Station ID: KOAK Lat: 37.71 Long: 122.23 GFS Model Run: 12Z 19APR 2026 Clouds Bases and Tops are now agl HR Valid 2m Tmp 2m Dpt 10m Dir 10m Spd TPrcp CPrcp 1000-500 500mb 850mb 500mb MSLP TCC PRS WX Low Middle High Max Min Sfc Snowfall PWAT 925mb Deg F Deg F deg kt in. in. Thk GPH Tmp Tmp mb % TEXT Clouds Clouds Clouds Tmp Tmp Vis in in Tmp 0 04/19 12Z 53 49 303 2 0.00 0.00 556 565 10.0 -18.9 1011.8 100 CLR 000OVC000 000OVC000 **** **** 15.0 0.0 0.506 13.3 3 04/19 15Z 55 49 279 1 0.00 0.00 555 565 9.4 -17.6 1012.4 99 CLR 182BKN240 252BKN363 56 52 15.0 0.0 0.487 12.5 6 04/19 18Z 63 45 281 5 0.00 0.00 555 565 9.1 -16.6 1012.7 97 CLR 174BKN238 264BKN360 63 52 15.0 0.0 0.475 11.1 9 04/19 21Z 67 42 279 8 0.00 0.00 556 565 8.5 -16.5 1010.9 92 CLR 160BKN205 297BKN386 67 63 15.0 0.0 0.510 13.4 12 04/20 00Z 63 40 264 10 0.00 0.00 556 564 9.7 -16.1 1010.5 95 CLR 161SCT204 296BKN388 68 62 15.0 0.0 0.448 12.1 15 04/20 03Z 57 41 292 4 0.00 0.00 555 564 10.6 -16.6 1010.2 100 CLR CLR 263OVC401 63 57 15.0 0.0 0.452 13.1 18 04/20 06Z 55 38 175 3 0.00 0.00 554 564 9.6 -17.0 1011.7 100 CLR 174FEW190 259OVC401 63 55 15.0 0.0 0.392 11.3 21 04/20 09Z 53 40 140 8 0.00 0.00 554 564 8.2 -17.0 1011.9 97 CLR 174FEW189 252BKN342 55 53 15.0 0.0 0.508 9.5 24 04/20 12Z 52 43 143 9 0.00 0.00 552 562 6.8 -17.0 1011.8 71 CLR 179FEW193 248BKN324 55 51 15.0 0.0 0.752 9.8 27 04/20 15Z 55 41 140 10 0.00 0.00 552 562 6.9 -17.1 1012.2 28 077FEW118 164FEW181 CLR 55 51 15.0 0.0 0.865 9.9 30 04/20 18Z 60 45 169 9 0.00 0.00 552 563 6.5 -17.1 1012.5 64 050BKN114 132FEW156 CLR 61 51 15.0 0.0 0.829 10.3 33 04/20 21Z 59 51 195 11 0.01 0.00 553 563 6.8 -17.8 1011.9 98 -RA 027BKN095 119FEW133 355SCT401 62 59 14.0 0.0 1.062 11.6 36 04/21 00Z 56 52 178 7 0.23 0.00 551 561 6.1 -16.8 1011.8 99 -RA 014OVC106 119BKN177 341SCT392 62 55 9.4 0.0 0.931 9.0 39 04/21 03Z 54 52 268 4 0.17 0.00 550 560 5.1 -18.1 1012.9 100 RA 000OVC114 118SCT183 351FEW374 56 54 13.8 0.0 1.010 8.0 42 04/21 06Z 54 49 153 4 0.05 0.00 548 559 4.8 -18.8 1013.1 100 -RA 012OVC111 123BKN181 350FEW373 56 53 14.5 0.0 0.788 8.3 45 04/21 09Z 53 50 147 5 0.01 0.00 546 557 3.2 -18.4 1012.9 95 -RA 065SCT103 130BKN198 CLR 53 52 11.2 0.0 0.880 7.6 48 04/21 12Z 52 49 130 6 0.02 0.01 545 555 2.9 -19.6 1011.7 