08/21/2026
⚠️ THIS ALERT IS NO LONGER ACTIVE OR HAS BEEN SUPERSEDED BY ANOTHER ALERT ⚠️
Severe Thunderstorm Warning issued August 21 at 5:58PM CDT until August 21 at 6:30PM CDT by NWS Chicago IL
SUMMARY:
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At 557 PM CDT, a severe thunderstorm was located northwest of
Mendota, moving southeast at 20 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Mendota, Earlville, Leland, Paw Paw, Compton, Troy Grove, West
Brooklyn, Prairie Center, Triumph, and Harding.
AFFECTS: De Kalb, IL; La Salle, IL; Lee, IL
INSTRUCTION: For your protection move to an interior room on the lowest floor of
a building.
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
URL TO CAMPAIGN DETAILS (WITH UP-TO-DATE WEATHER ALERT DETAILS):
https://hrpow.us/mfx7ArU
URGENCY: Immediate
SEVERITY: Severe
CERTAINTY: Observed
EFFECTIVE DATE: 8/21/26 5:58 PM CST
EXPIRATION DATE: 8/21/26 6:30 PM CST
FULL ALERT TEXT:
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At 557 PM CDT, a severe thunderstorm was located northwest of
Mendota, moving southeast at 20 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Mendota, Earlville, Leland, Paw Paw, Compton, Troy Grove, West
Brooklyn, Prairie Center, Triumph, and Harding.
See the full message w/ attachments at:
https://hrpow.us/mfx7ArU