Heavy rains on saturated ground resulted in flash flooding of a portion of Jo Daviess County during the afternoon of June 15.
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.
Heavy rains on saturated ground resulted in flash flooding of a portion of Jo Daviess County during the afternoon of June 15.
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 15, 2:51 AM CST, 10 hours 20 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE QUAD CITIES IA IL 351 AM CDT TUE JUN 15 2010 .SYNOPSIS... WEAK SFC LOW WAS DEPICTED IN MSAS BETWEEN KMIW AND KCID WITH WARM FRONT EXTENDING SEWD NEAR KIOW-KMUT-KGBG LINE. KDVN WSR-88D SHOWS AREA OF TSRA LIFTING ACROSS THE FAR NW CWA IN ZONE OF WARM ADVECTION/ISENTROPIC ASCENT AHEAD OF LOW AND ALSO AIDED BY WEAK MID LEVEL IMPULSE. COLD FRONT EXTENDS SWWD FROM IA SFC LOW INTO KS WHERE REGIONAL RADAR MOSAIC SHOWS NARROW BAND OF SHRA/TSRA HAVING RECENTLY FORMED ALONG THE BOUNDARY. 00Z UPPER AIR ANALYSIS AND WATER VAPOR IMAGERY SHOW MID LEVEL SHORTWAVE TROUGH OVER THE NORTHERN PLAINS WITH REGION LOCATED IN SOUTHWEST FLOW. SLIGHT DRYING HAS OCCURRED PAST 12+ HRS PER 00Z DVN RAOB BUT STILL VERY MOIST ATMOS WITH H85 DEWPTS OF 12-15C AND SFC DEWPTS POOLING IN THE U60S TO NR 70 DEGS ALONG/S OF WARM FRONT. ..05.. && .SHORT TERM...TODAY AND TONIGHT... NO SHORTAGE OF CONCERNS WITH PCPN CHCS/COVERAGE... HEAVY RAIN/FLASH FLOODING POTENTIAL... FOG AND TEMPS TO NAME JUST A FEW. UKMET AND ECMWF MASS FIELDS AND FORCING PROGS DOING BEST WITH RESPECT TO DEPICTING ONGOING PCPN AREAS... AND HAVE FOLLOWED CLOSELY FOR FCST DETAILS. KEY PLAYERS TO FCST WILL BE VORT MAX OVER NE CURRENTLY UNDERCUTTING NORTHERN PLAINS SHORTWAVE... AND SHEARING IMPULSE LIFTING NEWD FROM THE CENTRAL/SOUTHERN PLAINS. GENERAL SUGGESTION IS THAT THE TWO WILL CONVERGE OVER THE CWA THIS AFTN TO BRING LIKELIHOOD OF SHRA/TSRA TO ESPECIALLY SOUTHEAST HALF OF CWA... WITH MORE SCT ACTIVITY FURTHER NW WARM ADVECTION THIS AM FOLLOWED BY POSITIVE VORTICITY ADVECTION THIS AFTN. MAIN CONCERN REMAINS WITH HEAVY RAIN AND FLASH FLOOD POTENTIAL ESPECIALLY IN THE SRN COUNTIES WHERE 1 HR FFG VALUES AROUND 1 INCH. PWAT/S SET TO CLIMB BACK UP IN RANGE OF 1.8-1.9 INCHES TODAY WITH PASSAGE OF THE WARM FRONT... WHICH MEANS ANY STORM TO PRODUCE VERY HEAVY RAIN WITH RATES IN EXCESS OF AN INCH/HR. WIND FIELDS LOOK TO INCREASE IN ADVANCE OF APPROACHING MID LEVEL SHORTWAVE WHICH WILL MEAN STORMS SHOULD MOVE MORE QUICKLY AS OPPOSED TO YESTERDAY. THIS SHOULD HELP WITH CUTTING DOWN ON PCPN AMOUNTS... BUT ANY AREAS THAT SEE REPEATED DEVELOPMENT WILL RUN RISK OF LOCALLY HEAVY RAIN AMOUNTS IN EXCESS OF 1 INCH AND RISK OF FLASH FLOODING. GREATEST RISK FOR FLASH FLOODING REMAINS IN THE SOUTH...BUT INDICATIONS ARE THE HEAVIEST PCPN MAY RESIDE OVER THE EASTERN COUNTIES. SO... DUE TO THE UNCERTAINTIES WITH LOCATION/COVERAGE OF HEAVY RAINS WILL HOLD OFF ON FLASH FLOOD HEADLINES ATTIM... BUT PASS CONCERNS ON TO NEXT SHIFT. OVERALL SEVERE THREAT LOOKS LOW WHICH AGREES WITH SPC THINKING WHICH HAS BULK