Heard Island site lat/lon = (-53.0000,72.6000) cell lat/lon = (-53.0015,72.5908) Forecast initialized at 2026-05-02/12 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 02 12 3.5 0.1 29.49 31 33 282 355 000 76 81 91 2 0 0 000 1 02 13 3.4 -0.1 29.53 30 41 284 357 000 75 82 89 1 0 0 000 2 02 14 3.4 -0.3 29.53 30 41 282 354 000 74 80 86 1 0 0 000 3 02 15 3.4 -0.1 29.56 29 39 283 355 -001 76 82 85 1 0 -1 000 4 02 16 3.4 -0.5 29.57 28 38 280 352 000 73 78 81 1 0 0 000 5 02 17 3.4 -0.8 29.59 28 37 279 352 000 71 76 84 1 0 0 000 6 02 18 3.0 -0.2 29.61 28 38 279 352 000 78 85 95 1 0 -1 002 7 02 19 2.6 0.4 29.63 27 38 279 352 000 84 91100 0 0 -1 005 8 02 20 2.9 0.1 29.64 27 37 280 352 000 80 87 76 1 0 -1 000 9 02 21 2.9 -0.1 29.65 28 37 277 349 001 79 87 93 1 0 -1 000 10 02 22 2.3 0.6 29.66 26 37 280 353 000 88 92102 0 0 -1 010 11 02 23 3.0 0.0 29.67 28 39 284 357 002 79 86 82 1 0 -1 004 12 03 00 2.5 0.5 29.68 29 40 278 350 -010 86 92101 0 0 -1 010 13 03 01 2.9 0.5 29.72 28 39 275 347 000 83 91 77 1 0 -1 023 14 03 02 2.7 0.5 29.73 28 38 271 343 -005 84 94 99 0 0 -1 002 15 03 03 2.7 0.6 29.75 25 35 271 343 000 85 93 78 1 0 -1 012 16 03 04 2.8 0.5 29.77 24 32 264 336 002 83 93 82 1 0 -1 001 17 03 05 3.2 -1.6 29.79 24 32 264 336 000 68 71 73 1 0 -1 000 18 03 06 2.8 -1.1 29.82 25 33 262 335 000 73 79 87 1 0 -1 000 19 03 07 2.7 -0.7 29.85 25 34 264 337 001 76 82 81 1 0 -1 000 20 03 08 3.1 -1.6 29.87 24 32 259 332 002 68 72 74 1 0 -1 000 21 03 09 3.1 -1.6 29.88 23 30 259 332 001 68 72 64 1 0 -1 000 22 03 10 2.9 -0.7 29.90 22 29 260 333 000 75 82 84 1 0 -1 000 23 03 11 2.6 0.3 29.92 22 28 267 340 000 83 82 68 0 0 -1 000 24 03 12 3.1 -0.5 29.95 21 27 256 328 000 74 81 79 1 0 -1 000 25 03 13 3.0 -0.2 29.98 20 25 257 329 001 77 85 68 1 0 -1 000 26 03 14 2.9 0.2 30.01 19 25 253 326 009 81 86 78 1 0 -1 000 27 03 15 3.1 -0.2 30.03 18 23 241 314 003 76 83 86 1 0 -1 000 28 03 16 3.0 -0.8 30.04 15 19 232 304 001 74 78 83 1 0 -1 000 29 03 17 3.0 -0.9 30.06 12 16 228 300 002 73 78 66 1 0 -1 000 30 03 18 2.9 -0.9 30.08 9 13 232 304 003 74 81 61 1 0 -1 000 31 03 19 2.9 -0.8 30.09 5 8 244 316 002 75 82 66 1 0 -1 000 32 03 20 2.9 -0.6 30.10 3 5 248 321 005 76 84 69 1 0 -1 000 33 03 21 2.9 -0.4 30.12 2 3 303 16 002 78 84 69 1 0 -1 000 34 03 22 2.8 -0.3 30.10 1 2 16 89 004 79 84 67 1 0 -1 000 35 03 23 2.8 -0.3 30.10 3 5 59 132 000 79 82 68 1 0 -1 000 36 04 00 2.8 -0.7 30.10 6 8 59 131 -001 76 80 70 1 0 -1 000 37 04 01 2.8 -0.9 30.09 8 10 63 136 001 75 77 73 1 0 -1 000 38 04 02 2.8 -0.8 30.08 11 13 67 140 000 75 79 74 1 0 -1 