Halley site lat/lon = (-75.5560,-25.6200) cell lat/lon = (-75.5669,-25.5697) Forecast initialized at 2025-12-07/00 UTC MPAS cell scale: 5.5 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 07 00 -12.0 -14.9 29.51 1 1 47 21 000 75 63 57 -6 -6 -6 000 1 07 01 -12.7 -13.2 29.51 2 2 46 20 000 107 70 64 -6 -6 -6 000 2 07 02 -15.4 -15.6 29.51 3 3 74 49 000 115 75 69 -6 -6 -6 000 3 07 03 -18.4 -19.2 29.52 4 5 61 36 000 119 83 74 -7 -6 -6 000 4 07 04 -19.3 -19.9 29.53 4 6 63 38 000 120 92 82 -7 -6 -6 000 5 07 05 -20.2 -20.5 29.54 3 7 88 62 000 121 95 94 -7 -6 -6 000 6 07 06 -19.5 -19.8 29.54 4 10 101 75 000 121 98105 -8 -6 -6 000 7 07 07 -17.1 -18.1 29.54 4 11 93 67 000 108 96110 -8 -7 -7 000 8 07 08 -13.4 -14.7 29.56 6 12 86 60 000 103 87110 -8 -7 -7 000 9 07 09 -11.7 -12.8 29.56 8 11 81 55 000 102 82110 -8 -7 -7 000 10 07 10 -10.1 -11.2 29.55 9 11 79 54 000 100 78110 -8 -7 -7 000 11 07 11 -9.0 -10.2 29.55 9 13 78 52 000 99 79103 -8 -7 -7 000 12 07 12 -7.8 -9.2 29.54 10 13 75 50 000 95 81101 -8 -7 -6 001 13 07 13 -7.1 -8.6 29.55 10 13 70 45 000 94 82105 -8 -7 -6 002 14 07 14 -6.4 -8.0 29.56 10 12 68 43 000 92 78107 -7 -7 -6 000 15 07 15 -5.8 -7.6 29.57 9 11 71 45 000 91 78109 -7 -7 -7 001 16 07 16 -5.6 -7.2 29.57 9 10 76 50 000 92 85108 -7 -6 -6 006 17 07 17 -5.8 -7.3 29.57 10 11 80 55 000 93 89109 -7 -6 -6 008 18 07 18 -5.8 -7.1 29.58 10 12 77 51 -001 94 91107 -7 -6 -6 001 19 07 19 -5.6 -6.8 29.57 10 13 73 47 000 95 91109 -7 -6 -6 001 20 07 20 -5.5 -6.7 29.57 10 13 69 43 000 95 90109 -7 -6 -6 002 21 07 21 -5.5 -6.6 29.56 11 14 68 43 000 97 94107 -6 -6 -6 004 22 07 22 -5.7 -6.6 29.55 11 15 70 45 000 97 94109 -6 -6 -6 011 23 07 23 -5.9 -6.8 29.56 12 16 75 49 000 98 95109 -6 -6 -6 016 24 08 00 -6.2 -7.1 29.56 13 17 77 51 000 98 96109 -7 -6 -7 022 25 08 01 -6.4 -7.4 29.57 13 18 75 50 000 98 98109 -7 -7 -7 031 26 08 02 -6.8 -7.8 29.57 14 19 75 49 -001 98 97109 -8 -7 -6 018 27 08 03 -7.1 -8.1 29.56 14 19 73 48 000 98 95109 -8 -7 -6 002 28 08 04 -7.1 -8.1 29.56 14 19 74 48 -001 98100109 -8 -8 -7 005 29 08 05 -7.1 -8.2 29.55 14 19 78 53 -001 98106109 -8 -9 -7 006 30 08 06 -7.2 -8.6 29.56 14 20 75 50 000 95101110 -8 -9 -7 008 31 08 07 -7.7 -9.1 29.56 15 20 72 47 -001 95 99110 -9-10 -7 008 32 08 08 -7.8 -9.2 29.56 14 19 72 47 000 96 97110 -9 -9 -8 008 33 08 09 -7.7 -9.0 29.56 14 19 71 45 000 96 93110 -9 -8 -9 018 34 08 10 -7.8 -9.0 29.55 14 18 70 44 000 98 91110 -9 -8 -9 017 35 08 11 -7.5 -8.7 29.55 14 17 71 45 000 97 89101 -9 -8 -8 002 36 08 12 -7.1 -8.2 29.54 13 16 68 43 000 97 89102 -9 -8 -8 000 37 08 13 -6.5 -7.7 29.54 12 15 67 41 000 96 96107 -8 -8 -8 002 38 08 14 -6.0 -7.3 29.53 