Station ID: KOAK Lat: 37.71 Long: 122.23 GFS Model Run: 0Z 20APR 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 04/20 00Z 63 41 270 10 0.00 0.00 556 565 9.8 -16.2 1010.6 100 CLR CLR 000OVC000 **** **** 15.0 0.0 0.439 12.2 3 04/20 03Z 56 45 294 4 0.00 0.00 556 564 10.4 -16.4 1010.6 100 CLR CLR 266OVC401 63 56 15.0 0.0 0.436 12.9 6 04/20 06Z 54 42 172 3 0.00 0.00 555 565 9.6 -16.9 1011.9 100 CLR 166FEW177 262OVC402 63 54 15.0 0.0 0.418 11.4 9 04/20 09Z 53 43 144 7 0.00 0.00 554 564 8.4 -17.2 1012.3 73 CLR 193FEW204 249BKN346 54 53 15.0 0.0 0.532 9.8 12 04/20 12Z 52 45 140 8 0.00 0.00 553 563 7.4 -16.8 1011.9 56 CLR 203FEW219 250BKN329 54 52 15.0 0.0 0.748 10.1 15 04/20 15Z 55 43 142 10 0.00 0.00 552 563 6.6 -16.4 1012.5 9 096FEW119 140FEW151 239FEW259 55 52 15.1 0.0 0.849 9.8 18 04/20 18Z 63 47 162 10 0.00 0.00 553 563 6.8 -16.8 1012.8 47 047SCT108 123FEW140 290FEW307 64 51 15.0 0.0 0.904 10.8 21 04/20 21Z 59 53 171 11 0.03 0.00 553 563 7.3 -17.1 1012.1 84 -RA 037BKN098 119BKN147 350SCT400 67 59 5.7 0.0 1.130 11.4 24 04/21 00Z 57 54 196 13 0.11 0.00 552 562 6.6 -17.8 1011.0 89 -RA 018BKN107 119BKN172 340SCT391 67 57 3.9 0.0 1.135 9.4 27 04/21 03Z 52 51 229 3 0.30 0.00 550 560 4.9 -17.5 1012.6 100 RA 000OVC118 118OVC199 354FEW372 57 52 8.6 0.0 0.997 7.5 30 04/21 06Z 53 50 166 6 0.02 0.00 548 559 3.8 -18.7 1013.2 90 RA 000BKN114 118BKN181 353FEW371 57 52 15.1 0.0 0.873 8.2 33 04/21 09Z 53 50 167 7 0.07 0.02 546 557 3.0 -19.4 1012.7 100 -TSRA 016OVC114 117OVC188 CLR 54 53 15.0 0.0 0.852 8.0 36 04/21 12Z 52 49 145 6 0.02 0.01 545 555 3.2 -21.0 1011.8 91 -RA 013BKN114 117BKN175 CLR 54 52 14.6 0.0 0.768 8.1 39 04/21 15Z 54 50 148 6 0.02 0.02 543 553 3.5 -23.0 1011.7 98 -TSRA 032BKN117 117FEW131 CLR 54 52 9.7 0.0 0.813 7.7 42 04/21 18Z 57 51 168 8 0.08 0.06 542 552 3.3 -24.8 1011.4 99 -TSRA 030BKN113 132BKN169 CLR 57 52 5.5 0.0 0.810 7.6 45 04/21 21Z 53 49 203 11 0.14 0.08 542 551 1.2 -24.3 1011.6 100 -TSRA 019BKN091 119OVC215 234BKN252 58 53 4.6 0.0 0.793 6.3 48 04/22 00Z 54 49 255 13 0.08 0.02 541 551 2.0 -24.0 1011.4 100 -TSRA 012BKN104 119OVC223 234BKN256 58 51 7.8 0.0 0.757 6.1 51 04/22 03Z 52 47 252 10 0.04 0.04 540 551 1.5 -25.8 1013.8 99 -TSRA 016BKN092 