Tornado and Severe Weather Awareness Week
The week of April 15-19 is Tornado and Severe Weather Awareness Week in Wisconsin. The National Weather Service in Wisconsin and Wisconsin Emergency Management are asking that everyone take time to go over their safety plans so that they will be ready when severe weather strikes. The time to prepare is before the storms hit.
On Friday, April 19, a tornado drill will be conducted. At 1 pm, a test Tornado Watch will be issued for all of Wisconsin and will be broadcast on NOAA Weather Radio. At 1:45 pm, the NWS Green Bay office will issue a test Tornado Warning. The test warning will be broadcast as a test on NOAA Weather Radio using the real Tornado Warning code. The drill will conclude at 2 pm.
Here’s the schedule for the tornado drill:
1:00 p.m. - A test Tornado Watch is issued for all of Wisconsin by the NWS Storm Prediction Center
1:45 p.m. - NWS offices in Wisconsin issue test Tornado Warnings using actual Tornado Warning code (broadcast will state this is a test)
2 p.m. - Drill ends with the issuances of test Severe Weather Statements
Wisconsin averages 23 tornadoes per year, with most tornadoes occurring from mid-afternoon into the early evening. The peak tornado season in Wisconsin is May through August, with June having the greatest number of tornadoes. A record-setting 62 tornadoes occurred in 2005. In 2012, Wisconsin had only 4 tornadoes.
The "average" Wisconsin tornado has a 10 minute duration, a path length of about 6 miles, and a damage width of about 125 yards.
Another hazard of the warm-season is powerful, straight-line thunderstorm winds that can exceed 60 mph. Every year Wisconsin will get a few storms that generate hurricane-force winds of at least 75 to 100 mph. Severe Thunderstorm Warnings are issued for these wind events.
Large hail is also a hazard with thunderstorms. Severe Thunderstorm Warnings are also issued for storms with hail of at least 1" in diameter.
Other warm-season hazards localized flash floods or widespread river and lowland flooding, lightning, and excessive heat.
|NOAA Weather Radio||Flash Floods||Tornado Basics|
|Tornado Safety||Wisconsin's Tornadoes||Severe Thunderstorms|
|Lightning||Watches and Warnings
||U.S. Weather Hazards|