Halley site lat/lon = (-75.4330,-26.2170) cell lat/lon = (-75.4273,-26.2060) Forecast initialized at 2025-07-28/12 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 -18.5 -21.3 29.42 6 7 198 172 000 86 72 68 -9 -8 -9 000 1 28 13 -15.6 -15.6 29.41 6 8 205 179 000 117 75 72 -9 -8 -9 000 2 28 14 -19.2 -19.2 29.40 6 11 199 173 000 122 77 74 -10 -9-10 000 3 28 15 -19.2 -19.2 29.38 6 12 218 192 000 122 74 70 -10 -9 -9 000 4 28 16 -18.7 -18.7 29.38 6 13 222 196 001 121 71 69 -9 -9 -9 000 5 28 17 -20.8 -20.8 29.41 6 14 186 160 -001 124 62 69 -11 -9 -9 000 6 28 18 -20.5 -20.5 29.39 7 15 210 184 002 123 58 62 -12-10-10 000 7 28 19 -22.5 -22.5 29.34 7 13 200 174 003 126 55 58 -12-11-10 000 8 28 20 -23.5 -23.5 29.35 6 12 196 170 002 127 63 60 -12-11-10 000 9 28 21 -21.2 -21.2 29.34 6 15 212 186 001 124 66 59 -12-11-10 000 10 28 22 -18.7 -18.7 29.30 9 17 228 202 001 121 65 55 -12-10-10 000 11 28 23 -17.3 -17.3 29.27 11 20 232 206 000 120 70 52 -12-10-10 000 12 29 00 -16.7 -16.7 29.26 13 22 236 209 000 119 74 49 -12-10-10 000 13 29 01 -16.2 -16.2 29.23 15 25 240 214 001 118 65 47 -13-10-10 000 14 29 02 -16.0 -16.0 29.21 14 28 230 204 001 117 64 48 -13-11-10 000 15 29 03 -16.5 -16.5 29.20 12 24 228 202 001 119 66 50 -15-12-11 000 16 29 04 -16.6 -16.6 29.19 12 23 229 203 002 119 62 52 -16-12-11 000 17 29 05 -16.8 -16.8 29.17 12 23 227 200 000 119 64 49 -16-14-12 000 18 29 06 -17.3 -17.3 29.16 11 20 223 196 000 119 61 45 -17-14-12 000 19 29 07 -19.5 -19.5 29.15 9 18 207 180 000 122 65 37 -17-15-13 000 20 29 08 -22.5 -22.5 29.13 6 15 196 170 000 126 69 31 -18-16-13 000 21 29 09 -24.2 -24.2 29.12 5 10 183 157 000 128 69 27 -18-16-14 000 22 29 10 -26.5 -26.5 29.11 4 6 137 111 000 131 71 24 -18-17-15 001 23 29 11 -25.7 -25.7 29.11 4 4 108 82 000 130 70 24 -19-17-15 001 24 29 12 -22.9 -22.9 29.11 5 7 100 74 000 126 88 29 -21-18-16 001 25 29 13 -20.8 -20.8 29.12 8 13 86 59 -001 124122 32 -19-20-18 002 26 29 14 -26.8 -26.8 29.12 8 16 123 96 000 132 40 36 -19-19-20 000 27 29 15 -28.6 -28.6 29.11 13 19 102 76 -001 135 71 33 -23-20-19 001 28 29 16 -25.5 -25.5 29.10 14 30 70 44 -001 131 71 28 -22-22-20 002 29 29 17 -23.1 -23.1 29.11 11 20 69 43 001 127 47 27 -22-20-21 001 30 29 18 -24.4 -24.4 29.11 10 19 83 57 000 129 63 33 -23-22-20 001 31 29 19 -27.5 -27.5 29.10 8 21 102 76 000 133 64 40 -22-22-21 001 32 29 20 -30.0 -30.0 29.09 8 18 113 87 000 137 60 41 -22-22-22 001 33 29 21 -30.4 -30.4 29.09 10 22 110 84 000 138 58 46 -21-22-23 002 34 29 22 -25.1 -25.1 29.08 15 29 82 55 001 130 64 42 -23-22-23 002 35 29 23 -27.9 -27.9 29.06 16 30 99 73 001 134120 35 -23-23-23 001 36 30 00 -26.3 -26.3 29.05 20 32 90 64 001 132115 47 -27-24-21 002 37 30 01 -21.7 -21.7 29.04 23 35 78 52 -001 103 77 57 -24-24-23 000 38 30 02 -22.9 -22.9 29.03 21 34 72 46 -001 119 56 59 -23-22-23 