Tornado Warning 71, NWS Quad Cities, IA

311 
WWUS53 KDVN 010004
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
704 PM CDT Fri Jul 31 2026

IAC113-010045-
/O.CON.KDVN.TO.W.0071.000000T0000Z-260801T0045Z/
Linn IA-
704 PM CDT Fri Jul 31 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR
SOUTHEASTERN LINN COUNTY...

At 703 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Mount Vernon, or 10 miles east of Cedar Rapids,
moving northeast at 10 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 tornadic thunderstorm will remain over mainly rural areas of
southeastern Linn County.

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 4194 9147 4198 9151 4201 9141 4196 9137
TIME...MOT...LOC 0003Z 246DEG 9KT 4197 9147 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

DC

437 
WWUS53 KDVN 010008
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
708 PM CDT Fri Jul 31 2026

IAC113-010018-
/O.CAN.KDVN.TO.W.0071.000000T0000Z-260801T0045Z/
Linn IA-
708 PM CDT Fri Jul 31 2026

...THE TORNADO WARNING FOR SOUTHEASTERN LINN COUNTY IS CANCELLED...

The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.

&&

LAT...LON 4194 9147 4198 9151 4201 9141 4196 9137
TIME...MOT...LOC 0006Z 248DEG 9KT 4198 9145 

$$

DC

Area Forecast Discussion
National Weather Service Quad Cities IA IL
219 PM CDT Fri Jul 31 2026

.KEY MESSAGES...

- Storm system passing through today/tonight will bring
  scattered storms this afternoon/evening. Strong to severe
  storms will be possible, with a brief tornado or severe wind
  gust being the main hazards.

- Gusty winds will move in behind the passing system, bringing
  northeast winds of 20-30 mph late tonight through Saturday.
  Some higher gusts will be possible.

- Below normal temperatures will be seen through the weekend and
  into the start of the next work week, with mostly dry
  conditions anticipated.

&&

.SHORT TERM /THROUGH SATURDAY NIGHT/...
Issued at 156 PM CDT Fri Jul 31 2026

Storm system passing through the area today will bring another round
of scattered showers/storms this afternoon and evening. Ahead of
this round, satellite observations indicate a dry slot working
through the area. This dry slot has plenty of gaps in the cloud
cover, which will allow for surface heating and further
destabilization, especially for areas along and south of Interstate
80. Latest trends in SPC Mesoanalysis indicate increasing
instability in these areas, especially in the low levels, with shear
also gradually increasing. There will be just enough shear (25-35
KTs in the deep layer) in the environment to support some organized
storms. Storm mode will largely be mixed-mode, with some semi
discrete cells. If any cells become supercellular, there will be a
low-end severe threat. This threat is conditional on surface
heating, especially with shear being marginal. As such, the SPC
continues to hold much of our area in a Marginal Risk (level 1/5)
for severe storms, with a Slight Risk (level 2/5) in our far south.
When looking at hazard potential in strong/severe storms, brief
tornadoes and severe wind gusts remain the primary threats. The
threat for tornadoes will largely be south of Interstate 80,
where the best shear/instability is found, especially in the low
levels.

Not only will we have the threat for some strong to severe storms,
but these storms will also bring heavy rainfall to the area.
Guidance favors PWATs between 2.00-2.50", which is near daily max
when compared to our sounding climatology. For reference, our
18z sounding shows a 2.20" PWAT. Thus, anomalously high moisture
is in place and wouldn't be shocked if some areas see another
1.00-2.00" of rain with the additional showers/storms this
afternoon through tonight. Localized areas may see higher totals
than that given range, especially if repeated rounds of
showers/storms are seen, but much uncertainty exists. While
anywhere in our area can see repeated rounds of storms through
this evening/tonight, short term guidance has been favoring more
coverage of this potential along/north of Interstate 80. Given
recently dry conditions and the state of the crops, much of this
rainfall should easily infiltrate into the ground, limiting
flash flood concerns. Although, areas that saw heavy rainfall
this morning, largely in urban areas, will have a low-end flash
flood threat as well. Heavy rainfall rates will also lead to
concerns in urban areas. WPC has highlighted our area with a
Slight Risk (level 2/4) for Excessive Rainfall and Flash
Flooding.

