EF0 tornado in Perry County, Missouri
Tornado November 17, 2013 · Perry County, Missouri
The path drawn at its surveyed width of 50 yards (0.03 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
Peak winds were estimated near 70 mph in this brief tornado. Numerous small to medium trees and tree limbs were snapped.
The wider storm
Supercell thunderstorms developed along a pre-frontal low pressure trough over southeast Missouri. Very strong wind fields coupled with moderate amounts of instability resulted in a couple of supercell thunderstorms, both of which produced tornadoes. The storms moved through the warm sector of a low pressure system characterized by mixed-layer capes around 1000 j/kg. Southerly surface winds transported rich low-level moisture north of the Ohio River, with dew points in the mid 60's. Areas of partial sunshine immediately preceding the convection bolstered instability. The low level wind shear was very strong, with 0 to 1 km storm-relative helicity at or above 500. Strong southerly surface winds ahead of the storms gusted to around 45 mph during the late morning and early afternoon hours. These strong winds were along and northwest of a line from Poplar Bluff to Cape Girardeau.
Began near Frohna (37.6095, -89.6558).
Other tornadoes from the same storm system
1 more tornado the National Weather Service filed under this storm episode.
Source: NOAA Storm Events Database, event 480996. Narratives are written by the National Weather Service forecast office that issued the report.
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