Heard Island site lat/lon = (-53.0000,72.6000) cell lat/lon = (-53.0015,72.5908) Forecast initialized at 2025-09-28/00 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 28 00 0.5 -3.1 28.48 28 31 276 348 000 73 77 74 -1 -2 -4 000 1 28 01 0.0 -2.8 28.51 27 35 283 356 002 80 88 86 -1 -3 -4 005 2 28 02 0.3 -3.3 28.52 26 34 282 354 000 74 83 87 -1 -3 -4 000 3 28 03 0.6 -3.7 28.52 25 33 286 359 000 70 78 84 -1 -2 -4 000 4 28 04 0.3 -3.3 28.52 26 33 287 359 000 74 83 90 -1 -3 -4 003 5 28 05 0.2 -3.1 28.53 25 32 292 5 -001 76 86 97 -1 -3 -4 001 6 28 06 0.6 -3.1 28.52 25 33 298 10 005 74 82 84 -1 -2 -4 009 7 28 07 -0.2 -1.4 28.52 25 34 303 16 -031 91 97105 -2 -3 -4 040 8 28 08 0.6 -2.5 28.51 29 38 294 7 007 77 85 69 -1 -2 -3 039 9 28 09 0.8 -2.4 28.50 27 37 301 14 005 77 86 74 0 -2 -3 002 10 28 10 0.6 -2.4 28.49 28 36 294 6 004 78 87 90 -1 -2 -3 000 11 28 11 0.2 -1.3 28.48 24 33 297 10 -009 89 95 99 -1 -2 -3 014 12 28 12 0.9 -2.7 28.49 25 33 289 2 001 74 82 66 0 -2 -3 009 13 28 13 0.2 -2.4 28.48 26 34 291 4 000 81 89 96 -1 -2 -4 002 14 28 14 0.7 -2.0 28.49 25 33 292 5 005 80 87 80 0 -2 -3 039 15 28 15 0.2 -0.8 28.49 23 31 290 2 -051 93 94104 -1 -2 -3 106 16 28 16 0.2 -0.9 28.51 24 33 284 357 -016 92 96100 -1 -2 -3 257 17 28 17 0.8 -2.2 28.52 24 33 284 356 005 78 83 60 0 -2 -3 041 18 28 18 1.0 -2.7 28.53 26 34 293 5 005 74 82 84 0 -2 -3 000 19 28 19 1.1 -2.6 28.54 27 36 292 5 -001 74 82 85 0 -1 -3 000 20 28 20 1.0 -2.0 28.55 29 38 292 5 002 78 88 77 0 -2 -3 000 21 28 21 1.0 -1.6 28.55 30 41 296 8 003 80 89 98 0 -1 -3 000 22 28 22 0.6 -0.6 28.57 28 39 290 3 006 91 96 94 0 -2 -2 008 23 28 23 1.2 -2.0 28.59 28 39 281 353 -002 77 84 91 0 -1 -3 000 24 29 00 1.5 -2.4 28.60 30 39 284 356 001 72 81 87 0 -1 -2 000 25 29 01 0.9 -1.0 28.63 28 40 285 358 002 86 95 94 0 -2 -3 001 26 29 02 1.2 -1.6 28.65 29 40 286 359 000 80 86 83 0 -1 -2 000 27 29 03 1.3 -1.4 28.67 29 40 290 2 000 80 88 84 0 -1 -2 000 28 29 04 0.8 -0.7 28.69 30 44 287 0 002 89 96106 0 -1 -3 023 29 29 05 1.7 -2.3 28.71 35 50 286 359 -004 72 79 91 0 -1 -2 021 30 29 06 1.7 -2.2 28.73 33 45 289 2 002 73 81 87 0 -1 -2 000 31 29 07 1.6 -1.9 28.75 32 46 291 3 -002 75 81 86 0 -1 -2 005 32 29 08 1.7 -1.9 28.77 32 43 296 9 001 74 81 83 0 -1 -2 000 33 29 09 1.7 -1.6 28.78 33 45 295 7 002 77 85 88 0 -1 -2 000 34 29 10 1.0 -0.3 28.80 33 47 296 8 002 90 98100 0 -1 -2 007 35 29 11 1.2 -1.3 28.81 34 50 291 4 003 82 89 96 0 -1 -2 004 36 29 12 0.6 -0.8 28.81 35 51 296 8 -004 90 96106 0 -2 -3 030 37 29 13 1.5 -1.7 28.81 33 45 296 8 001 77 85 85 0 -1 -2 018 38 29 14 1.4 -1.9 28.82 35 50 301 13 -002 76 84101 0 -1 -2 011 39 