A warm front extended along Interstate 80 on June 19, 2014 with a very moist air mass located near and south of the front. Precipitable waters of 2 inches was over the area which is in the 99th percentile for June.
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.
A warm front extended along Interstate 80 on June 19, 2014 with a very moist air mass located near and south of the front. Precipitable waters of 2 inches was over the area which is in the 99th percentile for June. A slow moving cold front advancing from the west triggered numerous thunderstorms, many producing flash flooding along with a few reports of damaging winds. The most vulnerable area for flash flooding was north of Interstate 80 in Iowa due to saturated ground from previous days of heavy rainfall. In addition to the heavy rainfall, some severe weather was reported. Trained spotters observed a weak tornado southeast of the town of Delaware, Iowa in Delaware County. The tornado left a damage path to the northeast, ending near Colesburg, Iowa for a path length of nearly 16 miles.
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 18, 10:41 PM CST, 1 hour 54 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE QUAD CITIES IA IL 1141 PM CDT WED JUN 18 2014 .SYNOPSIS... ISSUED AT 349 PM CDT WED JUN 18 2014 LATEST SFC ANALYSIS WAS INDICATING THIS MORNING/S OUTFLOW BOUNDARY COALESCED WITH MAIN WARM FRONT DRAPED FROM FAR SOUTHEAST SD...SOUTHEASTWARD INTO SOUTHEASTERN IA AND WEST CENTRAL IL NEAR GALESBURG. BEST PRESSURE FALLS ACRS CENTRAL IL ATTM...AND MAX ACRS LK MI. BUT FALLS HAVE BEEN INCREASING SOME ALONG THE BOUNDARY ACRS SOUTH CENTRAL INTO NW IA. LOW TO MID 70 SFC DPTS POOLED ALONG AND SOUTH OF THE BOUNDARY COMBINING WITH NEAR 90 DEGREE AMBIENT TEMPS PRODUCING UPPER 90 TO LOW 100 HEAT INDEX READINGS IN THE FAR SOUTHERN CWA. WILL PUT OUT A SPECIAL WX STATEMENT THROUGH EARLY EVENING FOR THIS HEAT/UNCOMFORTABLE INDEX. ALOFT...LOOKING AT MID/UPPER LEVEL MOISTURE FLOW PATTERNS ON WATER VAPOR IMAGERY SUGGEST SHARPENING OMEGA UPPER RIDGE ALONG AND WEST OF THE MS RVR VALLEY...WITH LARGE MCV ACRS WI INTO WESTERN MI. MAIN UPSTREAM CLOSED UPPER LOW WAS NOTED ACRS ID AND WESTERN MT WHICH WAS SPRAWLING DIFFLUENT CYCLONIC STEERING FLOW ACRS THE NW HIGH PLAINS. && .SHORT TERM...(THIS EVENING THROUGH THURSDAY) ISSUED AT 349 PM CDT WED JUN 18 2014 TONIGHT...CHALLENGING SCENARIO TO DETERMINE CONVECTIVE RISK AND COVERAGE. THE DVN CWA APPEARS TO LIE RIGHT UNDER THE HEART OF THE UPPER RIDGE AXIS FOR MUCH OF THE NIGHT...WITH BEST ORGANIZED FORCING AREAS FOR MORE DEVELOPED MCS TYPE ACTIVITY ACRS THE CENTRAL TO NORTHERN PLAINS/NW MN...AND OFF TO THE EAST ACRS THE OH RVR VALLEY AND EASTERN GRT LKS. BUT WITH LLVL BOUNDARY BI-SECTING THE STATE OF IA FROM NW-SE AND TRYING TO RETREAT NORTHWARD OVERNIGHT... INCREASING SOUTHWESTERLY LLJ MAY FUEL ELEVATED TO SLIGHTLY ELEVATED ISOLATED TO SCTRD STORMS NORTH OF THE BOUNDARY FROM MID EVENING AND INTO THE OVERNIGHT. THIS WOULD SUGGEST HIGHER POPS WARRANTED FOR THE NORTHERN HALF TO THIRD