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EF0 tornado in Montgomery County, Illinois
Tornado December 1, 2018 · Montgomery County, Illinois
NOAA records this tornado county by county. Its path ran through Montgomery County → Christian County; the totals above are for the whole tornado.
The path drawn at its surveyed width of 25 yards (0.01 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.
What the National Weather Service wrote
The tornado touched down just south of the Christian/Montgomery County line, near the intersection of E000 North Rd and N400 East Rd. It damaged an outbuilding by knocking out a wall and pushed it off it's foundation, before entering Christian County (WFO ILX County Warning Area). This segment of the tornado (Montgomery County IL) was rated EF0 with a path length of 0.06 miles and a max path width of 25 yards. No injuries or deaths were reported in Montgomery County. The entire tornado was rated EF0. It's path length was 3.1 miles with a max path width of 200 yards. No injuries or deaths were reported.
The wider storm
By late morning much of the rain shifted north and east of forecast area allowing partial
clearing to destabilize the atmosphere. Steep lapse rates due to relatively cold mid level temperatures southeast of the upper level low combined with strong low-mid level wind shear due to an 80-kt mid level wind max southeast of the upper level low. This led to the development of isolated low topped supercells along the northward moving warm front and ahead of the eastward moving cold front. Eight tornadoes were surveyed over WFO LSX's forecast area.
Began near Harvel (39.3480, -89.4577).
Other tornadoes from the same storm system
7 more tornadoes the National Weather Service filed under this storm episode.
Source: NOAA Storm Events Database, event 788459. Narratives are written by the National Weather Service forecast office that issued the report.
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