Halley site lat/lon = (-75.5560,-25.6200) cell lat/lon = (-75.5669,-25.5697) Forecast initialized at 2025-09-28/12 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 28 12 -31.0 -35.7 29.23 1 2 78 52 000 70 54 27 -24-19-18 000 1 28 13 -29.1 -34.9 29.24 1 1 122 96 000 73 48 19 -23-19-18 000 2 28 14 -29.4 -35.0 29.25 1 1 25 0 001 75 44 17 -23-19-18 000 3 28 15 -29.7 -34.9 29.26 2 2 43 18 001 78 40 18 -22-19-18 000 4 28 16 -30.1 -35.1 29.26 0 1 317 291 001 80 33 19 -22-18-18 000 5 28 17 -30.8 -35.2 29.30 3 3 247 221 000 86 32 28 -21-18-17 000 6 28 18 -31.8 -34.5 29.31 3 3 244 218 001 103 34 26 -22-19-18 000 7 28 19 -33.0 -34.6 29.29 1 1 332 307 000 117 33 27 -21-19-18 000 8 28 20 -34.4 -35.5 29.29 3 3 4 338 -001 124 35 29 -21-18-18 000 9 28 21 -36.0 -37.2 29.33 4 5 49 23 -001 126 41 30 -22-19-18 000 10 28 22 -38.6 -40.5 29.33 6 8 67 41 000 124 49 30 -23-18-18 000 11 28 23 -40.4 -42.5 29.35 6 9 70 45 001 124 47 30 -24-19-18 000 12 29 00 -41.1 -43.0 29.36 3 8 71 45 001 123 47 29 -24-20-19 000 13 29 01 -41.8 -43.7 29.37 3 5 134 108 002 124 49 30 -26-21-19 000 14 29 02 -40.0 -41.8 29.38 4 4 115 89 002 124 48 30 -26-22-19 000 15 29 03 -39.8 -41.7 29.39 5 5 114 88 000 124 54 30 -26-23-20 000 16 29 04 -39.8 -41.8 29.40 6 7 103 77 000 124 71 41 -26-23-21 000 17 29 05 -40.1 -42.3 29.40 6 9 96 70 001 124 89 44 -25-23-21 000 18 29 06 -40.8 -43.0 29.39 6 10 82 56 001 124 90 39 -25-23-22 000 19 29 07 -41.2 -43.4 29.39 5 10 76 50 002 124 87 31 -25-24-23 000 20 29 08 -41.9 -44.2 29.39 3 9 93 67 002 121 86 29 -26-24-24 000 21 29 09 -41.6 -44.0 29.38 4 9 101 75 000 124 92 23 -26-25-24 000 22 29 10 -40.9 -42.9 29.37 3 8 100 74 001 122 94 24 -26-25-24 000 23 29 11 -40.3 -43.3 29.37 3 7 111 86 002 108 94 28 -26-25-24 000 24 29 12 -38.8 -42.2 29.36 4 8 115 90 002 102 93 23 -26-25-24 000 25 29 13 -36.8 -40.0 29.36 4 10 115 89 002 102 79 20 -27-25-24 000 26 29 14 -35.1 -38.2 29.36 3 10 108 82 005 103 65 20 -26-24-24 000 27 29 15 -34.3 -37.5 29.35 3 9 108 82 006 101 59 21 -26-24-24 000 28 29 16 -34.5 -37.7 29.33 4 9 111 86 005 101 52 18 -26-24-24 000 29 29 17 -35.2 -37.9 29.32 4 9 105 79 007 110 49 17 -26-24-24 000 30 29 18 -36.2 -38.3 29.32 5 11 99 74 008 121 50 16 -26-24-23 000 31 29 19 -37.5 -39.5 29.31 5 11 98 72 007 124 52 14 -26-24-23 000 32 29 20 -39.1 -41.1 29.30 6 10 97 71 008 124 54 14 -26-24-23 000 33 29 21 -40.6 -42.7 29.29 6 9 99 74 006 124 58 14 -26-24-23 000 34 29 22 -41.6 -43.8 29.28 6 9 100 75 005 124 66 13 -26-24-23 000 35 29 23 -42.4 -44.7 29.28 6 10 98 73 006 124 76 13 -26-25-23 000 36 30 00 -42.9 -45.3 29.27 6 11 94 69 004 124 75 14 -27-25-23 000 37 30 01 -43.0 -45.4 29.26 5 11 91 65 005 124 64 13 -26-24-23 000 38 30 02 -43.0 -45.3 29.25 5 11 97 71 004 124 56 15 -26-24-23 000 39 30 03 -43.0 -45.3 29.23 