154SCT223 233SCT248 54 52 13.9 0.0 0.683 5.9 54 04/22 06Z 51 46 258 10 0.02 0.02 539 553 1.2 -24.9 1016.4 75 -TSRA 022BKN097 158SCT226 234FEW249 54 51 13.6 0.0 0.597 5.4 57 04/22 09Z 51 46 255 9 0.02 0.02 538 553 1.0 -26.5 1018.4 92 -TSRA 073BKN088 134BKN182 CLR 51 51 15.3 0.0 0.637 5.2 60 04/22 12Z 49 45 252 4 0.03 0.03 539 556 0.2 -19.1 1019.9 84 -TSRA 064BKN094 130BKN171 CLR 51 49 12.5 0.0 0.602 5.4 63 04/22 15Z 52 46 218 2 0.01 0.01 544 562 1.0 -17.6 1021.6 32 051SCT093 CLR CLR 52 49 15.0 0.0 0.531 4.9 66 04/22 18Z 56 45 234 3 0.00 0.00 546 565 1.0 -17.7 1022.7 51 -RA 039SCT064 CLR 308SCT365 56 49 15.0 0.0 0.540 5.7 69 04/22 21Z 60 44 280 9 0.00 0.00 547 566 1.3 -17.6 1022.1 100 -RA 038SCT050 CLR 269OVC365 60 56 15.0 0.0 0.528 7.3 72 04/23 00Z 58 44 283 11 0.00 0.00 548 566 2.9 -17.7 1021.5 84 038SCT050 CLR 258BKN352 60 56 15.0 0.0 0.493 7.0 75 04/23 03Z 52 43 293 7 0.00 0.00 548 566 3.8 -17.8 1021.2 26 CLR 229FEW239 283SCT313 58 52 15.0 0.0 0.453 7.0 78 04/23 06Z 49 45 285 4 0.00 0.00 549 566 3.9 -17.3 1021.2 49 CLR 229FEW239 297SCT351 58 50 15.0 0.0 0.449 6.8 81 04/23 09Z 48 44 301 3 0.00 0.00 549 566 4.1 -17.4 1020.0 38 CLR CLR 260SCT324 50 49 15.0 0.0 0.492 6.8 84 04/23 12Z 47 44 343 3 0.00 0.00 550 565 4.3 -17.4 1019.2 25 CLR CLR 265FEW324 50 47 15.0 0.0 0.524 6.0 87 04/23 15Z 50 43 4 3 0.00 0.00 550 566 4.9 -17.6 1019.4 77 CLR 225FEW239 244BKN337 50 46 15.0 0.0 0.494 6.8 90 04/23 18Z 59 44 300 3 0.00 0.00 551 566 5.3 -17.6 1018.1 74 CLR 226FEW239 250BKN347 59 46 15.0 0.0 0.461 7.8 93 04/23 21Z 61 44 286 8 0.00 0.00 552 566 5.3 -17.9 1016.6 100 CLR 219FEW239 239OVC373 61 59 15.0 0.0 0.460 9.8 96 04/24 00Z 58 46 287 9 0.00 0.00 553 565 7.1 -18.9 1014.7 100 CLR 212SCT239 244OVC349 62 57 15.0 0.0 0.442 10.3 99 04/24 03Z 53 46 264 5 0.00 0.00 553 565 6.7 -18.9 1014.7 97 CLR 216SCT239 240BKN306 58 53 15.0 0.0 0.453 10.8 102 04/24 06Z 50 45 243 4 0.00 0.00 553 565 8.0 -19.2 1015.0 97 CLR 218SCT239 242BKN303 58 50 15.0 0.0 0.395 10.2 105 04/24 09Z 50 45 213 4 0.00 0.00 552 564 7.9 -19.4 1014.5 100 CLR 229FEW239 239OVC301 50 50 15.0 0.0 0.377 9.2 108 04/24 12Z 49 46 212 4 0.00 0.00 552 564 7.2 -19.3 1014.2 100 015FEW018 229FEW239 239OVC309 50 49 15.0 0.0 0.418 9.3 