Alert archive / New York / Suffolk County

Weather alerts in Suffolk County, New York, 2015

179 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Suffolk County and its neighbors

Each county as a circle sized by its count in 2015. Tap one for its archive.

Alerts
179
Warnings
31
Watches
21
Advisories
75
Busiest month
January25 alerts
Busiest day
September 10, 201511 alerts

Over time

By month

Warning verification

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

Suffolk County, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings141121%5385%18 min
Flash flood warnings440%6100%83 min

Each office's whole area, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS New York, NY: severe thunderstorm warnings342332%13075%18 min
NWS New York, NY: flash flood warnings201525%5292%66 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 3, 10:54 PM ESTDense Fog AdvisoryOKX11 hr
Jan 6, 3:57 PM ESTWind Chill AdvisoryOKX41 hr
Jan 8, 9:54 PM ESTWind AdvisoryOKX12 hr
Jan 11, 3:20 AM ESTWinter Weather AdvisoryOKX36 hr
Jan 17, 3:30 PM ESTFreezing Rain AdvisoryOKX25 hr
Jan 18, 3:24 PM ESTSpecial Weather StatementOKX81 min
Jan 18, 3:51 PM ESTAreal Flood AdvisoryOKX114 min
Jan 18, 5:25 PM ESTSpecial Weather StatementOKX2 hr
Jan 18, 5:31 PM ESTSevere Thunderstorm WarningOKX44 min
Jan 23, 4:11 AM ESTWinter Weather AdvisoryOKX39 hr
Jan 23, 11:48 PM ESTMesoscale DiscussionSPC6 hr
Jan 25, 3:56 AM ESTBlizzard WatchOKX11 hr
Jan 25, 3:19 PM ESTBlizzard WarningOKX45 hr
Jan 25, 3:29 PM ESTCoastal Flood WatchOKX22 hr
Jan 26, 1:33 PM ESTCoastal Flood WarningOKX16 hr
Jan 26, 1:33 PM ESTCoastal Flood AdvisoryOKX17 hr
Jan 26, 6:33 PM ESTMesoscale DiscussionSPC5 hr
Jan 26, 11:32 PM ESTMesoscale DiscussionSPC4 hr
Jan 27, 1:55 AM ESTWinter Storm WarningOKX20 hr
Jan 27, 4:28 AM ESTMesoscale DiscussionSPC5 hr
Jan 27, 4:56 AM ESTCoastal Flood StatementOKX13 hr
Jan 27, 3:52 PM ESTWinter Weather AdvisoryOKX6 hr
Jan 30, 4:06 AM ESTWind AdvisoryOKX30 hr
Jan 31, 3:34 AM ESTWinter Storm WatchOKX36 hr
Jan 31, 3:50 PM ESTWinter Storm WarningOKX47 hr
Feb 1, 4:01 PM ESTWinter Weather AdvisoryOKX41 hr
Feb 2, 7:41 AM ESTAreal Flood AdvisoryOKX2 hr
Feb 2, 10:04 AM ESTAreal Flood AdvisoryOKX3 hr
Feb 8, 4:12 AM ESTWinter Weather AdvisoryOKX44 hr
Feb 13, 3:53 AM ESTWinter Storm WatchOKX12 hr
Feb 13, 4:00 AM ESTHigh Wind WatchOKX25 hr
Feb 13, 3:43 PM ESTWinter Storm WatchOKX13 hr
Feb 13, 3:43 PM ESTWinter Storm WarningOKX33 hr
