Halley site lat/lon = (-75.5560,-25.6200) cell lat/lon = (-75.5669,-25.5697) Forecast initialized at 2026-01-12/00 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 12 00 -8.6 -11.1 28.96 6 7 219 194 000 78 51 37 -4 -3 -4 000 1 12 01 -12.9 -13.4 28.98 6 7 194 168 000 112 45 38 -5 -4 -4 000 2 12 02 -14.9 -15.3 29.00 3 5 168 143 000 114 39 40 -5 -4 -4 000 3 12 03 -16.2 -16.7 29.01 6 8 121 95 000 116 38 41 -6 -5 -5 000 4 12 04 -17.3 -17.6 29.05 8 20 96 71 001 118 68 42 -9 -7 -6 000 5 12 05 -16.9 -17.3 29.06 7 20 83 57 002 117 77 43 -9 -8 -7 000 6 12 06 -16.9 -17.3 29.06 5 17 88 62 001 117 64 44 -9 -9 -8 000 7 12 07 -16.4 -16.9 29.06 4 16 95 69 001 115 47 44 -9 -9 -8 000 8 12 08 -14.9 -17.0 29.08 4 16 83 57 000 96 43 43 -9 -9 -8 000 9 12 09 -13.3 -16.3 29.10 4 14 79 53 000 87 43 42 -9 -8 -8 000 10 12 10 -11.9 -15.3 29.09 7 14 77 52 000 82 45 41 -9 -8 -7 000 11 12 11 -10.9 -14.5 29.10 8 15 85 59 000 79 45 40 -9 -8 -7 000 12 12 12 -10.1 -13.7 29.11 8 14 92 67 000 79 47 38 -9 -8 -8 000 13 12 13 -9.4 -12.9 29.10 8 14 96 70 000 80 46 38 -9 -8 -7 000 14 12 14 -8.6 -12.1 29.11 6 11 92 67 000 80 47 39 -8 -7 -8 000 15 12 15 -8.0 -11.4 29.12 6 13 96 70 000 79 52 38 -8 -7 -8 000 16 12 16 -7.6 -10.9 29.12 6 12 99 73 001 80 67 36 -8 -7 -7 000 17 12 17 -7.4 -10.1 29.12 7 11 102 76 000 84 72 35 -8 -7 -7 000 18 12 18 -7.7 -9.7 29.13 8 11 96 70 000 91 67 34 -9 -8 -7 000 19 12 19 -8.5 -10.6 29.13 7 9 87 61 000 89 59 34 -9 -7 -7 000 20 12 20 -9.2 -11.1 29.12 5 8 86 61 000 92 58 34 -8 -7 -7 000 21 12 21 -10.3 -11.5 29.12 5 10 94 68 000 99 52 35 -8 -7 -7 000 22 12 22 -11.0 -11.4 29.12 6 10 94 68 000 110 47 36 -7 -6 -7 000 23 12 23 -12.3 -12.7 29.11 5 11 93 68 000 112 49 37 -7 -6 -7 000 24 13 00 -13.7 -14.0 29.12 4 11 102 76 000 114 54 37 -7 -7 -7 000 25 13 01 -15.2 -15.5 29.12 5 13 109 84 000 115 60 38 -8 -7 -7 000 26 13 02 -16.0 -16.3 29.12 5 13 103 77 000 116 60 39 -8 -7 -7 000 27 13 03 -15.9 -16.2 29.11 5 12 87 62 000 116 62 41 -8 -7 -7 000 28 13 04 -13.4 -13.7 29.10 8 14 75 50 000 113 65 43 -9 -7 -7 000 29 13 05 -11.4 -11.6 29.09 10 16 75 49 000 111 69 44 -9 -8 -8 000 30 13 06 -11.7 -11.9 29.09 9 15 78 52 000 112 75 44 -9 -8 -8 000 31 13 07 -12.5 -13.3 29.09 9 16 84 59 000 107 76 43 -9 -8 -8 000 32 13 08 -12.4 -13.4 29.08 10 17 79 54 000 104 82 42 -9 -8 -8 000 33 13 09 -10.6 -12.4 29.08 10 17 76 50 000 95 81 42 -9 -8 -8 000 34 13 10 -9.7 -11.9 29.06 11 16 79 54 000 90 76 43 -9 -8 -8 000 35 13 11 -9.3 -11.0 29.05 10 13 81 55 000 94 85 44 -8 -8 -8 000 36 13 12 -9.0 -10.2 29.04 8 10 76 50 000 98 86 44 -8 -8 -7 000 37 13 13 -8.5 -9.6 29.04 7 8 74 49 000 99 84 45 -8 -8 -7 000 38 13 14 -7.9 -9.3 29.03 7 9 78 53 000 96 