TAF performance measurement results for TAFs issued during May 2011
Canadian Meteorological Aviation Centre/East (Montreal)
Station VFR Category Above IFR Alternate Category Below IFR Alternate Category
Station Station Type Correct Forecasts (hours) Total Forecasts (hours) VFR Reliability Index Correct Forecasts (hours) Total Forecasts (hours) Alternate Reliability Index False Alarms (hours) Total Forecasts (hours) *Below Alternate False Alarm Ratio
Baie Comeau NCA 784 880 89% 897 970 92% 63 122 52%
Bathurst CWO 506 549 92% 529 590 90% 44 115 38%
Big Trout Lake AWOS 707 810 87% 735 848 87% 34 118 29%
Blanc Sablon CWO 736 784 94% 794 841 94% 96 209 46%
Buttonville CWO 689 801 86% 727 831 87% 63 179 35%
Cartwright CWO 831 873 95% 825 866 95% 41 86 48%
Chapleau CWO 353 374 94% 353 374 94% 11 49 NSS
Charlottetown ATS 562 681 83% 768 882 87% 98 298 33%
Chibougamau-Chapais CWO 331 361 92% 354 374 95% 16 30 NSS
Churchill Falls AWOS 709 815 87% 753 839 90% 60 150 40%
Deer Lake ATS 724 813 89% 920 967 95% 56 85 66%
Dorval CWO 1405 1497 94% 1646 1667 99% 11 19 NSS
Dryden NCA 802 848 94% 884 903 98% 14 23 NSS
Earlton CWO 375 391 96% 385 398 97% 12 18 NSS
Fredericton NCA 647 870 74% 927 1051 88% 58 146 40%
Gander CWO 574 763 75% 919 1073 86% 90 236 38%
Gaspé CWO 750 830 90% 795 864 92% 107 173 62%
Gatineau ATS 363 387 94% 382 400 95% 10 37 NSS
Geraldton CWO 794 915 87% 876 973 90% 19 55 35%
Gore Bay NCA 357 403 88% 373 412 91% 31 62 NSS
Halifax ATS 544 799 68% 1001 1291 78% 135 765 18%
Hamilton CWO 698 818 85% 777 900 86% 41 256 16%
Havre St Pierre NCA 663 739 90% 704 790 89% 55 205 27%
Îles de la Madeleine ATS 415 490 85% 447 521 86% 98 277 35%
Inukjuak AWOS/CARS 713 787 91% 810 858 94% 41 85 49%
Ivujivik CARS 126 145 86% 144 159 91% 3 14 NSS
Kapuskasing CWO 802 853 94% 831 869 96% 16 34 NSS
Kenora ATS 794 893 89% 857 924 93% 28 70 40%
Kingston ATS 489 530 92% 569 581 98% 28 43 NSS
Kuujjuaq ATS 816 906 90% 931 976 95% 6 14 NSS
Kuujjuarapik CWO 759 898 85% 858 963 89% 72 125 57%
La Grande IV AWOS/CWO 186 199 93% 197 203 97% 12 16 NSS
La Grande Rivière ATS 782 881 89% 807 906 89% 27 106 25%
London ATS 814 932 87% 967 1040 93% 63 120 52%
Marathon CWO 160 178 90% 160 178 90% 5 30 NSS
Mary's Harbour AWOS/CWO 470 542 87% 509 579 88% 39 132 30%
Mirabel ATS 712 799 89% 875 917 95% 5 21 NSS
Moncton CWO 598 711 84% 935 1031 91% 84 184 46%
Mont-Joli ATS 744 822 90% 790 875 90% 59 228 26%
Moosonee NCA 358 382 94% 373 395 94% 8 27 NSS
Muskoka NCA 571 594 96% 592 615 96% 17 32 NSS
Nain CWO 417 431 97% 339 361 94% 66 124 53%
