Alert archive / Illinois / Tornado Warnings in 2026

Tornado Warning 33, NWS Quad Cities, IA

April 17, 2026Jackson County, Iowa; Jo Daviess County, Stephenson County, Illinois

NWS Quad Cities, IA issued this tornado warning at Apr 17, 2026, 2:48 PM CDT for Jackson County, Iowa; Jo Daviess County, Stephenson County, Illinois. It was in force for 42 min. 26 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, 2:48 PM CDT (19:48 UTC)
Expired
Apr 17, 2026, 3:30 PM CDT
In force
42 min
Issued by
NWS Quad Cities, IA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.75 in

Counties Jackson County, IA, Jo Daviess County, IL, Stephenson County, IL

The radar

The Quad Cities radar (KDVN), 90 km from the middle of the area, began a volume at 19:48 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

TimeReportWhereRemark
Apr 17, 2:52 PM CDTHAIL 1.52 E Galena, ILReport from mPING: Ping Pong Ball (1.50 in.).
Apr 17, 2:52 PM CDTHAIL 1.52 E Galena, ILReport from mPING: Ping Pong Ball (1.50 in.).
Apr 17, 2:52 PM CDTHAIL 1.52 E Galena, ILReport from mPING: Ping Pong Ball (1.50 in.).
Apr 17, 2:54 PM CDTHAIL 1.52 W Galena Territory, ILReport from mPING: Ping Pong Ball (1.50 in.).
Apr 17, 2:54 PM CDTHAIL 1.52 W Galena Territory, ILReport from mPING: Ping Pong Ball (1.50 in.).
Apr 17, 2:55 PM CDTHAIL 1.751 S Rice, IL
Apr 17, 2:55 PM CDTHAIL 1.751 S Rice, IL
Apr 17, 2:57 PM CDTHAIL 1.752 S Galena Territory, ILReport from mPING: Golf Ball (1.75 in.).
Apr 17, 2:57 PM CDTHAIL 1.752 S Galena Territory, ILReport from mPING: Golf Ball (1.75 in.).
Apr 17, 2:57 PM CDTHAIL 1.752 S Galena Territory, ILReport from mPING: Golf Ball (1.75 in.).
Apr 17, 2:59 PM CDTHAIL 1.752 N Rodden, ILReport from mPING: Golf Ball (1.75 in.).
Apr 17, 2:59 PM CDTHAIL 1.752 N Rodden, ILReport from mPING: Golf Ball (1.75 in.).
Apr 17, 3:00 PM CDTHAIL 11 E Galena Territory, ILReport from mPING: Quarter (1.00 in.).
Apr 17, 3:00 PM CDTHAIL 11 E Galena Territory, ILReport from mPING: Quarter (1.00 in.).
Apr 17, 3:01 PM CDTHAIL 1.751 E Rodden, ILReport from mPING: Golf Ball (1.75 in.).
Apr 17, 3:01 PM CDTHAIL 1.751 E Rodden, ILReport from mPING: Golf Ball (1.75 in.).
Apr 17, 3:05 PM CDTHAIL 1.5Hanover, IL
Apr 17, 3:05 PM CDTHAIL 1.5Hanover, IL
Apr 17, 3:13 PM CDTHAIL 1.75Elizabeth, IL
Apr 17, 3:26 PM CDTTSTM WND GST 701 Sse Warren, ILWind out of the west.
Apr 17, 3:26 PM CDTTSTM WND GST 701 Sse Warren, ILWind out of the west.
Apr 17, 3:30 PM CDTHAIL 1.25Elizabeth, IL
Apr 17, 3:30 PM CDTHAIL 1.25Elizabeth, IL
Apr 17, 3:32 PM CDTTORNADO3 Nne Kent, ILA high-end EF2, possible multi-vortex, tornado with estimated peak winds around 130 mph started along Highway 20, SW of Lena IL, and tracked through Lena before lifting just SW of McConnell. Extensive damage was noted to trees, with a lot of damage to roofs an
Apr 17, 3:32 PM CDTTORNADO3 Nne Kent, ILA high-end EF2, possible multi-vortex, tornado with estimated peak winds around 130 mph started along Highway 20, SW of Lena IL, and tracked through Lena before lifting just SW of McConnell. Extensive damage was noted to trees, with a lot of damage to roofs an
Apr 17, 3:36 PM CDTTORNADO3 Nne Kent, ILCorrects tornado start time from 3 NNE Kent. A high-end EF2, possible multi-vortex, tornado with estimated peak winds around 130 mph started along Highway 20, SW of Lena IL, and tracked through Lena before lifting just SW of McConnell. Extensive damage was not