OF SEVERE RISK S/E OF CWA. BUT IF ANY BREAKS TO ALLOW FOR SUFFICIENT HEATING/DESTABILIZATION CAN/T RULE OUT ISOLD SEVERE WITH MAIN THREAT WIND WITH MARGINAL HAIL. SUCH MOISTURE RICH ENVIRONMENT WITH LOW LCL/S WOULD SUPPORT SOME POTENTIAL FOR FUNNELS AND/OR POSSIBLY BRIEF TORNADO WITH ANY BOUNDARY INTERACTION SIMILAR TO MON. TNGT... FINALLY CAN SAY GOOD RIDDANCE TO THE BOUNDARY AND WET WX AS THE MID LEVEL SHORTWAVE SHIFTS ACROSS THE GREAT LAKES WITH ATTENDANT COLD FRONT DEPARTING FOLLOWED BY COOLER AND DRIER AIR OVRNGT WITH CLEARING. MAY SEE FEW SHRA/TSRA LINGERING VERY EARLY IN EVE FAR EAST UNTIL FRONT PASSES. SFC RIDGE AXIS LOOKS TO REMAIN WEST OF CWA THUS KEEPING IN WEAK CYCLONIC FLOW WHICH MAY BE SUFFICIENT TO PRECLUDE WIDESPREAD DENSE FOG FROM FORMING... AND SO HAVE LEFT OUT ANY MENTION OF FOG ATTIM. SHOULD RIDGING BUILD IN QUICKLY WITH WINDS DROPPING OFF THEN FOG THREAT WOULD INCREASE GIVEN SHARP LLVL INVERSION AND VERY MOIST BL. AS FOR TEMPS... STAYED NEAR GUIDANCE BLEND FAVORING WARMER SIDE TDY AND COOLER SIDE TNGT. ..05.. .LONG TERM...WEDNESDAY THROUGH NEXT MONDAY... WEDNESDAY...00Z MODEL RUNS CONTINUE THEIR TREND OF SUGGESTING A MIDWEEK BOUT OF BOTH SFC AND UPPER RIDGING FOR FAIR AND DRYING WX THIS PERIOD. SOME DECREASE IN BOUNDARY LAYER MOISTURE AND THE STRONGEST INSOLATION OF THE YEAR SUGGEST A WARM DAY ON TAP WED AND GUIDANCE IS TRENDING WARMER SUGGESTING WIDESPREAD MID TO UPPER 80S... EXCEPT IN THE FAR NORTH WHICH SHOULD STAY IN THE LOW TO MID 80S. WILL KEEP LOW CHC POPS IN THE WEST LATE WED NIGHT FOR ELEVATED WING OF THTA-E ADVECTION AND CONVERGENCE IN WAA PATTERN...ALTHOUGH THE NEWLY RUN 00Z ECMWF SUGGESTS THIS ACTIVITY WILL REMAIN OFF TO THE WEST OF THE DVN CWA. THURSDAY INTO FRIDAY...LATEST RUN MEDIUM RANGE GUIDANCE GENERALLY SUGGESTS LARGE SLUG OF UPPER WAVE ENERGY TO EJECT OUT OF WEST COAST L/W TROF THIS CYCLE AND PROPAGATE ACRS THE NORTHWEST HIGH PLAINS AND SOUTH CENTRAL CANADA BY WEEKS END. CONTINUED SOUTHERLY RETURN FLOW LOCALLY WILL BRING THERMAL MODERATION/WARMING AND AMPED UP LLVL MOISTURE LEVELS/DPTS THIS PERIOD WITH HIGHS POSSIBLY APPROACHING 90 DEGREES EVEN WITH INCREASING SFC LAYER RH/S. IF CONVECTIVE DEBRIS CAN BE HELD TO A MINIMUM...TEMPS MAY GET UP INTO THE LOW TO MID 90S ON FRI IN MIXING SOUTHERLY FLOW. WITHOUT MUCH OF A FOCAL POINT OR ORGANIZED FORCING...JUST LOW CHC POPS WARRANTED FOR AIRMASS TYPE SHOWER AND THUNDERSTORM DEVELOPMENT BOTH THU AND FRI IN A WARM AND MOIST/UNSTABLE ENVIRONMENT. BUT A FRONTAL FOCAL POINT MAY GET SHUNTED DOWN ACRS OR NEAR THE DVN CWA OFF PASSING LOW OVER ONTARIO EITHER SOMETIME FRI OR INTO SAT...JUST HARD TO DEFINE AT THIS POINT BUT LATEST MODEL RUNS SUGGEST THE FRIDAY NIGH WINDOW MAY BE CONVECTIVELY ACTIVE. SAT AND SUN...LONG RANGE SIGNALS SUGGEST EITHER BROAD LOW AMPLITUDE RIDGING OR EVEN QUASI-ZONAL FLOW TO REESTABLISH ACRS THE UPPER MIDWEST AGAIN OVER THE WEEKEND EAST OF WESTERN INTERMOUNTAIN L/W TROF. THUS THE MCS STORM TRACK APPEARS WILL WANT TO SET UP SHOP AGAIN ALONG THE REGION