Station ID: KOAK Lat: 37.71 Long: 122.23 GFS Model Run: 12Z 23APR 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 04/23 12Z 51 47 4 2 0.00 0.00 548 565 4.6 -19.5 1020.3 0 CLR CLR CLR **** **** 15.0 0.0 0.513 9.4 3 04/23 15Z 54 48 336 2 0.00 0.00 550 567 5.3 -18.0 1020.1 0 CLR CLR CLR 55 51 15.0 0.0 0.467 9.8 6 04/23 18Z 62 47 296 4 0.00 0.00 552 568 5.9 -17.3 1019.4 2 CLR CLR 355FEW372 62 50 15.0 0.0 0.543 10.0 9 04/23 21Z 64 45 288 9 0.00 0.00 553 568 6.3 -17.1 1017.8 19 CLR CLR 343FEW388 64 62 15.0 0.0 0.517 11.1 12 04/24 00Z 61 43 278 8 0.00 0.00 554 568 7.5 -16.9 1016.0 39 CLR CLR 322SCT386 65 60 15.0 0.0 0.450 11.8 15 04/24 03Z 53 46 263 7 0.00 0.00 554 568 7.8 -16.8 1016.4 94 CLR CLR 299BKN368 61 53 15.0 0.0 0.451 11.4 18 04/24 06Z 51 46 253 4 0.00 0.00 554 568 8.2 -17.0 1016.2 97 CLR CLR 288BKN375 61 51 15.0 0.0 0.474 10.5 21 04/24 09Z 51 47 239 4 0.00 0.00 553 566 8.2 -17.6 1015.3 100 017FEW020 214BKN240 258OVC334 52 51 15.0 0.0 0.529 8.8 24 04/24 12Z 52 46 237 6 0.00 0.00 552 564 7.6 -18.3 1014.6 100 016FEW022 204BKN239 253BKN335 53 50 15.0 0.0 0.546 5.8 27 04/24 15Z 53 46 204 6 0.00 0.00 551 563 7.5 -18.9 1014.8 100 016BKN026 195OVC232 246SCT309 53 52 15.0 0.0 0.539 5.6 30 04/24 18Z 57 45 208 4 0.00 0.00 551 563 7.8 -19.1 1014.3 100 017SCT026 193BKN235 241BKN299 57 52 15.0 0.0 0.493 6.9 33 04/24 21Z 62 46 259 9 0.00 0.00 552 563 6.9 -18.3 1013.4 60 CLR 192BKN227 248FEW288 62 57 15.0 0.0 0.538 8.9 36 04/25 00Z 59 46 260 12 0.00 0.00 552 563 8.0 -17.6 1012.2 31 CLR 192SCT226 248FEW288 62 57 15.0 0.0 0.530 8.2 39 04/25 03Z 53 47 267 8 0.00 0.00 552 563 7.3 -18.0 1012.7 0 CLR CLR CLR 59 53 15.0 0.0 0.566 6.7 42 04/25 06Z 51 46 268 5 0.00 0.00 552 563 8.3 -17.7 1012.7 36 FEW CLR 296SCT352 59 51 15.0 0.0 0.491 6.5 45 04/25 09Z 51 46 241 5 0.00 0.00 552 562 8.0 -16.9 1012.2 98 019FEW026 CLR 268OVC352 51 51 15.0 0.0 0.472 5.7 48 04/25 12Z 52 45 232 6 0.00 0.00 551 561 7.7 -17.3 1011.5 99 014SCT029 CLR 266OVC338 53 50 15.0 0.0 0.484 5.6 51 04/25 15Z 53 46 238 6 0.00 0.00 550 560 6.7 -17.8 1011.8 100 007BKN034 220SCT238 243OVC361 54 52 15.0 0.0 0.528 5.8 54 04/25 18Z 56 46 251 6 0.00 0.00 550 560 6.9 -18.4 1011.5 100 