000 39 30 03 -23.9 -23.9 29.02 22 33 82 56 000 116 51 48 -24-22-23 000 40 30 04 -24.7 -24.7 29.02 23 35 83 57 -001 130107 59 -27-23-23 000 41 30 05 -26.1 -26.1 29.03 25 33 87 61 -001 132110 78 -27-24-25 000 42 30 06 -24.8 -24.8 29.03 24 35 83 57 -004 130105112 -27-25-24 000 43 30 07 -23.9 -23.9 29.02 25 36 80 54 -001 125109117 -27-26-23 000 44 30 08 -23.2 -23.2 29.01 26 35 79 53 000 113107118 -27-27-24 000 45 30 09 -23.0 -23.0 29.02 25 36 76 50 001 104 81114 -26-26-25 000 46 30 10 -24.3 -24.3 29.02 25 35 82 56 001 109100107 -26-25-25 000 47 30 11 -23.9 -23.9 29.02 24 34 82 56 001 116107 80 -27-26-25 000 48 30 12 -25.1 -25.1 29.01 24 34 83 57 000 116101 89 -27-27-27 000 49 30 13 -25.4 -25.4 29.01 24 34 81 55 -001 119103108 -28-28-27 000 50 30 14 -25.5 -25.5 29.01 23 32 81 54 -002 125104121 -29-28-26 000 51 30 15 -25.5 -25.5 29.01 23 31 79 53 000 129104118 -29-28-26 000 52 30 16 -25.7 -25.7 29.01 23 29 79 52 -001 132105119 -29-28-26 000 53 30 17 -25.9 -25.9 29.02 22 30 79 52 -001 132105117 -29-28-27 000 54 30 18 -26.1 -26.1 29.02 22 29 79 53 -001 132104111 -28-28-27 000 55 30 19 -26.4 -26.4 29.02 20 28 80 54 000 133104106 -28-28-28 000 56 30 20 -26.7 -26.7 29.01 19 27 81 54 000 133104100 -28-28-28 000 57 30 21 -26.9 -26.9 29.01 18 26 80 54 000 133 98 98 -28-28-28 000 58 30 22 -27.2 -27.2 29.02 18 26 79 53 001 134 89 97 -27-28-28 000 59 30 23 -27.2 -27.2 29.02 18 26 79 53 000 134 84 97 -27-28-28 001 60 31 00 -27.6 -27.6 29.03 16 24 79 53 000 134 89 99 -27-28-28 001 61 31 01 -27.7 -27.7 29.03 15 22 80 54 000 134 95103 -26-27-28 001 62 31 02 -28.6 -28.6 29.04 14 19 86 60 000 135 93106 -26-27-27 001 63 31 03 -28.9 -28.9 29.05 14 20 87 61 000 136 91108 -27-27-27 001 64 31 04 -29.0 -29.0 29.06 14 21 87 61 000 136 87109 -27-27-27 001 65 31 05 -30.0 -30.0 29.07 13 19 90 64 000 137 81108 -27-27-27 002 66 31 06 -31.1 -31.1 29.09 11 17 96 70 000 139 67108 -26-27-27 002 67 31 07 -32.5 -32.5 29.12 10 15 97 71 -001 141 62109 -27-27-27 002 68 31 08 -31.5 -31.5 29.13 10 16 97 71 -001 139 63106 -27-27-27 002 69 31 09 -31.9 -31.9 29.14 10 13 95 69 000 140 70102 -26-27-27 003 70 31 10 -31.0 -31.0 29.16 10 14 91 64 000 138 64102 -27-27-27 003 71 31 11 -28.1 -28.1 29.18 10 16 81 55 -001 134 63103 -29-27-27 002 72 31 12 -29.5 -29.5 29.20 9 15 90 64 -001 136 61104 -28-27-27 001 73 31 13 -29.1 -29.1 29.22 8 13 95 69 000 135 52105 -27-27-27 001 74 31 14 -28.9 -28.9 29.23 8 12 98 72 -001 135 43105 -26-27-27 001 75 31 15 -27.9 -27.9 29.25 8 12 96 69 000 134 44106 -26-27-27 001 76 31 16 -27.4 -27.4 29.26 8 11 96 70 000 133 48106 -25-26-26 000 77 31 17 -26.8 -26.8 29.27 7 9 94 68 000 132 51105 -25-26-26 000 78 31 18 -27.0 -27.0 29.28 6 7 98 72 000 132 54105 -25-26-26 000 79 31 19 -27.1 -27.1 29.29 6 6 95 69 000 132 58105 -25-26-26 000 80 31 20 -26.8 -26.8 29.30 6 6 92 66 