Heard Island site lat/lon = (-53.0000,72.6000) cell lat/lon = (-53.0015,72.5908) Forecast initialized at 2026-10-15/12 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 15 12 0.8 -2.6 29.63 19 21 238 311 000 73 80 78 0 -2 -3 000 1 15 13 0.8 -2.5 29.65 18 23 239 312 002 76 85 79 0 -2 -3 000 2 15 14 0.8 -2.4 29.68 17 22 241 313 000 77 85 81 0 -2 -3 000 3 15 15 0.8 -2.2 29.69 15 20 243 316 001 78 88 84 0 -2 -3 000 4 15 16 0.8 -1.8 29.69 15 20 251 324 000 81 91 89 0 -2 -3 000 5 15 17 0.8 -1.4 29.67 14 19 258 331 002 84 94 94 0 -2 -3 000 6 15 18 0.8 -1.5 29.67 15 19 262 335 000 83 93 90 0 -2 -3 000 7 15 19 0.7 -2.0 29.66 15 20 265 338 000 80 89 87 0 -2 -3 000 8 15 20 0.7 -1.8 29.64 13 18 282 354 000 81 86 93 0 -2 -3 000 9 15 21 0.8 -1.4 29.60 14 19 301 14 000 84 87 91 0 -2 -2 000 10 15 22 0.9 -1.2 29.58 16 22 313 25 000 84 84 70 0 -1 -2 000 11 15 23 1.0 -1.0 29.54 18 25 326 39 -001 86 97 52 0 -2 -2 000 12 16 00 1.1 -1.0 29.50 21 30 336 48 000 85 96 90 0 -1 -3 000 13 16 01 1.2 -0.7 29.43 24 33 339 51 -002 85 95101 0 -1 -2 000 14 16 02 1.4 -0.6 29.36 26 37 345 57 -001 86 95100 0 -1 -1 001 15 16 03 1.6 -0.1 29.29 28 42 343 55 -002 88 99101 0 0 0 000 16 16 04 1.6 0.3 29.21 29 44 343 56 -001 91 99101 0 0 0 024 17 16 05 1.5 0.8 29.13 30 44 345 58 -006 95100 97 0 0 0 083 18 16 06 1.5 1.0 29.03 31 46 350 62 -011 96100101 0 0 0 097 19 16 07 1.3 0.9 28.96 31 47 349 62 -005 97100101 0 0 0 195 20 16 08 1.6 0.9 28.90 31 46 339 52 -005 96100102 0 0 0 141 21 16 09 1.7 1.1 28.87 29 41 274 346 -007 96100102 0 0 -1 110 22 16 10 1.6 -2.6 28.92 33 48 245 318 -002 71 75103 0 -1 -2 043 23 16 11 1.4 -1.5 28.95 33 47 262 335 002 79 89 98 0 -1 -2 000 24 16 12 1.1 -1.0 28.96 33 48 264 337 001 85 92100 0 -1 -2 006 25 16 13 1.1 -1.2 28.98 35 51 261 334 -001 83 91103 0 -1 -2 015 26 16 14 1.0 -1.2 29.01 36 52 261 333 -002 84 91102 0 -1 -2 010 27 16 15 1.0 -1.2 29.04 36 52 259 332 -002 85 92102 0 -1 -3 011 28 16 16 1.2 -1.9 29.06 35 51 259 331 -004 78 86100 0 -1 -2 011 29 16 17 1.0 -1.7 29.10 35 51 258 330 -004 80 87100 0 -1 -3 006 30 16 18 1.2 -2.3 29.13 36 51 257 330 -003 75 83100 0 -1 -3 007 31 16 19 1.2 -2.2 29.15 36 50 259 331 000 76 84104 0 -1 -3 000 32 16 20 1.0 -1.3 29.17 32 46 263 335 000 83 91101 0 -1 -2 002 33 16 21 1.3 -1.4 29.17 32 46 267 339 -001 80 87104 0 -1 -2 008 34 16 22 1.1 -2.2 29.19 33 45 268 341 -005 77 88107 0 -2 -3 000 35 16 23 1.3 -1.9 29.18 31 44 275 348 -009 77 88106 0 -1 -3 000 36 17 00 1.2 -1.8 29.17 31 44 279 352 -005 78 88106 0 -1 -3 003 37 17 01 1.3 -1.7 29.15 32 44 281 354 000 78 89106 0 -1 -3 000 38 17 02 1.0 -1.4 29.13 32 45 281 353 000 83 92106 0 -1 -3 002 39 17 03 0.9 -0.9 29.11 32 46 