Alert archive / Montana / Fallon County

Weather alerts in Fallon County, Montana, 2008

102 weather alerts in 2008, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Fallon County and its neighbors

Each county as a circle sized by its count in 2008. Tap one for its archive.

Alerts
102
Warnings
30
Watches
24
Advisories
21
Busiest month
July23 alerts
Busiest day
July 27, 20086 alerts

Over time

By month

Warning verification

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

Fallon County, 2008

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings9367%1100%51 min
Flash flood warnings00

Each office's whole area, 2008

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Billings, MT: tornado warnings110%250%7 min
NWS Billings, MT: severe thunderstorm warnings1878057%14079%27 min
NWS Billings, MT: flash flood warnings8363%683%155 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
Jan 14, 3:51 AM MSTHigh Wind WatchBYZ23 hr
Jan 16, 3:09 AM MSTWinter Storm WatchBYZ13 hr
Jan 16, 3:41 PM MSTWinter Storm WarningBYZ49 hr
Jan 19, 3:28 PM MSTWind Chill AdvisoryBYZ13 hr
Jan 21, 6:33 PM MSTWind Chill AdvisoryBYZ15 hr
Jan 22, 2:49 PM MSTSnow and Blowing Snow AdvisoryBYZ17 hr
Jan 27, 2:40 PM MSTWinter Weather AdvisoryBYZ31 hr
Jan 28, 9:24 PM MSTWind Chill WarningBYZ20 hr
Jan 28, 9:24 PM MSTWind Chill AdvisoryBYZ38 hr
Feb 3, 3:38 AM MSTSnow AdvisoryBYZ30 hr
Feb 8, 4:00 AM MSTWinter Weather AdvisoryBYZ41 hr
Feb 10, 2:54 PM MSTSnow AdvisoryBYZ24 hr
Feb 13, 9:25 PM MSTWind Chill AdvisoryBYZ9 hr
Feb 16, 6:43 AM MSTFreezing Rain AdvisoryBYZ3 hr
Feb 20, 3:09 AM MSTWind Chill AdvisoryBYZ8 hr
Mar 25, 2:57 PM MDTWinter Storm WatchBYZ45 hr
Apr 5, 4:13 AM MDTWinter Storm WarningBYZ24 hr
Apr 19, 9:41 AM MDTRed Flag WarningBYZ11 hr
Apr 22, 3:21 AM MDTRed Flag WarningBYZ17 hr
Apr 28, 3:03 PM MDTFire Weather WatchBYZ15 hr
Apr 29, 5:59 AM MDTRed Flag WarningBYZ17 hr
Apr 30, 9:40 AM MDTWinter Storm WatchBYZ30 hr
May 1, 4:26 AM MDTWinter Storm WarningBYZ29 hr
May 1, 3:28 PM MDTSnow AdvisoryBYZ15 hr
May 21, 3:41 PM MDTHigh Wind WatchBYZ13 hr
May 22, 9:32 AM MDTHigh Wind WarningBYZ19 hr
Jun 10, 3:46 AM MDTFlash Flood WatchBYZ17 hr
Jun 13, 4:33 PM MDTMesoscale DiscussionSPC87 min
Jun 17, 12:40 PM MDTMesoscale DiscussionSPC65 min
Jun 17, 1:27 PM MDTSevere Thunderstorm WatchSPC8 hr
Jun 17, 6:29 PM MDTMesoscale DiscussionSPC61 min
Jun 22, 4:11 PM MDTMesoscale DiscussionSPC94 min
Jun 22, 6:00 PM MDTSevere Thunderstorm WatchSPC7 hr
Jun 22, 8:30 PM MDTMesoscale DiscussionSPC60 min
Jun 23, 4:13 PM MDTMesoscale DiscussionSPC62 min
Jun 24, 2:44 PM MDTSevere Thunderstorm WatchSPC4 hr
Jun 25, 7:49 PM MDTMesoscale DiscussionSPC86 min
Jun 26, 12:41 PM MDTMesoscale DiscussionSPC94 min
Jul 6, 1:32 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 6, 6:08 PM MDTMesoscale DiscussionSPC67 min
Jul 10, 3:39 PM MDTRed Flag WarningBYZ26 hr
Jul 10, 3:59 PM MDTHigh Wind WatchBYZ10 hr
Jul 11, 2:28 AM MDTHigh Wind WarningBYZ15 hr
Jul 18, 1:30 PM MDTSevere Thunderstorm WarningBYZ45 min
