Alert archive / California / Monterey County

Weather alerts in Monterey County, California, 2008

52 weather alerts in 2008, 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 2008. Tap one for its archive.

Alerts
52
Warnings
11
Watches
11
Advisories
28
Busiest month
January14 alerts
Busiest day
December 25, 20084 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, 2008

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings20100%0
Flash flood warnings20100%0

Each office's whole area, 2008

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS San Francisco Bay Area, CA: severe thunderstorm warnings30100%10%
NWS San Francisco Bay Area, CA: flash flood warnings50100%0

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 2, 2:08 PM PSTHigh Wind WatchMTR15 hr
Jan 3, 3:43 AM PSTHigh Wind WarningMTR41 hr
Jan 3, 9:29 AM PSTWind AdvisoryMTR7 hr
Jan 3, 4:56 PM PSTFlash Flood WatchMTR23 hr
Jan 4, 12:22 PM PSTFlash Flood WarningMTR4 hr
Jan 4, 9:06 PM PSTWind AdvisoryMTR3 hr
Jan 21, 4:43 AM PSTSnow AdvisoryMTR29 hr
Jan 24, 8:06 AM PSTSnow AdvisoryMTR23 hr
Jan 24, 1:34 PM PSTFlood WatchMTR36 hr
Jan 24, 1:59 PM PSTWind AdvisoryMTR38 hr
Jan 27, 2:46 AM PSTWind AdvisoryMTR4 hr
Jan 27, 12:10 PM PSTMesoscale DiscussionSPC2 hr
Jan 27, 12:48 PM PSTSevere Thunderstorm WatchSPC5 hr
Jan 27, 4:06 PM PSTMesoscale DiscussionSPC54 min
Feb 21, 2:52 PM PSTHigh Wind WatchMTR22 hr
Feb 22, 1:13 PM PSTHigh Wind WarningMTR39 hr
Feb 22, 1:13 PM PSTWind AdvisoryMTR52 hr
Mar 15, 6:15 PM PDTSevere Thunderstorm WarningMTR30 min
Mar 15, 6:49 PM PDTSevere Thunderstorm WarningMTR41 min
May 12, 2:08 PM PDTExcessive Heat WatchMTR3 days
May 14, 2:26 PM PDTHeat AdvisoryMTR30 hr
May 15, 3:14 PM PDTHeat AdvisoryMTR29 hr
May 16, 2:42 PM PDTExcessive Heat WatchMTR24 hr
May 16, 2:42 PM PDTHeat AdvisoryMTR28 hr
Jun 19, 10:45 AM PDTHeat AdvisoryMTR57 hr
Jun 21, 12:54 PM PDTRed Flag WarningMTR5 hr
Jul 6, 5:00 AM PDTExcessive Heat WatchMTR58 hr
Jul 6, 3:18 PM PDTFire Weather WatchMTR23 hr
Jul 7, 1:52 PM PDTHeat AdvisoryMTR49 hr
Jul 7, 2:21 PM PDTRed Flag WarningMTR4 days
Jul 8, 8:18 AM PDTExcessive Heat WarningMTR67 hr
Jul 9, 2:49 PM PDTHeat AdvisoryMTR37 hr
Sep 27, 8:08 AM PDTDense Fog AdvisoryMTR95 min
Oct 8, 10:57 AM PDTFire Weather WatchMTR18 hr
Oct 8, 2:22 PM PDTWind AdvisoryMTR67 hr
Oct 9, 4:57 AM PDTRed Flag WarningMTR5 days
Oct 11, 3:30 AM PDTFrost AdvisoryMTR29 hr
Oct 12, 8:51 PM PDTFrost AdvisoryMTR11 hr
Oct 30, 2:48 AM PDTWind AdvisoryMTR27 hr
Nov 3, 6:22 PM PSTFlash Flood WarningMTR23 min
Nov 12, 11:00 PM PSTDense Fog AdvisoryMTR11 hr
Nov 29, 7:33 PM PSTHigh Surf AdvisoryMTR22 hr
Dec 1, 2:04 AM PSTDense Fog AdvisoryMTR8 hr
Dec 15, 8:42 AM PSTWinter Weather AdvisoryMTR13 hr
Dec 16, 12:50 AM PSTWinter Weather AdvisoryMTR15 hr
Dec 16, 2:14 PM PSTFrost AdvisoryMTR19 hr
Dec 16, 2:14 PM PSTFreeze WarningMTR19 hr
Dec 23, 5:44 PM PSTWind AdvisoryMTR27 hr
Dec 24, 8:44 PM PSTHigh Surf AdvisoryMTR46 hr
Dec 25, 10:49 AM PSTFlash Flood WatchMTR6 hr
Dec 25, 12:30 PM PSTWinter Weather AdvisoryMTR5 hr
Dec 25, 1:50 PM PSTWind AdvisoryMTR12 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 Warning2
Severe Thunderstorm Watch1
Mesoscale Discussion2
Flooding
Flash Flood Warning2
Flash Flood Watch2
Flood Watch1
Winter
Snow Advisory2
Winter Weather Advisory3
Heat
Excessive Heat Warning1
Excessive Heat Watch3
Heat Advisory6
Cold
Freeze Warning1
Frost Advisory3
Wind and dust
High Wind Warning2
High Wind Watch2
Wind Advisory9
Fire
Red Flag Warning3
Fire Weather Watch2
Fog and smoke
Dense Fog Advisory3
Coast and beach
High Surf Advisory2

The busiest days

Days with the most alerts issued, by UTC date.

  1. December 25, 20084alerts
  2. January 24, 20083alerts
  3. January 27, 20083alerts
  4. December 16, 20083alerts
  5. January 3, 20082alerts
  6. January 4, 20082alerts
  7. February 22, 20082alerts
  8. March 16, 20082alerts
  9. May 16, 20082alerts
  10. July 6, 20082alerts

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive20072009

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.