82 44 -8 -7 -7 000 39 13 15 -7.7 -9.0 29.02 7 8 78 52 000 96 81 45 -8 -7 -7 000 40 13 16 -7.4 -8.6 29.01 7 8 77 52 000 97 80 45 -8 -7 -7 000 41 13 17 -7.2 -8.4 29.01 7 8 77 52 000 97 78 44 -8 -7 -7 000 42 13 18 -7.2 -8.2 29.00 7 8 79 54 000 98 75 43 -8 -7 -7 000 43 13 19 -7.3 -8.1 28.99 7 8 78 53 000 100 69 43 -8 -7 -7 000 44 13 20 -7.6 -8.2 28.98 7 9 75 49 000 102 61 43 -9 -7 -7 000 45 13 21 -7.9 -8.4 28.98 8 9 74 49 000 104 54 43 -9 -7 -7 000 46 13 22 -8.4 -8.7 28.98 8 9 77 51 000 108 51 43 -9 -6 -7 000 47 13 23 -8.9 -9.0 28.97 8 10 80 55 000 109 51 42 -10 -6 -7 000 48 14 00 -8.8 -9.0 28.97 9 12 84 58 001 109 54 43 -10 -6 -7 000 49 14 01 -8.8 -8.9 28.97 10 13 84 58 000 108 58105 -10 -6 -7 000 50 14 02 -8.6 -8.7 28.96 11 15 85 59 -001 108 69109 -9 -6 -7 000 51 14 03 -8.3 -9.0 28.96 11 15 82 57 000 102106109 -9 -7 -7 002 52 14 04 -8.3 -9.5 28.96 13 17 82 56 000 99103109 -9 -7 -7 014 53 14 05 -9.0 -10.0 28.96 13 18 82 57 000 100103109 -9 -7 -7 020 54 14 06 -8.6 -9.6 28.95 13 18 84 58 001 100101109 -9 -7 -7 022 55 14 07 -8.2 -9.1 28.95 13 18 83 57 000 101102110 -9 -7 -7 016 56 14 08 -7.8 -8.4 28.95 13 17 82 56 -002 102102110 -9 -7 -7 011 57 14 09 -6.9 -7.5 28.95 12 15 81 55 000 103103105 -8 -7 -7 008 58 14 10 -6.2 -7.1 28.95 12 15 79 54 000 98107 95 -7 -8 -8 004 59 14 11 -5.7 -6.9 28.95 11 14 76 51 001 95102 67 -7 -8 -9 000 60 14 12 -5.3 -6.8 28.95 11 13 73 48 000 93103 57 -7 -8 -8 000 61 14 13 -5.1 -6.7 28.95 11 12 75 50 000 92108 61 -6 -8 -8 000 62 14 14 -4.9 -6.8 28.95 11 12 79 54 000 89106 69 -6 -8 -8 000 63 14 15 -4.8 -6.6 28.94 11 13 82 56 000 89107 88 -6 -8 -8 000 64 14 16 -4.3 -6.0 28.94 11 13 79 54 000 90107 94 -6 -7 -8 000 65 14 17 -3.7 -5.5 28.93 11 13 76 51 000 87105 97 -5 -6 -8 001 66 14 18 -3.5 -5.4 28.94 11 13 77 52 000 87104 98 -5 -6 -7 001 67 14 19 -3.4 -5.3 28.94 11 14 82 56 000 87103 98 -4 -6 -7 000 68 14 20 -3.3 -4.7 28.94 11 15 88 62 -001 91103110 -4 -6 -7 001 69 14 21 -3.3 -4.4 28.94 13 17 84 59 -001 93104110 -4 -5 -6 005 70 14 22 -4.0 -5.0 28.95 11 17 77 52 000 95 99103 -4 -6 -7 004 71 14 23 -4.6 -5.2 28.95 11 20 88 62 -001 99 97104 -5 -6 -7 007 72 15 00 -4.6 -5.4 28.95 12 21 89 63 -001 98100104 -5 -5 -6 012 73 15 01 -4.6 -5.5 28.95 14 23 87 61 -001 97102107 -5 -5 -6 018 74 15 02 -4.5 -5.4 28.95 15 23 81 55 -001 97106102 -5 -6 -6 021 75 15 03 -4.5 -5.4 28.96 15 22 81 56 000 97106 98 -5 -6 -6 010 76 15 04 -4.5 -5.3 28.96 15 23 81 55 000 97106104 -5 -5 -6 007 77 15 05 -4.6 -5.5 28.96 15 22 75 49 000 97106104 -5 -6 -7 003 78 15 06 -4.5 -5.5 28.97 17 23 75 49 000 95106105 -5 -6 -7 001 79 15 07 -4.6 -5.7 28.97 17 23 75 49 000 95105107 -5 -6 -7 004 80 15 08 -4.2 -5.3 28.98 18 25 