Heard Island site lat/lon = (-53.0000,72.6000) cell lat/lon = (-53.0015,72.5908) Forecast initialized at 2026-10-12/00 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 0.3 -2.7 29.46 27 28 263 335 000 78 83 79 -1 -3 -4 000 1 12 01 0.2 -3.0 29.48 25 34 265 337 -001 77 86 89 -1 -3 -4 001 2 12 02 0.4 -3.3 29.49 26 34 267 339 000 74 83 91 -1 -2 -4 000 3 12 03 0.5 -3.3 29.49 26 35 272 344 -001 73 82 91 -1 -2 -4 000 4 12 04 0.2 -3.0 29.47 28 37 273 345 000 77 87 97 -1 -3 -4 007 5 12 05 0.3 -2.8 29.48 28 39 274 346 000 78 87 96 -1 -2 -4 006 6 12 06 0.2 -2.7 29.46 29 39 273 346 000 79 88 95 -1 -2 -4 009 7 12 07 0.3 -2.7 29.47 29 39 274 346 -001 78 88 97 -1 -2 -4 003 8 12 08 0.2 -2.5 29.45 28 37 272 344 000 80 90100 -1 -3 -4 004 9 12 09 0.3 -2.5 29.44 27 36 271 344 -001 79 89100 -1 -2 -4 006 10 12 10 0.2 -2.3 29.42 26 35 275 348 000 81 90100 -1 -2 -4 002 11 12 11 0.2 -2.2 29.40 24 33 279 352 000 82 91102 -1 -2 -4 008 12 12 12 0.5 -2.3 29.37 24 32 281 354 000 80 89 97 -1 -2 -3 003 13 12 13 0.2 -1.4 29.34 23 31 288 0 000 88 95106 -1 -2 -3 013 14 12 14 0.5 -1.1 29.31 22 31 292 5 000 88 97106 -1 -2 -3 014 15 12 15 0.5 -0.7 29.27 22 30 298 11 -001 91 97100 -1 -2 -3 020 16 12 16 0.5 -0.3 29.22 21 28 308 21 -001 95 96105 -1 -2 -3 041 17 12 17 0.7 -0.3 29.18 21 29 307 20 -001 93 97101 0 -1 -2 041 18 12 18 0.7 -0.1 29.13 20 28 313 25 -002 95 98103 0 -1 -2 035 19 12 19 0.7 0.1 29.09 18 26 313 25 000 96 99105 0 -1 -2 039 20 12 20 0.8 0.1 29.05 17 23 312 25 -001 95 99104 0 -1 -2 042 21 12 21 0.8 0.2 29.02 14 19 309 22 -001 95100103 0 -1 -2 027 22 12 22 0.8 0.2 29.00 11 15 305 18 -001 96101105 0 -1 -2 018 23 12 23 0.9 0.3 29.00 9 13 283 356 -001 96100105 0 -1 -2 012 24 13 00 1.0 0.3 29.04 11 16 249 322 002 94101105 0 -1 -2 007 25 13 01 1.1 0.2 29.07 15 20 228 300 001 93101104 0 -1 -2 001 26 13 02 1.1 -0.1 29.10 18 24 221 294 001 91101102 0 -1 -2 000 27 13 03 1.3 -0.6 29.13 19 26 229 302 000 86 88 94 0 -1 -2 000 28 13 04 1.2 -1.0 29.15 20 27 243 315 000 84 92 94 0 -1 -3 000 29 13 05 0.2 -2.7 29.17 26 35 225 297 003 79 86 93 -1 -3 -4 002 30 13 06 0.1 -4.1 29.19 22 28 230 302 000 71 81 82 -1 -3 -4 000 31 13 07 -0.5 -4.5 29.20 22 28 236 308 000 72 80 90 -2 -3 -5 001 32 13 08 -0.5 -3.8 29.21 21 27 242 315 001 77 86100 -2 -3 -5 002 33 13 09 -0.2 -5.3 29.22 22 27 243 316 -001 65 73 86 -2 -3 -5 001 34 13 10 -0.5 -4.0 29.21 21 27 245 318 000 75 86 98 -2 -3 -5 002 35 13 11 -0.8 -3.1 29.20 19 24 245 317 000 84 93107 -2 -4 -5 011 36 13 12 -0.8 -3.1 29.19 17 22 245 317 002 84 93105 -2 -4 -5 028 37 13 13 -0.7 -3.2 29.17 15 20 248 321 -001 83 95108 -2 -3 -5 011 38 13 14 -0.9 -3.0 29.15 14 17 242 315 000 86 95106 -2 -4 -5 022 39 13 