Alert archive / Illinois / Tornado Warnings in 2026
Tornado Warning 49, NWS Quad Cities, IA
NWS Quad Cities, IA issued this tornado warning at Apr 17, 2026, 7:44 PM CDT for Bureau County, Putnam County, Illinois. It was in force for 61 min. 9 reports 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
- Apr 17, 2026, 7:44 PM CDT (00:44 UTC)
- Expired
- Apr 17, 2026, 8:45 PM CDT
- In force
- 61 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Bureau County, IL, Putnam County, IL
The radar
The Quad Cities radar (KDVN), 106 km from the middle of the area, began a volume at 00:46 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 |
|---|---|---|---|
| Apr 17, 7:52 PM CDT | TSTM WND DMG | Tiskilwa, IL | Tree blown down. |
| Apr 17, 7:52 PM CDT | TSTM WND DMG | Tiskilwa, IL | Tree blown down. |
| Apr 17, 8:01 PM CDT | TSTM WND GST 58 | Hennepin, IL | A trained spotter measured a 58 MPH. |
| Apr 17, 8:01 PM CDT | TSTM WND GST 58 | Hennepin, IL | A trained spotter measured a 58 MPH. |
| Apr 17, 8:10 PM CDT | TSTM WND DMG | Spring Valley, IL | Multiple trees blown down. |
| Apr 17, 8:10 PM CDT | TSTM WND DMG | Spring Valley, IL | Multiple trees blown down. |
| Apr 17, 8:12 PM CDT | TORNADO | 2 Ese Arlington, IL | An EF-1 tornado developed in far eastern Bureau County, with estimated max winds of 90 mph. A barn sustained roofing damage. The tornado then moved NE into LaSalle County, resulting in damage to trees, power poles, and outbuildings. |
| Apr 17, 8:12 PM CDT | TORNADO | 4 Sw Mendota, IL | An NWS storm survey confirmed an EF-1 tornado with peak winds near 90 mph, path length of 14.9 miles, and maximum width near 700 yards started in Bureau County and moved into LaSalle County. The path was characterized by damage to farm outbuildings, power pole |
| Apr 17, 8:18 PM CDT | TSTM WND DMG | 5 Wnw Troy Grove, IL | A pole barn was severely damaged southwest of Mendota with large portions of siding removed and partial structural collapse. Time estimated using radar. |
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 |
|---|---|---|---|
| Apr 17, 12:40 PM CDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 0.7 hours before the alert went out and 100 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
- 30 J/kg
- Mixed-layer CIN
- -223 J/kg
- Mixed-layer LCL
- 1085 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 202 m²/s²
- 0-3 km storm-relative helicity
- 202 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
347
WFUS53 KDVN 180044
TORDVN
ILC011-155-180145-
/O.NEW.KDVN.TO.W.0049.260418T0044Z-260418T0145Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Quad Cities IA/IL
744 PM CDT Fri Apr 17 2026
The National Weather Service in the Quad Cities has issued a
* Tornado Warning for...
Putnam County in north central Illinois...
Eastern Bureau County in north central Illinois...
* Until 845 PM CDT.
* At 744 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Providence, or 10 miles southwest of Princeton,
moving northeast at 65 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
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 dangerous storm will be near...
Princeton, Hennepin, DePue, Tiskilwa, Bureau Junction, Lake
Thunderbird, Coal Hollow, and Bureau County Fairgrounds around
750 PM CDT.
Spring Valley, Ladd, Mark, Malden, Seatonville, Dover,
Hollowayville, Ottville, and Zearing around 755 PM CDT.
Dalzell, Cherry, and Arlington around 800 PM CDT.
Other locations in the path of this tornadic thunderstorm include La
Moille.
This includes the following highways...
Interstate 80 in Illinois between mile markers 54 and 72.
Interstate 180 between mile markers 1 and 13.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 4110 8936 4112 8934 4115 8933 4115 8963
4116 8964 4123 8964 4124 8970 4159 8928
4158 8917 4111 8916
TIME...MOT...LOC 0044Z 236DEG 55KT 4125 8958
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
Gunkel2 follow-up statements
769
WWUS53 KDVN 180059
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
759 PM CDT Fri Apr 17 2026
ILC011-155-180145-
/O.CON.KDVN.TO.W.0049.000000T0000Z-260418T0145Z/
Putnam IL-Bureau IL-
759 PM CDT Fri Apr 17 2026
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR PUTNAM
AND EASTERN BUREAU COUNTIES...
At 759 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Hollowayville, or near Hennepin, moving east at 65
mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Spring Valley, Granville, Ladd, Dalzell, Mark, Cherry and
Standard.
This includes the following highways...
Interstate 80 in Illinois between mile markers 54 and 72.
Interstate 180 between mile markers 1 and 13.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4110 8936 4112 8934 4115 8933 4115 8949
4136 8956 4159 8928 4158 8917 4111 8916
TIME...MOT...LOC 0059Z 270DEG 55KT 4135 8932
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
Gunkel693
WWUS53 KDVN 180113
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
813 PM CDT Fri Apr 17 2026
ILC011-155-180145-
/O.CON.KDVN.TO.W.0049.000000T0000Z-260418T0145Z/
Putnam IL-Bureau IL-
813 PM CDT Fri Apr 17 2026
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR PUTNAM
AND NORTHEASTERN BUREAU COUNTIES...
At 813 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Troy Grove, or near Mendota, moving northeast at 65
mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
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.
Locations impacted include...
Hennepin, Spring Valley, DePue, Granville, Ladd, La Moille, Dalzell,
McNabb, Mark, Cherry, Seatonville, Magnolia, Standard, Arlington,
Hollowayville, Zearing, Ottville, and Florid.
This includes Interstate 80 in Illinois between mile markers 64 and
72.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 4110 8936 4112 8934 4115 8933 4155 8933
4159 8928 4158 8917 4111 8916
TIME...MOT...LOC 0113Z 236DEG 55KT 4147 8908
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
GunkelThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 17, 7:08 PM CDT | Tornado Warning | DVN | Hancock, McDonough | 52 min |
| Apr 17, 7:42 PM CDT | Severe Thunderstorm Warning | DVN | Bureau, Putnam | 63 min |
| Apr 17, 8:46 PM CDT | Severe Thunderstorm Warning | DVN | Bureau, Putnam | 23 min |
| Apr 18, 5:50 AM CDT | River Flood Warning | DVN | Hancock, McDonough | 70 hr |
| Apr 18, 11:22 AM CDT | River Flood Watch | DVN | Rock Island, Whiteside | 58 hr |
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.