Alert archive / California / Monterey County

Weather alerts in Monterey County, California, 2010

63 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Monterey County and its neighbors

Each county as a circle sized by its count in 2010. Tap one for its archive.

Alerts
63
Warnings
13
Watches
8
Advisories
37
Busiest month
January30 alerts
Busiest day
January 20, 201010 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

Monterey County, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings40100%0
Flash flood warnings00

Each office's whole area, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS San Francisco Bay Area, CA: tornado warnings30100%0
NWS San Francisco Bay Area, CA: severe thunderstorm warnings60100%90%
NWS San Francisco Bay Area, CA: flash flood warnings20100%10%

An office's figures cover every county it serves, including across state lines.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

The alerts

Every alert, in the order issued. Times are local, Pacific Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Jan 1, 3:23 AM PSTHigh Surf AdvisoryMTR34 hr
Jan 11, 2:53 AM PSTHigh Surf AdvisoryMTR12 hr
Jan 11, 2:41 PM PSTCoastal Flood WarningMTR41 hr
Jan 11, 2:41 PM PSTHigh Surf WarningMTR41 hr
Jan 17, 5:16 AM PSTHigh Wind WatchMTR9 hr
Jan 17, 2:45 PM PSTWind AdvisoryMTR24 hr
Jan 17, 6:39 PM PSTHigh Surf AdvisoryMTR33 hr
Jan 17, 8:05 PM PSTHigh Wind WarningMTR19 hr
Jan 18, 2:46 AM PSTHigh Surf WarningMTR3 days
Jan 18, 9:40 AM PSTAreal Flood AdvisoryMTR3 hr
Jan 18, 2:50 PM PSTWind AdvisoryMTR22 hr
Jan 18, 9:02 PM PSTCoastal Flood WatchMTR31 hr
Jan 18, 11:18 PM PSTHigh Wind WatchMTR14 hr
Jan 19, 12:51 PM PSTHigh Wind WarningMTR23 hr
Jan 19, 12:51 PM PSTWind AdvisoryMTR23 hr
Jan 19, 2:41 PM PSTSpecial Weather StatementMTR79 min
Jan 19, 5:06 PM PSTSpecial Weather StatementMTR54 min
Jan 19, 6:55 PM PSTSevere Thunderstorm WarningMTR18 min
Jan 20, 4:17 AM PSTCoastal Flood WarningMTR8 hr
Jan 20, 5:01 AM PSTAreal Flood AdvisoryMTR6 hr
Jan 20, 9:29 AM PSTSevere Thunderstorm WarningMTR22 min
Jan 20, 9:58 AM PSTMesoscale DiscussionSPC92 min
Jan 20, 2:21 PM PSTSevere Thunderstorm WarningMTR24 min
Jan 20, 2:42 PM PSTSevere Thunderstorm WarningMTR33 min
Jan 20, 2:55 PM PSTMesoscale DiscussionSPC95 min
Jan 20, 3:05 PM PSTSpecial Weather StatementMTR25 min
Jan 21, 2:23 PM PSTHigh Surf AdvisoryMTR38 hr
Jan 23, 6:40 AM PSTHigh Surf AdvisoryMTR8 hr
Jan 24, 2:37 PM PSTHigh Surf AdvisoryMTR33 hr
Jan 26, 12:14 AM PSTHigh Surf AdvisoryMTR9 hr
Feb 8, 1:45 PM PSTWinter Weather AdvisoryMTR22 hr
Feb 11, 2:39 PM PSTHigh Surf AdvisoryMTR4 days
Feb 13, 7:25 AM PSTDense Fog AdvisoryMTR3 hr
Mar 2, 8:34 PM PSTHigh Surf AdvisoryMTR8 hr
Mar 3, 7:51 AM PSTAreal Flood AdvisoryMTR65 min
Mar 29, 4:05 AM PDTHigh Surf AdvisoryMTR3 days
Apr 3, 9:59 AM PDTHigh Surf AdvisoryMTR22 hr
Apr 9, 2:04 PM PDTHigh Wind WatchMTR13 hr
Apr 10, 3:16 AM PDTWind AdvisoryMTR41 hr
Apr 20, 8:12 PM PDTWind AdvisoryMTR22 hr
Apr 21, 6:09 PM PDTWind AdvisoryMTR3 hr
Aug 23, 3:45 AM PDTExcessive Heat WatchMTR8 hr
Aug 23, 11:23 AM PDTHeat AdvisoryMTR56 hr
Oct 26, 4:03 AM PDTFrost AdvisoryMTR28 hr
Nov 1, 1:38 PM PDTHigh Surf AdvisoryMTR49 hr
Nov 8, 4:22 AM PSTFrost AdvisoryMTR25 hr
Nov 22, 1:26 PM PSTFreeze WatchMTR14 hr
Nov 22, 2:14 PM PSTWinter Weather AdvisoryMTR12 hr
Nov 23, 3:23 AM PSTFrost AdvisoryMTR30 hr
Nov 23, 3:23 AM PSTFreeze WatchMTR23 hr
Nov 23, 3:23 AM PSTFreeze WarningMTR30 hr
Nov 24, 2:48 AM PSTFrost AdvisoryMTR30 hr
Nov 24, 2:48 AM PSTFreeze WatchMTR24 hr
Nov 24, 2:48 AM PSTFreeze WarningMTR30 hr
Nov 25, 3:00 AM PSTFrost AdvisoryMTR30 hr
Nov 25, 3:00 AM PSTFreeze WarningMTR30 hr
Dec 4, 1:45 PM PSTWind AdvisoryMTR30 hr
Dec 10, 11:21 PM PSTDense Fog AdvisoryMTR10 hr
Dec 17, 9:48 PM PSTWind AdvisoryMTR8 hr
Dec 19, 4:50 AM PSTAreal Flood AdvisoryMTR4 hr
Dec 24, 3:02 AM PSTWind AdvisoryMTR37 hr
Dec 25, 1:43 PM PSTAreal Flood AdvisoryMTR2 hr
Dec 28, 4:28 AM PSTWind AdvisoryMTR24 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

ProductAlerts
Severe storms
Severe Thunderstorm Warning4
Mesoscale Discussion2
Special Weather Statement3
Flooding
Areal Flood Advisory5
Winter
Winter Weather Advisory2
Heat
Excessive Heat Watch1
Heat Advisory1
Cold
Freeze Warning3
Freeze Watch3
Frost Advisory5
Wind and dust
High Wind Warning2
High Wind Watch3
Wind Advisory10
Fog and smoke
Dense Fog Advisory2
Coast and beach
Coastal Flood Warning2
High Surf Warning2
Coastal Flood Watch1
High Surf Advisory12

The busiest days

Days with the most alerts issued, by UTC date.

  1. January 20, 201010alerts
  2. January 18, 20105alerts
  3. January 19, 20105alerts
  4. January 11, 20103alerts
  5. November 23, 20103alerts
  6. November 24, 20103alerts
  7. January 17, 20102alerts
  8. March 3, 20102alerts
  9. August 23, 20102alerts
  10. November 22, 20102alerts

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive20092011

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.