Tornado Warnings in Virginia, 2016

By month

7 of 61 tornado warnings covering Virginia in 2016 had a tornado report inside them; 18 of 24 tornado reports fell inside a warning, on average 15 minutes after it went out.

Virginia, 2016

Each office's whole area, 2016

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.

• Hanover County9
• Richmond County9
• Essex County8
• Charles City County7
• King and Queen County7
• New Kent County7
• Goochland County7
• Prince George County6
• King William County6
• Northumberland County6
• Westmoreland County6
• Lancaster County6
• Middlesex County6
• Sussex County5
• Caroline County5
• City of Suffolk5
• Brunswick County5
• Dinwiddie County5
• Henrico County5
• Halifax County4
• Louisa County4
• Powhatan County4
• Appomattox County4
• Amelia County4
• Nottoway County4
• Fauquier County4
• Spotsylvania County4
• Stafford County4
• City of Fredericksburg4
• James City County3
• Pittsylvania County3
• Campbell County3
• Charlotte County3
• City of Chesapeake3
• City of Portsmouth3
• Prince Edward County3
• Fluvanna County3
• Lunenburg County3
• Mecklenburg County3
• Culpeper County3

1. February 24, 201638tornado warnings
2. February 25, 201610tornado warnings
3. June 16, 20163tornado warnings
4. July 29, 20163tornado warnings
5. May 3, 20162tornado warnings
6. June 17, 20162tornado warnings
7. September 28, 20162tornado warnings
8. June 23, 20161tornado warnings

Alerts in force nowTornadoes on recordThe radar archive20152017

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.