Alert archive / New York / Washington County

Weather alerts in Washington County, New York, 2020

143 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Washington County and its neighbors

Each county as a circle sized by its count in 2020. Tap one for its archive.

Alerts
143
Warnings
35
Watches
13
Advisories
35
Busiest month
August48 alerts
Busiest day
August 29, 20209 alerts

Over time

By month

Warning verification

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

2 of 3 tornado warnings covering Washington County in 2020 had a tornado report inside them; 0 of 1 tornado reports fell inside a warning.

Washington County, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings3233%10%
Severe thunderstorm warnings231917%7794%32 min
Flash flood warnings110%5100%8 min

Each office's whole area, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Albany, NY: tornado warnings20670%1765%21 min
NWS Albany, NY: severe thunderstorm warnings1378637%51488%24 min
NWS Albany, NY: flash flood warnings7357%2295%43 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 8, 6:37 AM ESTMesoscale DiscussionSPC6 hr
Jan 10, 3:25 AM ESTWinter Weather AdvisoryALY12 hr
Jan 11, 1:24 PM ESTWind AdvisoryALY26 hr
Jan 17, 3:46 AM ESTWinter Storm WatchALY11 hr
Jan 17, 3:13 PM ESTWinter Storm WarningALY46 hr
Jan 24, 4:20 PM ESTWinter Weather AdvisoryALY32 hr
Feb 5, 3:24 AM ESTWinter Weather AdvisoryALY66 hr
Feb 5, 4:18 PM ESTWinter Storm WatchALY23 hr
Feb 7, 9:58 AM ESTMesoscale DiscussionSPC4 hr
Feb 12, 4:40 AM ESTWinter Weather AdvisoryALY32 hr
Mar 13, 1:08 PM EDTSpecial Weather StatementALY67 min
Mar 20, 2:47 PM EDTMesoscale DiscussionSPC88 min
Mar 22, 2:14 PM EDTWinter Weather AdvisoryALY35 hr
Mar 23, 3:26 PM EDTMesoscale DiscussionSPC6 hr
Mar 29, 7:11 PM EDTSpecial Weather StatementALY34 min
Mar 29, 7:46 PM EDTSpecial Weather StatementALY29 min
Apr 9, 3:44 AM EDTWind AdvisoryALY36 hr
Apr 12, 3:32 PM EDTWind AdvisoryALY31 hr
Apr 13, 2:42 PM EDTMesoscale DiscussionSPC93 min
Apr 21, 12:59 PM EDTSpecial Weather StatementALY61 min
May 5, 3:47 AM EDTFrost AdvisoryALY28 hr
May 7, 8:51 PM EDTSpecial Weather StatementALY39 min
May 9, 3:48 AM EDTFreeze WarningALY27 hr
May 10, 2:59 PM EDTFreeze WatchALY24 hr
May 12, 10:20 AM EDTFreeze WarningALY22 hr
May 13, 12:53 PM EDTFreeze WarningALY19 hr
May 15, 2:59 PM EDTMesoscale DiscussionSPC91 min
May 15, 3:32 PM EDTTornado WatchSPC6 hr
May 15, 4:58 PM EDTMesoscale DiscussionSPC92 min
May 15, 5:42 PM EDTSevere Thunderstorm WarningALY48 min
May 15, 6:16 PM EDTTornado WarningALY29 min
May 15, 6:26 PM EDTSevere Thunderstorm WarningALY49 min
May 15, 6:59 PM EDTMesoscale DiscussionSPC2 hr
May 29, 2:24 PM EDTSevere Thunderstorm WarningALY66 min
May 29, 2:25 PM EDTSevere Thunderstorm WatchSPC7 hr
