Alert archive / Iowa / Tornado Warnings in 2026

Tornado Warning 75, NWS Quad Cities, IA

August 7, 2026Buchanan County, Linn County, Iowa

NWS Quad Cities, IA issued this tornado warning at Aug 7, 2026, 5:10 PM CDT for Buchanan County, Linn County, Iowa. It was in force for 35 min. 1 report 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: Aug 7, 2026, 5:10 PM CDT (22:10 UTC)
Expired: Aug 7, 2026, 5:45 PM CDT
In force: 35 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Buchanan County, IA, Linn County, IA

The radar

The Quad Cities radar (KDVN), 105 km from the middle of the area, began a volume at 22:12 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
Aug 7, 5:17 PM CDT	TSTM WND DMG	Central City, IA	Large trees down in Central City and 1 mile east of Central City.

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.

Issued	Product	Office	Lasted
Aug 7, 1:40 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.2 hours before the alert went out and 337 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 397 J/kg
Mixed-layer CIN: -149 J/kg
Mixed-layer LCL: 953 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 57 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

596 
WFUS53 KDVN 072210
TORDVN
IAC019-113-072245-
/O.NEW.KDVN.TO.W.0075.260807T2210Z-260807T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Quad Cities IA/IL
510 PM CDT Fri Aug 7 2026

The National Weather Service in the Quad Cities has issued a

* Tornado Warning for...
  South central Buchanan County in northeastern Iowa...
  Northern Linn County in east central Iowa...

* Until 545 PM CDT.

* At 510 PM CDT, severe thunderstorms capable of producing both
  tornadoes and extensive straight line wind damage were located over
  Walker, or 15 miles southeast of Independence, moving southeast at
  55 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.

* These dangerous storms will be near...
  Center Point, Central City, Alburnett, Paris, Troy Mills, 
  Lafayette, Pinicon Ridge Park, and Linn  County Fairgrounds around 
  515 PM CDT.
  Marion and Waubeek around 520 PM CDT.
  Whittier and Matsell Bridge Natural Area around 525 PM CDT.

This includes Interstate 380 between mile markers 31 and 39.
 
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.

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

&&

LAT...LON 4212 9136 4211 9136 4207 9165 4220 9183
      4230 9183 4234 9175
TIME...MOT...LOC 2210Z 300DEG 46KT 4227 9176 

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

$$

Gibbs

1 follow-up statement

665 
WWUS53 KDVN 072223
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
523 PM CDT Fri Aug 7 2026

IAC019-072232-
/O.CAN.KDVN.TO.W.0075.000000T0000Z-260807T2245Z/
Buchanan IA-
523 PM CDT Fri Aug 7 2026

...THE TORNADO WARNING FOR SOUTH CENTRAL BUCHANAN COUNTY IS
CANCELLED...

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

A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
east central Iowa.

&&

LAT...LON 4212 9136 4211 9136 4207 9165 4213 9173
      4220 9170 4225 9159
TIME...MOT...LOC 2222Z 300DEG 46KT 4219 9157 

$$

IAC113-072245-
/O.CON.KDVN.TO.W.0075.000000T0000Z-260807T2245Z/
Linn IA-
523 PM CDT Fri Aug 7 2026

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR
NORTHEASTERN LINN COUNTY...

At 522 PM CDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located over
Linn  County Fairgrounds, or 15 miles west of Anamosa, moving
southeast at 55 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.

These dangerous storms will be near...
  Whittier, Waubeek, and Matsell Bridge Natural Area around 530 PM 
  CDT.

This includes Interstate 380 between mile markers 31 and 32.
 
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.

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

&&

LAT...LON 4212 9136 4211 9136 4207 9165 4213 9173
      4220 9170 4225 9159
TIME...MOT...LOC 2222Z 300DEG 46KT 4219 9157 

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

$$

Gibbs

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 Aug 7, 2:27 PM CDT, 2 hours 43 minutes earlier. Its key messages:

A cold front will bring scattered showers and thunderstorms (30-50% coverage) to the area late this afternoon into the evening hours. A few of these storms could be severe with the primary hazards being gusty winds and locally heavy downpours.
An active pattern keeps rain chances on the table through the middle of next week with plenty of dry hours in between, but muggy to oppressive humidity returns.

Area forecast discussion, Aug 7, 2:27 PM CDT, 2 hours 43 minutes before

Area Forecast Discussion
National Weather Service Quad Cities IA IL
227 PM CDT Fri Aug 7 2026

.KEY MESSAGES...

