citizen	Worcester	52.2%	351 of 672	18 s	2 h
641	Citizen station KJ6SMLKJ6SML	77.2	Citizen	Worcester	51.1%	344 of 672	19 s	2 h
642	Citizen station GW5905GW5905	77.2	Citizen	Hampshire	50.6%	170 of 336	18 s	5.5 h
643	Citizen station KC1VMZKC1VMZ	77.1	Citizen	Worcester	52.3%	132 of 252	17 s	9.4 h
644	Citizen station EW2106EW2106	77.1	Citizen	Essex	50.8%	342 of 672	18 s	2.9 h
645	Citizen station EW7590EW7590	77.1	Citizen	Essex	49.2%	331 of 672	17 s	2.4 h
646	Citizen station EW4525EW4525	77.0	Citizen	Berkshire	51.0%	245 of 480	18 s	3.7 h
647	Citizen station CW0237CW0237	77.0	Citizen	Norfolk	47.2%	136 of 288	15 s	4.7 h
648	North Falmouth 1.0 NEMA-BA-112	77.0	Volunteer	Barnstable	42.8%	3 of 7	26 min	5 days
649	Springfield 0.9 EMA-HD-58	77.0	Volunteer	Hampden	42.8%	3 of 7	26 min	5 days
650	Citizen station EW8528EW8528	76.9	Citizen	Middlesex	55.5%	100 of 180	16 s	4.8 h
651	Citizen station FW4597FW4597	76.9	Citizen	Middlesex	53.7%	271 of 504	17 s	2.4 h
652	Citizen station KMADALTO1KMADALTO1	76.9	Citizen	Berkshire	50.1%	316 of 630	16 s	2.8 h
653	Citizen station EW8307EW8307	76.8	Citizen	Worcester	50.2%	110 of 219	17 s	7.5 h
654	Citizen station EW5580EW5580	76.7	Citizen	Norfolk	53.1%	119 of 224	17 s	12.8 h
655	Citizen station EW9808EW9808	76.7	Citizen	Middlesex	52.9%	116 of 219	20 s	6.3 h
656	Citizen station FW1143FW1143	76.7	Citizen	Middlesex	50.8%	114 of 224	16 s	10 h
657	Mashpee 4.6 SMA-BA-78	76.7	Volunteer	Barnstable	42.8%	3 of 7	6.4 h	2.5 days
658	Citizen station CW7500CW7500	76.5	Citizen	Middlesex	52.9%	267 of 504	21 s	3.3 h
659	Citizen station FW4085FW4085	76.5	Citizen	Berkshire	51.1%	172 of 336	16 s	4.7 h
660	Citizen station K1LBGK1LBG	76.4	Citizen	Norfolk	50.9%	321 of 630	20 s	2.9 h
661	Citizen station CW3660CW3660	76.3	Citizen	Middlesex	51.5%	130 of 252	20 s	10 h
662	Westfield 1.8 SSEMA-HD-65	76.3	Volunteer	Hampden	42.8%	3 of 7	4.4 h	4.5 days
663	Foxborough 3.1 EMA-NF-73	76.3	Volunteer	Norfolk	42.8%	3 of 7	7.4 h	2.6 days
664	Citizen station EW9662EW9662	76.2	Citizen	Middlesex	49.1%	330 of 672	17 s	3.1 h
665	Citizen station DW5181DW5181	76.2	Citizen	Essex	48.5%	326 of 672	17 s	3 h
666	Citizen station DW6723DW6723	76.0	Citizen	Essex	43.8%	96 of 219	19 s	5.8 h
667	East Coastal Massachusetts AT Gloucester HarborGLCM3	75.9	Gauge	Essex	70.7%	396 of 560	22 min	2 days
668	BostonNDBC-BHBM3	75.9	Gauge	Suffolk	67.2%	226 of 336	43 min	6.5 h
669	Citizen station N1EDZN1EDZ	75.9	Citizen	Hampshire	48.0%	242 of 504	17 s	4.2 h
670	Citizen station WE1CWE1C	75.8	Citizen	Worcester	49.6%	200 of 403	18 s	3.1 h
671	Citizen station EW6058EW6058	75.6	Citizen	Barnstable	50.1%	337 of 672	20 s	2.3 h
672	Citizen station DW2257DW2257	75.6	Citizen	Essex	48.6%	109 of 224	22 s	9.8 h
673	Citizen station EW5351EW5351	75.5	Citizen	Middlesex	52.3%	211 of 403	18 s	2.8 h
674	Citizen station GW7015GW7015	75.5	Citizen	Barnstable	48.6%	109 of 224	17 s	5 h
