April 30 2010 near 4 pm est a 5.0 magnitude struck Napa Valley. The anchor on Fox News reported this quake and the USGS site had it shown.
Magnitude 5.0 - NORTHERN CALIFORNIA
2010 April 30 19:43:00 UTC
Details
Maps
Scientific & Technical
Earthquake Details
Magnitude 5.0
Date-Time Friday, April 30, 2010 at 19:43:00 UTC
Friday, April 30, 2010 at 12:43:00 PM at epicenter
Location 38.370°N, 122.205°W
Depth 5 km (3.1 miles) (poorly constrained)
Region NORTHERN CALIFORNIA
Distances 11 km (7 miles) NE (48°) from Napa, CA
13 km (8 miles) NNW (344°) from Green Valley, CA
14 km (9 miles) ESE (105°) from Yountville, CA
29 km (18 miles) N (5°) from Vallejo, CA
64 km (40 miles) N (2°) from Oakland, CA
Location Uncertainty horizontal +/- 14.9 km (9.3 miles); depth +/- 17.7 km (11.0 miles)
Parameters Nph= 5, Dmin=65 km, Rmss=0.2 sec, Gp=209°,
M-type=duration magnitude (Md), Version=0
Source California Integrated Seismic Net:
USGS Caltech CGS UCB UCSD UNR
Event ID nc71390496
By 4:30 est, the USGS site had no record of this quake to be found. I sent them an email questioning their deletion. A 5.0 quake is felt. It isn't a little 2.5 that barely rattles the dishes. This isn't the first time I have noticed this. Curious to see what kind of reply i receive.
To: sfarris@usgs.gov
Sent: 4/30/2010 4:43:59 P.M. Eastern Daylight Time
Subj: Where did 5.0 go?
Hello, I am curious as to where this 5.0 quake went. Fox news even mentioned it on air. I wouldn't think a 5.0 earthquake would disappear or be a mistake? Please explain.
Magnitude 5.0 - NORTHERN CALIFORNIA
2010 April 30 19:43:00 UTC
Details
Maps
Scientific & Technical
Earthquake Details
Magnitude 5.0
Date-Time Friday, April 30, 2010 at 19:43:00 UTC
Friday, April 30, 2010 at 12:43:00 PM at epicenter
Location 38.370°N, 122.205°W
Depth 5 km (3.1 miles) (poorly constrained)
Region NORTHERN CALIFORNIA
Distances 11 km (7 miles) NE (48°) from Napa, CA
13 km (8 miles) NNW (344°) from Green Valley, CA
14 km (9 miles) ESE (105°) from Yountville, CA
29 km (18 miles) N (5°) from Vallejo, CA
64 km (40 miles) N (2°) from Oakland, CA
Location Uncertainty horizontal +/- 14.9 km (9.3 miles); depth +/- 17.7 km (11.0 miles)
Parameters Nph= 5, Dmin=65 km, Rmss=0.2 sec, Gp=209°,
M-type=duration magnitude (Md), Version=0
Source California Integrated Seismic Net:
USGS Caltech CGS UCB UCSD UNR
Event ID nc71390496