Feb 13, 3:43 PM ESTWinter Weather AdvisoryOKX48 hr
Feb 14, 4:23 AM ESTBlizzard WarningOKX20 hr
Feb 14, 4:33 AM ESTWind AdvisoryOKX37 hr
Feb 14, 3:38 PM ESTHigh Wind WarningOKX24 hr
Feb 14, 3:51 PM ESTWind Chill AdvisoryOKX41 hr
Feb 16, 3:50 PM ESTWinter Weather AdvisoryOKX22 hr
Feb 19, 3:49 AM ESTWind Chill AdvisoryOKX30 hr
Feb 20, 4:20 PM ESTWinter Weather AdvisoryOKX43 hr
Feb 28, 3:13 PM ESTWinter Weather AdvisoryOKX33 hr
Mar 1, 1:57 PM ESTMesoscale DiscussionSPC5 hr
Mar 1, 3:34 PM ESTWinter Storm WarningOKX12 hr
Mar 2, 4:11 PM ESTWinter Weather AdvisoryOKX36 hr
Mar 3, 3:46 PM ESTWinter Storm WatchOKX24 hr
Mar 3, 7:01 PM ESTMesoscale DiscussionSPC4 hr
Mar 4, 4:23 AM ESTWinter Storm WarningOKX35 hr
Mar 4, 3:49 PM ESTWinter Weather AdvisoryOKX27 hr
Mar 10, 6:09 PM EDTDense Fog AdvisoryOKX13 hr
Mar 18, 11:51 AM EDTWind AdvisoryOKX7 hr
Mar 19, 4:18 AM EDTWinter Weather AdvisoryOKX55 hr
Mar 26, 6:20 AM EDTSpecial Weather StatementOKX3 hr
Mar 26, 2:40 PM EDTSpecial Weather StatementOKX50 min
Mar 26, 3:49 PM EDTDense Fog AdvisoryOKX6 hr
Mar 28, 9:51 PM EDTWinter Weather AdvisoryOKX8 hr
Apr 3, 3:17 PM EDTDense Fog AdvisoryOKX15 hr
Apr 10, 2:44 PM EDTDense Fog AdvisoryOKX7 hr
Apr 20, 2:14 PM EDTDense Fog AdvisoryOKX14 hr
Apr 20, 9:48 PM EDTCoastal Flood StatementOKX4 hr
Apr 22, 3:57 PM EDTSevere Thunderstorm WarningOKX22 min
Apr 22, 4:36 PM EDTSpecial Weather StatementOKX54 min
Apr 23, 4:00 AM EDTFreeze WatchOKX12 hr
Apr 23, 3:49 PM EDTFreeze WarningOKX15 hr
Apr 24, 3:36 AM EDTFreeze WatchOKX12 hr
Apr 24, 3:47 PM EDTFreeze WarningOKX17 hr
Apr 25, 3:43 PM EDTFrost AdvisoryOKX16 hr
May 8, 6:36 AM EDTDense Fog AdvisoryOKX3 hr
May 8, 3:20 PM EDTDense Fog AdvisoryOKX14 hr
May 9, 3:28 PM EDTDense Fog AdvisoryOKX18 hr
May 10, 3:32 PM EDTDense Fog AdvisoryOKX12 hr
May 11, 3:25 PM EDTDense Fog AdvisoryOKX18 hr
May 28, 6:49 AM EDTSpecial Weather StatementOKX41 min
May 28, 11:54 AM EDTSevere Thunderstorm WatchSPC7 hr
May 28, 4:26 PM EDTMesoscale DiscussionSPC64 min
May 29, 5:50 PM EDTRip Current StatementOKX27 hr
May 30, 12:44 AM EDTDense Fog AdvisoryOKX8 hr
May 31, 1:01 PM EDTFlash Flood WatchOKX43 hr
Jun 7, 4:52 PM EDTRip Current StatementOKX52 hr
Jun 19, 4:14 PM EDTFlood WatchOKX38 hr
Jun 20, 6:03 PM EDTRip Current StatementOKX25 hr
Jun 21, 4:52 AM EDTSpecial Weather StatementOKX23 min
Jun 23, 10:12 AM EDTSevere Thunderstorm WatchSPC6 hr
