Heard Island site lat/lon = (-53.0000,72.6000) cell lat/lon = (-53.0015,72.5908) Forecast initialized at 2025-12-22/12 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 22 12 2.9 0.0 29.37 29 32 289 2 000 79 85 83 1 0 -1 000 1 22 13 2.8 -0.2 29.36 30 40 290 2 000 78 86 86 1 0 -1 000 2 22 14 2.9 -0.4 29.38 31 42 288 1 000 77 84 93 1 0 -1 000 3 22 15 2.8 -0.4 29.37 31 43 284 357 000 77 86100 1 0 -1 000 4 22 16 2.5 0.3 29.39 31 43 280 353 000 84 93104 0 0 -1 004 5 22 17 2.3 0.8 29.40 30 41 276 349 000 89 98104 0 0 -1 013 6 22 18 2.4 1.1 29.41 27 36 269 342 000 91 99100 0 0 -1 015 7 22 19 2.3 1.2 29.42 24 31 262 334 -001 92 95103 0 0 -1 012 8 22 20 2.2 1.3 29.44 22 31 258 331 000 93 94101 0 0 -1 036 9 22 21 2.3 1.0 29.45 22 31 255 327 000 91 94100 0 0 -1 009 10 22 22 2.1 0.6 29.46 23 32 253 326 000 89 93 97 0 0 -1 019 11 22 23 2.2 0.5 29.50 21 29 253 326 000 88 94 98 0 0 -1 003 12 23 00 2.3 0.3 29.52 20 27 254 326 001 85 95 97 0 0 -1 001 13 23 01 2.1 0.5 29.54 20 26 257 330 000 88 93 99 0 0 -1 002 14 23 02 1.8 0.9 29.55 20 28 260 332 -001 93 95105 0 0 -1 020 15 23 03 2.3 0.3 29.57 22 29 251 323 001 85 91 95 0 0 -1 024 16 23 04 1.5 0.8 29.58 22 30 261 333 -003 96 96105 0 -1 -2 019 17 23 05 2.0 -1.1 29.61 23 32 238 310 000 77 80 74 0 0 -1 057 18 23 06 2.6 -1.1 29.63 18 24 247 320 000 74 82100 1 0 -1 000 19 23 07 2.3 -0.1 29.64 18 23 258 330 000 83 92 96 0 0 -2 002 20 23 08 2.6 -1.1 29.64 19 26 251 324 000 74 79 72 1 0 -1 001 21 23 09 2.6 -1.2 29.65 19 25 252 325 000 73 79 87 1 0 -1 000 22 23 10 2.6 -0.7 29.66 17 24 262 334 000 76 81 88 1 0 -1 000 23 23 11 2.8 -0.3 29.67 17 24 262 334 000 78 83 79 1 0 -1 000 24 23 12 2.7 -0.3 29.67 17 22 260 332 000 78 80 75 1 0 -1 000 25 23 13 2.7 -0.3 29.67 14 19 257 330 000 78 82 69 1 0 -1 000 26 23 14 2.7 0.3 29.69 14 19 265 338 000 82 89 69 1 0 -1 000 27 23 15 2.6 0.6 29.69 14 18 272 344 000 85 91 82 1 0 -1 000 28 23 16 2.5 0.4 29.69 14 19 267 339 000 84 91 96 0 0 -1 000 29 23 17 2.3 -0.0 29.70 14 19 263 336 000 83 91 96 0 0 -2 000 30 23 18 2.0 -0.1 29.71 14 18 266 339 000 84 87 96 0 0 -1 000 31 23 19 2.0 -0.2 29.71 13 18 270 343 000 84 78 92 0 0 -1 000 32 23 20 2.4 0.0 29.72 13 18 273 346 000 82 87 86 0 0 -1 000 33 23 21 2.6 0.3 29.72 13 17 270 343 001 83 88 87 1 0 -1 000 34 23 22 2.5 -0.0 29.74 12 17 264 336 000 82 71 87 0 0 -1 000 35 23 23 2.6 -0.0 29.74 11 15 267 340 000 81 78 86 1 0 -1 000 36 24 00 2.6 0.7 29.74 10 13 277 349 000 86 83 79 1 0 0 000 37 24 01 2.6 1.3 29.74 9 11 292 4 000 90 86 74 1 0 0 000 38 24 02 2.7 1.6 29.76 10 13 303 16 