Heard Island site lat/lon = (-53.0000,72.6000) cell lat/lon = (-53.0015,72.5908) Forecast initialized at 2025-09-22/00 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 22 00 -1.4 -4.4 29.26 18 20 250 322 000 78 85 94 -3 -4 -5 000 1 22 01 -0.8 -6.1 29.28 17 21 258 330 000 65 74 86 -2 -4 -5 009 2 22 02 -1.0 -6.4 29.30 21 24 254 327 001 64 72 77 -2 -4 -5 000 3 22 03 -1.1 -7.1 29.30 18 22 271 344 000 61 70 87 -3 -4 -6 000 4 22 04 -1.7 -4.6 29.33 19 23 266 338 -002 81 90 98 -3 -5 -6 019 5 22 05 -1.4 -5.3 29.33 19 23 263 336 -001 74 85 89 -3 -4 -6 014 6 22 06 -0.9 -6.6 29.34 20 24 269 342 004 62 70 81 -2 -4 -5 000 7 22 07 -1.3 -5.5 29.36 20 24 266 338 000 72 82 91 -3 -4 -6 007 8 22 08 -1.5 -4.5 29.37 20 24 264 336 -005 80 92103 -3 -5 -6 007 9 22 09 -1.0 -4.7 29.38 20 25 266 338 007 75 83 78 -2 -4 -5 027 10 22 10 -0.6 -6.1 29.38 21 25 270 343 002 63 71 82 -2 -4 -5 000 11 22 11 -1.0 -3.8 29.39 21 27 272 345 -002 81 90101 -3 -4 -5 011 12 22 12 -0.7 -3.5 29.39 21 27 277 350 001 81 87 91 -2 -4 -5 009 13 22 13 -0.4 -4.3 29.39 22 29 279 351 001 73 83 88 -2 -3 -5 000 14 22 14 -0.5 -2.6 29.40 20 28 288 0 -001 86 92 96 -2 -3 -4 021 15 22 15 0.5 -3.6 29.39 23 29 286 358 002 71 79 85 -1 -2 -4 004 16 22 16 -0.1 -1.7 29.39 23 30 301 13 -003 89 97102 -1 -3 -4 011 17 22 17 0.4 -1.2 29.38 24 33 288 1 007 88 97105 -1 -2 -3 092 18 22 18 0.4 -1.3 29.38 25 33 291 4 000 87 92100 -1 -2 -3 002 19 22 19 0.8 -1.6 29.37 24 32 294 6 001 83 94 93 0 -2 -3 000 20 22 20 0.4 -0.7 29.36 25 37 298 11 -006 91 95103 -1 -2 -3 027 21 22 21 1.1 -1.9 29.35 26 33 287 0 000 78 86 89 0 -1 -3 007 22 22 22 1.1 -1.5 29.34 25 36 290 3 000 81 89 90 0 -1 -3 003 23 22 23 1.2 -2.0 29.33 27 39 290 2 001 77 85 90 0 -1 -3 000 24 23 00 1.6 -2.9 29.32 26 35 285 357 000 69 75 84 0 -1 -2 000 25 23 01 1.0 -1.8 29.31 28 38 296 9 000 79 87 95 0 -1 -3 000 26 23 02 1.3 -2.2 29.30 29 37 282 355 000 75 84 88 0 -1 -3 002 27 23 03 0.5 -0.1 29.29 23 32 287 0 -015 96101106 0 -2 -3 105 28 23 04 1.1 -2.9 29.28 27 36 277 349 000 72 78 89 0 -1 -3 027 29 23 05 0.4 -1.1 29.28 26 34 287 359 -005 89 97104 -1 -2 -3 007 30 23 06 1.0 -1.9 29.27 27 37 280 353 000 79 87 78 0 -2 -3 046 31 23 07 0.9 -2.6 29.26 27 37 282 355 000 75 83 82 0 -2 -3 000 32 23 08 0.1 -1.2 29.27 27 35 260 332 -007 90 98100 -1 -3 -4 089 33 23 09 -0.0 -5.7 29.27 24 35 264 336 -004 62 68 80 -1 -3 -4 013 34 23 10 -1.1 -4.9 29.30 24 32 241 314 000 74 80 86 -3 -4 -5 016 35 23 11 -0.9 -4.7 29.31 28 34 255 328 000 74 85 95 -2 -4 -5 001 36 23 12 -1.5 -4.1 29.33 24 31 239 312 000 82 92 95 -3 -5 -6 034 37 23 13 -1.4 -5.7 29.36 26 33 240 313 001 71 79 88 -3 -5 -6 004 38 23 14 -1.4 -6.9 29.40 26 34 238 311 000 63 