Halley site lat/lon = (-75.5560,-25.6200) cell lat/lon = (-75.5669,-25.5697) Forecast initialized at 2026-02-20/12 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 20 12 -8.8 -11.1 29.21 13 16 243 218 000 85 93 46 -9-11-11 000 1 20 13 -8.6 -10.9 29.20 13 22 242 217 001 88 96 49 -9-11-12 000 2 20 14 -8.7 -11.1 29.20 14 22 240 214 000 87 97 49 -9-11-12 000 3 20 15 -8.7 -11.1 29.22 13 21 241 216 000 87 97 47 -9-11-12 000 4 20 16 -8.9 -11.3 29.23 12 21 245 219 000 88 97 46 -9-11-12 000 5 20 17 -9.4 -11.7 29.23 11 20 249 224 000 89 96 45 -10-11-12 000 6 20 18 -10.2 -12.2 29.23 9 20 252 227 000 92 98 43 -10-11-12 000 7 20 19 -11.5 -13.0 29.23 8 19 261 236 001 99 99 40 -10-11-12 000 8 20 20 -13.1 -13.7 29.24 7 18 268 243 002 110 99 38 -10-11-13 000 9 20 21 -14.2 -14.7 29.24 7 17 270 245 001 113 96 37 -10-11-13 000 10 20 22 -16.0 -16.5 29.25 6 15 277 251 001 116 94 37 -10-11-12 000 11 20 23 -18.7 -19.3 29.25 4 8 279 253 001 119 94 37 -10-11-12 000 12 21 00 -20.7 -20.9 29.25 1 4 274 248 000 122 97 35 -10-10-12 000 13 21 01 -19.8 -19.9 29.27 0 1 248 223 000 121 97 35 -10-10-12 000 14 21 02 -19.9 -20.2 29.27 0 3 147 122 000 121101 34 -10-10-12 000 15 21 03 -20.0 -20.6 29.28 1 3 146 121 001 121101 34 -10-11-12 000 16 21 04 -20.9 -21.8 29.29 3 3 158 132 000 122104 34 -11-11-12 000 17 21 05 -21.9 -22.3 29.30 3 4 153 128 001 123108 34 -12-12-13 000 18 21 06 -22.1 -22.3 29.31 3 4 153 128 000 124107 35 -12-12-13 000 19 21 07 -21.3 -21.7 29.32 3 6 139 113 000 123111 36 -12-13-13 000 20 21 08 -21.1 -21.8 29.33 2 8 125 99 000 122111 38 -12-13-14 000 21 21 09 -20.1 -20.6 29.34 2 9 121 95 000 121107 40 -12-13-14 000 22 21 10 -19.3 -19.9 29.35 2 8 97 72 000 120109 43 -12-13-14 000 23 21 11 -18.4 -19.2 29.35 3 9 88 63 000 113109 45 -12-13-14 000 24 21 12 -17.1 -18.1 29.36 4 10 79 54 000 109 98 47 -12-13-14 000 25 21 13 -15.6 -16.4 29.37 6 9 72 46 000 111 97 49 -12-13-14 000 26 21 14 -14.4 -15.3 29.38 6 10 70 44 000 108 93 52 -12-13-14 000 27 21 15 -13.7 -15.0 29.39 6 10 73 47 000 104 92 57 -12-13-14 000 28 21 16 -13.5 -15.0 29.39 6 9 77 51 000 101 91 61 -12-13-13 000 29 21 17 -13.8 -15.2 29.39 6 8 78 53 000 102 86 65 -12-12-13 000 30 21 18 -14.5 -15.5 29.40 6 10 78 52 000 107 83 71 -12-12-13 000 31 21 19 -15.3 -15.8 29.40 7 12 76 51 000 114 83 87 -12-12-13 000 32 21 20 -15.8 -16.2 29.40 7 13 79 53 000 116 86108 -12-12-12 000 33 21 21 -16.9 -17.3 29.39 7 15 84 58 000 117 86108 -12-12-11 000 34 21 22 -19.4 -19.8 29.38 5 13 93 67 000 120 92111 -12-13-12 000 35 21 23 -21.3 -21.7 29.38 6 15 99 73 -001 123 97109 -12-13-13 000 36 22 00 -19.6 -20.0 29.38 8 20 86 60 000 121 94113 -13-13-13 000 37 22 01 -16.9 -18.5 29.38 13 26 78 52 000 103101112 -13-13-13 000 38 22 02 -15.9 -18.0 29.36 17 30 82 56 -001 97 99113 -13-13-13 001 39 22 03 -15.1 -17.5 29.33 22 35 88 62 -001 93104106 -13-14-12 001 40 22 04 -13.9 -16.2 29.31 23 36 87 61 000 93103105 -14-14-11 001 41 22 05 -13.4 -15.7 29.30 25 39 84 58 000 94108107 -14-14-12 006 42 22 06 -12.8 -14.6 29.27 28 41 83 58 000 96106107 -13-14-12 011 43 22 07 -12.9 -15.2 29.24 31 43 86 60 -001 92 99109 -14-14-12 017 44 22 08 -12.7 -15.2 29.21 31 46 85 59 -003 90100107 -13-13-11 011 45 22 09 -12.3 -14.5 29.19 32 45 81 56 -003 93101110 -13-13-12 020 46 22 10 -11.7 -13.7 29.15 33 45 81 55 000 94101103 -12-13-12 051 47 22 11 -10.9 -12.9 29.12 34 46 79 54 -001 93102102 -12-13-12 036 48 22 12 -10.0 -11.9 29.09 34 47 79 54 000 93104105 -11-12-12 036 49 22 13 -9.0 -10.9 29.06 35 48 79 54 -001 93103105 -10-11-11 051 50 22 14 -8.1 -9.9 29.01 35 49 78 53 001 93103105 -9-10-11 068 51 22 15 -7.2 -8.8 28.97 35 50 77 52 -003 93103104 -8 -9-10 089 52 22 16 -6.4 -7.9 28.92 37 52 77 51 -003 93103104 -7 -8 -9 126 53 22 17 -5.9 -7.3 28.86 39 55 79 53 -004 93102104 -7 -8 -9 128 54 22 18 -5.2 -6.6 28.81 40 56 76 51 -004 94102105 -6 -7 -8 156 55 22 19 -4.8 -6.1 28.77 39 56 74 48 -002 94102105 -5 -7 -8 184 56 22 20 -4.8 -6.1 28.74 40 57 73 48 000 93102104 -5 -6 -7 176 57 22 21 -4.7 -6.0 28.71 40 58 72 46 -001 93102103 -5 -6 -7 148 58 22 22 -4.8 -6.1 28.68 42 60 72 47 -001 92102101 -5 -6 -7 124 59 22 23 -4.8 -6.3 28.63 43 61 75 49 000 92101102 -5 -6 -7 116 60 23 00 -4.7 -6.2 28.58 43 60 76 50 004 92102109 -5 -6 -7 102 61 23 01 -4.1 -5.5 28.54 41 57 75 50 -005 92103109 -5 -6 -7 045 62 23 02 -3.6 -4.7 28.50 39 55 74 48 -004 93103108 -4 -5 -6 124 63 23 03 -3.2 -4.4 28.47 36 51 69 43 -009 93104108 -4 -5 -6 097 64 23 04 -1.8 -3.0 28.48 22 31 20 355 -007 91100107 -2 -4 -5 055 65 23 05 -2.4 -3.4 28.52 26 39 39 13 -010 93103108 -3 -4 -5 037 66 23 06 -2.6 -3.6 28.55 27 40 40 15 -009 93102106 -3 -4 -5 064 67 23 07 -2.7 -3.7 28.58 28 40 42 16 -011 93102107 -3 -4 -5 095 68 23 08 -2.7 -4.1 28.61 28 40 43 18 -011 91102109 -3 -5 -6 073 69 23 09 -2.7 -4.0 28.62 28 40 47 21 -009 91102109 -3 -5 -6 025 70 23 10 -2.7 -4.1 28.64 28 39 50 24 -006 91101109 -3 -5 -6 020 71 23 11 -2.6 -4.0 28.65 27 38 51 26 -004 90101108 -3 -5 -6 010 72 23 12 -2.5 -3.8 28.66 27 37 54 29 -006 92102109 -3 -4 -6 012 73 23 13 -2.3 -3.4 28.66 28 39 55 30 -008 93104108 -3 -4 -5 029 74 23 14 -2.1 -3.0 28.67 26 36 54 28 -007 93104108 -3 -4 -5 033 75 23 15 -1.7 -2.9 28.67 26 36 48 23 -015 91102107 -2 -4 -5 039 76 23 16 -1.7 -2.9 28.67 24 35 48 22 -010 91102108 -2 -4 -5 017 77 23 17 -1.5 -2.6 28.67 23 34 45 20 -013 91101108 -2 -3 -5 032 78 23 18 -1.5 -2.6 28.68 23 33 43 17 -015 92102108 -2 -4 -5 052 79 23 19 -1.8 -2.8 28.70 21 31 47 21 -018 93101103 -3 -4 -5 053 