Heard Island site lat/lon = (-53.0000,72.6000) cell lat/lon = (-53.0015,72.5908) Forecast initialized at 2026-05-03/12 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 03 12 2.9 -0.9 29.92 19 23 258 330 000 72 77 85 1 0 -1 000 1 03 13 2.9 -1.0 29.96 18 23 253 325 001 72 79 83 1 0 -1 000 2 03 14 2.8 -1.1 29.97 17 21 248 321 006 72 79 77 1 0 -1 000 3 03 15 2.8 -1.3 29.99 15 19 236 308 008 71 77 75 1 0 -1 000 4 03 16 2.8 -1.8 30.00 11 16 224 296 003 69 74 75 1 0 -1 000 5 03 17 2.8 -2.3 30.03 8 12 226 299 004 66 73 69 1 0 -1 000 6 03 18 2.7 -2.6 30.03 6 8 222 295 005 66 73 65 1 0 -1 000 7 03 19 2.6 -2.8 30.03 5 6 205 278 006 66 73 63 0 0 -2 000 8 03 20 2.5 -2.9 30.05 2 3 178 250 002 66 73 60 0 0 -2 000 9 03 21 2.5 -2.7 30.03 2 3 95 167 001 67 72 61 0 0 -2 000 10 03 22 2.4 -2.8 30.03 4 6 81 153 000 67 72 65 0 0 -2 000 11 03 23 2.4 -2.7 30.03 6 8 88 160 -001 67 72 67 0 0 -2 000 12 04 00 2.4 -2.4 30.02 9 12 87 160 000 68 72 62 0 0 -1 000 13 04 01 2.5 -1.9 30.02 12 16 82 154 003 70 74 63 0 0 -1 000 14 04 02 2.6 -1.6 30.01 15 19 70 142 -001 71 76 68 0 0 -1 000 15 04 03 2.6 -1.2 30.00 17 22 64 137 000 73 79 81 0 0 -1 000 16 04 04 2.7 -1.0 29.98 18 25 60 133 000 74 80 93 0 0 -1 000 17 04 05 2.8 -1.0 29.98 20 27 60 132 004 73 78 98 1 0 -1 000 18 04 06 2.8 -1.1 29.95 22 30 63 136 006 73 77100 1 0 -1 000 19 04 07 2.8 -0.9 29.92 24 32 61 134 -002 74 80103 1 0 -1 000 20 04 08 2.6 -1.0 29.89 25 34 61 133 -001 75 82 90 0 0 -2 000 21 04 09 1.6 0.2 29.83 27 37 66 139 -004 90 93 92 0 -1 -2 013 22 04 10 1.3 0.5 29.77 28 41 73 145 -006 95 98 98 0 -1 -2 085 23 04 11 1.5 0.7 29.71 30 45 75 148 -004 95 99101 0 -1 -2 109 24 04 12 1.6 0.8 29.65 34 49 75 148 -006 94101101 0 -1 -2 137 25 04 13 1.8 0.9 29.59 37 53 75 147 -011 94101 99 0 -1 -1 138 26 04 14 2.3 1.0 29.52 37 52 73 146 -017 91100100 0 0 0 148 27 04 15 2.6 1.4 29.45 36 53 71 144 -010 91100100 1 0 0 191 28 04 16 3.3 1.9 29.36 38 53 67 140 -012 90 99100 1 0 0 313 29 04 17 3.7 2.6 29.27 34 49 63 136 -009 92100100 2 1 1 217 30 04 18 4.4 3.9 29.19 30 47 53 126 000 96100100 3 3 3 158 31 04 19 5.0 4.8 29.12 30 45 46 119 -001 99100100 4 4 5 139 32 04 20 5.3 5.1 29.06 25 37 42 115 000 100100 99 5 5 5 143 33 04 21 5.2 5.1 29.03 18 30 21 94 -007 100100 99 5 5 6 072 34 04 22 4.9 4.7 28.98 13 21 10 82 -005 100100 90 6 8 10 099 35 04 23 4.6 4.5 28.93 12 17 15 88 004 100 88 81 9 11 9 085 36 05 00 4.7 4.6 28.89 13 18 27 100 007 100 77 86 12 10 10 053 37 05 01 4.6 4.4 28.87 17 29 345 58 000 100 93100 7 8 9 004 38 05 02 5.2 5.1 28.84 16 33 348 60 001 100 99 92 8 8 8 000 39 05 