88 -RA 043BKN109 127BKN210 236FEW245 53 52 13.5 0.0 0.836 7.7 51 04/21 15Z 53 50 103 5 0.02 0.02 543 552 3.0 -22.9 1010.7 100 -TSRA 008OVC116 141BKN171 235SCT246 53 52 12.9 0.0 0.799 7.8 54 04/21 18Z 53 51 122 7 0.13 0.03 543 552 3.5 -24.4 1010.3 100 -TSRA 009OVC117 141BKN171 234SCT257 54 52 12.1 0.0 0.859 7.4 57 04/21 21Z 55 49 191 13 0.13 0.05 541 550 2.2 -24.5 1010.1 100 -TSRA 000BKN117 135OVC207 233BKN254 55 52 9.4 0.0 0.741 6.4 60 04/22 00Z 53 46 242 18 0.06 0.06 539 548 0.6 -25.8 1010.8 96 -TSRA 009BKN095 149BKN217 233BKN254 56 52 14.8 0.0 0.689 5.4 63 04/22 03Z 51 47 257 12 0.08 0.05 539 550 0.8 -25.9 1012.5 99 -TSRA 004BKN117 117BKN215 CLR 53 51 8.3 0.0 0.723 5.4 66 04/22 06Z 51 47 253 11 0.06 0.04 539 552 1.4 -25.5 1015.2 98 -TSRA 000BKN117 118BKN220 CLR 53 51 8.6 0.0 0.700 5.5 69 04/22 09Z 52 47 250 11 0.06 0.06 539 554 0.8 -24.9 1017.2 92 -TSRA 033BKN115 119SCT158 CLR 52 51 11.7 0.0 0.715 6.1 72 04/22 12Z 51 47 237 5 0.04 0.03 541 557 1.1 -24.0 1018.8 95 -TSRA 031BKN116 118SCT156 CLR 52 51 14.6 0.0 0.717 6.1 75 04/22 15Z 53 48 223 3 0.03 0.03 543 560 1.3 -20.1 1021.2 71 -TSRA 050BKN109 118FEW125 CLR 53 50 8.1 0.0 0.695 5.9 78 04/22 18Z 56 48 194 5 0.02 0.02 545 564 2.2 -19.2 1022.4 77 -TSRA 049BKN095 CLR CLR 56 50 15.0 0.0 0.648 6.1 81 04/22 21Z 60 46 276 13 0.00 0.00 546 565 2.0 -18.9 1022.4 21 039FEW049 CLR CLR 61 56 15.0 0.0 0.576 7.7 84 04/23 00Z 57 46 278 12 0.00 0.00 547 565 2.9 -18.2 1022.0 12 038FEW048 CLR 287FEW299 61 56 15.0 0.0 0.535 6.5 87 04/23 03Z 52 45 285 8 0.00 0.00 548 566 3.6 -17.5 1022.0 4 CLR CLR 329FEW356 57 52 15.0 0.0 0.491 7.0 90 04/23 06Z 50 44 276 6 0.00 0.00 549 567 3.8 -16.9 1021.7 39 CLR CLR 313SCT360 57 50 15.0 0.0 0.483 6.8 93 04/23 09Z 49 44 296 6 0.00 0.00 549 567 2.7 -17.5 1021.1 25 CLR CLR 291FEW341 50 49 15.0 0.0 0.523 6.2 96 04/23 12Z 47 44 343 3 0.00 0.00 549 566 2.7 -17.2 1020.0 19 FEW CLR 292FEW334 50 47 15.0 0.0 0.532 5.8 99 04/23 15Z 50 44 356 3 0.00 0.00 550 566 3.6 -17.9 1019.6 16 FEW CLR 318FEW367 50 46 15.0 0.0 0.463 6.1 102 04/23 18Z 59 44 316 3 0.00 0.00 551 567 4.5 -18.8 1018.7 14 FEW CLR 324FEW360 59 46 15.0 0.0 0.451 7.3 105 04/23 21Z 61 44 287 9 0.00 0.00 552 566 4.5 -18.9 1016.6 11 CLR CLR 307FEW331 61 59 15.0 0.0 0.463 9.8 108 04/24 00Z 58 46 