Alert archive / Wyoming / Albany County

Weather alerts in Albany County, Wyoming, 2009

69 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Albany County and its neighbors

Each county as a circle sized by its count in 2009. Tap one for its archive.

Alerts
69
Warnings
27
Watches
12
Advisories
20
Busiest month
December19 alerts
Busiest day
June 23, 20093 alerts

Over time

By month

Warning verification

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

Albany County, 2009

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings12558%520%3 min
Flash flood warnings20100%0

Each office's whole area, 2009

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Cheyenne, WY: tornado warnings281064%2669%18 min
NWS Cheyenne, WY: severe thunderstorm warnings1868654%22766%20 min
NWS Cheyenne, WY: flash flood warnings251444%2669%70 min

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, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Apr 4, 4:57 AM MDTMesoscale DiscussionSPC4 hr
May 30, 4:18 PM MDTMesoscale DiscussionSPC87 min
Jun 5, 2:18 PM MDTMesoscale DiscussionSPC87 min
Jun 8, 2:03 PM MDTMesoscale DiscussionSPC87 min
Jun 13, 1:56 PM MDTTornado WatchSPC9 hr
Jun 13, 4:23 PM MDTSevere Thunderstorm WarningCYS67 min
Jun 23, 3:39 PM MDTSevere Thunderstorm WarningCYS66 min
Jun 23, 3:51 PM MDTAreal Flood AdvisoryCYS3 hr
Jun 23, 4:31 PM MDTFlash Flood WarningCYS4 hr
Jul 1, 12:33 PM MDTMesoscale DiscussionSPC117 min
Jul 2, 3:05 PM MDTSevere Thunderstorm WarningCYS40 min
Jul 2, 3:44 PM MDTSevere Thunderstorm WarningCYS41 min
Jul 2, 6:33 PM MDTSevere Thunderstorm WarningCYS39 min
Jul 2, 6:40 PM MDTFlash Flood WarningCYS2 hr
Jul 6, 1:40 PM MDTMesoscale DiscussionSPC95 min
Jul 7, 6:08 PM MDTSevere Thunderstorm WarningCYS52 min
Jul 12, 2:05 PM MDTMesoscale DiscussionSPC85 min
Jul 12, 5:02 PM MDTSevere Thunderstorm WarningCYS58 min
Jul 12, 5:23 PM MDTAreal Flood AdvisoryCYS3 hr
Jul 12, 6:10 PM MDTSevere Thunderstorm WarningCYS65 min
Jul 16, 8:40 PM MDTSevere Thunderstorm WarningCYS26 min
Jul 16, 9:02 PM MDTSevere Thunderstorm WarningCYS44 min
Jul 22, 1:16 PM MDTMesoscale DiscussionSPC89 min
Jul 25, 3:45 PM MDTAreal Flood AdvisoryCYS2 hr
Jul 27, 2:58 PM MDTSevere Thunderstorm WarningCYS47 min
Aug 15, 1:07 PM MDTMesoscale DiscussionSPC53 min
Aug 25, 1:41 PM MDTSevere Thunderstorm WarningCYS64 min
Oct 9, 4:18 AM MDTWinter Storm WatchCYS10 hr
Oct 9, 2:27 PM MDTWinter Weather AdvisoryCYS19 hr
Oct 10, 2:26 PM MDTWinter Weather AdvisoryCYS28 hr
Oct 12, 8:35 PM MDTFreezing Fog AdvisoryCYS13 hr
Oct 12, 10:19 PM MDTFreezing Rain AdvisoryCYS10 hr
Oct 13, 8:38 AM MDTWinter Weather AdvisoryCYS82 min
Oct 14, 3:24 AM MDTHigh Wind WarningCYS15 hr
Oct 23, 9:47 AM MDTHigh Wind WarningCYS23 hr
Oct 25, 12:27 PM MDTHigh Wind WatchCYS34 hr
Oct 26, 4:30 PM MDTWinter Storm WatchCYS36 hr
Oct 27, 5:19 AM MDTWinter Storm WarningCYS66 hr
Oct 28, 12:13 PM MDTMesoscale DiscussionSPC6 hr
Oct 29, 9:30 PM MDTWinter Weather AdvisoryCYS21 hr
Oct 30, 11:03 PM MDTHigh Wind WarningCYS6 hr
Nov 5, 3:47 AM MSTHigh Wind WatchCYS11 hr
Nov 5, 2:18 PM MSTHigh Wind WarningCYS25 hr
Nov 11, 3:24 PM MSTWinter Weather AdvisoryCYS44 hr
Nov 12, 7:53 PM MSTWinter Weather AdvisoryCYS19 hr
Nov 13, 2:34 PM MSTWinter Storm WatchCYS21 hr
Nov 14, 11:20 AM MSTWinter Storm WarningCYS19 hr
Nov 14, 11:20 AM MSTWinter Weather AdvisoryCYS19 hr
Nov 21, 9:14 AM MSTHigh Wind WarningCYS3 hr
Nov 24, 2:41 AM MSTHigh Wind WarningCYS4 hr
Dec 4, 3:02 AM MSTHigh Wind WarningCYS17 hr
Dec 5, 3:43 AM MSTWinter Storm WatchCYS18 hr
Dec 5, 5:00 PM MSTWinter Weather AdvisoryCYS21 hr
Dec 7, 2:04 AM MSTWinter Storm WatchCYS12 hr
Dec 7, 1:45 PM MSTWinter Weather AdvisoryCYS23 hr
Dec 8, 2:49 PM MSTWind Chill AdvisoryCYS20 hr
Dec 8, 2:49 PM MSTWinter Weather AdvisoryCYS45 hr
Dec 9, 3:19 AM MSTHigh Wind WatchCYS6 hr
Dec 9, 5:33 AM MSTHigh Wind WarningCYS35 hr
Dec 9, 2:44 PM MSTWind Chill AdvisoryCYS18 hr
Dec 12, 1:18 PM MSTHigh Wind WarningCYS3 hr
Dec 12, 4:02 PM MSTWinter Weather AdvisoryCYS37 hr
Dec 14, 1:41 PM MSTHigh Wind WatchCYS15 hr
Dec 15, 5:04 AM MSTHigh Wind WarningCYS17 hr
Dec 20, 5:17 AM MSTHigh Wind WatchCYS8 hr
Dec 20, 1:22 PM MSTHigh Wind WarningCYS23 hr
Dec 21, 5:07 AM MSTWinter Storm WatchCYS23 hr
Dec 22, 4:22 AM MSTWinter Weather AdvisoryCYS46 hr
Dec 24, 1:34 PM MSTWinter Weather AdvisoryCYS51 hr

By product

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

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive20082010

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.