A line of thunderstorms moved across northern Illinois producing a swath of wind damage primarily across the northwest and north suburbs of Chicago.
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 LOT wrote it up.
A line of thunderstorms moved across northern Illinois producing a swath of wind damage primarily across the northwest and north suburbs of Chicago.
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 Chicago, IL wrote its last area forecast discussion before the first event at Sep 5, 12:02 PM CST, 1 hour 23 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 102 PM CDT FRI SEP 5 2014 .DISCUSSION... 1142 AM CDT COLD FRONT IS MOVING THROUGH NORTHWESTERN PORTIONS OF THE CWA LATE THIS MORNING AND SHOULD CONTINUE TO MAKE STEADY PROGRESS SOUTHEAST ACROSS THE AREA THIS AFTERNOON. DEVELOPING PRESSURE FALLS OVER IOWA IN ADVANCE OF SHORTWAVE TROUGH OVER NE KS/SE NE WILL PROBABLY RESULT IN FRONT SLOWING DOWN A BIT THIS AFTERNOON. GOES EAST IS IN RAPID SCAN MODE THIS AFTERNOON AND IS NICELY SHOWING SOME ENHANCEMENT TO THE CUMULUS FIELD RIGHT ALONG THE IMMEDIATE FRONTAL BOUNDARY. IN GENERAL THE CUMULUS FIELD ON SATELLITE AND OUT THE WINDOW LOOKS VERY MUSHY AND LACKING VERTICAL GROWTH...LIKELY DUE IN LARGE PART TO THE VERY FORMIDABLE CAP EVIDENT ON DVN/ILX MORNING SOUNDINGS AND STILL PRESENT IN RECENT ACARS SOUNDINGS OUT OF ORD AND MDW. CONTINUED HEATING AND DESTABILIZATION OF THE BOUNDARY LAYER ALONG WITH FORCED ASCENT ALONG THE FRONT SHOULD EVENTUALLY CAUSE CAP TO BUST...BUT LIKELY NOT UNTIL THE FRONT IS AT LEAST TO A CHICAGO TO PERU LINE IF NOT FARTHER SOUTHEAST. WILL BE REWORKING POP GRIDS TO BETTER REFLECT THIS LINE OF THINKING...INCLUDING VERY LITTLE THREAT OF PRECIP OVER NORTHWEST CWA AND STEADILY DECREASING CHANCE FROM THE NORTHWEST SPREADING ACROSS THE AREA THIS AFTERNOON. POST FRONT RAIN STILL A DISTINCT POSSIBILITY THIS EVENING INTO TONIGHT AS AFOREMENTIONED KS/NE SHORTWAVE TRACKS NORTHEAST INTO THE REGION. IZZI //PREV DISCUSSION... 325 AM CDT THE EMPHASIS OF THE FORECAST WAS SPENT ON THE FIRST 24 HOURS WHICH PRESENT THUNDERSTORMS IN THE REGION TODAY...INCLUDING THE POTENTIAL FOR SOME SEVERE STORMS THIS AFTERNOON...AND THEN RAIN CHANCES THROUGH TONIGHT. TODAY... A VERY MILD...MUGGY...AND EVEN BREEZY EARLY MORNING ACROSS THE AREA WITH SOME PARTS OF CHICAGO AT 80 DEGREES AS OF 3 AM. AREA DEW POINTS ARE IN THE MID 70S...MATCHING THAT OF THE GULF SEABOARD THIS MORNING. THIS SURFACE WARM SECTOR IN PLACE IS ASSOCIATED WITH A 1000MB LOW PRESSURE DEPARTING NORTHEASTWARD WITH ITS PARENT UPPER TROUGH ACROSS ONTARIO THIS MORNING. THE ELONGATED SYSTEM COLD FRONT WILL OOZE SOUTHEASTWARD REACHING NORTH CENTRAL IL DURING MID-MORNING AND THE CHICAGO AREA AROUND NOONTIME...WHILE CLEARING THE SOUTHEAST FORECAST AREA BY EARLY THIS EVENING. WHILE THE REGIONAL RADAR THIS MORNING DOES SHOW A