A disturbance moving eastward out of Kansas brought strong to severe thunderstorms to most of Eastern Iowa, Northeast Missouri, and Northwest Illinois during the afternoon and early evening hours of June 16. Thunderstorm winds brought down trees and power and phone lines in Jefferson County with widespread heavy rain south of Interstate 80.
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 disturbance moving eastward out of Kansas brought strong to severe thunderstorms to most of Eastern Iowa, Northeast Missouri, and Northwest Illinois during the afternoon and early evening hours of June 16. Thunderstorm winds brought down trees and power and phone lines in Jefferson County with widespread heavy rain south of Interstate 80. High temperatures ranged from 81 degrees at Independence, IA to 92 degrees in Macomb, IL.
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 16, 2:09 PM CST, 2 hours 5 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE QUAD CITIES IA IL 309 PM CDT SAT JUN 16 2012 .SYNOPSIS... TRAILING CONVERGENCE LEFT FROM THE MCV OVERNIGHT HAS ALLOWED DEWPOINTS TO CLIMB TO THE LOWER 70S OVER THE SOUTHERN HALF OF THE CWA. STORMS HAVE FIRED IN THIS AREA AND ARE STRONG TO NEAR SEVERE AS OF 2 PM. && .SHORT TERM... A SEVERE WEATHER AND HEAVY RAIN EVENT SHOULD IMPACT ROUGHLY THE SOUTHERN 1/2 OF THE CWA LATE THIS AFTERNOON AND THIS EVENING. WIND THREAT IS HIGHEST SOUTH...OR WHERE EVER THE APEX OF THE EXPECTED BOW CROSSES THROUGH. HEAVY RAIN IS HIGHEST THREAT ON THE NORTH SIDE OF THIS BOWING SEGMENT...WHICH SHOULD LINE UP RAINS FROM NORTH OF OTTUMWA...TO THE QUAD CITIES...TO NORTHERN ILLINOIS. RAINFALL OF 1 TO 2 INCHES IS POSSIBLE GIVEN HIGH PWAT AIRMASS. OUTSIDE OF THIS AXIS...ESPECIALLY NORTHWEST...AMOUNTS SHOULD BE MUCH LESS. ERVIN .LONG TERM...SUNDAY NIGHT THROUGH NEXT SATURDAY... HOT AND HUMID CONDITIONS TO RETURN FOR EARLY WEEK AS THE FRONT LIFTS BACK NORTH...RETURNING THE REGION TO A DEEP...WARM SOUTHWEST FLOW WITH LITTLE CHANCE FOR RAIN UNTIL A COLD FRONT PUSHES THROUGH LATE WED. SLIGHTLY COOLER AND UNSETTLED CONDITIONS THEN FOLLOW FOR LATE WEEK INTO NEXT WEEKEND. SUNDAY NIGHT...WILL KEEP SLIGHT CHANCES FOR THUNDERSTORMS AS WEAKENING WARM FRONT LIFTS NORTHWARD THROUGH THE REGION. 12Z MODELS CONTINUE THE BETTER CHANCE FOR STORMS WELL TO THE NORTH IN MN AND WI...IN AN AREA OF BETTER THETAE ADVECTION AND MID LEVEL FORCING. MONDAY IS SETTING UP TO BE ONE OF THE WARMEST DAYS OF THE YEAR SO FAR AS SW WINDS FROM 40 TO 50 KTS AT 850 MB ADVECT TEMPERATURES AS WARM AS 20 TO NEARLY 24 DEG C OVER THE REGION. DEEP MIXING IN THE STRONG AND CAPPED SW FLOW SHOULD PRODUCE BREEZY CONDITIONS WITH HIGHS INTO THE MID 90S. IF SURFACE DEWPOINTS HOLD IN THE MID TO UPPER 60S...HEAT INDEX VALUES MAY APPROACH 100. THIS VERY WARM AND MUGGY AIRMASS REMAINS IN PLACE TUE THROUGH WED WITH HIGHS IN THE UPPER 80S TO MID 90S AND LOWS IN THE UPPER 60S TO LOWER 70S. HAVE KEPT POPS FOCUSED ON LATE WED AND WED NIGHT...WHERE MODELS ARE IN GOOD AGREEMENT DEPICTING THE COLD FRONT PUSHING THROUGH. CHANCE POPS THAT ARE MAINTAINED FOR THU THROUGH FRI MAY BE OVERDONE...DEPENDING ON HOW FAR SOUTH THE FRONT SETTLES AND THE TRACK OF MID LEVEL SHORTWAVES AS THE UPPER LEVEL FLOW BECOMES SLIGHTLY NW. TEMPERATURES SHOULD COOL BACK CLOSER TO LATE JUNE NORMALS WITH HIGHS IN THE LOWER TO MID 80S AND LOWS IN THE 60S. SHEETS && .AVIATION... THUNDERSTORMS ONGOING OVER SOUTHEAST IOWA AND WEST CENTRAL ILLINOIS MAY CONTINUE TO IMPACT BOTH BRL AND POSSIBLY MLI THROUGH 22Z. A MOIST AND UNSTABLE AIRMASS IS OVER EASTERN IOWA AND NORTHWEST ILLINOIS THIS AFTERNOON...AND A COLD FRONT WILL MOVE INTO THE AREA TONIGHT. THIS WILL SPREAD A LARGE AREA OF STRONG THUNDERSTORMS OVER THE TAF OUTLOOK AREA...RESULTING IN A PERIOD OF THUNDERSTORMS AT EACH SITE...CAPABLE OF IFR/LIFR CONDITIONS IN HEAVY RAIN...STRONG WINDS OVER 40 KTS...AND POSSIBLY HAIL. THIS IS MOST LIKELY BETWEEN 21Z TODAY AND 03Z SUNDAY...OR MID EVENING. AREAS ALONG AND SOUTH OF INTERSTATE 80 WILL SEE THE HIGHEST THREAT FOR THE DAMAGING WINDS...IMPACTING MLI AND BRL POSSIBLY. OTHERWISE...LOOK FOR