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this tornado warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

IssuedProductOfficeLasted
Apr 17, 12:40 PM CDTTornado WatchSPC9 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 7.8 hours before the alert went out and 270 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 2026-04-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 84 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 2026-04-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 65 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
84 J/kg
Mixed-layer CIN
-150 J/kg
Mixed-layer LCL
1053 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
65 m²/s²
0-3 km storm-relative helicity
164 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

460 
WFUS53 KDVN 171948
TORDVN
ILC085-177-IAC097-172030-
/O.NEW.KDVN.TO.W.0033.260417T1948Z-260417T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Quad Cities IA/IL
248 PM CDT Fri Apr 17 2026

The National Weather Service in the Quad Cities has issued a

* Tornado Warning for...
  Jo Daviess County in northwestern Illinois...
  Western Stephenson County in northwestern Illinois...
  Northeastern Jackson County in east central Iowa...

* Until 330 PM CDT.

* At 247 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Guilford, or 7 miles east of Galena, moving east 
  at 30 mph. Another tornadic thunderstorm was located near Bellevue 
  moving east. 

  HAZARD...Tornado and golf ball size hail.

  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...
  Elizabeth, Woodbine, Apple River, Schapville, Apple River Canyon 
  State Park, Canyon Camp, Elizabeth Fairgrounds, and Apple Canyon 
  Lake around 255 PM CDT.
  Stockton around 300 PM CDT.
  Warren, Nora, Stockton Airport, and Jo Daviess County Fairgrounds 
  around 305 PM CDT.

Other locations in the path of this tornadic thunderstorm include
Waddams Grove, Kent and Willow.

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.

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
the Quad Cities.

&&

LAT...LON 4220 8982 4219 9046 4251 9037 4250 8978
TIME...MOT...LOC 1947Z 273DEG 28KT 4242 9028 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.75 IN

$$

McClure
6 follow-up statements
241 
WWUS53 KDVN 171954
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
254 PM CDT Fri Apr 17 2026

ILC085-177-IAC097-172030-
/O.CON.KDVN.TO.W.0033.000000T0000Z-260417T2030Z/
Jo Daviess IL-Stephenson IL-Jackson IA-
254 PM CDT Fri Apr 17 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR JO
DAVIESS...WESTERN STEPHENSON AND NORTHEASTERN JACKSON COUNTIES...

At 253 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Schapville, or 9 miles east of Galena, moving east 
at 25 mph. Another storm capable of producing a tornado was located 
northwest of Hanover also moving east. 

HAZARD...Tornado and golf ball size hail.

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...
  Woodbine, Apple River, Schapville, Apple River Canyon State Park, 
  Canyon Camp, and Apple Canyon Lake around 300 PM CDT.
  Stockton around 305 PM CDT.

Other locations in the path of this tornadic thunderstorm include
Warren, Nora, Stockton Airport and Jo Daviess County Fairgrounds.

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.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.

&&

LAT...LON 4220 8982 4219 9046 4251 9037 4250 8978
TIME...MOT...LOC 1953Z 267DEG 22KT 4239 9024 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.75 IN

$$

McClure
340 
WWUS53 KDVN 171957
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
257 PM CDT Fri Apr 17 2026

ILC085-177-IAC097-172030-
/O.CON.KDVN.TO.W.0033.000000T0000Z-260417T2030Z/
Jo Daviess IL-Stephenson IL-Jackson IA-
257 PM CDT Fri Apr 17 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR JO
DAVIESS...WESTERN STEPHENSON AND NORTHEASTERN JACKSON COUNTIES...