DECENT AMOUNT OF CONVECTION IN IA AND EASTERN NE...MUCH OF THAT IS POST FRONTAL. ANY SHOWERS OR STORMS BEFORE NOON WOULD LIKELY BE DUE TO A SUBTLE MOISTENING IN THE VERY UNSTABLE LAYER ALOFT...WHICH THERE IS A LITTLE BIT OF ON IR/11-3.9 MICRON SATELLITE IMAGERY. THIS TYPE OF FORCING WOULD INDICATE ONLY ISOLATED IN COVERAGE IF DEVELOPMENT WERE TO OCCUR. WITH SURFACE HEATING AND ADVECTION OF EVEN HIGHER 0-1KM MIXING RATIOS AHEAD OF THE FRONT DURING THE AFTERNOON...ADAPTED MODEL SOUNDINGS LEAD TO FAIRLY HIGH CONFIDENCE THAT THE CAP WILL BE BREACHED WITH SCATTERED STORMS ALONG THE COLD FRONT. DEPENDING ON THE DEGREE OF HEATING...THIS COULD OCCUR ALREADY BY 12-2 PM. THIS IS MOST FAVORED ALONG AND EAST OF INTERSTATE 55. LOOKING AT HIGH-RES CONVECTIVE MODELS IN AN ENSEMBLE APPROACH /SPC SSEO/...THERE ARE GOOD NEIGHBORHOOD VALUES OF HIGHER UPDRAFT SPEED SUPPORTED BY HIGH INSTABILITY WITH MLCAPE IN EXCESS OF 3000 J/KG. WITH LAGGING UPPER/MID-LEVEL FLOW TO THE FRONT...INSTABILITY WILL BE THE DRIVER OF THESE STORMS AND THEIR INITIAL EVOLUTION. EXPECTING A MODE THUS OF SOMEWHAT SLOW-MOVING CELLS OR MULTI- CELLS WHICH SHOULD EVOLVE SOUTHEASTWARD THROUGH LATE AFTERNOON/EARLY EVENING. A SCATTERED LARGE HAIL AND LOCALIZED FLASH FLOODING THREAT WILL EXIST...AND WITH ANY MULTI-CELLS AN ISOLATED SEVERE WIND THREAT...WITH THE LATTER LOOKING BETTER FURTHER EAST AS STORM ORGANIZATION IS MORE FAVORED. TONIGHT... WHILE THE SURFACE FRONT WILL HAVE CLEARED THE FORECAST AREA BY OR DURING EARLY EVENING...A SECOND STRONG UPPER SHORT WAVE ACROSS CO EARLY THIS MORNING WILL TRACK NORTHEASTWARD ALONG THE 700-500MB BAROCLINIC ZONE. THIS HAS BEEN CONSISTENTLY FORECAST IN THE REGION MY MODELS FOR DAYS AND NOW OBSERVATIONAL SATELLITE TRENDS ARE SUPPORTING THIS. THIS IS AN EARLY SIGN OF THE COOL SEASON...AS THIS TYPE OF FORCING BEGINS TO SHOW UP MORE AND WILL EVENTUALLY REPLACE THE VERTICAL INSTABILITY THAT WE ARE LOOK AT TODAY. BUT NO NEED TO RUSH INTO THAT! SO BACK TO TONIGHT...A VERTICAL FRONTAL CIRCULATION IS FORECAST WHICH WITH MOISTURE TRANSPORT AND SATURATION IN THE MID-LEVELS SHOULD AT LEAST ALLOW LIKELY RAIN IN THE REGION. THERE IS UNCERTAINTY ON HOW FAR NORTH RAIN THIS WILL BE. ITS CERTAINLY PLAUSIBLE THAT EVEN THE NORTHERN CWA GETS INTO THIS...WITH ROCKFORD AND CHICAGO HAVING A FEW HOUR PERIOD OF LIGHT RAIN THIS EVENING INTO EARLY OVERNIGHT. ELEVATED INSTABILITY WILL BE SLOW TO DEPART IN THE SOUTHERN FORECAST AREA SO CONTINUE THUNDER CHANCES WITH MORE OF A MODERATE RAIN THERE. ADDITIONAL RAINFALL AMOUNTS TONIGHT OF OVER ONE HALF INCH ARE FAVORED UNDER ANY MORE SUSTAINED RAIN CORRIDORS THAT SET UP. THIS WEEKEND... NO REAL CHANGES MADE TO THIS PORTION OF THE FORECAST. LINGERING ANAFRONTAL CLOUDS COULD CONTINUE SATURDAY MORNING BUT A CLEAR SKY IS EXPECTED FOR THE REST OF THE WEEKEND. AFTERNOON TEMPERATURES IN THE LOWER