007BKN036 216BKN238 246OVC354 56 52 15.0 0.0 0.553 6.6 57 04/25 21Z 56 47 263 9 0.00 0.00 549 559 4.5 -19.3 1011.1 100 016BKN042 202BKN238 238OVC343 57 56 15.0 0.0 0.613 7.0 60 04/26 00Z 56 46 260 11 0.00 0.00 549 557 4.5 -19.1 1009.9 100 018BKN042 182BKN237 237OVC342 58 56 15.0 0.0 0.682 6.9 63 04/26 03Z 53 47 262 9 0.00 0.00 548 556 3.2 -19.6 1010.2 100 026SCT037 153OVC237 237OVC346 56 53 15.0 0.0 0.701 6.2 66 04/26 06Z 52 46 246 7 0.00 0.00 547 556 2.5 -20.1 1010.5 100 026SCT036 151OVC237 237OVC347 56 52 15.0 0.0 0.708 6.0 69 04/26 09Z 52 46 221 7 0.00 0.00 548 556 1.8 -19.6 1010.2 100 035SCT042 137OVC236 239BKN343 52 52 15.0 0.0 0.699 6.1 72 04/26 12Z 52 46 228 8 0.00 0.00 548 556 1.4 -19.0 1010.3 100 -RA 033BKN046 152BKN237 239BKN333 53 52 15.0 0.0 0.657 6.3 75 04/26 15Z 53 46 214 6 0.01 0.01 548 557 1.7 -19.1 1011.7 100 -RA 004OVC055 208BKN237 253BKN305 53 52 15.0 0.0 0.734 6.5 78 04/26 18Z 57 45 240 4 0.00 0.00 548 559 2.2 -19.1 1012.4 98 -RA 008BKN057 210SCT237 254BKN304 57 52 15.0 0.0 0.701 7.0 81 04/26 21Z 60 46 260 7 0.00 0.00 549 560 2.7 -19.2 1012.9 99 022OVC056 CLR 250FEW284 60 57 15.0 0.0 0.664 8.3 84 04/27 00Z 59 48 256 10 0.00 0.00 549 560 3.1 -19.1 1012.6 98 029OVC056 CLR 261FEW288 60 57 15.0 0.0 0.688 8.1 87 04/27 03Z 53 46 279 7 0.00 0.00 549 561 4.0 -18.5 1014.3 38 038SCT046 CLR 249FEW273 59 53 15.0 0.0 0.633 6.9 90 04/27 06Z 51 45 287 4 0.00 0.00 549 562 4.1 -18.5 1015.7 21 038FEW047 218FEW235 246FEW270 59 51 15.0 0.0 0.593 6.2 93 04/27 09Z 50 44 292 3 0.00 0.00 550 563 5.1 -17.6 1016.2 0 CLR CLR CLR 51 50 15.0 0.0 0.533 5.7 96 04/27 12Z 49 43 297 2 0.00 0.00 551 564 5.5 -17.1 1016.5 0 CLR CLR CLR 51 49 15.0 0.0 0.507 5.6 99 04/27 15Z 53 44 324 1 0.00 0.00 551 565 5.3 -17.1 1017.7 0 CLR CLR CLR 53 48 15.0 0.0 0.516 5.9 102 04/27 18Z 59 44 292 3 0.00 0.00 553 568 6.0 -17.0 1017.9 0 CLR CLR CLR 59 49 15.0 0.0 0.502 7.7 105 04/27 21Z 62 45 280 9 0.00 0.00 554 568 6.1 -17.0 1017.1 44 CLR CLR 321SCT387 62 59 15.0 0.0 0.521 10.2 108 04/28 00Z 59 46 286 9 0.00 0.00 555 568 7.6 -17.2 1016.2 72 CLR CLR 294BKN387 63 58 15.0 0.0 0.529 11.0 111 04/28 03Z 54 46 284 6 0.00 0.00 554 569 7.6 -17.4 1017.0 100 CLR 231FEW240 