Alert archive / Iowa / Tornado Warnings in 2026
Tornado Warning 73, NWS Quad Cities, IA
NWS Quad Cities, IA issued this tornado warning at Aug 7, 2026, 4:20 PM CDT for Buchanan County, Iowa. It was in force for 40 min. 7 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, 4:20 PM CDT (21:20 UTC)
- Expired
- Aug 7, 2026, 5:00 PM CDT
- In force
- 40 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 2.0 in
County Buchanan County, IA
The radar
The Quad Cities radar (KDVN), 142 km from the middle of the area, began a volume at 21:21 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, 4:28 PM CDT | TSTM WND DMG | Independence, IA | A large tree down on the east side of town. Time estimated from radar. |
| Aug 7, 4:30 PM CDT | TSTM WND DMG | 1 W Three Elms County, IA | Road sign torn out of the ground and blown onto the shoulder of the road. Time estimated from radar. |
| Aug 7, 4:30 PM CDT | TSTM WND DMG | 4 Sse Stanley, IA | Roof of a livestock barn is halfway torn off. Time estimated from radar. |
| Aug 7, 4:30 PM CDT | TSTM WND DMG | 4 S Stanley, IA | Roof damage to livestock barns. Time estimated from radar. |
| Aug 7, 4:37 PM CDT | TSTM WND GST 55 | 2 Ssw Three Elms County, IA | PWS. |
| Aug 7, 4:53 PM CDT | TSTM WND GST 60 | 2 W Monti, IA | ISU mesonet. Time estimated from radar. |
| Aug 7, 5:04 PM CDT | TSTM WND GST 60 | Independence, IA | Delayed report. |
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
Minneapolis, MN (KMPX), launched 12:00Z, 9.3 hours before the alert went out and 299 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
- 506 J/kg
- Mixed-layer CIN
- -343 J/kg
- Mixed-layer LCL
- 1332 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 211 m²/s²
- 0-3 km storm-relative helicity
- 250 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
982
WFUS53 KDVN 072120
TORDVN
IAC019-072200-
/O.NEW.KDVN.TO.W.0073.260807T2120Z-260807T2200Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Quad Cities IA/IL
420 PM CDT Fri Aug 7 2026
The National Weather Service in the Quad Cities has issued a
* Tornado Warning for...
Buchanan County in northeastern Iowa...
* Until 500 PM CDT.
* At 420 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Fontana County Park, or 7 miles north of
Independence, moving southeast at 45 mph.
HAZARD...Tornado and hail up to two inches in diameter.
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...
Independence, Winthrop, Stanley, Jakway Park, Otterville,
Wapsipinicon Golf Course, Independence Airport, and Buchanan
County Fairgrounds around 425 PM CDT.
Quasqueton and Winthrop Golf Course around 430 PM CDT.
Rowley and Monti around 435 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.
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4264 9175 4257 9161 4247 9161 4247 9160
4230 9160 4230 9185 4237 9206 4247 9206
4247 9208 4252 9207 4264 9191
TIME...MOT...LOC 2120Z 308DEG 40KT 4257 9194
TORNADO...RADAR INDICATED
MAX HAIL SIZE...2.00 IN
$$
Gibbs2 follow-up statements
330
WWUS53 KDVN 072124
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
424 PM CDT Fri Aug 7 2026
IAC019-072200-
/O.CON.KDVN.TO.W.0073.000000T0000Z-260807T2200Z/
Buchanan IA-
424 PM CDT Fri Aug 7 2026
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR BUCHANAN
COUNTY...
At 424 PM CDT, a confirmed tornado was located over Otterville, or
near Independence, moving southeast at 45 mph.
HAZARD...Damaging tornado and two inch hail.
SOURCE...Emergency management confirmed tornado.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornado will be near...
Independence, Winthrop, Quasqueton, Rowley, and Buchanan County
Fairgrounds around 430 PM CDT.
Winthrop Golf Course and Monti around 435 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
This storm has a history of producing tornadoes. Seek shelter now!
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4264 9175 4257 9161 4247 9161 4247 9160
4230 9160 4230 9185 4237 9206 4247 9206
4247 9208 4252 9207 4264 9191
TIME...MOT...LOC 2124Z 308DEG 40KT 4254 9190
TORNADO...OBSERVED
MAX HAIL SIZE...2.00 IN
$$
Gibbs352
WWUS53 KDVN 072140
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
440 PM CDT Fri Aug 7 2026
IAC019-072200-
/O.CON.KDVN.TO.W.0073.000000T0000Z-260807T2200Z/
Buchanan IA-
440 PM CDT Fri Aug 7 2026
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR BUCHANAN
COUNTY...
At 439 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Winthrop, or 9 miles east of Independence, moving
southeast at 45 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.
Locations impacted include...
Monti.
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!
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4264 9175 4257 9161 4247 9161 4247 9160
4230 9160 4230 9185 4237 9206 4247 9206
4250 9202 4264 9183
TIME...MOT...LOC 2139Z 308DEG 40KT 4243 9171
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.75 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, 1 hour 53 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, 1 hour 53 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, 10 hours 20 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.
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 | DVN | Buchanan | 31 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, 5:10 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.