5 10 107 81 005 124 56 15 -26-24-23 000 40 30 04 -43.8 -46.1 29.21 6 11 105 79 005 125 49 15 -26-24-24 000 41 30 05 -45.8 -48.3 29.21 5 14 87 61 006 124 45 16 -25-25-24 000 42 30 06 -47.8 -50.7 29.22 5 16 92 67 006 118 45 19 -26-25-25 000 43 30 07 -47.0 -50.3 29.23 5 16 69 43 002 113 48 20 -28-26-24 000 44 30 08 -45.3 -47.8 29.23 4 19 83 57 001 124 41 20 -28-25-24 000 45 30 09 -44.5 -47.0 29.22 5 16 83 57 004 124 40 21 -27-24-24 000 46 30 10 -41.7 -43.9 29.22 6 16 53 27 010 124 38 30 -27-24-24 000 47 30 11 -40.3 -42.6 29.22 4 10 87 61 002 124 55 35 -27-25-24 000 48 30 12 -40.6 -43.1 29.22 4 13 104 78 004 117 38 28 -27-24-24 000 49 30 13 -37.8 -40.6 29.22 7 20 94 68 -002 110 49 18 -27-26-26 000 50 30 14 -36.6 -39.2 29.22 7 18 110 84 001 111 58 17 -27-26-25 000 51 30 15 -35.7 -38.4 29.22 6 19 99 74 000 111 64 25 -27-26-25 000 52 30 16 -35.1 -37.6 29.23 7 18 83 57 -001 112 69 32 -26-26-25 000 53 30 17 -35.7 -37.6 29.24 6 13 88 62 000 123 72 34 -25-26-26 000 54 30 18 -36.2 -38.0 29.24 7 13 94 69 -001 124 69 39 -26-25-25 000 55 30 19 -37.1 -38.9 29.23 8 15 94 69 -001 124 66 33 -26-26-25 000 56 30 20 -38.2 -40.0 29.23 8 18 84 58 000 125 67 30 -26-26-25 000 57 30 21 -39.0 -40.9 29.23 8 24 78 53 000 125 66 45 -25-24-26 000 58 30 22 -39.0 -40.8 29.23 9 27 80 54 -001 127 60 55 -25-24-25 000 59 30 23 -39.1 -40.8 29.25 9 23 81 56 -001 128 69 64 -25-25-25 000 60 01 00 -39.0 -40.6 29.26 9 24 74 48 000 130 65 64 -25-25-25 000 61 01 01 -38.6 -40.1 29.26 9 26 74 48 -001 131 77 57 -26-25-25 000 62 01 02 -38.6 -40.1 29.27 10 26 81 55 000 131 85 53 -25-25-25 000 63 01 03 -39.0 -40.5 29.27 10 28 88 63 -001 132 95 50 -25-25-25 000 64 01 04 -35.9 -36.9 29.26 13 32 82 56 000 135103 49 -24-25-26 000 65 01 05 -32.2 -33.1 29.26 18 35 76 50 000 130 96 40 -24-25-26 000 66 01 06 -29.7 -31.4 29.26 21 36 78 52 000 116107 60 -24-25-25 001 67 01 07 -30.1 -31.7 29.28 20 37 77 51 000 118104 94 -24-24-24 001 68 01 08 -27.2 -29.7 29.28 20 36 78 53 -002 103101 83 -24-24-25 000 69 01 09 -25.2 -28.7 29.28 20 35 84 58 -001 91 82 71 -23-23-24 000 70 01 10 -24.4 -28.5 29.27 23 38 80 54 -001 84 75 91 -22-23-24 000 71 01 11 -23.1 -27.6 29.27 25 39 79 54 000 80 72109 -21-22-23 000 72 01 12 -21.0 -25.8 29.26 27 41 76 51 -001 76 76115 -21-22-23 000 73 01 13 -20.0 -24.8 29.26 27 42 75 50 -002 74 74108 -20-21-22 000 74 01 14 -18.9 -23.5 29.26 29 42 72 47 -003 76 85104 -20-21-22 000 75 01 15 -18.1 -22.5 29.26 29 41 70 45 -001 77 87109 -19-20-22 000 76 01 16 -17.7 -21.5 29.26 29 40 70 44 -002 83 93101 -18-20-21 005 77 01 17 -17.1 -20.7 29.26 27 40 69 44 -002 84 92105 -18-19-21 014 78 01 18 -16.7 -20.9 29.26 26 39 69 43 -001 77 82106 -17-18-20 000 79 01 19 -16.5 -20.8 29.25 27 41 69 44 -002 77 80 93 -17-18-20 000 80 01 20 -16.4 -20.7 29.25 25 41 70 44 -002 