Heard Island site lat/lon = (-53.0000,72.6000) cell lat/lon = (-53.0015,72.5908) Forecast initialized at 2026-04-30/12 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 30 12 4.3 2.9 29.38 2 3 339 51 000 89 97 86 3 2 2 000 1 30 13 3.9 3.2 29.37 4 4 40 113 003 94 98 92 3 2 3 000 2 30 14 3.8 3.4 29.38 5 6 60 133 000 97 98 98 3 3 3 000 3 30 15 3.7 3.6 29.34 5 6 86 159 003 100 97 95 3 4 4 001 4 30 16 3.8 3.6 29.30 7 10 82 155 001 100 99100 4 4 4 000 5 30 17 3.8 3.7 29.28 8 12 81 154 -001 100 99100 4 5 5 000 6 30 18 3.9 3.7 29.24 11 15 72 145 001 100100100 4 5 6 002 7 30 19 3.8 3.7 29.20 11 18 64 136 -002 100100100 4 5 6 005 8 30 20 3.7 3.6 29.14 12 17 59 131 -001 100100100 4 6 6 011 9 30 21 3.7 3.6 29.10 13 18 43 116 -002 100100100 4 6 7 004 10 30 22 3.8 3.7 29.06 13 19 28 100 -001 100100100 5 6 7 004 11 30 23 4.0 3.8 29.02 13 19 22 95 -002 100100100 5 7 8 003 12 01 00 4.2 4.1 28.99 14 21 9 82 000 100100100 6 8 8 003 13 01 01 4.5 4.4 28.97 14 25 358 70 002 100100 99 7 8 7 000 14 01 02 4.8 4.7 28.93 14 25 350 62 003 100 99 88 8 8 7 001 15 01 03 4.9 4.8 28.88 14 26 356 69 -002 100100 98 8 8 7 011 16 01 04 4.9 4.7 28.83 15 28 0 73 -002 100100100 7 8 7 037 17 01 05 5.1 4.9 28.82 21 38 316 29 007 100100100 4 4 3 241 18 01 06 2.9 1.9 28.86 35 48 262 334 -003 93 99 96 1 0 1 080 19 01 07 4.0 1.0 28.91 33 46 269 341 000 79 86104 2 1 0 060 20 01 08 4.0 0.4 28.97 33 46 276 348 001 75 81 77 2 1 0 000 21 01 09 3.9 0.4 29.01 31 42 283 356 005 76 82 84 2 1 0 000 22 01 10 4.0 0.7 29.05 28 41 290 3 001 77 83 88 2 1 0 000 23 01 11 4.0 0.7 29.07 31 45 296 8 003 77 84101 2 1 0 003 24 01 12 4.1 0.3 29.10 30 42 290 3 000 74 79 82 2 1 0 000 25 01 13 4.0 0.6 29.13 29 41 299 12 000 76 82 74 2 1 0 000 26 01 14 3.7 1.1 29.15 29 41 305 17 -002 81 89 88 2 0 0 000 27 01 15 2.8 1.8 29.16 28 42 309 21 -021 94 99100 1 0 0 057 28 01 16 3.7 1.4 29.15 34 46 308 21 -003 84 93 97 2 0 0 045 29 01 17 3.6 1.4 29.15 30 41 309 22 001 84 92 80 2 0 0 000 30 01 18 3.6 1.3 29.14 32 47 311 24 000 83 93 98 2 0 0 000 31 01 19 4.0 1.4 29.14 34 51 310 23 -004 82 89 94 2 1 0 003 32 01 20 3.8 1.8 29.16 33 48 307 20 -009 86 96103 2 1 0 013 33 01 21 4.2 0.8 29.16 35 49 302 15 -002 76 86 96 2 1 0 064 34 01 22 3.8 0.9 29.16 41 55 300 12 -001 79 88 91 2 1 0 008 35 01 23 3.5 1.4 29.17 34 49 301 14 001 85 94 97 2 0 0 002 36 02 00 4.0 -0.1 29.18 36 51 293 5 001 72 76 75 2 1 0 017 37 02 01 3.9 0.1 29.19 35 49 299 11 -007 74 84 96 2 0 0 000 38 02 02 4.4 -0.5 29.22 39 53 289 1 002 67 71 88 3 1 0 028 39 02 03 3.9 0.8 29.26 37 52 290 3 