Heard Island site lat/lon = (-53.0000,72.6000) cell lat/lon = (-53.0015,72.5908) Forecast initialized at 2026-06-12/12 UTC MPAS cell scale: 17.3 km FCST UTC UTC T Td Altim Spd Gust Dir Grid VVV RH1RH2RH3 T1T2T3 ACCUM HR DAY HR (C) (C) (in Hg)(kts)(kts)(deg)(deg) (*) (% wrt water) (C) (*) 0 12 12 2.4 2.1 29.50 19 20 312 25 000 97 99 97 1 0 -1 000 1 12 13 2.3 1.5 29.49 19 25 323 36 -001 94100 99 0 0 -1 012 2 12 14 2.1 1.4 29.46 19 26 337 49 000 95100102 0 0 0 012 3 12 15 2.5 1.7 29.45 20 29 343 56 -001 95100101 1 0 0 002 4 12 16 3.3 2.8 29.42 19 29 332 45 001 96100100 2 2 1 000 5 12 17 3.9 3.8 29.44 20 32 299 11 -002 99100100 3 2 2 021 6 12 18 3.9 3.8 29.42 20 34 297 9 -003 99100100 3 3 2 029 7 12 19 4.1 3.9 29.42 21 35 291 3 -001 100100 98 3 3 2 011 8 12 20 4.1 4.0 29.42 21 35 289 2 -001 100100100 3 3 2 002 9 12 21 4.1 4.0 29.44 20 34 289 2 000 100100 98 3 3 2 001 10 12 22 4.1 3.9 29.43 20 34 295 7 -002 100100100 3 3 2 000 11 12 23 4.1 4.0 29.45 20 35 297 10 -001 100100 99 3 3 3 000 12 13 00 4.2 4.1 29.45 20 35 301 13 -002 100100 96 4 3 3 000 13 13 01 4.2 4.1 29.44 19 34 307 20 -003 100100100 4 4 3 000 14 13 02 4.3 4.2 29.44 21 37 312 25 000 100100100 4 4 4 001 15 13 03 4.5 4.3 29.43 22 37 315 28 -003 100100100 4 4 5 002 16 13 04 4.8 4.7 29.41 24 42 316 29 002 100100100 4 4 4 014 17 13 05 5.0 4.9 29.39 26 45 314 27 -003 100100100 5 4 4 010 18 13 06 5.1 4.9 29.39 27 47 312 25 -004 100100 99 5 5 5 004 19 13 07 5.2 5.0 29.37 29 50 316 29 -007 99100 98 5 4 4 000 20 13 08 5.0 4.9 29.34 29 51 318 30 -002 100100 99 4 4 4 001 21 13 09 5.1 5.0 29.31 30 51 319 32 -007 100100100 5 4 5 002 22 13 10 5.2 5.1 29.29 30 51 321 34 -005 100100100 5 5 5 001 23 13 11 5.7 5.6 29.26 28 51 324 36 -006 99100 99 6 6 6 000 24 13 12 6.5 6.4 29.23 28 52 321 33 -003 99100 99 7 7 7 000 25 13 13 6.3 6.2 29.19 27 53 331 44 -004 99100100 7 8 9 001 26 13 14 6.9 6.8 29.17 32 56 321 34 -006 99100 94 7 8 7 010 27 13 15 6.9 6.8 29.16 29 54 321 34 -005 99100100 8 8 8 004 28 13 16 7.0 6.9 29.14 30 54 322 34 -008 99100100 8 8 8 001 29 13 17 7.0 6.9 29.14 29 54 320 32 000 99100100 8 8 8 001 30 13 18 6.7 6.6 29.11 27 51 326 39 000 99100100 8 8 8 004 31 13 19 6.7 6.6 29.07 25 49 325 37 -005 99100 96 8 8 9 000 32 13 20 6.3 6.2 29.03 25 48 337 49 -011 99100100 7 9 9 001 33 13 21 6.2 6.1 28.98 23 45 340 53 -075 99100 99 7 8 8 156 34 13 22 6.6 6.5 28.93 26 50 334 47 004 99100 99 8 8 8 386 35 13 23 6.3 6.2 28.87 24 44 344 57 000 99100 67 7 8 8 003 36 14 00 6.7 6.6 28.83 27 51 341 54 -002 99100 92 8 9 8 006 37 14 01 7.0 6.9 28.77 27 54 341 53 -001 99100 91 8 8 8 025 38 14 02 7.0 6.9 28.72 28 49 334 47 000 99100 91 8 7 7 001 39 14 03 5.6 5.4 28.72 31 47 310 22 -016 99100 85 5 4 3 013 40 14 04 