Alert archive / New York / Herkimer County

Weather alerts in Herkimer County, New York, 2015

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

Herkimer County and its neighbors

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

Alerts
106
Warnings
22
Watches
16
Advisories
39
Busiest month
January19 alerts
Busiest day
June 12, 20155 alerts

Over time

By month

Warning verification

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

0 of 1 tornado warnings covering Herkimer County in 2015 had a tornado report inside them.

Herkimer County, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings10100%0
Severe thunderstorm warnings3167%2100%33 min
Flash flood warnings10100%0

Each office's whole area, 2015

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Albany, NY: tornado warnings60100%20%
NWS Albany, NY: severe thunderstorm warnings805828%19879%23 min
NWS Albany, NY: flash flood warnings7357%1060%78 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 1, 3:15 AM ESTLake Effect Snow WarningALY30 hr
Jan 1, 3:58 PM ESTLake Effect Snow AdvisoryALY24 hr
Jan 2, 4:02 PM ESTWinter Weather AdvisoryALY41 hr
Jan 4, 4:33 AM ESTLake Effect Snow AdvisoryALY44 hr
Jan 6, 4:37 AM ESTLake Effect Snow AdvisoryALY29 hr
Jan 6, 4:37 AM ESTWind Chill WatchALY12 hr
Jan 6, 4:32 PM ESTWind Chill WarningALY41 hr
Jan 6, 4:32 PM ESTWind Chill AdvisoryALY41 hr
Jan 8, 3:32 PM ESTLake Effect Snow WarningALY44 hr
Jan 12, 3:33 PM ESTWind Chill AdvisoryALY18 hr
Jan 16, 2:51 AM ESTWind Chill AdvisoryALY26 hr
Jan 18, 7:55 AM ESTFreezing Rain AdvisoryALY16 hr
Jan 24, 8:37 PM ESTWinter Weather AdvisoryALY3 hr
Jan 29, 3:51 AM ESTWinter Weather AdvisoryALY33 hr
Jan 30, 4:41 AM ESTWind Chill WarningALY30 hr
Jan 30, 4:41 AM ESTWind Chill AdvisoryALY30 hr
Jan 31, 2:44 AM ESTWinter Storm WatchALY13 hr
Jan 31, 3:58 PM ESTWinter Storm WatchALY10 hr
Jan 31, 3:58 PM ESTWinter Storm WarningALY50 hr
Feb 2, 4:00 AM ESTMesoscale DiscussionSPC6 hr
Feb 2, 4:19 PM ESTWind Chill WarningALY17 hr
Feb 2, 4:19 PM ESTWind Chill AdvisoryALY17 hr
Feb 5, 4:09 AM ESTWind Chill AdvisoryALY29 hr
Feb 6, 3:38 PM ESTWinter Storm WatchALY24 hr
Feb 7, 3:36 PM ESTWinter Storm WarningALY57 hr
Feb 11, 4:42 PM ESTWind Chill WatchALY11 hr
Feb 12, 3:33 AM ESTWind Chill WarningALY32 hr
Feb 13, 3:47 PM ESTWind Chill WatchALY13 hr
Feb 14, 4:17 AM ESTWind Chill WarningALY56 hr
Feb 14, 4:17 AM ESTWinter Weather AdvisoryALY30 hr
Feb 19, 3:57 AM ESTWind Chill WarningALY30 hr
Feb 20, 4:04 PM ESTWinter Weather AdvisoryALY40 hr
Feb 22, 2:08 PM ESTWind Chill AdvisoryALY40 hr
Feb 23, 3:46 PM ESTWind Chill WarningALY14 hr
Feb 28, 2:30 PM ESTWinter Weather AdvisoryALY38 hr
Mar 2, 2:31 PM ESTWinter Weather AdvisoryALY39 hr
Mar 13, 3:29 PM EDTFreezing Rain AdvisoryALY19 hr
Apr 3, 3:40 AM EDTWinter Weather AdvisoryALY30 hr
Apr 3, 3:45 AM EDTWind AdvisoryALY36 hr
Apr 3, 3:48 AM EDTFlood WatchALY32 hr
Apr 3, 4:01 PM EDTRiver Flood WarningALY7 days
Apr 8, 3:39 PM EDTWinter Weather AdvisoryALY12 hr
Apr 21, 10:35 AM EDTRiver Flood WarningALY7 days
May 11, 1:32 PM EDTMesoscale DiscussionSPC2 hr
