In addition, the distance between Hawaii and North Korea is 4,660 miles.
Tensions have risen in recent weeks over North Korea's nuclear weapons and missile programs as Pyongyang has test-fired several missiles and conducted what it said was a test explosion of a hydrogen bomb as it advances toward its goal of developing a nuclear-tipped missile capable of hitting the USA mainland.
According to experts, the country is making progress with the miniaturization of a nuclear warhead which they believe could be fitted on an intercontinental ballistic missile which would take some 20 minutes to reach the Aloha state.
The email also told students and faculty to be aware of emergency sirens and to follow instructions on "sheltering in place". Some in attendance noted the meeting wasn't called because of a specific, immediate threat to Hawaii; however, "recent regional military threats" prompted plans for a proper response when needed.
The email comes amid heightened tensions between North Korea and the United States.
Japan is also on the radar of North Korea as North Korea threatened to bring "nuclear clouds" to Japan.
Pyongyang on September 3 detonated a hydrogen bomb capable of being carried by an intercontinental ballistic missile (ICBM), the sixth nuclear test it has undertaken, running counter to relevant UN Security Council resolutions and the goal of denuclearizing the Korean Peninsula.
A photo distributed by the North Korean government shows leader Kim Jong Un at an undisclosed location inspecting a weapon.
"The North Koreans love to fire off their missiles or have their nuclear tests coincide with a big anniversary". On Monday, U.S. Defense Secretary James Mattis said the army "must stand ready" in the face of continued provocations by the North Korean regime.
"This is entirely my responsibility - right down to the subject line", Dan Meisenzahl, director of UH system communications, said today.