001 92 87 85 1 0 0 000 39 24 03 2.5 1.6 29.75 10 13 313 25 003 94 92 97 1 0 0 000 40 24 04 2.5 1.6 29.76 11 14 315 28 001 94 93102 0 0 0 000 41 24 05 2.7 1.7 29.75 13 16 323 35 002 93 98103 1 0 0 000 42 24 06 2.9 2.1 29.74 14 19 322 35 001 94100103 1 0 0 000 43 24 07 2.9 2.1 29.72 16 21 315 28 001 94100102 1 0 0 000 44 24 08 2.9 1.8 29.68 16 22 317 30 -002 92100 92 1 0 0 002 45 24 09 2.6 2.1 29.65 20 27 327 39 -004 97100 99 1 0 0 043 46 24 10 2.3 1.8 29.60 23 32 331 43 -008 96100100 1 0 0 138 47 24 11 3.1 2.5 29.55 26 39 331 44 -001 96100100 2 1 1 164 48 24 12 3.5 3.0 29.49 28 42 325 38 -008 96100100 2 2 2 190 49 24 13 4.0 3.6 29.46 28 44 312 25 -007 97100100 3 2 2 150 50 24 14 4.5 4.2 29.42 28 47 298 11 -001 98100100 4 3 3 109 51 24 15 4.7 4.6 29.40 29 48 288 1 -003 100100100 4 3 3 023 52 24 16 4.7 4.6 29.39 29 47 282 354 -005 100100100 4 3 3 004 53 24 17 4.6 4.5 29.40 29 47 278 351 -006 100100100 4 3 3 000 54 24 18 4.5 4.3 29.41 27 45 278 350 -004 100100 97 4 3 2 001 55 24 19 4.3 4.1 29.41 27 43 274 347 -002 100100 75 3 2 1 001 56 24 20 3.6 3.5 29.43 29 42 268 340 -006 100100 61 2 1 0 004 57 24 21 2.9 2.7 29.45 28 39 261 334 -001 99100 56 1 0 0 003 58 24 22 2.7 1.5 29.46 26 36 259 332 -005 92100 60 1 0 -1 003 59 24 23 2.7 1.0 29.48 25 35 261 334 -005 87 99 86 1 0 -1 000 60 25 00 2.8 0.6 29.50 25 34 263 335 -002 84 95103 1 0 -1 000 61 25 01 2.8 0.5 29.50 23 32 267 339 -002 83 94 97 1 0 -1 000 62 25 02 2.9 0.6 29.50 23 31 269 342 001 83 94 95 1 0 -1 000 63 25 03 2.9 0.6 29.49 22 29 274 346 001 83 91104 1 0 -1 000 64 25 04 2.9 0.7 29.49 21 29 275 347 -001 84 94104 1 0 -1 002 65 25 05 2.9 0.7 29.48 21 28 274 347 000 84 93104 1 0 -1 001 66 25 06 2.9 0.7 29.48 20 27 274 346 000 84 91104 1 0 -1 001 67 25 07 2.9 0.6 29.48 20 27 273 345 -001 83 91104 1 0 -1 000 68 25 08 2.9 0.4 29.47 19 25 271 343 -002 82 87104 1 0 0 000 69 25 09 2.9 0.4 29.46 16 23 272 345 000 82 77104 1 0 0 001 70 25 10 3.0 0.6 29.47 15 23 271 344 000 83 79104 1 0 0 002 71 25 11 3.0 0.8 29.47 15 25 273 345 000 84 79104 1 0 0 003 72 25 12 3.0 0.4 29.48 17 25 262 335 000 81 80104 1 0 0 003 73 25 13 3.0 -0.0 29.49 18 26 252 325 000 78 85 94 1 0 -1 000 74 25 14 3.0 0.3 29.50 18 27 252 324 001 80 83 96 1 0 -1 000 75 25 15 2.9 0.2 29.51 19 25 253 325 000 80 87 86 1 0 -1 000 76 25 16 2.9 0.5 29.53 19 25 256 329 000 83 90 78 1 0 -1 000 77 25 17 2.9 0.8 29.55 20 26 258 330 001 85 92 91 1 0 -1 000 78 25 18 2.9 0.7 29.57 20 26 253 326 001 84 93 85 1 0 -1 000 79 25 19 2.8 0.3 29.59 20 26 249 321 001 82 87 78 1 0 -1 000 80 25 20 