Alert archive / West Virginia

Weather alerts in Lewis County, West Virginia

2,550 weather alerts since 1986, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Lewis County and its neighbors

Each county as a circle sized by its count since 1986. Tap one for its archive.

Alerts
2,550
Warnings
720
Watches
553
Advisories
368
Busiest year
2026216 alerts
Average year
64over 40 years on file

Over time

By year

Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.

By month of the year

Warning verification

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

From 2008 to 2025, 0% of tornado reports in Lewis County fell inside a tornado warning, and 100% of the tornado warnings had no report inside them.

Tornado warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
2010010%
201410100%0
201620100%0
202510100%0

Severe thunderstorm warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
20089544%3100%15 min
200911645%683%21 min
20106433%3100%19 min
2011211529%1486%25 min
201214843%771%25 min
20138713%4100%12 min
20148625%367%2 min
201511110%5100%46 min
2016990%683%19 min
201713838%683%15 min
20185340%2100%10 min
2019181328%4100%13 min
20209633%683%36 min
202113838%967%22 min
20229722%580%23 min
20237614%1100%29 min
2024181233%2374%26 min
2025231917%1292%23 min

Flash flood warnings by year

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
2009110%0
20115340%1100%22 min
201220100%0
20133233%0
20147357%250%3 min
20153233%2100%63 min
20166517%2100%88 min
20176267%10%
201811645%560%35 min
20194175%0
20203233%1100%30 min
20219633%4100%198 min
20227357%1100%231 min
20233167%10%
2024220%0
20258625%10100%83 min

Years from 2008, the first full year of storm-based warnings. The year still running is on its own page.

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.

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

The latest warnings

The most recent on file, newest first.

IssuedProductOfficeLasted
Sep 22, 8:02 PM EDTAreal Flood WarningRLX3 hr
Sep 22, 5:30 PM EDTFlash Flood WarningRLX3 hr
Sep 22, 12:56 AM EDTAreal Flood WarningRLX3 hr
Sep 21, 10:28 PM EDTFlash Flood WarningRLX2 hr
Sep 21, 2:38 AM EDTFlash Flood WarningRLX111 min
Sep 20, 9:19 AM EDTAreal Flood WarningRLX5 hr
Sep 20, 4:40 AM EDTFlash Flood WarningRLX5 hr
Sep 13, 1:18 AM EDTAreal Flood WarningRLX7 hr
Sep 12, 10:13 PM EDTFlash Flood WarningRLX3 hr
Sep 12, 9:13 PM EDTAreal Flood WarningRLX11 hr
Sep 12, 7:03 PM EDTAreal Flood WarningRLX13 hr
Sep 12, 5:04 PM EDTFlash Flood WarningRLX119 min

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive

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.