FROM THE CENTRAL OR NORTHERN PLAINS INTO THE WESTERN GRT LKS. HARD TO PIN POINT MORE AT THIS TIME IN THE FCST CYCLE...BUT LATEST MEDIUM RANGE MODELS SUGGEST THAT THE DVN FCST AREA MAY BE ALONG OR JUST SOUTH OF THIS RING OF FIRE UNLIKE THE PAST WEEK WHERE THE CWA WAS MORE ON THE NORTH SIDE OF THE MEAN UPPER RIDGE STEERING INFLUENCE. WILL KEEP WARM CONDITIONS FCST INTO THE WEEKEND WITH ONGOING PRECIP CHANCES IN VCNTY OF WAVERING LLVL BAROCLINICITY. ..12.. && .AVIATION... SCT TSRA WILL BE IN VCNTY OF KCID-KDBQ TERMINALS FOR WHILE THIS AM. VARIABLE CONDITIONS ACROSS CWA EARLY THIS AM WITH WARM FRONT BISECTING THE AREA. MAINLY VFR CONDITIONS AT KBRL SOUTH OF THE WARM FRONT WHILE FOG AND LOW CLOUDS WITH IFR/MVFR CONDITIONS. IN GENERAL EXPECT IMPROVING CIGS/VSBYS TODAY WITH INCREASE IN SHRA AND TSRA BY AFTN AHEAD OF COLD FRONT AND UPPER LEVEL DISTURBANCE. DRIER AIR AND SUBSIDENCE WILL BRING CLEARING SKIES WITH W/NW WINDS AOB 10 KTS TNGT PRECLUDING ANY MENTION OF FOG ATTIM. ..05.. && .DVN WATCHES/WARNINGS/ADVISORIES... IA...NONE. IL...NONE. MO...NONE. && 05/12/05
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE QUAD CITIES IA IL 506 AM CDT TUE JUN 15 2010 IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007- 009-015>018-024>026-034-035-MOZ009-010-161015- 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- 506 AM CDT TUE JUN 15 2010 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 THUNDERSTORMS ARE LIKELY ACROSS PORTIONS OF THE OUTLOOK AREA TODAY. THE MAIN THREATS WILL BE LOCALLY HEAVY RAINFALL AND LIGHTNING. IF STORMS MOVE OVER SOME OF THE SAME AREAS REPEATEDLY THEN THERE WILL BE A RISK OF FLASH FLOODING... ESPECIALLY OVER PORTIONS OF SOUTHEAST IOWA... WEST CENTRAL ILLINOIS AND NORTHEAST MISSOURI WHERE THE GROUND IS SATURATED FROM RECENT HEAVY RAINS. THE THREAT FOR SEVERE WEATHER APPEARS LOW AT THIS TIME... AND WOULD CONSIST MAINLY OF ISOLATED DAMAGING WINDS TO 60 MPH AND HAIL TO 1 INCH IN DIAMETER... MAINLY EAST OF THE MISSISSIPPI RIVER. HOWEVER... THERE IS ALSO A LOW POTENTIAL FOR AN ISOLATED TORNADO WITH ANY STORMS INTERACTING WITH A WARM FRONT WHICH IS FORECAST TO EXTEND ROUGHLY NORTHEAST OF A LINE FROM MONTICELLO IOWA TO MOLINE ILLINOIS THIS AFTERNOON. AREA RIVERS ARE EXPERIENCING FLOODING. PLEASE SEE THE LATEST FLOOD STATEMENTS AND FLOOD WARNINGS FOR DETAILS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THERE IS A CHANCE OF ISOLATED TO SCATTERED THUNDERSTORMS IN PORTIONS OF THE OUTLOOK AREA THURSDAY...FRIDAY AND AGAIN SATURDAY. WHILE IT IS TOO EARLY TO DETERMINE ANY SEVERE WEATHER THREAT AT THIS TIME... ANY STORM THAT FORMS AND MAINTAINS WOULD LIKELY PRODUCE LOCALLY HEAVY RAINFALL. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY AND WILL NOT BE NEEDED TONIGHT.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
105 PM CDT TUE JUN 15 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0102 PM FLASH FLOOD LOWDEN 41.86N 90.92W
06/15/2010 CEDAR IA TRAINED SPOTTER
WATER IN BASEMENT. OVER 1.3 INCHES IN ABOUT AN HOUR.
