Cumulonimbus Average Base Height (meters) June, July, August (1971 - 1996) Night, Land Areas Only Global Average: 833 Zonal Averages 28 zones Lat.N Average 82.5 472 77.5 490 72.5 597 67.5 792 62.5 879 57.5 847 52.5 767 47.5 1015 42.5 1240 37.5 1286 32.5 1204 27.5 897 22.5 834 17.5 857 12.5 1019 7.5 698 2.5 667 -2.5 576 -7.5 618 -12.5 599 -17.5 677 -22.5 718 -27.5 901 -32.5 714 -37.5 640 -42.5 769 -47.5 477 -52.5 573 Grid Box Averages 570 boxes filled with min 30 obs. Box # Lat.N Lon.E Average N.Obs. 2 82.5 20.0 478 72 3 82.5 60.0 470 343 11 77.5 10.0 545 1520 12 77.5 30.0 345 279 14 77.5 70.0 418 885 15 77.5 90.0 436 1097 16 77.5 110.0 501 1055 17 77.5 130.0 408 270 18 77.5 150.0 494 118 29 72.5 10.0 568 1375 30 72.5 30.0 569 8705 31 72.5 50.0 515 1053 32 72.5 70.0 554 1888 33 72.5 90.0 507 1714 34 72.5 110.0 710 2643 35 72.5 130.0 625 3387 36 72.5 150.0 558 1178 37 72.5 170.0 555 140 38 72.5 -170.0 551 144 39 72.5 -150.0 1207 71 40 72.5 -130.0 1165 55 46 72.5 -10.0 311 274 48 67.5 15.0 738 23128 49 67.5 25.0 823 19099 50 67.5 35.0 623 52762 51 67.5 45.0 591 12313 52 67.5 55.0 669 14976 53 67.5 65.0 626 10331 54 67.5 75.0 636 4937 55 67.5 85.0 674 10673 56 67.5 95.0 920 4464 57 67.5 105.0 832 2259 58 67.5 115.0 866 2397 59 67.5 125.0 804 3718 60 67.5 135.0 1004 3943 61 67.5 145.0 849 651 62 67.5 155.0 801 3618 63 67.5 165.0 926 2206 64 67.5 175.0 715 1402 65 67.5 -175.0 806 1318 66 67.5 -165.0 523 210 69 67.5 -135.0 1318 114 70 67.5 -125.0 1468 219 71 67.5 -115.0 1156 48 77 67.5 -55.0 1125 153 80 67.5 -25.0 525 1055 81 67.5 -15.0 954 1174 83 62.5 5.0 702 14688 84 62.5 15.0 796 25046 85 62.5 25.0 842 21699 86 62.5 35.0 671 24885 87 62.5 45.0 685 21692 88 62.5 55.0 748 17522 89 62.5 65.0 758 15257 90 62.5 75.0 725 10839 91 62.5 85.0 765 10716 92 62.5 95.0 890 14761 93 62.5 105.0 849 8354 94 62.5 115.0 940 8275 95 62.5 125.0 933 11906 96 62.5 135.0 987 9771 97 62.5 145.0 1247 7759 98 62.5 155.0 1100 6031 99 62.5 165.0 652 8076 100 62.5 175.0 739 2050 101 62.5 -175.0 534 245 103 62.5 -155.0 1398 315 104 62.5 -145.0 1631 321 105 62.5 -135.0 1397 173 106 62.5 -125.0 1460 253 107 62.5 -115.0 1352 284 108 62.5 -105.0 1134 59 113 62.5 -55.0 791 41 114 62.5 -45.0 888 51 116 62.5 -25.0 530 758 117 62.5 -15.0 626 53 118 62.5 -5.0 417 2061 119 57.5 5.0 717 12088 120 57.5 15.0 710 25746 121 57.5 25.0 691 25183 122 57.5 35.0 747 19037 123 57.5 45.0 784 15336 124 57.5 55.0 835 26374 125 57.5 65.0 786 25621 126 57.5 75.0 762 26260 127 57.5 85.0 747 37704 128 57.5 95.0 837 31080 129 57.5 105.0 970 25011 130 57.5 115.0 1136 23707 131 57.5 125.0 810 14158 132 57.5 135.0 879 6432 133 57.5 145.0 797 3576 134 57.5 155.0 570 7239 135 57.5 165.0 610 6249 139 57.5 -155.0 1083 67 141 57.5 -135.0 788 35 142 57.5 -125.0 1321 320 143 57.5 -115.0 1385 617 144 57.5 -105.0 1242 208 145 57.5 -95.0 1095 102 147 57.5 -75.0 821 43 154 57.5 -5.0 564 3113 155 52.5 5.0 739 12810 156 52.5 15.0 804 30767 157 52.5 25.0 802 23336 158 52.5 35.0 828 21390 159 52.5 45.0 867 11789 160 52.5 55.0 985 15974 161 52.5 65.0 894 15323 162 52.5 75.0 854 22560 163 52.5 85.0 919 41586 164 52.5 95.0 1001 36754 165 52.5 105.0 975 54764 166 52.5 115.0 1046 48790 167 52.5 125.0 905 29529 168 52.5 135.0 877 36601 169 52.5 145.0 675 14378 170 52.5 155.0 604 6270 177 52.5 -135.0 528 381 178 52.5 -125.0 1078 539 179 52.5 -115.0 1383 1103 180 52.5 -105.0 1462 1452 181 52.5 -95.0 1168 295 182 52.5 -85.0 1001 157 183 52.5 -75.0 814 75 184 52.5 -65.0 973 233 185 52.5 -55.0 975 62 189 52.5 -15.0 706 200 190 52.5 -5.0 629 6177 191 47.5 2.5 1002 1905 192 47.5 7.5 854 9122 193 47.5 12.5 990 13379 194 47.5 17.5 1033 10564 195 47.5 22.5 935 29835 196 47.5 27.5 824 21879 197 47.5 32.5 899 13706 198 47.5 37.5 937 14059 199 47.5 42.5 901 12054 200 47.5 47.5 899 2753 201 47.5 52.5 915 1601 202 47.5 57.5 925 4573 203 47.5 62.5 953 3751 204 47.5 67.5 920 2913 205 47.5 72.5 875 4966 206 47.5 77.5 1026 3859 207 47.5 82.5 1355 7522 208 47.5 87.5 1139 6004 209 47.5 92.5 1105 829 210 47.5 97.5 1028 289 211 47.5 102.5 985 4387 212 47.5 107.5 1074 2008 213 47.5 112.5 945 3882 214 47.5 117.5 974 7703 215 47.5 122.5 1011 4039 216 47.5 127.5 1020 5996 217 47.5 132.5 863 13462 218 47.5 137.5 784 11636 219 47.5 142.5 653 9318 220 47.5 147.5 767 345 221 47.5 152.5 697 852 238 47.5 -122.5 1341 130 239 47.5 -117.5 1801 276 240 47.5 -112.5 1747 409 241 47.5 -107.5 1786 556 242 47.5 -102.5 1485 617 243 47.5 -97.5 1426 683 244 47.5 -92.5 1095 340 245 47.5 -87.5 697 159 246 47.5 -82.5 1042 323 247 47.5 -77.5 995 339 248 47.5 -72.5 977 435 249 47.5 -67.5 1022 350 250 47.5 -62.5 896 93 252 47.5 -52.5 885 56 261 47.5 -7.5 644 325 262 47.5 -2.5 698 2470 263 42.5 2.5 879 1224 264 42.5 7.5 771 2083 265 42.5 12.5 713 3076 266 42.5 17.5 944 2270 267 42.5 22.5 1046 11719 268 42.5 27.5 891 12843 269 42.5 32.5 979 1338 270 42.5 37.5 942 3356 271 42.5 42.5 1001 14589 272 42.5 47.5 989 4945 273 42.5 52.5 1145 970 274 42.5 57.5 1121 1755 275 42.5 62.5 1180 899 276 42.5 67.5 1254 2673 277 42.5 72.5 1479 7618 278 42.5 77.5 1061 8740 279 42.5 82.5 1367 6972 280 42.5 87.5 1732 2761 281 42.5 92.5 1723 1859 282 42.5 97.5 1595 956 283 42.5 102.5 1531 2109 284 42.5 107.5 920 2684 285 42.5 112.5 1104 11784 286 42.5 117.5 1152 7582 287 42.5 122.5 1144 5380 288 42.5 127.5 884 5498 289 42.5 132.5 849 6039 290 42.5 137.5 873 39 291 42.5 142.5 567 112 292 42.5 147.5 684 490 310 42.5 -122.5 1901 50 311 42.5 -117.5 2068 124 312 42.5 -112.5 2014 387 313 42.5 -107.5 1620 192 314 42.5 -102.5 1570 720 315 42.5 -97.5 1354 1588 316 42.5 -92.5 1261 432 