03 5.1 5.0 28.81 20 36 333 46 011 100 98 95 6 6 6 000 40 05 04 4.6 4.5 28.79 21 34 342 55 002 99 88 91 4 4 4 005 41 05 05 4.3 3.8 28.75 21 31 345 58 -004 96 98 87 3 2 2 013 42 05 06 3.9 3.7 28.72 19 27 344 57 -005 100100 94 3 2 2 005 43 05 07 3.8 3.7 28.68 19 28 324 37 -005 100100100 3 2 2 081 44 05 08 3.2 2.7 28.69 26 36 266 339 001 97100100 1 1 0 016 45 05 09 3.3 2.1 28.71 29 41 276 349 000 91100102 1 0 0 001 46 05 10 3.4 1.1 28.74 30 41 280 353 -001 83 93104 1 0 0 005 47 05 11 3.2 0.7 28.77 29 41 281 354 -002 82 90104 1 0 0 005 48 05 12 3.4 0.7 28.77 27 37 290 3 000 81 89104 1 0 0 005 49 05 13 3.5 0.8 28.77 25 34 301 13 000 81 87104 2 0 0 006 50 05 14 3.3 0.9 28.74 23 30 310 23 001 82 90104 1 0 0 001 51 05 15 2.4 1.4 28.70 21 27 325 38 -005 93100103 0 0 -1 015 52 05 16 1.8 1.4 28.65 16 21 333 46 -006 97100102 0 0 -1 076 53 05 17 1.4 1.1 28.60 11 15 331 44 -009 98100103 0 0 -1 125 54 05 18 1.4 1.2 28.59 13 17 304 17 -002 98 99103 0 0 0 125 55 05 19 1.9 1.4 28.60 25 39 306 19 -004 97100104 0 0 -1 096 56 05 20 3.2 0.0 28.61 40 56 280 353 002 77 84 97 1 0 0 041 57 05 21 2.8 -0.0 28.66 40 57 291 3 004 80 87 98 1 0 -1 009 58 05 22 2.2 0.2 28.68 41 59 293 5 006 85 92 96 0 0 -1 005 59 05 23 3.3 -1.0 28.70 40 56 288 1 -001 70 76 95 1 0 -1 001 60 06 00 3.4 -1.4 28.74 39 54 288 0 -001 68 72 93 1 0 0 000 61 06 01 3.5 -1.7 28.76 38 52 290 3 007 66 69 83 2 0 0 000 62 06 02 3.4 -1.7 28.80 37 51 291 3 002 66 69 70 1 0 0 000 63 06 03 3.2 -1.6 28.81 36 49 296 8 007 67 71 70 1 0 -1 000 64 06 04 2.9 -0.7 28.82 35 47 299 12 004 75 81 84 1 0 -1 000 65 06 05 3.0 -0.8 28.83 34 47 296 9 001 74 80 90 1 0 -1 000 66 06 06 2.8 -0.6 28.86 35 48 297 10 000 76 82 85 1 0 -1 000 67 06 07 3.2 -1.1 28.86 33 45 295 8 002 71 73 75 1 0 -1 000 68 06 08 3.4 -1.1 28.86 33 46 294 7 001 69 74 80 1 0 0 000 69 06 09 3.4 -0.4 28.87 34 46 296 9 002 74 79 83 1 0 0 000 70 06 10 2.6 0.7 28.89 34 47 289 2 -011 87 94103 0 0 -1 019 71 06 11 2.4 1.4 28.91 29 38 274 346 004 93 99104 0 0 -1 106 72 06 12 2.5 0.9 28.94 21 27 266 338 002 88 93 95 0 0 -1 045 73 06 13 2.8 0.2 28.97 19 25 255 327 000 82 92 96 1 0 -1 000 74 06 14 2.2 0.3 28.99 20 26 237 310 002 86 89 97 0 0 -1 000 75 06 15 1.9 0.2 29.02 19 24 229 302 -001 88 92104 0 -1 -2 002 76 06 16 1.8 -0.0 29.06 18 23 224 296 000 87 91 98 0 -1 -2 009 77 06 17 1.5 0.0 29.10 17 22 219 291 -001 89 91103 0 -1 -2 008 78 06 18 1.5 -0.3 29.13 18 23 211 284 000 87 90 99 0 -1 -2 017 79 06 19 1.4 -0.4 29.16 19 24 207 280 000 87 91102 0 -1 -2 007 80 06 20 1.5 -0.9 29.19 18 23 205 277 000 82 90 98 0 -1 -2 007 81 