Halley site lat/lon = (-75.4330,-26.2170) cell lat/lon = (-75.4273,-26.2060) Forecast initialized at 2025-07-26/12 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 26 12 -9.3 -12.6 28.71 38 42 79 53 000 78 86 90 -10-11-12 000 1 26 13 -9.0 -11.9 28.73 40 56 78 52 -001 81 91101 -11-12-13 000 2 26 14 -9.3 -12.2 28.76 34 48 79 53 001 80 91112 -11-12-14 000 3 26 15 -9.8 -12.6 28.78 34 45 75 49 001 82 94120 -12-13-15 002 4 26 16 -11.8 -13.7 28.86 27 39 68 41 000 91101111 -14-15-16 000 5 26 17 -14.8 -15.8 28.91 21 37 80 54 -002 98 97107 -16-16-17 000 6 26 18 -14.2 -14.9 28.95 22 37 74 47 000 102101105 -16-16-17 000 7 26 19 -13.6 -14.8 28.98 23 37 77 51 004 96 98 96 -15-16-18 000 8 26 20 -13.3 -15.7 28.98 28 38 81 55 011 84 92 95 -16-17-18 000 9 26 21 -13.6 -16.1 29.01 29 41 78 52 017 82 83 90 -16-17-18 001 10 26 22 -13.6 -16.1 29.02 27 42 77 51 -003 83 82 91 -16-17-18 001 11 26 23 -12.9 -16.1 29.05 26 39 81 55 009 77 76 93 -15-16-17 000 12 27 00 -12.6 -15.4 29.06 24 39 83 57 008 82 78 98 -14-15-16 000 13 27 01 -12.4 -15.3 29.07 26 40 78 52 005 79 78 96 -14-15-16 000 14 27 02 -12.2 -15.2 29.08 26 39 75 48 007 79 81 92 -14-15-16 000 15 27 03 -13.1 -14.3 29.09 20 33 92 66 015 97100 95 -15-15-16 004 16 27 04 -12.4 -14.8 29.13 29 40 81 55 009 85 86 99 -14-16-17 006 17 27 05 -12.3 -14.9 29.16 30 40 79 53 -009 82 86110 -14-16-17 012 18 27 06 -14.3 -15.9 29.20 24 36 57 30 004 91 96102 -17-17-18 015 19 27 07 -15.5 -17.4 29.22 26 40 56 30 002 87 91 99 -18-19-19 005 20 27 08 -15.9 -17.7 29.26 24 39 58 32 -003 88 87 97 -18-19-19 003 21 27 09 -15.3 -17.0 29.28 22 36 58 32 001 91 96107 -18-18-18 003 22 27 10 -14.7 -16.0 29.31 17 31 70 44 001 96100111 -17-17-18 005 23 27 11 -12.7 -15.1 29.32 20 30 78 52 005 85 90104 -15-16-17 004 24 27 12 -12.0 -14.0 29.33 18 27 78 51 002 90 92104 -14-15-16 002 25 27 13 -12.3 -13.9 29.35 17 26 82 55 004 94 86109 -14-15-16 002 26 27 14 -14.3 -15.1 29.37 13 24 81 55 005 104 80100 -13-14-15 000 27 27 15 -16.2 -16.3 29.38 10 22 92 66 000 112 69 90 -12-14-15 000 28 27 16 -21.9 -21.9 29.40 8 17 130 104 000 125 64 93 -13-13-14 000 29 27 17 -22.0 -22.0 29.42 8 18 112 85 001 125 62 82 -13-13-14 000 30 27 18 -22.9 -22.9 29.44 7 16 126 100 004 126 62 85 -14-13-14 000 31 27 19 -21.7 -21.7 29.45 7 18 122 96 004 125 59 85 -13-13-14 000 32 27 20 -21.4 -21.4 29.45 8 18 113 87 005 124 55 86 -13-13-14 000 33 27 21 -20.9 -20.9 29.47 8 15 107 81 000 124 60 84 -13-13-14 000 34 27 22 -20.4 -20.4 29.49 6 13 117 90 001 123 63 87 -12-13-14 000 35 27 23 -21.0 -21.0 29.50 7 16 102 76 003 124 68 97 -13-13-14 000 36 28 00 -22.2 -22.2 29.50 7 12 141 114 002 125 69 94 -12-13-14 000 37 28 01 -23.3 -23.3 29.50 5 10 132 106 -002 127 67 97 -12-12-14 000 38 28 02 -25.7 -25.7 29.50 7 7 157 131 003 130 68 97 -12-13-14 000 39 28 03 -23.5 -23.5 29.50 6 8 147 121 001 