Tornado Warning 30, NWS Quad Cities, IA

011 
WWUS53 KDVN 171849
SVSDVN

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

IAC061-097-171930-
/O.CON.KDVN.TO.W.0030.000000T0000Z-260417T1930Z/
Jackson IA-Dubuque IA-
149 PM CDT Fri Apr 17 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM CDT FOR
NORTHWESTERN JACKSON AND SOUTHEASTERN DUBUQUE COUNTIES...

At 149 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Bernard, or 15 miles southwest of Dubuque, moving
east at 25 mph.

HAZARD...Tornado and golf ball size hail.

SOURCE...Weather spotters reported a tightening wall cloud near 
         Bernard.

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...
  La Motte, Zwingle, Dubuque Regional Airport, Washington Mills, and 
  Swiss Valley Park around 155 PM CDT.
  Dubuque and St. Donatus around 205 PM CDT.

Other locations in the path of this tornadic thunderstorm include
Massey and Key West.

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 4247 9064 4243 9056 4225 9048 4226 9090
      4229 9090 4230 9093 4242 9098 4249 9066
TIME...MOT...LOC 1849Z 256DEG 21KT 4231 9084 

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

$$

McClure

342 
WWUS53 KDVN 171854
SVSDVN

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

IAC061-097-171930-
/O.CON.KDVN.TO.W.0030.000000T0000Z-260417T1930Z/
Jackson IA-Dubuque IA-
154 PM CDT Fri Apr 17 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM CDT FOR
NORTHWESTERN JACKSON AND SOUTHEASTERN DUBUQUE COUNTIES...

At 154 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Washington Mills, or 12 miles south of Dubuque,
moving east at 25 mph.

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...
  Dubuque, La Motte, Zwingle, Key West, Dubuque Regional Airport, 
  and Swiss Valley Park around 200 PM CDT.
  St. Donatus, Massey, Rockdale, and Mines of Spain around 205 PM 
  CDT.

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.

Motorists should not take shelter under highway overpasses. If you
cannot safely drive away from the tornado, as a last resort, either
park your vehicle and stay put, or abandon your vehicle and lie down
in a low lying area and protect yourself from flying debris.

&&

LAT...LON 4247 9064 4243 9056 4225 9048 4226 9090
      4243 9090 4249 9066
TIME...MOT...LOC 1854Z 252DEG 23KT 4233 9078 

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

$$

McClure

545 
WWUS53 KDVN 171856
SVSDVN

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

IAC061-097-171930-
/O.CON.KDVN.TO.W.0030.000000T0000Z-260417T1930Z/
Jackson IA-Dubuque IA-
156 PM CDT Fri Apr 17 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM CDT FOR
NORTHWESTERN JACKSON AND SOUTHEASTERN DUBUQUE COUNTIES...

At 156 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Washington Mills, or 11 miles south of Dubuque,
moving east at 25 mph.

HAZARD...Tornado and golf ball size hail.

SOURCE...Weather spotters reported a funnel cloud near Bernard.

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...
  Dubuque, La Motte, Zwingle, Key West, Dubuque Regional Airport, 
  and Swiss Valley Park around 200 PM CDT.
  St. Donatus, Massey, and Mines of Spain around 205 PM CDT.
  Rockdale around 210 PM CDT.

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.

Motorists should not take shelter under highway overpasses. If you
cannot safely drive away from the tornado, as a last resort, either
park your vehicle and stay put, or abandon your vehicle and lie down
in a low lying area and protect yourself from flying debris.

&&

LAT...LON 4247 9064 4243 9056 4225 9048 4226 9090
      4243 9090 4249 9066
TIME...MOT...LOC 1856Z 256DEG 21KT 4233 9076 

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

$$

McClure

062 
WWUS53 KDVN 171905 RRA
SVSDVN

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

IAC061-097-171930-
/O.CON.KDVN.TO.W.0030.000000T0000Z-260417T1930Z/
Jackson IA-Dubuque IA-
205 PM CDT Fri Apr 17 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM CDT FOR
NORTHWESTERN JACKSON AND SOUTHEASTERN DUBUQUE COUNTIES...