FROM 03Z ON INTO EARLY THU MORNING. BUT WILL NOT GO OVER HIGH CHC POPS WITH EXPECTED LIMITED COVERAGE OR MCS DEVELOPMENT IN THE LOCAL AREA. LOW TO MID LEVEL SOUTHWEST FLOW ENHANCED H75-H7 MB CAP STILL BEING PUMPED UP ACRS MUCH OF IA INTO NW IL TO CONTEND WITH...SUPPORTING MORE OF A SCTRD ELEVATED CONVECTIVE DEVELOPMENT. SEVERAL HIRES MODELS KEEP MOST OF THE DVN CWA MAINLY DRY OVERNIGHT WITH SCTRD WING OF ELEVATED STORMS ACRS SOUTHEASTERN MN..INTO SOUTHERN WI AND NE IL. BUT CAN NOT TRUST THESE TOTALLY WITH STILL THE POTENTIAL THAT THEY MAY BE TOO FAR NORTH. WITH SUCH A HEFTY CAPE FEED...DESPITE MARGINAL DEEP SHEAR ANY ROBUST ELEVATED STORMS WILL BE ABLE TO PRODUCE LARGE HAIL...VERY HEAVY RAINFALL AND POSSIBLE LOCALIZED WET MICROBURST WINDS IF A STORM IS SHALLOW ELEVATED. UNLESS AN MCS CAN DEVELOP OUT OF NW IA AND PROPAGATE EAST-SOUTHEAST INTO THE LOCAL AREA LATE TONIGHT... EXPECTED ISOLATED TO SCTRD STORMS AND THEIR COVERAGE DO NOT SUPPORT THE NEED FOR A FLASH FLOOD WATCH FOR NOW...ESPECIALLY AFTER LIMITED RAINFALL OCCURRED LAST NIGHT ACRS THE PREVIOUS HARD HIT AREAS OF THE NORTHERN CWA. LOW TEMPS IN THE LOWER TO MID 70S...BUT SOME UPPER 60S POSSIBLE IN THE NORTHEASTERN CWA IF WARM FRONT DOES NOT RETREAT BACK ACRS THOSE AREAS. THU...COULD BE A DAY WITH INCREASING THUNDERSTORMS ACTIVITY ESPECIALLY DURING THE AFTERNOON AS A WARM AIR ADVECTION TYPE WING OF THTA-E ADVECTION AND SOME CONVERGENCE SWEEPS ACRS THE AREA FROM SW- TO-NORTHEAST. HIGH TEMPS TRICKY DEPENDING ON CLOUD DEBRIS AND BOUNDARY PLACEMENT...BUT IF HIGHS NEAR-GET INTO THE UPPER 80S/90 WITH AT LEAST LOWER 70 DPTS...SBCAPES OF 3-4+K J/KG WILL AGAIN BE AVAILABLE TO FUEL STRONG TO SVR STORMS BY THU AFTERNOON. BUT ONGOING MARGINAL DEEP SHEAR PROFILES BECOMING MORE UNIFORM BY AFTERNOON/IF LLVLS NOT INTERRUPTED BY OUTFLOW BOUNDARIES/ SUGGEST MARGINAL SVR RISK/NOT HIGH END WITH 1-1.25 INCH HAIL AND WIND GUSTS UP TO 65 MPH WITH STRONGEST STORMS. LOCALLY HEAVY RAIN MAY BE MORE OF A WIDESPREAD THREAT. HIGH CHC TO LOW LIKELY POPS FOR THE AFTERNOON. ..12.. .LONG TERM...(THURSDAY NIGHT THROUGH NEXT WEDNESDAY) ISSUED AT 349 PM CDT WED JUN 18 2014 THE MAIN FORECAST ISSUE IN THE LONG TERM PERIOD IS POTENTIAL FOR ANOTHER ROUND OF HEAVY RAIN AND ISOLATED SEVERE WEATHER THURSDAY NIGHT. ALTHOUGH FINE DETAILS ARE STILL IN QUESTION...THERE IS GENERAL MODEL CONSENSUS ON THE SCENARIO SETTING UP FOR THURSDAY NIGHT. EXPECT A WARM FRONT TO BE IN PLACE ACROSS THE FORECAST AREA. THE PERSISTENT UPPER RIDGE WILL FINALLY GIVE WAY TO THE MAIN UPPER LOW WHICH WILL PUSH EAST ACROSS THE REGION THURSDAY NIGHT. WITH A HIGH CAPE/MODEST DEEP LAYER SHEAR ENVIRONMENT...THE OVERALL SEVERE THREAT MAY BE SOMEWHAT INHIBITED...BUT WITH PRECIPITABLE WATER VALUES AOA 2 INCHES...HEAVY RAIN AND LOCALIZED FLASH FLOODING WILL LIKELY BE OF CONCERN. THE GENERAL PROGRESSION OF THE WARM FRONT AND SYNOPTIC FORCING SUGGEST THE NORTHERN HALF OF THE FORECAST AREA WILL BE FAVORED FOR THE HIGHER RAINFALL AMOUNTS...ACROSS SOME OF THE SAME AREAS THAT HAVE RECEIVED HEAVY RAIN OVER THE