29 15 0.9 -0.7 28.84 33 47 297 10 007 88 94105 0 -1 -2 033 40 29 16 0.5 -0.3 28.83 31 44 301 14 -018 94 99106 0 -2 -3 023 41 29 17 0.9 -1.0 28.82 32 48 298 10 000 86 90100 0 -1 -3 100 42 29 18 1.7 -2.2 28.81 33 44 304 17 003 73 80 83 0 -1 -2 005 43 29 19 1.5 -2.0 28.80 31 42 304 16 000 75 83 92 0 -1 -2 000 44 29 20 1.3 -1.8 28.78 30 40 306 18 000 77 84100 0 -1 -2 000 45 29 21 1.6 -2.2 28.76 30 40 302 14 000 73 80 96 0 -1 -2 004 46 29 22 1.5 -2.1 28.74 30 40 303 16 000 74 82 85 0 -1 -2 000 47 29 23 0.9 -1.1 28.74 29 41 301 14 003 85 91 99 0 -1 -3 003 48 30 00 0.8 -0.7 28.74 30 42 298 11 -012 89 95105 0 -1 -3 011 49 30 01 1.3 -1.2 28.74 30 40 293 6 000 81 90 91 0 -1 -2 013 50 30 02 1.1 -1.0 28.74 28 38 292 4 001 85 91101 0 -1 -3 001 51 30 03 0.8 -0.5 28.74 27 38 283 356 004 90 97 91 0 -2 -3 078 52 30 04 0.9 -2.8 28.75 28 40 282 355 -002 74 80 82 0 -2 -3 000 53 30 05 0.7 -2.4 28.75 30 41 287 0 000 78 87 94 -1 -2 -3 001 54 30 06 0.6 -1.7 28.75 31 43 290 3 000 83 91 96 -1 -2 -3 012 55 30 07 0.6 -1.1 28.76 30 41 282 355 000 87 96 93 -1 -2 -3 033 56 30 08 0.7 -1.5 28.77 30 41 279 352 -001 84 92102 0 -2 -3 004 57 30 09 0.9 -1.4 28.78 29 40 276 348 -001 83 92102 0 -2 -3 006 58 30 10 0.9 -1.1 28.80 28 38 270 343 002 85 94 90 0 -2 -3 026 59 30 11 0.6 -1.6 28.83 28 38 261 333 -001 84 94103 -1 -2 -3 002 60 30 12 0.4 -2.1 28.85 29 40 262 334 001 82 91 99 -1 -2 -3 007 61 30 13 0.5 -2.2 28.87 30 41 263 336 000 81 89 99 -1 -2 -3 016 62 30 14 0.5 -2.3 28.88 31 42 260 333 -001 80 89 97 -1 -2 -3 008 63 30 15 0.3 -2.1 28.91 31 43 259 332 000 82 91 98 -1 -2 -4 015 64 30 16 0.3 -2.1 28.92 31 43 257 330 000 82 92 96 -1 -2 -4 011 65 30 17 0.3 -2.3 28.94 32 44 256 329 -001 81 90 97 -1 -2 -4 019 66 30 18 0.3 -2.3 28.96 33 45 254 327 -001 81 90 97 -1 -2 -4 010 67 30 19 0.3 -2.3 28.98 33 45 253 325 000 81 91 97 -1 -2 -4 010 68 30 20 0.3 -2.3 29.00 33 45 252 324 000 81 91 98 -1 -2 -4 013 69 30 21 0.3 -2.0 29.02 33 46 251 324 000 83 93 99 -1 -2 -4 014 70 30 22 0.4 -2.0 29.05 33 46 248 321 000 82 92 97 -1 -2 -3 013 71 30 23 0.5 -2.0 29.09 33 46 247 319 000 82 91100 -1 -2 -3 011 72 01 00 0.4 -1.8 29.12 33 46 246 318 000 83 93103 -1 -2 -3 016 73 01 01 0.5 -1.3 29.15 32 45 243 315 000 87 95106 -1 -2 -3 027 74 01 02 1.0 -1.8 29.20 31 41 236 308 000 79 89 88 0 -2 -3 015 75 01 03 0.9 -2.0 29.24 29 40 234 307 001 80 87 99 0 -2 -3 001 76 01 04 0.7 -1.1 29.28 31 43 233 306 002 87 94104 0 -2 -3 052 77 01 05 1.1 -1.3 29.33 28 38 232 305 001 83 92 86 0 -1 -3 002 78 01 06 1.4 -1.9 29.36 28 37 234 306 000 77 85 86 0 -1 -2 000 79 01 07 1.3 -1.9 29.40 28 38 233 306 000 77 85 94 0 -1 -3 000 80 01 08 