286 10 0.00 0.00 553 566 6.2 -18.5 1014.9 40 CLR FEW 281SCT313 62 56 15.0 0.0 0.465 10.0 111 04/24 03Z 52 45 269 7 0.00 0.00 553 566 6.5 -18.3 1015.1 87 CLR FEW 249BKN304 58 52 15.0 0.0 0.451 10.3 114 04/24 06Z 49 44 256 5 0.00 0.00 553 565 7.9 -18.6 1015.3 54 CLR FEW 255BKN304 58 49 15.0 0.0 0.383 9.5 117 04/24 09Z 48 44 240 3 0.00 0.00 552 564 7.1 -18.7 1014.1 50 CLR CLR 317SCT353 49 48 15.0 0.0 0.380 9.3 120 04/24 12Z 48 44 201 2 0.00 0.00 552 563 6.3 -18.9 1013.3 63 CLR CLR 312BKN351 49 48 15.0 0.0 0.475 9.5 123 04/24 15Z 52 46 185 2 0.00 0.00 551 562 6.4 -18.6 1013.4 51 CLR CLR 309BKN351 52 48 15.0 0.0 0.545 10.0 126 04/24 18Z 60 47 279 2 0.00 0.00 551 562 6.6 -18.5 1013.2 32 CLR CLR 311SCT351 60 48 15.0 0.0 0.535 9.4 129 04/24 21Z 63 47 290 8 0.00 0.00 551 562 6.5 -18.6 1012.5 11 CLR CLR 327FEW344 64 59 15.0 0.0 0.563 11.2 132 04/25 00Z 62 49 279 10 0.00 0.00 552 562 7.8 -18.7 1011.3 9 CLR CLR 327FEW343 65 59 15.0 0.0 0.574 12.0 135 04/25 03Z 54 48 283 6 0.00 0.00 552 562 8.2 -18.7 1012.0 0 CLR CLR CLR 62 54 15.0 0.0 0.552 11.2 138 04/25 06Z 52 49 242 3 0.00 0.00 552 562 7.8 -18.7 1012.4 1 CLR CLR CLR 62 52 13.7 0.0 0.526 10.8 141 04/25 09Z 51 48 193 3 0.00 0.00 551 561 7.6 -19.1 1012.3 0 CLR CLR CLR 52 51 14.9 0.0 0.512 10.1 144 04/25 12Z 50 48 178 2 0.00 0.00 551 560 8.0 -19.3 1011.8 2 CLR CLR FEW 52 50 15.0 0.0 0.567 8.7 147 04/25 15Z 53 48 195 4 0.00 0.00 550 560 7.9 -19.6 1012.1 83 007BKN025 CLR 298FEW314 53 50 15.0 0.0 0.650 7.1 150 04/25 18Z 59 48 243 5 0.00 0.00 551 561 8.1 -20.0 1012.2 89 007BKN027 CLR 300FEW316 59 50 15.0 0.0 0.662 7.8 153 04/25 21Z 62 49 256 13 0.00 0.00 551 561 8.0 -19.5 1011.6 6 FEW CLR FEW 62 60 15.0 0.0 0.664 9.2 156 04/26 00Z 59 48 256 14 0.00 0.00 552 561 8.8 -19.1 1010.7 1 CLR CLR CLR 62 59 15.0 0.0 0.633 8.0 159 04/26 03Z 53 46 262 11 0.00 0.00 552 561 9.0 -18.7 1011.4 34 014SCT028 203FEW214 CLR 59 54 15.0 0.0 0.608 5.9 162 04/26 06Z 52 45 252 12 0.00 0.00 552 562 8.9 -18.1 1012.1 50 015SCT027 207FEW227 CLR 59 51 15.0 0.0 0.487 5.2 165 04/26 09Z 51 44 256 11 0.00 0.00 552 562 8.2 -18.0 1012.4 99 006OVC030 214FEW238 262FEW285 52 51 15.0 0.0 0.432 5.0 168 04/26 12Z 51 44 256 10 0.01 0.00 551 562 7.3 -17.7 1012.5 100 005OVC033 214FEW238 295FEW325 52 51 15.0 0.0 0.449 4.7