Natashquan AWOS 631 694 91% 687 749 92% 78 265 30%
North Bay CWO 809 882 92% 867 925 94% 39 94 41%
Ottawa CWO 1283 1408 91% 1557 1576 99% 13 26 NSS
Peterborough NCA 536 596 90% 590 635 93% 24 50 NSS
Pickle Lake CWO 351 381 92% 371 402 92% 10 37 NSS
Puvirnituq CARS 157 181 86% 176 194 90% 10 18 NSS
Quaqtaq CARS 168 179 94% 181 186 97% 9 17 NSS
Quebec City ATS 711 811 88% 864 923 94% 63 102 62%
Red Lake CWO 523 614 85% 585 643 91% 11 34 32%
Roberval CWO 575 583 99% 588 596 99% 20 25 NSS
Rouyn-Noranda ATS 776 849 91% 804 872 92% 27 66 41%
Sable Island AWOS 104 161 65% 148 232 64% 64 373 17%
Saint John ATS 482 664 73% 802 922 87% 105 361 29%
Sarnia NCA 529 589 90% 568 626 91% 16 80 20%
Sault Ste Marie ATS 840 901 93% 914 951 96% 44 99 45%
Schefferville AWOS 762 844 90% 823 886 93% 32 92 35%
Sept-Îles ATS 654 751 87% 729 837 87% 60 201 30%
Sherbrooke NCA 390 429 91% 419 444 94% 32 45 NSS
Sioux Lookout ATS 814 884 92% 871 908 96% 39 66 NSS
St Anthony NCA 634 795 80% 756 918 82% 94 247 38%
St Catharines ATS 202 228 89% 206 240 86% 10 49 NSS
St Hubert NCA 724 827 88% 868 922 94% 40 70 58%
St John's CWO 397 592 67% 824 1008 82% 121 351 34%
Stephenville CWO 833 902 92% 895 963 93% 36 70 51%
Sudbury CWO 770 841 92% 841 892 94% 49 84 58%
Sydney CWO 454 585 78% 652 812 80% 136 566 24%
Tasiujaq CARS 166 178 93% 168 179 94% 5 12 NSS
Thunder Bay ATS/AA 783 856 92% 831 907 92% 23 55 42%
Timmins ATS 768 811 95% 812 837 97% 9 18 NSS
Toronto City Centre NCA 764 836 91% 850 921 92% 90 170 53%
Toronto LBPI CWO 1399 1552 90% 1662 1750 95% 32 86 37%
Val-d'Or AWOS/ATS 774 873 89% 866 921 94% 18 49 36%
Wabush ATS 733 788 93% 828 853 97% 16 32 NSS
Waskaganish CARS 120 123 97% 122 123 99% 14 17 NSS
Waterloo/Wellington NCA 552 615 90% 627 678 93% 30 65 46%
Wawa CWO 179 200 89% 179 198 90% 12 45 NSS
Wiarton CWO 371 434 85% 397 453 88% 16 48 32%
Windsor CWO 806 877 92% 946 984 96% 47 110 43%
Yarmouth CWO 423 561 75% 571 684 84% 95 558 17%
Canadian Meteorological Aviation Centre/West (Edmonton)
Station VFR Category Above IFR Alternate Category Below IFR Alternate Category
Station Station Type Correct Forecasts (hours) Total Forecasts (hours) Reliability Index Correct Forecasts (hours) Total Forecasts (hours) Alternate Reliability Index Incorrect Forecasts (hours) Total Forecasts (hours) *Below Alternate False Alarm Ratio
Abbotsford CWO 831 884 94% 889 913 97% 10 14 NSS
Arctic Bay AWS 106 108 98% 117 117 100% 0 0 NSS
Arviat AWOS/CARS 608 779 78% 710 867 82% 70 216 33%
Baker Lake CARS 839 893 94% 896 920 97% 27 39 NSS