111 04/24 15Z 52 46 195 2 0.00 0.00 552 564 7.4 -19.6 1014.4 100 013FEW017 227SCT239 239OVC342 52 49 15.0 0.0 0.450 9.4 114 04/24 18Z 59 47 253 3 0.00 0.00 553 565 7.6 -19.3 1014.2 100 013FEW017 227FEW239 241OVC330 59 49 15.0 0.0 0.517 9.2 117 04/24 21Z 63 48 287 8 0.00 0.00 554 565 7.8 -19.3 1012.9 100 CLR CLR 248OVC325 63 59 15.0 0.0 0.545 10.9 120 04/25 00Z 59 48 270 10 0.00 0.00 554 564 8.6 -19.2 1011.7 100 CLR CLR 248OVC333 64 58 15.0 0.0 0.558 11.6 123 04/25 03Z 53 48 268 8 0.00 0.00 553 564 9.0 -19.4 1012.5 100 CLR CLR 245OVC323 59 53 15.0 0.0 0.541 9.1 126 04/25 06Z 51 48 253 5 0.00 0.00 553 563 8.5 -19.6 1012.8 100 015FEW020 CLR 246OVC315 59 51 15.0 0.0 0.536 9.4 129 04/25 09Z 53 48 239 5 0.00 0.00 552 562 8.5 -20.0 1012.3 100 013SCT020 CLR 253OVC322 53 51 15.0 0.0 0.626 7.6 132 04/25 12Z 53 47 231 7 0.00 0.00 551 561 8.0 -20.3 1012.4 100 009BKN023 CLR 254BKN315 53 51 15.0 0.0 0.680 6.8 135 04/25 15Z 54 47 232 7 0.00 0.00 551 562 7.8 -20.0 1013.0 97 000BKN031 CLR FEW 54 53 15.0 0.0 0.664 6.3 138 04/25 18Z 56 47 254 8 0.00 0.00 551 562 7.7 -19.8 1013.6 98 004BKN033 CLR CLR 56 52 15.0 0.0 0.656 6.6 141 04/25 21Z 59 47 264 13 0.00 0.00 552 563 8.3 -19.4 1013.1 86 017BKN033 CLR CLR 59 56 15.0 0.0 0.571 7.2 144 04/26 00Z 56 46 266 13 0.00 0.00 552 563 8.9 -18.2 1012.6 45 017SCT032 CLR CLR 59 56 15.0 0.0 0.519 6.4 147 04/26 03Z 52 45 261 11 0.00 0.00 553 563 9.0 -17.0 1013.0 34 019SCT030 CLR CLR 56 52 15.0 0.0 0.415 5.5 150 04/26 06Z 51 45 254 10 0.00 0.00 552 564 9.0 -17.2 1013.9 32 020SCT029 CLR CLR 56 51 15.0 0.0 0.380 4.9 153 04/26 09Z 51 44 255 10 0.00 0.00 552 564 8.8 -17.6 1014.2 72 018BKN030 CLR CLR 52 50 15.0 0.0 0.366 4.7 156 04/26 12Z 51 43 260 8 0.00 0.00 552 563 8.1 -17.5 1014.2 89 018BKN031 CLR CLR 52 50 15.0 0.0 0.381 4.6 159 04/26 15Z 52 42 270 6 0.00 0.00 552 564 8.0 -17.3 1014.8 100 006OVC035 CLR CLR 52 51 15.0 0.0 0.385 4.4 162 04/26 18Z 56 43 266 6 0.00 0.00 553 565 8.4 -17.2 1014.9 100 009OVC035 CLR CLR 56 51 15.0 0.0 0.404 5.7 165 04/26 21Z 59 45 279 9 0.00 0.00 553 565 8.7 -17.5 1014.4 10 FEW CLR 340FEW359 59 56 15.0 0.0 0.436 7.2 168 04/27 00Z 58 46 270 10 0.00 0.00 554 565 9.8 -17.9 1013.2 5 FEW CLR 339FEW359 59 56 15.0 0.0 0.480 7.6