Halley site lat/lon = (-75.5560,-25.6200) cell lat/lon = (-75.5669,-25.5697) Forecast initialized at 2025-09-19/00 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 19 00 -21.9 -24.8 28.61 14 20 63 38 000 97 97 92 -19-19-19 000 1 19 01 -23.6 -24.1 28.61 12 25 62 36 000 124 97106 -19-19-19 000 2 19 02 -25.0 -25.6 28.61 11 23 58 32 000 127 96104 -19-19-19 000 3 19 03 -26.4 -27.0 28.59 9 23 54 28 000 128 97 97 -19-19-19 000 4 19 04 -27.5 -28.2 28.60 9 21 57 32 001 130 99 98 -19-19-19 000 5 19 05 -28.1 -28.7 28.63 9 21 48 22 000 131100100 -19-19-19 000 6 19 06 -28.8 -29.5 28.66 8 20 55 30 001 132102102 -20-20-20 000 7 19 07 -31.2 -31.9 28.67 7 19 82 56 004 135101103 -20-20-20 000 8 19 08 -31.1 -31.7 28.69 9 23 76 51 005 135 92105 -20-20-20 000 9 19 09 -30.6 -31.2 28.72 11 22 70 45 002 134 95108 -20-20-21 000 10 19 10 -29.7 -30.3 28.74 12 24 68 43 000 133100112 -21-21-21 000 11 19 11 -28.2 -28.7 28.79 14 25 66 40 000 131103114 -21-21-21 000 12 19 12 -26.9 -27.4 28.83 16 26 65 39 000 130107115 -21-21-21 000 13 19 13 -25.3 -25.7 28.85 18 27 62 37 000 128112118 -22-21-21 000 14 19 14 -23.9 -24.9 28.91 19 28 64 39 000 119118117 -23-21-22 000 15 19 15 -22.6 -24.9 28.94 20 30 67 41 000 102113109 -23-22-22 007 16 19 16 -21.8 -24.4 28.98 22 31 69 44 -001 97104103 -22-21-22 021 17 19 17 -21.8 -24.6 29.03 23 32 71 45 -002 96103104 -23-22-22 020 18 19 18 -21.9 -24.6 29.06 23 33 70 45 000 96109114 -23-23-22 016 19 19 19 -22.3 -24.5 29.08 23 33 70 45 002 103122124 -23-23-22 006 20 19 20 -21.4 -24.2 29.10 23 33 71 45 002 95103107 -22-23-22 009 21 19 21 -20.4 -23.1 29.12 23 34 72 46 002 94100103 -21-22-22 014 22 19 22 -19.4 -22.1 29.14 23 33 72 46 001 94101102 -20-21-21 019 23 19 23 -18.6 -21.2 29.14 22 33 73 47 -002 94101101 -19-20-21 019 24 20 00 -18.0 -20.6 29.14 21 32 75 49 -002 94100 99 -18-19-20 011 25 20 01 -17.4 -19.9 29.14 20 32 75 50 000 94 99101 -18-19-19 007 26 20 02 -16.8 -19.2 29.13 20 32 74 49 -001 95100100 -17-18-18 006 27 20 03 -16.0 -18.3 29.12 19 31 75 49 -002 96 99103 -16-17-17 004 28 20 04 -15.5 -17.7 29.10 18 31 79 54 -003 96 97 99 -15-16-17 002 29 20 05 -15.7 -17.5 29.09 18 31 82 57 -003 100 98 99 -15-15-16 002 30 20 06 -15.8 -17.7 29.08 17 30 80 54 -001 99 99111 -14-15-16 002 31 20 07 -15.8 -17.9 29.06 16 31 82 56 000 97 99103 -13-14-15 004 32 20 08 -16.3 -18.6 29.04 15 30 84 58 000 95 99105 -13-14-15 003 33 20 09 -15.1 -17.2 29.02 16 30 77 52 001 97103101 -13-14-15 010 34 20 10 -15.4 -17.5 29.00 14 26 78 52 001 96 93101 -13-13-14 006 35 20 11 -17.2 -19.0 28.98 10 21 86 60 004 101 88100 -13-13-14 001 36 20 12 -18.6 -19.8 28.95 6 17 80 54 000 111 82 75 -12-13-14 000 37 20 13 -18.8 -20.0 28.93 4 15 99 73 000 112 71 86 -11-12-13 000 38 20 14 -16.7 -18.6 28.90 4 15 109 