At 257 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Schapville, or 11 miles east of Galena, moving east 
at 25 mph. This storm has had a history of producing a tornado near 
Galena territories relayed by Emergency Management. 

HAZARD...Tornado and golf ball size hail.

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...
  Woodbine, Apple River, Schapville, Apple River Canyon State Park, 
  Canyon Camp, and Apple Canyon Lake around 300 PM CDT.
  Stockton around 305 PM CDT.
  Warren, Nora, and Stockton Airport around 310 PM CDT.

Other locations in the path of this tornadic thunderstorm include
Waddams Grove, Jo Daviess County Fairgrounds, Lena, Kent, Lake Le-
Aqua-na State Park and Winslow.

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.

This storm has a history of producing tornadoes.  Seek shelter now!

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.

&&

LAT...LON 4220 8982 4219 9046 4251 9037 4250 8978
TIME...MOT...LOC 1957Z 267DEG 22KT 4240 9021 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.75 IN

$$

McClure
164 
WWUS53 KDVN 172005
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
305 PM CDT Fri Apr 17 2026

IAC097-172014-
/O.CAN.KDVN.TO.W.0033.000000T0000Z-260417T2030Z/
Jackson IA-
305 PM CDT Fri Apr 17 2026

...THE TORNADO WARNING FOR NORTHEASTERN JACKSON COUNTY IS
CANCELLED...

The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 800 PM CDT for northwestern
Illinois...and east central Iowa.

&&

LAT...LON 4219 9031 4251 9031 4250 8978 4220 8982
TIME...MOT...LOC 2004Z 256DEG 28KT 4244 9013 

$$

ILC085-177-172030-
/O.CON.KDVN.TO.W.0033.000000T0000Z-260417T2030Z/
Jo Daviess IL-Stephenson IL-
305 PM CDT Fri Apr 17 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR JO
DAVIESS AND WESTERN STEPHENSON COUNTIES...

At 304 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Apple Canyon Lake, or 15 miles east of Galena, 
moving east at 30 mph. Another severe thunderstorm capable of 
producing a tornado was located near Woodbine moving east.  

HAZARD...Tornado and golf ball size hail.

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...
  Stockton, Warren, Apple River, Nora, Apple River Canyon State 
  Park, and Jo Daviess County Fairgrounds around 310 PM CDT.
  Waddams Grove around 315 PM CDT.

Other locations in the path of this tornadic thunderstorm include
Lena, Winslow and Lake Le-Aqua-na State Park.

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.

This storm has a history of producing tornadoes.  Seek shelter now!

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.

&&

LAT...LON 4219 9031 4251 9031 4250 8978 4220 8982
TIME...MOT...LOC 2004Z 256DEG 28KT 4244 9013 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.75 IN

$$

McClure
153 
WWUS53 KDVN 172015
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
315 PM CDT Fri Apr 17 2026

ILC085-177-172030-
/O.CON.KDVN.TO.W.0033.000000T0000Z-260417T2030Z/
Jo Daviess IL-Stephenson IL-
315 PM CDT Fri Apr 17 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR JO
DAVIESS AND WESTERN STEPHENSON COUNTIES...

At 314 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Apple River Canyon State Park, or 16 miles south of
Darlington, moving east at 25 mph. 

HAZARD...Tornado and golf ball size hail.

SOURCE...Weather spotters reported a rotating wall cloud south of 
         Warren. Golf ball sized hail was also reported in 
         Elizabeth. 

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...
  Stockton, Warren, Nora, Waddams Grove, and Jo Daviess County 
  Fairgrounds around 320 PM CDT.
  Lena and Lake Le-Aqua-na State Park around 325 PM CDT.

Other locations in the path of this tornadic thunderstorm include
Winslow.

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.

This storm has a history of producing tornadoes.  Seek shelter now!

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.