TO MID 70S...ABOUT 5 TO 7 DEGREES BELOW NORMAL...ARE FORECAST. SURFACE WINDS SHOULD BECOME CALM EACH LATE EVENING AND WITH DRIER AIR ADVECTION CONTINUING...WE UNDERCUT A MODEL FORECAST BLEND FOR LOWS. SHOULD SEE OUTLYING AREAS REALIZE LOWS IN THE UPPER 40S WITH COOL SPOTS POSSIBLY MID 40S. NEXT WEEK... CONTINUED QUASI-ZONAL UPPER FLOW ACROSS THE NORTHERN U.S. AT THE FAR SOUTHERN BASE OF A COLD CANADIAN TROUGH IS FORECAST NEXT WEEK. RETURN LOW-LEVEL LOW RESUMES EARLY IN THE WORKWEEK...BUT MOISTENING LOOKS SLOW. GIVEN THAT AND THE FACT ANY FORCING MECHANISMS LOOK TO BE LOW AMPLITUDE...SPREAD POPS IN SLOWER THAN GUIDANCE MONDAY NIGHT-TUESDAY NIGHT. NOT SURPRISING TO SEE A LARGE MODEL SPREAD IN SPECIFICS DURING THE MIDDLE OF NEXT WEEK...BUT RIGHT NOW SOMETIME IN THE WEDNESDAY-THURSDAY PERIOD A STRONGER SHORT WAVE TROUGH IS FORECAST TO PASS...WHICH CONCEIVABLY WOULD BRING THE GREATER RAIN CHANCES TO THE REGION. MTF && .AVIATION... //ORD AND MDW CONCERNS...UPDATED 18Z... * ISOLD TSRA THRU EARLY/MID AFTERNOON * MORE WIDESPREAD SHRA/ISOLD TSRA DEVELOP THIS EVENING CONTINUE INTO OVERNIGHT * WIND SHIFT TO NORTHEAST SATURDAY AFTERNOON IZZI //DISCUSSION...UPDATED 18Z... COLD FRONT WILL MOVE ACROSS CHICAGO AREA TERMINALS THIS AFTERNOON RESULTING IN WIND SHIFT TO NORTHWEST. LINE OF STRONG/SEVERE TSRA LIKELY TO ERUPT ALONG THIS FRONT SOUTHEAST OF THE TERMINALS LATE THIS AFTERNOON...HOWEVER FAIRLY STRONG UPPER LEVEL DISTURBANCE OVER SOUTHWEST IOWA IS TRACKING ENE TOWARD THE REGION. ALREADY SEEING SCTD TSRA DEVELOP OVER NW IL IN ADVANCE OF THIS FEATURE AND EXPECT MORE WIDESPREAD SHRA/ISOLD TSRA OVER SOUTHWEST IOWA WEST INTO THE PLAINS TO OVERSPREAD THE REGION EARLY THIS EVENING AND PROBABLY LINGER INTO THE OVERNIGHT HOURS. TSRA CHANCES LOOK HIGHEST EARLY THIS EVENING WITH PRECIP LIKELY TRENDING MORE TOWARD RAIN/SHOWER ACTIVITY LATE IN THE EVENING INTO THE OVERNIGHT. SOME PERIODIC MVFR CIGS ARE POSSIBLE THIS AFTERNOON BUT AS DRIER LOW LEVEL AIR MASS ADVECTS INTO THE AREA WOULD ANTICIPATE A TREND TOWARD MORE VFR CIGS WITH THE RAIN THIS EVENING INTO TONIGHT. RAIN SHOULD SHIFT SOUTHEAST OF THE TERMINALS LATE TONIGHT AND VFR CONDITIONS ARE EXPECTED SATURDAY. NORTHWEST WINDS EXPECTED BEHIND FRONT THIS AFTERNOON...THOUGH PRESSURE FALLS IN ADVANCE OF THE DISTURBANCE OVER IOWA SHOULD RESULT IN A MORE STRAIGHT NORTHERLY WIND FOR A TIME LATE THIS AFTERNOON AND EARLY THIS EVENING WHICH COULD POTENTIALLY RESULT IN A LAKE BREEZE DEVELOPING INTO NORTHEAST ILLINOIS. FOR NOW KEPT WINDS NORTHWEST...BUT WILL MONITOR OBSERVATIONAL TRENDS FOR POSSIBLE INCLUSION OF A PERIOD OF NE WINDS THIS EVENING. NW/NNW WINDS OVERNIGHT INTO SAT MORNING WILL LIKELY SHIFT TO NORTHEAST SATURDAY AFTERNOON WITH LAKE BREEZE PASSAGE. IZZI //ORD AND MDW CONFIDENCE...UPDATED 18Z... * LOW-MEDIUM CONFIDENCE IN TSRA/PRECIP CHANCES AND TIMING * LOW-MEDIUM CONFIDENCE WIND DIRECTION THIS EVENING * HIGH CONFIDENCE IN ALL FORECAST ELEMENTS IZZI //OUTLOOK FOR ORD/MDW FOR 00Z SUNDAY-12Z FRIDAY...UPDATED 12Z... SATURDAY NIGHT THROUGH MONDAY...VFR. SLGT CHC TSRA MONDAY NIGHT. TUESDAY AND WEDNESDAY...CHC OF PERIODIC TSRA. MVFR CIGS PSBL. THURSDAY...CHC OF SHOWERS. MVFR CIGS PSBL. RATZER && .MARINE... 