80 23 20 -1.9 -2.9 28.71 21 31 53 27 -013 93102103 -3 -4 -5 052 81 23 21 -2.0 -3.0 28.72 20 30 60 34 -006 94104108 -3 -4 -5 026 82 23 22 -2.7 -3.5 28.72 22 30 67 41 -002 95104108 -3 -4 -5 024 83 23 23 -3.8 -5.0 28.73 30 42 65 39 -007 93104108 -4 -5 -5 039 84 24 00 -4.1 -5.4 28.74 28 39 64 38 -016 93103105 -5 -6 -5 021 85 24 01 -4.3 -5.4 28.75 26 37 65 40 -007 94103 99 -5 -5 -5 022 86 24 02 -4.4 -5.6 28.75 25 36 66 41 -008 95102102 -5 -5 -5 021 87 24 03 -4.8 -6.0 28.75 25 36 70 44 -008 95103106 -5 -5 -5 031 88 24 04 -5.0 -6.2 28.75 25 36 68 43 -008 95101 96 -6 -5 -5 042 89 24 05 -4.8 -5.9 28.75 24 35 71 45 -004 95103102 -5 -5 -5 025 90 24 06 -4.4 -5.5 28.75 23 33 64 38 -005 95106100 -5 -5 -6 037 91 24 07 -4.1 -5.1 28.76 22 31 60 35 -009 95106109 -5 -5 -6 025 92 24 08 -4.0 -5.1 28.77 24 36 61 35 -007 94103109 -5 -5 -6 040 93 24 09 -4.1 -5.1 28.78 21 30 63 37 -010 95104100 -5 -6 -7 014 94 24 10 -4.0 -5.0 28.79 21 29 63 37 -004 95102101 -5 -6 -7 008 95 24 11 -3.3 -4.6 28.80 22 30 57 31 -003 91101110 -4 -5 -7 016 96 24 12 -3.1 -4.4 28.80 22 31 56 31 -004 91102105 -4 -5 -7 029 97 24 13 -3.0 -4.2 28.81 22 29 53 28 -006 92103 98 -4 -5 -6 038 98 24 14 -2.8 -4.0 28.81 19 26 53 28 -003 93102104 -4 -5 -6 033 99 24 15 -2.7 -3.9 28.81 18 25 53 27 -003 92101102 -4 -5 -6 044 100 24 16 -2.6 -3.7 28.81 16 22 41 16 -003 93102107 -4 -5 -6 055 101 24 17 -3.2 -4.7 28.82 13 18 29 4 -002 90 94102 -4 -5 -6 041 102 24 18 -3.4 -4.7 28.83 13 20 39 13 -003 92 91 98 -4 -5 -6 021 103 24 19 -3.7 -5.2 28.83 14 20 36 10 -005 91 91 93 -4 -6 -7 014 104 24 20 -3.9 -5.0 28.83 12 18 39 13 -004 94 98 94 -5 -6 -7 027 105 24 21 -4.2 -5.1 28.83 12 18 41 15 -004 96103103 -5 -6 -7 022 106 24 22 -4.9 -6.0 28.84 14 22 47 22 -004 95101 96 -5 -6 -8 015 107 24 23 -5.8 -6.6 28.84 13 22 60 34 -002 99106105 -6 -7 -8 006 108 25 00 -5.4 -6.4 28.84 16 22 47 21 -002 97106 92 -6 -7 -8 010 109 25 01 -5.6 -6.6 28.85 14 20 52 26 -004 97101103 -6 -7 -8 010 110 25 02 -6.1 -7.1 28.84 15 21 59 33 -001 97 98 90 -6 -7 -8 010 111 25 03 -6.3 -7.4 28.84 15 21 57 32 -003 97107 92 -7 -7 -8 001 112 25 04 -6.3 -7.4 28.85 15 22 59 34 000 97104105 -7 -7 -8 007 113 25 05 -6.7 -8.0 28.85 17 24 63 37 000 96108101 -7 -8 -8 041 114 25 06 -6.9 -8.2 28.85 17 24 63 37 000 96107106 -8 -8 -9 012 115 25 07 -6.7 -8.0 28.86 15 21 62 37 -001 96108 88 -7 -8 -9 007 116 25 08 -8.0 -8.4 28.87 12 17 61 35 -001 105 96 91 -7 -8 -9 001 117 25 09 -6.5 -7.7 28.88 12 17 64 38 -002 97 99100 -7 -8 -9 005 118 25 10 -6.3 -7.6 28.89 16 23 64 38 000 95106 86 -7 -8 -9 001 119 25 11 -6.3 -7.7 28.89 15 21 70 45 000 94 96 92 -7 -8 -9 001 120 25 12 -6.3 -7.7 28.89 15 22 69 44 -001 94105 92 -7 -8 -9 000 * 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.