Halley site lat/lon = (-75.5560,-25.6200) cell lat/lon = (-75.5669,-25.5697) Forecast initialized at 2026-01-29/12 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 29 12 -7.4 -12.1 28.97 4 5 223 197 000 60 27 18 -6 -5 -4 000 1 29 13 -6.5 -10.4 28.96 3 6 239 213 001 75 29 19 -5 -5 -4 000 2 29 14 -5.5 -9.3 28.95 3 8 242 216 000 75 31 18 -5 -4 -4 000 3 29 15 -4.5 -8.3 28.94 3 7 259 234 000 74 30 18 -5 -4 -4 000 4 29 16 -3.9 -6.9 28.94 3 7 276 251 001 76 35 19 -4 -4 -4 000 5 29 17 -3.8 -6.2 28.98 1 7 304 278 002 81 49 22 -4 -5 -5 000 6 29 18 -4.4 -6.4 28.96 2 6 13 347 000 86 66 22 -4 -5 -5 000 7 29 19 -5.6 -6.7 28.96 4 4 1 335 000 95 72 22 -4 -5 -5 000 8 29 20 -6.6 -6.7 28.96 2 2 21 355 000 106 72 22 -4 -5 -5 000 9 29 21 -9.9 -10.1 28.95 7 10 77 52 002 110 77 23 -5 -5 -5 000 10 29 22 -11.1 -11.9 28.96 10 17 83 57 000 106 84 23 -8 -6 -6 000 11 29 23 -12.6 -13.6 28.98 12 21 78 52 000 105 80 25 -9 -6 -6 000 12 30 00 -13.6 -14.0 28.97 12 22 77 51 000 113 63 27 -10 -7 -7 000 13 30 01 -14.9 -15.3 28.96 11 19 78 52 000 115 42 30 -10 -8 -7 000 14 30 02 -16.0 -16.4 28.98 10 21 82 57 000 116 42 33 -10 -9 -8 000 15 30 03 -16.4 -16.8 28.98 12 23 79 54 000 117 53 34 -11 -9 -9 000 16 30 04 -16.0 -16.3 28.99 15 25 79 54 000 116 59 35 -11-10 -9 000 17 30 05 -14.9 -15.3 28.99 17 26 80 55 000 115 56 33 -14-10 -9 000 18 30 06 -12.4 -12.6 28.98 19 29 77 52 000 112 68 33 -13-10 -9 000 19 30 07 -11.5 -12.4 28.96 20 28 75 50 000 104 87 34 -12-11 -9 000 20 30 08 -11.4 -12.3 28.95 20 29 75 49 000 104108 33 -12-13 -9 000 21 30 09 -11.6 -13.2 28.94 23 35 71 45 000 97110 33 -12-12-10 000 22 30 10 -11.0 -13.7 28.93 21 34 74 49 000 87 87 32 -11-11-11 000 23 30 11 -10.3 -12.1 28.92 22 34 77 51 -001 94 99 31 -11-11-10 000 24 30 12 -8.8 -9.4 28.92 25 33 80 54 001 104111 67 -10-11-10 000 25 30 13 -7.4 -8.6 28.90 25 34 82 56 000 98110109 -9-10-10 000 26 30 14 -6.7 -8.1 28.90 25 33 83 57 -001 95109110 -8 -9 -9 000 27 30 15 -6.0 -7.4 28.89 24 33 80 55 001 94108110 -7 -8 -9 000 28 30 16 -5.5 -6.9 28.87 25 33 80 54 001 93108110 -7 -8 -9 000 29 30 17 -5.2 -7.0 28.87 24 33 80 54 000 90105110 -6 -8 -9 001 30 30 18 -5.3 -7.4 28.86 25 34 82 57 -002 87 99108 -6 -8 -9 005 31 30 19 -5.9 -8.3 28.87 26 36 82 56 -002 85 94107 -7 -8 -8 007 32 30 20 -5.8 -7.9 28.86 25 36 81 56 000 87 95105 -6 -7 -8 009 33 30 21 -5.6 -8.3 28.86 25 37 83 58 000 82 90104 -6 -7 -8 011 34 30 22 -5.6 -7.9 28.86 25 37 85 59 001 86 92104 -6 -7 -7 011 35 30 23 -5.7 -7.7 28.85 25 38 85 60 002 89 95105 -6 -7 -7 013 36 31 00 -6.0 -7.6 28.86 25 38 85 59 003 91 98104 -6 -7 -7 011 37 31 01 -6.3 -7.9 28.86 25 38 84 58 004 92100100 -7 -7 -8 008 38 31 02 -7.1 -8.9 28.86 25 39 85 60 003 92 99106 -7 -7 -8 005 39 31 03 -7.3 -8.9 28.86 25 40 84 59 003 93100107 -7 -8 -8 005 40 31 04 -7.2 -8.8 28.86 26 41 84 58 003 93 99109 -7 -8 -8 004 41 31 05 -7.0 -8.6 28.86 25 39 84 58 003 93101106 -7 -8 -9 006 42 31 06 -7.0 -8.7 28.87 26 40 85 60 004 92 99108 -7 -8 -9 007 43 31 07 -6.9 -8.8 28.87 26 40 86 60 003 90 96110 -7 -8 -8 006 44 31 08 -6.4 -8.5 28.86 26 39 85 60 002 88 96109 -7 -8 -8 006 45 31 09 -6.0 -8.0 28.86 27 39 86 61 004 88 96109 -7 -7 -8 007 46 31 10 -5.6 -7.7 28.86 26 37 84 58 004 87 96108 -6 -7 -8 005 47 31 11 -4.8 -6.9 28.85 25 35 82 56 002 87 97110 -6 -7 -8 004 48 31 12 -4.5 -6.6 28.85 25 34 82 56 002 86 95105 -5 -7 -8 002 49 31 13 -4.3 -6.8 28.85 23 33 83 57 002 82 88 89 -5 -6 -7 000 50 31 14 -4.2 -7.1 28.84 21 30 84 58 -003 80 81 85 -5 -6 -7 000 51 31 15 -4.0 -6.6 28.83 19 29 82 57 000 81 80 98 -5 -6 -7 000 52 31 16 -3.6 -6.1 28.83 19 29 84 58 001 82 84 99 -4 -5 -7 000 53 31 17 -3.5 -6.1 28.82 17 28 83 57 001 82 76 98 -4 -5 -6 000 54 31 18 -3.7 -6.1 28.81 15 28 82 56 001 82 70100 -4 -5 -6 000 55 31 19 -4.2 -6.4 28.80 12 25 83 58 001 84 70101 -3 -4 -5 000 56 31 20 -5.0 -7.1 28.78 11 25 92 66 000 86 67 99 -3 -4 -5 000 57 31 21 -4.2 -6.4 28.78 11 21 88 62 000 85 69111 -3 -4 -6 000 58 31 22 -4.3 -6.4 28.78 11 23 93 67 -001 86 69105 -3 -4 -5 000 59 31 23 -5.7 -7.1 28.77 9 19 96 71 000 93 84 94 -3 -4 -5 000 60 01 00 -8.5 -8.8 28.76 8 20 102 77 000 107 82 95 -3 -4 -5 000 61 01 01 -10.7 -11.0 28.76 7 17 102 76 000 110 81102 -3 -4 -5 000 62 01 02 -11.6 -12.0 28.75 7 19 108 83 000 111 84101 -4 -4 -5 000 63 01 03 -12.3 -12.6 28.75 6 21 105 79 000 112 87103 -5 -5 -5 000 64 01 04 -13.5 -13.8 28.75 7 23 103 77 000 113 96 89 -5 -5 -6 000 65 01 05 -10.9 -11.8 28.73 8 22 98 73 000 104100 93 -5 -6 -6 000 66 01 06 -12.8 -13.2 28.73 8 18 92 66 000 113 99100 -5 -6 -7 000 67 01 07 -9.3 -11.5 28.72 10 16 87 61 000 89 96 96 -5 -6 -7 000 68 01 08 -8.0 -11.3 28.72 11 17 82 57 000 80 92 96 -6 -6 -7 000 69 01 09 -8.1 -11.4 28.71 10 19 87 62 000 79 87 95 -6 -6 -7 000 70 01 10 -8.7 -11.9 28.71 10 18 92 66 000 81 82 96 -7 -6 -7 000 71 01 11 -8.3 -11.5 28.70 10 17 89 64 000 80 75 94 -7 -6 -7 000 72 01 12 -7.8 -10.9 28.70 10 15 87 61 000 81 75 91 -7 -6 -7 000 73 01 13 -7.0 -10.0 28.69 9 14 83 57 000 81 80 92 -6 -6 -7 000 74 01 14 -6.4 -9.4 28.69 7 11 84 58 000 81 81 91 -6 -6 -7 000 75 01 15 -5.9 -8.9 28.68 6 9 87 61 000 81 81 85 -6 -5 -7 000 76 01 16 -5.6 -8.6 28.67 5 7 88 63 001 81 82 79 -5 -5 -7 000 77 01 17 -5.5 -8.3 28.66 3 5 99 73 000 82 82 82 -5 -5 -6 000 78 01 18 -5.9 -7.9 28.65 2 3 128 103 000 84 82 86 -5 -5 -6 000 79 01 19 -6.7 -8.5 28.65 3 3 159 134 000 89 81 89 -5 -5 -6 000 80 01 20 -8.1 -9.5 28.65 4 5 167 142 000 94 81 