Alert archive / Guam / Special Marine Warnings

Special Marine Warnings in Guam, 2021

3 special marine warnings in 2021. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of special marine warnings reaches back to 1986.

Special Marine Warnings
3
Busiest month
July1 special marine warnings
Busiest day
July 21, 20211 special marine warnings

Over time

By month

The alerts

Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeCountiesLasted
Jul 20, 10:09 PM CDTSpecial Marine WarningGUM96 min
Aug 21, 12:20 AM CDTSpecial Marine WarningGUM25 min
Oct 3, 9:34 PM CDTSpecial Marine WarningGUM116 min

The busiest days

Days with the most alerts issued, by UTC date.

  1. July 21, 20211special marine warnings
  2. August 21, 20211special marine warnings
  3. October 4, 20211special marine warnings

Nearby

Alerts in force nowTornadoes on recordThe radar archive20202022

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. Rebuilt daily.