Heard Island site lat/lon = (-53.0000,72.6000) cell lat/lon = (-53.0015,72.5908) Forecast initialized at 2025-12-23/12 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 23 12 2.6 -1.2 29.65 15 17 256 329 000 71 77 72 1 0 -1 000 1 23 13 2.6 -1.0 29.65 13 17 257 330 000 74 78 72 1 0 -1 000 2 23 14 2.7 -0.7 29.66 11 16 264 336 000 76 79 75 1 0 -1 000 3 23 15 2.6 -0.4 29.66 10 15 272 345 -001 78 82 81 1 0 -1 000 4 23 16 2.6 -0.2 29.68 11 15 275 348 -001 80 84 85 1 0 -1 000 5 23 17 2.6 -0.2 29.67 11 15 272 344 -002 80 84 83 1 0 -1 000 6 23 18 2.6 -0.2 29.68 11 15 267 340 -002 79 83 78 1 0 -1 000 7 23 19 2.6 -0.3 29.66 10 14 264 336 -001 80 83 77 1 0 -1 000 8 23 20 2.6 -0.3 29.68 11 15 256 329 000 80 84 78 0 0 -1 000 9 23 21 2.5 -0.2 29.68 11 15 254 326 000 81 87 81 0 0 -1 000 10 23 22 2.5 0.1 29.69 10 14 254 327 000 83 89 85 0 0 -1 000 11 23 23 2.6 0.4 29.70 9 13 258 331 000 84 91 85 1 0 -1 000 12 24 00 2.6 0.5 29.71 10 13 263 335 000 85 91 80 1 0 -1 000 13 24 01 2.6 0.7 29.72 10 14 266 339 001 86 90 81 1 0 -1 000 14 24 02 2.7 0.9 29.73 10 14 273 346 001 87 88 83 1 0 -1 000 15 24 03 2.7 1.0 29.73 10 14 280 352 000 87 82 90 1 0 -1 000 16 24 04 2.9 1.1 29.73 9 12 288 0 001 87 66 90 1 0 0 000 17 24 05 2.9 1.5 29.73 9 13 306 19 002 89 74 88 1 0 0 000 18 24 06 2.9 1.5 29.73 12 16 320 33 000 90 89 85 1 0 0 000 19 24 07 2.9 1.6 29.71 13 18 334 46 000 90 78 96 1 0 0 000 20 24 08 2.8 1.9 29.67 15 20 340 52 000 93 98101 1 0 0 002 21 24 09 2.7 2.1 29.64 17 22 342 55 -002 96100 98 1 0 0 032 22 24 10 2.5 2.1 29.61 18 24 332 45 -002 97100101 1 0 0 082 23 24 11 2.4 1.9 29.57 20 28 334 46 -003 96100100 1 0 0 085 24 24 12 3.2 2.6 29.52 21 32 335 48 001 96100100 2 1 1 075 25 24 13 3.6 3.1 29.47 23 35 325 38 000 97100100 2 2 2 056 26 24 14 4.0 3.7 29.43 25 41 314 26 -004 98100100 3 3 2 100 27 24 15 4.3 4.1 29.39 26 42 303 16 -002 99100100 3 3 3 101 28 24 16 4.6 4.4 29.36 26 43 293 5 -004 100100100 4 3 3 013 29 24 17 4.6 4.5 29.37 27 45 282 355 -005 100100100 4 3 3 002 30 24 18 4.5 4.3 29.40 27 43 274 347 -002 100100 98 4 3 2 001 31 24 19 4.1 4.0 29.41 26 41 267 340 -002 100100 94 3 2 1 001 32 24 20 3.3 3.2 29.43 27 38 260 333 -003 100100 85 2 1 0 004 33 24 21 3.0 2.4 29.46 26 36 258 331 -005 96100 69 1 0 0 004 34 24 22 2.8 1.8 29.49 25 34 259 331 -004 92100 70 1 0 0 004 35 24 23 2.8 1.4 29.51 24 32 262 334 -002 90100 77 1 0 -1 003 36 25 00 2.7 1.2 29.52 22 30 260 333 -001 89100 81 1 0 -1 004 37 25 01 2.5 1.0 29.53 21 28 260 333 000 89100100 0 0 -1 004 38 25 02 2.4 0.6 29.53 21 27 262 335 