4.1 3.0 28.70 29 43 315 27 005 92 99 67 2 1 0 020 41 14 05 3.7 1.3 28.65 28 46 326 38 -004 83 91 89 2 1 0 000 42 14 06 3.7 1.0 28.61 32 48 332 44 -006 81 88 88 2 1 0 000 43 14 07 3.8 0.7 28.52 35 53 339 52 -002 78 85 94 2 1 0 000 44 14 08 3.9 0.3 28.45 40 57 335 47 -001 76 85 97 2 1 0 001 45 14 09 3.2 0.7 28.39 41 57 333 46 000 82 92100 1 0 0 014 46 14 10 2.7 0.8 28.32 39 56 331 43 -001 86 94104 1 0 -1 018 47 14 11 2.8 0.7 28.29 36 51 320 33 001 85 95 99 1 0 -1 006 48 14 12 3.2 0.4 28.27 37 53 314 26 000 80 90103 1 0 0 004 49 14 13 2.8 1.2 28.32 39 54 282 354 000 89 98104 1 0 -1 030 50 14 14 2.1 -1.4 28.43 45 65 264 336 008 75 81 95 0 0 -2 006 51 14 15 2.2 -1.9 28.55 42 57 266 338 000 72 79 91 0 -1 -2 000 52 14 16 1.4 -1.6 28.64 40 56 267 339 001 78 86 96 0 -1 -3 007 53 14 17 1.5 -2.7 28.71 39 52 271 344 002 71 77 84 0 -1 -3 002 54 14 18 1.7 -3.3 28.77 34 46 270 343 000 66 70 80 0 -1 -3 000 55 14 19 1.0 -1.0 28.81 35 48 281 353 000 85 93 92 0 -2 -3 011 56 14 20 1.1 -1.9 28.85 35 47 276 348 000 78 87 94 0 -2 -3 001 57 14 21 1.6 -2.8 28.88 34 45 278 351 006 70 76 76 0 -1 -3 004 58 14 22 1.3 -3.6 28.90 32 44 271 344 000 66 70 82 0 -1 -3 000 59 14 23 1.0 -1.6 28.92 31 42 269 341 -023 81 87 98 0 -2 -3 009 60 15 00 1.5 -2.2 28.95 32 42 271 343 -010 74 81 92 0 -1 -3 004 61 15 01 1.4 -2.7 28.99 29 38 267 339 003 71 71 54 0 -1 -2 058 62 15 02 1.6 -2.4 29.03 31 41 268 341 005 72 81 92 0 -1 -3 000 63 15 03 1.6 -3.3 29.06 30 39 265 338 004 66 70 72 0 -1 -3 001 64 15 04 1.6 -2.5 29.09 29 40 266 338 000 71 77 88 0 -1 -3 000 65 15 05 1.9 -3.5 29.12 31 39 271 344 004 64 69 75 0 -1 -2 000 66 15 06 1.2 -0.3 29.14 25 38 290 3 -001 89 93100 0 -1 -2 013 67 15 07 1.9 0.2 29.13 30 43 289 2 -001 88 96101 0 -1 -2 004 68 15 08 2.2 0.3 29.12 32 47 295 7 000 86 92103 0 0 -1 009 69 15 09 2.4 0.0 29.11 33 47 301 14 -002 83 91102 0 0 -1 006 70 15 10 1.9 1.1 29.10 32 47 304 16 -006 94100104 0 0 -1 038 71 15 11 2.9 1.0 29.08 37 51 296 8 000 86 96102 1 0 0 047 72 15 12 3.1 0.8 29.09 31 43 291 3 000 83 93104 1 0 0 000 73 15 13 3.0 0.4 29.10 30 41 287 359 000 81 87 80 1 0 -1 001 74 15 14 3.1 0.5 29.10 28 40 295 7 -002 81 90 92 1 0 -1 000 75 15 15 2.5 1.3 29.11 27 38 300 12 -004 91 98103 0 0 -1 013 76 15 16 2.6 1.3 29.10 27 39 301 14 -002 90 97103 1 0 0 052 77 15 17 2.6 1.4 29.09 25 35 299 11 001 91 98102 1 0 0 008 78 15 18 1.9 1.5 29.07 22 32 301 14 -020 98100103 0 0 -1 088 79 15 19 2.3 1.4 29.06 26 38 297 9 000 94100104 0 0 -1 226 80 15 20 2.6 1.5 29.05 27 37 306 19 -012 92 99104 1 0 0 026 81 15 21 3.3 0.9 29.04 28 38 299 12 -004 83 91101 1 0 0 056 82 15 22 2.9 1.1 29.04 26 37 304 16 000 87 95 99 1 0 -1 070 83 15 23 2.7 0.9 29.04 25 32 292 5 -004 87 96101 1 0 -1 012 84 16 00 