Anyone who notices anything suspicious or sees Closs is asked to call 911 or the Barron County Sheriff's Office at 715-537-3106.
Fitzgerald said investigators don't consider Jayme a suspect in her parents' deaths, and he dismissed a tip placing Jayme's whereabouts in Miami as "not credible". "Every tip is important", Fitzgerald said. "We have no credible information about the Miami incident", Sheriff Chris Fitzgerald said Tuesday afternoon.
"Our number one goal is to bring Jayme home, and no amount of information will be given out unless we feel it's appropriate to help", Sherriff Fitzgerald said on Tuesday.
"We all know that these things just don't happen here", Fitzgerald said, adding that there will be an extra presence of law enforcement officers in town.
On Wednesday, the deaths of James and Denise Closs were officially ruled as homicide by a medical examiner. There was no gun found on the scene. Investigators have said they think she may have been home when her parents were killed and taken in the moments after the attack, but have not released further details.
Fitzgerald told reporters Tuesday that Jayme is "missing and endangered", noting that there is an active Amber Alert for the teen.
But the sheriff said he has a "100 percent expectation that she's alive".
In her post, Seara reminded her cousin that her family - including her slain parents - love her dearly.
During a media briefing on Tuesday morning, Fitzgerald said that he can't reveal why authorities believe Closs is in danger because it could compromise the investigation.
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Blue is Jayme's favorite color and green is a symbol for missing children, organizers said.
Authorities said a 911 call came in early Monday morning, but the person who made the call did not speak.
Authorities said they have determined whose cell phone the call came from, but declined to identify the owner.
Her disappearance and the tragic deaths of her parents are being felt throughout the Barron community. "They are the experts in breaking down 911 tapes, looking at our phones, and taking care of all evidence in that manner", he said.
Fitzgerald said he was struggling to deal with all the unanswered questions about the case.
While 82 percent of the Amber Alerts issued previous year identified a vehicle and 50 percent had specific license plate numbers, according to U.S. Department of Justice statistics, Closs' case offers neither of those clues.
"We just hope so much she finds her way back, it's so sad", said David Smith, a substitute teacher for the Barron Area School District. "We believe Jayme was home based on the evidence in our case".
Anyone with information is urged to call Barron County Sheriff's Department's tip line at 1-855-744-3879.