At 205 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Zwingle, or 10 miles south of Dubuque, moving east
at 25 mph.

HAZARD...Tornado and ping pong 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...
  Dubuque, St. Donatus, Massey, Key West, and Mines of Spain around 
  210 PM CDT.

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.

Motorists should not take shelter under highway overpasses. If you
cannot safely drive away from the tornado, as a last resort, either
park your vehicle and stay put, or abandon your vehicle and lie down
in a low lying area and protect yourself from flying debris.

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

&&

LAT...LON 4247 9064 4243 9056 4231 9051 4229 9080
      4245 9081 4249 9066
TIME...MOT...LOC 1905Z 256DEG 21KT 4234 9069 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.50 IN

$$

McClure

762 
WWUS53 KDVN 171909
SVSDVN

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

IAC061-097-171930-
/O.CON.KDVN.TO.W.0030.000000T0000Z-260417T1930Z/
Jackson IA-Dubuque IA-
209 PM CDT Fri Apr 17 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM CDT FOR
NORTHWESTERN JACKSON AND SOUTHEASTERN DUBUQUE COUNTIES...

At 209 PM CDT, a severe thunderstorm capable of producing a tornado
was located near La Motte, or 11 miles south of Dubuque, moving east
at 25 mph.

HAZARD...Tornado and ping pong 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...
  St. Donatus and Massey around 215 PM CDT.

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.

Motorists should not take shelter under highway overpasses. If you
cannot safely drive away from the tornado, as a last resort, either
park your vehicle and stay put, or abandon your vehicle and lie down
in a low lying area and protect yourself from flying debris.

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

&&

LAT...LON 4247 9064 4243 9056 4231 9051 4229 9075
      4243 9075 4249 9066
TIME...MOT...LOC 1909Z 257DEG 23KT 4235 9063 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.50 IN

$$

McClure

497 
WWUS53 KDVN 171917
SVSDVN

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

IAC061-097-171930-
/O.CON.KDVN.TO.W.0030.000000T0000Z-260417T1930Z/
Jackson IA-Dubuque IA-
217 PM CDT Fri Apr 17 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM CDT FOR NORTH
CENTRAL JACKSON AND EAST CENTRAL DUBUQUE COUNTIES...

At 217 PM CDT, a severe thunderstorm capable of producing a tornado
was located over St. Donatus, or 8 miles southwest of Galena, moving
east at 25 mph.

HAZARD...Tornado and ping pong 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 tornadic thunderstorm will remain over mainly rural areas of
north central Jackson and east central Dubuque Counties.

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.

Motorists should not take shelter under highway overpasses. If you
cannot safely drive away from the tornado, as a last resort, either
park your vehicle and stay put, or abandon your vehicle and lie down
in a low lying area and protect yourself from flying debris.

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

&&

LAT...LON 4243 9060 4243 9056 4231 9051 4230 9066
      4240 9065 4244 9064
TIME...MOT...LOC 1917Z 256DEG 21KT 4236 9056 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.50 IN

$$

McClure

318 
WWUS53 KDVN 171923
SVSDVN

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

IAC061-097-171932-
/O.EXP.KDVN.TO.W.0030.000000T0000Z-260417T1930Z/
Jackson IA-Dubuque IA-
223 PM CDT Fri Apr 17 2026

...THE TORNADO WARNING FOR NORTH CENTRAL JACKSON AND EAST CENTRAL
DUBUQUE COUNTIES WILL EXPIRE AT 230 PM CDT...

The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
A tornado warning remains in effect for northern Jackson and 
Jo Daviess counties. 

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

&&

LAT...LON 4243 9060 4243 9056 4231 9051 4230 9066
      4240 9065 4244 9064
TIME...MOT...LOC 1922Z 256DEG 21KT 4237 9053 

$$

McClure

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
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