Heard Island site lat/lon = (-53.0000,72.6000) cell lat/lon = (-53.0015,72.5908) Forecast initialized at 2025-09-26/12 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 26 12 1.7 -0.6 29.11 30 35 0 72 000 83 90 91 0 -1 -1 000 1 26 13 1.7 -0.3 29.06 31 45 5 78 000 85 94 95 0 0 -1 001 2 26 14 2.0 0.0 29.01 33 49 8 81 000 85 95 97 0 0 0 000 3 26 15 2.1 0.5 28.96 35 52 6 79 -008 88 99100 0 0 0 015 4 26 16 1.9 1.1 28.91 36 53 4 77 -007 94100100 0 0 0 144 5 26 17 2.7 1.8 28.85 36 56 0 72 -009 93100100 1 0 0 114 6 26 18 3.3 2.6 28.83 37 57 354 66 -019 95100100 2 1 1 111 7 26 19 3.5 2.9 28.78 36 56 351 64 -017 96100100 2 2 1 255 8 26 20 3.8 3.4 28.76 34 54 348 61 -013 97100100 3 2 2 211 9 26 21 3.9 3.7 28.72 30 48 347 59 000 99100100 3 3 2 254 10 26 22 4.0 3.9 28.68 28 49 343 56 -003 99100100 3 3 2 225 11 26 23 3.9 3.8 28.66 26 40 330 43 004 99100100 3 3 2 134 12 27 00 3.2 3.1 28.68 19 28 317 29 -001 100100100 3 2 1 016 13 27 01 2.5 2.4 28.69 13 21 319 32 006 100 93 90 2 2 0 000 14 27 02 2.3 2.2 28.70 15 27 322 35 -001 100 99 71 1 0 0 000 15 27 03 2.2 1.7 28.68 14 23 334 46 -003 96100 70 1 0 0 000 16 27 04 2.1 1.9 28.66 13 21 352 65 001 99100 76 1 0 0 000 17 27 05 2.0 1.9 28.64 11 18 11 84 001 100100101 1 1 0 000 18 27 06 2.1 2.0 28.62 11 18 10 82 002 100100101 2 2 1 001 19 27 07 2.3 2.1 28.59 11 19 358 71 002 100100101 2 2 1 000 20 27 08 2.3 2.2 28.57 12 20 352 64 -002 100100102 2 2 1 000 21 27 09 2.3 2.1 28.54 10 18 343 55 003 100100101 2 1 0 016 22 27 10 1.9 1.8 28.50 9 13 347 59 000 100100101 1 0 0 065 23 27 11 1.7 1.5 28.47 7 10 356 68 000 100100 96 0 0 0 042 24 27 12 1.6 1.5 28.44 5 9 351 64 -006 100100 97 0 0 0 024 25 27 13 1.5 1.4 28.40 4 7 307 20 -009 100 99 99 0 0 0 061 26 27 14 1.3 1.2 28.37 7 9 262 334 -002 100100102 0 0 0 099 27 27 15 1.4 1.1 28.36 12 18 252 325 -002 99100 98 0 0 -1 079 28 27 16 1.5 0.6 28.35 18 24 239 311 003 94 99 83 0 -1 -2 043 29 27 17 1.5 -0.1 28.35 19 26 239 311 002 88 96 63 0 -1 -1 002 30 27 18 1.5 -0.1 28.36 21 28 250 323 006 89 96 70 0 -1 -2 000 31 27 19 1.6 -1.1 28.36 22 30 259 331 -001 80 76 70 0 -1 -1 000 32 27 20 1.4 -1.1 28.38 23 32 267 340 000 81 90 74 0 -1 -2 000 33 27 21 1.5 -1.7 28.39 23 31 273 345 004 77 83 87 0 -1 -2 000 34 27 22 1.4 -1.6 28.39 24 32 282 354 000 78 86 78 0 -1 -2 000 35 27 23 1.5 -1.5 28.40 26 36 286 359 -001 79 86 82 0 -1 -2 000 36 28 00 1.0 -0.8 28.40 27 40 294 7 002 86 93 99 0 -1 -3 019 37 28 01 0.5 -0.4 28.41 26 34 285 357 -012 94 96101 -1 -2 -3 049 38 28 02 1.1 -1.3 28.43 25 34 285 358 000 83 88 70 0 -1 -2 022 39 28 03 0.5 -0.8 28.44 27 39 291 4 -005 90 96 98 -1 -2 -3 120 40 28 04 1.3 -2.4 28.45 28 38 291 4 005 74 81 80 0 -1 -2 002 41 28 05 1.2 -2.0 28.45 27 38 299 12 004 77 86 98 0 -1 -3 000 42 28 06 1.5 -2.3 28.44 28 37 302 14 002 73 80 75 0 -1 -2 000 43 28 07 1.5 -2.5 28.44 30 40 301 14 000 72 78 87 0 -1 -2 000 44 28 08 1.6 -3.1 28.44 28 38 300 12 001 67 72 78 0 -1 -2 000 45 28 09 1.7 -2.8 28.43 29 41 303 16 006 69 73 78 0 -1 -2 000 46 28 10 1.6 -2.4 28.43 33 47 300 13 004 72 80 94 0 -1 -2 000 47 28 11 0.6 -1.4 28.44 30 43 298 11 -003 85 91104 0 -2 -3 032 48 28 12 1.3 -1.7 28.44 29 42 293 6 004 78 86 94 0 -1 -2 038 49 28 13 1.3 -1.6 28.46 31 45 291 4 005 79 84 97 0 -1 -2 012 50 28 14 1.6 -2.1 28.47 29 39 292 4 002 74 81 72 0 -1 -2 000 51 28 15 1.4 -1.9 28.48 30 40 295 7 000 76 84 85 0 -1 -2 000 52 28 16 1.1 -1.3 28.49 28 39 296 9 002 83 93 98 0 -1 -3 000 53 28 17 1.3 -1.8 28.49 28 39 294 6 001 78 85 86 0 -1 -3 000 54 28 18 1.2 -1.6 28.49 29 41 297 9 -001 79 87 79 0 -1 -2 000 55 28 19 1.4 -2.1 28.50 32 43 290 3 005 75 83 91 0 -1 -2 000 56 28 20 0.6 -0.7 28.51 31 44 295 7 -019 91 96102 0 -2 -3 060 57 28 21 0.8 -0.5 28.52 31 44 289 2 002 91 97106 0 -1 -3 133 58 28 22 0.6 -0.4 28.53 30 44 293 5 -033 93 97105 0 -2 -3 074 59 28 23 1.6 -1.7 28.55 32 43 282 355 003 77 86 90 0 -1 -2 048 60 29 00 1.2 -1.2 28.58 31 43 287 359 001 82 89 91 0 -1 -2 002 61 29 01 1.6 -1.5 28.59 31 43 290 3 002 77 85 93 0 -1 -2 010 62 29 02 2.0 -2.3 28.61 35 48 286 359 000 70 77 96 0 0 -2 000 63 29 03 1.1 -0.6 28.64 33 46 290 3 -001 88 94103 0 -1 -2 003 64 29 04 1.5 -1.5 28.66 34 47 284 356 003 78 86 93 0 -1 -2 055 65 29 05 1.6 -1.6 28.68 35 48 289 1 -001 77 85100 0 -1 -2 012 66 29 06 1.7 -1.9 28.69 34 48 289 1 003 74 82 92 0 -1 -2 000 67 29 07 1.2 -1.0 28.73 33 48 288 0 000 84 90 95 0 -1 -2 010 68 29 08 1.4 -1.0 28.74 33 46 292 4 003 82 91 95 0 -1 -2 000 69 29 09 1.6 -1.4 28.76 33 46 289 2 000 78 85 86 0 -1 -2 000 70 29 10 1.1 -0.3 28.78 32 46 291 4 007 90 95102 0 -1 -2 018 71 29 11 1.4 -0.8 28.79 33 47 291 4 000 84 90 95 0 -1 -2 001 72 29 12 1.3 -0.7 28.80 32 46 292 4 000 86 93 98 0 -1 -2 006 73 29 13 1.3 -0.8 28.80 32 46 293 6 000 85 92 92 0 -1 -2 004 74 29 14 0.8 -0.2 28.81 31 46 297 9 -020 92 97104 0 -1 -2 036 75 29 15 1.8 -1.6 28.81 36 50 295 8 003 76 86 91 0 -1 -2 026 76 29 16 1.2 -1.0 28.82 37 51 297 10 000 84 92 99 0 -1 -2 001 77 29 17 1.2 -1.4 28.83 35 47 295 8 003 82 89 91 0 -1 -2 018 78 29 18 1.4 -1.6 28.83 32 43 296 9 004 78 86 88 0 -1 -2 001 79 29 19 1.4 -1.6 28.83 31 42 297 10 002 78 86 90 0 -1 -2 000 80 29 20 1.5 -1.7 28.82 31 43 295 7 002 77 86100 0 -1 -2 001 81 29 21 1.4 -1.5 28.82 30 41 296 9 001 