Bella Bella AWOS 393 438 90% 328 405 81% 44 80 55%
Brandon ATS 747 809 92% 799 862 93% 65 120 54%
Buffalo Narrows CWO 388 388 100% 388 388 100% 1 1 NSS
Burwash AWOS/CARS 763 786 97% 727 765 95% 32 46 NSS
Calgary Intl CWO 1397 1468 95% 1621 1625 100% 8 9 NSS
Cambridge Bay CARS 693 856 81% 775 934 83% 81 193 42%
Campbell River ATS 392 407 96% 408 418 98% 2 5 NSS
Cape Dorset AWOS/CARS 710 830 86% 745 846 88% 67 166 40%
Castlegar ATS 418 418 100% 372 383 97% 21 36 NSS
Churchill ATS/AA 620 781 79% 817 943 87% 28 142 20%
Clyde River AWOS/CARS 650 824 79% 669 836 80% 102 226 45%
Coral Harbour CARS 791 845 94% 802 852 94% 22 41 NSS
Cranbrook ATS 803 816 98% 824 827 100% 4 5 NSS
Dauphin NCA 729 831 88% 798 897 89% 41 107 38%
Dawson City CARS 180 182 99% 179 181 99% 1 5 NSS
Dawson Creek NCA 446 450 99% 446 450 99% 1 1 NSS
Deline CARS 123 152 81% 123 152 81% 10 27 NSS
Edmonton Intl CWO 1531 1541 99% 1546 1552 100% 4 8 NSS
Edmonton Muni AWOS 819 832 98% 838 840 100% 9 10 NSS
Eureka CWO 390 391 100% 393 393 100% 2 2 NSS
Faro CARS 176 177 100% 171 171 100% 6 9 NSS
Fort Chipewyan AWOS 193 198 98% 196 198 99% 4 5 NSS
Fort Good Hope CARS 161 166 97% 161 166 97% 1 1 NSS
Fort McMurray AWOS 807 910 89% 898 973 92% 26 58 44%
Fort McPherson CARS 159 165 96% 159 165 96% 9 14 NSS
Fort Nelson ATS 741 805 92% 827 846 98% 11 31 NSS
Fort Simpson CARS 707 770 92% 724 781 93% 21 64 33%
Fort Smith CARS 778 781 100% 789 792 100% 2 3 NSS
Fort St John ATS 821 835 98% 833 841 99% 1 8 NSS
Gillam CWO 689 833 83% 753 893 84% 30 194 15%
Gjoa Haven AWOS/CARS 529 832 64% 620 904 69% 123 351 35%
Grande Prairie ATS 860 882 98% 885 910 97% 6 23 NSS
Hall Beach AWOS/CARS 748 838 89% 809 875 92% 65 129 51%
Hay River CARS 850 876 97% 863 884 98% 7 12 NSS
High Level ATS 845 863 98% 865 874 99% 5 8 NSS
Holman CARS 127 129 99% 129 129 100% 6 7 NSS
Igloolik CARS 251 268 94% 251 268 94% 14 33 NSS
Inuvik ATS/AA 753 860 88% 854 918 93% 16 39 42%
Iqaluit ATS/AA 868 907 96% 911 942 97% 19 35 NSS
Island Lake CWO 727 805 90% 781 863 90% 24 124 19%
Kamloops ATS 877 877 100% 825 844 98% 28 33 NSS
Kelowna NCA 806 808 100% 806 808 100% 3 3 NSS
Kugaaruk CARS 162 181 90% 169 186 91% 7 22 NSS
Kugluktuk CARS 723 842 86% 745 865 86% 52 157 33%
La Ronge ATS 776 820 95% 795 835 95% 10 24 NSS
Lethbridge ATS/AWOS 806 848 95% 860 882 97% 14 35 NSS
Lloydminster ATS/NCA 834 856 98% 849 866 98% 3 13 NSS
Lutselk'e CARS 159 160 99% 159 160 99% 1 4 NSS
Lynn Lake NCA 749 797 94% 789 832 95% 21 63 33%
Mackenzie NCA 624 641 97% 624 641 97% 13 18 NSS
