Halley site lat/lon = (-75.5560,-25.6200) cell lat/lon = (-75.5669,-25.5697) Forecast initialized at 2025-09-22/00 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 22 00 -22.5 -25.0 28.92 1 2 84 58 000 100 97 99 -16-14-15 000 1 22 01 -23.5 -24.3 28.91 1 1 235 209 -002 113100102 -15-14-15 002 2 22 02 -24.8 -24.8 28.89 4 4 220 194 000 126100110 -15-14-15 000 3 22 03 -26.8 -27.6 28.89 5 6 222 196 000 128101118 -14-14-14 000 4 22 04 -23.8 -24.1 28.89 4 8 233 207 000 126 99110 -13-13-14 000 5 22 05 -22.0 -23.0 28.87 4 9 239 214 -003 115107115 -13-13-14 000 6 22 06 -20.5 -22.2 28.86 4 10 218 192 -002 106108104 -12-13-13 000 7 22 07 -19.1 -21.0 28.87 4 10 222 196 -002 102108103 -12-12-14 000 8 22 08 -18.1 -20.2 28.85 6 11 214 188 -002 100111107 -12-13-14 000 9 22 09 -17.6 -19.5 28.83 5 11 211 185 -002 101103105 -11-12-12 012 10 22 10 -15.9 -17.9 28.84 6 13 216 190 -001 98 98102 -11-11-11 017 11 22 11 -14.3 -16.1 28.82 5 12 205 179 -001 99102106 -11-11-11 022 12 22 12 -12.9 -14.4 28.81 7 13 207 182 -001 100105113 -10 -9 -9 016 13 22 13 -11.4 -12.8 28.79 8 12 195 170 -001 99104112 -9 -9 -9 015 14 22 14 -10.2 -11.7 28.79 6 10 177 151 -001 98102113 -9 -8 -8 003 15 22 15 -9.5 -10.9 28.79 5 5 192 167 -001 97 96104 -8 -7 -8 001 16 22 16 -9.2 -10.6 28.79 6 9 187 161 000 98 83 98 -8 -6 -7 002 17 22 17 -10.5 -11.2 28.78 8 13 187 162 002 106 82 98 -7 -6 -7 001 18 22 18 -10.8 -11.2 28.77 7 10 195 169 001 110 79 90 -6 -5 -6 001 19 22 19 -11.5 -11.8 28.76 6 9 194 169 002 111 65 86 -5 -5 -6 000 20 22 20 -11.7 -12.0 28.76 6 12 200 174 -005 111 64 91 -4 -4 -6 000 21 22 21 -12.1 -12.5 28.76 7 11 190 164 000 111 76 86 -5 -6 -5 001 22 22 22 -11.9 -12.3 28.77 7 15 101 76 -002 111 79 89 -6 -5 -6 000 23 22 23 -11.1 -11.4 28.79 8 17 85 59 003 110 76 91 -6 -5 -6 000 24 23 00 -9.8 -10.8 28.80 6 14 81 55 001 102 86110 -5 -5 -7 003 25 23 01 -12.5 -13.0 28.82 5 21 94 68 005 112 67 81 -6 -5 -6 000 26 23 02 -11.8 -12.3 28.83 5 17 90 65 002 111 73 98 -5 -6 -6 000 27 23 03 -10.8 -11.9 28.83 7 15 89 64 000 102 66 99 -5 -6 -7 000 28 23 04 -13.3 -13.9 28.84 7 18 101 75 001 111 74 89 -6 -6 -7 000 29 23 05 -13.1 -14.1 28.85 7 17 107 81 -001 106 64 88 -5 -5 -6 000 30 23 06 -13.1 -14.7 28.87 9 19 87 61 002 99 64 87 -5 -6 -7 000 31 23 07 -14.2 -15.3 28.89 7 18 91 65 003 105 65 87 -5 -6 -7 000 32 23 08 -14.4 -15.7 28.90 9 18 91 66 003 104 62 80 -5 -6 -7 000 33 23 09 -13.4 -15.5 28.91 10 22 83 57 003 95 62 79 -7 -6 -7 000 34 23 10 -12.5 -15.2 28.93 12 21 84 58 000 88 67 78 -6 -6 -7 000 35 23 11 -14.9 -16.8 28.95 9 19 80 54 002 97 60 81 -6 -6 -8 000 36 23 12 -14.6 -16.2 28.96 8 25 87 61 001 100 57 92 -6 -7 -8 000 37 23 13 -13.3 -15.5 28.97 10 27 90 65 001 93 71 83 -7 -7 -9 000 38 23 14 -10.9 -13.6 28.98 12 27 84 59 000 86 78 92 -9 -8 -8 000 39 23 15 -10.6 -13.0 