Station ID: KOAK Lat: 37.71 Long: 122.23 GFS Model Run: 12Z 16APR 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 04/16 12Z 49 46 291 7 0.00 0.00 553 567 6.5 -17.1 1017.1 4 CLR CLR 000FEW000 **** **** 15.0 0.0 0.274 7.8 3 04/16 15Z 52 47 40 2 0.00 0.00 552 567 4.6 -16.7 1018.2 10 000FEW005 CLR 366FEW398 52 48 15.0 0.0 0.392 6.6 6 04/16 18Z 60 36 3 9 0.00 0.00 552 568 5.1 -16.3 1018.5 9 000FEW005 CLR 349FEW392 60 48 15.0 0.0 0.344 8.0 9 04/16 21Z 66 31 342 8 0.00 0.00 554 568 5.5 -15.9 1017.0 13 CLR CLR 331FEW390 66 61 15.0 0.0 0.196 11.9 12 04/17 00Z 68 29 350 10 0.00 0.00 555 568 7.0 -15.8 1015.5 11 CLR CLR 339FEW394 68 60 15.0 0.0 0.162 13.7 15 04/17 03Z 56 42 305 9 0.00 0.00 554 568 7.0 -15.4 1016.7 7 CLR CLR 379FEW412 68 56 15.0 0.0 0.276 11.6 18 04/17 06Z 55 38 328 8 0.00 0.00 555 569 7.6 -15.6 1016.7 5 CLR CLR 364FEW397 68 54 15.0 0.0 0.224 12.0 21 04/17 09Z 53 28 2 6 0.00 0.00 555 569 8.1 -15.8 1016.4 3 CLR CLR 338FEW357 55 53 15.0 0.0 0.163 12.0 24 04/17 12Z 49 25 40 4 0.00 0.00 555 569 8.2 -15.9 1016.9 5 CLR CLR 348FEW368 55 49 15.0 0.0 0.167 10.9 27 04/17 15Z 52 25 35 1 0.00 0.00 555 570 7.6 -15.8 1018.7 1 CLR CLR 355FEW366 52 48 15.0 0.0 0.167 8.9 30 04/17 18Z 61 29 23 5 0.00 0.00 556 571 8.4 -15.5 1018.3 3 CLR CLR 343FEW374 61 47 15.0 0.0 0.177 9.2 33 04/17 21Z 66 32 318 8 0.00 0.00 556 571 7.7 -15.3 1017.4 84 CLR CLR 281BKN359 66 62 15.0 0.0 0.232 12.0 36 04/18 00Z 62 39 289 10 0.00 0.00 557 571 8.5 -15.3 1016.7 92 CLR 227FEW241 281BKN369 67 61 15.0 0.0 0.323 12.7 39 04/18 03Z 54 43 292 6 0.00 0.00 557 571 9.2 -15.7 1017.2 96 CLR 203BKN242 270BKN342 62 54 15.0 0.0 0.370 12.9 42 04/18 06Z 51 42 237 2 0.00 0.00 557 571 9.9 -15.6 1017.7 71 CLR 203SCT240 285BKN351 62 51 15.0 0.0 0.377 12.7 45 04/18 09Z 50 43 188 3 0.00 0.00 557 571 9.9 -15.1 1017.4 90 CLR 184FEW193 311BKN390 51 50 15.0 0.0 0.402 12.6 48 04/18 12Z 50 43 155 3 0.00 0.00 556 570 9.5 -15.1 1016.5 95 CLR 207FEW216 283BKN389 51 50 15.0 0.0 0.424 12.7 51 04/18 15Z 53 41 105 2 0.00 0.00 557 570 9.6 -15.8 1016.5 100 CLR 210BKN241 244OVC387 53 49 15.0 0.0 0.450 12.5 54 04/18 18Z 62 40 294 2 0.00 0.00 557 570 9.8 -15.6 1016.2 100 CLR 186BKN241 243OVC389 62 49 15.0 0.0 0.459 11.9 57 04/18 21Z 65 40 270 4 0.00 0.00 