000 87100 97 0 0 -1 002 39 25 03 2.4 0.3 29.54 20 27 267 339 001 85 97105 0 0 -2 000 40 25 04 2.4 0.1 29.55 20 27 271 344 000 84 92105 0 0 -1 000 41 25 05 2.5 0.1 29.54 19 27 277 349 -001 82 87104 1 0 -1 005 42 25 06 2.7 0.1 29.53 19 27 275 347 -002 82 88104 1 0 -1 003 43 25 07 2.7 0.3 29.51 18 25 274 346 -001 82 87104 1 0 -1 005 44 25 08 2.8 0.3 29.50 17 23 275 348 -002 82 82104 1 0 0 004 45 25 09 2.9 0.3 29.50 17 23 277 349 000 81 80104 1 0 0 002 46 25 10 3.0 0.3 29.49 16 24 274 347 -001 80 78104 1 0 0 007 47 25 11 3.1 0.3 29.50 17 25 265 337 000 80 81102 1 0 0 002 48 25 12 3.0 0.5 29.51 18 27 257 330 000 82 89102 1 0 0 000 49 25 13 3.0 0.5 29.53 20 28 257 330 000 82 88 87 1 0 -1 000 50 25 14 3.1 0.6 29.53 20 29 255 328 000 82 89 87 1 0 0 000 51 25 15 3.0 0.3 29.55 22 30 253 326 000 80 87 74 1 0 -1 000 52 25 16 3.0 0.2 29.57 22 32 258 330 001 80 87 80 1 0 -1 000 53 25 17 3.0 0.2 29.58 23 34 261 334 001 80 87 77 1 0 -1 000 54 25 18 3.0 0.4 29.60 25 36 261 334 000 82 91100 1 0 -1 000 55 25 19 3.2 0.3 29.61 25 35 259 332 001 79 86 76 1 0 0 001 56 25 20 3.1 0.4 29.63 26 36 259 331 001 80 88 82 1 0 0 000 57 25 21 3.1 0.4 29.65 24 34 256 329 000 81 87 90 1 0 0 000 58 25 22 3.1 0.6 29.67 24 33 258 330 000 82 87 81 1 0 0 000 59 25 23 3.1 0.7 29.69 23 32 255 327 001 83 90 88 1 0 0 000 60 26 00 3.2 0.4 29.72 23 32 258 330 001 80 81 70 1 0 0 000 61 26 01 3.1 0.3 29.74 23 31 256 328 001 80 86 78 1 0 0 000 62 26 02 3.2 0.3 29.76 22 30 258 330 001 79 84 85 1 0 0 000 63 26 03 3.2 -1.0 29.78 22 29 258 331 000 70 75 81 1 0 -1 000 64 26 04 3.0 -1.0 29.79 20 28 265 337 001 72 80 98 1 0 -1 000 65 26 05 3.0 -0.2 29.80 19 28 263 336 001 76 80 73 1 0 0 001 66 26 06 3.2 0.3 29.82 19 27 263 336 001 79 83 81 1 0 0 000 67 26 07 3.2 0.4 29.84 18 27 267 340 001 79 80 75 1 0 0 000 68 26 08 3.2 0.5 29.85 18 26 272 344 000 80 74 74 1 0 0 000 69 26 09 3.2 1.0 29.86 17 24 275 348 000 84 86 77 1 0 0 000 70 26 10 3.1 1.2 29.87 17 23 276 348 001 86 92 77 1 0 0 000 71 26 11 2.9 1.0 29.88 15 20 278 351 001 86 81 91 1 0 0 000 72 26 12 2.9 1.4 29.88 13 19 283 355 000 89 87 95 1 0 0 000 73 26 13 3.0 1.9 29.88 12 19 281 353 000 92 86 90 1 0 0 000 74 26 14 3.0 1.7 29.88 12 18 279 352 000 90 72 97 1 0 0 000 75 26 15 3.0 1.9 29.88 12 19 287 0 000 91 92 85 1 0 0 000 76 26 16 3.1 2.2 29.89 12 19 297 10 000 93 99 82 1 0 0 000 77 26 17 3.1 2.1 29.88 15 22 303 15 000 92 98 84 1 0 0 000 78 26 18 2.6 1.9 29.88 18 23 305 18 001 95100 84 1 0 0 000 79 26 19 2.8 2.0 29.86 18 26 312 24 000 94100 89 1 0 0 000 80 26 20 3.0 