2/28/2015 — Forecast Hit — Gulf of California / Baja Mexico earthquake warning area struck by 4.7 magnitude

Yesterday (February 27 2015) I issued new earthquake watch zones along the West Coast of the United States, Mexico, and South America.

8 new watch zones feb 27 2015 638pm cst

Above: Earthquake warning zones issued Feb. 27 2015 for possible noteworthy movement to occur.


Today (February 28, 2015) a 4.7M earthquake struck inside the warning zone marked with a red box over Mexico.

4.7 earthquake feb 28 2015

Above: Feb. 28, 2015 – Earthquake strikes directly in the warning zone issued after a few weeks of silence. Warned 20 hours prior to movement occurring.


Here are the statistics on this event from the USGS:


Event Location

Data Source US1

Map showing extent (w,s,e,n) = (-113.3654, 18.915, -103.3654, 28.915)
23.915°N 108.365°W depth=16.4 kmView interactive map

Event Time

  1. 2015-02-28 20:41:27 (UTC)
  2. 2015-02-28 14:41:27 (UTC-06:00) in your timezone
  3. Times in other timezones

Nearby Cities

  1. 111km (69mi) WSW of El Dorado, Mexico
  2. 116km (72mi) SW of Navolato, Mexico
  3. 117km (73mi) SW of Campo Gobierno, Mexico
  4. 124km (77mi) SW of Costa Rica, Mexico
  5. 1077km (669mi) WNW of Mexico City, Mexico
Magnitude / uncertainty 4.6 mb± 0.0
Location / uncertainty 23.915°N 108.365°W± 9.0 km
Depth / uncertainty 16.4 km± 5.1
Origin Time 2015-02-28 20:41:27.370 UTC
Number of Stations
Number of Phases 103
Minimum Distance 431.36 km (3.88°)
Travel Time Residual 1.44 sec
Azimuthal Gap 166°
FE Region Gulf of California (49)

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