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Post ShakeAlert Message Summaries


Post ShakeAlert Message Summaries provide information about earthquakes detected by the ShakeAlert Earthquake Early Warning System and ShakeAlert’s performance during these events. They summarize how accurately the ShakeAlert System estimated the earthquake’s location and magnitude, how many seismic stations contributed data to these estimates, and how much warning time nearby cities may have received. These summaries are automatically generated for all USGS-issued ShakeAlert Messages with an estimated peak magnitude (M) of 3.5 or larger. Only at M 4.0 or larger are ShakeAlert Messages human-reviewed and forwarded to the National Earthquake Information Center to be posted at www.earthquake.usgs.gov. Summaries for earthquakes less than M 4.0 provide our scientists with more frequent tests of software readiness, but their results are generally not reviewed for quality or accuracy.

Please Note: USGS does not warrant that this information resource will be available without interruption, be error-free, or that any errors must be corrected. Post ShakeAlert Message Summaries are provided “AS IS” and without any warranty, express, implied, or otherwise, regarding its accuracy or performance. Any reliance upon this resource is at the express and sole risk of the user, including its employees, assigns, and insurers.

FileDate PostedSize
1393_2019-07-12_131138_7_miles_E_of_Ridgecrest_3_99.pdf
July 12, 2019 283.72 KB
1117_2019-07-04_173348_17_miles_NE_of_Ridgecrest_6_6.pdf
July 12, 2019 284.84 KB
1392_2019-07-12_095136_664_miles_N_of_Dorris_4_4.pdf
July 12, 2019 368.99 KB
1388_2019-07-11_161908_64_miles_N_of_Ridgecrest_3_46.pdf
July 11, 2019 294.74 KB
1387_2019-07-11_122042_44_miles_NE_of_Ridgecrest_3_52.pdf
July 11, 2019 270.22 KB
1386_2019-07-11_105945_44_miles_NE_of_Ridgecrest_3_6.pdf
July 11, 2019 270.11 KB
1385_2019-07-11_104335_47_miles_N_of_Ridgecrest_3_47.pdf
July 11, 2019 289.25 KB
1384_2019-07-11_102622_9_miles_E_of_Ridgecrest_1_37.pdf
July 11, 2019 277.21 KB
1383_2019-07-11_084802_30_miles_N_of_Ridgecrest_3_48.pdf
July 11, 2019 288.00 KB
1382_2019-07-11_070405_64_miles_N_of_Ridgecrest_3_86.pdf
July 11, 2019 296.19 KB
1381_2019-07-11_041842_19_miles_NE_of_Ridgecrest_1_28.pdf
July 11, 2019 274.20 KB
1380_2019-07-11_041001_51_miles_N_of_Ridgecrest_3_95.pdf
July 11, 2019 303.52 KB
1379_2019-07-11_004609_47_miles_N_of_Ridgecrest_3_35.pdf
July 11, 2019 289.50 KB
1378_2019-07-11_002017_10_miles_NE_of_Ridgecrest_1_44.pdf
July 11, 2019 276.30 KB
1376_2019-07-11_001539_61_miles_N_of_Ridgecrest_4_1.pdf
July 11, 2019 311.27 KB
1375_2019-07-11_001437_64_miles_N_of_Ridgecrest_4_16.pdf
July 11, 2019 298.06 KB
