Halley site lat/lon = (-75.4330,-26.2170) cell lat/lon = (-75.4273,-26.2060) Forecast initialized at 2025-07-28/00 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 28 00 -21.6 -24.5 29.43 6 8 125 99 000 91 83 90 -12-11-11 000 1 28 01 -16.7 -16.7 29.42 6 7 131 105 000 118 86 88 -11-10-11 000 2 28 02 -20.9 -20.9 29.41 7 9 153 126 -001 124 86 86 -11-10-11 000 3 28 03 -21.5 -21.5 29.43 6 8 153 127 -002 125 83 83 -10-10-10 000 4 28 04 -22.2 -22.2 29.46 7 7 163 137 000 126 83 84 -10-10-10 000 5 28 05 -21.3 -21.3 29.46 7 9 146 119 001 125 82 84 -10-10-10 000 6 28 06 -19.9 -19.9 29.46 6 9 138 111 002 123 73 90 -9-10-11 000 7 28 07 -20.5 -20.5 29.43 5 5 141 114 000 123 58 93 -10-10-10 000 8 28 08 -20.1 -20.1 29.47 5 5 145 119 001 123 62 87 -10-10-10 000 9 28 09 -20.2 -20.2 29.45 5 5 157 131 002 123 68 86 -10-10-10 000 10 28 10 -19.9 -19.9 29.44 5 5 169 143 001 123 71 81 -10-11-10 000 11 28 11 -21.0 -21.0 29.43 6 6 178 152 001 124 60 74 -11-10-10 000 12 28 12 -21.1 -21.1 29.44 5 5 183 157 000 124 52 71 -11-10-10 000 13 28 13 -21.1 -21.1 29.43 5 6 198 172 002 124 65 73 -10-10-10 000 14 28 14 -21.3 -21.3 29.42 4 8 207 181 001 124 83 71 -10-10-10 000 15 28 15 -21.4 -21.4 29.41 5 11 215 189 000 124 76 68 -10-10-10 000 16 28 16 -21.4 -21.4 29.41 6 13 214 188 000 125 88 66 -10-10-10 000 17 28 17 -20.8 -20.8 29.41 6 18 219 193 -001 124 72 63 -11-10-10 000 18 28 18 -19.6 -19.6 29.39 6 17 221 195 000 122 74 60 -11-10-10 000 19 28 19 -18.9 -18.9 29.38 7 17 226 200 001 121 71 61 -11-10-10 000 20 28 20 -18.6 -18.6 29.36 8 18 226 200 001 121 74 61 -12-11-11 000 21 28 21 -17.7 -17.7 29.34 9 20 229 203 001 120 77 63 -12-11-11 000 22 28 22 -16.7 -16.7 29.33 11 21 235 209 001 119 73 61 -12-11-11 000 23 28 23 -16.6 -16.6 29.32 12 21 237 211 000 119 68 57 -13-11-11 000 24 29 00 -16.4 -16.4 29.30 12 21 240 214 000 118 65 54 -14-11-11 000 25 29 01 -16.7 -16.7 29.29 12 21 238 212 000 119 65 46 -16-12-11 000 26 29 02 -17.1 -17.1 29.28 13 24 234 208 000 119 62 40 -17-13-11 000 27 29 03 -17.6 -17.6 29.26 13 22 229 203 000 120 56 35 -17-14-12 000 28 29 04 -18.1 -18.1 29.23 11 20 227 201 002 121 51 31 -17-14-12 000 29 29 05 -18.1 -18.1 29.22 12 21 231 205 001 121 49 28 -17-14-13 000 30 29 06 -18.0 -18.0 29.20 12 22 232 206 001 121 49 25 -18-14-12 000 31 29 07 -18.1 -18.1 29.17 12 21 231 205 001 121 45 21 -18-15-12 000 32 29 08 -18.5 -18.5 29.16 12 20 232 205 002 121 51 20 -18-15-13 000 33 29 09 -18.9 -18.9 29.15 12 20 228 202 002 122 55 20 -19-16-13 000 34 29 10 -21.2 -21.2 29.14 9 18 210 184 001 125 58 21 -19-16-14 000 35 29 11 -26.7 -26.7 29.14 7 16 175 148 -001 132 73 21 -19-18-15 000 36 29 12 -29.6 -29.6 29.13 6 13 133 107 -001 136 88 22 -19-19-16 001 37 29 13 -29.5 -29.5 29.12 6 8 111 84 -001 136 85 22 -20-19-16 001 38 29 14 -29.5 -29.5 29.12 7 8 106 80 -002 136 83 23 -22-19-17 001 39 29 15 -30.2 -30.2 29.12 6 7 107 81 000 137 73 24 -21-20-18 002 40 29 16 -27.8 -27.8 29.12 4 16 90 63 000 133 46 30 -20-19-20 002 41 29 17 -31.0 -31.0 29.13 6 14 134 107 000 138 56 44 -20-20-20 002 42 29 18 -31.7 -31.7 29.13 7 8 119 93 000 139 68 50 -21-21-21 002 43 29 19 -30.4 -30.4 29.13 8 12 124 97 000 137 89 47 -22-23-22 002 44 29 20 -31.0 -31.0 29.12 13 18 108 81 000 139113 39 -27-26-22 002 45 29 21 -32.0 -32.0 29.12 12 21 92 66 000 140 93 39 -29-24-22 003 46 29 22 -26.8 -26.8 29.11 11 23 69 43 000 132 59 60 -26-21-21 002 47 29 23 -30.2 -30.2 29.10 10 24 100 74 -001 137 82 46 -24-24-22 003 48 30 00 -30.3 -30.3 29.09 12 26 103 76 001 138119 40 -25-25-24 003 49 30 01 -29.9 -29.9 29.09 15 29 96 70 000 137108 42 -25-24-24 003 50 30 02 -26.2 -26.2 29.07 20 35 82 56 -001 132113 53 -27-25-24 003 51 30 03 -23.5 -23.5 29.05 22 34 79 53 000 129115 66 -26-24-23 002 52 30 04 -23.0 -23.0 29.05 22 31 76 50 001 128119 57 -26-24-24 000 53 30 05 -22.5 -22.5 29.05 23 34 77 51 000 123 98 75 -26-24-24 000 54 30 06 -23.4 -23.4 29.04 22 33 82 55 000 128 93 94 -26-24-24 000 55 30 07 -23.7 -23.7 29.03 24 36 78 52 000 129 91 95 -27-24-25 000 56 30 08 -22.6 -22.6 29.03 23 34 75 48 000 126103106 -25-25-25 000 57 30 09 -24.6 -24.6 29.03 22 34 80 54 000 130104108 -27-25-25 000 58 30 10 -25.3 -25.3 29.03 24 36 80 54 000 131107119 -27-26-24 000 59 30 11 -25.2 -25.2 29.03 24 33 79 53 000 131110123 -28-25-24 000 60 30 12 -24.6 -24.6 29.03 24 30 74 48 000 130112118 -28-26-24 002 61 30 13 -24.4 -24.4 29.03 21 30 77 51 000 130 99117 -27-27-26 003 62 30 14 -25.0 -25.0 29.03 22 31 81 55 000 128 92113 -26-26-27 000 63 30 15 -25.0 -25.0 29.03 22 31 82 56 001 120 86112 -26-26-26 000 64 30 16 -25.5 -25.5 29.02 22 32 82 56 -001 127 89107 -26-26-27 000 65 30 17 -25.2 -25.2 29.02 23 31 84 58 000 124108101 -27-27-27 000 66 30 18 -25.3 -25.3 29.02 21 29 84 58 000 130109100 -27-27-27 000 67 30 19 -25.8 -25.8 29.02 21 29 88 61 000 132109105 -28-28-27 000 68 30 20 -25.6 -25.6 29.02 21 30 86 60 000 131110109 -28-28-27 000 69 30 21 -25.7 -25.7 29.02 22 30 84 58 001 132109112 -28-28-27 000 70 30 22 -25.8 -25.8 29.03 21 29 84 58 000 132107115 -27-28-27 000 71 30 23 -25.9 -25.9 29.04 20 28 82 56 000 132107114 -27-28-28 000 72 31 00 -26.4 -26.4 29.05 19 26 83 56 000 132108115 -28-28-28 000 73 31 01 -26.6 -26.6 29.06 19 26 81 55 000 133109117 -28-28-28 000 74 31 02 -26.5 -26.5 29.07 18 25 79 53 000 133107118 -28-28-28 000 75 31 03 -26.6 -26.6 29.09 18 25 78 52 000 133104118 -28-28-28 001 76 31 04 -26.7 -26.7 29.11 17 24 77 51 000 133103117 -28-28-28 001 77 31 05 -26.6 -26.6 29.13 16 23 78 51 000 133104114 -28-27-28 002 78 31 06 -26.7 -26.7 29.15 15 22 80 54 000 133101114 -28-27-28 002 79 31 07 -26.8 -26.8 29.17 15 21 80 54 000 133 96113 -28-27-27 002 80 31 08 -26.0 -26.0 29.19 