Heard Island site lat/lon = (-53.0000,72.6000) cell lat/lon = (-53.0015,72.5908) Forecast initialized at 2026-05-03/00 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 03 00 2.8 -0.4 29.69 28 33 277 349 000 75 81 77 1 0 -1 000 1 03 01 2.8 -0.6 29.72 27 36 275 348 -002 76 84 80 1 0 -1 011 2 03 02 2.8 -1.2 29.73 26 34 272 344 000 72 78 78 1 0 -1 000 3 03 03 2.8 -1.3 29.76 25 33 270 342 000 72 78 75 1 0 -1 000 4 03 04 2.8 -1.3 29.78 25 33 269 341 002 71 77 75 1 0 -1 000 5 03 05 2.9 -1.5 29.79 24 31 266 339 000 70 75 76 1 0 -1 000 6 03 06 3.0 -1.5 29.82 23 30 265 337 000 69 74 70 1 0 -1 000 7 03 07 3.0 -1.4 29.83 22 29 263 336 000 70 74 68 1 0 -1 000 8 03 08 3.0 -1.2 29.83 21 28 262 334 001 71 76 66 1 0 -1 000 9 03 09 3.0 -1.4 29.86 21 27 261 333 -002 70 74 65 1 0 -1 000 10 03 10 3.2 -2.0 29.88 20 26 259 332 000 65 67 71 1 0 -1 000 11 03 11 3.2 -1.6 29.91 19 24 260 332 002 67 71 77 1 0 -1 000 12 03 12 2.8 -0.6 29.93 19 26 256 329 001 76 82 94 1 0 -1 000 13 03 13 3.3 -1.6 29.96 19 25 258 331 002 67 69 84 1 0 -1 000 14 03 14 3.1 -0.9 29.98 18 24 247 320 004 72 79 89 1 0 -1 000 15 03 15 3.1 -0.3 30.00 15 20 241 314 004 76 83 77 1 0 -1 000 16 03 16 3.0 -0.1 30.01 13 18 231 304 004 78 79 74 1 0 0 000 17 03 17 3.0 -0.5 30.03 9 13 236 308 002 76 57 69 1 0 0 000 18 03 18 3.0 -0.6 30.05 6 9 255 328 004 75 64 65 1 0 0 000 19 03 19 3.1 -0.4 30.05 5 6 258 330 004 76 76 65 1 0 -1 000 20 03 20 3.0 -0.3 30.05 3 4 234 307 004 78 80 65 1 0 -1 000 21 03 21 3.0 -0.3 30.05 1 3 173 245 001 79 80 67 1 0 -1 000 22 03 22 2.9 -0.2 30.04 2 4 86 158 002 79 80 68 1 0 -1 000 23 03 23 2.9 -0.2 30.04 5 6 79 151 -001 79 79 68 1 0 -1 000 24 04 00 2.9 -0.8 30.04 7 9 72 145 000 75 78 69 1 0 -1 000 25 04 01 2.8 -1.0 30.03 10 12 73 145 002 74 77 72 1 0 -1 000 26 04 02 2.8 -0.8 30.01 12 15 77 150 000 75 75 77 1 0 -1 000 27 04 03 2.9 -0.7 30.02 15 19 72 145 -001 75 78 78 1 0 -1 000 28 04 04 2.9 -0.8 30.00 17 22 69 141 001 74 77 82 1 0 -1 000 29 04 05 2.9 -1.1 29.98 19 25 69 141 000 72 75 86 1 0 -1 000 30 04 06 2.9 -1.2 29.95 21 28 70 143 009 72 75 95 1 0 -1 000 31 04 07 2.9 -0.9 29.91 23 31 69 141 -002 73 77 97 1 0 -1 000 32 04 08 2.9 -0.7 29.87 25 34 65 138 -004 74 80100 1 0 -1 000 33 04 09 1.7 0.6 29.83 27 37 67 139 -002 92 94 97 0 -1 -2 022 34 04 10 1.3 0.7 29.78 29 42 73 146 -004 96 98 98 0 -1 -2 148 35 04 11 1.6 0.8 29.72 32 47 76 149 -003 94 98100 0 -1 -2 113 36 04 12 1.8 0.9 29.65 35 50 76 149 -009 94101101 0 0 -1 103 37 04 13 2.1 1.0 29.58 36 51 75 148 -018 92100100 0 0 -1 102 38 04 14 2.5 1.4 29.54 34 50 70 143 -018 93100100 0 0 0 