29.00 13 27 79 54 001 89 73100 -8 -8 -9 000 40 23 16 -9.5 -12.2 29.02 12 26 83 57 000 85 76102 -7 -8 -9 000 41 23 17 -9.4 -12.0 29.04 12 25 83 57 005 86 72104 -7 -8 -9 000 42 23 18 -10.3 -12.4 29.05 13 26 83 57 005 91 71106 -7 -8 -9 000 43 23 19 -11.5 -12.7 29.06 13 28 83 57 005 101 69 95 -7 -8 -9 000 44 23 20 -12.4 -13.4 29.08 12 26 81 55 002 104 67107 -8 -8 -9 000 45 23 21 -10.4 -13.2 29.08 13 26 82 57 003 85 73 99 -8 -8 -9 000 46 23 22 -10.8 -13.8 29.09 15 27 81 55 004 84 76 92 -8 -9-10 000 47 23 23 -13.7 -15.4 29.11 14 29 83 57 004 98 73101 -9 -9-10 000 48 24 00 -12.6 -15.2 29.12 15 29 84 59 001 89 68100 -9 -9-10 000 49 24 01 -12.6 -15.5 29.12 15 30 83 58 002 87 66108 -9 -9-10 000 50 24 02 -11.7 -14.8 29.13 15 29 85 60 002 84 69103 -9 -9-10 000 51 24 03 -11.2 -14.3 29.13 15 29 87 61 001 83 71 94 -9-10-10 000 52 24 04 -13.9 -15.9 29.14 14 30 87 61 000 95 72102 -10 -9-10 000 53 24 05 -15.5 -16.7 29.16 11 30 87 61 002 106 73107 -10 -9-11 000 54 24 06 -15.8 -16.5 29.16 12 31 90 64 000 111 72111 -10-10-11 000 55 24 07 -14.9 -16.1 29.17 13 32 88 62 -001 105 73110 -10-10-11 000 56 24 08 -15.0 -16.7 29.18 12 32 88 63 -002 100 72112 -10-10-11 000 57 24 09 -14.4 -16.8 29.20 13 31 87 61 001 92 79116 -10-10-12 000 58 24 10 -13.2 -16.4 29.21 15 31 85 59 005 84 79116 -10-10-12 000 59 24 11 -12.7 -16.1 29.23 16 30 85 60 001 81 77116 -10-10-12 000 60 24 12 -13.0 -16.4 29.24 15 30 84 59 004 83 76111 -10-10-12 000 61 24 13 -12.5 -15.8 29.25 15 29 83 57 001 82 74112 -10-10-12 000 62 24 14 -12.3 -15.5 29.26 14 29 83 58 000 83 71107 -10-10-11 000 63 24 15 -12.7 -15.5 29.26 12 26 89 64 -001 86 70104 -10-10-11 000 64 24 16 -13.1 -15.6 29.27 11 26 92 66 001 90 73 98 -10-10-11 000 65 24 17 -13.6 -15.7 29.28 11 26 91 66 002 94 75 97 -10-11-11 000 66 24 18 -14.4 -16.0 29.29 11 27 90 64 004 100 77101 -10-10-11 000 67 24 19 -15.9 -16.8 29.30 9 27 91 66 002 110 78106 -10-10-12 000 68 24 20 -17.8 -18.3 29.32 8 27 96 71 000 117 77104 -10-11-12 000 69 24 21 -19.1 -19.7 29.33 8 19 99 73 001 119 74 99 -10-11-12 000 70 24 22 -20.9 -21.7 29.34 6 15 104 79 000 121 72 96 -10-11-12 000 71 24 23 -22.9 -23.7 29.35 5 14 122 97 000 124 69 97 -11-11-12 000 72 25 00 -24.2 -24.9 29.36 5 15 125 99 000 125 67 98 -11-11-12 000 73 25 01 -24.4 -25.2 29.36 5 14 114 88 -001 125 63 95 -11-12-12 000 74 25 02 -25.1 -25.7 29.36 4 14 110 85 000 126 64 89 -12-12-12 000 75 25 03 -26.1 -26.7 29.36 4 15 128 103 000 128 63 84 -12-12-13 000 76 25 04 -26.5 -27.3 29.36 5 12 169 143 000 128 58 84 -12-12-13 000 77 25 05 -24.4 -24.8 29.37 5 10 161 136 000 125 56 82 -12-12-13 000 78 25 06 -23.6 -23.8 29.37 4 6 175 149 001 125 55 74 -12-12-13 000 79 25 07 -25.8 -26.5 29.37 6 6 211 186 004 127 55 75 -13-12-13 000 80 25 08 -27.2 -28.0 29.36 5 5 222 196 001 129 56 77 -12-12-13 000 81 