002 132 64102 -25-25-26 000 81 31 21 -26.0 -26.0 29.30 6 6 88 62 002 131 80 98 -25-25-26 000 82 31 22 -25.1 -25.1 29.30 6 7 84 58 001 130 99 94 -25-25-25 001 83 31 23 -24.5 -24.5 29.31 6 7 84 58 001 129121 90 -25-25-25 001 84 01 00 -23.3 -23.3 29.32 7 9 80 54 001 127128 81 -24-25-25 002 85 01 01 -21.6 -21.6 29.32 8 10 71 44 -001 125127 76 -23-25-25 004 86 01 02 -20.6 -20.6 29.32 9 11 66 40 000 120127 82 -23-24-25 004 87 01 03 -20.6 -20.6 29.31 11 13 70 44 001 123121 97 -23-24-24 004 88 01 04 -19.9 -19.9 29.30 13 15 65 38 001 114116101 -23-24-24 007 89 01 05 -20.2 -20.2 29.29 16 18 66 40 001 113114105 -23-24-23 010 90 01 06 -20.4 -20.4 29.28 17 20 65 39 000 113112106 -24-24-23 010 91 01 07 -20.3 -20.3 29.26 19 22 66 40 000 114112103 -23-24-23 013 92 01 08 -20.2 -20.2 29.24 21 24 67 41 -002 112111101 -23-23-23 018 93 01 09 -20.3 -20.3 29.22 22 26 69 43 -007 111110102 -23-23-22 021 94 01 10 -21.3 -21.3 29.20 23 27 72 46 -006 114106104 -24-23-22 016 95 01 11 -21.7 -21.7 29.18 24 28 73 47 -001 114104103 -25-23-21 016 96 01 12 -22.3 -22.3 29.16 25 29 74 48 000 111102105 -25-23-21 030 97 01 13 -22.4 -22.4 29.13 27 31 75 49 -002 111102104 -25-23-21 035 98 01 14 -22.1 -22.1 29.10 28 32 74 48 -004 111102103 -25-23-22 028 99 01 15 -21.8 -21.8 29.07 28 33 74 47 000 109101102 -25-23-23 031 100 01 16 -21.7 -21.7 29.05 28 34 75 49 -005 109101102 -25-23-23 031 101 01 17 -21.4 -21.4 29.02 28 33 75 49 -003 108101101 -25-23-23 028 102 01 18 -21.5 -21.5 29.00 26 31 77 51 -005 108101100 -25-23-22 022 103 01 19 -21.9 -21.9 28.99 25 30 80 54 -003 107101100 -25-23-22 028 104 01 20 -22.2 -22.2 28.98 25 29 82 56 -002 107 99 98 -26-23-22 035 105 01 21 -22.4 -22.4 28.97 24 28 84 58 -002 108100 99 -26-23-22 021 106 01 22 -22.7 -22.7 28.97 22 27 85 59 000 109 99101 -26-23-21 014 107 01 23 -22.6 -22.6 28.97 21 26 86 60 002 111 99103 -26-22-21 004 108 02 00 -22.4 -22.4 28.98 19 24 86 60 000 113 99101 -25-22-21 001 109 02 01 -22.5 -22.5 28.98 17 23 85 58 002 119 98 95 -25-21-22 000 110 02 02 -22.3 -22.3 28.98 16 21 82 55 004 125 95 90 -24-21-22 000 111 02 03 -22.1 -22.1 28.97 15 20 81 55 006 126 89 85 -23-21-22 000 112 02 04 -22.8 -22.8 28.98 12 18 82 56 002 127 90 86 -24-22-22 000 113 02 05 -24.3 -24.3 29.00 10 15 87 61 -001 129 94 88 -25-22-22 000 114 02 06 -24.1 -24.1 29.01 9 13 88 62 002 128 96 88 -24-22-22 000 115 02 07 -24.2 -24.2 29.00 9 13 86 60 002 129 96 85 -24-22-22 001 116 02 08 -25.0 -25.0 28.99 9 14 91 65 000 130 96 82 -23-22-22 002 117 02 09 -25.7 -25.7 29.00 10 14 89 63 -001 131 98 85 -24-22-23 002 118 02 10 -23.8 -23.8 28.98 12 19 78 52 000 128 97 82 -23-22-22 001 119 02 11 -22.8 -22.8 28.96 16 22 74 47 002 127 98 80 -23-22-22 000 120 02 12 -22.9 -22.9 28.94 19 25 69 43 -002 127 99 80 -24-22-22 000 * 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.