06 21 1.3 -0.7 29.22 18 23 203 275 000 85 90100 0 -1 -2 003 82 06 22 1.0 -0.6 29.25 19 24 199 271 -001 88 91103 0 -2 -3 017 83 06 23 1.0 -1.4 29.29 20 26 195 268 000 83 90 99 0 -2 -3 016 84 07 00 1.0 -2.9 29.33 21 25 196 269 001 73 82 94 0 -2 -3 005 85 07 01 1.1 -4.2 29.36 19 22 201 273 000 64 72 75 0 -2 -3 000 86 07 02 1.3 -4.2 29.38 16 19 212 285 003 63 72 72 0 -2 -3 000 87 07 03 0.6 -2.2 29.41 15 18 233 305 002 80 88 98 -1 -2 -3 002 88 07 04 1.1 -2.2 29.42 17 23 243 316 002 76 84 90 0 -2 -3 012 89 07 05 0.9 -1.7 29.44 20 24 242 314 000 81 88 86 -1 -2 -3 002 90 07 06 1.8 -3.5 29.44 20 25 251 323 000 64 70 82 0 -1 -2 000 91 07 07 2.1 -4.3 29.44 20 24 253 325 001 58 63 69 0 -1 -2 000 92 07 08 1.9 -3.6 29.45 22 27 253 326 001 63 68 78 0 -1 -2 000 93 07 09 1.0 0.0 29.45 20 29 266 338 000 93 96106 0 -1 -2 023 94 07 10 2.2 -1.1 29.46 22 27 254 327 -001 77 85 86 0 -1 -2 014 95 07 11 2.2 -1.4 29.47 19 24 251 324 000 75 79 90 0 0 -2 000 96 07 12 1.6 0.3 29.47 19 26 260 332 000 91 88 98 0 -1 -2 013 97 07 13 2.4 -0.8 29.47 19 24 251 323 001 77 86 92 0 0 -1 003 98 07 14 1.6 0.3 29.48 19 27 256 329 001 91 90104 0 -1 -2 023 99 07 15 2.6 -2.0 29.48 18 23 251 323 000 68 76 63 0 0 -1 002 100 07 16 2.4 -1.3 29.48 16 19 269 342 000 75 83 80 0 0 -2 000 101 07 17 2.2 -0.8 29.47 15 18 276 349 000 79 85 95 0 0 -2 000 102 07 18 2.1 -0.2 29.46 14 16 282 354 000 84 92 96 0 -1 -2 000 103 07 19 1.7 0.4 29.45 13 16 284 357 000 91 86105 0 0 -1 003 104 07 20 1.5 0.7 29.45 11 15 292 5 000 94 93100 0 -1 -1 025 105 07 21 1.9 0.6 29.44 10 14 304 16 000 90 85 97 0 0 -1 007 106 07 22 1.9 1.1 29.43 11 13 302 14 000 95 94105 0 0 -1 014 107 07 23 1.9 0.6 29.43 11 14 284 357 000 91 87 96 0 0 -1 022 108 08 00 1.7 0.3 29.42 11 15 281 354 -001 90 86 94 0 0 -1 005 109 08 01 1.8 0.9 29.40 10 14 298 10 000 94 89 98 0 0 -1 014 110 08 02 2.4 0.9 29.39 10 12 307 20 000 89 88 94 0 0 -1 001 111 08 03 2.3 1.0 29.39 9 9 308 20 001 91 86 94 0 0 -1 000 112 08 04 2.0 1.1 29.39 7 7 299 12 000 94 78 90 0 0 -1 001 113 08 05 2.2 1.1 29.39 7 8 279 351 000 93 70 92 0 0 -1 000 114 08 06 2.8 1.2 29.38 9 14 266 338 000 89 82 95 1 0 -1 000 115 08 07 3.0 1.3 29.38 11 15 245 317 000 88 96 86 1 0 -1 000 116 08 08 2.9 1.0 29.38 12 14 234 307 001 86 83 82 1 0 0 000 117 08 09 2.9 1.1 29.37 11 13 244 316 000 87 91 89 1 0 -1 000 118 08 10 2.7 1.4 29.38 11 14 237 309 000 90 93 98 1 0 -1 000 119 08 11 2.7 0.3 29.39 11 14 215 287 000 83 77 86 1 0 -1 001 120 08 12 2.8 -0.3 29.39 11 14 215 287 000 78 70 78 1 0 -1 000 * 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.