558 570 9.9 -15.9 1014.9 100 CLR 179OVC241 241OVC398 66 62 15.0 0.0 0.418 13.9 60 04/19 00Z 66 41 286 6 0.00 0.00 558 569 10.0 -16.3 1013.2 100 CLR 200BKN241 241OVC400 68 62 15.0 0.0 0.426 14.4 63 04/19 03Z 57 46 296 6 0.00 0.00 557 568 10.1 -16.4 1013.1 100 CLR 208OVC241 241OVC402 66 57 15.0 0.0 0.454 14.9 66 04/19 06Z 55 45 287 3 0.00 0.00 557 568 10.4 -18.0 1013.4 100 CLR 207OVC241 241OVC396 66 54 15.0 0.0 0.520 13.9 69 04/19 09Z 54 45 264 1 0.00 0.00 556 566 10.2 -17.7 1012.0 100 CLR 183OVC240 240BKN384 55 54 15.0 0.0 0.520 13.4 72 04/19 12Z 54 44 170 1 0.00 0.00 556 565 10.1 -17.8 1010.7 100 CLR 172OVC240 240BKN376 55 54 15.0 0.0 0.497 13.1 75 04/19 15Z 56 46 276 2 0.00 0.00 555 564 9.5 -17.6 1011.4 100 CLR 150OVC240 282BKN353 56 53 15.0 0.0 0.429 11.7 78 04/19 18Z 63 43 284 3 0.00 0.00 554 564 8.8 -16.8 1011.8 98 CLR 159BKN233 285SCT352 63 53 15.0 0.0 0.460 10.5 81 04/19 21Z 65 42 285 10 0.00 0.00 555 564 7.9 -16.8 1010.8 99 CLR 163BKN214 269BKN367 65 63 15.0 0.0 0.574 12.1 84 04/20 00Z 62 40 279 9 0.00 0.00 555 563 9.3 -16.9 1009.9 100 CLR 157BKN216 252BKN379 65 61 15.0 0.0 0.553 11.7 87 04/20 03Z 55 43 295 7 0.00 0.00 555 564 9.9 -17.0 1010.2 100 CLR 191BKN234 240OVC388 62 55 15.0 0.0 0.541 12.2 90 04/20 06Z 54 44 324 1 0.00 0.00 554 564 9.5 -17.1 1011.6 100 CLR 196BKN237 240OVC385 62 54 15.0 0.0 0.503 10.9 93 04/20 09Z 53 41 133 5 0.00 0.00 553 564 8.4 -17.0 1012.2 100 CLR 209BKN239 239OVC369 54 53 15.0 0.0 0.470 10.0 96 04/20 12Z 52 42 135 7 0.00 0.00 552 563 7.8 -17.1 1012.5 100 CLR 210BKN239 245OVC350 54 52 15.0 0.0 0.488 9.9 99 04/20 15Z 55 42 137 6 0.00 0.00 552 563 7.2 -16.7 1013.5 59 FEW 193SCT219 269SCT297 55 51 15.0 0.0 0.644 10.9 102 04/20 18Z 61 39 146 4 0.00 0.00 553 564 8.1 -16.8 1013.8 77 086SCT119 141BKN162 269FEW296 61 51 15.0 0.0 0.753 11.5 105 04/20 21Z 63 41 311 8 0.00 0.00 554 565 8.4 -16.2 1012.4 99 068BKN119 123BKN133 CLR 65 61 15.0 0.0 0.701 14.0 108 04/21 00Z 65 42 218 15 0.00 0.00 555 565 8.8 -15.8 1011.9 80 076BKN119 124SCT134 CLR 67 61 15.0 0.0 0.715 12.5 111 04/21 03Z 57 47 206 5 0.00 0.00 554 565 10.0 -16.2 1012.7 79 098BKN120 120SCT134 401FEW425 64 57 15.0 0.0 0.716 11.6 114 04/21 06Z 55 46 128 3 0.00 0.00 554 565 8.3 -16.7 1013.8 47 099SCT120 