Heard Island site lat/lon = (-53.0000,72.6000) cell lat/lon = (-53.0015,72.5908) Forecast initialized at 2026-01-12/00 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 12 00 4.7 2.1 29.35 27 30 289 2 000 81 88 93 3 2 0 000 1 12 01 3.9 1.9 29.35 28 39 289 2 000 86 94 81 2 1 0 000 2 12 02 4.2 2.3 29.37 26 35 287 0 001 86 94103 2 1 0 000 3 12 03 3.9 2.1 29.37 27 36 285 358 000 87 96103 2 1 0 009 4 12 04 3.9 1.2 29.37 27 37 285 358 000 80 86 86 2 1 0 000 5 12 05 4.0 1.0 29.37 28 38 285 358 000 79 87 90 2 1 0 000 6 12 06 3.8 1.2 29.37 29 41 287 0 000 82 91 98 2 0 0 002 7 12 07 3.7 1.5 29.39 30 41 284 356 000 84 92 98 2 0 0 004 8 12 08 3.9 1.2 29.37 30 41 282 354 000 80 89102 2 0 0 000 9 12 09 3.9 0.9 29.37 29 41 282 354 000 78 86 98 2 0 0 000 10 12 10 2.8 1.8 29.39 30 43 283 356 -018 93 97104 1 0 0 060 11 12 11 3.7 1.2 29.38 31 43 283 356 002 82 91101 2 0 0 018 12 12 12 3.1 1.7 29.39 31 44 283 355 -005 90 98103 1 0 0 018 13 12 13 3.6 1.3 29.39 32 44 280 353 000 84 94101 1 0 0 018 14 12 14 3.6 1.4 29.39 32 45 278 351 -004 84 94103 2 0 0 012 15 12 15 3.9 0.9 29.41 33 46 275 348 -005 79 87 95 2 0 0 017 16 12 16 3.8 1.1 29.42 32 45 276 349 -002 81 90 99 2 0 0 000 17 12 17 3.4 1.5 29.43 31 44 275 347 -002 87 94 89 1 0 0 006 18 12 18 3.3 1.6 29.45 31 44 274 347 000 88 97 93 1 0 0 005 19 12 19 3.5 1.4 29.45 31 44 271 343 -005 85 94101 1 0 0 024 20 12 20 3.8 1.1 29.45 32 45 273 345 001 81 88 99 2 0 0 002 21 12 21 3.8 1.0 29.46 31 44 271 343 -001 81 88 97 2 0 0 000 22 12 22 3.7 1.2 29.47 31 42 271 344 000 82 90 98 2 0 0 003 23 12 23 2.8 1.7 29.49 29 43 269 341 -008 92 97104 1 0 0 048 24 13 00 3.7 0.9 29.49 29 40 271 344 -002 80 87 83 2 0 0 022 25 13 01 3.4 1.1 29.50 28 40 270 343 000 83 92 97 1 0 0 002 26 13 02 3.8 0.7 29.50 28 38 272 344 000 79 87 98 2 0 0 000 27 13 03 3.3 1.2 29.51 27 37 274 346 000 85 94 97 1 0 0 016 28 13 04 3.4 0.9 29.50 26 34 278 351 -002 83 90 84 1 0 0 001 29 13 05 3.4 0.6 29.49 24 32 280 352 -002 81 89 97 1 0 0 000 30 13 06 3.5 1.1 29.48 22 30 284 356 -002 83 92 92 1 0 0 001 31 13 07 3.5 1.3 29.46 21 27 287 0 -003 84 93 92 1 0 0 000 32 13 08 3.3 1.6 29.43 20 27 289 2 -002 88 93103 1 0 0 000 33 13 09 3.2 1.9 29.41 20 27 291 4 001 91 97103 1 0 0 007 34 13 10 3.2 1.9 29.37 18 24 293 5 000 91 96101 1 0 0 004 35 13 11 3.2 2.1 29.35 15 20 293 6 -002 92 89103 1 0 0 000 36 13 12 3.2 2.0 29.32 12 16 293 5 -002 92 96103 1 0 0 015 37 13 13 2.8 2.0 29.30 12 14 292 5 -001 94100101 1 0 0 045 38 13 14 2.6 1.9 29.29 11 13 279 351 000 96100 98 1 0 0 049 39 13 15 2.7 1.9 29.28 