157 39 04 15 2.6 1.7 29.45 36 52 71 143 -003 94100 99 1 0 0 240 40 04 16 3.5 2.3 29.36 36 50 67 140 -003 91 99100 2 1 0 261 41 04 17 4.0 3.0 29.28 32 46 62 134 -013 93100100 2 2 2 133 42 04 18 4.7 4.4 29.20 29 45 52 124 002 98100100 4 4 4 197 43 04 19 5.4 5.3 29.14 28 42 42 114 -007 100100100 5 5 5 097 44 04 20 5.4 5.3 29.08 24 37 42 115 -007 100100100 5 5 6 196 45 04 21 5.4 5.3 29.01 21 39 41 113 -007 100100100 5 6 7 205 46 04 22 6.0 5.8 28.94 22 40 27 100 003 99100 99 6 7 8 325 47 04 23 5.9 5.7 28.89 21 38 17 89 004 99100 97 6 6 6 110 48 05 00 5.7 5.5 28.85 24 37 359 72 002 99100100 5 5 5 001 49 05 01 5.5 5.4 28.84 24 38 330 43 007 99100100 6 7 7 001 50 05 02 7.2 7.1 28.83 22 39 333 46 004 99 77 80 11 10 9 009 51 05 03 4.7 4.5 28.82 23 32 355 68 000 100 84 83 5 8 8 000 52 05 04 4.8 4.6 28.78 21 36 356 68 000 100100 90 5 6 5 000 53 05 05 5.0 4.9 28.74 24 38 352 64 000 100100100 5 4 5 001 54 05 06 4.7 4.5 28.71 22 33 341 54 000 100100100 4 4 4 004 55 05 07 3.9 3.7 28.68 21 28 309 21 002 99100100 2 1 2 044 56 05 08 3.4 2.4 28.68 24 32 274 346 000 93100100 1 0 0 023 57 05 09 3.3 1.9 28.69 27 37 272 344 -003 90 99101 1 0 0 001 58 05 10 3.4 1.4 28.72 29 39 274 346 000 85 96103 1 0 0 003 59 05 11 3.2 0.8 28.73 29 40 275 348 003 83 93104 1 0 -1 005 60 05 12 3.0 0.7 28.75 29 39 278 351 -001 83 95104 1 0 -1 004 61 05 13 3.4 0.7 28.76 27 36 287 0 003 81 90104 1 0 0 005 62 05 14 3.4 0.9 28.76 25 34 300 13 -002 82 90104 1 0 0 005 63 05 15 3.2 1.2 28.73 24 31 317 30 -001 86 94103 1 0 0 003 64 05 16 2.3 1.6 28.67 20 27 335 48 -004 95100101 0 0 -1 032 65 05 17 1.9 1.5 28.59 18 28 4 77 -007 97100102 0 0 0 102 66 05 18 4.1 3.6 28.49 26 41 345 58 -003 97100100 3 2 1 068 67 05 19 4.1 2.0 28.45 35 50 322 35 -002 85 95102 2 1 0 000 68 05 20 4.2 1.8 28.44 43 60 301 14 001 83 94102 2 1 0 000 69 05 21 3.6 0.9 28.49 43 60 291 3 004 81 90100 2 0 0 000 70 05 22 3.1 0.5 28.54 44 62 290 2 -001 81 89102 1 0 -1 010 71 05 23 3.6 -2.0 28.57 41 58 295 7 -001 63 67 87 2 0 0 001 72 06 00 3.4 -2.1 28.59 40 57 293 6 -005 64 68 90 1 0 -1 000 73 06 01 3.5 -3.1 28.62 43 60 296 8 -002 58 58 76 1 0 0 000 74 06 02 3.2 -2.2 28.64 43 59 295 7 -005 64 70 89 1 0 -1 000 75 06 03 2.9 -1.8 28.65 41 56 297 10 -003 68 73 84 1 0 -1 001 76 06 04 2.9 -1.2 28.66 39 55 297 10 -003 72 78 87 1 0 -1 000 77 06 05 3.1 -1.3 28.67 39 54 299 11 -010 70 75 86 1 0 -1 000 78 06 06 3.0 -0.9 28.69 40 56 297 10 001 73 80 91 1 0 -1 000 79 06 07 3.1 -1.1 28.69 39 55 298 11 -005 71 76 85 1 0 -1 001 80 06 08 3.2 -1.4 28.69 39 54 301 14 -001 69 74 85 1 0 -1 000 81 06 09 3.1 -0.6 