11 13 67 41 000 94109109 -7 -9 -8 015 39 08 15 -5.7 -7.0 29.53 10 12 69 43 000 93108110 -7 -8 -8 008 40 08 16 -5.2 -6.7 29.53 10 11 70 44 000 92108101 -7 -8 -8 008 41 08 17 -4.9 -6.4 29.52 10 11 72 46 000 91108100 -6 -8 -8 001 42 08 18 -4.8 -6.3 29.51 10 11 74 49 -001 91107105 -6 -7 -8 001 43 08 19 -4.7 -6.3 29.51 9 11 76 50 000 91107108 -6 -7 -8 001 44 08 20 -4.8 -6.2 29.50 9 12 76 51 -001 92103100 -6 -7 -8 001 45 08 21 -5.3 -6.6 29.50 10 13 80 54 -001 93103100 -6 -7 -7 000 46 08 22 -5.8 -7.0 29.49 10 14 79 54 -002 95101110 -7 -7 -7 002 47 08 23 -6.0 -7.0 29.49 10 14 71 45 -001 96103110 -7 -7 -7 022 48 09 00 -6.5 -7.6 29.48 9 13 72 46 000 97102 95 -7 -6 -7 006 49 09 01 -8.3 -8.8 29.48 7 14 79 53 000 105102105 -7 -7 -7 000 50 09 02 -7.6 -8.0 29.48 6 14 85 60 -001 105104 87 -7 -7 -7 000 51 09 03 -6.9 -7.6 29.47 7 12 83 57 000 101106 79 -6 -7 -8 000 52 09 04 -6.5 -7.3 29.46 7 10 68 43 -001 100107 83 -6 -7 -8 000 53 09 05 -6.3 -7.0 29.45 6 8 61 35 001 101106 77 -6 -7 -8 000 54 09 06 -6.6 -7.1 29.44 5 6 55 29 000 103104 88 -6 -7 -8 000 55 09 07 -6.0 -6.7 29.43 4 5 53 27 -001 101 92 98 -6 -7 -8 000 56 09 08 -5.3 -6.0 29.43 5 5 58 33 000 99 88 96 -6 -7 -8 002 57 09 09 -4.7 -5.7 29.42 5 5 53 28 -001 96 93 97 -6 -7 -8 001 58 09 10 -4.2 -5.9 29.41 5 6 54 29 -002 90 96110 -5 -7 -8 000 59 09 11 -3.9 -6.0 29.40 5 6 47 21 000 87102111 -5 -7 -8 002 60 09 12 -3.7 -5.9 29.39 4 6 36 11 000 85 99109 -5 -6 -8 006 61 09 13 -3.5 -6.1 29.38 4 5 20 354 000 82 95109 -5 -6 -7 003 62 09 14 -3.2 -6.2 29.38 6 7 8 343 000 79 94 99 -4 -6 -7 000 63 09 15 -3.2 -5.6 29.37 6 8 7 342 000 84100 94 -5 -6 -7 000 64 09 16 -3.2 -5.7 29.36 4 7 357 331 000 83 97 86 -4 -6 -7 000 65 09 17 -3.2 -6.0 29.35 2 5 12 347 000 81 96 78 -4 -6 -7 000 66 09 18 -3.1 -5.8 29.35 4 5 48 23 000 81 95 94 -4 -6 -7 000 67 09 19 -3.4 -5.3 29.35 3 4 49 23 000 87 98 98 -4 -6 -7 000 68 09 20 -4.4 -5.5 29.34 3 4 40 14 -001 93 99 87 -4 -6 -7 000 69 09 21 -5.5 -6.0 29.33 3 3 39 14 000 100 96 84 -4 -6 -7 000 70 09 22 -7.0 -7.3 29.33 5 5 50 24 000 106 94 89 -4 -6 -7 000 71 09 23 -9.3 -9.5 29.33 5 5 56 30 000 109 92 86 -5 -6 -7 000 72 10 00 -11.0 -11.2 29.33 4 5 61 36 001 111 93 72 -5 -6 -6 000 73 10 01 -11.6 -11.8 29.32 3 4 106 80 000 112 89 67 -5 -6 -6 000 74 10 02 -10.3 -10.4 29.32 4 5 84 58 -001 110 81 63 -5 -5 -6 000 75 10 03 -9.6 -9.7 29.32 4 5 56 31 000 109 80 67 -5 -5 -6 000 76 10 04 -9.6 -9.7 29.32 5 5 74 49 001 109 90 65 -8 -6 -7 000 77 10 05 -8.9 -9.0 29.32 5 6 36 10 000 109 91 70 -6 -6 -7 000 78 10 06 -8.4 -8.4 29.31 4 4 13 348 000 108 84 72 -6 -6 -7 000 79 10 07 -8.2 -8.3 29.30 2 3 343 317 002 108 78 78 -7 -6 -7 000 80 10 08 -8.2 -8.2 29.30 1 3 323 297 000 108 83 83 -7 -6 -7 000 81 10 09 -7.7 -7.7 29.31 2 2 23 357 000 108 89 89 -9 -7 -8 000 82 10 10 -7.2 -7.2 29.31 2 2 350 325 -001 107 83 94 -8 -7 -8 000 83 10 11 -6.4 -6.4 29.31 2 3 311 285 000 106 70 94 -7 -7 -8 000 84 10 12 -5.5 -6.1 29.30 1 2 266 241 001 100 64 91 -7 -7 -8 000 85 10 13 -4.9 -6.5 29.30 1 2 283 258 001 91 62 84 -6 -7 -8 000 86 10 14 -4.5 -6.9 29.30 1 4 35 10 001 86 70 80 -6 -7 -8 000 87 10 15 -4.2 -7.1 29.31 4 6 47 21 001 81 87 88 -5 -7 -8 000 88 10 16 -3.8 -7.2 29.31 6 8 58 33 000 76 90 85 -5 -6 -8 000 89 10 17 -3.8 -7.8 29.31 7 8 45 20 000 72 84 83 -5 -6 -8 000 90 10 18 -4.1 -8.0 29.32 5 7 33 8 000 73 85 91 -5 -7 -8 001 91 10 19 -4.5 -7.5 29.32 3 6 48 23 000 76 77 88 -5 -7 -8 000 92 10 20 -5.0 -8.1 29.32 2 5 64 38 000 80 76 77 -5 -7 -8 000 93 10 21 -5.7 -8.5 29.33 1 5 106 80 000 83 89 73 -5 -7 -8 000 94 10 22 -6.7 -8.6 29.33 2 5 155 130 000 90 98 79 -5 -7 -8 000 95 10 23 -8.0 -8.5 29.33 4 5 148 123 001 104 97 90 -5 -7 -8 000 96 11 00 -8.2 -8.3 29.33 4 6 142 116 000 107 85108 -5 -7 -8 000 97 11 01 -8.7 -9.0 29.34 3 4 152 127 000 108 82 96 -6 -6 -8 000 98 11 02 -8.6 -9.0 29.33 3 4 160 135 000 108 97 74 -6 -7 -8 000 99 11 03 -9.2 -9.3 29.34 2 3 180 155 000 109 99 91 -6 -7 -8 000 100 11 04 -8.7 -9.4 29.34 2 6 158 132 -001 103 92 99 -6 -6 -8 002 101 11 05 -8.2 -9.7 29.35 4 7 124 98 000 95 95108 -6 -6 -8 003 102 11 06 -7.8 -9.5 29.35 4 7 87 61 000 93 96108 -5 -6 -8 004 103 11 07 -7.6 -9.2 29.36 3 5 97 71 000 94 97105 -6 -7 -8 004 104 11 08 -7.9 -9.7 29.37 2 3 108 83 000 92 89100 -6 -7 -8 001 105 11 09 -7.2 -9.0 29.38 3 5 103 78 000 92 90100 -6 -7 -8 002 106 11 10 -5.9 -7.4 29.39 4 8 82 56 000 94 99105 -6 -7 -8 006 107 11 11 -4.7 -5.9 29.39 3 6 73 47 001 95100106 -6 -7 -8 021 108 11 12 -4.0 -5.6 29.40 6 7 45 20 -001 91107109 -5 -7 -8 038 109 11 13 -4.2 -5.6 29.41 9 10 46 21 000 92107 82 -6 -7 -8 000 110 11 14 -4.1 -5.5 29.42 9 12 50 25 000 92 94 77 -5 -6 -7 000 111 11 15 -4.1 -5.6 29.43 9 11 43 17 000 92 70 68 -5 -6 -7 000 112 11 16 -4.0 -5.4 29.43 7 10 43 17 000 92 69 69 -5 -6 -7 000 113 11 17 -3.9 -5.4 29.44 5 8 48 23 000 91 60 66 -5 -6 -7 000 114 11 18 -3.8 -5.5 29.44 3 5 50 24 000 90 50 76 -5 -5 -6 000 115 11 19 -3.5 -5.4 29.45 1 6 70 45 000 88 82101 -4 -5 -7 000 116 11 20 -3.3 -5.3 29.45 0 7 180 154 000 87103107 -4 -5 -7 001 117 11 21 -3.1 -4.8 29.45 2 7 183 158 000 89103103 -4 -5 -6 000 118 11 22 -3.0 -4.1 29.46 6 11 69 43 000 93 97103 -4 -5 -6 009 119 11 23 -5.3 -5.6 29.46 6 12 100 75 000 103 88107 -4 -5 -6 003 120 12 00 -7.8 -8.0 29.46 6 14 112 87 000 107 96102 -4 -5 -6 000 * 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.