314 AM CDT LOW PRESSURE WAS NORTH OF LAKE SUPERIOR EARLY THIS MORNING...WITH A COLD FRONT TRAILING SOUTHWEST ACROSS WISCONSIN AND EASTERN IOWA. THIS LOW WILL TRACK TO THE NORTHEAST WHILE CONTINUING TO DEEPEN TODAY WHILE THE FRONT PUSHES SOUTHEAST ACROSS THE LAKE THROUGH THIS AFTERNOON. SURFACE PRESSURE FALLS AND A RELATIVELY TIGHT PRESSURE GRADIENT AHEAD OF THE FRONT AND ASSOCIATED WITH THE DEEPENING LOW HAS LED TO SOUTH-SOUTHWEST WINDS IN THE 25-30 KT RANGE OVERNIGHT. WINDS SHOULD GRADUALLY EASE INTO THE 15-25 KT RANGE AS THE GRADIENT WEAKENS IN PROXIMITY TO THE COLD FRONTAL TROUGH LATER THIS MORNING AND THIS AFTERNOON...VEERING TO THE NORTHWEST AND EVENTUALLY NORTH BEHIND THE FRONT TONIGHT. SURFACE HIGH PRESSURE WILL THEN BUILD SOUTHEAST ACROSS THE PLAINS...AND EAST ACROSS THE SOUTHERN GREAT LAKES TONIGHT AND SATURDAY WHILE A SECOND WEAK COLD FRONT SETTLES ACROSS THE NORTHERN LAKES. NORTH-NORTHWEST WINDS ARE EXPECTED TO REMAIN IN THE 15-20 KT RANGE WITH A FEW GUSTS TO 25 KT POSSIBLE INTO EARLY SATURDAY AS COOL AIR BUILDS IN WITH THE HIGH...THEN SLACKEN SATURDAY NIGHT AND SUNDAY AS THE HIGH MOVES EAST ACROSS THE LAKES. BY MONDAY THE HIGH WILL SHIFT OVER THE ST LAWRENCE VALLEY...WHILE LOW PRESSURE DEVELOPS ACROSS THE NORTHERN PLAINS. THIS WILL ALLOW WINDS TO SHIFT BACK TO THE SOUTH EARLY NEXT WEEK...WITH THE PLAINS LOW EVENTUALLY APPROACHING THE GREAT LAKES MID-WEEK. FOR THE ILLINOIS/NORTHWEST INDIANA NEARSHORE WATERS...SOME GUSTS NEAR 30 KT NOTED FROM HIGH-MOUNTED WIND MEASURING EQUIPMENT THIS MORNING BUT WITH RELATIVELY LOW WAVES IN OFFSHORE FLOW. NORTHERLY FETCH LATER TONIGHT AND SATURDAY LOOKS TO PRODUCE MARGINAL SMALL CRAFT ADVISORY CONDITIONS. RATZER && .LOT WATCHES/WARNINGS/ADVISORIES... IL...NONE. IN...NONE. LM...NONE. && VISIT US AT HTTP://WEATHER.GOV/CHICAGO (ALL LOWERCASE) FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT: WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.CHICAGO.GOV WWW.TWITTER.COM/NWSCHICAGO WWW.YOUTUBE.COM/NWSCHICAGO
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 157 PM CDT FRI SEP 5 2014 ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019- 061900- WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-OGLE-LEE-DE KALB-KANE- DUPAGE-COOK-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON- IROQUOIS-FORD-LAKE INDIANA-PORTER-NEWTON-JASPER-BENTON- 157 PM CDT FRI SEP 5 2014 /257 PM EDT FRI SEP 5 2014/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS... NORTHEAST ILLINOIS AND NORTHWEST INDIANA. .DAY