May 29, 3:29 PM EDTSevere Thunderstorm WarningALY10 min
May 29, 5:22 PM EDTSevere Thunderstorm WarningALY68 min
May 29, 5:57 PM EDTSevere Thunderstorm WarningALY63 min
May 29, 6:26 PM EDTSevere Thunderstorm WarningALY27 min
May 29, 6:52 PM EDTSevere Thunderstorm WarningALY53 min
May 29, 8:01 PM EDTMesoscale DiscussionSPC119 min
May 29, 8:18 PM EDTSevere Thunderstorm WarningALY57 min
Jun 11, 6:48 AM EDTSpecial Weather StatementALY57 min
Jun 24, 5:25 AM EDTSpecial Weather StatementALY65 min
Jun 24, 6:18 AM EDTSpecial Weather StatementALY57 min
Jun 28, 12:37 PM EDTMesoscale DiscussionSPC113 min
Jun 28, 3:21 PM EDTSpecial Weather StatementALY39 min
Jul 2, 2:41 PM EDTMesoscale DiscussionSPC109 min
Jul 2, 3:40 PM EDTSpecial Weather StatementALY35 min
Jul 2, 3:46 PM EDTSpecial Weather StatementALY29 min
Jul 2, 4:01 PM EDTSpecial Weather StatementALY29 min
Jul 2, 4:16 PM EDTSpecial Weather StatementALY14 min
Jul 3, 6:01 PM EDTAreal Flood AdvisoryALY98 min
Jul 8, 4:07 AM EDTHeat AdvisoryALY40 hr
Jul 8, 1:01 PM EDTMesoscale DiscussionSPC119 min
Jul 8, 2:37 PM EDTSevere Thunderstorm WarningALY53 min
Jul 8, 3:39 PM EDTAreal Flood AdvisoryALY2 hr
Jul 8, 3:42 PM EDTSevere Thunderstorm WarningALY41 min
Jul 8, 6:09 PM EDTSpecial Weather StatementALY36 min
Jul 11, 3:54 AM EDTHeat AdvisoryALY15 hr
Jul 11, 2:44 PM EDTSpecial Weather StatementALY31 min
Jul 11, 9:16 PM EDTSpecial Weather StatementALY29 min
Jul 14, 12:59 PM EDTAreal Flood AdvisoryALY3 hr
Jul 14, 2:00 PM EDTSevere Thunderstorm WarningALY44 min
Jul 18, 3:51 AM EDTHeat AdvisoryALY63 hr
Jul 22, 2:57 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 23, 2:35 PM EDTSpecial Weather StatementALY25 min
Jul 23, 3:11 PM EDTSpecial Weather StatementALY34 min
Jul 23, 7:48 PM EDTSpecial Weather StatementALY57 min
Jul 26, 2:59 PM EDTHeat AdvisoryALY29 hr
Jul 30, 1:20 PM EDTMesoscale DiscussionSPC115 min
Aug 2, 2:00 PM EDTMesoscale DiscussionSPC2 hr
Aug 2, 3:10 PM EDTTornado WatchSPC7 hr
Aug 2, 6:45 PM EDTMesoscale DiscussionSPC2 hr
Aug 3, 3:26 AM EDTFlash Flood WatchALY42 hr
Aug 3, 3:15 PM EDTWind AdvisoryALY30 hr
Aug 4, 10:04 AM EDTAreal Flood AdvisoryALY88 min
Aug 4, 11:41 AM EDTSpecial Weather StatementALY49 min
Aug 4, 12:43 PM EDTTornado WatchSPC6 hr
Aug 4, 3:34 PM EDTAreal Flood AdvisoryALY4 hr
Aug 4, 4:18 PM EDTAreal Flood AdvisoryALY3 hr
Aug 9, 3:17 PM EDTHeat AdvisoryALY53 hr
Aug 10, 2:29 PM EDTSpecial Weather StatementALY46 min
Aug 10, 3:24 PM EDTSevere Thunderstorm WarningALY66 min
Aug 10, 4:31 PM EDTSpecial Weather StatementALY44 min
Aug 10, 4:49 PM EDTSpecial Weather StatementALY41 min
Aug 10, 5:11 PM EDTSevere Thunderstorm WarningALY64 min
Aug 10, 5:31 PM EDTSpecial Weather StatementALY29 min
Aug 10, 5:58 PM EDTAreal Flood AdvisoryALY117 min
Aug 11, 3:02 AM EDTHeat AdvisoryALY17 hr
