NWS Survey Findings from the Marshall/Putnam Tornado on February 8, 2024

Overview

A small complex of fast-moving storms developed late in the afternoon on Thursday Feb 8th, 2024. Environmental parameters were supportive of strong storms across north-central Illinois, with a few of them developing rotation as observed by the NWS Lincoln WSR-88D doppler radar. The storms initially produced hail, with sizes ranging from peas to one inch. One storm intensified to the point of producing a tornado in northern Marshall County, around 2 miles south of Henry. The tornado moved at 45 mph to the northeast, crossing into Putnam county around 4:44 PM CST. The tornado damaged some grain bins and outbuildings along with uprooting or snapping several large trees along it's nearly 10 mile path.

Tornado
Radar
Storm Reports

Tornadoes

Henry Tornado
Marshall-Putnam Counties

Date	February 8, 2024
Time (Local)	4:40 pm CST
EF Rating	EF1
Est. Peak Winds	110 mph
Path Length	9.93 miles
Max Width	100 yds
Injuries/Deaths	0/0
Summary: Tornado touched down at 4:40 pm CST just east of Hwy 26 about 2 miles south of Henry. It tracked northeast through rural portions of Marshall and Putnam counties, uprooting or snapping several large trees and damaging outbuildings. The tornado dissipated at 4:52 pm CST in an open field about 2 miles south of McNabb, as was reported by a storm chaser. The tornado was on the ground for 12 minutes.

Track Map

Downloadable KMZ File

The Enhanced Fujita (EF) Scale classifies tornadoes into the following categories:

EF0 Weak 65-85 mph	EF1 Moderate 86-110 mph	EF2 Significant 111-135 mph	EF3 Severe 136-165 mph	EF4 Extreme 166-200 mph	EF5 Catastrophic 200+ mph

Radar

Header


4:37 PM - 3 mins before tornado development	4:40 PM CT - Time of tornado touchdown	4:42 PM CT - 2 minutes after tornado touchdown	4:44 PM CT - 4 minutes after touchdown and the time it crossed into Putnam County

Storm Reports

NWUS53 KILX 090144
LSRILX

Preliminary Local Storm Report...Summary
National Weather Service Lincoln IL
744 PM CST Thu Feb 8 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0440 PM     Tornado          2 S Henry               41.08N 89.36W
02/08/2024  EF1              Marshall           IL   NWS Storm Survey

            Tornado developed 2 miles south of Henry and
            tracked northeast through rural portions of
            northern Marshall and southeast Putnam
            Counties, damaging trees and outbuildings.
            The tornado dissipated 2 miles south of
            McNabb. Path length 9.9 miles, max width 100
            yards. Max wind speed estimated 110 mph.
            This updates previous LSR.


0541 PM     Hail             3 SE South Pekin        40.46N 89.62W
02/08/2024  E0.88 inch       Tazewell           IL   Emergency Mngr



0540 PM     Hail             Metamora                40.79N 89.36W
02/08/2024  E0.88 inch       Woodford           IL   Emergency Mngr



0530 PM     Hail             Manito                  40.43N 89.78W
02/08/2024  E0.88 inch       Mason              IL   Broadcast Media

            Pea to nickel size hail.

0520 PM     Hail             Bellevue                40.69N 89.68W
02/08/2024  E1.00 inch       Peoria             IL   Public



0517 PM     Hail             Havana                  40.30N 90.06W
02/08/2024  E0.70 inch       Mason              IL   Public

            Photo from social media.

0510 PM     Hail             Mapleton                40.57N 89.73W
02/08/2024  E1.00 inch       Peoria             IL   Broadcast Media

            Time estimated from radar.

0453 PM     Tstm Wnd Gst     Marshall County Airport 41.02N 89.39W
02/08/2024  M63 MPH          Marshall           IL   AWOS

            REPORTED AT KC75.

0445 PM     Hail             Saint David             40.49N 90.05W
02/08/2024  M0.75 inch       Fulton             IL   Public



0442 PM     Tornado          2 S Henry               41.08N 89.36W
02/08/2024                   Marshall           IL   Broadcast Media

            Brief touchdown in open field.

0442 PM     Hail             Henry                   41.11N 89.36W
02/08/2024  E0.75 inch       Marshall           IL   Trained Spotter



0419 PM     Hail             5 SE Camp Grove         41.03N 89.55W
02/08/2024  E0.75 inch       Marshall           IL   Public

            Report from mPING: Dime (0.75 in.).

0351 PM     Hail             Brimfield               40.84N 89.88W
02/08/2024  E0.75 inch       Peoria             IL   Public

            Report from mPING: Dime (0.75 in.).

0349 PM     Hail             Brimfield               40.84N 89.88W
02/08/2024  M0.88 inch       Peoria             IL   Broadcast Media



0342 PM     Hail             1 N Galesburg           40.97N 90.36W
02/08/2024  E0.50 inch       Knox               IL   Public

            Report from mPING: Half-inch (0.50 in.).

0338 PM     Hail             Galesburg               40.95N 90.37W
02/08/2024  M0.75 inch       Knox               IL   Broadcast Media

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