Halley site lat/lon = (-75.5560,-25.6200) cell lat/lon = (-75.5669,-25.5697) Forecast initialized at 2025-09-19/12 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 19 12 -21.8 -24.6 28.83 18 19 71 45 000 97100100 -22-22-22 000 1 19 13 -22.4 -24.8 28.88 19 30 72 47 -002 101102107 -22-22-22 000 2 19 14 -22.5 -24.8 28.93 22 32 73 48 -001 101105112 -23-22-22 000 3 19 15 -22.7 -25.2 28.95 23 33 73 48 -002 100107113 -23-23-23 000 4 19 16 -22.6 -25.1 28.98 23 34 73 47 -001 100108113 -23-23-22 000 5 19 17 -22.9 -25.3 29.04 24 34 72 46 001 100109116 -23-22-23 000 6 19 18 -23.9 -25.7 29.06 22 34 72 46 000 108109119 -24-22-23 000 7 19 19 -24.5 -26.0 29.08 21 34 71 45 000 113111117 -24-23-23 000 8 19 20 -24.6 -26.0 29.11 20 34 69 44 -001 114111106 -24-23-23 000 9 19 21 -23.1 -25.8 29.13 20 31 69 43 -001 98100 99 -23-24-23 002 10 19 22 -21.9 -24.8 29.14 21 30 70 45 -001 95 99101 -23-23-23 011 11 19 23 -21.2 -24.0 29.15 21 31 72 46 000 95101101 -22-23-22 014 12 20 00 -20.3 -23.0 29.15 21 31 73 48 -001 95101101 -21-22-21 015 13 20 01 -19.4 -22.0 29.14 20 33 70 45 000 94100102 -20-20-20 011 14 20 02 -18.3 -20.7 29.13 18 31 71 45 -001 97 98102 -18-19-20 007 15 20 03 -17.7 -20.0 29.13 18 31 71 45 000 96100100 -18-19-19 006 16 20 04 -16.6 -18.8 29.14 16 30 64 39 000 97100101 -16-17-18 007 17 20 05 -16.9 -18.3 29.13 14 27 76 51 002 105 98101 -16-16-18 004 18 20 06 -17.7 -18.8 29.11 14 27 78 53 002 110101100 -16-16-17 001 19 20 07 -17.8 -19.4 29.09 12 26 74 49 001 105102101 -14-16-17 002 20 20 08 -19.5 -20.5 29.07 12 28 79 54 002 114 96 99 -14-15-16 001 21 20 09 -19.5 -20.5 29.05 9 24 79 54 001 114 98 97 -13-14-16 001 22 20 10 -20.6 -21.2 29.03 7 20 91 66 003 121 97 95 -12-14-15 000 23 20 11 -20.3 -20.9 29.00 8 18 103 78 002 121 91 95 -12-13-14 000 24 20 12 -20.3 -20.9 28.97 7 17 107 82 002 121 83 96 -12-13-14 000 25 20 13 -20.1 -20.9 28.95 6 15 114 89 000 119 79 93 -11-12-13 000 26 20 14 -19.2 -20.2 28.93 5 14 128 103 000 116 67 93 -11-11-12 000 27 20 15 -16.9 -18.6 28.90 5 17 139 114 -001 102 72 85 -10-10-11 000 28 20 16 -14.6 -16.9 28.86 4 19 133 107 000 94 84106 -9-11-11 002 29 20 17 -13.4 -15.5 28.83 5 25 139 114 -002 94 93 97 -9 -9-11 005 30 20 18 -11.6 -12.6 28.83 10 23 95 70 -003 104102 94 -10-10-11 002 31 20 19 -10.1 -10.7 28.82 12 25 82 56 000 106 84 92 -9-10-11 007 32 20 20 -9.2 -10.3 28.81 15 27 78 53 -001 100100 98 -9-10-11 009 33 20 21 -9.2 -10.4 28.81 15 27 76 51 -002 100104109 -9-10-11 018 34 20 22 -9.4 -10.7 28.80 17 30 76 50 000 98106112 -10-10-11 012 35 20 23 -9.5 -10.9 28.79 19 32 76 51 -002 97 98107 -10-10-11 010 36 21 00 -9.6 -11.1 28.79 21 34 80 54 -003 96 98109 -10-10-11 014 37 21 01 -9.7 -11.3 28.78 22 34 83 58 000 96101113 -10-11-12 008 38 21 02 -9.4 -11.1 28.77 23 34 82 57 -005 