Little Fire near Pleasanton rapidly expands to 700 acres, sparking evacuation orders

A Level 3 Evacuation Order was issued for Zone ALC-072 at 3:38 p.m., requiring immediate evacuation; ALC-072 is described as north of Vallecitos Road and east of I-680.
The Little Fire's acreage expanded rapidly: about 50 acres by 3:05 p.m.; 150 acres by 4:00 p.m.; and CAL FIRE later reported roughly 700 acres by 4:30 p.m., illustrating explosive growth within hours.
The fire was reported near Little Valley Road and Hubbard Lane south of Pleasanton, with later reporting placing it near Vallecitos and Little Valley roads in Sunol and near the Callippe Preserve Golf Course.
Forecasts and conditions included a National Weather Service heat advisory through 9 p.m., inland temperatures into the 90s to low 100s, breezy conditions, and humidity expected to rise later, potentially improving firefighting conditions.
A fast-moving wildfire south of Pleasanton exploded from roughly 50 acres to 700 acres in less than two hours on Tuesday afternoon, forcing residents from several neighborhoods under emergency evacuation orders. The fire, named the Little Fire, broke out around 2:41 p.m. near Little Valley Road and Hubbard Lane, according to Patch.
By 4:30 p.m., KSBW reported Cal Fire had sized the blaze at approximately 700 acres with zero containment. No injuries or structural damage were reported, but the situation remained fluid as crews raced to catch up with the fire's rapid spread.
The Little Fire grew with alarming speed. It reached about 50 acres by 3:05 p.m. Then it hit 150 acres by 4:00 p.m. Just 30 minutes later, Cal Fire put the size at roughly 700 acres, according to KSBW. That's a 14-fold increase in under two hours.
ABC7 News reported the fire started as a grass fire before 3 p.m. in the area near the Callippe Preserve Golf Course in Sunol. Later updates from Pleasanton Weekly noted Cal Fire had ordered the entire Ruby Hill neighborhood to evacuate as the fire crept toward 400 acres near the golf course.
Authorities issued a Level 3 Evacuation Order — meaning get out immediately — for Zone ALC-072 at 3:38 p.m. That zone covers the area north of Vallecitos Road and east of I-680. Orders also went out for zones PLS-080, PLS-081, and PLS-103, according to Head Topics.
Two more zones, PLS-079 and PLS-082, were placed under evacuation warnings. A warning means be ready to leave fast. Officials urged residents to check evacuation maps and sign up for local alert systems. They asked everyone to follow orders without delay.
The National Weather Service had a heat advisory in effect through 9 p.m. Tuesday. Inland temperatures climbed into the 90s and low 100s. Breezy winds pushed the fire hard across dry vegetation. Containment stayed at zero throughout the afternoon, according to ABC7 News.
There was some hope on the horizon. Forecasters said humidity was expected to rise later in the day. That could slow the fire's spread and give crews a better chance. The Alameda County Fire Department and Livermore-Pleasanton Fire Department both responded, with Cal Fire classifying it as a local-agency incident.
Despite the fire's explosive growth, Pleasanton Weekly and other outlets reported no injuries and no confirmed structural damage as of the latest updates. Cal Fire took the lead on tracking the blaze and kept it listed as a local-agency fire rather than a state-level response.
Crews from multiple agencies worked the fire lines as conditions remained tough. Officials told residents to stay out of evacuation zones and monitor the Alameda County Sheriff's Office alert system for updates. The fire's path and final size were still unknown as firefighting efforts continued into the evening.
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