1.1 -2.1 29.45 28 38 233 306 000 78 87 91 0 -2 -3 001 81 01 09 0.9 -1.2 29.48 27 37 240 312 000 85 97101 0 -2 -3 000 82 01 10 1.2 -2.1 29.51 28 37 236 308 000 76 86 88 0 -1 -3 001 83 01 11 0.6 -2.2 29.55 28 39 239 311 000 79 88 95 -1 -2 -3 002 84 01 12 0.9 -2.4 29.58 27 36 241 313 001 76 86 85 0 -2 -3 001 85 01 13 0.8 -2.2 29.60 26 34 239 311 000 79 89 91 0 -2 -3 000 86 01 14 0.7 -2.5 29.62 25 32 239 311 001 77 87 94 -1 -2 -3 000 87 01 15 0.4 -1.9 29.64 23 31 244 317 001 83 93 94 -1 -2 -3 002 88 01 16 0.3 -1.8 29.66 23 30 245 317 000 84 93102 -1 -2 -3 006 89 01 17 0.6 -2.6 29.67 22 30 245 317 000 77 86 98 -1 -2 -3 005 90 01 18 0.7 -2.8 29.69 21 28 245 318 -001 74 79 99 0 -2 -3 000 91 01 19 0.7 -2.0 29.70 18 25 250 322 -001 80 87 97 0 -2 -3 000 92 01 20 0.6 -0.6 29.71 15 20 254 327 000 91 93106 0 -2 -3 005 93 01 21 0.7 0.2 29.71 11 16 261 333 -001 96 98105 0 -1 -2 023 94 01 22 0.9 0.4 29.71 10 15 270 342 -001 97101105 0 -1 -2 032 95 01 23 1.1 0.5 29.72 13 18 271 344 -001 96 98105 0 -1 -2 029 96 02 00 1.1 0.2 29.73 14 18 263 335 -001 93101101 0 -1 -2 011 97 02 01 1.1 0.4 29.75 11 15 265 337 000 94101102 0 -1 -2 002 98 02 02 1.2 0.7 29.77 9 13 277 349 000 96101104 0 0 -1 005 99 02 03 1.4 1.0 29.78 9 13 286 359 001 97100 98 0 0 -1 005 100 02 04 1.6 1.1 29.80 11 17 276 349 000 97100 99 0 0 -1 002 101 02 05 1.7 1.4 29.81 14 21 268 341 001 98100 98 0 0 0 000 102 02 06 1.9 1.7 29.82 15 24 270 343 001 100100 98 1 0 0 001 103 02 07 2.0 1.9 29.84 18 28 273 346 000 100100100 1 0 0 000 104 02 08 2.0 1.8 29.84 17 27 274 347 -002 100100100 1 0 1 000 105 02 09 1.8 1.7 29.83 17 25 282 354 000 100100 90 0 0 4 000 106 02 10 1.9 1.8 29.84 19 28 287 359 -004 100100 85 1 0 5 000 107 02 11 2.0 1.9 29.85 20 31 295 7 000 100 77 79 1 4 5 000 108 02 12 2.0 1.9 29.82 20 31 306 19 002 100 84 82 1 5 6 000 109 02 13 2.1 2.0 29.80 25 38 310 23 -007 100100 67 1 1 5 000 110 02 14 2.0 1.9 29.80 28 40 300 12 -001 100100 60 1 0 0 000 111 02 15 2.2 2.1 29.77 25 41 304 16 -002 100100 99 1 1 0 000 112 02 16 2.5 2.3 29.73 26 42 312 25 -001 100100 88 1 1 2 000 113 02 17 2.6 2.4 29.71 29 48 310 23 -003 100100 96 1 1 2 000 114 02 18 2.7 2.6 29.67 31 47 314 26 -002 100100 90 2 1 0 000 115 02 19 2.9 2.8 29.63 32 51 320 33 000 100100 87 2 1 2 000 116 02 20 3.1 3.0 29.59 32 52 321 34 -003 100100 97 2 2 2 000 117 02 21 3.7 3.3 29.55 32 53 320 33 000 97100 98 3 2 2 006 118 02 22 3.9 3.6 29.51 32 55 319 32 000 98100100 3 3 2 023 119 02 23 4.2 4.1 29.48 33 56 318 30 -004 99100100 4 3 3 015 120 03 00 4.3 4.2 29.44 32 55 314 27 -003 99100100 4 3 3 018 * 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.