000 39 04 03 2.8 -0.5 30.07 14 17 65 138 000 76 83 77 1 0 -1 000 40 04 04 2.9 -0.8 30.06 16 21 62 134 000 74 76 84 1 0 -1 000 41 04 05 2.9 -1.1 30.04 18 24 61 133 001 72 74 88 1 0 -1 000 42 04 06 2.9 -0.5 30.03 20 26 62 134 000 76 80 90 1 0 -1 000 43 04 07 2.9 -0.8 30.00 21 27 63 136 002 74 76 91 1 0 -1 000 44 04 08 3.0 -1.2 29.97 23 31 63 135 -004 71 76 87 1 0 -1 000 45 04 09 2.5 -0.5 29.94 25 33 61 134 -001 79 85105 0 0 -2 001 46 04 10 1.7 0.4 29.90 25 35 65 138 -005 91 95101 0 -1 -2 026 47 04 11 1.6 0.8 29.85 27 40 72 144 000 94 98100 0 -1 -1 073 48 04 12 1.9 0.8 29.78 31 44 73 145 001 92100101 0 0 -1 052 49 04 13 2.0 1.1 29.72 33 47 71 144 -004 94100101 0 0 -1 089 50 04 14 2.0 1.3 29.65 35 49 70 143 -011 95100100 0 0 -1 244 51 04 15 2.6 1.5 29.58 34 50 70 143 -032 92100100 0 0 0 322 52 04 16 3.1 2.0 29.50 35 51 66 139 -017 92100100 1 0 0 415 53 04 17 3.7 2.6 29.42 36 51 61 134 -005 92100100 2 1 1 295 54 04 18 4.2 3.3 29.34 35 50 55 128 001 94100100 3 2 3 196 55 04 19 4.9 4.5 29.27 30 45 50 123 000 97100100 4 4 4 239 56 04 20 5.5 5.3 29.21 26 45 40 112 -001 100100100 5 5 4 243 57 04 21 5.6 5.4 29.15 26 45 32 105 -005 100100100 5 5 5 162 58 04 22 5.6 5.4 29.08 24 42 30 102 -007 100100100 5 5 5 310 59 04 23 5.7 5.6 29.02 23 42 24 97 -009 99100100 5 5 6 168 60 05 00 5.7 5.6 28.97 23 40 11 84 002 99100100 6 6 6 069 61 05 01 5.5 5.4 28.95 23 35 350 63 000 99100 82 5 6 8 003 62 05 02 5.1 4.9 28.95 23 34 334 47 001 100100 95 5 7 7 000 63 05 03 5.1 5.0 28.95 21 34 329 41 005 100100100 6 8 8 000 64 05 04 5.5 5.3 28.94 20 34 332 44 000 99100100 7 8 8 006 65 05 05 5.3 5.2 28.93 18 32 334 47 -002 99 98 94 6 8 7 000 66 05 06 4.9 4.8 28.91 21 34 339 51 -003 100100 97 5 6 6 000 67 05 07 4.8 4.7 28.89 20 30 331 43 000 100100100 4 4 5 004 68 05 08 3.8 3.7 28.88 19 26 296 9 006 100100100 2 2 2 012 69 05 09 3.4 2.9 28.87 18 24 272 345 -002 97100 98 2 1 1 000 70 05 10 3.1 2.9 28.87 18 24 271 344 -001 98100100 1 1 0 000 71 05 11 3.3 2.4 28.89 21 28 275 348 -001 94100102 1 0 0 000 72 05 12 3.3 1.7 28.90 24 32 276 348 002 88 99 99 1 0 0 003 73 05 13 3.2 1.2 28.90 23 32 277 349 000 85 94103 1 0 0 003 74 05 14 3.4 1.3 28.88 21 28 287 0 001 85 91 99 1 0 0 001 75 05 15 3.7 1.4 28.87 20 28 299 12 002 84 88103 2 1 0 004 76 05 16 3.6 1.7 28.85 20 27 318 31 -006 86 92102 2 0 0 001 77 05 17 2.8 2.2 28.82 20 26 331 43 002 96100 98 1 0 0 070 78 05 18 2.3 1.8 28.76 22 30 352 65 -008 96100101 0 0 0 161 79 05 19 3.0 2.2 28.66 23 35 15 87 -007 94100100 1 0 0 089 80 05 20 4.3 3.8 28.59 24 39 0 72 -002 97100 99 3 4 4 226 81 05 21 6.1 