283 356 000 87 97104 0 -1 -2 008 40 17 04 1.1 -0.4 29.10 31 44 284 357 000 89 97105 0 -1 -2 005 41 17 05 1.7 -1.6 29.07 31 43 277 349 -001 77 84 91 0 -1 -2 003 42 17 06 0.7 -0.6 29.07 27 38 266 339 005 90 93 88 0 -2 -3 031 43 17 07 1.2 -2.8 29.06 27 39 265 338 -004 72 77 80 0 -1 -3 002 44 17 08 0.6 -2.1 29.08 31 43 266 338 000 80 88 98 0 -2 -3 003 45 17 09 0.7 -1.8 29.09 31 44 267 340 002 82 90102 0 -2 -3 008 46 17 10 1.3 -2.7 29.09 30 41 268 340 004 72 78 83 0 -1 -2 007 47 17 11 1.2 -2.1 29.10 29 39 273 345 008 77 85 84 0 -1 -3 000 48 17 12 1.3 -2.0 29.09 26 36 275 347 003 77 85 79 0 -1 -2 000 49 17 13 1.4 -2.0 29.08 23 30 278 350 -004 76 83 81 0 -1 -2 000 50 17 14 1.2 -1.9 29.06 20 27 283 356 000 77 82 82 0 -1 -2 000 51 17 15 1.2 -1.7 29.00 18 23 295 8 004 79 83 90 0 -1 -2 000 52 17 16 1.2 -1.6 28.95 17 21 310 23 000 79 84 95 0 -1 -2 000 53 17 17 1.2 -1.7 28.87 16 20 331 43 002 79 75 94 0 -1 -2 000 54 17 18 1.1 -1.2 28.78 18 24 350 63 -001 83 80105 0 -1 -2 000 55 17 19 0.7 0.4 28.71 19 26 0 73 -011 98101101 0 -1 -2 112 56 17 20 0.7 0.4 28.61 20 28 4 76 -015 98101101 0 -1 -2 220 57 17 21 0.6 0.3 28.52 20 29 9 81 -001 98101104 0 -1 -2 189 58 17 22 1.4 0.4 28.47 21 32 306 18 000 93101104 0 0 -1 059 59 17 23 1.7 -1.7 28.50 42 57 257 329 000 76 86106 0 -1 -2 006 60 18 00 1.9 -2.3 28.52 34 48 266 338 001 71 77 95 0 0 -2 002 61 18 01 1.2 -0.4 28.53 33 47 274 346 000 89 96 98 0 -1 -2 007 62 18 02 1.0 -0.2 28.51 33 48 279 352 -002 91 98105 0 -1 -2 020 63 18 03 1.6 -1.1 28.51 37 52 276 349 002 81 91103 0 -1 -2 011 64 18 04 0.7 -0.2 28.50 32 48 280 353 -002 93 99106 0 -1 -2 019 65 18 05 1.4 -1.2 28.49 36 49 278 351 002 81 91 97 0 -1 -2 024 66 18 06 1.2 -0.8 28.46 34 49 284 357 -007 85 91102 0 -1 -2 003 67 18 07 1.1 -0.7 28.44 34 49 285 357 -008 87 95 96 0 -1 -2 011 68 18 08 1.8 -1.7 28.42 41 55 275 348 006 76 86104 0 -1 -2 014 69 18 09 1.2 -0.9 28.42 34 47 274 347 005 84 92104 0 -1 -2 021 70 18 10 0.7 -0.2 28.42 30 44 272 345 -007 93 99105 0 -1 -2 024 71 18 11 1.4 -1.3 28.42 33 45 267 339 001 80 90 91 0 -1 -2 030 72 18 12 0.7 -0.5 28.42 28 40 272 344 -002 91 98106 0 -2 -3 012 73 18 13 0.7 -0.5 28.41 24 32 254 327 004 90 97106 0 -1 -2 051 74 18 14 1.1 -0.7 28.46 26 37 230 303 -002 86 98 91 0 -1 -2 000 75 18 15 1.4 -0.6 28.52 28 38 234 306 -001 85 96 94 0 -1 -2 000 76 18 16 1.1 -0.2 28.58 27 36 232 304 -001 91 98105 0 -1 -2 004 77 18 17 1.2 -1.4 28.62 26 37 225 297 001 80 85 88 0 -1 -2 003 78 18 18 1.1 -0.9 28.67 27 37 230 303 000 86 95 91 0 -1 -3 001 79 18 19 0.4 -0.8 28.72 29 39 237 310 -002 91100106 -1 -2 -3 009 80 18 20 -0.3 -2.3 28.77 33 46 237 310 -006 85 95107 -2 -3 -4 068 81 18 21 0.2 -2.1 28.82 