10 12 266 338 000 94 99 99 1 0 0 022 40 13 16 2.9 1.8 29.28 11 14 256 329 -001 92 97103 1 0 0 003 41 13 17 3.2 1.9 29.28 13 16 250 322 000 91 96104 1 0 0 000 42 13 18 3.4 2.0 29.29 14 17 241 313 001 89 90104 1 0 0 000 43 13 19 3.3 1.4 29.30 15 19 235 308 001 86 88 97 1 0 0 000 44 13 20 3.4 0.7 29.32 15 20 238 311 000 81 79 90 1 0 0 000 45 13 21 3.5 0.5 29.33 17 22 245 318 000 79 81 93 1 0 0 000 46 13 22 3.5 -0.7 29.33 17 22 251 324 001 71 72 89 1 0 0 000 47 13 23 3.5 -2.1 29.33 17 22 254 327 001 63 66 87 1 0 -1 000 48 14 00 3.4 -2.3 29.34 17 21 257 330 001 63 65 86 1 0 -1 001 49 14 01 3.4 -1.9 29.35 17 22 263 336 000 65 69 85 1 0 -1 000 50 14 02 3.3 -0.7 29.34 18 22 270 343 -002 72 78 88 1 0 -1 000 51 14 03 2.9 -0.3 29.34 19 23 271 344 -002 77 84 98 1 0 -1 000 52 14 04 2.2 0.6 29.33 17 22 272 344 -007 89 92103 0 0 -1 008 53 14 05 2.2 1.2 29.31 15 20 275 348 -005 93 98104 0 0 -1 024 54 14 06 2.5 1.6 29.29 15 20 276 349 -002 94 99104 0 0 -1 031 55 14 07 2.5 1.7 29.29 16 19 268 341 -003 94100102 0 0 0 041 56 14 08 2.8 1.5 29.29 14 18 257 329 000 91 92104 1 0 0 018 57 14 09 3.2 1.5 29.28 13 18 253 325 000 88 84104 1 0 0 000 58 14 10 3.5 1.3 29.29 15 21 250 323 000 85 86101 1 0 0 000 59 14 11 3.3 1.6 29.30 17 23 245 318 000 88 93103 1 0 0 000 60 14 12 3.2 1.0 29.32 17 22 239 311 000 84 88 94 1 0 0 004 61 14 13 3.4 0.8 29.34 17 22 245 318 000 81 82 80 1 0 0 000 62 14 14 3.4 1.0 29.36 20 27 245 317 -001 83 92 98 1 0 0 000 63 14 15 3.5 0.8 29.38 22 28 238 310 -002 81 90 86 1 0 -1 002 64 14 16 3.2 -0.1 29.41 22 28 233 306 000 77 83 94 1 0 -1 001 65 14 17 2.6 1.2 29.43 20 27 238 310 003 89 90103 0 0 0 006 66 14 18 3.1 1.0 29.44 21 28 239 312 -001 85 90 84 1 0 0 010 67 14 19 2.3 1.2 29.47 25 35 242 314 -001 92 94104 0 0 -1 018 68 14 20 3.3 0.2 29.49 26 34 238 310 001 78 87 91 1 0 -1 011 69 14 21 3.1 0.4 29.52 26 36 237 309 001 81 88 92 1 0 -1 004 70 14 22 2.8 -0.1 29.55 27 36 239 311 001 79 85 80 1 0 -1 000 71 14 23 3.1 -0.5 29.57 27 35 237 310 000 74 81 79 1 0 -1 000 72 15 00 2.6 0.5 29.60 26 36 239 312 002 85 91 89 0 0 -1 004 73 15 01 3.3 -1.0 29.62 27 35 238 311 000 71 77 80 1 0 -1 000 74 15 02 3.2 -0.7 29.63 27 35 242 315 000 73 80 82 1 0 -1 000 75 15 03 2.8 0.7 29.66 24 32 245 317 -002 85 92 82 0 0 -1 001 76 15 04 3.2 -0.4 29.67 25 33 240 312 000 74 80 76 1 0 -1 000 77 15 05 3.1 -0.4 29.68 25 32 246 318 -001 75 83 87 1 0 -1 000 78 15 06 3.0 -0.6 29.69 24 35 251 323 000 74 79 90 1 0 -1 001 79 15 07 3.3 -0.4 29.70 25 32 252 324 002 74 82 85 1 0 -1 000 80 15 08 3.1 0.3 29.71 24 31 