PAST SEVERAL DAYS. LINGERING CONVECTION IS POSSIBLE FRIDAY MORNING...MAINLY EAST OF THE MISSISSIPPI RIVER. HAVE OPTED TO REMOVE ALL POPS FOR FRIDAY NIGHT WITH H5 RIDGING ACROSS THE FORECAST AREA. LOOKING AHEAD...EXPECT AN ACTIVE ZONAL PATTERN OVER THE WEEKEND WITH CONTINUED STORM CHANCES. BY MONDAY INTO TUESDAY...THE GFS/ECMWF ARE INDICATING A SLOW MOVING UPPER TROUGH AND SURFACE BOUNDARY IN PLACE WITH POTENTIAL FOR ADDITIONAL HEAVY RAIN/SEVERE WEATHER. ABOVE NORMAL TEMPS WILL LIKELY PERSIST THROUGH SUNDAY...BEFORE COOLING DOWN TO NEAR OR SLIGHTLY BELOW SEASONAL NORMALS LATE IN THE PERIOD. && .AVIATION...(FOR THE 06Z TAFS THROUGH 06Z THURSDAY NIGHT) ISSUED AT 1137 PM CDT WED JUN 18 2014 CHANGEABLE CONDITIONS THE NEXT 24+ HOURS WITH VFR CONDITIONS MOST OF THE TIME WITH EPISODES OF MVFR/IFR IN THUNDERSTORMS AND PRECIPITATION. A WEAK BACKDOOR COLD FRONT WILL STALL ACROSS OR JUST SOUTH OF I-80 CORRIDOR RESULTING IN THUNDERSTORMS TO FIRE THE NEXT 24 HOURS AS WEAK DISTURBANCES INTERACT WITH THE BOUNDARY. WINDS WILL TEND TO BE LIGHT EASTERLY AT 5 TO 10 KTS AT CID/DBQ/MLIU TERMINALS AND MOSTLY SOUTHERLY AT BRL TERMINAL. CIGS WILL BE MOSTLY 1-3K AGL AND VSBYS 1-5 MILES IN PRECIPITATION...LASTING A FEW HOURS BEYOND AS THE PRECIPITATION ENDS. HEAVY RAINS ARE POSSIBLE...ESPECIALLY AT DBQ. && .DVN WATCHES/WARNINGS/ADVISORIES... IA...NONE. IL...NONE. MO...NONE. && SYNOPSIS...12 SHORT TERM...12 LONG TERM...RP KINNEY AVIATION...NICHOLS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE QUAD CITIES IA IL 435 PM CDT WED JUN 18 2014 IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007- 009-015>018-024>026-034-035-MOZ009-010-191000- 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- 435 PM CDT WED JUN 18 2014 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...LATE AFTERNOON AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS EVENING AND TONIGHT OVER THE ENTIRE OUTLOOK AREA. SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS THE AREA THIS EVENING AND INTO THE OVERNIGHT. MORE FAVORED AREAS FOR THIS ACTIVITY CURRENTLY APPEAR TO BE ALONG AND NORTH OF INTERSTATE 80. THE MAIN SEVERE WEATHER THREATS WILL INCLUDE DAMAGING WINDS AND LARGE HAIL. ISOLATED BRIEF TORNADOES WILL BE A SECONDARY THREAT. ANY THUNDERSTORMS TONIGHT WILL BE CAPABLE OF HEAVY RAINFALL...WHICH MAY LEAD TO FLASH FLOODING WHERE SOILS ARE SATURATED FROM RECENT HEAVY RAINFALL. VERY WARM AND MUGGY CONDITIONS WILL CONTINUE INTO EARLY EVENING WITH HEAT INDEX READINGS IN THE 90S TO AROUND 100 ALONG AND SOUTH OF INTERSTATE 80. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY VERY WARM AND HUMID CONDITIONS WILL BE SEEN ACROSS THE AREA THURSDAY THROUGH SATURDAY. HEAT INDEX READINGS IN THE 90S ARE EXPECTED. THE ACTIVE WEATHER PATTERN WILL REMAIN ACROSS THE AREA WITH A DAILY CHANCE OF THUNDERSTORMS FROM THURSDAY THROUGH TUESDAY. THE STORM PREDICTION CENTER HAS A SLIGHT RISK OF SEVERE STORMS THURSDAY FOR AREAS WEST AND NORTH OF A DUBUQUE...TO MACOMB...TO KIRKSVILLE LINE. THE PRIMARY THREAT APPEARS TO BE DAMAGING WINDS. HOWEVER...LARGE HAIL AND A FEW ISOLATED TORNADOES CANNOT BE RULED OUT. FRIDAY THROUGH TUESDAY...IT IS TOO EARLY TO DETERMINE THE RISK OF SEVERE STORMS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TONIGHT. RAINFALL REPORTS OVER AN INCH ARE APPRECIATED. 12