&&

LAT...LON 4219 9031 4251 9031 4250 8978 4220 8982
TIME...MOT...LOC 2014Z 268DEG 22KT 4245 9007 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.75 IN

$$

McClure
567 
WWUS53 KDVN 172017
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
317 PM CDT Fri Apr 17 2026

ILC085-177-172030-
/O.CON.KDVN.TO.W.0033.000000T0000Z-260417T2030Z/
Jo Daviess IL-Stephenson IL-
317 PM CDT Fri Apr 17 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR JO
DAVIESS AND WESTERN STEPHENSON COUNTIES...

At 317 PM CDT, a confirmed tornado was located over Apple River
Canyon State Park, or 16 miles south of Darlington, moving east at 25
mph.

HAZARD...Damaging tornado and golf ball size hail.

SOURCE...Law enforcement confirmed tornado between Stockton and 
         Elizabeth.

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...
  Stockton, Warren, Nora, Waddams Grove, and Jo Daviess County 
  Fairgrounds around 320 PM CDT.
  Lena and Lake Le-Aqua-na State Park around 325 PM CDT.
  Winslow around 330 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.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4219 9031 4251 9031 4250 8978 4220 8982
TIME...MOT...LOC 2017Z 268DEG 22KT 4245 9004 

TORNADO...OBSERVED
MAX HAIL SIZE...1.75 IN

$$

McClure
866 
WWUS53 KDVN 172018 CCA
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
318 PM CDT Fri Apr 17 2026

ILC085-177-172030-
/O.COR.KDVN.TO.W.0033.000000T0000Z-260417T2030Z/
Jo Daviess IL-Stephenson IL-
318 PM CDT Fri Apr 17 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR JO
DAVIESS AND WESTERN STEPHENSON COUNTIES...

At 318 PM CDT, a confirmed tornado was located near Woodbine, or 17
miles north of Mount Carroll, moving east at 25 mph.

HAZARD...Damaging tornado and golf ball size hail.

SOURCE...Law enforcement confirmed tornado between Stockton and 
         Elizabeth.

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...
  Apple River Canyon State Park around 325 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.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4219 9031 4251 9031 4250 8978 4220 8982
TIME...MOT...LOC 2017Z 264DEG 20KT 4245 9004 

TORNADO...OBSERVED
MAX HAIL SIZE...1.75 IN

$$

McClure

What forecasters said that day

The local office's own words before this tornado 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 tornado warning went out at Apr 17, 1:11 PM CDT, 1 hour 37 minutes earlier. Its key messages:

  • A strong storm system will bring the threat for severe storms once again to our area through this evening. SPC continues to highlight nearly our entire area in an Enhanced Risk (level 3 of 5) for severe weather.
  • A flood watch has been issued for much of the area through tonight for the potential of excessive rainfall with the final round of storms this afternoon/tonight. Soils across the area are saturated north of I-80 and very moist south of I-80.
  • Much cooler conditions are expected this weekend. Unseasonably cool temperatures in the 30s Saturday night and Sunday night will bring the potential for frost/freeze, especially in our north.
  • Area rivers are on the rise from the recent rounds of heavy rain, and heavy rainfall later today may push them even higher. Refer to the hydro section below for more details.
Area forecast discussion, Apr 17, 1:11 PM CDT, 1 hour 37 minutes before
Area Forecast Discussion
National Weather Service Quad Cities IA IL
111 PM CDT Fri Apr 17 2026

.KEY MESSAGES...

- A strong storm system will bring the threat for severe storms
  once again to our area through this evening. SPC continues to
  highlight nearly our entire area in an Enhanced Risk (level 3
  of 5) for severe weather.

- A flood watch has been issued for much of the area through
  tonight for the potential of excessive rainfall with the final
  round of storms this afternoon/tonight. Soils across the area
  are saturated north of I-80 and very moist south of I-80.

- Much cooler conditions are expected this weekend. Unseasonably cool
  temperatures in the 30s Saturday night and Sunday night will
  bring the potential for frost/freeze, especially in our north.

- Area rivers are on the rise from the recent rounds of heavy
  rain, and heavy rainfall later today may push them even
  higher. Refer to the hydro section below for more details.

