A weak front pushed across northeast Iowa and far southwest Wisconsin sparking some thunderstorms along the Highway 30 corridor during the afternoon and evening hours of June 16th. One of the storms produced damaging winds around 5:20 pm, downing some tree branches in Olin, IA.
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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 weak front pushed across northeast Iowa and far southwest Wisconsin sparking some thunderstorms along the Highway 30 corridor during the afternoon and evening hours of June 16th. One of the storms produced damaging winds around 5:20 pm, downing some tree branches in Olin, IA. Frequent lightning was also noted with the storms, which stuck a transformer and damaged a television, telephones, a refrigerator, and a welder. A tree was also stuck by lightning, splitting it in half.
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, 2:00 PM CST, 2 hours 18 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE QUAD CITIES IA IL 300 PM CDT SAT JUN 16 2007 .SYNOPSIS... OUTFLOW BOUNDARY EXTENDS FROM CENTRAL IA INTO NORTHWEST IL ROUGHLY FROM NORTH OF KDSM TO NEAR KCWI AND KFEP AT 19Z. BOUNDARY WELL DEPICTED BY ARCING BAND OF SCT TSTMS...WHICH CONTINUE TO SAG S/SE ALONG WITH THE OUTFLOW. MEANWHILE FURTHER NORTH...SOMEWHAT DIFFUSE QUASI STATIONARY FRONT DRAPED FROM SOUTHERN SD THROUGH FAR NORTHERN IA INTO SOUTH CENTRAL WI. WINDS BEGINNING TO BACK TO SE ON WESTERN FLANK OF BOUNDARY IN RESPONSE TO INCREASING WARM ADVECTION AHEAD OF VIGOROUS UPPER LOW SHIFTING EASTWARD FROM THE PACIFIC NORTHWEST INTO THE NORTHERN ROCKIES. ADDITIONAL CONVECTION NOTED OVER PORTIONS OF EASTERN SD AND SOUTHWEST MN AHEAD OF MID LEVEL SHORTWAVE AS IT TRAVERSES EASTBOUND ON EDGE OF MAIN WESTERLIES WHICH HAVE FLATTENED UPPER RIDGE OVER MIDWEST LEADING TO MORE DIFFLUENT FLOW ALOFT OVERHEAD. ..05.. && .SHORT TERM...TONIGHT AND SUNDAY... STATIONARY FRONT TO OUR NORTH TO EVENTUALLY RETURN NORTH AS WARM FRONT LATER TONIGHT THROUGH SUN IN INCREASING WARM ADVECTION REGIME IN ADVANCE OF NORTHERN ROCKIES UPPER LOW. ISOLD-SCT THUNDERSTORMS WILL PERSIST TIL SUNSET... WITH BEST COVERAGE IMMEDIATELY BEHIND OUTFLOW OR BETWEEN HWY 30 AND HWY 34... AS BOUNDARY SAGS SOUTH NEAR 15 KTS. OUTFLOW MAY END UP NEAR HWY 34 THIS EVE BEFORE STALLING. PCPN CHCS STILL CONTINUE AFTER SUNSET AND OVERNIGHT NORTH 1/3-1/2 WITH WEAK ISENTROPIC LIFT OVER THE BOUNDARY COUPLED WITH SOME LIFT AHEAD OF APPROACHING MID LEVEL SHORTWAVE. BRUNT OF CONVECTION SHOULD BE FOUND OVER THE DAKOTAS INTO MN NORTH OF SFC FRONT WITHIN ELEVATED MOISTURE AXIS ON NOSE OF LLVL JET. AS FOR MIN TEMPS... WENT WITH PERSISTENCE PLUS 1-2 DEGS MOST LOCATIONS WITH MOISTURE POOLING ALONG BOUNDARIES AND