Masset CWO 229 235 98% 238 244 98% 11 18 NSS
Mayo CARS 792 807 98% 779 801 97% 8 16 NSS
Medicine Hat ATS/NCA 793 819 97% 806 835 97% 15 39 NSS
Nanaimo ATS 370 379 98% 373 384 97% 1 5 NSS
Norman Wells ATS 750 790 95% 752 793 95% 38 59 NSS
North Battleford NCA 821 826 99% 824 830 99% 10 11 NSS
Norway House NCA 741 802 92% 779 829 94% 44 85 52%
Old Crow CARS 371 373 99% 371 373 99% 9 9 NSS
Pangnirtung LWIS/CARS 156 163 96% 87 101 87% 34 76 NSS
Paulatuk CARS 169 190 89% 171 192 89% 7 23 NSS
Peace River ATS 849 879 97% 886 893 99% 4 5 NSS
Penticton ATS 803 803 100% 788 789 100% 14 14 NSS
Pond Inlet AWOS/CARS 751 850 88% 756 852 89% 56 89 63%
Port Hardy ATS 821 830 99% 848 849 100% 1 1 NSS
Prince Albert ATS 773 807 96% 812 825 98% 3 8 NSS
Prince George NCA 869 912 95% 914 935 98% 11 19 NSS
Prince Rupert NCA 778 852 91% 853 897 95% 14 36 NSS
Qikiqtarjuaq AWOS/CARS 711 843 84% 502 713 70% 126 284 45%
Quesnel NCA 451 480 94% 449 475 95% 20 44 NSS
Rae Lake CARS 110 116 95% 111 116 96% 7 14 NSS
Rankin Inlet ATS 651 776 84% 728 845 86% 41 142 29%
Red Deer ATS 817 871 94% 869 913 95% 19 48 NSS
Regina ATS/AA 821 871 94% 917 931 98% 5 13 NSS
Repulse Bay CARS 137 159 87% 139 159 87% 4 16 NSS
Resolute CARS 672 822 82% 851 918 93% 48 78 61%
Sachs Harbour CARS 108 119 91% 115 119 97% 3 3 NSS
Sandspit NCA 877 917 96% 941 959 98% 6 10 NSS
Saskatoon ATS/AA 810 855 95% 870 875 99% 5 6 NSS
Slave Lake AWOS 821 868 95% 838 874 96% 45 60 NSS
Smithers ATS/NCA 412 422 98% 412 422 98% 13 18 NSS
Springbank CWO 390 409 95% 424 438 97% 21 29 NSS
Stony Rapids NCA 599 606 99% 606 612 99% 3 8 NSS
Swift Current AWOS 420 481 87% 446 500 89% 21 60 35%
Taloyoak CARS 682 836 82% 750 889 84% 62 206 30%
Terrace ATS 795 833 95% 859 874 98% 18 27 NSS
Teslin CARS 186 188 99% 127 163 78% 2 27 NSS
The Pas CWO 764 851 90% 830 879 94% 29 55 53%
Thompson ATS 753 826 91% 865 905 96% 13 49 27%
Tofino CWO 339 355 96% 345 360 96% 26 41 NSS
Tuktoyaktuk CARS 370 388 95% 394 402 98% 30 35 NSS
Vancouver CWO 1525 1561 98% 1592 1597 100% 1 2 NSS
Victoria CWO 799 817 98% 833 836 100% 4 5 NSS
Victoria Harbour ATS 375 376 100% 375 376 100% 4 7 NSS
Watson Lake CARS 780 797 98% 792 810 98% 6 18 NSS
Whitecourt ATS 185 188 98% 194 196 99% 3 7 NSS
Whitehorse ATS 815 835 98% 833 842 99% 4 8 NSS
Williams Lake ATS 858 945 91% 885 958 92% 20 48 42%
Winnipeg ATS/AA 799 923 87% 1021 1060 96% 27 45 NSS
Yellowknife ATS 764 787 97% 780 802 97% 15 29 NSS
Yorkton CWO 542 600 90% 585 626 93% 24 46 NSS
*Note: NSS stands for Not Statistically Significant