Several rounds of heavy rain spread over eastern Iowa and northwest Illinois the morning and afternoon hours June 7th, this brought flash flooding to a few areas in eastern Iowa and Illinois.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS DVN wrote it up.
Several rounds of heavy rain spread over eastern Iowa and northwest Illinois the morning and afternoon hours June 7th, this brought flash flooding to a few areas in eastern Iowa and Illinois.
The local office's own words before the first event, 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 the first event at Jun 7, 11:25 AM CST, 35 minutes earlier. Its key messages:
Area Forecast Discussion
National Weather Service Quad Cities IA IL
1225 PM CDT Sun Jun 7 2026
.KEY MESSAGES...
- This morning's round of heavy rain producing storms has seen
prolific heavy rain rates, mesoscale storm interactions, and
nearly continuous redevelopment, resulting in a Flash Flood
Threat Developing!
- Rounds of nocturnal and diurnal convection through Monday
night will bring a risk of locally heavy rainfall due to weak
winds aloft. If the heavy rain occurs in an urban area,
localized flash flooding is possible.
- Heat and humidity will return around mid-week with
temperatures in the 90s and heat indices pushing 100 or
higher. The probability of heat headlines around mid-week is
33-40 percent.
&&
.UPDATE...
Issued at 1150 AM CDT Sun Jun 7 2026
A lake boundary arrived overnight, allowing for enhanced
covergence over our CWA, which has interacted with the upper low
arriving, and exceptionall high PWAT values around 2 inches to
produce heavy rain and thunderstorms. The majority of these have
not been intense, but a few strong storms are out there,
especially in our eastern CWA. NST values of 2-3 are shown by
SPC Meso in Bureau Co, and a tornado was recently reported near
I-80 east of Princeton.
I've opted to issue a Flood Watch for this scenario where
repeated torrential rain is expecte on and off through Monday.
&&
.SHORT TERM /THROUGH MONDAY NIGHT/...
Issued at 207 AM CDT Sun Jun 7 2026
A lake/convection induced boundary has pushed into the area with it
running roughly from KMIW, to just north of the QCA metro area and
then to between KC75 and KPIA. With little in the way of forcing
across the area, only a brief rogue shower or storm is possible
through sunrise.
After sunrise, said boundary will become the focus for new
convection. Here the very short term models differ on timing but
generally agree that the boundary will be the initiation point. The
timing difference is traceable to the arrival of a weak upper level
disturbance from the Plains. Thus through mid-morning mainly dry
conditions will be seen with diurnal convection occurring anytime
from late morning on.
Away from the boundary, areal coverage of the convection looks to be
20-40 percent. Along the boundary a broken line of storms will
develop that slowly moves north through the afternoon. Outflow
boundaries from the convection will then be the foci for more
convection late this afternoon and evening.
After sunset areal coverage will slowly increase as the LLJ
develops. The highest coverage looks to be west of the Mississippi.
Toward sunrise Monday the highest coverage will slowly shift along
the Mississippi River.
Monday isolated to scattered convection will be seen west of the
Mississippi with the higher coverage along/east of the Mississippi.
A weak front arriving from the Plains will bring the convection to
an end from west to east late Monday afternoon and night.
Due to weak winds aloft, no severe storms are anticipated today or
Monday. However, the weak winds aloft means slow moving storms that
will be capable of producing locally heavy rainfall. If that heavy
rain occurs over an urban area, localized flash flooding is
possible.
&&
.LONG TERM /TUESDAY THROUGH SATURDAY/...
Issued at 207 AM CDT Sun Jun 7 2026
Tuesday through Sunday
Assessment...high (>80%) confidence of temperatures well above
normal. Low (20-25%) confidence for rain.
Trends with the models continue to show temperatures well above
normal for much of the week.
However, the highest heat indices now look to occur in the
Tuesday/Wednesday time frame. A seasonably strong front arriving
Wednesday night will bring cooler temperatures on Thursday with
temperatures moving to near normal for next weekend.