- A cold front will bring scattered showers and thunderstorms
  (30-50% coverage) to the area late this afternoon into the
  evening hours. A few of these storms could be severe with the
  primary hazards being gusty winds and locally heavy
  downpours.

- An active pattern keeps rain chances on the table through the
  middle of next week with plenty of dry hours in between, but
  muggy to oppressive humidity returns.

&&

.SHORT TERM /THROUGH SATURDAY NIGHT/...
Issued at 158 PM CDT Fri Aug 7 2026

A line of thunderstorms continues to develop across central
Iowa early this afternoon. This line of storms is forecast to
move south southeastward along a CAPE gradient across central
and eastern Iowa this afternoon into this evening. There is a
severe thunderstorm watch in effect through 10 PM for area along
and west of a line from Manchester to Tipton to Wapello. Damaging
winds and heavy rain are the main threats. Storms are forecast
to exit the area prior to 6 UTC.

Later tonight, patchy fog is possible overnight as winds
becoming light with low abundant level moisture across the
area. Low temperatures are expected to be in the 60s. A cold
front is forecast to move across the area tonight and turn winds
to the west.

Winds are forecast to turn the south on Saturday with increasing
moisture during the afternoon and evening hours. High
temperatures on Saturday will be in the 80s across the area.

Another shortwave is forecast to move across the area Saturday
and bring chances of showers and thunderstorms to the area
mainly after midnight. Severe thunderstorms are possible
overnight. There is a Marginal (level 1 out of 5) Risk of
severe thunderstorms Saturday along and west of the Mississippi
River.

&&

.LONG TERM /SUNDAY THROUGH THURSDAY/...
Issued at 116 AM CDT Fri Aug 7 2026

Sunday-Monday...As the two shortwaves quickly move to the
southeast, the deformation zone remain in place Sunday, but
PoPs should decrease to 30-50% with the lack of upper-level
dynamical support. The low pressure over the Central Plains is
also expected to stall out which will be an issue heading into
Sunday night as another subtle shortwave zooms across Wyoming
into South Dakota and Nebraska. A second LLJ is likely to
develop, spawning another round of showers and storms Sunday
night into Monday. This shortwave trough will also reinvigorate
the deformation zone and pull it northward. The increased
southwesterly flow, low-level WAA, and moisture advection could
lead to excessive heat developing, especially in our south where
clearing skies are more likely. Current LREF guidance has a
20-30% chance of heat indices exceeding 100 degrees south of
Interstate 80 Monday afternoon. Regardless though, dew points
are going to be in the 70s, possibly in the mid-to-upper 70s
(40-60% chance per 06.12z LREF guidance), making it feel muggy
to oppressive outside even with potential cloud cover.

Tuesday-Thursday...Multiple shortwaves passages will keep
precipitation chances around through the middle of next week, but
these repeated passages should slowly push the deformation zone
further south as high pressure eventually settles back in over
the region. There is general consensus among the ensembles that
a return to north-to-northeasterly flow in the low-levels
should erode away at the high dew points and temperatures,
returning to the area to seasonable conditions by the end of
next week.

&&

.AVIATION /18Z TAFS THROUGH 18Z SATURDAY/...
Issued at 1240 PM CDT Fri Aug 7 2026

In the wake of fog this morning, periods of MVFR ceilings
continue across the area at all TAF sites. A storm system is
forecast to move across the area later this afternoon into this
evening with low confidence in the exact timing and locations.
Used 3 to 4 hour prob30 window at each TAF site to account for
the timing of these storms. If storms do occur than MVFR
ceilings are possible in storms with periods of IFR to LIFR
visibilities in the strongest storms. Conditions are expected to
improve to VFR behind the storm but fog is possible tonight
with MVFR to IFR visibilities possible after 06 UTC with
conditions improving by 14 UTC Saturday. Southerly winds today
will shift to the northwest behind the front from west to east.

&&

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

&&

SHORT TERM...Cousins
LONG TERM...Delaune
AVIATION...Cousins

Hazardous weather outlook, Aug 7, 6:00 AM CDT, 11 hours 10 minutes before

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
600 AM CDT Fri Aug 7 2026

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-081100-
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-
600 AM CDT Fri Aug 7 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

Dense fog will reduce visibility to a quarter mile or less at
times across portions of eastern Iowa and northeast Missouri
through the early morning commute.