Jul 18, 1:33 PM MDTSevere Thunderstorm WatchSPC7 hr
Jul 18, 3:11 PM MDTSevere Thunderstorm WarningBYZ64 min
Jul 18, 3:32 PM MDTMesoscale DiscussionSPC88 min
Jul 18, 4:12 PM MDTSevere Thunderstorm WarningBYZ33 min
Jul 22, 3:24 PM MDTSevere Thunderstorm WatchSPC10 hr
Jul 22, 8:03 PM MDTMesoscale DiscussionSPC87 min
Jul 22, 9:54 PM MDTMesoscale DiscussionSPC96 min
Jul 23, 12:32 AM MDTMesoscale DiscussionSPC58 min
Jul 26, 1:44 PM MDTMesoscale DiscussionSPC61 min
Jul 26, 5:48 PM MDTMesoscale DiscussionSPC117 min
Jul 26, 8:57 PM MDTSevere Thunderstorm WatchSPC6 hr
Jul 26, 10:21 PM MDTSevere Thunderstorm WarningBYZ54 min
Jul 26, 11:09 PM MDTSevere Thunderstorm WarningBYZ66 min
Jul 27, 12:15 AM MDTSevere Thunderstorm WarningBYZ30 min
Jul 27, 1:12 AM MDTSevere Thunderstorm WarningBYZ30 min
Jul 27, 1:25 AM MDTMesoscale DiscussionSPC95 min
Jul 28, 2:02 AM MDTMesoscale DiscussionSPC88 min
Aug 2, 8:28 PM MDTMesoscale DiscussionSPC62 min
Aug 2, 11:05 PM MDTSevere Thunderstorm WatchSPC8 hr
Aug 2, 11:41 PM MDTSevere Thunderstorm WarningBYZ64 min
Aug 3, 8:03 PM MDTMesoscale DiscussionSPC117 min
Aug 3, 9:49 PM MDTSevere Thunderstorm WatchSPC7 hr
Aug 3, 11:00 PM MDTSevere Thunderstorm WarningBYZ60 min
Aug 5, 4:58 PM MDTSevere Thunderstorm WatchSPC6 hr
Aug 10, 12:10 PM MDTMesoscale DiscussionSPC95 min
Aug 10, 12:46 PM MDTSevere Thunderstorm WatchSPC9 hr
Aug 10, 4:28 PM MDTMesoscale DiscussionSPC62 min
Aug 21, 2:33 PM MDTMesoscale DiscussionSPC117 min
Aug 25, 3:31 AM MDTRed Flag WarningBYZ38 hr
Aug 27, 3:41 AM MDTRed Flag WarningBYZ17 hr
Aug 29, 4:26 AM MDTFire Weather WatchBYZ11 hr
Aug 29, 3:45 PM MDTRed Flag WarningBYZ29 hr
Sep 19, 3:06 PM MDTFire Weather WatchBYZ12 hr
Sep 20, 3:32 AM MDTRed Flag WarningBYZ18 hr
Oct 9, 4:12 AM MDTWinter Storm WatchBYZ12 hr
Oct 9, 4:16 PM MDTWinter Storm WarningBYZ71 hr
Oct 11, 10:29 PM MDTMesoscale DiscussionSPC4 hr
Oct 25, 3:16 AM MDTHigh Wind WatchBYZ24 hr
Oct 26, 3:28 AM MDTHigh Wind WarningBYZ11 hr
Nov 5, 3:27 AM MSTWinter Weather AdvisoryBYZ36 hr
Nov 14, 1:17 PM MSTMesoscale DiscussionSPC58 min
Nov 21, 2:46 AM MSTWinter Weather AdvisoryBYZ16 hr
Dec 6, 7:11 PM MSTFreezing Rain AdvisoryBYZ4 hr
Dec 11, 3:40 PM MSTWinter Storm WatchBYZ24 hr
Dec 12, 3:48 PM MSTBlizzard WarningBYZ35 hr
Dec 12, 3:48 PM MSTWinter Storm WarningBYZ35 hr
Dec 13, 10:35 AM MSTMesoscale DiscussionSPC4 hr
Dec 13, 5:29 PM MSTMesoscale DiscussionSPC4 hr
Dec 13, 9:16 PM MSTWind Chill AdvisoryBYZ31 hr
Dec 14, 9:34 AM MSTWind Chill WarningBYZ24 hr
Dec 18, 9:28 PM MSTWinter Weather AdvisoryBYZ24 hr
Dec 19, 9:15 PM MSTWind Chill AdvisoryBYZ27 hr
Dec 20, 3:38 PM MSTWind Chill WarningBYZ18 hr
Dec 22, 4:20 AM MSTWind Chill AdvisoryBYZ7 hr
Dec 22, 4:20 AM MSTWinter Weather AdvisoryBYZ35 hr
Dec 25, 2:18 PM MSTWinter Storm WarningBYZ31 hr
Dec 25, 2:18 PM MSTWinter Weather AdvisoryBYZ26 hr
Dec 26, 10:56 AM MSTMesoscale DiscussionSPC4 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 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.