ONE...THIS AFTERNOON AND TONIGHT. WEATHER HAZARDS EXPECTED: SCATTERED THUNDERSTORMS...SOME OF WHICH MAY PRODUCE: TORRENTIAL DOWNPOURS AND POSSIBLE LOCALIZED FLASH FLOODING. LOCALLY DAMAGING WINDS TO AROUND 60 MPH. HAIL UP TO THE SIZE OF QUARTERS. AND FREQUENT CLOUD TO GROUND LIGHTNING. AREAS AFFECTED AND TIMING: SCATTERED THUNDERSTORMS WILL DEVELOP THIS AFTERNOON ACROSS NORTHERN ILLINOIS AND SPREAD SOUTH AND EASTWARD INTO AREAS SOUTH OF INTERSTATE 80 AND INTO NORTHWEST INDIANA LATER THIS AFTERNOON AND EARLY THIS EVENING. THE THREAT OF THUNDERSTORMS WILL LINGER THROUGH TONIGHT...MAINLY SOUTH OF INTERSTATE 80. DISCUSSION: A SLOW MOVING COLD FRONT COMBINED WITH UPPER LEVEL DISTURBANCES WILL RESULT IN INCREASING COVERAGE OF THUNDERSTORMS THIS AFTERNOON INTO THIS EVENING. VERY UNSTABLE CONDITIONS AND MODERATE WINDS ALOFT WILL ALLOW SOME OF THE THUNDERSTORMS TO BECOME SEVERE. THE PRIMARY THREAT WILL BE DAMAGING WINDS WITH SOME POTENTIAL FOR LARGE HAIL. IN ADDITION...THE VERY HUMID CONDITIONS WILL ALLOW THE THUNDERSTORMS TO PRODUCE LOCALLY VERY HEAVY RAINFALL AND POSSIBLY SOME LOCALIZED FLOODING. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. DANGEROUS SWIMMING CONDITIONS ARE POSSIBLE AT LAKE MICHIGAN BEACHES...NAMELY ALONG THE INDIANA SHORE...ON SATURDAY. THE WILL BE PERIODIC CHANCES FOR THUNDERSTORMS FROM MONDAY NIGHT THROUGH WEDNESDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED THIS AFTERNOON AND EVENING. && LMZ740>745-061900- WINTHROP HARBOR TO WILMETTE HARBOR- WILMETTE HARBOR TO NORTHERLY ISLAND- NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY- GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY- 157 PM CDT FRI SEP 5 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS NEARSHORE WATERS OF LAKE MICHIGAN AND THE INDIANA NEARSHORE WATERS OF LAKE MICHIGAN. .DAY ONE...THIS AFTERNOON AND TONIGHT. A PERIOD OF THUNDERSTORMS IS LIKELY THIS AFTERNOON AND EARLY EVENING...SOME STORMS MAY BE SEVERE WITH WIND GUSTS OVER 50 KT. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. WAVES HAZARDOUS TO SMALL CRAFT ARE POSSIBLE ALONG MAINLY THE INDIANA SHORE ON SATURDAY. THE WILL BE CHANCES FOR THUNDERSTORMS TUESDAY AND WEDNESDAY. && LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868- 870-872-874-876-878-061900- LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN SOUTH OF A LINE FROM SEUL CHOIX POINT TO THE MACKINAC BRIDGE AND NORTH OF A LINE FROM CHARLEVOIX MI TO SOUTH FOX ISLAND 5 NM OFFSHORE- LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI- LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID LAKE- LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO MID LAKE- 157 PM CDT FRI SEP 5 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE MICHIGAN. .DAY ONE...THIS AFTERNOON AND TONIGHT. THUNDERSTORMS ARE LIKELY THIS AFTERNOON AND EARLY THIS EVENING TODAY. SOME OF THE STORMS MAY PRODUCE GUSTS IN EXCESS OF 30 KNOTS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. THE WILL BE CHANCES FOR THUNDERSTORMS TUESDAY AND WEDNESDAY. && IZZI VISIT US AT HTTP://WEATHER.GOV/CHICAGO (ALL LOWERCASE) FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT: WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.CHICAGO.GOV WWW.TWITTER.COM/NWSCHICAGO WWW.YOUTUBE.COM/NWSCHICAGO