2.6 0.6 29.07 24 33 283 356 -007 86 94101 1 0 -1 067 85 16 01 2.7 -0.2 29.10 24 32 273 345 000 79 86 90 1 0 -1 011 86 16 02 2.7 -1.0 29.13 24 32 272 344 000 74 79 69 1 0 -1 006 87 16 03 2.9 -1.6 29.16 23 32 275 348 001 69 73 78 1 0 -1 000 88 16 04 2.7 -0.5 29.19 25 33 282 355 000 77 85 82 1 0 -1 000 89 16 05 2.1 0.4 29.21 24 32 287 0 002 87 94 88 0 0 -1 000 90 16 06 2.3 0.1 29.22 24 31 291 3 000 84 92 82 0 0 -1 000 91 16 07 2.7 -0.5 29.23 23 32 293 6 -001 77 83 90 1 0 -1 000 92 16 08 2.8 -0.8 29.23 23 31 298 11 000 75 81 81 1 0 -1 000 93 16 09 2.5 -0.0 29.23 23 31 306 18 -001 82 92101 0 0 -1 000 94 16 10 1.8 1.0 29.22 23 33 317 29 -002 94 98105 0 0 -1 040 95 16 11 2.3 1.0 29.22 21 27 314 27 000 90 93 94 0 0 -1 027 96 16 12 1.8 1.3 29.22 17 22 316 28 002 96100104 0 0 -1 028 97 16 13 2.7 1.3 29.22 17 24 300 13 005 89100102 1 0 0 007 98 16 14 2.6 1.6 29.23 20 28 302 14 -012 93 99104 1 0 0 083 99 16 15 2.9 1.3 29.26 20 26 280 353 000 88 97104 1 0 -1 017 100 16 16 2.9 1.3 29.28 17 24 275 347 001 88 97104 1 0 0 009 101 16 17 3.1 1.3 29.30 17 24 275 348 000 87 94102 1 0 0 005 102 16 18 3.1 1.3 29.33 17 23 271 343 001 87 97 96 1 0 0 000 103 16 19 3.0 1.3 29.35 16 22 266 339 003 87 96 89 1 0 -1 000 104 16 20 3.1 1.3 29.38 15 20 277 350 002 87 96 84 1 0 -1 000 105 16 21 2.9 0.8 29.40 16 21 281 353 003 84 94 84 1 0 -1 000 106 16 22 2.9 0.8 29.41 16 22 283 356 000 84 92 90 1 0 -1 000 107 16 23 2.9 0.4 29.42 17 23 298 11 000 82 84 84 1 0 -1 000 108 17 00 2.9 0.6 29.42 18 23 311 24 000 83 85 79 1 0 0 000 109 17 01 2.9 0.6 29.42 19 26 324 37 000 83 85 89 1 0 0 000 110 17 02 2.8 1.0 29.40 23 31 331 44 000 87 96 95 1 0 -1 003 111 17 03 2.7 1.8 29.38 25 35 337 49 -002 93100102 1 0 0 021 112 17 04 2.9 2.1 29.36 27 38 335 48 -001 94100101 1 0 0 056 113 17 05 3.2 2.3 29.34 27 39 330 43 000 94100101 1 0 0 057 114 17 06 3.3 2.4 29.33 27 39 328 40 -003 94100101 2 1 0 060 115 17 07 3.5 2.7 29.31 27 40 324 37 -002 94100101 2 1 0 054 116 17 08 3.7 2.9 29.30 27 40 318 31 -002 94100101 2 1 0 030 117 17 09 3.7 3.0 29.29 27 40 318 31 -002 95100100 2 1 1 033 118 17 10 3.8 2.9 29.28 27 41 316 28 001 94100100 2 1 1 025 119 17 11 3.7 2.9 29.27 28 41 314 27 000 95100100 2 1 0 003 120 17 12 3.5 2.5 29.27 28 41 313 25 000 93100101 2 1 0 000 * NOTES on units: VVV (vertical velocity) is given as tenths of a microbar per second at 700 hPa, with positive values indicating upward motion; ACCUM (accumulated precipitation, past 3h) is given as hundredths of a millimeter; RH1, RH2, and RH3 are the % RH at the surface, 1000', and 3000', respectively; T1, T2, and T3 are the temperatures at 500', 1000', and 1500', respectively. Gust is estimated according to the NCEP HRRR gust algorithm.