he National Weather Service (NWS) is the official U.S. government agency charged with issuing weather watches, warnings, and advisories and is the source used by iAlert.com. Below is the criteria used by NWS forecasters when issuing a tropical storm watch or tropical storm warning for the affected coastline.
TROPICAL STORM WATCH: means tropical storm conditions of 39-73 mph (34-63 kts or 63-118 kph) are possible within 36 hours for affected coastline.
TROPICAL STORM WARNING: means tropical storm conditions of 39-73 mph (34-63 kts or 63-118 kph) are expected for defined coastal area within 24 hours or less.
A tropical storm is less powerful than a hurricane. Criteria for Hurricane Warning
Learn more about the Saffir-Simpson Hurricane Wind Scale.
Looking for the criteria for a tornado warning, criteria of a severe thunderstorm warning, or weather glossary? Criteria For a Tropical Storm Warning
T
he National Weather Service (NWS) is the official U.S. government agency charged with issuing weather watches, warnings, and advisories and is the source used by iAlert.com. Below is the criteria used by NWS forecasters when issuing a tropical storm watch or tropical storm warning for the affected coastline.
TROPICAL STORM WATCH: means tropical storm conditions of 39-73 mph (34-63 kts or 63-118 kph) are possible within 36 hours for affected coastline.
TROPICAL STORM WARNING: means tropical storm conditions of 39-73 mph (34-63 kts or 63-118 kph) are expected for defined coastal area within 24 hours or less.
A tropical storm is less powerful than a hurricane. Criteria for Hurricane Warning
Learn more about the Saffir-Simpson Hurricane Wind Scale.
Looking for the criteria for a tornado warning, criteria of a severe thunderstorm warning, or weather glossary?
he National Weather Service (NWS) is the official U.S. government agency charged with issuing weather watches, warnings, and advisories and is the source used by iAlert.com. Below is the criteria used by NWS forecasters when issuing a tropical storm watch or tropical storm warning for the affected coastline.
TROPICAL STORM WATCH: means tropical storm conditions of 39-73 mph (34-63 kts or 63-118 kph) are possible within 36 hours for affected coastline.
TROPICAL STORM WARNING: means tropical storm conditions of 39-73 mph (34-63 kts or 63-118 kph) are expected for defined coastal area within 24 hours or less.
A tropical storm is less powerful than a hurricane. Criteria for Hurricane Warning
Learn more about the Saffir-Simpson Hurricane Wind Scale.
Looking for the criteria for a tornado warning, criteria of a severe thunderstorm warning, or weather glossary?
This entry was posted in Weather Glossary and tagged coastal area, coastline, glossary, national weather service, Tropical, tropical storm conditions, tropical storm watch, weather glossary, weather watches. Bookmark the permalink.
Read More
Panama Earthquake: Magnitude 7.7 Strikes Near Pitaloza Arriba, USGS Issues RED Alert
USGS ShakeMap of the M7.7 Panama earthquake. The star marks the epicenter; red and orange contours show the strongest estimated shaking. Source: U.S. Geological Survey. A powerful Panama earthquake struck the Azuero Peninsula on Friday, October…
Hurricane Isaias Landfall Expected Tonight on the Northern Gulf Coast as Storm Nears Major Hurricane Strength
Hurricane Isaias position at 7 AM CDT Friday, October 9, 2026, with the NHC forecast track and cone toward the northern Gulf Coast and active coastal and inland warnings. Map: iAlert.com Hurricane Isaias landfall is expected…
Florida Panhandle Tornado Risk: SPC Slight Risk as Hurricane Isaias Nears Pensacola, Oct 9, 2026
Florida Panhandle tornado risk headlines the NOAA Storm Prediction Center Day 1 Convective Outlook valid Friday, October 9, 2026, issued 05:37 UTC (1:37 am EDT / 12:37 am CDT). It places a Slight Risk, level 2…