Heard Island site lat/lon = (-53.0000,72.6000) cell lat/lon = (-53.0015,72.5908) Forecast initialized at 2026-05-01/00 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 01 00 3.9 3.7 28.99 14 17 8 80 000 99 99 94 5 6 7 000 1 01 01 4.1 3.9 28.94 15 23 357 70 000 100100 94 5 6 8 000 2 01 02 4.3 4.2 28.94 15 26 350 63 -002 100100 99 5 7 7 000 3 01 03 4.3 4.2 28.88 15 25 358 71 -001 100100100 5 7 7 000 4 01 04 4.5 4.3 28.86 18 33 347 59 -002 100100100 4 5 6 019 5 01 05 4.9 4.8 28.86 24 37 309 21 -002 100100100 4 3 2 040 6 01 06 3.7 2.6 28.91 30 43 268 340 -003 92100100 2 1 0 111 7 01 07 3.9 0.8 28.96 32 43 272 345 000 78 85104 2 1 0 011 8 01 08 3.9 0.8 28.98 30 42 279 352 003 78 86 90 2 1 0 000 9 01 09 3.8 0.6 29.03 30 42 285 358 004 77 84 83 2 1 0 000 10 01 10 3.8 0.9 29.07 29 41 290 3 002 79 88 97 2 1 0 000 11 01 11 3.7 0.7 29.10 30 41 292 5 003 79 87 82 2 0 0 000 12 01 12 3.9 0.5 29.12 29 41 298 10 001 76 82 84 2 1 0 000 13 01 13 3.8 0.2 29.15 30 41 300 12 000 75 83 96 2 0 0 000 14 01 14 3.3 1.2 29.17 30 41 308 21 -001 85 94 98 1 0 0 002 15 01 15 2.9 1.4 29.17 30 45 306 19 -002 89 95104 1 0 0 167 16 01 16 3.3 1.2 29.18 32 45 308 21 000 85 93 93 1 0 0 013 17 01 17 3.8 0.9 29.18 32 44 306 19 000 80 87 94 2 1 0 000 18 01 18 4.0 0.5 29.18 31 46 308 20 001 76 82 92 2 1 0 000 19 01 19 3.8 0.9 29.19 35 49 310 23 002 80 89 95 2 0 0 000 20 01 20 3.4 1.5 29.19 34 49 311 23 -001 87 95101 1 0 0 003 21 01 21 3.8 1.2 29.19 34 49 305 18 -001 82 88 93 2 1 0 009 22 01 22 3.5 1.7 29.18 35 51 311 24 -017 87 98102 2 0 0 013 23 01 23 4.1 0.6 29.20 37 51 294 6 001 76 82 87 2 1 0 055 24 02 00 3.8 0.9 29.21 35 50 300 13 -005 79 91 99 2 0 0 004 25 02 01 4.4 0.0 29.22 39 54 290 3 000 70 76 96 3 1 0 043 26 02 02 4.0 0.8 29.25 35 49 296 8 003 77 85 96 2 1 0 000 27 02 03 4.1 0.1 29.28 36 50 293 6 000 73 78 89 2 1 0 000 28 02 04 3.7 0.7 29.31 35 48 294 6 000 79 86 77 2 0 0 000 29 02 05 3.5 0.6 29.34 35 48 289 2 002 79 87 62 2 0 0 000 30 02 06 3.9 -0.0 29.36 33 46 289 1 002 73 80 91 2 1 0 000 31 02 07 3.8 0.5 29.39 33 47 291 3 002 77 85 86 2 1 0 000 32 02 08 3.7 0.7 29.41 34 48 288 1 000 79 86 84 2 0 0 000 33 02 09 3.6 0.6 29.43 34 48 287 0 000 79 86 80 2 0 0 000 34 02 10 3.6 0.6 29.46 34 47 286 359 000 79 86 92 2 0 0 002 35 02 11 3.4 0.5 29.48 33 45 284 357 000 79 86 76 1 0 0 000 36 02 12 3.3 0.6 29.51 33 48 284 356 000 81 90104 1 0 0 006 37 02 13 3.4 0.4 29.54 32 45 281 353 000 79 86 89 1 0 0 004 38 02 14 3.8 -0.3 29.57 31 43 283 355 000 72 78 78 2 0 0 000 39 02 15 3.3 0.7 29.60 30 41 