253 326 000 80 89 93 1 0 -1 000 81 15 09 3.1 -0.3 29.71 23 30 256 328 000 76 84 94 1 0 -1 000 82 15 10 3.3 -0.3 29.70 21 28 259 331 000 75 81 91 1 0 -1 000 83 15 11 3.5 -0.3 29.69 20 26 265 338 -001 74 80 93 1 0 -1 000 84 15 12 2.6 0.4 29.69 21 26 266 338 -004 84 89104 0 0 -1 004 85 15 13 2.5 1.1 29.69 19 26 274 346 -003 90 96104 0 0 -1 021 86 15 14 2.6 1.4 29.67 18 24 281 354 000 91 96102 0 0 0 007 87 15 15 2.9 1.5 29.65 19 25 288 1 -001 90 93104 1 0 0 005 88 15 16 2.8 1.4 29.63 18 23 292 5 000 90 92104 1 0 0 002 89 15 17 3.0 1.4 29.60 17 23 301 14 000 88 87104 1 0 0 004 90 15 18 3.2 1.3 29.58 17 23 310 23 -002 86 83103 1 0 0 007 91 15 19 3.4 1.1 29.55 19 24 310 23 000 83 88103 1 0 0 002 92 15 20 3.3 1.7 29.52 18 25 313 26 000 88 88103 1 0 0 000 93 15 21 3.6 2.1 29.48 18 25 318 30 000 88 98102 2 0 0 000 94 15 22 3.7 2.4 29.44 18 24 320 33 -001 91100102 2 1 0 000 95 15 23 3.7 2.5 29.41 19 26 324 37 000 91100102 2 1 0 001 96 16 00 3.9 2.9 29.38 19 24 321 34 003 93100101 2 1 0 003 97 16 01 3.8 3.2 29.35 18 23 310 23 -004 96100101 2 1 0 017 98 16 02 3.6 3.3 29.32 17 22 302 15 000 98100 97 2 1 0 046 99 16 03 3.8 3.0 29.30 18 23 290 3 001 94100 88 2 1 0 034 100 16 04 3.6 2.9 29.28 19 25 280 353 -001 95100101 2 1 0 049 101 16 05 3.2 2.4 29.25 19 24 274 346 000 94100103 1 0 0 049 102 16 06 3.0 2.1 29.20 16 21 278 350 -001 93 96 98 1 0 0 019 103 16 07 3.0 2.0 29.19 18 22 281 353 -004 93 99101 1 0 0 013 104 16 08 2.9 1.9 29.17 19 25 279 351 -003 93 98103 1 0 0 030 105 16 09 2.9 1.9 29.15 20 28 274 346 -003 93 99103 1 0 0 056 106 16 10 3.2 1.9 29.13 20 28 263 335 -003 91 93102 1 0 0 020 107 16 11 3.4 1.8 29.13 21 29 261 334 000 88 96103 1 0 0 005 108 16 12 3.5 1.9 29.12 21 30 260 332 001 88 96103 1 0 0 008 109 16 13 3.7 2.1 29.11 22 31 257 329 003 89 94103 2 1 0 004 110 16 14 3.8 2.1 29.12 23 32 259 331 000 87 97100 2 0 0 000 111 16 15 3.9 1.9 29.12 24 32 262 335 -001 86 95101 2 1 0 000 112 16 16 3.5 2.1 29.12 24 33 264 336 -002 89 99103 1 0 0 025 113 16 17 3.2 2.0 29.12 25 34 257 330 -001 91 98103 1 0 0 043 114 16 18 3.6 1.5 29.13 25 35 261 333 -002 85 94 93 2 0 0 025 115 16 19 2.8 1.7 29.12 25 35 267 340 -006 92 97103 1 0 0 020 116 16 20 2.9 1.8 29.12 25 36 260 333 -002 92 98104 1 0 0 117 117 16 21 2.7 1.6 29.13 27 39 259 332 -012 92 95103 0 0 0 075 118 16 22 3.3 1.1 29.13 26 36 256 328 000 84 92 99 1 0 0 038 119 16 23 3.4 1.1 29.13 24 32 259 332 000 84 94103 1 0 0 000 120 17 00 2.9 1.7 29.14 24 33 250 322 000 92 95100 1 0 0 033 * 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.