15 -1.1 -2.9 29.14 10 12 233 305 000 88 95107 -2 -4 -5 023 40 13 16 -1.4 -3.3 29.12 5 8 219 292 -001 88 92106 -3 -4 -5 032 41 13 17 -1.5 -3.9 29.09 2 6 218 291 000 85 92102 -3 -4 -5 011 42 13 18 -1.5 -4.1 29.05 0 4 58 131 000 84 86 96 -3 -4 -5 002 43 13 19 -1.4 -4.1 29.02 2 3 12 85 000 83 76 94 -3 -4 -5 000 44 13 20 -1.2 -4.1 29.00 3 3 0 73 000 81 73 96 -2 -4 -5 000 45 13 21 -1.1 -4.5 28.97 3 3 3 75 000 78 84 99 -2 -4 -5 001 46 13 22 -1.3 -4.4 28.96 3 3 13 86 000 80 91102 -3 -4 -5 008 47 13 23 -1.5 -3.9 28.94 2 2 62 135 -001 85 92103 -3 -4 -5 017 48 14 00 -1.6 -3.8 28.93 4 5 103 176 -001 86 91104 -3 -4 -5 017 49 14 01 -1.5 -4.2 28.92 7 7 109 181 -001 83 91102 -3 -4 -5 009 50 14 02 -1.4 -4.6 28.93 7 8 117 189 -001 79 88 98 -3 -4 -5 003 51 14 03 -1.3 -4.2 28.94 9 10 130 203 000 81 90102 -3 -4 -5 003 52 14 04 -1.4 -3.6 28.94 14 15 132 205 -001 85 93109 -3 -4 -5 012 53 14 05 -1.3 -5.7 28.96 17 19 127 199 000 70 81103 -3 -4 -6 013 54 14 06 -0.7 -8.5 28.99 14 16 136 209 000 51 57 78 -2 -4 -5 000 55 14 07 -0.7 -8.0 29.03 14 16 151 223 000 54 60 69 -2 -4 -5 000 56 14 08 -0.6 -7.7 29.08 12 16 164 237 -001 55 63 71 -2 -3 -5 000 57 14 09 -0.7 -6.3 29.13 15 16 182 254 001 63 73 91 -2 -4 -5 000 58 14 10 -0.9 -5.1 29.18 16 18 194 267 001 72 83 96 -2 -4 -5 003 59 14 11 -1.0 -4.6 29.22 17 19 208 280 000 76 85 92 -2 -4 -5 004 60 14 12 -0.8 -4.5 29.25 17 19 216 289 001 75 85 93 -2 -4 -5 004 61 14 13 -0.6 -4.4 29.29 17 19 216 288 002 74 85 93 -2 -3 -5 001 62 14 14 -0.5 -4.5 29.32 15 17 220 293 001 73 84 90 -2 -3 -5 000 63 14 15 -0.9 -3.6 29.34 15 19 237 309 -001 81 92 99 -2 -4 -5 005 64 14 16 -0.1 -4.1 29.36 17 23 241 313 000 72 83 77 -1 -3 -4 003 65 14 17 -0.1 -4.6 29.38 20 24 233 306 001 69 78 75 -1 -3 -4 000 66 14 18 -0.0 -5.1 29.39 20 23 238 311 002 65 74 74 -1 -3 -4 000 67 14 19 -1.0 -2.5 29.40 21 27 249 322 -007 90 93102 -2 -4 -5 040 68 14 20 -0.1 -5.3 29.41 22 28 235 308 000 65 72 71 -1 -3 -4 014 69 14 21 -0.2 -4.8 29.42 22 29 238 310 001 69 78 77 -2 -3 -5 000 70 14 22 -0.3 -4.2 29.43 22 28 237 309 000 73 81 86 -2 -3 -4 000 71 14 23 -0.3 -5.1 29.44 19 23 235 308 000 67 76 89 -2 -3 -5 001 72 15 00 -0.2 -6.7 29.46 21 28 227 300 -001 58 63 74 -1 -3 -4 000 73 15 01 -0.4 -5.1 29.48 22 28 232 305 000 68 77 77 -2 -3 -5 000 74 15 02 -0.7 -4.1 29.49 18 22 235 308 000 77 88 97 -2 -4 -5 003 75 15 03 -1.0 -2.3 29.49 16 19 237 309 -001 92 96108 -2 -4 -5 053 76 15 04 -0.6 -3.4 29.50 15 20 223 296 000 81 91 88 -2 -3 -5 052 77 15 05 -0.3 -5.5 29.51 15 20 233 306 000 65 73 80 -2 -3 -5 000 78 15 06 -0.6 -3.3 29.53 17 21 243 316 000 81 92101 -2 -3 -5 005 79 15 07 -0.1 -3.3 29.55 18 24 227 299 000 78 89 96 -1 -3 -4 004 80 15 08 -0.3 -3.4 29.58 17 22 219 292 -001 78 89 97 -2 -3 -4 000 81 15 09 -0.1 -2.9 29.60 16 23 230 303 000 80 93 97 -1 -3 -4 002 82 15 10 0.4 -3.2 29.62 18 24 233 306 000 74 84 89 -1 -2 -4 001 83 15 11 0.6 -2.2 29.64 19 25 243 316 000 80 89 97 -1 -2 -3 000 84 15 12 0.7 -1.2 29.67 19 26 248 321 -001 85 95 74 0 -2 -2 000 85 15 13 1.1 -1.1 29.70 21 30 231 304 001 84 90 94 0 -1 -3 000 86 15 14 1.0 -2.5 29.72 20 27 214 287 003 75 81 73 0 -2 -3 000 87 15 15 1.0 -2.4 29.74 18 25 226 299 002 76 84 88 0 -2 -3 000 88 15 16 0.9 -1.4 29.75 17 23 234 307 001 83 91 94 0 -2 -3 000 89 15 17 1.0 -1.3 29.77 17 22 231 303 000 83 92 88 0 -2 -3 000 90 15 18 1.1 -3.4 29.79 17 24 229 301 001 69 70 82 0 -1 -3 000 91 15 19 1.2 -4.7 29.80 15 20 239 311 001 60 62 83 0 -1 -3 000 92 15 20 1.1 -3.0 29.78 13 18 260 333 004 71 72 87 0 -1 -3 000 93 15 21 0.9 -1.7 29.77 14 18 277 349 001 80 83 84 0 -2 -3 000 94 15 22 0.9 -1.5 29.74 14 17 286 358 000 83 88 85 0 -2 -2 000 95 15 23 1.0 -1.2 29.73 16 21 299 11 -001 84 90 88 0 -1 -2 000 96 16 00 1.0 -1.2 29.70 17 23 310 23 -001 83 87 97 0 -1 -2 000 97 16 01 1.0 -1.5 29.65 19 27 318 31 -001 81 83105 0 -1 -2 000 98 16 02 0.6 -1.1 29.59 22 30 328 40 -001 87 96 96 0 -2 -3 005 99 16 03 0.6 -0.2 29.51 25 35 338 50 -007 95102 99 0 -2 -2 036 100 16 04 0.8 0.2 29.43 28 40 338 50 -005 95101102 0 -1 -2 083 101 16 05 0.9 0.3 29.33 31 44 341 54 -009 96101101 0 -1 -1 104 102 16 06 1.1 0.6 29.26 32 45 335 48 -002 97100102 0 0 -1 161 103 16 07 1.7 0.9 29.19 32 47 323 35 -006 95100102 0 0 0 113 104 16 08 2.2 1.5 29.16 29 42 291 4 -004 95100103 1 0 0 072 105 16 09 2.1 -0.1 29.19 33 48 246 318 002 84 95104 0 0 -1 003 106 16 10 1.7 -1.7 29.25 35 50 238 311 002 76 84106 0 -1 -2 003 107 16 11 1.7 -1.9 29.29 32 45 242 314 004 75 83101 0 -1 -2 000 108 16 12 1.7 -2.0 29.32 30 41 245 317 003 74 81 95 0 -1 -2 000 109 16 13 1.6 -2.2 29.36 30 41 249 322 000 73 80 86 0 -1 -2 000 110 16 14 1.6 -2.5 29.38 29 40 252 325 000 71 76 85 0 -1 -2 000 111 16 15 1.5 -2.4 29.39 28 39 252 325 001 72 79 85 0 -1 -2 000 112 16 16 1.6 -2.2 29.41 27 37 255 328 -006 73 79 99 0 -1 -2 000 113 16 17 1.6 -2.0 29.41 24 32 264 337 -001 74 79105 0 -1 -2 000 114 16 18 1.7 -1.4 29.40 21 30 273 346 -002 77 82105 0 0 -2 000 115 16 19 1.6 -1.4 29.41 24 32 273 346 000 79 88106 0 -1 -2 000 116 16 20 1.4 -1.0 29.40 24 34 282 355 -001 82 94 81 0 -1 -3 000 117 16 21 1.4 -1.1 29.37 28 39 286 358 -004 82 92 65 0 -1 -2 000 118 16 22 1.6 -1.0 29.35 31 43 278 350 -005 81 91106 0 -1 -2 000 119 16 23 1.7 -1.3 29.35 32 44 270 342 000 79 88106 0 -1 -2 000 120 17 00 1.6 -1.1 29.36 31 42 265 337 -003 80 92106 0 -1 -2 002 * 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.