Alert archive / New York / Cattaraugus County

Weather alerts in Cattaraugus County, New York, 2009

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

Cattaraugus County and its neighbors

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

Alerts
149
Warnings
52
Watches
23
Advisories
42
Busiest month
August33 alerts
Busiest day
August 10, 200910 alerts

Over time

By month

Warning verification

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

1 of 2 tornado warnings covering Cattaraugus County in 2009 had a tornado report inside them.

Cattaraugus County, 2009

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings2150%0
Severe thunderstorm warnings251444%1979%33 min
Flash flood warnings6350%475%63 min

Each office's whole area, 2009

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Buffalo, NY: tornado warnings7271%540%7 min
NWS Buffalo, NY: severe thunderstorm warnings1095748%13492%30 min
NWS Buffalo, NY: flash flood warnings291259%2789%51 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, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Jan 2, 3:21 AM ESTLake Effect Snow AdvisoryBUF23 hr
Jan 4, 4:39 PM ESTFreezing Rain AdvisoryBUF14 hr
Jan 6, 3:53 AM ESTWinter Weather AdvisoryBUF36 hr
Jan 7, 12:10 AM ESTMesoscale DiscussionSPC4 hr
Jan 7, 3:48 PM ESTLake Effect Snow WarningBUF48 hr
Jan 9, 3:56 PM ESTWinter Storm WarningBUF38 hr
Jan 10, 7:58 PM ESTMesoscale DiscussionSPC4 hr
Jan 12, 3:09 PM ESTWinter Weather AdvisoryBUF31 hr
Jan 13, 3:42 PM ESTLake Effect Snow AdvisoryBUF13 hr
Jan 14, 4:21 AM ESTLake Effect Snow WatchBUF42 hr
Jan 14, 3:32 PM ESTLake Effect Snow WarningBUF71 hr
Jan 15, 4:29 AM ESTWind Chill WarningBUF11 hr
Jan 15, 3:46 PM ESTWind Chill AdvisoryBUF43 hr
Jan 17, 2:07 PM ESTWinter Weather AdvisoryBUF32 hr
Jan 26, 3:42 PM ESTWinter Storm WatchBUF20 hr
Jan 27, 11:48 AM ESTWinter Storm WarningBUF34 hr
Jan 28, 12:31 AM ESTMesoscale DiscussionSPC5 hr
Feb 10, 3:12 PM ESTHigh Wind WatchBUF23 hr
Feb 11, 2:34 PM ESTHigh Wind WarningBUF21 hr
Feb 11, 3:27 PM ESTWinter Weather AdvisoryBUF33 hr
Feb 11, 8:00 PM ESTMesoscale DiscussionSPC60 min
Feb 11, 8:19 PM ESTSevere Thunderstorm WatchSPC3 hr
Feb 12, 11:39 AM ESTWind AdvisoryBUF6 hr
Feb 12, 7:40 PM ESTRiver Flood WarningBUF15 hr
Feb 18, 12:38 PM ESTMesoscale DiscussionSPC3 hr
Feb 18, 3:18 PM ESTWinter Weather AdvisoryBUF55 hr
Feb 18, 7:33 PM ESTWinter Weather AdvisoryBUF3 hr
Feb 22, 4:09 AM ESTLake Effect Snow AdvisoryBUF41 hr
Feb 26, 3:33 PM ESTWind AdvisoryBUF23 hr
Mar 1, 3:12 PM ESTWind Chill AdvisoryBUF16 hr
Mar 2, 3:29 PM ESTWind Chill AdvisoryBUF18 hr
Mar 7, 11:46 AM ESTFlood WatchBUF44 hr
Mar 9, 8:36 AM EDTRiver Flood WarningBUF15 hr
Mar 9, 8:36 AM EDTRiver Flood WarningBUF14 hr
Mar 9, 10:28 PM EDTFlood WatchBUF36 hr
Mar 10, 9:36 PM EDTWind AdvisoryBUF24 hr
