WHERE did you see it? Report the location/approximate location of the event. Your severe weather report should be detailed but concise, and should address the following questions: Roofs partially peeled off homes and buildings. Weak structures (e.g., farm buildings, airplane hangars) may be severely damaged.ĩ0+ mph (78+ kt) Many large trees broken and uprooted. Roof may be partially peeled off industrial/commercial/ warehouse buildings. Mobile homes may be pushed off foundation or overturned. Shingles, awnings removed from houses damage to chimneys and antennas.ħ5-89 mph (65-77 kt) Widespread damage to trees with large limbs down or trees broken/uprooted. More significant damage to old/weak structures. A few loose shingles removed from houses.ĥ8-74 mph (50-64 kt) Large limbs break shallow rooted trees pushed over. Buildings partially under construction may be damaged. Old/weak structures (e.g., sheds, barns) may sustain minor damage (roof, doors). Light-weight loose objects (e.g., lawn furniture) tossed or toppled.Ĥ5-57 mph (39-49 kt) Large trees bend twigs, small limbs break and a few larger dead or weak branches may break. General Guidelines for Estimating Wind Speedsģ0-44 mph (26-39 kt) Whole trees in motion. FLOODING, flooding that impacts roads, homes or businesses.ĭamage to structures (roof, siding, windows, etc.)ĭamage to farm equipment, machinery, etc.Īgain, reports should provide as much detail as possible to describe the where, when, how, etc.WIND GUSTS, 58 mph or higher, specify estimate or measurement.
HAIL, quarter size or larger, report the largest size hailstone.WALL CLOUD, if organized, persistent, sustained rotation.FUNNEL CLOUD, if organized, persistent, sustained rotation.Use the guidelines below to help you make your report:Īlthough reporting criteria may vary slightly depending on the spotter network and local needs, these are the events the National Weather Service would like to know about as soon as possible: Change the warning type (from severe thunderstorm to tornado, for example)įor your reports to be the most useful, they should be as detailed, accurate and timely as possible.Your report becomes part of the warning decision making process, and is combined with radar data and other information and used by NWS forecasters to decide whether or not to: Spotter reports also help the NWS in the warning process. Spotter reports help your community by assisting local public safety officials in making critical decisions to protect lives – when to sound sirens, activate safety plans, etc. Spotters provide an invaluable service to their communities and to the National Weather Service. The Net Control will normally not take check-ins but he will take reports of the specific conditions that need to be reported to the NWS. When this happens, formal net procedures apply and you should not use the repeater to make any calls without getting permission from the Net Control operator. If the weather threat is serious enough to warrant, the Net Control operator will announce that our weather net is now “Active”. A liaison link between the county and the NWS office will already be established and a plan is in place to address the specific weather threat. Net Control operators will make regular announcements on the repeater concerning the weather threat and the anticipated time that Williamson County might be affected. You may still use the repeater system but keep your transmissions short and leave some extra time between your transmissions so the Net Control operator can break in if necessary. When severe weather is approaching we may shift to the “Stand-By” mode which means we are at a higher level of awareness. The normal day to day status for everyone is “Normal”. The EC and Planning Committee have procedures in place to deal with severe weather events that might affect not only our county but the entire Middle Tennessee area. The WCARES EC and members of the Planning Committee are routinely included in severe weather webinars with the National Weather Service (NWS) office in Old Hickory.
Please only send reports that meet standard reporting criteria, shown below. If you wish to monitor online, the Nashville NWS information can be found at. We will monitor and send out updates immediately from NWS, etc. Remember, if we activate the weather net, we do not take check-ins. For WCARES members the important thing to remember is that whenever a severe weather watch or warning is issued for Williamson County you should monitor the repeater system.
#Netcontrol example procedures tv#
The local commercial broadcast radio and TV stations do an excellent job in warning residents about possible severe weather conditions. Severe weather in Middle Tennessee can come in many forms to include severe thunderstorms, tornados, snow, sleet and ice.
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