OHIO: Those living within 1 mile of the train derailment in East Palestine, evacuate immediately due to the risk of a major explosion. (Source: Governor)

ALASKA: Earthquake measuring 7.4 near Sand Point. TSUNAMI WARNING for South Alaska and the Alaska Peninsula, from Kennedy Entrance to Unimak Pass. If in a coastal area, keep calm and quickly move to higher ground away from the coast. (Source: NTWC/USGS)

WEST COAST: Earthquake measuring 7.4 in the Alaska Peninsula. Local tsunami warnings are in effect. The risk to WA, OR and CA, if any, is still being evaluated. (Source: NTWC)

ALASKA: Map of tsunami warnings currently in effect. If in a coastal area, keep calm and quickly move to higher ground. (Source: NTWC)

ALASKA: The tsunami warning has been canceled. A TSUNAMI ADVISORY remains in effect. Stay out of the water and off the beach. (Source: NTWC)

ALASKA: All tsunami alerts have been canceled. Small tsunami waves were generated but no longer pose a threat. This is the final update. (Source: NTWC)

NATIONAL: No tsunami warnings are in effect. A test message went out on some apps. (Source: NTWC)

CALIFORNIA: 5.0-magnitude earthquake near Ojai, northwest of Los Angeles. Use 911 for emergencies only (Source: USGS)

NATIONAL: This is a nationwide test. No action is required. (Source: FEMA)

MAINE: An active shooter is located in Lewiston. Avoid the area and shelter in place immediately. (Source: Emergency Management)

MAINE: Androscoggin County has issued a county-wide shelter in place order. Make sure your homes and vehicles are secured. (Source: Emergency Management)

FLORIDA: Palm Beach County 911 system down due to technical issues. If you have an emergency, call 561-688-3000 or 561-688-3400. (Source: Sheriff)

EAST COAST: Earthquake measuring 4.8 near Lebanon, New Jersey. Use 911 for emergencies only. (Source: USGS)

SOUTH DAKOTA: 911 is down across the state. If you have an emergency, use this list to reach police, fire or EMS.

NEVADA: Outage affecting 911 calls in Las Vegas. Calls from landlines are not getting through. If you use a mobile device, dispatch will see your number and call you back. Text to 911 is still working. (Source: LVMPD)

SOUTH DAKOTA: 911 services have been restored.

NEVADA: 911 services have been restored in Las Vegas and Henderson (Source: State Police)

WASHINGTON: Amber Alert for 1-year-old Roman Huizar from West Richland, WA. Suspect: Former police officer Elias Huizar, accused of killing his ex-wife and his girlfriend. Call 911 if seen. (Source: State Patrol)

MASSACHUSETTS: Outage affecting 911 across the state. If you have an emergency, call the 10-digit number for your local police or fire department.

NATIONAL: Outage affecting 911 lines in multiple states. If you have an emergency, call the 10-digit number for your local police or fire department.