Mar 11, 2:58 AM EDTRiver Flood WarningBUF24 hr
Apr 3, 4:29 AM EDTWind AdvisoryBUF40 hr
Apr 5, 4:52 AM EDTWinter Storm WatchBUF34 hr
Apr 6, 3:04 PM EDTLake Effect Snow WarningBUF44 hr
Apr 7, 9:51 PM EDTLake Effect Snow AdvisoryBUF7 hr
Apr 20, 3:20 AM EDTWind AdvisoryBUF18 hr
Apr 24, 6:24 PM EDTSevere Thunderstorm WarningBUF36 min
Apr 24, 6:51 PM EDTMesoscale DiscussionSPC54 min
Apr 24, 6:59 PM EDTSevere Thunderstorm WarningBUF25 min
Apr 25, 1:24 PM EDTMesoscale DiscussionSPC66 min
May 9, 4:07 AM EDTWind AdvisoryBUF20 hr
May 9, 12:43 PM EDTSevere Thunderstorm WatchSPC6 hr
May 16, 12:05 PM EDTMesoscale DiscussionSPC55 min
May 16, 1:00 PM EDTSevere Thunderstorm WatchSPC7 hr
May 16, 3:55 PM EDTMesoscale DiscussionSPC65 min
May 17, 4:48 AM EDTFreeze WarningBUF27 hr
May 18, 3:04 PM EDTFreeze WarningBUF16 hr
May 27, 8:41 PM EDTAreal Flood AdvisoryBUF3 hr
May 28, 4:54 PM EDTMesoscale DiscussionSPC66 min
May 30, 3:34 PM EDTFreeze WatchBUF21 hr
May 31, 12:10 PM EDTFrost AdvisoryBUF20 hr
Jun 20, 9:03 AM EDTAreal Flood AdvisoryBUF3 hr
Jun 25, 12:38 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 25, 3:00 PM EDTSevere Thunderstorm WarningBUF28 min
Jun 25, 3:51 PM EDTMesoscale DiscussionSPC54 min
Jun 25, 6:14 PM EDTMesoscale DiscussionSPC91 min
Jun 25, 8:01 PM EDTSevere Thunderstorm WarningBUF31 min
Jun 29, 10:17 PM EDTFlash Flood WarningBUF58 min
Jul 2, 10:05 AM EDTFlash Flood WatchBUF10 hr
Jul 11, 10:21 AM EDTSevere Thunderstorm WarningBUF43 min
Jul 11, 10:31 AM EDTMesoscale DiscussionSPC59 min
Jul 11, 10:57 AM EDTSevere Thunderstorm WatchSPC7 hr
Jul 11, 11:38 AM EDTSevere Thunderstorm WarningBUF29 min
Jul 11, 11:52 AM EDTFlash Flood WarningBUF3 hr
Jul 11, 12:15 PM EDTSevere Thunderstorm WarningBUF45 min
Jul 11, 12:52 PM EDTSevere Thunderstorm WarningBUF38 min
Jul 11, 7:02 PM EDTSevere Thunderstorm WarningBUF43 min
Jul 11, 7:06 PM EDTMesoscale DiscussionSPC114 min
Jul 11, 8:27 PM EDTSevere Thunderstorm WarningBUF48 min
Jul 17, 11:08 PM EDTSevere Thunderstorm WarningBUF39 min
Jul 21, 1:56 PM EDTMesoscale DiscussionSPC64 min
Jul 23, 7:01 AM EDTAreal Flood AdvisoryBUF2 hr
Jul 24, 1:14 PM EDTSevere Thunderstorm WarningBUF61 min
Jul 25, 3:05 PM EDTMesoscale DiscussionSPC55 min
Jul 25, 3:50 PM EDTSevere Thunderstorm WatchSPC5 hr
Jul 26, 12:56 PM EDTMesoscale DiscussionSPC2 hr
Jul 26, 6:59 PM EDTTornado WarningBUF46 min
Jul 26, 7:46 PM EDTSevere Thunderstorm WarningBUF37 min
Jul 29, 6:57 PM EDTAreal Flood AdvisoryBUF97 min
Aug 4, 6:09 PM EDTMesoscale DiscussionSPC66 min
Aug 9, 11:36 AM EDTMesoscale DiscussionSPC24 min
Aug 9, 11:57 AM EDTSevere Thunderstorm WatchSPC6 hr
Aug 9, 12:51 PM EDTSevere Thunderstorm WarningBUF54 min
Aug 9, 1:35 PM EDTSevere Thunderstorm WarningBUF55 min
Aug 9, 1:57 PM EDTSevere Thunderstorm WarningBUF63 min
Aug 9, 2:07 PM EDTTornado WarningBUF39 min
