Alert archive / Illinois / Tornado Warnings in 2026
Tornado Warning 91, NWS Quad Cities, IA
NWS Quad Cities, IA issued this tornado warning at Aug 21, 2026, 7:22 PM CDT for Putnam County, Illinois. It was in force for 23 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 21, 2026, 7:22 PM CDT (00:22 UTC)
- Expired
- Aug 21, 2026, 7:45 PM CDT
- In force
- 23 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Tornado
- Observed
- Hail
- 1.0 in
County Putnam County, IL
The radar
The Chicago radar (KLOT), 105 km from the middle of the area, began a volume at 00:24 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 21, 7:34 PM CDT | FUNNEL CLOUD | 3 S Granville, IL | Based on multiple spotter photos and reports. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 21, 2:57 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 0.4 hours before the alert went out and 111 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 3453 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 863 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 165 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 7.8
The text
As transmitted.
014
WFUS53 KDVN 220022
TORDVN
ILC155-220045-
/O.NEW.KDVN.TO.W.0091.260822T0022Z-260822T0045Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Quad Cities IA/IL
722 PM CDT Fri Aug 21 2026
The National Weather Service in the Quad Cities has issued a
* Tornado Warning for...
Northeastern Putnam County in north central Illinois...
* Until 745 PM CDT.
* At 722 PM CDT, a confirmed tornado was located over Florid, or near
Hennepin, moving east at 15 mph.
HAZARD...Damaging tornado and quarter size hail.
SOURCE...Weather spotters confirmed tornado.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* The tornado will be near...
Granville, McNabb, and Standard around 725 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
&&
LAT...LON 4118 8932 4131 8931 4131 8928 4132 8926
4131 8923 4131 8916 4116 8916
TIME...MOT...LOC 0022Z 290DEG 15KT 4123 8925
TORNADO...OBSERVED
MAX HAIL SIZE...1.00 IN
$$
Gross2 follow-up statements
317
WWUS53 KDVN 220032
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
732 PM CDT Fri Aug 21 2026
ILC155-220045-
/O.CON.KDVN.TO.W.0091.000000T0000Z-260822T0045Z/
Putnam IL-
732 PM CDT Fri Aug 21 2026
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR EAST
CENTRAL PUTNAM COUNTY...
At 731 PM CDT, a confirmed tornado was located south of Granville
McNabb, moving east at 15 mph.
HAZARD...Damaging tornado and quarter size hail.
SOURCE...Weather spotters confirmed tornado.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornado will be near...
McNabb and Standard around 735 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
&&
LAT...LON 4118 8927 4126 8928 4127 8928 4127 8922
4126 8916 4116 8916
TIME...MOT...LOC 0031Z 290DEG 15KT 4122 8920
TORNADO...OBSERVED
MAX HAIL SIZE...1.00 IN
$$
Gross236
WWUS53 KDVN 220043
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
743 PM CDT Fri Aug 21 2026
ILC155-220052-
/O.EXP.KDVN.TO.W.0091.000000T0000Z-260822T0045Z/
Putnam IL-
743 PM CDT Fri Aug 21 2026
...THE TORNADO WARNING FOR EAST CENTRAL PUTNAM COUNTY WILL EXPIRE AT
745 PM CDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However, heavy
rain is still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
north central Illinois.
&&
LAT...LON 4118 8927 4126 8928 4127 8928 4127 8922
4126 8916 4116 8916
TIME...MOT...LOC 0042Z 290DEG 15KT 4120 8914
$$
GrossThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 8:09 PM CDT | Tornado Warning | DVN | Putnam | 21 min |
| Aug 21, 8:12 PM CDT | Flash Flood Warning | DVN | Bureau, Putnam | 4 hr |
| Aug 21, 8:13 PM CDT | Severe Thunderstorm Warning | DVN | Bureau, Henry, Rock Island, Whiteside | 34 min |
| Aug 21, 8:54 PM CDT | Special Weather Statement | DVN | Bureau, Henry, Mercer | 66 min |
| Aug 21, 9:22 PM CDT | Severe Thunderstorm Warning | DVN | Henry | 23 min |
Nearby
Tornado Warnings in Illinois, 2026Every tornado warning in 2026Tornadoes in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.