May 12, 2:00 AM EDTSpecial Weather StatementALY45 min
May 13, 3:40 AM EDTFrost AdvisoryALY28 hr
May 20, 4:19 AM EDTFrost AdvisoryALY26 hr
May 21, 3:57 PM EDTFreeze WatchALY12 hr
May 22, 3:34 AM EDTFreeze WarningALY28 hr
May 27, 12:42 PM EDTSpecial Weather StatementALY63 min
May 27, 12:54 PM EDTSevere Thunderstorm WatchSPC6 hr
May 30, 5:01 PM EDTSpecial Weather StatementALY44 min
May 30, 5:18 PM EDTSpecial Weather StatementALY42 min
May 30, 6:48 PM EDTMesoscale DiscussionSPC87 min
May 30, 8:55 PM EDTSpecial Weather StatementALY50 min
Jun 6, 4:52 AM EDTFrost AdvisoryALY26 hr
Jun 8, 1:39 PM EDTTornado WatchSPC6 hr
Jun 10, 9:02 PM EDTSevere Thunderstorm WatchSPC4 hr
Jun 10, 10:53 PM EDTMesoscale DiscussionSPC67 min
Jun 10, 11:07 PM EDTSpecial Weather StatementALY23 min
Jun 12, 3:07 PM EDTTornado WatchSPC8 hr
Jun 12, 5:46 PM EDTSevere Thunderstorm WarningALY59 min
Jun 12, 6:22 PM EDTMesoscale DiscussionSPC83 min
Jun 12, 6:49 PM EDTSevere Thunderstorm WarningALY41 min
Jun 12, 7:03 PM EDTTornado WarningALY8 min
Jun 23, 4:24 AM EDTMesoscale DiscussionSPC66 min
Jun 23, 5:45 AM EDTSpecial Weather StatementALY45 min
Jun 23, 2:46 PM EDTMesoscale DiscussionSPC89 min
Jun 27, 4:14 AM EDTFlood WatchALY30 hr
Jul 1, 12:18 AM EDTAreal Flood AdvisoryALY3 hr
Jul 4, 6:39 PM EDTSpecial Weather StatementALY51 min
Jul 4, 7:35 PM EDTAreal Flood AdvisoryALY115 min
Jul 4, 8:28 PM EDTFlash Flood WarningALY3 hr
Jul 4, 8:39 PM EDTSpecial Weather StatementALY51 min
Jul 7, 4:41 PM EDTSpecial Weather StatementALY34 min
Jul 13, 5:45 PM EDTSpecial Weather StatementALY45 min
Jul 19, 1:36 PM EDTMesoscale DiscussionSPC2 hr
Jul 19, 2:49 PM EDTSevere Thunderstorm WatchSPC8 hr
Jul 19, 7:29 PM EDTMesoscale DiscussionSPC91 min
Jul 20, 12:23 AM EDTSpecial Weather StatementALY22 min
Aug 3, 12:45 PM EDTMesoscale DiscussionSPC2 hr
Aug 14, 5:12 PM EDTSevere Thunderstorm WarningALY48 min
Aug 18, 2:55 PM EDTSpecial Weather StatementALY65 min
Aug 18, 6:52 PM EDTSpecial Weather StatementALY38 min
Aug 18, 7:33 PM EDTAreal Flood AdvisoryALY3 hr
Sep 9, 11:07 AM EDTMesoscale DiscussionSPC83 min
Sep 9, 2:03 PM EDTSpecial Weather StatementALY42 min
Sep 20, 3:06 AM EDTFrost AdvisoryALY25 hr
Sep 29, 3:37 AM EDTFlood WatchALY33 hr
Sep 30, 8:00 AM EDTAreal Flood AdvisoryALY4 hr
Oct 1, 3:26 AM EDTFreeze WarningALY28 hr
Oct 3, 3:53 PM EDTFrost AdvisoryALY11 hr
Oct 4, 4:01 AM EDTFrost AdvisoryALY29 hr
Oct 4, 4:01 AM EDTFreeze WarningALY29 hr
Oct 10, 3:02 AM EDTFrost AdvisoryALY30 hr
Oct 27, 3:41 PM EDTWind AdvisoryALY32 hr
Nov 6, 1:58 PM ESTSpecial Weather StatementALY62 min
Nov 12, 5:26 PM ESTSpecial Weather StatementALY64 min
Nov 30, 10:50 PM ESTFreezing Rain AdvisoryALY13 hr
Dec 14, 3:23 PM ESTWind AdvisoryALY26 hr
Dec 17, 3:14 PM ESTLake Effect Snow WatchALY12 hr
Dec 18, 3:21 AM ESTLake Effect Snow WarningALY49 hr
Dec 18, 3:21 AM ESTLake Effect Snow AdvisoryALY49 hr
Dec 22, 9:30 PM ESTDense Fog AdvisoryALY12 hr
Dec 27, 3:43 PM ESTWinter Weather AdvisoryALY51 hr
Dec 28, 10:25 PM ESTMesoscale DiscussionSPC6 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.