Heat indices Tuesday continue to indicate 95 to 100 but areas south
of I-80 have a 30-40% probability of exceeding 100. On Wednesday the
probability of seeing heat indices of 100+ is now at 50-60%.
Depending upon how rain chances play out, heat headlines may be
needed in the Tuesday/Wednesday time frame.
The model consensus indicates the daylight hours of Tuesday are dry.
Tuesday night into Wednesday is a question. A weak signal has
started to develop suggesting a nocturnal storm complex running
around the edge of the heat dome. If this occurs it would play
significantly into the need for potential heat headlines Wednesday.
Albeit a weak signal, some of the ensemble members of the various
models are pointing to rain and have a 20-30 percent chance for rain
Tuesday night into Wednesday.
Wednesday night into Thursday looks interesting.
A much stronger front is progged to move through the area that will
be associated with a strong upper level disturbance. Winds in the
mid-levels of the atmosphere are progged to be around 50 knots
indicating organized storms with the potential for severe storms.
CSU ML progs and other ML analog sites from the June 6th model runs
have a 15-30% probability of severe storms occurring. Thus the
transition from hot and humid conditions may have severe storms.
Thus Wednesday night has the best chances for rain. The current
model consensus has 50-70 percent chances for rain. Outside of
Wednesday night, the model consensus has daily 20-35 percent chances
for rain Thursday through Sunday.
&&
.AVIATION /18Z TAFS THROUGH 18Z MONDAY/...
Issued at 1223 PM CDT Sun Jun 7 2026
An upper low with copious moisture is combining with east winds
over northern Illinois to bring widespread shower and
thunderstorms to eastern Iowa and northwest Illinois. This
nearly continuous process will lead to scattered storms with low
visibility, heavy rain, and lower MVFR cigs / brief IFR cigs to
all sites this aftenroon and evening, and potentially into
Monday afternoon at times. Expect heavy downpours with all
storms, and possibly localized gusty winds, but otherwise, light
wind flow from the southeast to east southeast.
&&
.DVN WATCHES/WARNINGS/ADVISORIES...
IA...Flood Watch through Monday evening for IAZ040>042-051>054-
064>068.
IL...Flood Watch through Monday evening for ILZ001-007-009-015>018-
024.
MO...None.
&&
UPDATE...Ervin
SHORT TERM...08
LONG TERM...08
AVIATION...McClureHazardous Weather Outlook National Weather Service Quad Cities IA IL 416 AM CDT Sun Jun 7 2026 IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007- 009-015>018-024>026-034-035-MOZ009-010-080930- 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- 416 AM CDT Sun Jun 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 Periodic slow moving showers, and scattered mainly afternoon and evening storms are expected. Any storms will be capable of producing locally heavy rainfall. If a storm would stall over an area, or if repeated storms would occur, then localized flash flooding would be possible. Gusty winds are also possible with the strongest storms. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY Scattered storms are expected on Monday, particularly in the afternoon and evening. Locally heavy rainfall and gusty winds are possible with the storms. Hotter weather arrives Tuesday and Wednesday with heat indices near or above 100 degrees possible. Severe thunderstorms are also possible Wednesday and Thursday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated today or tonight. However, rainfall reports over 1 inch will be appreciated.
Special Weather Statement
National Weather Service Quad Cities IA/IL
955 AM CDT Sun Jun 7 2026
IAZ068-ILZ015-071530-
Rock Island IL-Scott IA-
955 AM CDT Sun Jun 7 2026
...A slow-moving thunderstorm will impact portions of eastern Rock
Island and east central Scott Counties through 1030 AM CDT...
At 955 AM CDT, Doppler radar was tracking a slow-moving thunderstorm
near Bettendorf, moving north at 15 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, Bettendorf, Eldridge, Riverdale, Panorama Park, Davenport
Municipal Airport, and Park View.
This includes the following highways...
Interstate 74 in Iowa between mile markers 1 and 3.
Interstate 80 in Iowa between mile markers 295 and 304.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is occurring and may lead to localized flooding.