002 78 85 84 2 1 0 000 40 02 04 2.9 1.2 29.30 35 50 286 358 004 88 96102 1 0 0 012 41 02 05 3.8 0.1 29.31 35 47 286 358 001 74 81 81 2 1 0 006 42 02 06 3.6 0.1 29.35 32 45 289 1 003 75 83 90 2 0 0 000 43 02 07 3.3 1.0 29.37 33 47 289 2 004 83 92 99 1 0 0 010 44 02 08 4.1 0.1 29.39 33 47 286 359 000 73 78 77 2 1 0 000 45 02 09 3.5 0.7 29.41 34 47 289 1 000 80 87 77 2 0 0 000 46 02 10 3.7 0.4 29.42 35 50 290 2 000 77 85 96 2 0 0 000 47 02 11 3.3 0.8 29.46 34 48 281 354 001 82 90 92 1 0 0 002 48 02 12 3.6 0.1 29.48 33 46 282 355 000 76 84 87 2 0 0 000 49 02 13 3.2 0.4 29.51 34 47 277 350 003 80 88 98 1 0 0 024 50 02 14 3.3 0.6 29.54 30 42 281 354 001 81 90100 1 0 0 000 51 02 15 3.4 0.0 29.56 32 45 273 346 000 76 82 86 1 0 0 036 52 02 16 3.4 0.3 29.59 30 42 280 353 000 78 86 85 1 0 0 000 53 02 17 3.3 0.7 29.60 29 40 283 355 -001 81 89 89 1 0 0 000 54 02 18 3.3 0.5 29.61 30 41 280 352 -001 80 87 84 1 0 0 000 55 02 19 3.5 0.0 29.62 29 39 279 351 002 76 82 81 2 0 0 000 56 02 20 3.0 0.2 29.65 30 42 275 347 001 80 87 96 1 0 -1 005 57 02 21 3.4 0.1 29.67 28 38 276 349 001 77 85 88 1 0 0 003 58 02 22 2.7 1.0 29.69 28 38 274 347 001 87 95 97 1 0 -1 010 59 02 23 3.0 0.1 29.70 26 35 271 344 001 80 83 74 1 0 -1 005 60 03 00 2.8 -0.1 29.72 25 35 265 338 002 79 86 98 1 0 -1 000 61 03 01 3.3 -0.6 29.73 23 32 264 337 -001 73 76 77 1 0 0 003 62 03 02 3.4 -0.3 29.75 22 30 269 342 -001 74 79 77 1 0 -1 000 63 03 03 3.3 0.0 29.77 21 28 268 341 000 77 83 79 1 0 -1 000 64 03 04 3.1 -0.1 29.79 21 28 261 334 000 77 83 78 1 0 -1 000 65 03 05 3.1 -0.3 29.82 20 28 255 327 001 76 83 74 1 0 -1 000 66 03 06 3.2 -0.3 29.84 20 26 255 327 000 75 81 77 1 0 -1 000 67 03 07 3.1 -0.3 29.86 19 24 250 323 002 76 83 78 1 0 -1 000 68 03 08 3.1 -0.2 29.89 17 22 244 317 004 76 84 79 1 0 -1 000 69 03 09 3.1 -0.6 29.91 16 21 246 319 003 74 77 69 1 0 -1 000 70 03 10 3.2 -0.9 29.93 16 21 247 320 002 72 73 70 1 0 -1 000 71 03 11 3.0 -0.5 29.95 16 20 243 316 -001 75 81 79 1 0 -1 000 72 03 12 2.8 -0.4 29.97 15 19 244 316 000 77 77 69 1 0 -1 000 73 03 13 2.9 -0.7 29.98 14 18 236 309 002 74 79 64 1 0 -1 000 74 03 14 3.0 -1.2 30.00 13 16 227 300 002 71 77 73 1 0 -1 000 75 03 15 2.9 -1.5 30.02 12 15 223 296 000 70 74 65 1 0 -1 000 76 03 16 2.8 -1.5 30.05 11 14 222 294 002 70 74 63 1 0 -1 000 77 03 17 2.8 -1.5 30.06 10 13 227 300 003 71 69 66 1 0 -1 000 78 03 18 2.9 -1.2 30.07 9 13 233 305 003 72 70 75 1 0 -1 000 79 03 19 2.9 -0.9 30.08 9 13 226 299 003 74 73 73 1 0 -1 000 80 03 20 2.9 -0.8 30.09 8 10 216 288 002 74 72 67 1 0 0 