Scattered thunderstorms (30% to 50% chance) are possible late
this afternoon into the overnight, mainly west of the
Mississippi River. Isolated severe storms with hail and
strong winds is possible along with locally heavy rain.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

Another round of scattered showers and thunderstorms are possible
Saturday night and Sunday. A few of these storms could turn
severe with gusty winds, hail and heavy downpours.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed late this afternoon and evening.

In the hours before

Local storm report, Aug 7, 4:28 PM CDT, 42 minutes before

Preliminary Local Storm Report
National Weather Service Quad Cities IA IL
428 PM CDT Fri Aug 7 2026

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

0415 PM     Tstm Wnd Dmg     Fairbank                42.64N 92.05W
08/07/2026                   Buchanan           IA   Emergency Mngr

            Multiple utility poles down in Fairbank.
            Possible tornado. Time estimated from radar.

&&

ALE

Local storm report, Aug 7, 4:30 PM CDT, 40 minutes before

Preliminary Local Storm Report
National Weather Service Quad Cities IA IL
430 PM CDT Fri Aug 7 2026

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

0415 PM     Hail             Fairbank                42.64N 92.05W
08/07/2026  M1.75 Inch       Buchanan           IA   Emergency Mngr

            Time estimated from radar.

&&

ALE

Local storm report, Aug 7, 4:34 PM CDT, 36 minutes before

Preliminary Local Storm Report
National Weather Service Quad Cities IA IL
434 PM CDT Fri Aug 7 2026

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

0418 PM     Tstm Wnd Gst     Fairbank                42.64N 92.05W
08/07/2026  M58 MPH          Buchanan           IA   Public

            PWS.

&&

Local storm report, Aug 7, 4:45 PM CDT, 25 minutes before

Preliminary Local Storm Report
National Weather Service Quad Cities IA IL
445 PM CDT Fri Aug 7 2026

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

0437 PM     Tstm Wnd Gst     2 SSW Three Elms County 42.42N 91.88W
08/07/2026  M55 MPH          Buchanan           IA   Public

            PWS.

&&

Local storm report, Aug 7, 4:55 PM CDT, 15 minutes before

Preliminary Local Storm Report
National Weather Service Quad Cities IA IL
455 PM CDT Fri Aug 7 2026

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

0430 PM     Tstm Wnd Dmg     1 W Three Elms County   42.45N 91.88W
08/07/2026                   Buchanan           IA   Trained Spotter

            Road sign torn out of the ground and blown
            onto the shoulder of the road. Time
            estimated from radar.

&&

ALE

Local storm report, Aug 7, 5:07 PM CDT, 3 minutes before

Preliminary Local Storm Report
National Weather Service Quad Cities IA IL
507 PM CDT Fri Aug 7 2026

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

0503 PM     Tstm Wnd Gst     Ryan                    42.35N 91.48W
08/07/2026  E60 MPH          Delaware           IA   Fire Dept/Rescue

&&

ALE

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 2:53 AM CDT	Dense Fog Advisory	DVN	Benton, Buchanan, Cedar, Delaware, Dubuque, Iowa and 7 more	6 hr
Aug 7, 3:49 PM CDT	Severe Thunderstorm Warning	DVN	Buchanan	56 min
Aug 7, 3:59 PM CDT	Tornado Warning Tornado observed	DVN	Buchanan	31 min
Aug 7, 4:20 PM CDT	Tornado Warning	DVN	Buchanan	40 min
Aug 7, 4:38 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Buchanan	37 min
Aug 7, 4:48 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Buchanan, Delaware, Jones, Linn	57 min
Aug 7, 5:02 PM CDT	Tornado Warning	DVN	Delaware, Jones, Linn	43 min
Aug 7, 5:03 PM CDT	Severe Thunderstorm Warning	DVN	Buchanan	27 min
Aug 7, 5:18 PM CDT	Tornado Warning	DVN	Cedar, Jones, Linn	57 min
Aug 7, 5:26 PM CDT	Severe Thunderstorm Warning	DVN	Benton, Iowa, Johnson, Linn	36 min
Aug 7, 5:57 PM CDT	Severe Thunderstorm Warning	DVN	Cedar, Clinton	33 min
Aug 7, 6:30 PM CDT	Special Weather Statement	DVN	Scott	45 min
Aug 7, 6:39 PM CDT	Severe Thunderstorm Warning	DVN	Iowa	38 min

Nearby

Tornado Warnings in Iowa, 2026 Every tornado warning in 2026 Tornadoes 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.