1374_2019-07-10_235859_17_miles_E_of_Ridgecrest_3_68.pdf
July 11, 2019 271.32 KB
1373_2019-07-10_221529_18_miles_N_of_Ridgecrest_1_16.pdf
July 10, 2019 267.05 KB
1372_2019-07-10_200951_13_miles_E_of_Ridgecrest_4_13.pdf
July 10, 2019 301.66 KB
1371_2019-07-10_194349_33_miles_N_of_Ridgecrest_1_21.pdf
July 10, 2019 275.89 KB
1370_2019-07-10_191502_57_miles_N_of_Ridgecrest_3_3.pdf
July 10, 2019 291.99 KB
1369_2019-07-10_185135_63_miles_N_of_Ridgecrest_3_68.pdf
July 10, 2019 295.72 KB
1368_2019-07-10_184901_62_miles_N_of_Ridgecrest_3_93.pdf
July 10, 2019 295.85 KB
1367_2019-07-10_145306_50_miles_N_of_Ridgecrest_3_49.pdf
July 10, 2019 292.92 KB
1366_2019-07-10_124912_19_miles_E_of_Ridgecrest_1_63.pdf
July 10, 2019 261.30 KB
1365_2019-07-10_122856_50_miles_N_of_Ridgecrest_3_85.pdf
July 10, 2019 293.38 KB
1364_2019-07-10_115959_12_miles_NE_of_Ridgecrest_1_23.pdf
July 10, 2019 274.75 KB
1363_2019-07-10_070526_50_miles_N_of_Ridgecrest_3_45.pdf
July 10, 2019 292.66 KB
1362_2019-07-10_034254_19_miles_E_of_Ridgecrest_3_56.pdf
July 10, 2019 269.85 KB
1361_2019-07-10_014302_31_miles_N_of_Ridgecrest_3_64.pdf
July 10, 2019 286.15 KB
1360_2019-07-10_004817_50_miles_N_of_Ridgecrest_3_68.pdf
July 10, 2019 293.27 KB
1359_2019-07-09_171128_18_miles_NE_of_Ridgecrest_3_57.pdf
July 09, 2019 270.48 KB
1358_2019-07-09_102144_41_miles_E_of_Ridgecrest_1_43.pdf
July 09, 2019 256.83 KB
1357_2019-07-09_040254_38_miles_NE_of_Ridgecrest_3_71.pdf
July 09, 2019 273.58 KB
1356_2019-07-08_225735_7_miles_E_of_Ridgecrest_1_87.pdf
July 08, 2019 280.98 KB
1355_2019-07-08_182038_22_miles_NE_of_Ridgecrest_1_46.pdf
July 08, 2019 253.35 KB
1354_2019-07-08_160428_15_miles_NE_of_Ridgecrest_3_8.pdf
July 08, 2019 271.83 KB
1353_2019-07-08_121457_21_miles_E_of_Ridgecrest_3_55.pdf
July 08, 2019 268.70 KB
1352_2019-07-08_095711_18_miles_E_of_Ridgecrest_3_57.pdf
July 08, 2019 270.01 KB
1351_2019-07-08_073158_62_miles_N_of_Ridgecrest_3_54.pdf
July 08, 2019 296.51 KB
1350_2019-07-08_055405_28_miles_N_of_Ridgecrest_3_55.pdf
July 08, 2019 288.30 KB
1349_2019-07-08_013658_57_miles_N_of_Ridgecrest_3_75.pdf
July 08, 2019 294.48 KB
1348_2019-07-07_233641_25_miles_N_of_Ridgecrest_2_22.pdf
July 07, 2019 275.33 KB
1347_2019-07-07_211529_36_miles_N_of_Ridgecrest_3_59.pdf
July 07, 2019 289.35 KB
1346_2019-07-07_184959_32_miles_N_of_Ridgecrest_1_23.pdf
July 07, 2019 284.21 KB
1345_2019-07-07_144640_32_miles_N_of_Ridgecrest_3_45.pdf
July 07, 2019 286.91 KB
1344_2019-07-07_112216_21_miles_N_of_Ridgecrest_4_02.pdf
July 07, 2019 277.84 KB
1343_2019-07-07_094123_17_miles_NE_of_Ridgecrest_3_5.pdf
July 07, 2019 273.92 KB
1342_2019-07-07_080325_54_miles_N_of_Ridgecrest_3_66.pdf
July 07, 2019 294.34 KB
1341_2019-07-07_072026_14_miles_NE_of_Ridgecrest_3_45.pdf
July 07, 2019 273.41 KB