73 48 000 94105108 -5 -6 -7 012 81 15 09 -3.7 -4.9 28.98 19 26 72 46 000 93106109 -5 -6 -7 018 82 15 10 -3.5 -4.8 28.99 20 27 75 50 000 92106109 -5 -6 -7 016 83 15 11 -3.4 -4.7 29.00 21 28 77 52 000 92106107 -5 -6 -7 019 84 15 12 -3.1 -4.4 29.01 22 28 76 50 -002 92106106 -4 -6 -7 027 85 15 13 -2.9 -4.2 29.02 21 27 75 49 000 91105108 -4 -6 -7 034 86 15 14 -2.6 -3.9 29.02 20 27 73 47 -001 91104108 -4 -5 -6 022 87 15 15 -2.2 -3.8 29.03 19 25 68 42 -001 89102107 -3 -5 -6 020 88 15 16 -2.0 -3.5 29.03 18 24 65 40 001 88101105 -3 -5 -6 010 89 15 17 -2.0 -3.5 29.04 18 23 68 42 000 89101108 -3 -5 -6 008 90 15 18 -2.0 -3.5 29.05 17 23 68 42 002 89100108 -3 -4 -6 012 91 15 19 -2.0 -3.4 29.05 18 24 70 44 001 90101108 -3 -4 -5 015 92 15 20 -2.2 -3.5 29.06 18 24 70 44 -002 90101108 -3 -4 -5 013 93 15 21 -2.6 -3.6 29.07 16 23 74 49 -002 93102108 -3 -4 -5 005 94 15 22 -2.7 -3.7 29.08 15 22 77 51 000 94103108 -3 -4 -5 008 95 15 23 -3.0 -4.1 29.09 15 24 77 51 000 93100108 -4 -4 -5 011 96 16 00 -3.2 -4.2 29.10 16 23 76 51 000 94105 94 -4 -5 -5 013 97 16 01 -3.5 -4.6 29.10 14 20 77 51 000 94102103 -4 -4 -5 002 98 16 02 -4.2 -5.2 29.10 13 20 80 54 000 96104101 -4 -4 -5 010 99 16 03 -3.8 -4.5 29.11 11 15 66 41 000 98101 96 -4 -5 -5 009 100 16 04 -4.1 -4.3 29.11 10 18 56 30 000 102102 95 -5 -4 -5 004 101 16 05 -3.6 -4.1 29.11 8 16 70 45 -001 100104101 -4 -5 -5 007 102 16 06 -3.9 -4.1 29.12 12 18 61 36 002 102 98102 -5 -4 -5 004 103 16 07 -4.5 -4.6 29.12 12 19 68 42 000 104 97103 -5 -4 -5 001 104 16 08 -4.2 -4.3 29.13 12 17 70 45 000 104101 93 -5 -5 -5 000 105 16 09 -4.0 -4.1 29.13 12 16 69 44 000 104 96 91 -5 -5 -5 000 106 16 10 -3.2 -3.7 29.13 11 14 69 44 000 99102 89 -4 -5 -6 000 107 16 11 -2.6 -3.6 29.13 11 14 71 46 000 94105 90 -4 -5 -6 000 108 16 12 -2.5 -3.5 29.12 11 13 73 47 001 93105 88 -4 -5 -5 001 109 16 13 -2.5 -3.6 29.12 9 12 75 50 002 93 90 90 -4 -4 -5 000 110 16 14 -2.1 -3.3 29.11 8 11 75 50 000 91 92 75 -3 -4 -5 000 111 16 15 -1.5 -3.3 29.10 7 10 84 59 002 87 89 85 -3 -4 -5 000 112 16 16 -1.8 -3.6 29.09 7 10 92 67 -001 86 68 78 -3 -3 -5 000 113 16 17 -1.8 -3.8 29.08 7 10 111 85 001 84 68 71 -3 -4 -4 000 114 16 18 -2.0 -4.2 29.07 7 12 103 78 000 83 75 59 -3 -4 -4 000 115 16 19 -2.6 -3.8 29.07 7 13 94 68 000 92 87 73 -3 -4 -5 000 116 16 20 -3.0 -3.8 29.07 7 12 73 47 000 95 90 88 -3 -4 -6 000 117 16 21 -5.1 -6.4 29.07 5 12 71 46 000 92 83 76 -3 -5 -6 000 118 16 22 -6.8 -7.1 29.06 6 12 111 85 000 105 75 82 -4 -5 -5 000 119 16 23 -9.0 -9.2 29.06 5 12 126 101 000 109 81 86 -4 -5 -5 000 120 17 00 -10.5 -10.7 29.05 5 13 134 109 003 110 81 87 -4 -5 -5 000 * 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.