Saturday, we will continue to see scattered showers decreasing from
west to east through the area. Much of the area should be dry by
noon, remaining as such for the remainder of the day. Temperatures
will be below seasonal norms, sitting in the mid-upper 70s. We will
be mostly cloudy through the day, with clouds starting to decrease
through the afternoon and evening. Gusty northeasterly winds will
result through Saturday, owing to the strong pressure gradient
overhead. Early Saturday morning, we will see winds increase
throughout. Sustained winds of 15-25 mph can be expected through the
day, with gusts upwards to 30 mph or higher. After sunset, we will
see these winds decrease.

&&

.LONG TERM /SUNDAY THROUGH THURSDAY/...
Issued at 156 PM CDT Fri Jul 31 2026

The upper-level trough that will help bring precipitation across the
area today into Saturday will finally depart the region to the
east Sunday, leading to a period of dry conditions. Surface
high pressure building across the area, along with upper-level
ridging over the Intermountain West region protruding from a
large upper-level high over the southwestern CONUS, will support
more quiescent conditions through Tuesday, with near-seasonal
temperatures (highs in the lower 80s) for Sunday through
Tuesday.

In terms of active weather, it appears mainly Wednesday/Thursday
will be the time to watch as the upper-level ridging breaks down,
allowing a mid-level trough to approach the region. An attendant
surface cold front is also progged to accompany the trough, although
there are significant timing differences among the global models of
the front, and thus, timing of precipitation with that boundary.
Severe weather potential with this front appears to be pretty low at
this time, given modest values of instability and shear (25-35 knots
for 0-6 km shear magnitudes). The various machine learning severe
weather probability guidance supports the more limited severe
weather signal.

Schultz

&&

.AVIATION /18Z TAFS THROUGH 18Z SATURDAY/...
Issued at 1212 PM CDT Fri Jul 31 2026

A messy aviation forecast is ahead of us, as we have a slow-
moving storm system pass through the area over the next 24
hours. We currently are watching the shield of widespread
rainfall move out of the area, which has brought IFR vis/cigs to
much of the area this morning. For the remainder of the
afternoon, a broken-overcast deck will remain, with cigs around
1000-2000 ft. Isolated-scattered showers will pass through the
area between 18-21z, with increasing chances and coverage of
thunderstorms after 21z. With any shower/storm, lower cigs and
vis can be expected. We can see cigs drop to as low as 500 ft or
lower, especially at CID/DBQ after 00z this evening, with vis
between 2-5 SM. At MLI/BRL, cigs may drop as low as 500-1000 ft
in thunderstorms with vis of 3-5 SM. These conditions will
continue well into the night and through Saturday morning, with
flight conditions not improving for many until at least 18z
Saturday. Frequent lightning and gusty winds can be expected at
terminals with any thunderstorm, with heavy rainfall possibly
dropping vis lower than currently advertised.

With the surface low tracking overhead through the TAF period,
winds will be quite variable, especially between 00-12z. Ahead
of the surface low, winds will largely be out of the
south/southeast, becoming northeasterly on the backside around
08z and beyond. Wind speeds will increase quite a bit on the
backside of the system, with gusts upwards to 25-30 KTs out of
the northeast by 12z Saturday for most of the area. Largely
light (5-10 KTs) and variable winds can be expected under the
surface low.

&&

.DVN WATCHES/WARNINGS/ADVISORIES...
IA...None.
IL...None.
MO...None.

&&

SHORT TERM...Gunkel
LONG TERM...Schultz
AVIATION...Gunkel

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
326 AM CDT Fri Jul 31 2026

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-010830-
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-
326 AM CDT Fri Jul 31 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

Widespread showers and thunderstorms are expected this morning
through tonight. Rainfall accumulations of 1-3 inches are likely.
Heavy rainfall could lead to localized flooding and rises on
tributary rivers.

Strong to severe thunderstorms are possible this afternoon and
evening with primary threats of localized damaging winds and
isolated tornadoes. There is a Slight, level 2 out of 5, risk for
severe storms in far northeast Missouri and west-central
Illinois. A Marginal, level 1 of 5, risk for severe storms is in
effect for areas south of Highway 20.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

Isolated thunderstorms are expected Saturday morning and
afternoon. Additional rainfall accumulations up to 0.5 inches are
likely.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this afternoon and evening.

Preliminary Local Storm Report
National Weather Service Quad Cities IA IL
509 PM CDT Fri Jul 31 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0508 PM     Rain             2 ESE Fairview          42.08N 91.30W
07/31/2026  M3.97 Inch       Jones              IA   CO-OP Observer

            An additional 3.84 since the observation
            this morning.