&&

.SHORT TERM /THROUGH TONIGHT/...
Issued at 1252 PM CDT Fri Apr 17 2026

Convective initiation has occurred across eastern Iowa. The
individual discrete cells will rapidly grow upscale into one or
more broken lines ahead of the cold front.

The atmosphere is becoming increasingly moist so the storms will
have plenty of fuel to produce heavy rainfall. The axis for the
heavier rain is somewhat narrow but rainfall amounts of an inch
in an hour will be possible with the stronger storms. Where
storms linger or repeat over the same areas, rainfall amounts
of 2 to 3 inches in a short time will be possible.

The pre-frontal line(s) of storms look to push east of the
Mississippi in the 6-8 PM time frame with the cold front
arriving during the mid to late evening hours. Very short range
models which had been pointing to a solid line of storms with
the front are now trending toward a scattered to broken line
with not much thunder associated with it. This 'may' be an
indication the convective allowing models are struggling with
the overall forcing from the upper level system.

The bulk of the rain looks to end across the area by midnight
but scattered rain showers along and immediately behind the
front will linger past midnight. However, the overall trend will
be decreasing areal coverage from west to east after midnight.

&&

.LONG TERM /SATURDAY THROUGH THURSDAY/...
Issued at 306 AM CDT Fri Apr 17 2026

Much colder air will continue to move into the area for the weekend
as a northwest flow pattern develops aloft. An area of high pressure
will build into the area Saturday night, which could set up our
first bout of frost/freeze conditions during the growing season.
There does appear to be a mid-level trough sweeping through the area
Saturday night, which could result in some cloud cover that could
keep our temperatures from falling too much, limiting our
frost/freeze potential. Despite this, the NBM probabilities of
freezing temperatures Saturday night are still around 50-80% along
and north of Interstate 80. Another night of frost/freeze conditions
are possible Sunday night as well, with similar exceedance
probabilities for freezing temperatures.

A quieter weather pattern will persist into early next week as a
broad upper ridge remains in place through the central US. A larger
trough begins to take shape across the western US into the latter
portion of the week. Therefore, some warming and a move toward some
smaller precipitation chances (20-40%) start to return to the area
by Thursday with a larger storm system potentially nearing the
region for Friday.

&&

.AVIATION /18Z TAFS THROUGH 18Z SATURDAY/...
Issued at 1225 PM CDT Fri Apr 17 2026

Convective initiation has begun over eastern Iowa with surface
winds gusting to 30 knots. Very short range models indicate
rapid upscale growth of TSRA through 00z/18. Discrete TSRA cells
will grow upscale into a line that congeals along the
Mississippi River by 00z/18. Based on forecast soundings,
probability is high for wind gusts over 50 knots with the
discrete cells and as the line forms. By 06z/18 the cold front
will have swept through the area with widespread MVFR conditions
and winds gusting up to 25 knots.

&&

.HYDROLOGY...
Issued at 1136 AM CDT Thu Apr 16 2026

Discussion...

Over the past five days, multiple rounds of heavy rain have
impacted eastern Iowa, northern Illinois and southern Wisconsin.
Rainfall amounts have run from 2 to 5 inches of rain; much of
this rain has been north of Highway 30.

Another round of heavy rain is forecast this afternoon and
evening with amounts running from a half inch to around 1.5
inches. With area soils running from moist to near saturation,
this additional rainfall will quickly run off into area
waterways resulting in new or increased river flooding along
with the potential for flash flooding.

Much of this rain is forecast to fall across southeast Iowa,
west central Illinois and into northern Illinois. River basins
impacted would be the Rock, lower Iowa, Skunk, Des Moines and La
Moine.

Rock River...

Based on overall river forecasts and another round of heavy rain
expected today, confidence is high (>80%) that the entire
length of the Rock River will reach flood stage by the weekend
and remain above flood stage into much of next week.

Mississippi River...

Routed flow coming down from the upper Mississippi, Wisconsin,
Rock, Iowa and other tributary rivers will cause general rises
along the length of the Mississippi. Based on the current routed
flow and another round of heavy rain, confidence is high (>80%)
that the Mississippi will reach flood stage from Muscatine down
through Keithsburg and at Gregory Landing. Gladstone and
Burlington are already above flood stage and will see additional
rises as the additional routed flow arrives over the weekend
and into next week.