122FEW135 394FEW422 64 55 15.0 0.0 0.766 11.1 117 04/21 09Z 54 44 150 3 0.00 0.00 552 564 7.4 -16.3 1013.7 11 105FEW119 136FEW150 390FEW410 55 54 15.0 0.0 0.723 11.5 120 04/21 12Z 53 41 103 6 0.00 0.00 551 563 6.9 -17.5 1013.4 11 105FEW119 133FEW149 384FEW410 55 53 15.0 0.0 0.747 11.4 123 04/21 15Z 56 40 135 0 0.00 0.00 550 562 5.9 -18.3 1014.3 66 089BKN119 120BKN158 CLR 56 53 13.6 0.0 0.853 10.1 126 04/21 18Z 51 47 89 6 0.16 0.00 549 562 5.6 -18.7 1015.1 83 -RA 051BKN117 119BKN195 CLR 56 50 10.3 0.0 1.002 9.2 129 04/21 21Z 52 50 107 4 0.15 0.00 549 561 5.3 -19.2 1014.4 100 RA 000OVC117 120OVC200 241BKN267 53 50 6.2 0.0 1.021 8.8 132 04/22 00Z 54 53 151 3 0.30 0.01 548 558 4.9 -19.4 1012.4 100 RA 000OVC117 118OVC215 238BKN287 54 51 2.0 0.0 1.026 9.0 135 04/22 03Z 54 53 135 3 0.25 0.05 546 556 4.8 -21.3 1012.2 100 -TSRA 000OVC117 126OVC224 236OVC283 54 53 13.0 0.0 0.890 8.8 138 04/22 06Z 54 50 223 8 0.08 0.08 544 555 3.4 -22.9 1012.7 100 -TSRA 019BKN099 126OVC229 235BKN271 55 53 14.8 0.0 0.872 7.9 141 04/22 09Z 52 49 149 5 0.10 0.00 543 553 3.3 -24.1 1012.0 100 -RA 009BKN116 124OVC220 235BKN259 54 51 15.0 0.0 0.764 7.2 144 04/22 12Z 51 48 157 7 0.01 0.01 542 552 2.5 -24.7 1012.2 95 -RA 022BKN116 130BKN220 234BKN256 54 50 11.6 0.0 0.758 7.1 147 04/22 15Z 53 49 145 6 0.02 0.02 541 552 2.6 -25.2 1013.0 100 -TSRA 058SCT117 180OVC214 234BKN247 53 51 14.7 0.0 0.695 7.2 150 04/22 18Z 58 47 176 5 0.01 0.01 541 553 2.3 -25.4 1013.8 100 -RA 060SCT115 183OVC222 234BKN247 58 51 14.8 0.0 0.711 7.7 153 04/22 21Z 62 44 250 9 0.01 0.01 542 554 2.9 -25.1 1013.7 100 -RA 050SCT064 138BKN234 234OVC253 62 58 14.7 0.0 0.656 9.1 156 04/23 00Z 61 45 274 8 0.00 0.00 544 554 3.4 -24.3 1012.6 100 052FEW065 144OVC234 234OVC256 62 58 15.0 0.0 0.629 9.3 159 04/23 03Z 54 47 287 7 0.00 0.00 544 556 3.8 -23.1 1013.6 39 FEW 175SCT228 235SCT261 61 54 15.0 0.0 0.629 8.1 162 04/23 06Z 52 48 265 4 0.00 0.00 545 557 4.2 -22.4 1014.4 37 095FEW112 175FEW229 248SCT287 61 52 15.0 0.0 0.704 8.3 165 04/23 09Z 51 49 266 6 0.00 0.00 547 559 4.2 -19.3 1013.7 94 073FEW098 215SCT235 245BKN289 52 51 15.1 0.0 0.782 8.2 168 04/23 12Z 50 48 286 5 0.00 0.00 549 560 4.7 -17.7 1013.4 72 056FEW078 204SCT232 247SCT290 52 50 15.0 0.0 0.821 7.9