Jun 23, 2:46 PM EDTMesoscale DiscussionSPC89 min
Jun 23, 3:35 PM EDTSevere Thunderstorm WatchSPC6 hr
Jun 23, 5:58 PM EDTSevere Thunderstorm WarningOKX47 min
Jun 23, 6:43 PM EDTSevere Thunderstorm WarningOKX45 min
Jun 23, 7:46 PM EDTSevere Thunderstorm WarningOKX29 min
Jun 23, 8:14 PM EDTSevere Thunderstorm WarningOKX31 min
Jun 23, 8:34 PM EDTMesoscale DiscussionSPC56 min
Jun 27, 4:28 AM EDTRip Current StatementOKX64 hr
Jul 1, 3:17 AM EDTFlash Flood WatchOKX3 hr
Jul 1, 4:54 AM EDTMesoscale DiscussionSPC66 min
Jul 1, 5:34 AM EDTSevere Thunderstorm WarningOKX56 min
Jul 1, 5:40 AM EDTAreal Flood AdvisoryOKX3 hr
Jul 1, 6:20 AM EDTSevere Thunderstorm WarningOKX55 min
Jul 1, 7:59 AM EDTRip Current StatementOKX13 hr
Jul 14, 2:23 AM EDTAreal Flood AdvisoryOKX52 min
Jul 15, 1:03 PM EDTAreal Flood AdvisoryOKX117 min
Jul 20, 5:32 PM EDTSpecial Weather StatementOKX28 min
Jul 21, 7:00 PM EDTMesoscale DiscussionSPC90 min
Jul 25, 4:45 PM EDTRip Current StatementOKX28 hr
Jul 29, 4:39 PM EDTRip Current StatementOKX27 hr
Jul 30, 2:50 PM EDTSevere Thunderstorm WarningOKX40 min
Jul 30, 3:08 PM EDTAreal Flood AdvisoryOKX112 min
Jul 30, 4:40 PM EDTAreal Flood AdvisoryOKX2 hr
Jul 30, 5:58 PM EDTAreal Flood AdvisoryOKX62 min
Aug 1, 12:40 PM EDTRip Current StatementOKX8 hr
Aug 2, 4:06 PM EDTRip Current StatementOKX29 hr
Aug 3, 4:46 PM EDTRip Current StatementOKX28 hr
Aug 4, 4:40 AM EDTSevere Thunderstorm WarningOKX35 min
Aug 4, 4:56 AM EDTSevere Thunderstorm WarningOKX49 min
Aug 4, 5:02 AM EDTSevere Thunderstorm WarningOKX9 min
Aug 4, 5:28 AM EDTSevere Thunderstorm WarningOKX47 min
Aug 4, 5:49 AM EDTSevere Thunderstorm WarningOKX26 min
Aug 10, 4:35 PM EDTRip Current StatementOKX27 hr
Aug 11, 7:28 AM EDTSpecial Weather StatementOKX62 min
Aug 11, 8:20 AM EDTSpecial Weather StatementOKX55 min
Aug 11, 9:10 AM EDTAreal Flood AdvisoryOKX2 hr
Aug 11, 10:02 AM EDTSpecial Weather StatementOKX43 min
Aug 16, 3:09 PM EDTAreal Flood AdvisoryOKX66 min
Aug 19, 3:14 PM EDTRip Current StatementOKX30 hr
Aug 21, 4:58 AM EDTAreal Flood AdvisoryOKX3 hr
Aug 21, 5:16 AM EDTFlash Flood WarningOKX119 min
Sep 3, 8:21 AM EDTSpecial Weather StatementOKX54 min
Sep 3, 4:56 PM EDTRip Current StatementOKX28 hr
Sep 10, 1:55 AM EDTAreal Flood AdvisoryOKX2 hr
Sep 10, 5:00 AM EDTAreal Flood AdvisoryOKX2 hr
Sep 10, 8:53 AM EDTAreal Flood AdvisoryOKX112 min
Sep 10, 9:50 AM EDTAreal Flood AdvisoryOKX3 hr
Sep 10, 11:05 AM EDTFlash Flood WarningOKX3 hr