6.0 28.54 25 43 325 38 003 99100100 6 6 5 004 82 05 22 5.5 5.3 28.54 30 47 313 25 -001 100100100 4 3 2 002 83 05 23 4.2 1.9 28.57 33 47 302 15 000 84 93103 2 1 0 004 84 06 00 4.0 0.7 28.58 34 48 303 16 005 77 85 97 2 1 0 000 85 06 01 3.7 -0.4 28.60 35 49 301 13 004 72 79 86 2 0 0 000 86 06 02 3.0 -0.3 28.61 36 51 301 14 008 77 81 66 1 0 -1 000 87 06 03 3.6 -1.6 28.63 36 49 305 17 007 66 70 79 2 0 0 000 88 06 04 3.3 -1.0 28.63 34 49 310 23 004 71 75 78 1 0 -1 000 89 06 05 3.7 -1.8 28.62 37 51 311 23 002 64 66 56 2 0 0 000 90 06 06 2.9 -0.9 28.62 38 53 310 22 001 74 82 95 1 0 -1 000 91 06 07 3.0 -0.2 28.60 39 56 316 28 005 77 85 95 1 0 -1 003 92 06 08 2.9 0.4 28.58 40 59 319 32 010 82 90 99 1 0 -1 002 93 06 09 3.0 0.5 28.55 41 61 316 28 006 82 88 97 1 0 -1 010 94 06 10 3.3 0.0 28.51 42 59 317 30 000 77 84 93 1 0 0 001 95 06 11 2.9 0.7 28.49 43 61 316 29 000 84 93104 1 0 -1 015 96 06 12 3.1 1.3 28.46 41 56 307 20 000 87 96102 1 0 0 026 97 06 13 3.2 1.4 28.52 33 43 258 330 000 88 97101 1 0 0 032 98 06 14 1.9 0.9 28.65 27 36 249 322 -001 93 95105 0 0 -1 025 99 06 15 1.9 1.0 28.72 25 34 251 323 -001 93 95105 0 0 -1 064 100 06 16 1.9 0.7 28.79 25 33 240 312 -001 92 94102 0 0 -2 044 101 06 17 2.0 -0.0 28.85 25 33 231 303 000 85 91 99 0 -1 -2 017 102 06 18 2.0 -0.3 28.90 24 32 232 305 -001 83 91 98 0 -1 -2 002 103 06 19 1.8 -0.4 28.95 23 31 231 303 -002 83 91 97 0 -1 -2 003 104 06 20 1.6 -0.6 28.99 23 30 229 301 000 84 91 96 0 -1 -2 002 105 06 21 1.4 -0.5 29.03 23 31 231 304 000 86 93 97 0 -1 -2 007 106 06 22 1.2 -1.5 29.07 25 33 223 296 000 81 88 96 0 -2 -3 006 107 06 23 0.9 -2.2 29.11 25 32 222 294 000 78 85 92 -1 -2 -3 004 108 07 00 1.0 -2.4 29.14 23 29 223 296 001 76 85 92 -1 -2 -3 002 109 07 01 0.5 -2.7 29.18 26 34 226 299 000 77 86 94 -1 -3 -4 014 110 07 02 0.8 -4.7 29.21 24 29 227 299 000 63 69 77 -1 -2 -4 001 111 07 03 0.3 -3.8 29.25 22 26 229 302 001 71 81 86 -1 -3 -4 000 112 07 04 0.1 -2.4 29.28 21 25 232 305 000 82 94 99 -1 -3 -4 009 113 07 05 0.4 -4.3 29.31 25 32 225 298 000 67 74 88 -1 -3 -4 026 114 07 06 0.9 -6.0 29.33 23 26 225 298 000 55 60 62 -1 -2 -3 000 115 07 07 0.7 -5.6 29.35 18 23 231 304 001 59 67 86 -1 -2 -4 000 116 07 08 -0.2 -2.6 29.36 13 18 258 331 000 84 96107 -2 -3 -4 015 117 07 09 1.3 -0.7 29.35 19 27 272 344 001 85 92 95 0 -1 -2 072 118 07 10 2.1 -3.4 29.36 26 31 235 307 001 63 69 72 0 -1 -2 000 119 07 11 1.1 -1.1 29.39 19 24 242 314 000 84 86105 0 -2 -3 004 120 07 12 1.5 -1.5 29.40 18 25 246 319 000 79 83 94 0 -1 -2 015 * 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.