Iowa Tributary Rivers...

Rivers in eastern Iowa are running high from the rounds of heavy
rain. Flood warnings continue for the lower Wapsipinicon River
near DeWitt and the Iowa River above Coralville near Marengo.
Based on routed flow, the lower Cedar River near Conesville will
go above flood stage over the weekend.

The North Skunk River near Sigourney is forecast to go above
flood stage tonight with general rises expected farther
downstream and on the Skunk River.

&&

.DVN WATCHES/WARNINGS/ADVISORIES...
IA...Flood Watch through late tonight for IAZ040>042-052>054-
     064>068-077-078-088-089-099.
IL...Flood Watch through late tonight for ILZ001-002-007-009-
     015>018-024>026-034-035.
MO...Flood Watch through late tonight for MOZ010.

&&

SHORT TERM...08
LONG TERM...Schultz
AVIATION...08
HYDROLOGY...08
Hazardous weather outlook, Apr 17, 3:23 AM CDT, 11 hours 25 minutes before
Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
323 AM CDT Fri Apr 17 2026

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-180900-
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-
323 AM CDT Fri Apr 17 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...TODAY AND TONIGHT

An Enhanced Risk (Level 3 of 5) for severe weather remains in
place across the area for this afternoon and evening. Damaging
winds and tornadoes, some possibly strong, are the primary
threats. Localized flash flooding is also possible.

Southerly winds will gust to around 40 mph this afternoon prior to
the severe thunderstorm development.

Area rivers are experiencing flooding. Please see the latest Flood
Statements and Flood Warnings for details.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

Much colder air will bring the potential for frost and freeze
conditions to parts of the area Saturday night and Sunday night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is likely for this afternoon and evening.