25 09 -27.7 -28.7 29.35 5 5 222 196 001 130 58 73 -12-12-13 000 82 25 10 -26.8 -27.7 29.33 5 5 231 206 001 129 61 69 -12-12-13 000 83 25 11 -25.6 -26.3 29.32 5 7 253 227 -002 128 62 63 -12-12-12 000 84 25 12 -26.1 -26.5 29.32 4 9 274 248 -001 129 54 57 -12-12-11 000 85 25 13 -25.0 -25.5 29.30 5 13 287 262 004 127 58 50 -12-12-11 000 86 25 14 -24.3 -24.8 29.29 5 14 276 251 002 126 54 48 -13-12-11 000 87 25 15 -23.6 -24.3 29.27 4 11 284 259 000 125 53 45 -13-12-12 000 88 25 16 -23.3 -24.0 29.25 5 12 284 258 000 125 56 38 -14-12-12 000 89 25 17 -23.1 -23.9 29.24 5 10 280 255 000 124 54 33 -14-12-11 000 90 25 18 -24.1 -24.9 29.23 5 8 265 240 001 125 49 29 -14-12-11 000 91 25 19 -27.0 -27.8 29.22 2 5 202 176 002 129 44 31 -14-12-11 000 92 25 20 -28.1 -29.1 29.22 3 6 117 91 -002 131 44 29 -13-12-11 000 93 25 21 -30.3 -31.3 29.23 5 9 114 88 -011 133 44 27 -13-12-12 000 94 25 22 -31.0 -31.9 29.24 6 13 95 70 -016 134 41 28 -14-12-12 000 95 25 23 -31.5 -32.5 29.25 6 15 84 58 -005 135 38 30 -15-12-12 000 96 26 00 -32.2 -32.9 29.26 4 15 74 48 -002 136 38 32 -16-13-13 000 97 26 01 -33.9 -35.3 29.26 4 12 122 96 000 129 46 32 -16-15-13 000 98 26 02 -32.5 -33.4 29.27 7 21 137 112 000 136 47 33 -16-15-14 000 99 26 03 -32.8 -33.7 29.27 6 11 126 100 003 136 45 35 -17-16-15 000 100 26 04 -33.4 -34.2 29.27 5 16 132 106 003 136 51 35 -18-17-15 000 101 26 05 -32.2 -32.9 29.28 7 13 128 103 004 135 43 37 -18-16-15 000 102 26 06 -31.7 -32.7 29.30 5 10 131 105 006 135 42 42 -18-15-16 000 103 26 07 -31.1 -31.4 29.30 3 6 146 121 006 135 47 40 -19-16-16 000 104 26 08 -30.0 -30.3 29.32 4 4 188 162 011 134 53 37 -20-17-17 000 105 26 09 -30.8 -31.6 29.33 5 5 194 169 009 134 61 35 -19-17-17 000 106 26 10 -28.8 -29.0 29.33 3 4 189 164 008 131 59 34 -19-17-18 000 107 26 11 -29.3 -30.2 29.34 6 6 194 168 006 132 62 34 -19-17-18 000 108 26 12 -29.2 -30.3 29.35 4 5 194 168 006 132 59 33 -19-17-18 000 109 26 13 -28.2 -29.4 29.35 3 4 186 160 008 127 51 31 -19-17-18 000 110 26 14 -27.5 -28.4 29.35 4 5 211 185 005 130 53 33 -18-17-18 000 111 26 15 -27.1 -28.2 29.35 4 6 213 187 007 127 57 33 -18-17-17 000 112 26 16 -26.9 -28.0 29.36 6 8 215 189 006 126 58 33 -18-17-17 000 113 26 17 -26.9 -27.8 29.38 6 8 220 194 005 127 58 32 -18-17-16 000 114 26 18 -27.2 -27.8 29.38 5 7 212 187 005 128 55 33 -17-17-16 000 115 26 19 -28.8 -29.6 29.39 6 8 220 195 003 131 53 35 -17-16-15 000 116 26 20 -29.9 -30.6 29.40 6 7 231 206 004 132 51 38 -16-16-15 000 117 26 21 -31.7 -32.5 29.41 6 7 247 221 003 134 50 37 -16-16-15 000 118 26 22 -32.4 -33.3 29.42 6 9 242 216 002 135 49 29 -16-16-15 000 119 26 23 -32.3 -33.1 29.43 5 8 234 209 003 136 49 27 -16-15-15 000 120 27 00 -31.4 -32.3 29.44 4 6 240 215 002 135 48 25 -16-15-15 000 * 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.