A BIT MORE CLOUD COVER. SUNDAY...INTRODUCED SMALL POPS MAINLY NORTHEAST IA INTO NORTHWEST IL DURING MORNING WITH ISENTROPIC LIFT/WARM ADVECTION NORTH OF SFC BOUNDARY /OUTFLOW/. OTHERWISE...MORE OF THE SAME...HEAT AND HUMIDITY THOUGH WE WILL BE ADDING WIND. GUSTY SOUTH TO SOUTHWEST WINDS WILL DEVELOP AS THE DAY PROGRESSES WITH DEEP MIXING...WHICH WILL HELP BOOST TEMPS IN THE L/M 90S WITH SUN/CLOUD MIX. NAM FCST SOUNDINGS SUPPORT MIXING TO NEAR OR JUST ABOVE 675 MB WHICH WOULD YIELD MAXES IN THE RANGE OF 95-97 DEGS FROM MLI TO AWG...FFL AND BRL. AS IT STANDS GOING FCST MAXES ABOVE GUIDANCE BY 2-5 DEGS AND IN THE L/M 90S...WHICH LOOKS GOOD AND MADE ONLY MINOR TWEAKS. .LONG TERM...SUNDAY NIGHT THROUGH NEXT SATURDAY... WARM AND HUMID CONDITIONS EXPECTED SUNDAY NIGHT AS SOUTHERLY WINDS CONTINUE TO PUMP MOISTURE NORTH AHEAD OF THE APPROACHING COLD FRONT. LACK OF ANY COHERENT TRIGGER SUGGESTS THAT MONDAY MORNING SHOULD BE DRY. WINDY CONDITIONS ON MONDAY SHOULD AID IN BOOSTING TEMPS... ESPECIALLY THOSE AREAS THAT SEE SUN THE LONGEST. CONVECTION TO BREAK OUT ACROSS THE AREA MONDAY AFTERNOON AHEAD OF THE FRONT. THERE SHOULD BE A RESPECTABLE LINE OF CONVECTION ASSOCIATED WITH THE FRONT AS IT PASSES THROUGH THE AREA MONDAY NIGHT WITH LINGERING PRECIP TUESDAY MORNING. TUESDAY AFTERNOON THROUGH WEDNESDAY...SPEED/MOISTURE CONVERGENCE ALOFT SUGGEST POTENTIAL FOR SOME ADDITIONAL CONVECTION ALONG/SOUTH OF I-80 TUESDAY AFTERNOON/NIGHT WITH SOME LINGERING CONVECTION POSSIBLE ON WEDNESDAY ALONG/SOUTH OF HIGHWAY 34. WEDNESDAY NIGHT ON...FOR NOW HAVE GONE DRY THE ENTIRE PERIOD. HOWEVER...ALL MODELS HAVE WEST NORTHWEST FLOW WITH WEAK RIPPLES MOVING THROUGH IT. THE ACTUAL STRENGTH OF ANY RIPPLE COULD BE STRONGER THAN PROGGED DUE TO THE MODELS SMOOTHING FEATURES OUT. ANY ONE OF THESE COULD PRODUCE CONVECTION AFTER TOPPING THE WESTERN RIDGE. ..08.. && .AVIATION... OUTFLOW BOUNDARY WILL PUSH THROUGH KMLI LATE THIS AFTN AND NEAR KBRL BY 00Z. ISOLATED TO SCATTERED THUNDERSTORMS WILL BE FOUND NORTH OF THIS BOUNDARY AND THREATEN MAINLY KCID...KDBQ...KMLI TAF SITES THROUGH 01Z. LATER TONIGHT THROUGH SUNDAY MORNING MAY SEE FEW MORE THUNDERSTORMS DEVELOP NEAR KCID AND KDBQ... BUT COVERAGE ANTICIPATED TO BE ISOLD AND PROBABILITY APPEARS TOO LOW TO INCLUDE MENTION IN 18Z TAFS... BUT NEEDS TO BE MONITORED IN SUBSEQUENT ISSUANCES. CIGS EXPECTED TO REMAIN AT VFR LEVELS THROUGH THE PERIOD...BUT VSBYS ARE LIKELY TO DROP INTO MVFR RANGE IN HAZE/FOG LATER TONIGHT TIL MID MORNING ON SUNDAY. && DVN WATCHES/WARNINGS/ADVISORIES... IA...NONE. IL...NONE. MO...NONE. && 05/08
