Alert archive / New Jersey / Union County

Weather alerts in Union County, New Jersey, 2010

121 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Union County and its neighbors

Each county as a circle sized by its count in 2010. Tap one for its archive.

Alerts
121
Warnings
18
Watches
14
Advisories
26
Busiest month
July23 alerts
Busiest day
September 13, 20106 alerts

Over time

By month

Warning verification

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

Union County, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings8450%250%45 min
Flash flood warnings110%367%34 min

Each office's whole area, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS New York, NY: tornado warnings11373%475%9 min
NWS New York, NY: severe thunderstorm warnings1016635%24464%22 min
NWS New York, NY: flash flood warnings131023%5151%65 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 25, 9:12 AM ESTAreal Flood AdvisoryOKX48 min
Jan 25, 12:29 PM ESTAreal Flood AdvisoryOKX6 hr
Feb 10, 7:27 AM ESTMesoscale DiscussionSPC5 hr
Feb 10, 12:20 PM ESTMesoscale DiscussionSPC4 hr
Feb 23, 6:45 PM ESTAreal Flood AdvisoryOKX105 min
Feb 26, 12:44 AM ESTMesoscale DiscussionSPC4 hr
Mar 13, 2:23 PM ESTAreal Flood AdvisoryOKX11 hr
Mar 13, 6:47 PM ESTAreal Flood WarningOKX7 hr
Mar 14, 1:42 AM ESTAreal Flood WarningOKX9 hr
Mar 22, 11:57 PM EDTAreal Flood AdvisoryOKX3 hr
Mar 23, 2:17 AM EDTAreal Flood WarningOKX105 min
Mar 29, 2:27 AM EDTAreal Flood AdvisoryOKX108 min
Mar 29, 4:18 AM EDTAreal Flood WarningOKX117 min
Mar 29, 5:59 AM EDTAreal Flood WarningOKX2 hr
Mar 29, 8:14 AM EDTAreal Flood AdvisoryOKX106 min
Mar 30, 6:34 AM EDTAreal Flood AdvisoryOKX6 hr
Mar 30, 11:50 AM EDTAreal Flood WarningOKX6 hr
Mar 30, 5:45 PM EDTAreal Flood WarningOKX4 hr
May 3, 6:58 AM EDTAreal Flood AdvisoryOKX3 hr
May 14, 3:43 PM EDTSevere Thunderstorm WatchSPC6 hr
May 31, 5:22 PM EDTSpecial Weather StatementOKX53 min
Jun 1, 3:39 PM EDTSpecial Weather StatementOKX36 min
Jun 3, 1:03 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 6, 10:25 AM EDTMesoscale DiscussionSPC65 min
Jun 6, 11:08 AM EDTTornado WatchSPC8 hr
Jun 6, 2:38 PM EDTMesoscale DiscussionSPC67 min
Jun 6, 4:02 PM EDTSpecial Weather StatementOKX28 min
Jun 10, 2:59 PM EDTMesoscale DiscussionSPC91 min
Jun 10, 3:03 PM EDTSpecial Weather StatementOKX42 min
Jun 24, 12:16 PM EDTMesoscale DiscussionSPC89 min
Jun 24, 12:28 PM EDTSevere Thunderstorm WatchSPC8 hr
Jun 24, 2:12 PM EDTSevere Thunderstorm WarningOKX33 min
Jun 24, 3:07 PM EDTMesoscale DiscussionSPC53 min
Jun 28, 12:49 PM EDTMesoscale DiscussionSPC56 min
Jun 28, 1:45 PM EDTSevere Thunderstorm WatchSPC6 hr
Jun 28, 3:53 PM EDTMesoscale DiscussionSPC2 hr
Jul 10, 10:08 AM EDTAreal Flood AdvisoryOKX98 min
Jul 13, 10:39 AM EDTMesoscale DiscussionSPC66 min
Jul 13, 11:28 AM EDTAreal Flood AdvisoryOKX3 hr
Jul 14, 10:17 AM EDTAreal Flood AdvisoryOKX118 min
Jul 14, 3:01 PM EDTAreal Flood AdvisoryOKX100 min
Jul 19, 7:43 AM EDTSpecial Weather StatementOKX47 min
Jul 19, 1:17 PM EDTMesoscale DiscussionSPC58 min
Jul 19, 7:39 PM EDTMesoscale DiscussionSPC96 min
Jul 19, 8:57 PM EDTSpecial Weather StatementOKX63 min
Jul 21, 12:38 PM EDTMesoscale DiscussionSPC67 min
Jul 21, 1:32 PM EDTSevere Thunderstorm WatchSPC9 hr
Jul 21, 3:41 PM EDTMesoscale DiscussionSPC64 min
Jul 21, 7:00 PM EDTMesoscale DiscussionSPC90 min
Jul 23, 5:36 PM EDTMesoscale DiscussionSPC54 min
Jul 23, 5:55 PM EDTTornado WatchSPC4 hr
Jul 23, 8:05 PM EDTAreal Flood AdvisoryOKX55 min
Jul 24, 8:23 PM EDTMesoscale DiscussionSPC67 min