2.8 -0.0 29.61 19 28 250 322 001 79 80 79 1 0 0 000 81 25 21 2.9 0.1 29.63 20 28 252 325 000 80 86 86 1 0 -1 000 82 25 22 2.8 0.5 29.65 20 27 249 321 001 84 92 72 1 0 -1 000 83 25 23 2.8 0.6 29.68 19 27 250 323 001 84 90 75 1 0 0 000 84 26 00 2.9 0.5 29.70 18 26 254 327 000 82 90 72 1 0 -1 000 85 26 01 2.9 0.4 29.72 18 27 259 331 000 82 83 67 1 0 0 000 86 26 02 2.9 0.6 29.74 18 25 262 335 000 83 90 84 1 0 -1 000 87 26 03 2.8 0.8 29.75 18 24 265 337 001 85 91 86 1 0 -1 000 88 26 04 2.8 0.6 29.76 17 22 270 343 001 84 87 79 1 0 0 000 89 26 05 2.8 0.6 29.78 17 22 275 347 001 84 86 78 1 0 0 000 90 26 06 2.7 1.2 29.79 16 21 279 351 001 89 92 78 1 0 0 000 91 26 07 2.9 1.0 29.80 15 21 281 354 000 86 89 72 1 0 0 000 92 26 08 3.0 0.6 29.81 16 22 278 350 000 82 88 74 1 0 0 000 93 26 09 2.8 0.8 29.82 17 22 278 350 000 85 83 87 1 0 0 000 94 26 10 2.8 1.1 29.83 15 21 281 354 000 87 81 89 1 0 0 000 95 26 11 3.0 1.2 29.84 15 22 283 356 000 86 87 86 1 0 0 000 96 26 12 3.1 1.2 29.84 15 22 282 354 -001 86 92 83 1 0 0 000 97 26 13 3.0 1.3 29.85 15 22 284 356 000 87 91 98 1 0 0 000 98 26 14 3.0 1.0 29.85 14 21 281 354 000 85 88 74 1 0 0 000 99 26 15 3.0 0.8 29.85 13 19 282 354 000 83 78 76 1 0 0 000 100 26 16 3.0 0.8 29.86 12 17 295 7 000 83 67 91 1 0 0 000 101 26 17 2.9 1.4 29.86 13 19 306 19 000 89 84102 1 0 0 000 102 26 18 2.9 2.0 29.86 14 19 312 24 000 93 88 94 1 0 0 000 103 26 19 3.0 2.1 29.85 15 21 312 25 000 94 99 99 1 0 0 000 104 26 20 3.0 1.9 29.85 14 20 315 28 001 91 70 83 1 1 0 000 105 26 21 3.0 1.8 29.84 16 25 324 36 000 91 81 87 1 0 0 000 106 26 22 3.1 1.1 29.83 18 29 324 37 001 86 69 95 1 1 0 000 107 26 23 3.1 0.9 29.83 20 31 321 34 -001 84 79103 1 0 0 000 108 27 00 3.1 1.3 29.82 20 30 322 34 -001 86 82101 1 0 0 000 109 27 01 3.0 1.4 29.82 22 32 322 34 -005 88 97100 1 0 0 011 110 27 02 2.9 1.7 29.81 23 34 324 37 001 91 99 94 1 0 0 013 111 27 03 3.2 1.5 29.79 22 34 328 40 -005 88 92 87 2 0 0 004 112 27 04 3.2 1.6 29.78 23 34 325 37 -001 88 97 95 2 0 0 013 113 27 05 3.3 1.7 29.77 23 33 321 34 -006 89 98 86 2 0 0 005 114 27 06 3.2 2.0 29.77 22 32 317 30 -012 91 99101 2 0 0 038 115 27 07 3.3 2.1 29.77 22 32 316 29 000 91 99100 2 0 0 009 116 27 08 3.3 2.1 29.77 21 31 314 27 -001 91 99100 2 1 0 000 117 27 09 3.3 2.1 29.76 20 29 315 28 -003 91 99100 2 1 0 001 118 27 10 3.3 2.2 29.75 19 28 319 31 -004 92 99100 2 1 0 003 119 27 11 3.3 2.2 29.73 18 28 320 32 -003 92 99100 2 1 0 007 120 27 12 3.2 2.3 29.72 18 28 317 29 -002 94100100 2 1 0 006 * 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.