83 -003 100 68 85 -11-11-12 000 39 20 15 -14.5 -16.9 28.88 5 18 78 52 000 93 87104 -11-11-12 001 40 20 16 -12.5 -14.2 28.85 4 9 79 53 000 98 94 98 -11-10-11 019 41 20 17 -11.9 -13.4 28.84 5 18 103 78 -006 99103112 -10-11-12 015 42 20 18 -10.7 -11.7 28.84 8 19 97 71 -003 103105108 -10-11-12 014 43 20 19 -9.3 -10.5 28.84 16 26 71 45 -001 99100103 -9-11-12 018 44 20 20 -9.5 -11.1 28.83 15 28 66 40 -002 95100100 -10-11-12 020 45 20 21 -9.6 -11.1 28.83 17 28 68 43 -004 96103104 -10-11-13 032 46 20 22 -10.2 -12.1 28.84 18 29 63 38 -006 93101106 -11-12-13 025 47 20 23 -10.2 -11.9 28.83 17 29 64 39 -005 95101106 -11-12-13 018 48 21 00 -10.0 -11.5 28.83 15 27 66 41 -007 97104107 -10-11-13 019 49 21 01 -9.9 -11.4 28.83 16 27 69 44 -006 97100101 -10-11-12 014 50 21 02 -10.2 -11.6 28.82 15 26 73 47 -006 98 99100 -10-11-12 015 51 21 03 -10.3 -11.8 28.82 15 26 72 47 000 98101100 -11-11-12 015 52 21 04 -10.7 -12.3 28.83 15 27 72 46 -001 97100101 -11-11-13 019 53 21 05 -10.9 -12.5 28.84 15 27 72 46 -002 97101100 -11-12-13 016 54 21 06 -11.0 -12.6 28.85 15 27 73 48 -002 97102101 -11-12-13 018 55 21 07 -10.8 -12.4 28.87 17 28 73 47 -006 96100103 -11-12-13 027 56 21 08 -10.4 -12.0 28.88 18 28 76 50 -005 96102105 -11-12-13 049 57 21 09 -11.3 -13.1 28.90 20 27 64 39 -003 95114118 -12-14-15 036 58 21 10 -11.3 -13.1 28.94 18 25 60 35 -006 96107111 -12-13-14 029 59 21 11 -11.7 -13.5 29.01 19 26 49 24 -006 95109111 -12-14-15 018 60 21 12 -13.2 -14.5 29.08 23 30 54 28 -011 102116118 -14-16-15 007 61 21 13 -15.2 -17.2 29.13 20 26 62 36 -001 97117119 -16-17-17 009 62 21 14 -15.4 -17.7 29.17 19 26 60 34 001 94107118 -16-17-18 013 63 21 15 -14.7 -17.0 29.19 19 25 69 44 002 94108114 -16-17-18 017 64 21 16 -15.4 -17.8 29.19 18 24 73 48 000 94104105 -16-18-18 015 65 21 17 -15.2 -17.5 29.18 17 25 75 49 000 94100100 -16-17-17 010 66 21 18 -15.7 -17.4 29.17 13 25 78 52 000 100 97 94 -15-15-16 004 67 21 19 -16.5 -16.9 29.15 11 26 87 61 000 116 88 90 -13-14-15 000 68 21 20 -16.7 -17.1 29.13 9 25 93 68 001 116 86 93 -11-13-14 000 69 21 21 -16.2 -16.6 29.11 9 27 97 71 002 116 70 97 -11-11-13 000 70 21 22 -16.6 -17.5 29.08 9 25 108 83 -001 111 65 80 -10-11-12 000 71 21 23 -15.0 -17.7 29.05 10 34 99 74 002 89 50 78 -10 -9-10 000 72 22 00 -13.2 -16.6 29.02 12 35 96 70 002 82 47 70 -9 -9-10 000 73 22 01 -12.2 -16.0 29.00 14 36 93 68 003 78 54 86 -9 -9 -9 000 74 22 02 -12.2 -16.0 28.98 15 38 90 64 004 78 54 90 -9 -9-10 000 75 22 03 -10.5 -13.8 28.96 19 36 92 66 001 81 92 96 -9 -8 -9 000 76 22 04 -9.0 -11.1 28.94 22 37 90 64 -001 90 93 95 -9 -9 -9 004 77 22 05 -7.9 -9.4 28.92 23 36 90 65 -004 95 98 98 -8 -8 -9 013 78 22 06 -7.4 -8.8 28.90 23 35 90 65 -003 95 98101 -8 -8 -9 024 79 22 07 -7.1 -8.5 28.89 22 34 91 66 -002 95 