127 66 93 -12-12-14 000 40 28 04 -22.5 -22.5 29.50 6 6 154 128 003 126 65 86 -12-12-14 000 41 28 05 -22.0 -22.0 29.50 6 6 160 134 000 125 65 79 -12-12-13 000 42 28 06 -22.9 -22.9 29.51 6 6 175 149 000 126 65 77 -12-13-13 000 43 28 07 -24.1 -24.1 29.50 6 6 186 159 001 128 70 79 -12-13-13 000 44 28 08 -25.2 -25.2 29.49 6 10 191 165 002 129 68 77 -13-13-14 000 45 28 09 -24.6 -24.6 29.47 6 11 195 169 001 128 64 71 -12-12-14 000 46 28 10 -23.3 -23.3 29.45 5 14 210 184 000 127 64 66 -11-12-13 000 47 28 11 -22.9 -22.9 29.44 6 14 215 189 001 126 63 64 -11-12-13 000 48 28 12 -21.7 -21.7 29.43 7 15 223 196 001 125 61 63 -11-12-13 000 49 28 13 -20.6 -20.6 29.42 8 18 225 198 000 123 62 63 -12-12-13 000 50 28 14 -19.3 -19.3 29.40 10 22 229 202 000 122 64 64 -13-13-13 000 51 28 15 -18.3 -18.3 29.39 12 23 228 201 002 114 64 64 -13-13-14 000 52 28 16 -17.8 -17.8 29.37 13 24 234 208 000 111 69 58 -13-13-14 000 53 28 17 -17.4 -17.5 29.34 13 25 237 211 000 109 65 54 -14-14-14 000 54 28 18 -17.3 -17.4 29.32 13 24 242 216 000 110 64 49 -14-13-13 000 55 28 19 -16.5 -16.9 29.28 16 26 246 220 001 105 61 42 -14-13-13 000 56 28 20 -16.2 -16.9 29.26 17 29 246 220 001 102 64 35 -15-14-13 000 57 28 21 -16.4 -17.0 29.24 18 30 244 218 003 102 57 33 -16-14-13 000 58 28 22 -16.9 -17.1 29.22 17 29 238 212 002 108 52 30 -18-14-12 000 59 28 23 -17.4 -17.4 29.19 16 27 237 211 001 111 49 27 -18-15-12 000 60 29 00 -17.6 -17.6 29.16 16 26 236 210 000 113 48 26 -18-14-12 000 61 29 01 -17.8 -17.8 29.13 16 25 236 210 002 116 47 25 -18-14-11 000 62 29 02 -18.0 -18.0 29.11 15 25 232 206 004 119 51 23 -19-14-12 000 63 29 03 -18.5 -18.5 29.09 15 25 227 201 -002 121 54 23 -18-15-13 000 64 29 04 -18.9 -18.9 29.07 14 24 230 204 -001 121 58 23 -19-15-14 000 65 29 05 -18.7 -18.7 29.05 16 25 231 205 001 121 63 25 -19-16-14 000 66 29 06 -21.7 -21.7 29.05 9 22 199 173 003 125 70 27 -20-16-15 000 67 29 07 -26.5 -26.5 29.05 5 15 154 128 001 131 79 28 -20-17-15 000 68 29 08 -28.7 -28.7 29.05 4 4 156 129 000 134 77 32 -19-18-17 000 69 29 09 -31.5 -31.5 29.04 4 4 129 103 002 138 43 43 -18-18-18 001 70 29 10 -32.1 -32.1 29.05 6 12 121 95 000 139 47 45 -18-19-19 001 71 29 11 -30.0 -30.0 29.06 6 9 105 79 000 136 45 36 -20-20-20 001 72 29 12 -28.9 -28.9 29.07 8 15 101 75 003 135 59 28 -21-22-22 001 73 29 13 -28.4 -28.4 29.08 12 24 103 77 002 134116 29 -27-25-24 001 74 29 14 -31.4 -31.4 29.10 15 35 94 68 002 139 97 38 -29-25-23 001 75 29 15 -27.8 -27.8 29.09 17 33 82 56 002 134104 43 -25-24-24 002 76 29 16 -29.4 -29.4 29.10 18 33 93 67 000 136105 44 -26-25-24 002 77 29 17 -27.2 -27.2 29.11 21 35 91 64 002 132107 47 -26-26-25 002 78 29 18 -24.6 -24.6 29.12 23 36 85 58 000 125110 59 -26-26-25 001 79 29 19 -24.3 -24.3 29.13 24 35 84 57 001 120116 56 -27-27-25 000 80 29 20 -24.6 -24.6 29.14 25 33 79 53 000 125111 