675	Citizen station DW2589DW2589	75.3	Citizen	Plymouth	55.7%	281 of 504	17 s	2.4 h
676	Citizen station FW7922FW7922	75.3	Citizen	Worcester	52.0%	175 of 336	16 s	4.8 h
677	Nantucket 1.9 SSEMA-NT-11	75.3	Volunteer	Nantucket	42.8%	3 of 7	9.4 h	36.1 h
678	Citizen station CW2236CW2236	75.2	Citizen	Norfolk	54.3%	137 of 252	18 s	4.8 h
679	Citizen station FW2367FW2367	75.2	Citizen	Middlesex	50.2%	101 of 201	18 s	7.1 h
680	Citizen station EW3281EW3281	75.2	Citizen	Bristol	47.6%	320 of 672	17 s	2.9 h
681	Citizen station EW1152EW1152	75.1	Citizen	Suffolk	58.3%	294 of 504	17 s	2.5 h
682	Citizen station EW0152EW0152	75.1	Citizen	Norfolk	55.8%	296 of 530	17 s	3.9 h
683	Citizen station DW3706DW3706	75.1	Citizen	Suffolk	50.1%	337 of 672	18 s	3.3 h
684	Citizen station FW9148FW9148	75.1	Citizen	Middlesex	49.5%	111 of 224	19 s	5.8 h
685	Citizen station EW6013EW6013	74.9	Citizen	Middlesex	47.4%	319 of 672	19 s	2.7 h
686	Citizen station EW3230EW3230	74.9	Citizen	Plymouth	46.8%	135 of 288	20 s	8.9 h
687	Nantucket 5.9 ESEMA-NT-9	74.8	Volunteer	Nantucket	42.8%	3 of 7	9.4 h	3.5 days
688	Citizen station K1TTTK1TTT	74.7	Citizen	Berkshire	44.4%	280 of 630	18 s	3.2 h
689	Citizen station W1NJCW1NJC	74.6	Citizen	Worcester	46.1%	172 of 373	14 s	4.7 h
690	Citizen station DW5490DW5490	74.5	Citizen	Norfolk	49.7%	109 of 219	19 s	5.5 h
691	Citizen station GW6334GW6334	74.4	Citizen	Middlesex	43.8%	96 of 219	17 s	6.2 h
692	Citizen station AU346AU346	74.2	Citizen	Barnstable	51.8%	209 of 403	17 s	13.7 h
693	Citizen station GW3373GW3373	74.2	Citizen	Worcester	47.6%	155 of 325	18 s	6.9 h
694	Marion 1.3 NMA-PL-66	73.9	Volunteer	Plymouth	42.8%	3 of 7	12.4 h	3 days
695	Citizen station EW6283EW6283	73.8	Citizen	Berkshire	48.8%	328 of 672	17 s	2.5 h
696	Holden 2.0 ESEMA-WR-25	73.5	Volunteer	Worcester	57.1%	4 of 7	24.4 h	2.5 days
697	Holliston 0.8 SMA-MD-42	73.5	Volunteer	Middlesex	57.1%	4 of 7	24.4 h	2.5 days
698	Sturbridge 4.6 SWMA-WR-118	73.5	Volunteer	Worcester	57.1%	4 of 7	25.4 h	37.1 h
699	Citizen station EW5291EW5291	73.5	Citizen	Hampshire	46.2%	233 of 504	19 s	6.9 h
700	Citizen station AP586AP586	73.1	Citizen	Suffolk	51.3%	115 of 224	18 s	6.7 h
701	Citizen station FW7612FW7612	73.1	Citizen	Barnstable	46.5%	313 of 672	18 s	2.7 h
702	Citizen station EW8783EW8783	73.0	Citizen	Bristol	33.3%	56 of 168	24 s	6 h
703	Citizen station GW5771GW5771	72.9	Citizen	Worcester	54.5%	229 of 420	16 s	4.7 h
704	Citizen station FW5480FW5480	72.8	Citizen	Hampshire	47.9%	161 of 336	17 s	6.5 h
705	Citizen station N1QWWN1QWW	72.7	Citizen	Bristol	41.9%	94 of 224	18 s	7.3 h
706	Citizen station GW4318GW4318	72.1	Citizen	Middlesex	44.0%	148 of 336	20 s	13.3 h
707	Fall RiverNDBC-FRXM3	71.2	Gauge	Bristol	75.3%	253 of 336	43 min	6.5 h
708	Castle IslandNDBC-CSIM3	70.6	Gauge	Suffolk	57.5%	322 of 560	44 min	6.3 h
709	Fall RiverNDBC-FRVM3	69.3	Gauge	Bristol	67.2%	226 of 336	43 min	6.5 h
710	Nantucket IslandNDBC-NTKM3	69.1	Gauge	Nantucket	57.6%	323 of 560	44 min	6.3 h
