Halley site lat/lon = (-75.5560,-25.6200) cell lat/lon = (-75.5669,-25.5697) Forecast initialized at 2025-09-21/00 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 21 00 -8.3 -9.6 28.66 17 20 76 50 000 93 96 97 -9-10-11 000 1 21 01 -8.4 -10.0 28.65 18 30 74 49 -005 95104105 -9-10-11 016 2 21 02 -8.5 -10.1 28.65 20 32 78 52 -007 95105110 -9-10-11 013 3 21 03 -8.7 -10.3 28.64 21 32 79 53 -003 95103114 -9-10-11 004 4 21 04 -8.9 -10.8 28.65 23 34 77 51 -007 93101111 -10-11-12 017 5 21 05 -9.9 -12.2 28.68 24 34 71 45 -006 89107118 -11-12-13 006 6 21 06 -10.6 -12.4 28.70 23 32 70 44 -002 94113116 -11-13-14 004 7 21 07 -10.4 -12.1 28.73 24 33 66 41 -005 95110117 -11-12-13 012 8 21 08 -10.6 -12.2 28.76 23 31 55 29 -008 96108110 -11-12-13 032 9 21 09 -12.9 -15.0 28.85 24 32 42 16 -009 95106104 -14-14-13 023 10 21 10 -14.9 -17.1 28.90 22 30 47 22 -006 95104104 -16-15-15 015 11 21 11 -15.3 -17.6 28.94 19 27 56 31 -005 95105105 -16-17-16 013 12 21 12 -15.4 -17.8 28.97 18 24 62 36 000 94104106 -16-17-17 012 13 21 13 -15.5 -17.8 28.96 16 23 64 38 000 94102105 -17-18-17 014 14 21 14 -15.1 -17.5 28.97 15 22 64 39 -001 94102105 -16-17-18 013 15 21 15 -15.0 -17.3 28.97 13 20 63 37 -001 94100102 -16-17-17 009 16 21 16 -14.9 -17.1 28.96 11 19 61 36 000 95 99101 -15-16-16 006 17 21 17 -15.3 -17.1 28.94 6 15 43 18 001 100 95105 -14-15-16 004 18 21 18 -16.8 -18.0 28.93 4 10 54 29 001 107106105 -14-14-16 004 19 21 19 -18.5 -18.6 28.91 2 7 98 72 000 118101100 -14-15-16 001 20 21 20 -22.5 -22.8 28.90 3 9 120 94 -001 124 91100 -13-14-16 000 21 21 21 -25.6 -25.9 28.90 2 12 180 154 000 128 95103 -13-14-15 000 22 21 22 -25.9 -26.4 28.89 5 7 189 163 000 128100108 -14-14-15 000 23 21 23 -24.0 -24.5 28.89 5 5 159 134 000 126101112 -14-14-15 000 24 22 00 -22.8 -23.4 28.90 1 1 147 121 000 124104117 -14-14-15 001 25 22 01 -21.5 -21.7 28.90 1 4 281 256 000 123103109 -14-14-15 001 26 22 02 -22.4 -24.1 28.90 4 6 274 248 000 111103107 -14-14-15 005 27 22 03 -24.2 -25.3 28.89 6 7 251 226 -001 119103100 -14-14-14 004 28 22 04 -25.3 -26.1 28.90 7 9 242 217 -002 126103104 -14-14-14 001 29 22 05 -24.2 -24.4 28.90 3 9 251 225 000 126104104 -14-14-14 000 30 22 06 -22.0 -23.5 28.90 4 8 258 232 -002 109102105 -13-13-14 000 31 22 07 -20.0 -22.0 28.91 4 8 223 197 -001 102104 95 -13-13-14 000 32 22 08 -18.5 -20.6 28.90 4 7 220 194 -003 99111103 -12-13-15 000 33 22 09 -17.5 -19.3 28.89 5 9 210 184 -003 102103104 -12-13-13 006 34 22 10 -15.8 -17.7 28.88 6 11 218 192 -004 100101113 -12-12-12 015 35 22 11 -13.8 -15.6 28.87 6 7 188 162 -003 99102106 -12-12-12 031 36 22 12 -13.0 -14.6 28.87 6 12 190 164 -002 98107108 -11-11-11 024 37 22 13 -12.0 -13.5 28.86 4 4 183 158 000 98109108 -10-10-10 018 38 22 14 -11.9 -13.2 28.85 4 8 164 139 -001 101103109 -10 -9-10 010 39 22 15 -11.7 -12.6 28.85 3 3 163 138 000 106 94112 -8 -9-10 001 40 22 16 -10.9 -11.7 28.84 1 1 170 144 000 104 85114 -8 -8 -9 000 41 22 17 -12.1 -12.6 28.84 4 4 189 164 000 107 75106 -8 -8 -9 000 42 22 18 -14.7 -15.2 28.85 7 10 200 175 000 114 72 92 -8 -7 -8 000 43 22 19 -16.3 -16.8 28.85 7 13 201 175 -001 116 73 90 -8 -7 -8 000 44 22 20 -17.7 -18.2 28.84 7 11 213 188 -002 118 70 89 -7 -7 -8 000 45 22 21 -19.8 -20.4 28.84 7 10 210 184 000 120 69 90 -7 -7 -8 000 46 22 22 -21.5 -22.0 28.85 6 9 213 187 002 123 72 83 -7 -7 -7 000 47 22 23 -20.0 -20.5 28.85 6 10 219 194 000 121 70 87 -6 -6 -7 000 48 23 00 -18.9 -19.4 28.86 5 10 211 185 002 120 70 85 -6 -6 -7 000 49 23 01 -19.4 -20.0 28.88 4 9 155 130 -004 120 80102 -8 -7 -7 000 50 23 02 -18.1 -19.0 28.88 5 15 131 106 -001 115 83108 -7 -6 -8 001 51 23 03 -15.0 -15.5 28.90 7 16 90 65 000 115 86109 -6 -7 -8 001 52 23 04 -15.2 -15.7 28.92 7 22 83 57 000 115 82 94 -7 -7 -8 000 53 23 05 -13.9 -14.5 28.93 5 17 84 58 -005 113 83101 -6 -7 -8 001 54 23 06 -13.6 -14.1 28.94 5 14 97 71 -002 113 93101 -6 -7 -9 002 55 23 07 -14.3 -14.9 28.94 6 15 121 95 000 114 83 98 -6 -7 -8 002 56 23 08 -15.5 -16.0 28.95 7 19 103 77 000 115 60 76 -9 -7 -7 000 57 23 09 -17.0 -17.4 28.97 9 19 95 70 000 117 60 80 -6 -6 -7 000 58 23 10 -18.2 -18.6 28.98 8 28 92 66 000 118 61 75 -7 -6 -7 000 59 23 11 -16.3 -16.9 28.99 9 23 93 67 -002 114 65 78 -6 -7 -8 000 60 23 12 -15.5 -16.6 29.01 8 21 95 69 -004 107 63 81 -6 -6 -8 000 61 23 13 -12.9 -15.4 29.01 8 25 92 67 000 90 57 79 -6 -6 -7 000 62 23 14 -13.4 -15.3 29.02 8 20 90 64 001 95 59 77 -7 -6 -7 000 63 23 15 -12.6 -15.0 29.04 12 24 81 55 000 91 59 92 -8 -6 -8 000 64 23 16 -10.2 -12.9 29.04 12 20 85 60 004 86 60 92 -7 -6 -8 000 65 23 17 -11.2 -13.0 29.05 11 24 87 62 002 95 66 89 -8 -7 -8 000 66 23 18 -11.0 -12.4 29.05 10 22 87 62 003 98 66 96 -7 -7 -8 000 67 23 19 -9.4 -12.0 29.06 12 26 80 55 007 86 58 88 -8 -7 -8 000 68 23 20 -11.1 -13.4 29.06 13 26 81 55 000 90 64 94 -8 -7 -8 000 69 23 21 -10.5 -12.8 29.07 13 26 78 52 001 90 71 98 -8 -8 -9 000 70 23 22 -9.1 -11.8 29.07 15 27 79 54 003 85 76 99 -8 -8 -9 000 71 23 23 -9.9 -12.3 29.08 14 27 80 55 000 88 83101 -8 -8 -9 000 72 24 00 -9.6 -12.4 29.08 15 27 85 59 -001 84 83 97 -9 -9 -9 000 73 24 01 -10.8 -13.5 29.08 15 27 83 58 000 87 73105 -9 -8 -9 000 74 24 02 -10.3 -13.2 29.08 16 31 83 58 004 83 73107 -8 -8 -9 000 75 24 03 -10.0 -13.0 29.08 17 32 84 59 002 84 71104 -8 -9-10 000 76 24 04 -10.4 -13.2 29.08 17 32 84 58 000 86 81101 -9 -9-10 000 77 24 05 -11.6 -13.9 29.08 15 33 82 57 -001 91 86104 -9 -9-10 000 78 24 06 -12.5 -13.9 29.09 15 36 79 54 000 100 88111 -9-10-11 000 79 24 07 -11.7 -13.0 29.10 17 36 82 56 001 100 94113 -10-10-11 000 80 24 08 -11.0 -12.4 29.11 20 36 80 55 001 99 99111 -10-11-12 001 81 24 09 -10.5 -11.9 29.11 21 35 79 53 000 98101107 -10-11-12 004 82 24 10 -9.7 -11.3 29.13 21 34 76 50 000 96102103 -10-11-12 009 83 24 11 -9.0 -10.9 29.15 22 32 71 45 000 93102105 -10-11-12 022 84 24 12 -9.0 -10.9 29.17 22 32 68 43 000 92102105 -10-11-12 028 85 24 13 -8.8 -10.7 29.19 22 31 68 43 -003 92102104 -10-11-12 029 86 24 14 -8.6 -10.6 29.20 21 30 69 43 -002 91102107 -9-11-12 023 87 24 15 -8.5 -10.3 29.21 21 30 70 45 000 92102104 -9-11-12 023 88 24 16 -8.6 -10.4 29.22 21 30 71 46 001 92102101 -9-11-12 023 89 24 17 -9.0 -10.8 29.23 19 29 72 46 000 93102101 -10-11-12 013 90 24 18 -9.9 -11.7 29.25 17 30 74 48 000 94100103 -10-11-12 007 91 24 19 -10.5 -12.0 29.26 15 29 76 51 000 98 99 99 -10-11-12 003 92 24 20 -10.6 -12.0 29.26 15 27 78 52 000 99102100 -10-11-12 004 93 24 21 -10.7 -12.0 29.27 16 27 79 53 000 99101101 -10-11-12 005 94 24 22 -11.5 -12.3 29.29 14 26 80 54 -001 105 99104 -10-11-12 004 95 24 23 -12.4 -12.8 29.30 12 24 86 61 000 111100106 -10-11-12 003 96 25 00 -12.6 -13.3 29.30 13 24 87 62 002 107 98101 -10-11-12 004 97 25 01 -12.8 -13.8 29.31 13 24 86 61 001 105 97101 -10-11-12 005 98 25 02 -13.0 -13.9 29.31 12 23 84 59 002 106 96101 -11-11-12 004 99 25 03 -13.1 -14.0 29.31 11 23 86 60 000 107 99101 -11-12-13 004 100 25 04 -13.0 -13.8 29.31 12 23 82 57 000 107 98101 -11-12-13 003 101 25 05 -13.5 -13.9 29.32 10 22 85 60 000 112100100 -11-12-13 002 102 25 06 -14.8 -15.3 29.32 8 20 93 67 000 114103 93 -11-12-13 001 103 25 07 -16.7 -17.2 29.32 7 17 101 75 001 117103 92 -11-12-13 000 104 25 08 -17.3 -17.8 29.33 7 21 100 74 001 117105 92 -12-12-13 001 105 25 09 -15.9 -16.3 29.33 7 21 98 72 000 116 98 94 -12-12-13 001 106 25 10 -15.9 -17.0 29.33 7 20 95 69 001 109 92 94 -12-12-13 001 107 25 11 -17.0 -18.7 29.33 6 15 84 58 001 103 83 92 -12-13-13 000 108 25 12 -17.6 -17.9 29.33 2 12 149 124 000 117 62 90 -12-13-13 000 109 25 13 -18.4 -18.9 29.33 5 8 176 151 000 119 64 87 -12-13-13 000 110 25 14 -18.8 -19.6 29.33 5 5 200 174 000 117 68 83 -13-13-14 000 111 25 15 -18.7 -19.7 29.31 5 5 218 192 001 114 64 81 -12-13-14 000 112 25 16 -18.7 -19.5 29.30 6 10 250 225 003 116 63 73 -11-12-13 000 113 25 17 -19.0 -19.6 29.29 7 11 263 237 001 119 64 68 -11-12-12 000 114 25 18 -19.7 -20.3 29.27 7 15 266 240 -004 120 66 63 -11-11-12 000 115 25 19 -20.8 -21.5 29.26 7 14 269 244 002 121 61 52 -11-12-12 000 116 25 20 -22.3 -22.9 29.25 6 12 269 243 003 123 52 43 -12-11-11 000 117 25 21 -23.3 -23.9 29.24 5 10 269 243 004 125 44 39 -12-11-10 000 118 25 22 -25.0 -25.5 29.23 3 6 243 217 004 127 45 37 -12-11-10 000 119 25 23 -28.5 -29.4 29.23 4 5 195 169 003 131 42 33 -12-11-11 000 120 26 00 -27.0 -27.5 29.23 5 11 154 129 003 128 42 30 -13-12-11 000 * 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.