317 42.5 -87.5 1083 537 318 42.5 -82.5 1032 507 319 42.5 -77.5 1001 504 320 42.5 -72.5 1078 587 321 42.5 -67.5 837 128 322 42.5 -62.5 939 51 333 42.5 -7.5 640 2351 334 42.5 -2.5 754 2084 335 37.5 2.5 753 388 336 37.5 7.5 943 2809 337 37.5 12.5 918 1071 338 37.5 17.5 694 465 339 37.5 22.5 780 505 340 37.5 27.5 886 371 341 37.5 32.5 976 706 342 37.5 37.5 966 408 343 37.5 42.5 1149 250 344 37.5 47.5 929 1450 345 37.5 52.5 958 1178 346 37.5 57.5 1216 1589 347 37.5 62.5 1327 460 348 37.5 67.5 1371 2038 349 37.5 72.5 1231 5576 350 37.5 77.5 1954 2947 351 37.5 82.5 1632 137 352 37.5 87.5 1994 149 353 37.5 92.5 1435 606 354 37.5 97.5 1283 4610 355 37.5 102.5 1170 13412 356 37.5 107.5 1346 6383 357 37.5 112.5 1065 6010 358 37.5 117.5 969 6087 359 37.5 122.5 1044 1275 360 37.5 127.5 766 1934 361 37.5 132.5 485 46 362 37.5 137.5 684 130 363 37.5 142.5 756 99 383 37.5 -117.5 2273 116 384 37.5 -112.5 1626 36 385 37.5 -107.5 2051 295 386 37.5 -102.5 1650 700 387 37.5 -97.5 1407 1302 388 37.5 -92.5 1041 1011 389 37.5 -87.5 970 292 390 37.5 -82.5 1070 716 391 37.5 -77.5 1036 1888 400 37.5 -32.5 620 43 401 37.5 -27.5 489 192 405 37.5 -7.5 746 582 406 37.5 -2.5 800 1208 407 32.5 2.5 1072 223 408 32.5 7.5 1201 477 409 32.5 12.5 931 500 413 32.5 32.5 737 50 414 32.5 37.5 998 41 416 32.5 47.5 1303 75 417 32.5 52.5 1111 35 418 32.5 57.5 1198 133 420 32.5 67.5 1290 183 421 32.5 72.5 1110 2670 422 32.5 77.5 1005 442 423 32.5 82.5 1499 857 424 32.5 87.5 1027 775 425 32.5 92.5 1492 4228 426 32.5 97.5 1269 13647 427 32.5 102.5 1271 16095 428 32.5 107.5 1293 4271 429 32.5 112.5 978 5817 430 32.5 117.5 956 4554 431 32.5 122.5 936 1339 432 32.5 127.5 751 557 433 32.5 132.5 674 129 434 32.5 137.5 512 315 456 32.5 -112.5 1862 384 457 32.5 -107.5 1513 320 458 32.5 -102.5 1315 700 459 32.5 -97.5 1117 656 460 32.5 -92.5 773 786 461 32.5 -87.5 790 610 462 32.5 -82.5 1039 3665 466 32.5 -62.5 526 201 477 32.5 -7.5 981 521 478 32.5 -2.5 997 974 479 27.5 2.5 1553 33 480 27.5 7.5 1332 87 489 27.5 52.5 1148 98 490 27.5 57.5 927 35 491 27.5 62.5 1010 94 492 27.5 67.5 1299 221 493 27.5 72.5 958 415 494 27.5 77.5 827 2712 495 27.5 82.5 684 2339 496 27.5 87.5 1002 5148 497 27.5 92.5 964 3980 498 27.5 97.5 720 6524 499 27.5 102.5 1141 14484 500 27.5 107.5 1006 7713 501 27.5 112.5 986 8999 502 27.5 117.5 1009 5074 503 27.5 122.5 697 1802 515 27.5 -177.5 603 94 527 27.5 -117.5 1040 97 528 27.5 -112.5 845 317 529 27.5 -107.5 778 196 530 27.5 -102.5 782 356 531 27.5 -97.5 656 1283 532 27.5 -92.5 663 939 534 27.5 -82.5 838 3271 535 27.5 -77.5 535 3320 551 22.5 2.5 1502 31 552 22.5 7.5 1540 122 559 22.5 42.5 910 83 561 22.5 52.5 1530 55 562 22.5 57.5 984 149 564 22.5 67.5 792 102 565 22.5 72.5 694 265 566 22.5 77.5 773 1615 567 22.5 82.5 686 1817 568 22.5 87.5 566 