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
216 PM CDT FRI SEP 05 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0200 PM TSTM WND GST DE KALB 41.93N 88.75W
09/05/2014 E60 MPH DE KALB IL TRAINED SPOTTER
EST WIND GUSTS 55-60 MPH. ALSO PEA SIZE HAIL. MINOR
FLOODING ON LINCOLN HWY.
&&
BNPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
220 PM CDT FRI SEP 05 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0207 PM TSTM WND GST DE KALB 41.93N 88.75W
09/05/2014 E50 MPH DE KALB IL TRAINED SPOTTER
1ST REPORT - 2 MILES NE OF NIU CAMPUS E50 MPH GUSTS.
SMALL BRANCHES DOWN. ON CAMPUS M48 MPH GUST.
&&
BNThe Chicago radar (KLOT), 55 km away, was scanning. The volume nearest the first event began at 19:25 UTC.
10 thunderstorm wind. Local standard time, as filed.
Numerous trees and large tree limbs were reported down across portions of Elgin. Approximately a mile northeast of Elgin, trees were uprooted and snapped. Two to three foot diameter trees fell onto homes and cars. Some roads were impassable.
Large tree branches were blown down with several gusts estimated at over 60 mph.
Several trained spotters estimated winds between 50 and 65 mph near Hoffman Estates with a mesonet site measuring 71 mph wind gusts. Tree limbs were blown down. A wooden frame building under construction collapsed near the intersection of Barrington Road and Schaumburg Road.
Large trees were blown down.
A large tree was blown down onto Butterfield Road just north of IL-176.
Trees and large branches were blown down.
A building under renovation collapsed due to severe winds resulting in minor injuries to four workers who were trapped and had to be rescued. Winds were estimated to around 65 mph by a trained spotter at Oakton Community College.
A large tree was blown down striking and killing a bicyclist on a bike trail.
A light pole, multiple trees, and numerous fences were toppled. Tree limbs 15 to 20 feet in length were blown down.
As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.
| Event | Date | Age | Sex | Where | Kind |
|---|---|---|---|---|---|
| Thunderstorm Wind, Cook | 2014-09-05 | 46 | Female | Under Tree | Direct |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2014Every state in 2014This day in weather historyWarnings in Illinois, September 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: 543408, 543412, 543413, 543414, 543415, 543416, 543417, 543418, 543419, 543420.