98101 -7 -8 -9 030 80 22 08 -6.9 -8.3 28.88 22 34 91 66 000 94 99102 -7 -8 -9 028 81 22 09 -6.8 -8.3 28.85 22 33 90 65 -001 94 99103 -7 -8 -9 026 82 22 10 -6.6 -8.1 28.83 23 34 93 67 -002 94 99104 -7 -8 -9 024 83 22 11 -6.6 -8.2 28.81 23 34 92 66 -001 93 98105 -7 -8 -9 018 84 22 12 -6.7 -8.6 28.79 21 33 94 68 000 89 87110 -7 -8 -9 006 85 22 13 -6.5 -9.1 28.78 20 32 91 65 003 84 75107 -6 -7 -8 001 86 22 14 -6.8 -9.7 28.76 17 31 95 69 000 82 67 95 -6 -6 -8 000 87 22 15 -6.2 -8.9 28.73 16 33 95 69 000 83 71 87 -6 -6 -7 000 88 22 16 -5.7 -8.3 28.71 19 32 86 61 -004 83 81 89 -6 -7 -7 002 89 22 17 -6.6 -8.9 28.71 15 30 81 55 -003 86 77 94 -6 -6 -7 000 90 22 18 -6.7 -9.0 28.71 14 29 74 48 -005 86 70 97 -5 -6 -7 000 91 22 19 -6.8 -9.0 28.70 11 27 74 49 -005 87 72 92 -5 -5 -7 000 92 22 20 -6.9 -8.8 28.70 10 26 75 49 -004 90 87101 -5 -6 -7 001 93 22 21 -7.0 -8.3 28.71 17 34 65 40 -001 95 88 97 -6 -6 -8 013 94 22 22 -6.2 -7.5 28.73 18 34 63 38 -002 95 94102 -6 -7 -8 004 95 22 23 -5.9 -7.3 28.74 22 36 61 35 -002 94102106 -6 -7 -9 013 96 23 00 -6.2 -7.6 28.76 22 34 61 35 -003 93102113 -7 -8 -9 020 97 23 01 -7.3 -8.9 28.78 22 35 59 33 -004 93 98104 -7 -9-10 009 98 23 02 -7.1 -8.5 28.80 21 34 63 37 -007 94102107 -7 -9-10 010 99 23 03 -7.2 -8.7 28.81 22 34 62 36 -004 94101104 -8 -9-10 013 100 23 04 -6.9 -8.5 28.82 22 33 63 37 -008 94102103 -7 -9-10 024 101 23 05 -6.9 -8.3 28.84 21 31 64 38 -004 94104112 -7 -9-10 028 102 23 06 -7.0 -8.4 28.85 20 31 65 40 -004 94104114 -8 -9-10 023 103 23 07 -6.9 -8.4 28.86 21 32 65 39 -003 94103110 -7 -9-10 034 104 23 08 -7.0 -8.4 28.88 21 31 69 43 -002 95101106 -7 -8-10 028 105 23 09 -6.8 -8.3 28.89 23 34 69 43 -006 94100105 -7 -8-10 035 106 23 10 -6.8 -8.4 28.91 19 31 62 36 -003 93 95106 -7 -8 -9 024 107 23 11 -6.9 -8.7 28.92 22 33 66 40 -004 91 94106 -7 -8-10 022 108 23 12 -7.2 -8.9 28.93 21 32 68 42 -004 93 98107 -8 -9-10 019 109 23 13 -7.1 -8.7 28.94 21 31 67 42 -001 93102105 -8 -9-10 023 110 23 14 -6.9 -8.5 28.95 21 29 63 38 -003 93103105 -8 -9-10 034 111 23 15 -6.8 -8.3 28.96 19 28 66 40 -004 93103109 -8 -9-10 038 112 23 16 -6.9 -8.5 28.96 19 29 67 42 003 93103106 -8 -9-10 026 113 23 17 -7.2 -8.9 28.97 19 30 66 41 002 92101108 -8 -9-10 015 114 23 18 -7.7 -9.2 28.98 18 29 66 41 001 94100109 -8 -9-11 007 115 23 19 -8.3 -9.5 28.99 18 29 66 40 -003 97103104 -9-10-11 007 116 23 20 -8.7 -10.2 29.01 17 28 60 35 000 95 96 96 -9-10-11 004 117 23 21 -9.6 -10.3 29.01 15 25 70 44 000 104 98 96 -9-10-11 001 118 23 22 -10.6 -11.5 29.02 16 26 65 39 000 104 96103 -10-10-12 001 119 23 23 -11.3 -12.2 29.04 16 28 61 35 003 104 95 97 -10-11-11 002 120 24 00 -11.4 -12.4 29.04 15 26 63 37 -001 103 95 96 -11-11-11 001 * 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.