711	Chatham 1.6 WNWMA-BA-71	68.9	Volunteer	Barnstable	28.5%	2 of 7	12.4 h	2 days
712	Citizen station GW4536GW4536	68.7	Citizen	Norfolk	55.8%	225 of 403	19 s	4.8 h
713	Citizen station EW9429EW9429	68.5	Citizen	Middlesex	42.0%	106 of 252	14 s	44.7 h
714	Citizen station W1RBOW1RBO	67.9	Citizen	Middlesex	40.8%	206 of 504	19 s	39.8 h
715	Citizen station DW6903DW6903	67.2	Citizen	Essex	39.0%	119 of 305	19 s	2.6 days
716	Citizen station GW0848GW0848	67.0	Citizen	Worcester	38.3%	84 of 219	16 s	2.4 days
717	Citizen station CW2404CW2404	65.6	Citizen	Plymouth	34.5%	183 of 530	18 s	27.3 h
718	Citizen station FW2970FW2970	64.8	Citizen	Barnstable	50.0%	112 of 224	18 s	7.5 h
719	Citizen station GW6804GW6804	63.6	Citizen	Middlesex	28.5%	72 of 252	16 s	3.1 days
720	Borden Flats Light at Fall RiverNDBC-BLTM3	63.0	Gauge	Bristol	57.6%	323 of 560	44 min	6.3 h
720	New Bedford, Barrier GateNDBC-NBGM3	63.0	Gauge	Bristol	57.6%	323 of 560	44 min	6.3 h
722	Citizen station GW6963GW6963	62.5	Citizen	Middlesex	20.7%	419 of 2,016	19 s	3.5 h
723	Citizen station GW0260GW0260	62.3	Citizen	Middlesex	20.5%	414 of 2,016	17 s	3.6 h
724	Citizen station GW0632GW0632	62.3	Citizen	Norfolk	20.4%	413 of 2,016	18 s	3.7 h
725	Citizen station FW3619FW3619	62.2	Citizen	Hampshire	20.2%	408 of 2,016	17 s	3.6 h
726	Citizen station GW5618GW5618	62.1	Citizen	Plymouth	20.1%	406 of 2,016	18 s	3.7 h
727	Citizen station GW1240GW1240	62.1	Citizen	Essex	19.7%	398 of 2,016	18 s	3.5 h
728	Citizen station GW1533GW1533	61.9	Citizen	Worcester	20.1%	406 of 2,016	19 s	3.5 h
729	Citizen station DW3092DW3092	61.5	Citizen	Middlesex	20.5%	414 of 2,016	18 s	3.6 h
730	Citizen station GW5950GW5950	61.4	Citizen	Middlesex	20.4%	412 of 2,016	18 s	3.6 h
731	Woods HoleNDBC-BZBM3	60.6	Gauge	Barnstable	67.2%	226 of 336	43 min	6.5 h
732	Citizen station GW6155GW6155	60.5	Citizen	Plymouth	20.2%	408 of 2,016	17 s	3.6 h
733	Citizen station N1EDFN1EDF	60.4	Citizen	Middlesex	19.6%	132 of 672	18 s	2.4 days
734	Citizen station FW9998FW9998	60.0	Citizen	Middlesex	18.3%	370 of 2,016	19 s	4.6 h
735	Millers River 1 W Birch Hill DamRYLM3	59.2	Gauge	Worcester	94.9%	319 of 336	23 min	60 min
736	Citizen station FW7635FW7635	58.8	Citizen	Plymouth	14.8%	50 of 336	16 s	4.3 days
737	Citizen station WD1LWD1L	57.9	Citizen	Plymouth	53.1%	214 of 403	16 s	5.2 h
738	Citizen station EW2725EW2725	57.8	Citizen	Plymouth	12.1%	20 of 165	17 s	4.9 days
739	Citizen station EW0420EW0420	57.4	Citizen	Worcester	20.2%	408 of 2,016	18 s	3.7 h
740	NewtonMA006	57.3	Road	Middlesex	86.5%	436 of 504	20 min	80 min
741	Citizen station GW7823GW7823	56.6	Citizen	Worcester	2.4%	49 of 2,016	17 s	3 h
742	Citizen station GW7797GW7797	54.9	Citizen	Bristol	20.4%	412 of 2,016	16 s	3.6 h
743	AshburnhamASBM3	50.1	Cooperative	Worcester	8.3%	14 of 168	1.5 h	23 h
744	NortonNRNM3	50.1	Cooperative	Bristol	8.3%	14 of 168	1.5 h	23 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.