283 355 001 81 88 87 1 0 0 000 40 02 16 3.2 0.4 29.60 29 40 283 355 000 80 86 86 1 0 0 000 41 02 17 2.8 1.1 29.62 28 40 277 349 001 87 93 99 1 0 -1 010 42 02 18 3.6 0.4 29.63 28 38 283 355 000 78 86 94 2 0 0 004 43 02 19 2.5 1.4 29.65 28 40 285 358 -008 93 96104 0 0 -1 037 44 02 20 3.8 -0.1 29.66 28 37 280 352 -001 73 79 75 2 0 0 023 45 02 21 2.4 1.6 29.67 27 38 279 352 -007 94 97104 0 0 -1 071 46 02 22 3.5 -0.3 29.68 26 35 271 344 000 73 79 76 2 0 0 015 47 02 23 2.9 0.3 29.71 27 37 277 349 -002 81 88 86 1 0 -1 000 48 03 00 3.1 0.2 29.72 27 36 276 348 000 79 90100 1 0 -1 000 49 03 01 2.4 0.8 29.74 27 39 270 342 000 88 91102 0 0 -1 089 50 03 02 2.6 0.3 29.76 25 35 263 336 000 84 86 95 0 0 -1 002 51 03 03 3.3 -0.6 29.78 24 32 266 339 000 73 77 72 1 0 -1 000 52 03 04 2.3 0.5 29.80 25 34 263 335 000 87 93105 0 0 -1 003 53 03 05 3.0 -0.2 29.82 24 32 260 333 -001 77 82 80 1 0 -1 016 54 03 06 3.2 -1.0 29.86 23 30 254 326 000 71 75 81 1 0 -1 000 55 03 07 3.2 -1.7 29.89 21 28 255 328 000 67 70 57 1 0 -1 000 56 03 08 3.2 -1.5 29.91 21 28 256 329 002 68 71 63 1 0 -1 000 57 03 09 3.0 -1.0 29.93 21 27 256 329 003 73 76 75 1 0 -1 000 58 03 10 2.9 -0.3 29.96 19 25 254 327 001 77 79 70 1 0 -1 000 59 03 11 3.1 0.1 29.97 17 23 259 332 000 79 86 74 1 0 -1 000 60 03 12 3.0 0.1 30.00 16 21 260 333 000 79 85 78 1 0 -1 000 61 03 13 3.0 -0.3 30.01 15 19 256 328 001 77 76 76 1 0 0 000 62 03 14 3.0 -0.4 30.03 14 19 253 325 000 76 80 68 1 0 -1 000 63 03 15 3.1 -0.5 30.06 13 18 245 318 001 75 82 70 1 0 -1 000 64 03 16 3.0 -0.1 30.06 11 15 231 303 005 78 86 80 1 0 -1 000 65 03 17 2.9 0.0 30.08 8 10 229 302 003 80 88 78 1 0 -1 000 66 03 18 2.8 -0.3 30.08 4 6 225 298 005 79 85 78 1 0 -1 000 67 03 19 2.8 -0.6 30.08 2 3 213 286 003 78 81 78 1 0 -1 000 68 03 20 2.8 -0.6 30.08 0 2 55 128 003 78 81 78 1 0 -1 000 69 03 21 2.8 -0.4 30.08 2 4 63 135 001 79 80 79 1 0 -1 000 70 03 22 2.8 -0.3 30.07 4 7 57 130 000 79 80 79 1 0 -1 000 71 03 23 2.7 -0.3 30.06 6 9 68 141 -001 79 79 78 1 0 -1 000 72 04 00 2.7 -0.1 30.04 9 11 73 145 000 80 75 77 1 0 0 000 73 04 01 2.8 0.1 30.02 12 14 69 142 001 81 76 78 1 0 0 000 74 04 02 2.9 0.1 30.01 14 17 67 139 001 81 73 74 1 0 0 000 75 04 03 2.9 -0.1 29.99 16 21 72 144 002 79 69 76 1 0 0 000 76 04 04 2.9 -0.3 29.98 18 24 74 146 001 77 72 76 1 0 -1 000 77 04 05 2.9 -0.4 29.95 20 27 78 150 001 76 78 75 1 0 -1 000 78 04 06 3.0 -0.9 29.92 22 30 80 152 009 73 76 78 1 0 -1 000 79 04 07 3.0 -1.4 29.88 24 32 80 152 003 69 73 85 1 0 -1 000 80 04 08 2.8 -1.2 29.85 25 34 78 151 -002 72 79101 1 0 -1 000 81 04 09 1.5 0.8 29.80 27 38 84 156 -001 96 97101 0 -1 -2 064 82 04 10 1.6 1.0 29.74 29 42 89 161 -002 96100101 0 -1 -1 168 83 04 11 1.8 1.1 29.68 31 45 86 159 -003 95 99102 0 0 -1 165 84 04 12 2.0 1.1 29.62 33 47 83 156 -001 94100102 0 0 -1 114 85 04 13 2.1 1.1 29.55 35 50 84 156 001 93100101 0 0 -1 087 86 04 14 2.5 1.3 29.50 32 45 83 156 -001 91 99 98 0 0 0 244 87 04 15 3.3 2.0 29.41 31 42 80 153 004 91100100 1 0 0 612 88 04 16 3.7 2.9 29.34 26 37 75 147 -011 95100100 2 1 1 147 89 04 17 4.2 4.0 29.27 22 33 65 137 -003 99100100 3 4 4 183 90 04 18 4.8 4.7 29.21 20 32 53 126 008 100100 97 5 5 6 003 91 04 19 5.4 5.3 29.18 21 35 26 99 000 99100100 6 7 6 005 92 04 20 5.4 5.3 29.14 19 31 31 103 -013 99100100 6 7 7 227 93 04 21 5.4 5.3 29.11 19 34 32 104 -002 99100100 6 6 6 387 94 04 22 5.2 5.1 29.07 18 33 30 103 -011 100100100 5 5 5 354 95 04 23 5.1 5.0 29.03 17 35 21 94 000 100100100 5 5 6 113 96 05 00 5.0 4.8 28.99 15 29 13 85 000 100100 99 5 6 7 083 97 05 01 4.8 4.7 28.94 14 26 18 90 004 100100 95 5 7 8 058 98 05 02 4.8 4.6 28.91 13 25 11 83 030 100100 91 5 6 8 058 99 05 03 4.5 4.4 28.88 10 17 16 89 -003 100100 96 5 6 7 041 100 05 04 4.4 4.3 28.84 12 19 13 86 -008 100100100 5 7 8 061 101 05 05 4.5 4.4 28.80 12 21 347 59 003 100 98 99 7 8 8 195 102 05 06 4.6 4.4 28.77 14 22 337 49 000 100100 99 6 7 8 002 103 05 07 4.3 4.1 28.74 15 21 332 45 000 100100100 4 5 6 000 104 05 08 3.9 3.8 28.70 13 16 335 47 000 100 96100 5 7 6 000 105 05 09 3.8 3.7 28.67 12 17 332 44 000 100 98100 4 6 6 000 106 05 10 3.2 3.1 28.66 22 30 299 12 000 100100100 2 0 0 018 107 05 11 3.0 2.9 28.62 17 22 299 11 001 100100100 1 0 0 000 108 05 12 3.5 2.0 28.60 20 27 308 21 -001 89 96103 2 0 0 001 109 05 13 3.3 1.3 28.58 21 28 314 26 -001 85 95104 1 0 -1 002 110 05 14 2.8 1.5 28.53 19 26 330 42 -004 90 97103 1 0 0 007 111 05 15 2.6 1.7 28.47 21 31 352 65 -007 94100102 0 0 0 028 112 05 16 3.0 1.9 28.40 27 39 345 58 -005 92 99103 1 0 0 081 113 05 17 2.7 1.2 28.38 31 46 323 35 000 89 95104 1 0 0 010 114 05 18 2.3 0.8 28.34 35 51 327 39 -003 89 95105 0 0 -1 015 115 05 19 2.0 0.7 28.25 41 60 334 46 -007 91 96104 0 0 -1 059 116 05 20 2.2 1.0 28.16 44 63 321 34 008 92 99104 0 0 -1 106 117 05 21 2.8 1.6 28.14 39 54 292 4 -001 91 99103 1 0 0 069 118 05 22 2.1 1.1 28.24 45 66 282 355 -019 93 98103 0 0 -1 199 119 05 23 2.4 1.4 28.30 39 56 289 1 -004 93 99104 0 0 -1 056 120 06 00 2.0 0.9 28.34 38 55 294 7 -022 92 97105 0 0 -1 088 * 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.