The Nob Fire ignited on April 26 and lasted through the end of the month. It burned roughly 227 acres, per the last update on Inciweb.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS SGX wrote it up.
The Nob Fire ignited on April 26 and lasted through the end of the month. It burned roughly 227 acres, per the last update on Inciweb. The cause is currently unknown at this time.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS San Diego, CA wrote its last area forecast discussion before the first event at Apr 26, 8:08 AM PST, 1 hour 8 minutes earlier.
Area Forecast Discussion National Weather Service San Diego CA 908 AM PDT Wed Apr 26 2023 .SYNOPSIS... Much warmer today across inland areas as high pressure strengthens across the western United States. A weakening marine layer is likely over the next several days with night and morning low clouds not spreading as far inland, though some beach locations could see patchy cloud cover each afternoon. The warming trend continues through this weekend, with the warmest conditions occurring on Saturday west of the mountains, and on Sunday for the mountains and deserts. Cooler for next week as low pressure develops along the West Coast. && .DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES... Update... At 9 AM, clouds are quickly retreating towards the coast. Temperatures are warmer this morning compared to yesterday, with a departure up to 5 degrees for the coast and valleys, and up to 10 to 20 degrees in portions of the mountains! Santa Ana winds are encouraging the much warmer temperatures in the mountains and along the coastal slopes, though the winds are generally weak with peak wind gusts of 30 to 40 mph in wind-prone locations. Much warmer temperatures are expected across inland areas today, with highs reaching the upper-70s to upper-80s for the valleys, the 60s and 70s for the mountains, the 80s for the High Desert and the upper-90s for the lower deserts. The coast will remain under the influence of the cool marine layer and the cold ocean temperatures, with highs likely not making it out of the upper-60s today. Patchy low clouds may stick around through the afternoon across the coast, but the rest of Southern California will be looking at mostly sunny skies by this afternoon. Previous Discussion (Issued 505 AM PDT Wed Apr 26 2023)... .SHORT TERM (Today through Friday)... High pressure aloft will strengthen over California into the weekend. The marine layer will become shallower and the marine inversion stronger. Satellite imagery shows widespread low clouds over the coastal waters extending inland across all of the Orange County coastal plain and across most of the San Diego County valleys. Cloud bases in San Diego County are only 100 to 200 feet lower than 24 hours ago with greater lowering of cloud bases in portions of coastal Los Angeles County to below 1000 feet. While the marine layer will become shallower, a weak coastal eddy at times is expected to help maintain enough depth to the marine layer for coastal low clouds to extend inland into the western valleys at times into the weekend. High temperatures for inland areas are expected to be significantly warmer while cool ocean temperatures and weak onshore flow result in less warming at the beaches. && .LONG TERM (Saturday through Tuesday)... There may be some weak offshore flow on Saturday behind a low pressure system moving southward through the central and southern Rockies on Friday. On Saturday, this could bring some gusty east winds to the mountains with warmer high temperatures for the valleys and inland coastal areas with the deserts a degree or two cooler than Friday. The guidance has trended not quite as hot for inland areas for Friday through Sunday. NBM now has a 43 percent chance for Palm Springs to reach 105 or higher on Sunday with chances down to 20 to 25 percent on Friday and Saturday. Yesterday, it was 45 to 50 percent for each of those three days. After the heat for inland areas peaks over the weekend, it will be cooler for next week as low pressure develops in the vicinity of the West Coast. There remain rather substantial model differences in the placement and evolution of a closed upper level low pressure system that could be in the vicinity of southern California at times. This is reflected in the ensemble guidance in the differences in the timing of potential periods of precipitation and in the ranges of potential amounts. NBM daily chances for measurable precipitation are generally 20 to 25 percent each day for Tuesday through Friday from the coast to the mountains with chances of getting measurable precipitation at some time between Tuesday and Friday probably 50 percent or greater. NBM has small probabilities of 1 to 2 percent at some locations for 2 inches or more of precipitation in 24 hours, so there are some potentially much wetter solutions. && .AVIATION... 261500Z...Coast/Valleys...Low clouds with bases 1000-1500 feet MSL will continue this morning across the coast and western valleys. Clouds will be slow to clear, 16-18Z inland and 18-20Z at the coast. Patchy low clouds may stick along the beaches through the afternoon. Low clouds will push back inland after 02Z, but will not spread as far inland overnight. Bases will be lower, 800-1000 feet MSL, with reduced vis on higher coastal terrain. Mountains/Deserts...Mostly clear with unrestricted vis today and tonight. && .MARINE... No hazardous marine conditions are forecast through Sunday. && .SKYWARN... Skywarn activation is not requested. However weather spotters are encouraged to report significant weather conditions. && .SGX WATCHES/WARNINGS/ADVISORIES... CA...None. PZ...None. && PUBLIC...EA/17 AVIATION/MARINE...Connolly
The national radar mosaic for the moment the first event began.
1 wildfire. Local standard time, as filed.
The Nob Fire ignited on April 26 and lasted through the end of the month. It burned roughly 227 acres, per the last update on Inciweb. The cause is currently unknown at this time.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2023Every state in 2023This day in weather historyWarnings in California, April 2023
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1093133.