An upper level disturbance combined with a near tropical atmosphere caused thunderstorms to develop along a stationary front from central Iowa into northern Illinois. The strongest storms occurred at the onset and produced measured winds in excess of 70 knots (80 mph) in eastern Benton and western Linn counties.
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.
An upper level disturbance combined with a near tropical atmosphere caused thunderstorms to develop along a stationary front from central Iowa into northern Illinois. The strongest storms occurred at the onset and produced measured winds in excess of 70 knots (80 mph) in eastern Benton and western Linn counties. Heavy rain of up to 1.5 inches in 30 minutes and measured 48 knot (55 mph) winds occurred in Cedar Rapids.
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 25, 2:35 PM CST, 3 hours 43 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE QUAD CITIES IA IL 335 PM CDT SAT JUN 25 2005 .SYNOPSIS... SUMMER WEATHER CONTINUES FOR MUCH OF THE CWA WITH THE SOUTHEAST HALF OF THE CWA IN THE 90S. DEWPOINTS WERE INTO THE 70S AS WELL. A NEARLY 20 DEGREE TEMP GRADIENT EXISTED ACROSS THE CWA...WITH TEMPS RANGING FROM THE MID 90S (FAR EAST) TO THE MID 70S (NORTHWEST). SURFACE MAP SHOWED A STATIONARY FRONT DRAPED FROM EXTREME NORTHERN MO...ACROSS EXTREME SOUTHEASTERN IA...AND INTO EXTREME NORTHERN IL. ANOTHER BOUNDARY EXISTED FROM NEAR KSUX TO NEAR KDBQ. TSRA HAVE DEVELOPED TO OUR SOUTH...ACROSS ILX/S CWA...BUT NOTHING IN OUR CWA EXCEPT SOME MODERATE CU. && .SHORT TERM (TONIGHT THROUGH MIDDAY SUNDAY)... MAIN CHALLENGE IS POSSIBLE HEAVY RAIN TONIGHT. WENT WITH A FLASH FLOOD WATCH FOR SOME OF OUR EXTREME NORTHWESTERN COUNTIES. MODEL DATA SUGGESTS THE INITIATION TO OCCUR ACROSS CENTRAL INTO NORTH CENTRAL IOWA THIS EVENING...WITH THE MCS PROPAGATING EAST-NORTHEASTWARD THEREAFTER. LAST NIGHT...BUCHANAN AND BENTON COUNTIES RECEIVED THE GREATEST RAINFALL...WITH AMOUNTS AS HIGH AS AROUND 2 1/2 INCHES. ALTHOUGH THERE WERE NO REPORTED FLASH FLOODING PROBLEMS LAST NIGHT...THE SAME RAINFALL TONIGHT COULD CAUSE SOME PROBLEMS. THE MAIN FACTOR WILL BE THE INTENSITY AND DURATION. A HEAVY RAINFALL OVER A COUPLE HOURS WOULD OBVIOUSLY CAUSE MORE PROBLEM THAN A MODERATE RAINFALL OVER SEVERAL HOURS. DID NOT MAKE MANY CHANGES TO FORECAST ON SUNDAY MORNING. PREVIOUS FORECAST HAD A GOOD HANDLE. ..JAZ.. && .LONG TERM (MIDDAY SUNDAY THROUGH NEXT SATURDAY)... WE RETURN TO A MAINLY HOT...HUMID AND DRY PATTERN FOR THIS TIME FRAME...WITH STRONG SOUTHERLY FLOW ACROSS THE CWA SUNDAY...MONDAY AND TUESDAY...WITH THE FRONT SHIFTING NORTH OF THE CWA SUNDAY AFTERNOON...AND STAYING ACROSS MINNESOTA AND WISCONSIN DURING MONDAY AND TUESDAY AS A NEW LOW PRESSURE SYSTEM DEVELOPS OUT ON THE HIGH PLAINS OF SOUTH DAKOTA...NEBRASKA AND KANSAS. AN UPPER LEVEL LOW FINALLY EJECTS THIS LOW OUT JUST NORTH OF THE CWA AROUND MID WEEK. THE TIMING OF THIS IS SOMEWHAT PROBLEMATIC...WITH THE TIMING OF THE COLD FRONT STILL RANGING FROM EARLY WEDNESDAY THROUGH THURSDAY. HAVE GONE WITH A SLIGHTLY SLOWER SOLUTION THAN THE GFS...SOMEWHAT TOWARDS THE ECMWF WHICH IS THE SLOWEST OF THE SOLUTIONS. EITHERWAY...HAVE LOW CHANCES OF PRECIPITATION IN WEDNESDAY NIGHT AND THURSDAY...WITH BEST CHANCES NORTH. SOME COOLER AIR TO MOVE INT FOR THURSDAY...BUT WE RETURN TO THE 90S AGAIN BY THE WEEKEND. ..LE.. && .DVN WATCHES/WARNINGS/ADVISORIES... IA...FLASH FLOOD WATCH FOR BUCHANAN...DELAWARE AND BENTON COUNTIES TONIGHT. IL...NONE. MO...NONE. && JAZ/LE