Jul 25, 11:29 AM EDTSevere Thunderstorm WatchSPC8 hr
Jul 25, 12:50 PM EDTMesoscale DiscussionSPC55 min
Jul 25, 2:20 PM EDTSpecial Weather StatementOKX55 min
Jul 25, 3:25 PM EDTMesoscale DiscussionSPC65 min
Jul 29, 7:02 AM EDTSpecial Weather StatementOKX58 min
Jul 29, 1:47 PM EDTSpecial Weather StatementOKX58 min
Aug 1, 9:11 AM EDTSpecial Weather StatementOKX64 min
Aug 1, 9:17 AM EDTAreal Flood AdvisoryOKX88 min
Aug 1, 9:24 AM EDTFlash Flood WarningOKX111 min
Aug 1, 9:53 AM EDTSpecial Weather StatementOKX67 min
Aug 5, 4:44 AM EDTSpecial Weather StatementOKX31 min
Aug 16, 2:17 PM EDTMesoscale DiscussionSPC88 min
Aug 16, 5:38 PM EDTSpecial Weather StatementOKX37 min
Aug 16, 5:57 PM EDTSevere Thunderstorm WarningOKX38 min
Aug 16, 7:16 PM EDTMesoscale DiscussionSPC59 min
Aug 22, 3:19 PM EDTMesoscale DiscussionSPC56 min
Aug 22, 4:26 PM EDTAreal Flood AdvisoryOKX109 min
Aug 22, 6:42 PM EDTAreal Flood AdvisoryOKX108 min
Aug 22, 8:22 PM EDTAreal Flood AdvisoryOKX83 min
Sep 13, 12:51 PM EDTMesoscale DiscussionSPC84 min
Sep 13, 1:39 PM EDTSevere Thunderstorm WatchSPC6 hr
Sep 13, 4:03 PM EDTMesoscale DiscussionSPC87 min
Sep 13, 4:59 PM EDTSevere Thunderstorm WarningOKX46 min
Sep 13, 5:58 PM EDTSpecial Weather StatementOKX62 min
Sep 13, 6:06 PM EDTMesoscale DiscussionSPC54 min
Sep 16, 4:37 PM EDTMesoscale DiscussionSPC53 min
Sep 16, 5:09 PM EDTAreal Flood AdvisoryOKX51 min
Sep 22, 3:10 PM EDTMesoscale DiscussionSPC65 min
Sep 22, 3:43 PM EDTSevere Thunderstorm WatchSPC7 hr
Sep 22, 6:43 PM EDTSpecial Weather StatementOKX62 min
Sep 22, 7:14 PM EDTMesoscale DiscussionSPC61 min
Sep 22, 7:58 PM EDTSevere Thunderstorm WarningOKX47 min
Sep 28, 8:00 AM EDTMesoscale DiscussionSPC2 hr
Sep 28, 10:58 AM EDTTornado WatchSPC7 hr
Sep 28, 1:50 PM EDTMesoscale DiscussionSPC55 min
Sep 28, 4:57 PM EDTSpecial Weather StatementOKX63 min
Sep 30, 5:50 AM EDTAreal Flood AdvisoryOKX2 hr
Sep 30, 10:49 AM EDTMesoscale DiscussionSPC116 min
Sep 30, 8:29 PM EDTMesoscale DiscussionSPC91 min
Oct 1, 12:01 AM EDTMesoscale DiscussionSPC89 min
Oct 1, 2:04 AM EDTMesoscale DiscussionSPC26 min
Oct 1, 3:37 AM EDTAreal Flood AdvisoryOKX4 hr
Oct 1, 5:25 AM EDTAreal Flood WarningOKX5 hr
Oct 11, 3:19 PM EDTMesoscale DiscussionSPC56 min
Oct 11, 3:38 PM EDTSevere Thunderstorm WatchSPC6 hr
Oct 11, 6:07 PM EDTMesoscale DiscussionSPC83 min
Oct 11, 7:18 PM EDTSpecial Weather StatementOKX42 min
Oct 11, 8:09 PM EDTSevere Thunderstorm WarningOKX51 min
Oct 11, 8:15 PM EDTMesoscale DiscussionSPC60 min
Oct 11, 8:23 PM EDTSpecial Weather StatementPHI67 min
Oct 14, 5:46 PM EDTAreal Flood AdvisoryOKX119 min
Nov 17, 3:38 AM ESTSevere Thunderstorm WatchSPC2 hr
Nov 17, 3:44 AM ESTSevere Thunderstorm WarningOKX61 min
Dec 1, 9:04 AM ESTSpecial Weather StatementOKX56 min
Dec 1, 9:31 AM ESTSpecial Weather StatementPHI59 min
Dec 1, 10:17 AM ESTAreal Flood AdvisoryOKX3 hr
Dec 1, 12:47 PM ESTSevere Thunderstorm WarningOKX58 min
Dec 1, 1:03 PM ESTAreal Flood AdvisoryOKX3 hr
Dec 1, 1:45 PM ESTSevere Thunderstorm WarningOKX45 min
Dec 25, 3:58 AM ESTWinter Storm WatchOKX12 hr
Dec 25, 3:55 PM ESTBlizzard WarningOKX43 hr
Dec 26, 6:56 AM ESTMesoscale DiscussionSPC6 hr
Dec 26, 12:31 PM ESTMesoscale DiscussionSPC6 hr
Dec 26, 2:01 PM ESTCoastal Flood AdvisoryOKX15 hr
Dec 26, 6:26 PM ESTMesoscale DiscussionSPC6 hr
Dec 27, 12:24 AM ESTMesoscale DiscussionSPC6 hr
Dec 27, 2:49 AM ESTMesoscale DiscussionSPC4 hr
Dec 27, 10:39 AM ESTWinter Weather AdvisoryOKX22 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 archive20092011

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.