JTS

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 17, 11:21 AM CDTRiver Flood WarningDVNMuscatine, Scott10 days
Apr 17, 11:21 AM CDTRiver Flood WarningDVNMuscatine21 days
Apr 17, 12:46 PM CDTFlood WatchDVNBuchanan, Cedar, Clinton, Delaware, Des Moines, Dubuque and 10 more12 hr
Apr 17, 12:47 PM CDTSevere Thunderstorm WarningDVNDelaware, Dubuque, Jones, Linn58 min
Apr 17, 12:59 PM CDTSevere Thunderstorm WarningDVNCedar, Clinton, Jackson, Johnson, Jones, Linn61 min
Apr 17, 1:10 PM CDTSevere Thunderstorm WarningDVNDelaware, Dubuque, Jackson, Jones65 min
Apr 17, 1:45 PM CDTTornado WarningDVNDubuque, Jackson45 min
Apr 17, 1:56 PM CDTSevere Thunderstorm WarningDVNClinton, Dubuque, Jackson, Jones64 min
Apr 17, 2:11 PM CDTTornado WarningDVNDubuque, Jackson49 min
Apr 17, 2:14 PM CDTTornado WarningDVNJackson46 min
Apr 17, 2:23 PM CDTFlash Flood WarningDVNDubuque, Jackson6 hr
Apr 17, 3:24 PM CDTSevere Thunderstorm WarningDVNBenton, Iowa, Johnson, Linn66 min
Apr 17, 3:25 PM CDTSevere Thunderstorm WarningDVNDubuque, Jackson35 min
Apr 17, 3:29 PM CDTSevere Thunderstorm WarningDVNBenton, Buchanan, Iowa, Johnson, Linn76 min
Apr 17, 3:47 PM CDTTornado WarningDVNBenton, Linn43 min
Apr 17, 4:00 PM CDTSevere Thunderstorm WarningDVNBuchanan, Delaware, Dubuque60 min
Apr 17, 4:13 PM CDTSevere Thunderstorm WarningDVNHenry, Jefferson, Keokuk, Van Buren, Washington77 min
Apr 17, 4:18 PM CDTTornado WarningDVNBuchanan, Delaware, Jones, Linn42 min
Apr 17, 4:22 PM CDTTornado WarningDVNJones, Linn38 min
Apr 17, 4:23 PM CDTSevere Thunderstorm WarningDVNDes Moines, Lee, Van Buren54 min
Apr 17, 4:27 PM CDTTornado WarningDVNJefferson, Van Buren48 min
Apr 17, 4:36 PM CDTTornado WarningDVNHenry, Jefferson, Keokuk, Washington54 min
Apr 17, 4:48 PM CDTSevere Thunderstorm Warning Considerable damage threatDVNDubuque, Jackson, Jones57 min
Apr 17, 4:53 PM CDTSevere Thunderstorm WarningDVNDelaware, Dubuque52 min
Apr 17, 4:54 PM CDTTornado WarningDVNDelaware, Dubuque, Jackson66 min
Apr 17, 4:58 PM CDTTornado WarningDVNDubuque, Jackson, Jones62 min
Apr 17, 5:08 PM CDTTornado WarningDVNCedar, Johnson, Louisa, Muscatine, Washington52 min
Apr 17, 5:12 PM CDTSevere Thunderstorm Warning Destructive damage threatDVNCedar, Johnson, Louisa, Muscatine, Washington63 min
Apr 17, 5:19 PM CDTSevere Thunderstorm WarningDVNLee41 min
Apr 17, 5:26 PM CDTSevere Thunderstorm WarningDVNCedar, Dubuque, Jones, Linn31 min
Apr 17, 5:27 PM CDTSevere Thunderstorm Warning Considerable damage threatDVNDes Moines, Henry, Jefferson, Lee, Louisa, Van Buren and 1 more63 min
Apr 17, 5:30 PM CDTSevere Thunderstorm Warning Considerable damage threatDVNJackson75 min
Apr 17, 5:43 PM CDTTornado WarningDVNCedar, Clinton, Scott62 min
Apr 17, 5:46 PM CDTTornado WarningDVNDes Moines, Henry, Louisa24 min
Apr 17, 5:47 PM CDTTornado WarningDVNLee43 min
Apr 17, 5:51 PM CDTSevere Thunderstorm Warning Considerable damage threatDVNClinton, Muscatine, Scott54 min
Apr 17, 5:55 PM CDTSevere Thunderstorm Warning Considerable damage threatDVNLee50 min
Apr 17, 6:06 PM CDTSevere Thunderstorm Warning Destructive damage threatDVNClinton, Muscatine, Scott42 min
Apr 17, 6:31 PM CDTSevere Thunderstorm Warning Considerable damage threatDVNLee59 min
Apr 17, 6:37 PM CDTSevere Thunderstorm Warning Considerable damage threatDVNClinton68 min
Apr 17, 10:15 AM CDTRiver Flood WarningDVNStephenson6 days
Apr 17, 3:27 PM CDTTornado WarningDVNCarroll, Jo Daviess, Stephenson48 min
Apr 17, 4:09 PM CDTTornado WarningDVNStephenson39 min
Apr 17, 5:02 PM CDTSevere Thunderstorm WarningDVNStephenson8 min
Apr 17, 6:00 PM CDTSevere Thunderstorm Warning Considerable damage threatDVNHancock, Henderson, McDonough, Mercer, Rock Island, Warren60 min
Apr 17, 6:14 PM CDTSevere Thunderstorm Warning Considerable damage threatDVNBureau, Henry76 min
Apr 17, 6:25 PM CDTTornado WarningDVNHancock65 min
Apr 17, 6:42 PM CDTSevere Thunderstorm WarningDVNCarroll, Stephenson29 min
Apr 17, 6:43 PM CDTSevere Thunderstorm Warning Considerable damage threatDVNBureau, Henry, Mercer, Rock Island62 min
Apr 17, 6:57 PM CDTSevere Thunderstorm Warning Considerable damage threatDVNHancock, Henderson, McDonough, Warren63 min

Nearby

Tornado Warnings in Illinois, 2026Tornado Warnings in Iowa, 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.