Gradient wind gusts estimated to be 55 mph blew down some 6 to 8 inch diameter tree limbs about 5 miles southwest of Vinton, IA around 347 pm June 10.
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The episode as NWS DVN wrote it up.
Gradient wind gusts estimated to be 55 mph blew down some 6 to 8 inch diameter tree limbs about 5 miles southwest of Vinton, IA around 347 pm June 10.
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 10, 2:18 PM CST, 6 hours 29 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE QUAD CITIES IA IL 318 PM CDT THU JUN 10 2010 .SYNOPSIS... AN ACTIVE AND MORE AMPLIFIED UPPER PATTERN CONTINUES TO DEVELOP WITH 12Z ANALYSIS INDICATING FALLING HTS OVER WESTERN CONUS AND A FLAT RIDGE OVER THE CENTRAL CONUS BUILDING EASTWARD. A MID LEVEL VORT PASSING THROUGH THIS RIDGE...INDICATED OVER CENTRAL NEB AT 12Z WAS HELPING DRIVE A STUBBORN MCS...WHOSE REMNANTS WERE PUSHING INTO THE WESTERN AND SW CWA THIS AFTERNOON. THIS MCS WAS ON THE NOSE OF THE H8 WARM FRONT AND STRONG THETAE ADVECTION...AND ALONG THE EDGE OF A THE CAP AT H7. MSAS AT 19Z INDICATED THE WARM FRONT AND LEADING EDGE OF DEWPOINTS IN THE UPPER 60S TO LOW 70S AS CLOSE AS A LINE FROM FAR SE NEB THROUGH KIRKSVILLE TO CENTRAL IL. IN OUR CWA NORTH OF THIS BOUNDARY...CLOUD COVER FROM THE MCS HAS HELD TEMPERATURES IN THE 70S ACROSS THE NORTH...WHILE THINNER CLOUDS HAVE WARMED THE SE INTO THE LOWER 80S. A PRESSURE RISE/FALL COUPLET AND MESO HIGH ASSOCIATED WITH THE MCS WAS RESULTING IN VERY STRONG SURFACE WINDS IN CENTRAL IA...WHICH WILL HAVE TO BE MONITORED IN THE SHORT TERM AS THE ENTIRE SYSTEM MIGRATES E-SE THIS EVENING. && .SHORT TERM...TONIGHT AND FRIDAY... MAIN CHALLENGE IS WHERE THE NEXT MCS WILL FORM AND THE LARGE IMPACT IT WILL HAVE ON TEMPERATURES AND RAIN COVERAGE. MODELS CONTINUE TO HAVE A VERY POOR HANDLE ON THESE SYSTEMS...WITH THIS MORNING/S DEPICTED TOO FAR TO THE NORTH AND SUSPECT THIS MAY BE THE CASE AGAIN WITH THE NEXT ROUND TONIGHT INTO FRIDAY. THE SURFACE WARM FRONT WILL CONTINUE TO TRY TO EDGE NORTH THROUGH THE AREA...ONCE THE MESOSCALE EFFECTS OF THE CURRENT MCS DISSIPATE. OVERALL THINKING IS THAT THIS MAY DELAY THE NORTHWARD MIGRATION OF THE FRONT AT THE SURFACE... WHILE ALOFT...THE H8 WARM FRONT FROM THE DAKOTAS THROUGH FAR WESTERN IA TO SRN IL AT 12Z WILL LIKELY MAKE PROGRESS AND FOCUS THE NOCTURNAL CONVECTION FURTHER NORTH THAN LAST NIGHT. THE RESULTING MCS WOULD THEN TRACK E-SE INTO AT LEAST THE NRN CWA LATE NIGHT INTO FRIDAY MORNING AND HAVE CHANCE POPS FOR THIS POTENTIAL THERE. DURING THE DAY...THE GFS BRINGS A WARM CAP AT H7 NORTHEAST OVER THE AREA TO SUPPRESS ANY FURTHER CONVECTION...BUT THE NAM HAS THE EDGE OF THE CAP RIGHT OVER THE AREA. WITH UNCERTAINTY IN THUNDERSTORM COVERAGE AND CLOUD COVER...HAVE LOWERED MAX TEMPERATURES TO NEAR OR BELOW GUIDANCE WITH MID AND UPPER 80S. ..SHEETS.. .LONG TERM...FRIDAY NIGHT THROUGH THURSDAY... IT IS A DIFFICULT...LOW CONFIDENCE FORECAST TODAY...WITH THE MAIN FOCUS BEING ON THUNDERSTORM CHANCES AND TEMPERATURES THROUGH THE PERIOD. WITH THE PROBLEMS GOING ON IN THE MODELS IN THE CURRENT PERIOD...DOUBT IS CAST UPON THE ENTIRE 7 DAY FORECAST...AND WOULD NORMALLY MAKE FEW...IF ANY CHANGES UNTIL WE HAD A BETTER TREND. THAT SAID THOUGH...HAVE BEEN FORCED TO ADD IN POPS TO NEARLY THE ENTIRE EXTENDED PERIOD...IN PART DUE TO THESE UNCERTAINTIES. FRIDAY NIGHT THROUGH