15 21 75 49 000 132 97112 -29-27-27 002 81 31 09 -27.9 -27.9 29.21 13 20 85 58 000 134 89110 -27-28-27 001 82 31 10 -28.5 -28.5 29.23 13 20 85 59 000 135 90110 -26-27-28 002 83 31 11 -28.0 -28.0 29.25 14 21 81 55 000 134 88112 -26-26-27 001 84 31 12 -28.0 -28.0 29.26 14 20 85 59 000 135 88114 -26-26-27 001 85 31 13 -29.4 -29.4 29.28 11 15 93 67 000 136 89113 -25-26-27 002 86 31 14 -29.9 -29.9 29.29 10 14 91 65 000 137 92108 -25-26-27 002 87 31 15 -29.5 -29.5 29.30 11 17 91 65 000 136 89110 -26-26-26 002 88 31 16 -29.2 -29.2 29.31 10 16 92 66 000 136 90109 -26-26-26 002 89 31 17 -29.1 -29.1 29.32 10 15 92 65 000 136 88108 -26-26-26 002 90 31 18 -27.6 -27.6 29.33 10 16 86 60 000 134 94109 -26-26-26 002 91 31 19 -26.8 -26.8 29.33 9 14 87 61 000 132 98108 -26-26-26 001 92 31 20 -25.7 -25.7 29.34 9 13 85 59 000 131116108 -25-26-26 002 93 31 21 -25.0 -25.0 29.35 9 11 84 58 000 130107110 -26-26-26 003 94 31 22 -24.8 -24.8 29.36 9 12 84 58 -001 129 81107 -26-26-26 001 95 31 23 -25.2 -25.2 29.36 9 12 89 63 -001 130 77110 -25-26-26 000 96 01 00 -25.5 -25.5 29.37 9 12 90 63 000 130 76114 -24-25-26 000 97 01 01 -25.1 -25.1 29.37 9 12 88 61 -001 130 82111 -24-25-25 000 98 01 02 -25.2 -25.2 29.38 9 10 89 63 000 130 87114 -24-25-25 000 99 01 03 -25.7 -25.7 29.38 8 9 94 68 000 131 92111 -24-25-25 000 100 01 04 -25.5 -25.5 29.37 8 9 96 69 000 130 91104 -24-25-25 000 101 01 05 -26.0 -26.0 29.36 8 9 99 73 000 131 86101 -24-25-25 002 102 01 06 -27.0 -27.0 29.35 7 8 98 72 -001 132 80100 -24-25-25 001 103 01 07 -27.5 -27.5 29.36 7 7 96 70 000 133 79103 -24-24-25 001 104 01 08 -28.0 -28.0 29.36 7 7 101 75 000 134 84104 -24-24-25 001 105 01 09 -28.7 -28.7 29.33 9 11 100 74 001 135 83 98 -24-24-24 001 106 01 10 -28.9 -28.9 29.32 9 12 100 74 002 135 93 97 -24-24-24 001 107 01 11 -27.9 -27.9 29.31 8 11 93 67 000 134101103 -24-24-24 001 108 01 12 -26.5 -26.5 29.29 9 12 86 60 000 132107102 -25-24-24 002 109 01 13 -25.3 -25.3 29.27 10 13 82 56 001 130122110 -25-25-24 002 110 01 14 -24.8 -24.8 29.26 11 14 83 56 -001 130127114 -25-25-25 003 111 01 15 -24.9 -24.9 29.24 12 15 84 58 000 130122110 -25-25-25 003 112 01 16 -24.6 -24.6 29.22 13 18 82 56 000 129110 89 -25-25-24 002 113 01 17 -24.0 -24.0 29.19 15 21 77 50 000 129106 78 -25-25-24 002 114 01 18 -23.4 -23.4 29.17 16 22 73 47 -001 128112 83 -25-25-25 001 115 01 19 -22.8 -22.8 29.14 16 23 72 46 -001 127117 84 -25-26-25 002 116 01 20 -22.7 -22.7 29.12 18 23 73 47 -002 127112 87 -25-25-25 004 117 01 21 -22.5 -22.5 29.10 19 24 70 44 -003 125112102 -25-26-26 007 118 01 22 -22.1 -22.1 29.08 20 24 73 47 -002 118112103 -25-26-26 014 119 01 23 -23.0 -23.0 29.06 20 24 75 48 -002 119108103 -26-26-26 011 120 02 00 -22.9 -22.9 29.04 19 23 75 49 -003 114104106 -26-26-26 014 * 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.