Did you feel the M3.7 #earthquake in L.A. just after midnight and wonder, “Hey, where's my alert on my phone?” Apps and @fema WEA didn’t deliver alerts because the event did not meet the minimum #ShakeAlert alerting thresholds for either delivery pathway. earthquake.usgs.gov/earthquakes/ev…
Apps only deliver alerts to people who could feel MMI 3+ (weak shaking) or greater for quakes M4.5+ and @fema WEA alerts go to those who could feel MMI 4+ (light shaking) or greater for quakes M 5+.
You won’t get an alert for every earthquake possible because you'd be getting A LOT of alerts. Even if you don't get an alert but feel shaking, it’s a great time to practice "Drop, Cover, and Hold On", if you can.
In bed and feel shaking or get an alert? Do not get out of bed. Lie face down to protect your vital organs, and Cover your head and neck with a pillow, keeping your arms as close to your head as possible. Hold On to your head and neck with both hands until shaking stops.
Learn more from @ECA at: earthquakecountry.org/step5/
@ShakeOut @waShakeOut @Cal_OES @waEMD @OregonOEM
Take care everyone!
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