68 71 -3 -5 -6 005 39 23 15 -1.1 -6.1 29.43 28 34 242 315 003 66 74 82 -3 -4 -6 000 40 23 16 -0.9 -5.6 29.46 27 35 247 319 003 68 73 75 -2 -4 -5 001 41 23 17 -1.2 -4.1 29.48 29 37 242 315 000 80 91103 -3 -4 -6 007 42 23 18 -1.2 -4.6 29.51 27 33 229 301 002 77 86 91 -3 -4 -6 035 43 23 19 -1.4 -5.9 29.54 27 36 228 301 001 69 77 82 -3 -5 -6 000 44 23 20 -1.3 -7.1 29.57 27 33 229 302 002 62 67 82 -3 -4 -6 000 45 23 21 -1.3 -6.2 29.60 26 31 227 299 003 67 75 85 -3 -4 -6 000 46 23 22 -1.7 -4.7 29.63 23 30 226 298 004 79 89 94 -3 -5 -6 013 47 23 23 -1.5 -7.2 29.66 26 31 226 299 002 62 68 83 -3 -5 -6 001 48 24 00 -1.5 -6.3 29.69 24 30 226 299 002 68 76 87 -3 -5 -6 000 49 24 01 -1.5 -7.0 29.72 24 29 226 298 001 64 71 85 -3 -5 -6 000 50 24 02 -1.9 -6.0 29.74 22 27 228 301 001 72 83 88 -4 -5 -6 002 51 24 03 -1.8 -5.6 29.76 20 25 230 303 001 74 86 93 -3 -5 -6 002 52 24 04 -1.7 -5.8 29.78 19 23 224 297 002 72 83 94 -3 -5 -6 005 53 24 05 -1.4 -6.8 29.80 18 22 225 297 002 65 74 85 -3 -4 -6 000 54 24 06 -1.3 -6.0 29.81 16 19 226 299 001 69 80 93 -3 -4 -6 000 55 24 07 -1.5 -6.5 29.82 15 17 215 288 002 67 78 99 -3 -4 -6 001 56 24 08 -1.3 -7.8 29.83 12 16 218 291 003 59 68 92 -3 -4 -6 000 57 24 09 -1.1 -8.4 29.83 11 13 236 309 002 55 63 87 -2 -4 -5 000 58 24 10 -1.0 -8.3 29.83 11 13 254 327 000 55 63 87 -2 -4 -5 000 59 24 11 -0.9 -8.1 29.82 10 13 269 342 000 55 64 86 -2 -4 -5 000 60 24 12 -0.7 -7.6 29.81 10 12 278 351 000 57 66 92 -2 -3 -5 000 61 24 13 -0.6 -7.0 29.81 10 11 283 356 001 59 69 94 -2 -3 -5 000 62 24 14 -0.5 -6.8 29.80 10 10 287 359 000 60 70 91 -2 -3 -5 000 63 24 15 -0.6 -6.8 29.79 9 9 294 7 000 61 70 90 -2 -3 -5 000 64 24 16 -0.6 -7.1 29.78 8 8 301 14 000 59 69 90 -2 -3 -5 000 65 24 17 -0.7 -7.4 29.76 8 8 312 25 000 59 68 92 -2 -3 -5 000 66 24 18 -0.7 -7.5 29.74 7 7 325 38 000 58 68 92 -2 -4 -5 000 67 24 19 -0.8 -7.1 29.71 6 7 338 50 002 61 72 91 -2 -4 -5 000 68 24 20 -0.8 -6.6 29.68 5 6 353 65 001 64 75 93 -2 -4 -5 000 69 24 21 -0.7 -6.3 29.64 5 6 14 87 000 65 76103 -2 -3 -5 000 70 24 22 -0.8 -6.4 29.61 7 7 33 106 000 64 76107 -2 -4 -5 000 71 24 23 -0.9 -6.6 29.58 9 9 44 117 000 64 75106 -2 -4 -5 000 72 25 00 -1.0 -6.8 29.54 10 10 54 127 000 63 73 99 -2 -4 -5 000 73 25 01 -1.0 -6.6 29.51 10 11 68 140 000 64 74 98 -2 -4 -5 000 74 25 02 -0.9 -5.9 29.48 11 13 76 148 000 67 78105 -2 -4 -5 000 75 25 03 -0.8 -5.0 29.44 12 14 73 146 -001 72 85106 -2 -4 -5 000 76 25 04 -0.7 -5.3 29.41 13 15 69 142 -002 70 81102 -2 -4 -5 000 77 25 05 -0.8 -6.2 29.37 14 15 74 146 -002 64 75108 -2 -4 -5 000 78 25 06 -0.9 -5.5 29.33 14 15 89 162 -001 69 80108 -2 -4 -5 000 79 25 07 -0.9 -4.6 29.30 14 15 100 173 -001 75 88108 -2 -4 -5 001 80 25 08 -0.9 -4.4 29.27 13 15 106 179 -002 76 88108 -2 -4 -5 003 81 25 09 -0.8 -4.6 29.25 12 14 116 188 -002 74 87107 -2 -4 -5 002 82 25 10 -0.7 -4.5 29.22 12 13 126 199 000 74 86107 -2 -3 -5 001 83 25 11 -0.7 -4.0 29.20 12 13 134 207 002 77 91106 -2 -4 -5 001 84 25 12 -0.8 -3.5 29.19 12 13 137 210 004 81 91105 -2 -4 -5 002 85 25 13 -0.8 -3.4 29.17 10 11 142 215 001 83 93104 -2 -4 -5 006 86 25 14 -0.9 -3.2 29.17 9 10 152 225 -002 84 93105 -2 -4 -5 009 87 25 15 -0.9 -3.2 29.16 8 9 159 232 000 85 93104 -2 -3 -5 008 88 25 16 -0.8 -3.2 29.16 7 8 169 241 001 84 94105 -2 -3 -5 004 89 25 17 -0.8 -3.0 29.16 7 7 191 263 000 86 93108 -2 -3 -5 008 90 25 18 -0.8 -2.9 29.17 8 8 206 279 001 86 92106 -2 -3 -4 011 91 25 19 -0.7 -2.9 29.17 9 10 220 293 001 85 95104 -2 -3 -4 008 92 25 20 -0.5 -3.4 29.18 9 11 235 308 000 80 94 95 -2 -3 -4 003 93 25 21 -0.3 -4.5 29.18 9 10 254 327 000 72 81 90 -1 -3 -4 000 94 25 22 -0.4 -4.3 29.18 8 12 278 351 000 73 83 91 -2 -3 -4 000 95 25 23 -0.4 -3.4 29.18 10 13 302 15 000 80 90 94 -2 -3 -4 002 96 26 00 -0.2 -3.6 29.17 12 14 321 33 000 76 84 91 -1 -3 -4 002 97 26 01 0.1 -3.8 29.16 14 15 337 49 000 73 81 82 -1 -3 -4 000 98 26 02 0.2 -3.1 29.15 16 19 337 49 000 76 87 93 -1 -3 -4 000 99 26 03 0.2 -2.5 29.12 17 21 346 59 000 81 91 96 -1 -3 -4 003 100 26 04 0.3 -1.7 29.10 19 26 354 67 -001 85 95107 -1 -2 -3 003 101 26 05 0.6 -1.2 29.07 22 30 356 68 000 87 97106 -1 -2 -3 004 102 26 06 0.8 -0.5 29.04 23 31 355 67 000 90 97105 0 -1 -2 008 103 26 07 1.1 -0.3 29.00 24 32 356 69 001 90100102 0 -1 -2 002 104 26 08 1.2 -0.1 28.95 25 34 0 73 001 90100100 0 -1 -2 003 105 26 09 1.4 0.2 28.90 28 38 2 75 001 91101101 0 -1 -1 008 106 26 10 1.6 0.4 28.84 28 40 7 80 000 91101103 0 0 -1 005 107 26 11 1.5 0.7 28.78 29 42 15 88 -006 95100102 0 0 0 016 108 26 12 1.4 0.9 28.70 31 45 20 93 -009 97100101 0 0 0 117 109 26 13 1.5 1.0 28.62 32 47 19 92 -016 97100101 0 0 0 173 110 26 14 1.5 1.0 28.54 32 47 16 88 -003 97100102 0 0 0 238 111 26 15 2.1 1.5 28.47 31 46 10 83 -004 96100101 1 0 0 079 112 26 16 3.2 3.0 28.42 29 45 354 67 -004 100100100 2 2 1 071 113 26 17 3.0 2.8 28.39 25 38 342 55 -004 100100 97 2 1 0 003 114 26 18 2.5 2.4 28.37 19 30 331 44 000 100100103 2 1 0 002 115 26 19 2.3 2.2 28.35 17 29 336 49 004 100100103 1 0 0 004 116 26 20 2.0 1.9 28.33 22 33 334 47 004 100100104 1 0 0 016 117 26 21 2.2 0.5 28.31 22 33 328 40 000 87 92 98 1 0 -1 000 118 26 22 1.9 0.4 28.30 23 33 332 45 000 90 98104 0 0 -1 003 119 26 23 1.3 0.3 28.30 25 35 303 15 -004 93 96 99 0 -1 -2 042 120 27 00 1.8 -0.6 28.30 23 34 317 30 000 83 91 98 0 0 -2 003 * 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.