94104111 -10-11-12 023 39 21 03 -9.8 -11.8 28.77 23 35 71 46 -002 92105117 -10-12-13 024 40 21 04 -10.4 -12.5 28.77 24 35 71 45 -005 91106118 -11-12-14 008 41 21 05 -10.9 -12.8 28.78 22 32 66 40 -006 94105112 -12-13-14 023 42 21 06 -11.2 -13.0 28.83 20 30 54 28 -009 96111112 -12-13-13 011 43 21 07 -11.5 -12.4 28.87 15 23 46 20 -007 105113104 -12-12-13 001 44 21 08 -14.5 -14.8 28.93 17 22 46 20 -005 115112107 -15-13-14 000 45 21 09 -16.8 -17.1 28.98 15 21 50 25 -005 117116109 -18-15-14 000 46 21 10 -17.4 -17.8 29.01 12 19 51 26 -001 118117108 -18-16-15 000 47 21 11 -16.7 -17.0 29.03 11 19 55 30 000 117118105 -17-17-15 000 48 21 12 -14.9 -16.0 29.04 11 19 56 30 -001 106117105 -16-16-15 008 49 21 13 -13.7 -15.7 29.05 12 18 67 41 001 96108105 -15-16-14 011 50 21 14 -13.7 -15.5 29.05 13 23 72 46 001 97102109 -14-14-15 008 51 21 15 -12.9 -14.7 29.05 12 20 66 41 000 98104116 -13-13-14 007 52 21 16 -11.0 -13.0 29.05 17 26 74 48 000 93105120 -12-13-14 004 53 21 17 -11.1 -13.1 29.05 18 27 82 56 000 93 99119 -12-13-14 002 54 21 18 -11.6 -13.8 29.03 16 25 86 60 001 92 86118 -12-12-14 002 55 21 19 -13.1 -15.6 29.00 13 25 90 65 001 90 94109 -12-13-14 000 56 21 20 -16.2 -17.7 28.97 10 25 96 70 002 103 84 88 -11-12-13 000 57 21 21 -16.7 -17.6 28.94 10 34 103 77 003 111 62 94 -9 -9-10 000 58 21 22 -14.1 -16.8 28.90 10 35 113 87 002 89 50 83 -9 -8 -9 000 59 21 23 -10.9 -14.6 28.87 17 41 98 72 001 78 87 89 -9 -9 -9 000 60 22 00 -8.2 -10.1 28.83 23 42 95 70 000 92 92 99 -8 -8 -9 005 61 22 01 -6.8 -8.8 28.80 28 43 88 63 000 90 97 97 -7 -8 -9 013 62 22 02 -6.5 -8.1 28.77 29 43 89 63 -001 93 98 97 -7 -8 -9 039 63 22 03 -6.3 -8.0 28.75 30 43 89 64 -003 92 98104 -7 -8 -9 053 64 22 04 -6.3 -8.9 28.73 28 42 87 61 -002 84 93110 -7 -8 -9 023 65 22 05 -6.3 -9.3 28.71 28 43 85 59 -003 80 88111 -7 -8 -9 003 66 22 06 -6.5 -9.6 28.69 28 43 81 56 -002 80 87107 -7 -8 -9 000 67 22 07 -6.8 -9.7 28.68 27 43 77 52 -001 82 90103 -7 -8-10 001 68 22 08 -7.0 -9.3 28.67 27 41 74 48 001 86 96 99 -7 -9-10 008 69 22 09 -7.1 -9.0 28.65 26 39 73 47 -002 90 99 99 -8 -9-10 022 70 22 10 -7.0 -8.6 28.64 25 37 72 47 -004 92101103 -8 -9-10 019 71 22 11 -6.9 -8.5 28.62 24 36 69 43 000 92102 99 -7 -9-10 021 72 22 12 -6.9 -8.5 28.61 21 34 66 40 002 93102 94 -7 -9-10 009 73 22 13 -6.6 -8.2 28.60 19 33 63 37 -004 93101 98 -7 -8 -9 006 74 22 14 -6.7 -8.4 28.60 17 31 59 34 -005 92 97106 -7 -8 -9 003 75 22 15 -6.7 -8.1 28.59 13 27 55 29 -002 94102106 -7 -8 -9 006 76 22 16 -7.4 -8.3 28.60 11 26 49 24 -001 99100 89 -7 -8 -9 004 77 22 17 -7.7 -8.5 28.61 12 26 47 21 -002 101104 91 -7 -8-10 000 78 22 18 -7.5 -8.4 28.62 12 23 47 22 -003 99105 98 -7 -9-10 001 79 22 19 -7.3 -8.5 28.64 13 21 51 25 -003 97103103 -8 -9-10 018 80 22 20 -7.5 -8.5 28.64 10 18 38 