3431 569 22.5 92.5 440 5147 570 22.5 97.5 914 6338 571 22.5 102.5 1064 11623 572 22.5 107.5 800 16948 573 22.5 112.5 770 12684 574 22.5 117.5 745 2722 575 22.5 122.5 559 3581 581 22.5 152.5 699 55 601 22.5 -107.5 922 170 602 22.5 -102.5 828 1375 603 22.5 -97.5 579 736 605 22.5 -87.5 701 153 606 22.5 -82.5 643 7976 607 22.5 -77.5 652 3577 608 22.5 -72.5 544 1080 623 17.5 2.5 1335 80 624 17.5 7.5 1430 776 625 17.5 12.5 1553 75 630 17.5 37.5 1159 126 631 17.5 42.5 954 207 637 17.5 72.5 594 826 638 17.5 77.5 718 1033 639 17.5 82.5 802 729 641 17.5 92.5 393 770 642 17.5 97.5 692 10124 643 17.5 102.5 742 20329 644 17.5 107.5 791 4467 645 17.5 112.5 743 863 646 17.5 117.5 464 558 647 17.5 122.5 610 3096 656 17.5 167.5 498 51 672 17.5 -112.5 717 55 674 17.5 -102.5 481 861 675 17.5 -97.5 535 3280 676 17.5 -92.5 689 670 677 17.5 -87.5 677 2846 678 17.5 -82.5 596 970 679 17.5 -77.5 713 4534 680 17.5 -72.5 516 1820 681 17.5 -67.5 510 1052 682 17.5 -62.5 503 224 691 17.5 -17.5 784 273 692 17.5 -12.5 1074 361 693 17.5 -7.5 1317 568 694 17.5 -2.5 1363 546 695 12.5 2.5 995 2879 696 12.5 7.5 1282 3431 697 12.5 12.5 1185 2067 698 12.5 17.5 1230 478 699 12.5 22.5 1199 375 700 12.5 27.5 1626 87 701 12.5 32.5 1654 146 702 12.5 37.5 704 904 703 12.5 42.5 1108 56 704 12.5 47.5 1055 36 709 12.5 72.5 434 141 710 12.5 77.5 726 1462 711 12.5 82.5 761 491 713 12.5 92.5 527 1063 714 12.5 97.5 718 3777 715 12.5 102.5 736 15742 716 12.5 107.5 671 1200 719 12.5 122.5 522 8773 720 12.5 127.5 464 1398 723 12.5 142.5 440 545 748 12.5 -92.5 1155 888 749 12.5 -87.5 904 2537 750 12.5 -82.5 742 327 751 12.5 -77.5 624 328 752 12.5 -72.5 694 784 753 12.5 -67.5 587 792 754 12.5 -62.5 431 1049 755 12.5 -57.5 538 123 763 12.5 -17.5 638 659 764 12.5 -12.5 861 1176 765 12.5 -7.5 1152 2029 766 12.5 -2.5 1001 3734 767 7.5 2.5 521 2037 768 7.5 7.5 593 873 769 7.5 12.5 613 4198 770 7.5 17.5 967 278 771 7.5 22.5 1091 197 772 7.5 27.5 1103 259 774 7.5 37.5 693 660 775 7.5 42.5 787 224 781 7.5 72.5 729 87 782 7.5 77.5 540 644 783 7.5 82.5 671 248 785 7.5 92.5 562 57 786 7.5 97.5 638 4434 787 7.5 102.5 573 7412 788 7.5 107.5 610 728 790 7.5 117.5 456 1400 791 7.5 122.5 512 3104 792 7.5 127.5 513 1166 793 7.5 132.5 463 267 794 7.5 137.5 451 356 797 7.5 152.5 458 84 798 7.5 157.5 503 46 800 7.5 167.5 450 166 801 7.5 172.5 446 172 822 7.5 -82.5 1095 44 823 7.5 -77.5 504 573 824 7.5 -72.5 536 1288 825 7.5 -67.5 537 577 826 7.5 -62.5 442 417 827 7.5 -57.5 536 1186 828 7.5 -52.5 423 143 836 7.5 -12.5 618 167 837 7.5 -7.5 558 1353 838 7.5 -2.5 541 636 840 2.5 7.5 472 2971 841 2.5 12.5 527 879 842 2.5 17.5 1030 298 843 2.5 22.5 1058 219 845 2.5 32.5 774 933 846 2.5 37.5 721 951 853 2.5 72.5 452 148 858 2.5 97.5 526 3778 859 2.5 102.5 441 4875 860 2.5 107.5 466 44 861 2.5 