77 75 82 -16-18-19 000 81 01 21 -16.2 -20.8 29.25 28 42 67 42 -001 75 79102 -17-18-20 000 82 01 22 -16.3 -19.5 29.25 28 40 68 43 -001 86 95103 -17-18-20 008 83 01 23 -16.1 -18.8 29.25 28 41 71 45 000 91 99102 -17-18-19 024 84 02 00 -15.8 -18.4 29.26 29 42 71 46 -001 92100103 -16-18-19 026 85 02 01 -15.2 -17.8 29.25 29 42 72 46 -002 92100102 -16-17-18 026 86 02 02 -15.1 -17.6 29.25 29 42 70 44 -002 92101103 -16-17-18 025 87 02 03 -14.8 -17.3 29.24 29 43 70 44 -002 92101104 -15-17-18 024 88 02 04 -14.5 -17.1 29.24 29 42 70 44 -002 91101104 -15-16-18 021 89 02 05 -14.5 -17.0 29.24 29 42 69 44 -001 92101106 -15-16-18 020 90 02 06 -14.2 -16.7 29.24 28 41 71 45 000 92101106 -15-16-17 016 91 02 07 -14.3 -16.9 29.24 28 41 71 46 000 91101104 -15-16-17 011 92 02 08 -14.0 -16.6 29.24 28 41 71 45 001 91101106 -15-16-17 010 93 02 09 -13.8 -16.5 29.25 28 40 72 46 001 90100106 -14-16-17 011 94 02 10 -13.7 -16.6 29.25 27 39 72 47 001 87 97107 -14-16-17 007 95 02 11 -13.2 -16.5 29.25 26 39 73 48 001 83 88107 -14-15-16 002 96 02 12 -12.6 -16.3 29.25 25 38 73 47 001 79 78106 -13-14-16 000 97 02 13 -12.3 -15.9 29.24 24 37 74 49 001 80 76 89 -12-14-15 000 98 02 14 -12.0 -15.6 29.23 23 37 76 50 001 79 72 60 -12-13-15 000 99 02 15 -11.9 -15.4 29.21 21 36 77 51 002 80 70 35 -12-12-14 000 100 02 16 -12.0 -15.6 29.20 20 36 77 52 001 80 66 24 -11-12-13 000 101 02 17 -12.5 -16.1 29.18 19 35 79 53 001 80 62 36 -11-11-13 000 102 02 18 -13.5 -16.9 29.17 17 33 79 53 001 82 60 43 -10-11-12 000 103 02 19 -14.5 -17.4 29.16 15 32 79 54 000 88 59 58 -10-11-12 000 104 02 20 -14.8 -17.7 29.15 14 31 80 55 000 88 61 65 -10-11-12 000 105 02 21 -14.8 -17.9 29.14 14 28 80 55 000 86 61 77 -10-11-12 000 106 02 22 -14.5 -17.4 29.12 15 27 81 55 -002 87 73 88 -11-12-12 000 107 02 23 -14.1 -17.2 29.10 15 26 78 53 000 86 87 94 -12-12-13 002 108 03 00 -13.7 -15.7 29.08 15 26 79 53 -001 96 96104 -11-12-13 020 109 03 01 -13.8 -15.6 29.06 14 26 86 61 001 98 96105 -11-12-13 019 110 03 02 -14.2 -16.6 29.05 15 26 84 59 000 92 98106 -12-12-13 010 111 03 03 -14.6 -17.6 29.03 15 28 75 49 -002 86 93104 -12-12-13 003 112 03 04 -15.1 -18.3 29.01 14 25 77 51 -003 85 95100 -12-12-13 002 113 03 05 -15.4 -18.0 29.00 13 23 76 50 -002 91 89101 -11-12-13 003 114 03 06 -15.4 -18.4 28.98 12 21 74 49 002 88 92102 -11-12-13 004 115 03 07 -15.6 -18.4 28.97 10 19 70 44 000 90 98103 -12-12-13 006 116 03 08 -15.3 -17.9 28.96 9 19 74 48 -002 91 95103 -12-12-13 007 117 03 09 -14.9 -18.2 28.94 8 18 74 49 001 84 90104 -12-12-13 003 118 03 10 -15.1 -18.2 28.93 8 15 67 42 000 87 89106 -12-13-13 003 119 03 11 -15.1 -17.8 28.92 6 10 81 55 001 90 82106 -12-12-13 004 120 03 12 -14.2 -17.0 28.91 6 9 86 60 000 89 85105 -12-12-13 002 * 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.