Alert archive / Illinois / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 66, NWS Quad Cities, IA

April 2, 2026Bureau County, Putnam County, Illinois

NWS Quad Cities, IA issued this severe thunderstorm warning at Apr 2, 2026, 6:43 PM CDT for Bureau County, Putnam County, Illinois. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 2, 2026, 6:43 PM CDT (23:43 UTC)
Expired
Apr 2, 2026, 7:30 PM CDT
In force
47 min
Issued by
NWS Quad Cities, IA
Area
Storm-based polygon
Tornado
Possible
Hail
1.0 in
Wind
60.0 mph

Counties Bureau County, IL, Putnam County, IL

The radar

The Quad Cities radar (KDVN), 104 km from the middle of the area, began a volume at 23:43 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 2, 1:43 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 11.7 hours before the alert went out and 145 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.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 12:00Z on 2026-04-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 19 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2026-04-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 453 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
19 J/kg
Mixed-layer CIN
-278 J/kg
Mixed-layer LCL
846 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
453 m²/s²
0-3 km storm-relative helicity
450 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Quad Cities, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 2, 6:30 PM CDT, 13 minutes earlier.

Area forecast discussion, Apr 2, 6:30 PM CDT, 13 minutes before
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Hazardous weather outlook, Apr 2, 2:47 PM CDT, 3 hours 56 minutes before
Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
247 PM CDT Thu Apr 2 2026

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-032000-
Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson-Iowa-Johnson-
Cedar-Clinton-Muscatine-Scott-Keokuk-Washington-Louisa-Jefferson-
Henry IA-Des Moines-Van Buren-Lee-Jo Daviess-Stephenson-Carroll-
Whiteside-Rock Island-Henry IL-Bureau-Putnam-Mercer-Henderson-
Warren-Hancock-McDonough-Scotland-Clark-
247 PM CDT Thu Apr 2 2026

This Hazardous Weather Outlook is for portions of north central
Illinois...northwest Illinois...west central Illinois...east
central Iowa...northeast Iowa...southeast Iowa and northeast
Missouri.

.DAY ONE...THIS AFTERNOON AND TONIGHT

An Enhanced risk, or level 3 of 5 risk for severe weather covers
much of the Outlook area. The risk of severe storms will be
between 2 and 8 pm this evening. Damaging winds and tornadoes are
the primary hazards.

Storms will be moving very fast, which will result in
significantly less time to act. For this reason, it is important
to plan now where you will shelter in the event severe weather
strikes, and make sure you stay weather aware.

A Wind Advisory is also in effect this afternoon for areas mainly
south of a line from Mount Carroll, Illinois to Washington, Iowa
where southerly winds will gust to around 45 mph.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

A Slight to Enhanced risk, or Level 2 and 3 out of 5 risk for
severe weather covers much of the Outlook area on Friday. The risk
for severe storms is primarily Friday evening into the early
overnight hours of Saturday morning. Large hail, damaging winds
and tornadoes are all possible. Storms will also bring periods of
heavy rain and the potential for localized flooding.

Below freezing temperatures will be possible early next week that
may cause damage to sensitive vegetation.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will be needed this afternoon into early evening,
and again Friday evening.

GROSS

In the hours before

Local storm report, Apr 2, 6:21 PM CDT, 22 minutes before
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Local storm report, Apr 2, 6:23 PM CDT, 20 minutes before
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Local storm report, Apr 2, 6:24 PM CDT, 19 minutes before
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Local storm report, Apr 2, 6:31 PM CDT, 12 minutes before
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Local storm report, Apr 2, 6:35 PM CDT, 8 minutes before
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Local storm report, Apr 2, 6:38 PM CDT, 5 minutes before
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The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 2, 2:50 AM CDTWind AdvisoryDVNDes Moines, Henry, Jefferson, Lee, Louisa, Muscatine and 2 more16 hr
Apr 2, 3:18 PM CDTTornado WarningDVNJefferson, Keokuk, Washington42 min
Apr 2, 3:56 PM CDTTornado WarningDVNJohnson, Washington49 min
Apr 2, 3:59 PM CDTSevere Thunderstorm WarningDVNBenton, Iowa, Johnson, Keokuk, Linn, Washington61 min
Apr 2, 4:12 PM CDTSevere Thunderstorm WarningDVNHenry, Jefferson, Keokuk, Louisa, Washington63 min
Apr 2, 4:27 PM CDTTornado Warning Tornado observedDVNCedar, Johnson, Muscatine48 min
Apr 2, 4:28 PM CDTSevere Thunderstorm WarningDVNDes Moines, Louisa, Scott62 min
Apr 2, 4:56 PM CDTSevere Thunderstorm WarningDVNCedar, Clinton, Jackson, Johnson, Jones, Muscatine and 1 more64 min
Apr 2, 5:05 PM CDTTornado WarningDVNCedar, Clinton, Scott25 min
Apr 2, 5:14 PM CDTSevere Thunderstorm WarningDVNClinton, Jackson46 min
Apr 2, 5:29 PM CDTTornado WarningDVNClinton, Jackson46 min
Apr 2, 5:46 PM CDTSevere Thunderstorm WarningDVNClinton, Scott44 min
Apr 2, 10:03 AM CDTRiver Flood WarningDVNHancock, McDonough60 hr
Apr 2, 5:16 PM CDTSevere Thunderstorm WarningDVNHenry, Rock Island, Whiteside59 min
Apr 2, 5:18 PM CDTTornado WarningDVNWarren27 min
Apr 2, 6:04 PM CDTSevere Thunderstorm WarningDVNCarroll, Jo Daviess, Stephenson, Whiteside56 min
Apr 2, 6:07 PM CDTSevere Thunderstorm Warning Considerable damage threatDVNCarroll, Whiteside23 min
Apr 2, 6:14 PM CDTSevere Thunderstorm WarningDVNBureau, Putnam46 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2026Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.