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
828 PM CDT WED JUN 18 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 PM HEAVY RAIN 6 SSE ELMOVILLE 42.19N 90.02W
06/18/2014 M1.24 INCH CARROLL IL TRAINED SPOTTER
APPROXIMATLY 1/4 INCH OF RAIN THIS MORNING AND 1.10
INCHES OF RAIN DURING THE SHOWERS THIS EVENING.
&&
TASPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1130 PM CDT WED JUN 18 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1127 PM FLASH FLOOD 4 E LA MOILLE 41.53N 89.20W
06/18/2014 BUREAU IL LAW ENFORCEMENT
MANY AREA ROADS BECOMING IMPASSABLE DUE TO WATER ON ROAD
SURFACES AND IN LOW LYING LOCATIONS. WATER REPORTED
EVERYWHERE. RAIN CONTINUES.
&&
BILLNPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
111 AM CDT THU JUN 19 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0110 AM HEAVY RAIN DUBUQUE 42.50N 90.69W
06/19/2014 M1.13 INCH DUBUQUE IA TRAINED SPOTTER
BETWEEN MIDNIGHT AND 1 AM.
&&PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
124 AM CDT THU JUN 19 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0123 AM HEAVY RAIN 2 N STERLING 41.83N 89.69W
06/19/2014 M1.20 INCH WHITESIDE IL TRAINED SPOTTER
MIDNIGHT TO 1 AM.
&&The Quad Cities radar (KDVN), 94 km away, was scanning. The volume nearest the first event began at 06:36 UTC.
12 flash flood, 1 flood. Local standard time, as filed.
The emergency manager reported flash flooding along Catfish Creek at Swiss Valley Park. The campground was evacuated.
Law enforcement 22nd street from central to elm closed due to street flooding.
Law enforcement reported Herber Road near John Deere Road closed due to mudslide. A road was closed due to flooding along the Little Maquoketa River.
A trained spotter reported water flowing across several roads with water depths up to 1.5 feet in spots.
Otter creek was flowing over roadways and water was rising where cows were standing in fields.
A trained spotter reported water with a strong current flowing across roadways.
Law enforcement reported county road washouts and water over the road on Highway 13 and Highway 3.
A trained spotter reported street flooding with water over the roads up to the curbs.
The emergency manager reported street flooding.
A trained spotter reported water over Highway 3.
A trained spotter reported water over Highway 3.
A trained spotter reported streets flooding up to the curb in Mount Pleasant on Highway 34.
Streets are flooding up to the curb in Mount Pleasant along Highway 34.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Iowa in 2014Every state in 2014This day in weather historyWarnings in Iowa, June 2014
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: 524990, 524991, 524992, 524993, 524994, 524995, 524996, 524997, 524998, 524999, 525000, 525001, 525002.