000 81 03 21 2.9 -0.7 30.10 7 9 209 282 001 75 74 69 1 0 -1 000 82 03 22 2.9 -0.5 30.10 6 8 200 273 003 77 81 75 1 0 -1 000 83 03 23 2.8 -0.3 30.10 7 8 184 257 002 78 82 78 1 0 -1 000 84 04 00 2.8 -0.3 30.10 6 7 171 243 001 79 84 78 1 0 -1 000 85 04 01 2.8 -0.3 30.11 5 6 149 222 001 79 86 79 1 0 -1 000 86 04 02 2.7 -0.2 30.12 4 5 127 200 001 80 86 79 1 0 -1 000 87 04 03 2.7 -0.2 30.12 6 6 115 188 002 80 85 77 1 0 -1 000 88 04 04 2.7 -0.2 30.12 6 8 105 178 003 80 83 75 1 0 -1 000 89 04 05 2.7 -0.2 30.11 7 9 100 173 000 80 79 74 1 0 -1 000 90 04 06 2.7 -0.2 30.10 8 10 96 169 -001 79 79 74 1 0 -1 000 91 04 07 2.8 -0.5 30.09 10 12 88 160 000 77 81 77 1 0 -1 000 92 04 08 2.8 -0.8 30.06 11 13 86 159 001 75 82 82 1 0 -1 000 93 04 09 2.8 -0.9 30.04 13 15 81 154 000 74 80 86 1 0 -1 000 94 04 10 2.7 -0.5 30.02 14 17 78 151 000 77 85 87 1 0 -1 000 95 04 11 2.7 -0.3 30.00 14 18 80 152 000 79 87 92 1 0 -1 000 96 04 12 2.7 -0.8 29.96 16 20 84 156 000 75 80104 1 0 -1 001 97 04 13 2.7 -1.5 29.93 18 23 85 158 000 71 73105 1 0 -1 002 98 04 14 2.7 -1.8 29.89 20 26 86 159 000 69 75 94 0 0 -1 000 99 04 15 2.5 -2.2 29.84 22 28 92 165 000 68 74 96 0 0 -2 000 100 04 16 2.0 -1.3 29.78 24 32 98 170 000 77 86 97 0 -1 -2 000 101 04 17 1.7 -0.1 29.71 25 36 103 175 000 87 95 99 0 -1 -2 008 102 04 18 1.6 0.1 29.63 27 38 106 179 -003 89 97104 0 -1 -2 013 103 04 19 1.6 0.4 29.54 28 39 110 183 001 92 96103 0 -1 -2 038 104 04 20 1.3 0.9 29.45 28 40 113 186 002 97 99101 0 -1 -2 174 105 04 21 1.2 0.9 29.35 27 38 119 192 -001 98100102 0 -1 -2 378 106 04 22 1.5 0.9 29.22 29 38 129 201 003 95 99100 0 -1 -2 242 107 04 23 2.3 0.6 29.14 26 32 136 208 002 88100100 0 0 -1 012 108 05 00 2.2 1.1 29.06 22 28 144 217 001 92100 96 0 0 -1 000 109 05 01 2.3 1.3 29.01 19 23 163 235 003 93100 92 0 0 0 000 110 05 02 2.3 1.3 28.96 17 20 182 254 004 93100 91 0 0 0 000 111 05 03 2.2 1.3 28.94 15 18 200 272 003 93100 84 0 0 0 000 112 05 04 2.0 1.0 28.92 14 16 216 288 003 93100 74 0 0 -1 000 113 05 05 2.0 0.9 28.89 13 15 232 304 004 92100 67 0 0 -1 000 114 05 06 2.1 0.7 28.86 13 15 254 327 000 90100 67 0 0 -1 000 115 05 07 1.8 0.3 28.83 13 14 261 334 003 89101 63 0 -1 -2 000 116 05 08 1.9 0.2 28.81 13 14 290 3 001 88101 64 0 -1 -2 001 117 05 09 1.9 0.3 28.77 13 15 316 28 000 88101 62 0 -1 -2 000 118 05 10 2.0 0.4 28.73 17 21 331 44 001 88101 84 0 -1 -2 002 119 05 11 2.7 0.8 28.68 18 26 343 56 -003 86 96 99 1 0 -1 004 120 05 12 2.1 1.5 28.61 21 29 356 69 002 96100103 0 0 -1 066 * 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.