28.68 40 55 301 13 002 74 83 98 1 0 -1 000 82 06 10 2.3 0.9 28.68 39 56 299 11 004 90 98104 0 0 -1 034 83 06 11 2.7 0.9 28.68 36 50 295 8 001 87 95 96 1 0 -1 017 84 06 12 2.6 0.9 28.68 34 46 293 6 000 87 96104 0 0 -1 007 85 06 13 2.3 0.8 28.68 33 44 287 359 005 89 93103 0 0 -1 040 86 06 14 1.8 1.2 28.69 31 42 277 350 000 96 98104 0 0 -1 059 87 06 15 2.0 1.0 28.72 28 38 247 320 -001 93 98104 0 0 -1 102 88 06 16 1.9 0.7 28.77 29 41 227 299 -008 91 98105 0 -1 -2 076 89 06 17 1.7 0.4 28.84 30 41 218 291 -001 90 95105 0 -1 -2 039 90 06 18 1.5 0.0 28.91 30 41 213 286 -002 90 95104 0 -1 -2 034 91 06 19 1.5 -0.5 28.98 29 39 211 284 000 85 92100 0 -1 -2 019 92 06 20 1.4 -0.8 29.04 28 37 208 281 -001 84 92 99 0 -1 -3 012 93 06 21 1.2 -1.1 29.10 27 36 207 279 000 83 90 98 0 -2 -3 009 94 06 22 1.0 -1.1 29.16 26 35 207 279 000 85 93 99 0 -2 -3 015 95 06 23 1.0 -2.6 29.21 28 36 204 277 000 74 83 92 -1 -2 -3 012 96 07 00 0.9 -3.4 29.27 25 31 209 281 002 69 78 85 -1 -2 -3 000 97 07 01 0.8 -2.5 29.31 21 27 213 286 001 77 86 95 -1 -2 -3 002 98 07 02 1.3 -4.4 29.33 20 25 212 285 005 62 69 64 0 -2 -3 000 99 07 03 0.3 -1.9 29.37 20 24 228 301 -003 84 94102 -1 -3 -4 012 100 07 04 0.9 -2.3 29.38 21 26 232 304 003 78 87 92 -1 -2 -3 021 101 07 05 1.6 -4.8 29.40 22 29 237 310 001 58 61 56 0 -1 -3 001 102 07 06 1.5 -3.3 29.41 22 27 240 313 -002 67 75 86 0 -1 -3 000 103 07 07 0.8 -1.9 29.43 19 22 253 326 -002 80 86 95 -1 -2 -3 002 104 07 08 0.9 0.3 29.42 17 24 274 347 -014 96 97106 0 -1 -3 128 105 07 09 1.7 -0.3 29.43 20 26 229 301 000 85 85 85 0 -1 -2 061 106 07 10 2.1 -1.4 29.44 20 25 255 328 001 76 83 76 0 -1 -2 000 107 07 11 2.2 -1.4 29.44 20 24 254 327 000 74 82 73 0 0 -2 000 108 07 12 1.7 -1.2 29.44 21 27 246 319 000 80 84 94 0 -1 -2 000 109 07 13 1.4 -0.5 29.45 19 29 265 337 000 85 87101 0 -1 -2 025 110 07 14 2.7 -1.8 29.44 20 26 255 327 000 70 76 84 1 0 -1 003 111 07 15 2.5 -1.1 29.44 16 22 268 341 000 75 82 86 0 0 -1 000 112 07 16 2.3 0.1 29.43 20 26 279 352 001 83 90 99 0 0 -1 000 113 07 17 2.6 -0.3 29.42 18 22 282 354 001 79 85 91 0 0 -1 001 114 07 18 2.2 0.7 29.41 18 22 292 5 000 89 94 97 0 0 -1 000 115 07 19 1.9 1.1 29.41 17 21 295 8 000 95 96100 0 0 -1 003 116 07 20 2.1 1.0 29.40 15 18 290 2 001 92100103 0 0 -1 008 117 07 21 2.5 1.1 29.38 15 19 271 343 000 90 93 94 0 0 -1 000 118 07 22 2.0 1.3 29.37 14 18 261 334 -002 95 94101 0 0 -1 018 119 07 23 2.0 1.2 29.37 11 14 254 327 003 94 95 99 0 0 -1 017 120 08 00 2.2 0.9 29.37 12 15 239 311 003 91 88 97 0 0 -1 003 * 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.