Alert archive / Iowa / Tornado Warnings in 2026
Tornado Warning 74, NWS Quad Cities, IA
NWS Quad Cities, IA issued this tornado warning at Aug 7, 2026, 5:02 PM CDT for Delaware County, Jones County, Linn County, Iowa. It was in force for 43 min. 10 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
- Aug 7, 2026, 5:02 PM CDT (22:02 UTC)
- Expired
- Aug 7, 2026, 5:45 PM CDT
- In force
- 43 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Delaware County, IA, Jones County, IA, Linn County, IA
The radar
The Quad Cities radar (KDVN), 98 km from the middle of the area, began a volume at 22:01 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, 5:03 PM CDT | TSTM WND GST 60 | Ryan, IA | |
| Aug 7, 5:07 PM CDT | TSTM WND DMG | Ryan, IA | Corrects previous tstm wnd dmg report from Ryan. Multiple trees down and 1 grain bin at the Ryan Coop is collapsed from the to to 1/4 down. Time estimated from radar. |
| Aug 7, 5:07 PM CDT | TSTM WND DMG | Ryan, IA | Multiple trees down and 1 grain bin at the Ryan Coop is collapsed from the to to 1/4 down. Time estimated from radar. |
| Aug 7, 5:07 PM CDT | TSTM WND GST 70 | Ryan, IA | |
| Aug 7, 5:11 PM CDT | TORNADO | 3 Wnw Prairieburg, IA | A short lived EF1 tornado with max winds to 100 MPH hit a farmstead causing damage to an outbuilding. A piece of the roof of that building was shot through the wall of the house. The homestead then experienced 2 to 3 minutes of 80 to 90 MPH straight-line winds |
| Aug 7, 5:14 PM CDT | HAIL 4.5 | Ryan, IA | Report of golf ball to softball sized hail. |
| Aug 7, 5:15 PM CDT | TSTM WND DMG | 1 N Prairieburg, IA | Broken windows and significant siding damage to a home from wind driven hail. Machine shed damaged. Liquid storage tank toppled over. Crop damage from wind and hail. Large tree snapped. Time estimated from radar. |
| Aug 7, 5:15 PM CDT | TSTM WND DMG | 2 Nnw Prairieburg, IA | Outbuildings and a house damaged. Windmill tower toppled. Time estimated from radar. |
| Aug 7, 5:15 PM CDT | TSTM WND GST 98 | 1 Ese Prairieburg, IA | Delayed report of measured 98 mph wind gust at Prairieburg. |
| Aug 7, 5:23 PM CDT | TSTM WND DMG | Prairieburg, IA | Trees and powerlines down in town. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this tornado warning; the first came 9 minutes after it went out.
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, 10.0 hours before the alert went out and 330 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.
- 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
The text
As transmitted.
241
WFUS53 KDVN 072202
TORDVN
IAC055-105-113-072245-
/O.NEW.KDVN.TO.W.0074.260807T2202Z-260807T2245Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Quad Cities IA/IL
502 PM CDT Fri Aug 7 2026
The National Weather Service in the Quad Cities has issued a
* Tornado Warning for...
Northwestern Jones County in east central Iowa...
Southwestern Delaware County in northeastern Iowa...
Northeastern Linn County in east central Iowa...
* Until 545 PM CDT.
* At 502 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Ryan, or 11 miles south of Manchester, moving
southeast at 45 mph.
HAZARD...Tornado.
SOURCE...Weather spotters reported funnel cloud.
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...
Coggon, Prairieburg, and Buffalo Creek Park around 505 PM CDT.
Langworthy around 515 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.
&&
LAT...LON 4219 9120 4213 9125 4212 9135 4233 9160
4238 9160 4242 9152
TIME...MOT...LOC 2202Z 316DEG 41KT 4233 9151
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
Gibbs2 follow-up statements
801
WWUS53 KDVN 072213
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
513 PM CDT Fri Aug 7 2026
IAC055-105-113-072245-
/O.CON.KDVN.TO.W.0074.000000T0000Z-260807T2245Z/
Jones IA-Delaware IA-Linn IA-
513 PM CDT Fri Aug 7 2026
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR
NORTHWESTERN JONES...SOUTHWESTERN DELAWARE AND NORTHEASTERN LINN
COUNTIES...
At 513 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Prairieburg, or 13 miles south of Manchester, moving
southeast at 45 mph.
HAZARD...Tornado and three inch hail.
SOURCE...Weather spotters reported a funnel cloud.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Langworthy around 520 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4219 9120 4213 9125 4212 9135 4230 9155
4235 9155 4238 9146
TIME...MOT...LOC 2213Z 313DEG 37KT 4229 9141
TORNADO...RADAR INDICATED
MAX HAIL SIZE...3.00 IN
$$
Gibbs986
WWUS53 KDVN 072224
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
524 PM CDT Fri Aug 7 2026
IAC055-072233-
/O.CAN.KDVN.TO.W.0074.000000T0000Z-260807T2245Z/
Delaware IA-
524 PM CDT Fri Aug 7 2026
...THE TORNADO WARNING FOR SOUTHWESTERN DELAWARE 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
northeastern and east central Iowa.
&&
LAT...LON 4219 9120 4213 9125 4212 9135 4224 9145
4229 9139 4230 9136 4230 9134
TIME...MOT...LOC 2223Z 316DEG 41KT 4220 9129
$$
IAC105-113-072245-
/O.CON.KDVN.TO.W.0074.000000T0000Z-260807T2245Z/
Jones IA-Linn IA-
524 PM CDT Fri Aug 7 2026
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR
NORTHWESTERN JONES AND NORTHEASTERN LINN COUNTIES...
At 523 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Langworthy, or near Anamosa, moving southeast at 45
mph.
HAZARD...Tornado and baseball size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Langworthy around 530 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4219 9120 4213 9125 4212 9135 4224 9145
4229 9139 4230 9136 4230 9134
TIME...MOT...LOC 2223Z 316DEG 41KT 4220 9129
TORNADO...RADAR INDICATED
MAX HAIL SIZE...2.75 IN
$$
GibbsWhat 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 35 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 35 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 2 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, 34 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.
&&
ALELocal storm report, Aug 7, 4:30 PM CDT, 32 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.
&&
ALELocal storm report, Aug 7, 4:34 PM CDT, 28 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, 17 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, 7 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.
&&
ALEThe 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 | 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, 5:03 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 27 min |
| Aug 7, 5:10 PM CDT | Tornado Warning | DVN | Buchanan, Linn | 35 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, 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.