79 88 99 0 -1 -2 000 82 29 22 1.2 -1.0 28.81 28 38 296 9 003 84 95 95 0 -1 -3 000 83 29 23 1.1 -1.1 28.81 27 36 288 1 006 84 94 97 0 -1 -3 004 84 30 00 0.9 -2.5 28.81 25 34 288 1 001 75 81 75 0 -2 -3 000 85 30 01 0.7 -2.2 28.81 27 37 289 2 -002 79 87 94 0 -2 -3 002 86 30 02 0.6 -3.2 28.81 27 35 285 357 002 73 80 92 -1 -2 -3 001 87 30 03 0.7 -2.0 28.81 27 36 289 2 000 80 88 81 -1 -2 -3 011 88 30 04 0.3 -2.1 28.80 28 39 283 356 000 82 91 98 -1 -2 -4 004 89 30 05 0.4 -1.6 28.80 29 39 283 355 -001 85 95 98 -1 -2 -3 019 90 30 06 0.2 -1.9 28.80 30 42 281 353 -003 84 93100 -1 -2 -4 018 91 30 07 0.3 -2.0 28.81 31 43 280 353 000 83 92100 -1 -2 -4 015 92 30 08 0.3 -2.0 28.82 31 43 278 351 000 83 92100 -1 -2 -4 012 93 30 09 0.4 -2.0 28.82 32 43 278 351 000 82 92100 -1 -2 -4 013 94 30 10 0.4 -2.2 28.82 32 45 278 351 -001 81 90 99 -1 -2 -4 015 95 30 11 0.4 -2.3 28.82 32 45 279 351 000 80 88 98 -1 -2 -4 012 96 30 12 0.6 -2.7 28.82 32 45 279 352 001 76 84 96 -1 -2 -3 003 97 30 13 0.5 -2.4 28.81 34 47 281 353 000 79 88 99 -1 -2 -3 005 98 30 14 0.5 -2.1 28.80 34 48 282 355 -002 81 90102 -1 -2 -3 008 99 30 15 0.4 -1.8 28.79 35 49 282 355 -002 84 93102 -1 -2 -3 016 100 30 16 0.5 -1.6 28.78 35 49 280 353 000 84 93103 -1 -2 -3 019 101 30 17 0.6 -1.4 28.78 34 47 278 350 -001 86 94104 -1 -2 -3 020 102 30 18 0.9 -1.5 28.77 34 47 274 347 000 82 91103 0 -2 -3 012 103 30 19 0.9 -1.4 28.78 33 45 267 340 000 83 92100 0 -2 -3 016 104 30 20 0.9 -1.5 28.80 33 45 263 336 000 83 92 93 0 -2 -3 008 105 30 21 0.9 -1.2 28.82 33 46 263 335 001 85 94 96 0 -2 -3 010 106 30 22 0.6 -0.7 28.84 33 46 262 335 000 91 99106 -1 -2 -3 019 107 30 23 1.2 -2.2 28.87 37 52 255 327 005 76 84 81 0 -1 -3 028 108 01 00 0.7 -1.7 28.89 36 51 258 330 -008 82 90101 0 -2 -3 007 109 01 01 0.8 -1.8 28.93 36 50 259 332 002 81 91 90 0 -2 -3 012 110 01 02 0.5 -1.7 28.95 35 48 259 332 -003 84 93104 -1 -2 -3 005 111 01 03 0.5 -1.3 28.97 36 50 256 328 000 87 96104 -1 -2 -3 033 112 01 04 0.9 -2.0 28.99 36 48 254 326 001 79 88 94 0 -2 -3 024 113 01 05 0.7 -1.8 29.01 36 50 255 328 002 82 90 97 0 -2 -3 022 114 01 06 0.9 -1.7 29.04 34 47 254 327 000 81 91 95 0 -2 -3 002 115 01 07 1.0 -2.5 29.07 35 48 252 325 000 75 83 82 0 -2 -3 001 116 01 08 1.0 -2.5 29.10 34 47 252 325 001 75 82 82 0 -2 -3 000 117 01 09 1.2 -2.6 29.13 35 48 251 323 000 73 82 90 0 -1 -3 000 118 01 10 0.8 -2.0 29.16 34 46 248 321 -001 80 89101 0 -2 -3 002 119 01 11 0.6 -1.5 29.20 32 45 247 319 001 85 93106 -1 -2 -3 010 120 01 12 0.8 -1.8 29.23 32 44 243 315 001 80 90 98 0 -2 -3 014 * 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.