HAZARDOUS WEATHER OUTLOOK...CORRECTED NATIONAL WEATHER SERVICE QUAD CITIES IA IL 453 AM CDT SAT JUN 16 2007 IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007- 009-015>018-024>026-034-035-MOZ009-010-171000- 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- 453 AM CDT SAT JUN 16 2007 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 A WEAK FRONT PUSHING ACROSS NORTHEAST IOWA AND FAR SOUTHWEST WISCONSIN WILL BRING THE CHANCE FOR SOME THUNDERSTORMS ALONG THE HIGHWAY 20 CORRIDOR THIS AFTERNOON AND EVENING. A FEW STORMS MAY MAKE IT EVEN FURTHER SOUTH DOWN TO THE HIGHWAY 30 OR INTERSTATE 80 CORRIDOR DURING THE EVENING PERIOD. LATEST INDICATIONS SUGGEST THAT IF THESE THUNDERSTORMS DO MAKE IT INTO PORTIONS OF THE AREA... THEY WOULD NOT PRODUCE SEVERE WEATHER. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY SCATTERED THUNDERSTORMS WILL BE POSSIBLE OVER THE AREA MONDAY AFTERNOON AND EVENING AHEAD OF A COLD FRONT MOVING THROUGH THE MID MISSISSIPPI VALLEY. THERE WILL BE A THREAT OF SEVERE STORMS MAINLY NORTH OF INTERSTATE 80. ISOLATED TO SCATTERED THUNDERSTORMS WILL BE POSSIBLE OVER MOST OF THE AREA TUESDAY THROUGH THURSDAY. IT IS TO SOON TO DETERMINE IF THESE STORMS WILL POSE A RISK OF SEVERE WEATHER. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED TODAY OR TONIGHT. 12/DLF
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE QUAD CITIES IA IL 350 PM CDT SAT JUN 16 2007 IAZ040>042-051>054-063>068-076>078-ILZ001-002-007-009-015>018-024- 170100- BENTON IA-BUCHANAN IA-BUREAU IL-CARROLL IL-CEDAR IA-CLINTON IA- DELAWARE IA-DUBUQUE IA-HENRY IL-IOWA IA-JACKSON IA-JO DAVIESS IL- JOHNSON IA-JONES IA-KEOKUK IA-LINN IA-LOUISA IA-MERCER IL- MUSCATINE IA-PUTNAM IL-ROCK ISLAND IL-SCOTT IA-STEPHENSON IL- WASHINGTON IA-WHITESIDE IL- 350 PM CDT SAT JUN 16 2007 ...HEAVY DOWNPOURS WITH STRONG GUSTY WINDS POSSIBLE... SCATTERED THUNDERSTORMS WILL PERSIST UNTIL SUNSET. THE STORMS WILL BRING HEAVY DOWNPOURS WITH RAINFALL RATES IN EXCESS OF ONE INCH IN LESS THAN AN HOUR. THIS HEAVY RAIN WILL GREATLY LIMIT VISIBILITIES. THE STRONGEST STORMS WILL ALSO BE CAPABLE OF PRODUCING STRONG GUSTY WINDS OF 40 TO 50 MPH.
The Quad Cities radar (KDVN), 63 km away, was scanning. The volume nearest the first event began at 22:19 UTC.
1 thunderstorm wind, 1 lightning. Local standard time, as filed.
Numerous tree branches were downed by thunderstorm winds in Olin, IA. Time estimated.
A thunderstorm producing frequent lightning moved across Cedar County during the early evening of June 16th. The intense lightning stuck a transformer and damaged a television, telephones, a refrigerator, and a welder. A tree was also stuck by lightning splitting it in half.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Iowa in 2007Every state in 2007This day in weather historyWarnings in Iowa, June 2007
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: 45519, 45529.