77 -28-25-26 000 81 29 21 -23.8 -23.8 29.15 25 35 77 50 -001 119 95100 -27-25-25 001 82 29 22 -24.8 -24.8 29.16 22 33 87 61 000 124100 98 -27-26-25 000 83 29 23 -24.2 -24.2 29.16 24 36 89 63 000 105 99 96 -26-26-27 000 84 30 00 -24.4 -24.4 29.17 23 36 86 60 002 109100 90 -27-26-27 000 85 30 01 -24.8 -24.8 29.18 25 35 79 53 000 122112106 -28-27-24 000 86 30 02 -25.1 -25.1 29.19 25 34 79 53 000 121114113 -28-27-24 000 87 30 03 -24.8 -24.8 29.19 24 33 80 54 000 119104112 -27-27-25 000 88 30 04 -25.0 -25.0 29.20 22 32 80 54 000 118100109 -26-26-26 000 89 30 05 -25.2 -25.2 29.20 21 31 78 52 001 117 96107 -26-26-26 000 90 30 06 -25.5 -25.5 29.21 20 28 75 49 000 121 97108 -26-26-26 000 91 30 07 -25.8 -25.8 29.21 18 27 74 48 001 128 96104 -26-26-26 000 92 30 08 -25.9 -25.9 29.20 17 24 75 49 001 131 95102 -26-26-26 000 93 30 09 -25.9 -25.9 29.20 15 22 75 49 001 131 92 99 -25-26-26 000 94 30 10 -25.9 -25.9 29.20 14 18 75 49 001 131 89 99 -25-25-26 000 95 30 11 -26.3 -26.3 29.20 12 16 77 51 001 131 86 98 -25-25-25 000 96 30 12 -26.2 -26.2 29.20 11 16 80 54 000 131 85 90 -25-25-25 000 97 30 13 -27.5 -27.5 29.19 10 15 86 60 000 133 78 80 -25-25-25 001 98 30 14 -30.0 -30.0 29.18 9 15 96 69 000 136 46 71 -25-24-25 001 99 30 15 -30.0 -30.0 29.17 8 16 97 71 000 136 38 66 -25-24-24 001 100 30 16 -28.3 -28.3 29.16 8 13 93 67 000 134 41 63 -25-24-24 000 101 30 17 -28.0 -28.0 29.16 7 11 96 70 000 133 48 59 -25-24-24 000 102 30 18 -28.1 -28.1 29.14 6 8 99 73 000 133 51 55 -25-24-23 000 103 30 19 -28.4 -28.4 29.13 5 6 117 91 000 133 50 54 -24-23-23 000 104 30 20 -29.9 -29.9 29.12 5 5 133 107 000 136 45 52 -24-23-23 000 105 30 21 -29.1 -29.1 29.11 4 4 141 114 001 134 37 51 -24-23-23 000 106 30 22 -27.8 -27.8 29.10 4 4 165 139 000 133 34 49 -24-23-22 000 107 30 23 -26.7 -26.7 29.10 4 4 201 175 000 131 35 48 -24-23-22 000 108 31 00 -25.0 -25.0 29.09 5 5 218 192 000 129 35 46 -23-22-22 000 109 31 01 -23.5 -23.5 29.08 7 8 224 198 000 109 36 45 -23-22-22 000 110 31 02 -22.6 -23.6 29.07 8 11 232 206 000 94 41 43 -23-22-22 000 111 31 03 -21.3 -21.3 29.06 10 14 235 209 000 112 41 41 -23-22-22 000 112 31 04 -20.1 -20.1 29.06 12 16 233 207 000 107 44 42 -22-22-22 000 113 31 05 -19.8 -20.3 29.06 12 16 233 207 000 102 40 62 -22-22-21 000 114 31 06 -19.5 -20.1 29.06 13 17 238 212 000 100 51 86 -22-22-21 000 115 31 07 -19.4 -19.6 29.06 14 18 240 213 -001 104 77 94 -22-22-21 000 116 31 08 -19.8 -19.8 29.07 15 19 241 215 002 110 82 92 -22-22-21 000 117 31 09 -20.8 -20.8 29.07 15 21 243 216 001 124 84 88 -23-22-21 000 118 31 10 -21.3 -21.3 29.08 15 22 242 215 000 125 80 85 -23-22-21 000 119 31 11 -21.4 -21.4 29.08 14 21 243 217 -001 125 79 81 -23-22-21 000 120 31 12 -21.2 -21.2 29.09 14 20 247 221 000 124 79 79 -23-22-21 000 * 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.