SATURDAY NIGHT THE SURFACE BOUNDARY SLOWLY SAGS SOUTHEAST ACROSS IOWA...WITH SOME UPPER LEVEL IMPULSES AND SURFACE WAVES GENERATING ROUNDS OF SHOWERS AND THUNDERSTORMS THROUGH THE PERIOD. EXPECT MCS DEVELOPMENT OUT OVER THE PLAINS AND NEAR THE BOUNDARY EACH NIGHT...WHICH WILL ROLL EAST ACROSS IOWA OR NORTHERN MISSOURI AND THEN AFFECT ALL OR A PORTION OF THE FORECAST AREA DURING THE DAY. WE WERE ALREADY CARRYING SOME POPS FOR THESE PERIODS...BUT HAVE RAISED THEM AS THE CONFIDENCE HERE IS RISING. HOT TEMPERATURES FOR THIS PERIOD ARE BEGINNING TO LOOK A LITTLE DOUBTFUL. IF THE CAP CAN HOLD AND WE DO NOT GET THUNDERSTORMS...LOW TO MID 90S ARE NOT OUT OF THE QUESTION. BUT IF WE HAVE YET ANOTHER MCS ROLLING ACROSS THE AREA WE WILL BE ON THE COOL SIDE OF THE 80S. SUNDAY THERE MIGHT BE A QUIET PERIOD BETWEEN ROUNDS OF THUNDERSTORMS...BUT GIVEN THE MODEL UNCERTAINTY HAVE ELECTED TO CARRY SOME LOW END POPS...AND HAVE KEPT TEMPERATURES ON THE COOL SIDE IN CASE OF ANOTHER FLIP-FLOP. ONE OF THE SIGNIFICANT CHANGES TO THE FORECAST IS ADDING POPS TO MONDAY AND EARLY TUESDAY...AND A SLIGHT WARMING UP OF TEMPERATURES. THE MODELS HAD ALREADY BEEN TRENDING WEAKER WITH THE SURFACE RIDGE THAT BUILDS INTO THE UPPER MIDWEST...BUT NOW THE 12Z RUNS WEAKEN IT EVEN MORE...AND ALLOW THE SURFACE BOUNDARY TO STAY CLOSER TO OUR AREA...AND EVEN RIDE A SURFACE WAVE ALONG IT TO GENERATE WHAT MAY BE A SIGNIFICANT QPF EVENT IN THE FORECAST AREA MONDAY AND MONDAY NIGHT. THE SURFACE WAVE IS BEING DRIVEN BY AN EJECTION OF ENERGY OUT OF WHAT WAS A DEEP UPPER TROUGH OUT OVER THE ROCKIES OVER THE WEEKEND. TIMING IS QUITE DIFFERENT ON THE MODELS...BUT HAVE USED THE ECMWF MORE FOR ITS CONSISTENCY WITH THIS FEATURE ON THE LAST COUPLE RUNS. THE LONGWAVE TROUGH OUT OVER THE ROCKIES GETS A FRESH INJECTION OF ENERGY AS A WAVE MOVES THROUGH IT MIDWEEK. IT EVENTUALLY GENERATES ANOTHER SURFACE LOW OVER THE HIGH PLAINS...WHICH THEN MOVES TO THE NORTHEAST...AND PUSHES BOUNDARIES ACROSS THE CWA WEDNESDAY NIGHT THROUGH THURSDAY. HAVE INCLUDED YET MORE PRECIPITATION CHANCES IN THIS TIME RANGE...ALONG WITH SEASONABLY WARM TEMPERATURES. ..LE.. && .AVIATION... LINE OF THUNDERSTORMS MOVING THROUGH EASTERN IA WILL PASS THROUGH ALL TERMINALS BY 01Z THIS EVENING. THESE STORMS WILL PRODUCE BRIEF MVFR CONDITIONS DUE TO BOTH LOW CIGS AND VSBYS...AND WILL CONTAIN VARIABLE WINDS GUSTING FROM 15 TO 25KTS. THERE IS A POTENTIAL FOR STRONG SE WINDS CURRENTLY OVER CENTRAL IA BEHIND THIS COMPLEX TO TRANSLATE EAST TO AFFECT THE TERMINALS THIS EVENING...BUT CERTAINTY NOT HIGH ENOUGH TO INCLUDE IN FORECASTS AND WILL BE MONITORED CLOSELY. FOLLOWING THUNDERSTORMS THIS EVENING AND OVERNIGHT...VFR CONDITIONS ARE EXPECTED TO GRADUALLY WORSEN TO MVFR DUE TO LOWERING CIGS AS A WARM FRONT LIFTS NORTHEAST ACROSS THE AREA. THERE IS ALSO A POSSIBILITY OF ANOTHER LARGE COMPLEX OF THUNDERSTORMS TO DEVELOP OVER THE PLAINS AND MIGRATE EAST TO SOUTHEAST TO AFFECT THE TERMINALS LATE NIGHT INTO FRIDAY. HOWEVER...THE CONFIDENCE IN THE TIMING AND PLACEMENT OF THESE THUNDERSTORMS IS TOO LOW TO INCLUDE IN THE FORECASTS. ..SHEETS.. && .DVN WATCHES/WARNINGS/ADVISORIES... IA...NONE. IL...NONE. MO...NONE. && SHEETS/LE