112.5 425 1577 862 2.5 117.5 636 73 863 2.5 122.5 625 295 864 2.5 127.5 471 497 873 2.5 172.5 453 851 879 2.5 -157.5 454 159 895 2.5 -77.5 843 106 898 2.5 -62.5 495 252 899 2.5 -57.5 604 517 900 2.5 -52.5 451 255 909 2.5 -7.5 527 292 910 2.5 -2.5 502 82 912 -2.5 7.5 731 33 913 -2.5 12.5 699 119 914 -2.5 17.5 765 42 916 -2.5 27.5 834 54 917 -2.5 32.5 709 591 918 -2.5 37.5 635 342 919 -2.5 42.5 629 40 922 -2.5 57.5 639 33 931 -2.5 102.5 538 1369 932 -2.5 107.5 529 742 933 -2.5 112.5 656 68 934 -2.5 117.5 601 467 935 -2.5 122.5 614 114 936 -2.5 127.5 542 38 937 -2.5 132.5 468 272 938 -2.5 137.5 464 463 939 -2.5 142.5 456 146 940 -2.5 147.5 522 57 941 -2.5 152.5 567 39 946 -2.5 177.5 452 400 970 -2.5 -62.5 448 80 972 -2.5 -52.5 488 47 990 -7.5 37.5 676 61 1004 -7.5 107.5 636 934 1005 -7.5 112.5 731 280 1006 -7.5 117.5 717 204 1012 -7.5 147.5 588 88 1014 -7.5 157.5 491 601 1015 -7.5 162.5 508 309 1018 -7.5 177.5 463 3014 1020 -7.5 -172.5 729 697 1023 -7.5 -157.5 530 48 1045 -7.5 -47.5 904 45 1048 -7.5 -32.5 785 60 1064 -12.5 47.5 624 34 1074 -12.5 97.5 526 78 1079 -12.5 122.5 521 809 1087 -12.5 162.5 551 205 1088 -12.5 167.5 686 43 1090 -12.5 177.5 495 927 1091 -12.5 -177.5 395 422 1092 -12.5 -172.5 607 81 1093 -12.5 -167.5 486 86 1094 -12.5 -162.5 597 38 1114 -12.5 -62.5 629 109 1135 -17.5 42.5 809 35 1136 -17.5 47.5 659 39 1160 -17.5 167.5 572 58 1162 -17.5 177.5 629 201 1163 -17.5 -177.5 586 287 1164 -17.5 -172.5 718 519 1165 -17.5 -167.5 767 240 1166 -17.5 -162.5 588 43 1170 -17.5 -142.5 466 37 1185 -17.5 -67.5 824 49 1186 -17.5 -62.5 595 65 1207 -22.5 42.5 776 53 1208 -22.5 47.5 694 173 1229 -22.5 152.5 934 51 1232 -22.5 167.5 531 57 1239 -22.5 -157.5 563 31 1243 -22.5 -137.5 471 55 1244 -22.5 -132.5 462 52 1260 -22.5 -52.5 585 35 1261 -22.5 -47.5 945 35 1262 -22.5 -42.5 830 38 1275 -27.5 22.5 1579 40 1276 -27.5 27.5 1238 44 1277 -27.5 32.5 823 55 1280 -27.5 47.5 724 93 1304 -27.5 167.5 618 37 1307 -27.5 -177.5 507 79 1330 -27.5 -62.5 1015 72 1331 -27.5 -57.5 778 508 1332 -27.5 -52.5 668 101 1333 -27.5 -47.5 746 57 1347 -32.5 22.5 994 62 1348 -32.5 27.5 1011 55 1366 -32.5 117.5 614 560 1367 -32.5 122.5 836 35 1370 -32.5 137.5 1248 43 1372 -32.5 147.5 1286 31 1377 -32.5 172.5 329 175 1401 -32.5 -67.5 1013 69 1402 -32.5 -62.5 667 171 1403 -32.5 -57.5 713 603 1404 -32.5 -52.5 588 120 1442 -37.5 137.5 555 254 1443 -37.5 142.5 783 68 1444 -37.5 147.5 522 83 1445 -37.5 152.5 627 41 1449 -37.5 172.5 598 224 1450 -37.5 177.5 825 61 1474 -37.5 -62.5 726 51 1475 -37.5 -57.5 824 34 1516 -42.5 147.5 735 170 1521 -42.5 172.5 849 354 1522 -42.5 177.5 590 44 1523 -42.5 -177.5 558 76 1569 -47.5 52.5 419 31 1592 -47.5 167.5 478 282 1646 -52.5 155.0 597 35 1647 -52.5 165.0 588 123 1659 -52.5 -75.0 604 131 1661 -52.5 -55.0 375 54