&&

Preliminary Local Storm Report
National Weather Service Quad Cities IA IL
519 PM CDT Fri Jul 31 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0519 PM     Rain             1 SW Perlee             41.07N 91.92W
07/31/2026  M1.90 Inch       Jefferson          IA   Trained Spotter

            Storm total.

&&

GROSS

Preliminary Local Storm Report
National Weather Service Quad Cities IA IL
520 PM CDT Fri Jul 31 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0505 PM     Rain             2 W Fulton              41.86N 90.19W
07/31/2026  M2.26 Inch       Clinton            IA   Trained Spotter

            Rainfall past 24hrs.

&&

GROSS

Special Weather Statement
National Weather Service Quad Cities IA/IL
533 PM CDT Fri Jul 31 2026

IAZ064-065-067-077-078-088-089-ILZ015-024-025-312330-
Mercer IL-Henderson IL-Rock Island IL-Henry IA-Des Moines IA-
Washington IA-Muscatine IA-Cedar IA-Louisa IA-Johnson IA-
533 PM CDT Fri Jul 31 2026

...Heavy rain producing thunderstorms will impact portions of
western Mercer, northeastern Henderson, southwestern Rock Island,
eastern Henry, northern Des Moines, northeastern Washington,
Muscatine, southeastern Cedar, Louisa and southeastern Johnson
Counties through 630 PM CDT...

At 532 PM CDT, Doppler radar was tracking heavy rain producing
thunderstorms along a line extending from West Liberty to near
Danville. Movement was northeast at 25 mph.

HAZARD...Minor flooding.

SOURCE...Radar indicated.

IMPACT...Slowing or redirecting of traffic due to ponding or flowing
         water. Closure of waterfront access due to flooding.

Locations impacted include...
Muscatine, Wapello, Columbus Junction, West Liberty, Wilton, New
London, Mediapolis, Lone Tree, Winfield, Fruitland, Morning Sun, New
Boston, Keithsburg, Grandview, Conesville, Eliza, Joy, Bennett,
Columbus City, and Letts.

This includes Interstate 80 in Iowa between mile markers 261 and 276.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is occurring and may lead to localized flooding.
Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4183 9099 4106 9079 4084 9145 4148 9149
TIME...MOT...LOC 2232Z 219DEG 22KT 4157 9126 4093 9130

MAX HAIL SIZE...<0.75 IN
MAX WIND GUST...<40 MPH

McClure

Preliminary Local Storm Report
National Weather Service Quad Cities IA IL
544 PM CDT Fri Jul 31 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0544 PM     Rain             3 N Stockton            42.40N 90.00W
07/31/2026  M1.22 Inch       Jo Daviess         IL   CO-OP Observer

            So far.

&&

Special Weather Statement
National Weather Service Quad Cities IA/IL
631 PM CDT Fri Jul 31 2026

IAZ065>068-078-089-ILZ015-024>026-010030-
Warren IL-Mercer IL-Henderson IL-Rock Island IL-Scott IA-Clinton IA-
Des Moines IA-Muscatine IA-Cedar IA-Louisa IA-
631 PM CDT Fri Jul 31 2026

...Heavy rain producing thunderstorms will impact portions of
northern Warren, Mercer, northeastern Henderson, Rock Island, Scott,
western Clinton, northeastern Des Moines, Muscatine, southeastern
Cedar and southeastern Louisa Counties through 730 PM CDT...

At 630 PM CDT, Doppler radar was tracking heavy rain producing
thunderstorms along a line extending from near Bennett to near
Rozetta. Movement was northeast at 30 mph.

HAZARD...Minor flooding.

SOURCE...Radar indicated.

IMPACT...Slowing or redirecting of traffic due to ponding or flowing
         water. Closure of waterfront access due to flooding.

Locations impacted include...
Davenport, Moline, Rock Island, Bettendorf, Muscatine, East Moline,
Monmouth, Aledo, Durant, Oquawka, Eldridge, DeWitt, Milan, Coal
Valley, Wilton, Burgess, Walcott, Blue Grass, Buffalo, and Andalusia.

This includes the following highways...
 Interstate 74 in Iowa between mile markers 1 and 5.
 Interstate 80 in Iowa between mile markers 262 and 302.
 Interstate 74 in Illinois between mile markers 1 and 7.
 Interstate 280 between mile markers 1 and 18.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is occurring and may lead to localized flooding.
Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4170 9123 4200 9044 4091 9044 4085 9107
TIME...MOT...LOC 2330Z 220DEG 27KT 4171 9088 4099 9087

MAX HAIL SIZE...<0.75 IN
MAX WIND GUST...<40 MPH

McClure