Flood Watch
Issued when there's a possibility of flooding within 12–48 hours
Based on Merged Mean Areal Precipitation at 1730 IST, rainfall is up to 1 mm in last 6 hours and up to 7 mm in last 24 hours over few watersheds and neighborhood of Himachal Pradesh, Jammu & Kashmir & Ladakh, Uttarakhand and Tamil Nadu - Puducherry & Karaikal Met subdivisions. Land Surface Model shows few nearly saturated watersheds up to 60 to 70 % over Jammu & Kashmir & Ladakh and Uttarakhand Met subdivisions and up to 40 % soil saturation over remaining parts of the country
Generally speaking, the NWS issues flood alerts either on a county basis, or for particular rivers and streams. Those alerts are divided into several basic categories:
In the U.S., these alerts are distributed in Specific Area Message Encoding through the Emergency Alert System and the NOAA Weather Radio network.
In communities that lack a flood warning program but are interested in developing their own, the NWS can provide further guidance and technical support, as well as outreach and education to involved parties and community leadership. A flood warning system need not be expensive or overly complicated, and the benefits — protecting lives and property — far outweigh any potential complications or inconveniences.
When it comes to the installation and maintenance of gages, sensors, and other equipment, Fondriest Environmental can help you through every step of the process.
Issued when there's a possibility of flooding within 12–48 hours
Issued when widespread flooding is expected, or if flooding is already happening
Issued when flooding is expected along major streams, but people and property aren't threatened