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE QUAD CITIES IA IL 459 AM CDT SAT JUN 25 2005 IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007- 009-015>018-024>026-034-035-MOZ009-010-261000- BENTON IA-BUCHANAN IA-BUREAU IL-CARROLL IL-CEDAR IA-CLARK MO- CLINTON IA-DELAWARE IA-DES MOINES IA-DUBUQUE IA-HANCOCK IL- HENDERSON IL-HENRY IA-HENRY IL-IOWA IA-JACKSON IA-JEFFERSON IA- JO DAVIESS IL-JOHNSON IA-JONES IA-KEOKUK IA-LEE IA-LINN IA-LOUISA IA- MCDONOUGH IL-MERCER IL-MUSCATINE IA-PUTNAM IL-ROCK ISLAND IL- SCOTLAND MO-SCOTT IA-STEPHENSON IL-VAN BUREN IA-WARREN IL- WASHINGTON IA-WHITESIDE IL- 459 AM CDT SAT JUN 25 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL IOWA...SOUTHEAST IOWA...NORTHWEST ILLINOIS...NORTHEAST MISSOURI... NORTHEAST IOWA...WEST CENTRAL ILLINOIS AND NORTH CENTRAL ILLINOIS. .DAY ONE...TODAY AND TONIGHT TODAY...A LARGE AREA OF SHOWERS AND THUNDERSTORMS OVER CENTRAL AND NORTHEAST IOWA WILL MOVE SOUTHEAST AND SLOWLY DISSIPATE. HEAVY RAINFALL TOTALS ARE POSSIBLE WITH THESE STORMS ALONG THE HIGHWAY 20 CORRIDOR IN IOWA. MORE SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP LATER THIS MORNING AND THIS AFTERNOON ALONG A STATIONARY FRONT NEAR INTERSTATE 80. LOCALIZED HEAVY RAIN...GUSTY WINDS TO 50 MPH...AND SMALL HAIL WILL BE POSSIBLE WITH THE STORMS THIS AFTERNOON. TONIGHT...ANOTHER ROUND OF THUNDERSTORMS IS EXPECTED. THE HIGHWAY 20 CORRIDOR HAS THE BEST CHANCES OF SEEING THUNDERSTORMS...WITH THE POTENTIAL FOR HEAVY RAINFALL. THUNDERSTORMS WILL BE MORE SCATTERED BETWEEN HIGHWAY 20 AND HIGHWAY 30 WITH RAINFALL AMOUNTS DROPPING OFF QUICKLY. ALONG AND SOUTH OF INTERSTATE 80 DOWN TO HIGHWAY 34... THUNDERSTORMS ARE EXPECTED TO BE ISOLATED AT BEST...WITH DRY CONDITIONS SOUTH OF HIGHWAY 34. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THUNDERSTORMS WILL LINGER INTO SUNDAY MORNING BEFORE DISSIPATING. AREAS NORTH OF HIGHWAY 30 HAVE THE BEST CHANCES FOR LINGERING MORNING THUNDERSTORMS. ISOLATED THUNDERSTORMS MAY DEVELOP SUNDAY AFTERNOON ACROSS THE ENTIRE AREA. MONDAY THROUGH WEDNESDAY...HOT AND HUMID CONDITIONS ARE EXPECTED TO CONTINUE. HEAT INDICES ARE EXPECTED TO BE IN THE 95 TO 100 DEGREE RANGE EACH AFTERNOON. THERE IS ANOTHER CHANCE OF THUNDERSTORMS WITH THE PASSAGE OF A COLD FRONT WEDNESDAY NIGHT. HOWEVER...THERE IS ALSO THE POSSIBILITY THAT THE PASSAGE OF THIS FRONT MAY BE MARKED ONLY BY A CHANGE IN WIND DIRECTION. .SPOTTER INFORMATION STATEMENT... ERVIN/08
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
631 PM CDT SAT JUN 25 2005
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0628 PM HAIL AMANA 41.80N 91.87W
06/25/2005 0.50 INCH IOWA IA BROADCAST MEDIA
REPORTED BY TV.
&&
WEPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
633 PM CDT SAT JUN 25 2005
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0606 PM TSTM WND GST NORWAY 41.90N 91.92W
06/25/2005 70 MPH BENTON IA TRAINED SPOTTER
70 MPH WIND GUST FROM TSTM.
&&
WEPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
635 PM CDT SAT JUN 25 2005
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0612 PM TSTM WND GST FAIRFAX 41.92N 91.78W
06/25/2005 83 MPH LINN IA TRAINED SPOTTER
TSTM WIND GUST 83 MPH.
&&
WEPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
646 PM CDT SAT JUN 25 2005
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0622 PM TSTM WND GST CEDAR RAPIDS 41.97N 91.67W
06/25/2005 54 MPH LINN IA ASOS
MEASURED AT CEDAR RAPIDS AIRPORT TSTM GUST OF 54 MPH.
&&
WEPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
706 PM CDT SAT JUN 25 2005
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0705 PM HEAVY RAIN CEDAR RAPIDS 41.97N 91.67W
06/25/2005 1.25 INCH LINN IA BROADCAST MEDIA
RAINFALL OF 1.25 INCHES OF RAIN IN LAT 30 MINUTES.
&&
WEPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
710 PM CDT SAT JUN 25 2005
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0645 PM TSTM WND GST CEDAR RAPIDS 41.97N 91.67W
06/25/2005 55 MPH LINN IA TRAINED SPOTTER
55 MPH WIND GUST MEASURED WITH TSTM. 1.5 INCHES OF
RAINFALL BETWEEN 630 AND 700 PM.
&&
WEThe Quad Cities radar (KDVN), 95 km away, was scanning. The volume nearest the first event began at 00:17 UTC.
4 thunderstorm wind. Local standard time, as filed.
Power out.
Tree down on a house; power lines down in city.
Trees down
Trees down
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2005Every state in 2005This day in weather historyWarnings in Illinois, June 2005
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: 5462302, 5462303, 5462304, 5462305.