Aug 11, 8:29 PM EDTSpecial Weather StatementALY46 min
Aug 11, 9:22 PM EDTSpecial Weather StatementALY53 min
Aug 21, 2:26 PM EDTMesoscale DiscussionSPC2 hr
Aug 22, 7:05 AM EDTSpecial Weather StatementALY40 min
Aug 22, 7:44 AM EDTSpecial Weather StatementALY46 min
Aug 23, 2:08 PM EDTMesoscale DiscussionSPC2 hr
Aug 23, 4:31 PM EDTSevere Thunderstorm WarningALY29 min
Aug 23, 6:39 PM EDTSpecial Weather StatementALY36 min
Aug 23, 6:58 PM EDTSpecial Weather StatementALY32 min
Aug 24, 2:00 PM EDTMesoscale DiscussionSPC2 hr
Aug 24, 4:00 PM EDTSevere Thunderstorm WarningALY45 min
Aug 24, 4:43 PM EDTSevere Thunderstorm WarningALY62 min
Aug 24, 5:12 PM EDTAreal Flood AdvisoryALY111 min
Aug 24, 6:06 PM EDTFlash Flood WarningALY3 hr
Aug 24, 6:27 PM EDTAreal Flood AdvisoryALY109 min
Aug 24, 6:45 PM EDTSevere Thunderstorm WarningALY60 min
Aug 24, 9:16 PM EDTAreal Flood WarningALY11 hr
Aug 25, 2:09 PM EDTMesoscale DiscussionSPC96 min
Aug 25, 2:36 PM EDTSpecial Weather StatementALY24 min
Aug 25, 2:59 PM EDTSpecial Weather StatementALY61 min
Aug 29, 1:36 PM EDTMesoscale DiscussionSPC114 min
Aug 29, 2:59 PM EDTSevere Thunderstorm WatchSPC6 hr
Aug 29, 4:52 PM EDTMesoscale DiscussionSPC53 min
Aug 29, 4:54 PM EDTSevere Thunderstorm WarningALY45 min
Aug 29, 5:11 PM EDTTornado WarningALY34 min
Aug 29, 5:31 PM EDTTornado Warning Tornado observedALY29 min
Aug 29, 6:34 PM EDTSevere Thunderstorm WarningALY31 min
Aug 29, 6:45 PM EDTMesoscale DiscussionSPC2 hr
Aug 29, 7:40 PM EDTSevere Thunderstorm WarningALY65 min
Sep 14, 2:58 AM EDTFrost AdvisoryALY30 hr
Sep 18, 3:34 AM EDTFrost AdvisoryALY28 hr
Sep 30, 1:23 AM EDTAreal Flood AdvisoryALY112 min
Sep 30, 4:55 AM EDTAreal Flood AdvisoryALY3 hr
Oct 6, 3:18 PM EDTWind AdvisoryALY31 hr
Oct 7, 3:08 PM EDTSpecial Weather StatementALY37 min
Oct 7, 3:21 PM EDTSevere Thunderstorm WarningALY39 min
Oct 7, 3:56 PM EDTSevere Thunderstorm WarningALY34 min
Oct 10, 2:13 PM EDTSevere Thunderstorm WatchSPC7 hr
Oct 10, 6:44 PM EDTMesoscale DiscussionSPC2 hr
Oct 29, 1:43 AM EDTDense Fog AdvisoryALY6 hr
Dec 15, 3:54 PM ESTWinter Storm WatchALY11 hr
Dec 15, 3:54 PM ESTWinter Storm WarningALY45 hr
Dec 16, 10:12 PM ESTMesoscale DiscussionSPC6 hr
Dec 17, 9:59 AM ESTSpecial Weather StatementALY31 min
Dec 17, 10:05 AM ESTMesoscale DiscussionSPC4 hr
Dec 17, 10:34 AM ESTSpecial Weather StatementALY26 min
Dec 22, 3:06 PM ESTFlood WatchALY3 days
Dec 24, 3:44 AM ESTWind AdvisoryALY30 hr
Dec 24, 1:03 PM ESTRiver Flood WarningALY34 hr
Dec 24, 1:08 PM ESTRiver Flood WarningALY36 hr
Dec 25, 5:51 AM ESTAreal Flood AdvisoryALY4 hr
Dec 30, 3:24 AM ESTWinter Weather AdvisoryALY24 hr
Dec 30, 1:20 PM ESTWinter Weather AdvisoryALY15 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 archive20192021

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.