249OVC362 59 54 15.0 0.0 0.577 11.4 114 04/28 06Z 52 47 270 2 0.00 0.00 554 569 8.4 -17.7 1017.5 95 CLR 229SCT240 247BKN331 59 52 15.0 0.0 0.551 11.4 117 04/28 09Z 51 47 173 1 0.00 0.00 554 568 8.4 -18.5 1017.1 100 CLR 207BKN240 255BKN319 52 51 15.0 0.0 0.600 11.5 120 04/28 12Z 51 47 172 1 0.00 0.00 554 568 7.8 -18.6 1016.9 96 CLR 197BKN240 249BKN309 52 51 15.0 0.0 0.624 11.5 123 04/28 15Z 55 47 275 1 0.00 0.00 554 568 7.8 -18.1 1017.6 20 CLR 182FEW219 CLR 55 51 15.0 0.0 0.696 11.0 126 04/28 18Z 62 49 281 3 0.00 0.00 554 569 8.0 -17.4 1017.6 17 CLR 186FEW218 264FEW284 62 51 15.0 0.0 0.693 10.6 129 04/28 21Z 64 50 288 9 0.00 0.00 555 569 8.5 -16.8 1016.8 93 CLR 224SCT241 241BKN293 65 62 15.0 0.0 0.716 11.7 132 04/29 00Z 61 50 279 8 0.00 0.00 555 568 9.0 -17.3 1015.9 88 CLR 203BKN241 246BKN297 66 59 15.0 0.0 0.766 12.6 135 04/29 03Z 56 49 268 7 0.00 0.00 554 568 8.6 -17.4 1016.7 100 CLR 179BKN237 252BKN315 61 56 15.0 0.0 0.775 10.6 138 04/29 06Z 54 49 189 1 0.00 0.00 554 568 8.3 -16.3 1016.9 100 CLR 178BKN234 258SCT320 61 53 15.0 0.0 0.758 12.5 141 04/29 09Z 52 49 273 1 0.00 0.00 554 568 8.7 -15.7 1016.0 69 066FEW074 CLR 266BKN334 53 52 15.0 0.0 0.758 11.9 144 04/29 12Z 52 49 280 3 0.00 0.00 554 567 8.7 -15.9 1015.4 79 066FEW074 231FEW240 257BKN327 54 52 15.0 0.0 0.722 9.8 147 04/29 15Z 54 49 264 4 0.00 0.00 554 567 8.1 -15.3 1015.8 64 011FEW020 223FEW238 272BKN320 55 51 15.0 0.0 0.759 8.6 150 04/29 18Z 60 48 254 7 0.00 0.00 553 567 8.1 -14.2 1015.9 78 013SCT022 222FEW236 281BKN335 60 51 15.0 0.0 0.828 8.3 153 04/29 21Z 61 49 260 11 0.00 0.00 555 567 8.1 -14.8 1015.2 25 CLR CLR 298SCT329 61 60 15.0 0.0 0.800 8.9 156 04/30 00Z 57 48 258 14 0.00 0.00 556 568 8.4 -13.6 1015.2 16 CLR CLR 303FEW331 61 58 15.0 0.0 0.675 7.9 159 04/30 03Z 52 46 254 12 0.00 0.00 556 570 8.8 -12.9 1016.4 2 CLR CLR 313FEW324 57 52 15.0 0.0 0.574 8.0 162 04/30 06Z 51 46 255 13 0.00 0.00 557 571 8.9 -13.2 1017.0 5 FEW CLR CLR 57 51 15.0 0.0 0.511 7.1 165 04/30 09Z 51 45 267 12 0.00 0.00 557 571 9.2 -13.3 1017.1 15 020FEW023 CLR CLR 51 50 15.0 0.0 0.472 5.9 168 04/30 12Z 50 45 267 11 0.00 0.00 557 571 9.1 -13.3 1017.5 22 019FEW022 CLR CLR 52 50 15.0 0.0 0.435 5.8