13 -003 98 99109 -7 -8 -9 031 81 22 21 -7.9 -8.7 28.65 7 14 42 16 -002 101103100 -7 -8 -9 032 82 22 22 -8.2 -8.9 28.66 7 21 43 18 -002 102 99 99 -8 -8 -9 018 83 22 23 -8.6 -9.4 28.68 8 21 34 8 -002 102105108 -8 -8 -9 016 84 23 00 -9.1 -10.3 28.69 6 23 38 13 -001 100107108 -8 -8-10 037 85 23 01 -8.9 -10.0 28.70 9 29 44 19 -003 99104103 -8 -9-10 029 86 23 02 -9.0 -9.9 28.71 9 26 37 12 -004 102103 96 -8 -9-10 011 87 23 03 -9.5 -10.3 28.71 7 23 38 12 -003 103106105 -8 -9-10 007 88 23 04 -9.0 -10.0 28.72 7 23 49 23 -004 101108110 -8 -9-10 030 89 23 05 -7.9 -8.9 28.72 13 26 50 24 -005 99106106 -8 -9-10 039 90 23 06 -8.5 -9.4 28.74 11 23 40 15 -002 102109114 -8-10-11 020 91 23 07 -9.4 -10.5 28.75 9 20 37 12 -002 100109111 -9-10-11 015 92 23 08 -9.9 -11.2 28.76 9 18 40 15 -004 99106107 -9-10-11 037 93 23 09 -10.6 -12.1 28.78 9 21 39 13 -004 98109106 -10-10-11 027 94 23 10 -11.0 -12.7 28.81 11 23 38 12 -004 97107106 -11-11-12 024 95 23 11 -11.6 -13.4 28.83 10 23 39 14 -004 96103106 -11-11-12 034 96 23 12 -11.7 -13.4 28.85 11 23 38 13 -005 96103105 -11-11-12 030 97 23 13 -11.6 -13.4 28.87 11 22 34 8 -004 96103105 -12-11-12 025 98 23 14 -11.6 -13.4 28.89 10 22 32 7 -004 96102104 -12-11-12 022 99 23 15 -11.8 -13.7 28.91 10 21 26 0 -003 95102104 -12-11-12 021 100 23 16 -12.1 -14.0 28.93 9 20 24 359 -002 95101104 -13-12-12 023 101 23 17 -12.4 -14.3 28.95 8 20 25 0 -003 96100104 -13-12-12 024 102 23 18 -12.8 -14.7 28.97 8 20 27 1 -002 96100104 -13-12-12 018 103 23 19 -13.2 -15.1 29.00 7 16 26 1 -002 97100105 -13-12-12 017 104 23 20 -13.6 -15.4 29.02 6 9 24 359 -002 98101105 -14-12-12 022 105 23 21 -14.0 -15.7 29.04 5 8 28 2 -004 99102106 -14-13-13 026 106 23 22 -14.5 -16.2 29.07 4 7 37 11 -004 100103103 -15-14-14 033 107 23 23 -14.8 -16.5 29.09 3 5 28 2 002 99102105 -15-13-14 037 108 24 00 -16.1 -17.8 29.11 3 4 348 323 -001 102105105 -14-13-14 022 109 24 01 -18.1 -19.4 29.13 5 6 337 311 -001 108111111 -15-14-15 008 110 24 02 -16.8 -18.0 29.16 5 9 355 329 -002 107108114 -16-15-15 010 111 24 03 -16.5 -16.8 29.20 8 10 19 354 -003 117111 97 -17-17-16 001 112 24 04 -16.5 -16.9 29.24 13 15 41 16 -003 117120 91 -17-19-17 000 113 24 05 -21.3 -21.6 29.30 15 17 65 40 000 123122 98 -22-20-18 000 114 24 06 -21.8 -22.2 29.31 12 18 57 32 001 123118111 -22-19-18 000 115 24 07 -21.4 -21.8 29.32 11 18 51 26 000 123110104 -22-18-18 000 116 24 08 -21.3 -21.7 29.33 10 19 43 17 001 123105 96 -22-18-18 000 117 24 09 -21.3 -21.6 29.34 8 15 31 6 -003 123105 90 -21-17-18 000 118 24 10 -21.3 -21.6 29.35 5 10 42 17 -003 123111 88 -21-18-18 000 119 24 11 -21.2 -21.5 29.36 5 7 65 39 000 123109 96 -21-18-17 000 120 24 12 -21.1 -21.3 29.37 4 7 62 36 000 123100108 -21-17-17 000 * 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.