1.6 29.85 19 28 312 25 -002 89 96 96 1 0 0 000 81 26 21 3.2 1.6 29.84 19 30 315 28 000 88 87104 2 1 0 000 82 26 22 3.3 1.1 29.83 20 31 321 34 -001 84 84104 2 1 0 002 83 26 23 3.1 1.4 29.82 24 34 315 28 -003 88 97103 1 0 0 018 84 27 00 2.9 1.6 29.82 24 34 312 25 -001 91 99100 1 0 0 034 85 27 01 2.9 1.7 29.81 24 34 313 25 000 92 99 99 1 0 0 039 86 27 02 3.0 1.6 29.80 24 34 312 24 001 90 99100 1 0 0 015 87 27 03 3.1 1.7 29.79 23 33 313 25 001 90 99 99 1 0 0 002 88 27 04 3.3 1.8 29.78 23 33 313 26 000 89 99 98 2 0 0 000 89 27 05 3.3 1.9 29.78 23 34 312 25 -001 89 98 99 2 0 0 000 90 27 06 3.4 1.8 29.77 23 34 313 25 -001 88 97 99 2 1 0 000 91 27 07 3.4 1.9 29.77 23 35 313 25 -001 88 98 99 2 1 0 000 92 27 08 3.4 1.9 29.76 23 34 313 25 -002 89 98100 2 1 1 000 93 27 09 3.5 2.1 29.76 22 33 312 24 -003 90 95100 2 1 2 000 94 27 10 3.5 2.2 29.74 21 32 312 24 000 90 92100 2 1 2 000 95 27 11 3.5 2.3 29.75 21 32 309 21 000 91 97 99 2 1 1 000 96 27 12 3.4 2.3 29.74 19 30 308 21 000 92 93 97 2 1 2 000 97 27 13 3.4 2.4 29.72 18 28 314 27 000 92 92 90 2 2 3 000 98 27 14 3.3 2.4 29.71 16 25 315 27 000 93 90 95 2 2 3 000 99 27 15 3.2 2.5 29.70 15 23 316 29 000 94 91 95 2 2 2 000 100 27 16 3.2 2.5 29.69 15 21 322 35 000 95 95 93 2 1 2 000 101 27 17 3.0 2.3 29.67 14 19 326 38 000 95100 93 1 0 2 000 102 27 18 2.8 2.2 29.65 14 17 338 51 -001 96 99 94 1 0 2 000 103 27 19 2.7 2.2 29.62 13 17 351 64 000 96 93 88 1 1 2 000 104 27 20 2.9 2.3 29.58 13 19 2 74 -001 96100 79 1 0 1 005 105 27 21 2.7 2.6 29.54 14 18 9 82 -004 100 97 78 1 1 1 033 106 27 22 2.6 2.4 29.46 13 16 37 109 -006 100 83 87 1 1 0 015 107 27 23 2.6 2.2 29.40 14 18 54 126 -005 97 91 90 1 1 0 063 108 28 00 2.6 2.2 29.36 17 22 58 130 -006 97 98100 1 1 0 149 109 28 01 2.7 2.3 29.29 17 24 84 157 004 97 98100 1 1 1 107 110 28 02 2.9 2.3 29.18 20 30 94 167 -010 96100 99 1 2 2 076 111 28 03 3.1 2.6 29.13 18 25 101 173 -007 97100 99 2 2 2 288 112 28 04 3.2 2.9 29.05 16 21 110 183 005 98100 99 2 3 4 281 113 28 05 3.2 3.0 29.02 14 17 135 208 004 100100100 3 4 5 060 114 28 06 3.1 2.8 28.98 17 22 143 215 -015 98100 97 3 4 5 133 115 28 07 2.9 2.4 28.98 19 25 145 218 -032 97 99 97 2 4 5 017 116 28 08 2.9 2.3 28.96 19 25 134 206 002 96 97 99 2 4 5 001 117 28 09 2.9 2.2 28.95 18 24 132 205 -002 96 96100 2 4 5 000 118 28 10 2.9 2.4 28.94 17 22 132 204 000 96100100 2 4 4 000 119 28 11 3.0 2.5 28.92 16 20 132 205 -002 97100100 2 4 5 000 120 28 12 2.9 2.8 28.90 14 18 133 206 001 100100100 2 4 5 000 * 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.