&&
BILLNPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
110 PM CDT TUE JUN 15 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1240 PM FLASH FLOOD 2 W BLUE GRASS 41.51N 90.80W
06/15/2010 MUSCATINE IA NWS EMPLOYEE
WATER OVER HIGHWAY 61 LOW SPOTS...MORE THAN 5 INCHES.
&&
ERVINPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
119 PM CDT TUE JUN 15 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0115 PM FLASH FLOOD 1 N DAVENPORT 41.56N 90.60W
06/15/2010 SCOTT IA TRAINED SPOTTER
STREET FLOODING ALONG KIMBERLY AND DIVISION AND MARQUETTE
AND KIMBERLY. WATER UP TO 1 FOOT DEEP.
&&
DLSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
126 PM CDT TUE JUN 15 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0124 PM HEAVY RAIN 6 NE DAVENPORT 41.62N 90.52W
06/15/2010 M0.77 INCH SCOTT IA NWS EMPLOYEE
.77 IN LESS THAN 20 MINUTES. NE DAVENPORT NEAR 53RD AND
UTICA RIDGE.
&&
DLSSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
127 PM CDT TUE JUN 15 2010
IAZ042-ILZ001-002-007-009-015>018-024>026-034-035-152030-
DUBUQUE IA-PUTNAM IL-JO DAVIESS IL-STEPHENSON IL-CARROLL IL-
WHITESIDE IL-MCDONOUGH IL-ROCK ISLAND IL-HANCOCK IL-WARREN IL-
HENDERSON IL-MERCER IL-HENRY IL-BUREAU IL-
127 PM CDT TUE JUN 15 2010
...HEAVY RAIN MOVING IN...
A LARGE AREA OF HEAVY RAIN...WITH RAINFALL RATES AROUND 1 INCH PER
HOUR...WILL AFFECT THE AREA THROUGH 3 PM. EXPECT A FEW RUMBLES OF
THUNDER...WITH TOTAL AMOUNTS OF 0.5 TO 1.5 INCHES BY LATE AFTERNOON.
EXPECT PONDING OF WATER ON ROADS AND IN LOW-LYING AREAS...AND RISES
IN AREA STREAMS AND CREEKS.
&&
LAT...LON 4019 9115 4197 9014 4238 9047 4238 9066
4229 9067 4233 9096 4265 9107 4266 9074
4251 9062 4250 8941 4220 8940 4219 8968
4159 8963 4159 8917 4111 8916 4114 8964
4123 8966 4115 8988 4115 9043 4028 9045
ERVINPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
133 PM CDT TUE JUN 15 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0130 PM HEAVY RAIN 4 WNW DUBUQUE 42.52N 90.76W
06/15/2010 M1.20 INCH DUBUQUE IA TRAINED SPOTTER
STILL RAINING HEAVILY AT THIS TIME.
&&
DLSThe Quad Cities radar (KDVN), 95 km away, was scanning. The volume nearest the first event began at 19:11 UTC.
1 flash flood. Local standard time, as filed.
Heavy rains of 1.5 inches in 30 minutes resulted in flash flooding in Stockton, IL during the afternoon of June 15. This report was relayed by WREX TV.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2010Every state in 2010This day in weather historyWarnings in Illinois, June 2010
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: 242133.