Do not drive your vehicle through flooded roadways. Stay away from
flooded areas. Report any flooding to local law enforcement.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 4153 9045 4156 9061 4169 9056 4166 9036
TIME...MOT...LOC 1455Z 198DEG 9KT 4158 9053
MAX HAIL SIZE...<0.75 IN
MAX WIND GUST...<40 MPH
ErvinSpecial Weather Statement
National Weather Service Quad Cities IA/IL
1057 AM CDT Sun Jun 7 2026
ILZ017-071645-
Bureau IL-
1057 AM CDT Sun Jun 7 2026
...A slow-moving thunderstorm will impact portions of western Bureau
County through 1145 AM CDT...
At 1057 AM CDT, Doppler radar was tracking a slow-moving thunderstorm
near Buda, or 9 miles west of Princeton, moving north at 15 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...
Walnut, Wyanet, Sheffield, Buda, Neponset, Manlius, New Bedford, and
Providence.
This includes Interstate 80 in Illinois between mile markers 39 and
52.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is occurring and may lead to localized flooding.
Do not drive your vehicle through flooded roadways. Stay away from
flooded areas. Report any flooding to local law enforcement.
&&
LAT...LON 4120 8956 4130 8980 4153 8980 4158 8952
TIME...MOT...LOC 1557Z 182DEG 15KT 4139 8966
MAX HAIL SIZE...<0.75 IN
MAX WIND GUST...<40 MPH
ErvinPreliminary Local Storm Report
National Weather Service Quad Cities IA IL
1059 AM CDT Sun Jun 7 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1020 AM Rain 2 W Bettendorf 41.57N 90.51W
06/07/2026 M1.20 Inch Scott IA Trained Spotter
Rainfall over the past hour. Light rain
falling at time of report.
&&
ALESpecial Weather Statement
National Weather Service Quad Cities IA/IL
1059 AM CDT Sun Jun 7 2026
IAZ042-053-054-066-ILZ001-071645-
Jo Daviess IL-Clinton IA-Jackson IA-Dubuque IA-Jones IA-
1059 AM CDT Sun Jun 7 2026
...Slow-moving thunderstorms will impact portions of northwestern Jo
Daviess, northwestern Clinton, western Jackson, southern Dubuque and
northeastern Jones Counties through 1145 AM CDT...
At 1059 AM CDT, Doppler radar was tracking and area of slow-moving
thunderstorms along a line extending from near La Motte to near
Canton. Movement was north at 15 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...
Dubuque, Maquoketa, Cascade, Epworth, East Dubuque, Farley, Peosta,
Wyoming, Lost Nation, Andrew, Worthington, La Motte, Menominee,
Onslow, Monmouth, St. Donatus, Centralia, Bernard, Center Junction,
and Zwingle.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is occurring and may lead to localized flooding.
Do not drive your vehicle through flooded roadways.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 4251 9064 4251 9054 4225 9048 4196 9078
4209 9112 4244 9113 4252 9064
TIME...MOT...LOC 1559Z 189DEG 13KT 4230 9057 4219 9100
MAX HAIL SIZE...<0.75 IN
MAX WIND GUST...<40 MPH
ErvinPreliminary Local Storm Report
National Weather Service Quad Cities IA IL
1246 PM CDT Sun Jun 7 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1150 AM Rain 2 W Bettendorf 41.57N 90.51W
06/07/2026 M1.47 Inch Scott IA Trained Spotter
Total from AM storms.
&&
ALEPreliminary Local Storm Report
National Weather Service Quad Cities IA IL
1249 PM CDT Sun Jun 7 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1249 PM Rain 1 S Manlius 41.44N 89.67W
06/07/2026 M5.10 Inch Bureau IL Trained Spotter
&&
ALEThe Quad Cities radar (KDVN), 32 km away, was scanning. The volume nearest the first event began at 18:01 UTC.
2 flash flood. Local standard time, as filed.
Vermont Ave was washed out due to water flowing over the road.
Water reported over the road closing this section.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Iowa in 2026Every state in 2026This day in weather historyWarnings in Iowa, June 2026
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1337324, 1337325.