SOUTHWEST TO WEST WINDS AROUND 12KTS...TO 20 KTS...WHICH WILL BECOME WEST TO NORTHWEST AFTER 06Z TONIGHT. AFTER STORMS EXIT THE REGION EARLY SUNDAY...VFR WEATHER IS EXPECTED ONCE AGAIN AT ALL SITES. && .DVN WATCHES/WARNINGS/ADVISORIES... IA...NONE. IL...NONE. MO...NONE. && ERVIN/SHEETS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE QUAD CITIES IA IL 335 AM CDT SAT JUN 16 2012 IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007- 009-015>018-024>026-034-035-MOZ009-010-170845- 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- 335 AM CDT SAT JUN 16 2012 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 SCATTERED THUNDERSTORMS WILL DEVELOP LATER THIS AFTERNOON AND EVENING WITH THE POSSIBILITY OF AN ISOLATED OCCURRENCE OF LARGE HAIL OR WIND DAMAGE. AND AS WITH ALL THUNDERSTORMS...LIGHTNING WILL BE A HAZARD. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY HOT WEATHER WILL DEVELOP EARLY NEXT WEEK...ESPECIALLY ON MONDAY WHEN HEAT INDEX VALUES COULD REACH INTO THE UPPER 90S. A LATE WEEK FRONTAL SYSTEM WILL PRODUCE A CHANCE OF THUNDERSTORMS FROM LATE WEDNESDAY INTO EARLY FRIDAY. HOWEVER...IT IS TOO EARLY TO SPECIFY A SEVERE AND/OR HEAVY RAIN THREAT...BUT LIGHTNING WILL CERTAINLY BE A RISK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT LIKELY TODAY OR TONIGHT. 08/WOLF
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
255 PM CDT SAT JUN 16 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0242 PM HAIL 5 WNW LOWELL 40.87N 91.51W
06/16/2012 E1.00 INCH HENRY IA TRAINED SPOTTER
DIME AND QUARTER SIZED HAIL LASTING FOR ABOUT 15 MINUTES.
HE82
&&
SCHULTZPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
303 PM CDT SAT JUN 16 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0216 PM HAIL NNW HILLSBORO 40.84N 91.71W
06/16/2012 M0.25 INCH HENRY IA TRAINED SPOTTER
LASTED FOR 5 TO 10 MINUTES AND ENDED AT 216PM.
0301 PM HAIL 3 SE NEW LONDON 40.90N 91.37W
06/16/2012 M0.25 INCH DES MOINES IA PUBLIC
HAIL BEGAN TO FAIL AT 301PM.
&&
DCPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
327 PM CDT SAT JUN 16 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0322 PM HAIL BLUE GRASS 41.51N 90.76W
06/16/2012 M0.25 INCH SCOTT IA NWS EMPLOYEE
PEA SIZED HAIL RELAYED BY NWS EMPLOYEE
&&
SCHULTZPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
438 PM CDT SAT JUN 16 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0436 PM HAIL 1 NW CANTRIL 40.66N 92.08W
06/16/2012 M0.75 INCH VAN BUREN IA TRAINED SPOTTER
PEA TO PENNY SIZED HAIL FELL FOR 10 MINUTES.
&&
DCPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
511 PM CDT SAT JUN 16 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0436 PM TSTM WND DMG BATAVIA 40.99N 92.17W
06/16/2012 JEFFERSON IA LAW ENFORCEMENT
REPORTS OF SEVERAL TREES DOWN IN TOWN.
0508 PM TSTM WND DMG 3 E PACKWOOD 41.13N 92.02W
06/16/2012 JEFFERSON IA TRAINED SPOTTER
SEVERAL 3 INCH DIAMETER TREE LIMBS DOWN
&&
DCPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
514 PM CDT SAT JUN 16 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0500 PM TSTM WND DMG RICHLAND 41.19N 92.00W
06/16/2012 KEOKUK IA LAW ENFORCEMENT
HIGH WINDS AND TREES REPORTED DOWN IN RICHLAND.
&&
DLSThe Quad Cities radar (KDVN), 150 km away, was scanning. The volume nearest the first event began at 22:14 UTC.
3 thunderstorm wind, 1 hail. Local standard time, as filed.
Wind gusts estimated to be 70 mph destroyed a machine shed at the intersection of State Highway 81 and County Road V about 1 mile north northeast of Anson, MO at 514 pm CDT June 16.
Wind gusts estimated to be 60 mph broke a six inch limb off of a pear tree about 4 miles west northwest of Anson, MO at 518 pm CDT June 16.
Wind gusts estimated to be 60 mph were observed about 4 miles west northwest of Anson, MO at 526 pm CDT June 16.
Nickel sized hail fell about 4 miles west northwest of Anson, MO at 526 pm CDT June 16.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2012Every state in 2012This day in weather historyWarnings in Missouri, June 2012
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: 392630, 392631, 392632, 392633.