Sep 10, 12:58 PM EDTAreal Flood AdvisoryOKX107 min
Sep 10, 1:29 PM EDTAreal Flood AdvisoryOKX2 hr
Sep 10, 1:54 PM EDTFlash Flood WarningOKX111 min
Sep 10, 2:25 PM EDTFlash Flood WatchOKX11 hr
Sep 10, 4:06 PM EDTAreal Flood AdvisoryOKX114 min
Sep 10, 5:10 PM EDTFlash Flood WarningOKX3 hr
Sep 13, 6:59 PM EDTSpecial Weather StatementOKX16 min
Sep 20, 4:32 PM EDTRip Current StatementOKX58 hr
Sep 21, 3:26 PM EDTRip Current StatementOKX35 hr
Sep 23, 3:23 PM EDTRip Current StatementOKX13 hr
Sep 24, 3:24 PM EDTRip Current StatementOKX51 hr
Sep 27, 4:55 AM EDTRip Current StatementOKX15 hr
Sep 30, 3:44 AM EDTCoastal Flood StatementOKX11 hr
Sep 30, 4:09 PM EDTCoastal Flood WatchOKX37 hr
Sep 30, 4:09 PM EDTCoastal Flood AdvisoryOKX26 hr
Sep 30, 4:09 PM EDTHigh Surf AdvisoryOKX5 days
Oct 1, 5:57 PM EDTCoastal Flood WatchOKX11 hr
Oct 1, 5:57 PM EDTCoastal Flood AdvisoryOKX24 hr
Oct 2, 4:34 PM EDTCoastal Flood AdvisoryOKX11 hr
Oct 2, 4:34 PM EDTCoastal Flood AdvisoryOKX24 hr
Oct 3, 3:58 PM EDTCoastal Flood AdvisoryOKX26 hr
Oct 3, 3:58 PM EDTCoastal Flood AdvisoryOKX14 hr
Oct 9, 5:34 PM EDTSpecial Weather StatementOKX56 min
Oct 9, 6:04 PM EDTAreal Flood AdvisoryOKX56 min
Oct 16, 8:20 AM EDTSpecial Weather StatementOKX25 min
Oct 16, 11:50 AM EDTFreeze WatchOKX16 hr
Oct 16, 3:05 PM EDTFreeze WatchOKX37 hr
Oct 18, 3:41 AM EDTFreeze WarningOKX30 hr
Oct 23, 3:32 AM EDTFrost AdvisoryOKX24 hr
Oct 27, 3:54 PM EDTCoastal Flood AdvisoryOKX22 hr
Oct 28, 7:28 AM EDTCoastal Flood StatementOKX19 hr
Oct 29, 3:57 AM EDTSpecial Weather StatementOKX33 min
Oct 30, 3:34 PM EDTFrost AdvisoryOKX12 hr
Nov 5, 3:13 AM ESTDense Fog AdvisoryOKX6 hr
Nov 6, 2:06 PM ESTSpecial Weather StatementOKX24 min
Nov 6, 2:51 PM ESTSpecial Weather StatementOKX3 hr
Nov 7, 2:46 PM ESTFreeze WatchOKX21 hr
Nov 8, 11:47 AM ESTFreeze WarningOKX20 hr
Nov 11, 4:22 PM ESTCoastal Flood AdvisoryOKX17 hr
Nov 12, 9:51 AM ESTCoastal Flood StatementOKX69 min
Nov 27, 12:53 AM ESTDense Fog AdvisoryOKX8 hr
Dec 2, 3:46 PM ESTDense Fog AdvisoryOKX4 hr
Dec 11, 2:14 AM ESTDense Fog AdvisoryOKX8 hr
Dec 14, 8:45 AM ESTDense Fog AdvisoryOKX3 hr
Dec 14, 2:35 PM ESTDense Fog AdvisoryOKX10 hr
Dec 23, 1:09 AM ESTDense Fog AdvisoryOKX8 hr
Dec 24, 6:44 PM ESTDense Fog AdvisoryOKX11 hr
Dec 27, 3:47 AM ESTDense Fog AdvisoryOKX6 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 archive20142016

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.