90 -5 -5 -6 000 81 01 21 -9.0 -10.3 28.64 3 5 165 139 000 98 75 88 -5 -5 -6 000 82 01 22 -10.0 -10.3 28.65 2 3 165 140 000 107 60 82 -5 -5 -6 000 83 01 23 -11.8 -11.9 28.65 1 2 173 147 000 111 52 79 -5 -5 -6 000 84 02 00 -16.1 -16.6 28.65 2 2 172 147 000 116 62 79 -5 -6 -6 000 85 02 01 -17.9 -18.5 28.65 2 2 165 140 000 118 74 80 -5 -6 -6 000 86 02 02 -18.4 -19.0 28.65 2 3 144 119 000 119 75 79 -5 -6 -6 000 87 02 03 -19.0 -19.7 28.64 4 5 124 98 001 119 72 78 -5 -6 -6 000 88 02 04 -18.3 -18.6 28.65 3 9 108 82 000 119 75 75 -6 -6 -6 000 89 02 05 -19.1 -19.7 28.65 3 12 108 82 000 120 72 71 -7 -6 -6 000 90 02 06 -19.2 -19.8 28.65 3 9 112 87 001 120 63 68 -7 -7 -6 000 91 02 07 -18.5 -19.0 28.65 3 6 120 94 001 119 58 67 -7 -7 -7 000 92 02 08 -16.8 -17.3 28.65 2 6 144 118 000 117 59 75 -6 -7 -7 000 93 02 09 -15.0 -15.7 28.65 3 7 149 123 000 111 64 79 -7 -8 -7 000 94 02 10 -12.3 -14.0 28.65 4 10 148 122 000 98 60 82 -8 -7 -6 000 95 02 11 -9.9 -12.5 28.66 6 18 116 91 000 87 62 75 -8 -5 -5 000 96 02 12 -9.3 -11.7 28.66 8 13 85 59 000 88 63 65 -7 -5 -6 000 97 02 13 -8.4 -10.2 28.66 7 14 80 54 000 93 66 59 -6 -5 -6 000 98 02 14 -7.6 -9.2 28.66 7 13 79 54 000 93 67 65 -5 -5 -6 000 99 02 15 -6.5 -8.3 28.66 6 10 77 52 -001 91 64 76 -5 -5 -5 000 100 02 16 -5.6 -7.4 28.67 5 10 74 48 000 90 61 76 -4 -5 -5 000 101 02 17 -4.8 -6.8 28.67 4 8 69 44 000 88 58 73 -4 -4 -5 000 102 02 18 -4.8 -6.3 28.68 4 5 97 71 000 91 56 75 -4 -4 -4 000 103 02 19 -5.8 -6.9 28.68 4 6 112 87 000 95 53 81 -4 -3 -4 000 104 02 20 -7.0 -7.7 28.69 4 7 116 91 000 101 53 83 -3 -3 -4 000 105 02 21 -8.0 -8.2 28.69 4 8 116 91 000 107 56 82 -3 -3 -3 000 106 02 22 -9.8 -10.2 28.70 3 7 116 91 000 109 66 88 -2 -2 -3 000 107 02 23 -11.3 -11.7 28.71 3 4 134 108 000 111 69 93 -2 -2 -3 000 108 03 00 -11.2 -11.7 28.72 4 7 128 102 001 110 73 83 -2 -2 -3 000 109 03 01 -11.6 -12.0 28.72 4 7 128 102 001 111 74 83 -2 -2 -3 000 110 03 02 -10.4 -10.7 28.71 4 11 139 114 000 110 71 87 -2 -2 -2 000 111 03 03 -9.8 -10.3 28.71 6 19 131 105 000 106 70 86 -3 -1 -2 001 112 03 04 -11.1 -11.4 28.72 5 16 93 68 000 111 76 72 -2 -1 -2 000 113 03 05 -10.5 -10.7 28.72 6 21 83 58 001 110 66 73 0 0 -2 000 114 03 06 -8.5 -9.2 28.72 6 14 100 74 001 103 60 79 0 0 -1 000 115 03 07 -7.8 -9.1 28.72 4 13 136 110 000 97 59 78 0 -1 -2 000 116 03 08 -7.0 -8.8 28.72 6 14 132 107 -002 89 48 68 0 -1 -2 000 117 03 09 -6.0 -9.0 28.73 8 27 123 97 -004 77 48 50 -2 -2 -2 000 118 03 10 -4.9 -7.9 28.73 10 30 106 80 -003 79 47 46 -2 -2 -3 000 119 03 11 -3.9 -6.7 28.74 12 27 92 66 000 80 50 49 -2 -2 -2 000 120 03 12 -2.9 -5.9 28.75 14 26 85 59 001 77 47 56 -2 -1 -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.