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE QUAD CITIES IA IL 434 AM CDT THU JUN 10 2010 IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007- 009-015>018-024>026-034-035-MOZ009-010-110945- 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- 434 AM CDT THU JUN 10 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 THERE IS A SLIGHT CHANCE OF THUNDERSTORMS TODAY AND TONIGHT MAINLY WEST OF THE MISSISSIPPI RIVER. SEVERE WEATHER IS NOT EXPECTED. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THERE WILL BE A CHANCE OF THUNDERSTORMS FRIDAY NIGHT THROUGH SATURDAY NIGHT AS A COLD FRONT SLOWLY APPROACHES THE REGION. THE STORM PREDICTION CENTER HAS PLACED THE ENTIRE OUTLOOK AREA IN A SLIGHT RISK FOR SEVERE THUNDERSTORMS ESPECIALLY FRIDAY NIGHT. THE MAIN THREATS WILL BE DAMAGING WINDS AND LARGE HAIL. VERY WARM TO HOT WEATHER CAN ALSO BE EXPECTED FRIDAY AND SATURDAY. ACTUAL TEMPERATURES WILL BE AROUND 90...COMBINED WITH HIGH HUMIDITY...WILL RESULT IN HEAT INDICIES IN THE MID TO UPPER 90S. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. HAASE
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
350 PM CDT THU JUN 10 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0347 PM NON-TSTM WND GST 5 SW VINTON 42.11N 92.09W
06/10/2010 E55 MPH BENTON IA TRAINED SPOTTER
SPOTTER ALSO REPORTED 6 TO 8 INCH DIAMETER TREE BRANCHES
DOWN.
&&
MIKEZSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
355 PM CDT THU JUN 10 2010
IAZ040-041-051>053-063-064-076-102145-
DELAWARE IA-BUCHANAN IA-JONES IA-BENTON IA-LINN IA-IOWA IA-JOHNSON IA-
KEOKUK IA-
355 PM CDT THU JUN 10 2010
...STRONG GUSTY WINDS TO AFFECT THE AREA...
STRONG GUSTY WINDS FOLLOWING AN AREA OF SHOWERS AND THUNDERSTORMS
WILL CONTINUE FOR AN HOUR OR SO THIS EVENING. WIND GUSTS OF 45 TO
55 MPH ARE EXPECTED FOR A SHORT PERIOD OF TIME...AND WILL THEN
SLOWLY DIMINISH.
THESE STRONG WIND GUSTS MAY CAUSE SOME LOCALIZED DAMAGE TO
TREES...AND BLOW AROUND OTHER LIGHTWEIGHT UNSECURED OBJECTS. IT
WILL ALSO MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE
VEHICLES.
&&
LAT...LON 4152 9239 4151 9231 4229 9231 4230 9207
4264 9209 4265 9114 4229 9130 4229 9137
4214 9137 4152 9167 4149 9240
LESPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
507 PM CDT THU JUN 10 2010
IAZ042-053-054-065>068-078-ILZ001-002-007-009-015-016-102300-
DUBUQUE IA-JACKSON IA-JONES IA-CLINTON IA-CEDAR IA-SCOTT IA-
MUSCATINE IA-LOUISA IA-JO DAVIESS IL-STEPHENSON IL-CARROLL IL-
WHITESIDE IL-ROCK ISLAND IL-HENRY IL-
507 PM CDT THU JUN 10 2010
...GUSTY NON-THUNDERSTORM WINDS MAY AFFECT AREA UNTIL 6 PM...
STRONG GUSTY WINDS AFTER THE PASSING OF AN AREA OF SHOWERS AND
THUNDERSTORMS WILL CONTINUE FOR 30 MINUTES OR SO THIS EVENING.
WIND GUSTS OF 35 UP TO 45 MPH ARE EXPECTED FOR A SHORT PERIOD OF
TIME...AND WILL THEN SLOWLY DIMINISH.
THESE STRONG WIND GUSTS MAY CAUSE SOME LOCALIZED DAMAGE TO
TREES...AND BLOW AROUND OTHER LIGHTWEIGHT UNSECURED OBJECTS. IT
WILL ALSO MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE
VEHICLES.
&&
LAT...LON 4255 9064 4251 9062 4251 9020 4248 8978
4154 8996 4138 9085 4133 9139 4256 9080
NICHOLSThe national radar mosaic for the moment the first event began.
1 strong wind. Local standard time, as filed.
Gradient wind gusts estimated to be 55 mph blew down some 6 to 8 inch diameter tree limbs about 5 miles southwest of Vinton, IA around 347 pm June 10.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Iowa in 2010Every state in 2010This day in weather historyWarnings in Iowa, 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: 238739.