Aug 9, 2:18 PM EDTFlash Flood WarningBUF84 min
Aug 9, 2:45 PM EDTMesoscale DiscussionSPC60 min
Aug 9, 7:11 PM EDTMesoscale DiscussionSPC2 hr
Aug 9, 8:47 PM EDTSevere Thunderstorm WatchSPC4 hr
Aug 9, 10:19 PM EDTSevere Thunderstorm WarningBUF71 min
Aug 9, 10:47 PM EDTMesoscale DiscussionSPC118 min
Aug 9, 10:50 PM EDTSevere Thunderstorm WarningBUF70 min
Aug 9, 11:26 PM EDTFlash Flood WarningBUF3 hr
Aug 10, 12:01 AM EDTSevere Thunderstorm WarningBUF59 min
Aug 10, 12:56 AM EDTRiver Flood WarningBUF13 hr
Aug 10, 4:25 AM EDTFlash Flood WatchBUF17 hr
Aug 10, 2:26 PM EDTMesoscale DiscussionSPC2 hr
Aug 10, 3:13 PM EDTSevere Thunderstorm WatchSPC8 hr
Aug 11, 5:17 AM EDTFlash Flood WarningBUF3 hr
Aug 11, 12:39 PM EDTMesoscale DiscussionSPC2 hr
Aug 11, 2:20 PM EDTAreal Flood AdvisoryBUF3 hr
Aug 12, 4:34 PM EDTFlash Flood WarningBUF3 hr
Aug 13, 3:47 AM EDTDense Fog AdvisoryBUF5 hr
Aug 18, 2:19 PM EDTSevere Thunderstorm WarningBUF56 min
Aug 18, 2:32 PM EDTMesoscale DiscussionSPC88 min
Aug 20, 6:20 PM EDTMesoscale DiscussionSPC55 min
Aug 20, 6:54 PM EDTSevere Thunderstorm WatchSPC5 hr
Aug 20, 8:52 PM EDTAreal Flood AdvisoryBUF3 hr
Aug 20, 8:59 PM EDTSevere Thunderstorm WarningBUF61 min
Aug 20, 9:52 PM EDTSevere Thunderstorm WarningBUF53 min
Aug 20, 10:40 PM EDTMesoscale DiscussionSPC95 min
Sep 19, 4:36 AM EDTFrost AdvisoryBUF27 hr
Sep 27, 3:43 PM EDTWind AdvisoryBUF30 hr
Sep 28, 10:37 AM EDTSevere Thunderstorm WarningBUF68 min
Sep 28, 10:49 AM EDTMesoscale DiscussionSPC56 min
Sep 28, 7:43 PM EDTAreal Flood WarningBUF6 hr
Oct 1, 10:35 PM EDTFrost AdvisoryBUF7 hr
Oct 6, 3:57 PM EDTWind AdvisoryBUF28 hr
Oct 10, 3:43 PM EDTFrost AdvisoryBUF6 hr
Oct 11, 4:09 AM EDTFreeze WarningBUF29 hr
Oct 15, 4:16 AM EDTWinter Storm WatchBUF8 hr
Oct 15, 11:46 AM EDTWinter Weather AdvisoryBUF44 hr
Oct 30, 3:44 PM EDTWind AdvisoryBUF26 hr
Dec 8, 4:33 AM ESTHigh Wind WatchBUF11 hr
Dec 8, 3:48 PM ESTHigh Wind WarningBUF42 hr
Dec 8, 4:05 PM ESTWinter Storm WatchBUF24 hr
Dec 8, 4:05 PM ESTWinter Weather AdvisoryBUF20 hr
Dec 8, 11:32 PM ESTMesoscale DiscussionSPC6 hr
Dec 9, 11:02 AM ESTMesoscale DiscussionSPC88 min
Dec 9, 1:21 PM ESTSevere Thunderstorm WarningBUF54 min
Dec 9, 1:51 PM ESTSevere Thunderstorm WarningBUF29 min
Dec 9, 3:49 PM ESTLake Effect Snow WarningBUF66 hr
Dec 10, 9:44 AM ESTWind AdvisoryBUF18 hr
Dec 11, 9:27 PM ESTMesoscale DiscussionSPC4 hr
Dec 13, 4:02 AM ESTFreezing Rain AdvisoryBUF11 hr
Dec 13, 5:16 AM ESTMesoscale DiscussionSPC4 hr
Dec 24, 4:07 PM ESTWinter Weather AdvisoryBUF36 hr
Dec 25, 3:11 PM ESTWind AdvisoryBUF13 hr
Dec 27, 4:34 AM ESTLake Effect Snow WatchBUF11 hr
Dec 27, 3:23 PM ESTWinter Weather AdvisoryBUF19 hr
Dec 28, 5:30 AM ESTLake Effect Snow WarningBUF34 hr
Dec 28, 5:30 AM ESTLake Effect Snow AdvisoryBUF47 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.