28 38 234 306 -006 83 93 97 -1 -2 -4 046 82 18 22 0.6 -2.3 28.85 26 34 241 314 -001 78 90 96 -1 -2 -3 007 83 18 23 0.3 -2.1 28.88 27 37 245 318 000 83 92 98 -1 -2 -3 000 84 19 00 0.5 -2.6 28.90 27 38 244 316 000 78 86 89 -1 -2 -3 011 85 19 01 0.2 -2.0 28.92 26 36 250 323 000 83 92102 -1 -2 -4 005 86 19 02 0.4 -2.4 28.93 27 36 247 319 000 79 89 92 -1 -2 -4 004 87 19 03 0.4 -2.7 28.94 26 35 250 323 000 77 88 86 -1 -2 -4 001 88 19 04 0.1 -2.5 28.94 26 34 253 326 000 81 90 93 -1 -3 -4 001 89 19 05 0.2 -2.3 28.94 26 36 254 326 000 82 93 97 -1 -3 -4 004 90 19 06 0.1 -2.3 28.95 26 35 255 327 000 82 92103 -1 -3 -4 003 91 19 07 0.1 -2.2 28.96 26 36 253 326 -001 83 93104 -1 -3 -4 018 92 19 08 0.2 -2.3 28.98 27 37 253 326 -002 82 92102 -1 -3 -4 020 93 19 09 0.1 -2.3 28.99 27 35 252 325 000 83 94106 -1 -3 -4 006 94 19 10 0.1 -2.1 29.00 26 35 250 323 -001 83 94 95 -1 -3 -4 031 95 19 11 0.4 -3.0 29.00 26 34 247 319 000 75 84 88 -1 -2 -4 003 96 19 12 0.4 -3.0 29.01 27 37 244 317 001 75 85 91 -1 -2 -4 000 97 19 13 -0.0 -2.0 29.03 28 38 246 319 -003 86 95 93 -1 -3 -4 022 98 19 14 0.2 -3.4 29.05 29 39 244 317 003 75 82 87 -1 -3 -4 002 99 19 15 0.3 -4.2 29.06 30 40 246 318 002 68 76 88 -1 -2 -4 000 100 19 16 -0.4 -2.6 29.08 31 42 245 318 -004 84 95104 -2 -3 -4 019 101 19 17 -0.0 -3.0 29.09 33 44 245 318 000 79 90 93 -1 -3 -4 028 102 19 18 0.0 -2.4 29.12 33 44 240 313 -004 83 93101 -1 -3 -4 020 103 19 19 0.4 -3.0 29.15 31 41 238 311 001 75 84 88 -1 -2 -4 005 104 19 20 0.4 -3.7 29.18 33 45 241 314 001 71 78 88 -1 -2 -4 003 105 19 21 -0.0 -3.0 29.22 32 43 240 312 -001 79 88100 -1 -3 -4 005 106 19 22 0.2 -2.7 29.24 34 47 238 310 -004 80 90103 -1 -3 -4 034 107 19 23 -0.2 -1.8 29.29 31 41 233 305 -007 89 98104 -2 -3 -4 054 108 20 00 0.0 -1.9 29.32 30 41 235 307 -017 86 96103 -1 -3 -4 088 109 20 01 0.3 -2.9 29.35 29 38 222 295 004 77 84 84 -1 -2 -4 062 110 20 02 0.3 -4.3 29.38 27 38 221 293 000 68 73 71 -1 -2 -4 000 111 20 03 0.3 -4.0 29.43 27 35 220 292 001 70 79 97 -1 -2 -4 000 112 20 04 0.2 -5.5 29.49 28 37 220 293 -001 62 66 76 -1 -3 -4 001 113 20 05 0.2 -5.8 29.53 29 38 221 294 000 60 65 84 -1 -3 -4 000 114 20 06 -0.1 -5.3 29.59 29 38 221 294 -001 65 69 84 -1 -3 -4 000 115 20 07 -0.2 -4.5 29.65 29 37 228 300 000 70 79 95 -2 -3 -5 000 116 20 08 -0.2 -4.3 29.69 28 37 225 298 006 71 80 92 -2 -3 -5 004 117 20 09 -0.2 -4.4 29.73 26 35 228 300 001 70 79 85 -2 -3 -4 000 118 20 10 -0.0 -4.2 29.76 26 34 231 303 000 71 79 91 -1 -3 -4 000 119 20 11 -0.4 -3.2 29.79 26 33 225 298 001 81 91103 -2 -3 -4 002 120 20 12 -0.5 -3.0 29.82 21 26 216 288 002 82 92104 -2 -3 -4 013 * 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.