The warning is a suggestion to be prepared in the event that evacuation orders are given at a later time.

Update: 

The Delta Fire grew to 15,294 acres overnight, according to Thursday morning’s report at https://inciweb.nwcg.gov/incident/6191/. The fire was reported to have been “very active overnight due to poor nighttime relative humidity recovery, extremely dry fuels, and topographic alignment. Active crown fire was observed with uphill runs and long-range spotting." Fire officials are forecasting that smoke from area fires may impact temperatures and humidities Thursday and ridgetop winds could increase from the south and southwest by midday with gusts in the 15 to 20 mph range in the afternoon.

Story posted at 6 a.m. Thursday:

After the Shasta County Sheriff’s Office issued mandatory evacuations for residents along the Interstate 5 corridor between Lamoine and the Shasta/Siskiyou County line last night, an Evacuation Warning was issued to all Dunsmuir residents as a result of the Delta Fire.

The warning for Dunsmuir was issued, according to the Siskiyou County Sheriff’s Office, “so that residents in Dunsmuir and vicinity can prepare themselves in the event an Evacuation Order is issued at a later time.”

The Sheriff’s Office suggests that residents “should prepare themselves by ensuring their valuables, legal medications, important papers, domestic animals, and heirlooms are safeguarded and packed should an Evacuation Order be issued. Citizens are advised to check with neighbors, children, friends, and relatives to ensure they too are ready for an evacuation in the unlikely event it is necessary. Citizens should ensure their motor vehicles have a full tank of gas, are in good working order, and emergency supplies such as flashlight, first aid kit, food, water, clothing, blankets, and a charged cellular phone are packed and ready to go. If domestic animals are transported, ensure food and other needed supplies are packed as well. Citizens with special needs, physical limitations, or those with no transportation should seek assistance from a family member or friend or, contact the Siskiyou County Sheriff’s Office (SCSO) to advise them of their situation at their 24-hour Dispatch Center at (530) 841-2900. Additional assistance or support can also be requested by calling the SCSO’s Dunsmuir Substation at (530) 235-2320 or 235-2232.”

The Delta fire was first reported Wednesday afternoon just before 1 p.m. near the Vollmers exit on I-5, about five miles north of Lakehead. It burned through the Pollard Flat area. The Sheriff’s office reported it burned two big rigs before spreading to the north and west, which resulted in the closure of Interstate 5. The highway remained closed through the night and could remain closed until Thursday afternoon and possibly longer, according to the Sheriff’s report. SR 89 and US 97 are suggested as alternate routes.

The California Highway Patrol reported last night that the fire was still burning along the roadway and there was some infrastructure damage to guardrails and the asphalt.

An evacuation center has been established at the Mt. Shasta Community Center on Alder Street.

As of Thursday night, the Delta Fire was reported at 5,000 acres and zero percent contained. The cause was listed as human. It was reported to be burning about 15 miles south of Dunsmuir.

The Sheriff’s Office says it will assign additional deputies and other peace officers “to help safeguard homes and other property if an Evacuation Order is issued.”

It’s suggested that citizens with domestic animals or livestock “seek arrangements to safeguard their pets or livestock in advance. Siskiyou County’s Agricultural Commissioner has some resources to assist but citizens are urged to make arrangements on their own if possible. The Siskiyou County Deputy Chief of the Office of Emergency Services is coordinating sheltering for people and some space will be allocated for domestic animals and tentatively, for some limited livestock, in the near future. 

The Sheriff’s Office states “an evacuation plan has been devised and includes a number of support agencies at the federal, state, and local levels who have been working hard to ensure the public is informed and safeguarded while fire mitigation measures are initiated by the involved agencies.”

Anyone with questions should contact the SCSO’s 24-Hour Dispatch Center at (530) 841-2900 or the Dunsmuir SCSO Substation at (530) 235-2320 or 235-2232.”