Strong winds developed behind a line of thunderstorms that moved across parts of central Illinois during the morning hours of March 11th. A large tree was blown down onto a house in Pontiac damaging the roof and part of one wall.
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The episode as NWS LOT wrote it up.
Strong winds developed behind a line of thunderstorms that moved across parts of central Illinois during the morning hours of March 11th. A large tree was blown down onto a house in Pontiac damaging the roof and part of one wall.
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 Mar 11, 5:37 AM CST, 1 hour 8 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 537 AM CST THU MAR 11 2010 .DISCUSSION... 340 AM CST ACTIVE WEATHER PATTERN TO CONTINUE TODAY WITH MAIN FORECAST FOCUS ON CONVECTIVE POTENTIAL LATER THIS AFTERNOON...HYDROLOGIC ISSUES WITH ADDITIONAL RAIN AND RUNOFF FROM SNOWMELT AFFECTING AREA RIVERS...AND THEN THE POTENTIAL FOR ADDITIONAL RAINFALL FRIDAY INTO SATURDAY NIGHT. SFC ANALYSIS AT 08Z THIS MORNING INDICATING WEAK SFC WARM FRONT POSITIONED APPROXIMATELY FROM WEST CENTRAL ILLINOIS EXTENDING NORTHEAST INTO THE FAR SOUTHERN SUBURBS OF CHICAGO. NORTH OF THIS FRONT DID HAVE SOME LOWER VSBYS REPORTED AT UGN LAST EVENING WITH SOUTHEAST WINDS OFF THE LAKE AND COLDER SFC TEMPS IN THE UPPER 30S TO LOWER 40S. VSBYS HAVE BEEN ON AN IMPROVING TREND OVER PAST FEW HOURS...AND IN THE 05Z-07Z TIMEFRAME EVEN SAW THESE VIS IMPROVEMENTS OVER PORTIONS OF SOUTHEAST WISCONSIN...BUT LATEST OBSERVATIONS INDICATE KENW BACK DOWN TO 1/2SM. GIVEN THESE LOWER TRENDS ONCE AGAIN IN SOUTHEAST WISCONSIN...HAVE SOME HESITATION OF CANCELLING THE DENSE FOG ADVISORY FOR MCHENRY/LAKE COUNTIES WHICH IS SET TO EXPIRE AT 15Z. WILL MONITOR FOR TRENDS OVER NEXT HOUR...BUT CURRENT THINKING IS THAT IT IS PROBABLY WISER TO ALLOW THIS ADVISORY TO RUN THROUGH 15Z. REGIONAL RADAR MOSAIC EARLY THIS MORNING INDICATING LARGE AREA OF RAIN EXTENDING FROM SOUTHEAST IOWA INTO THE MID MS RIVER VALLEY. WELL DEFINED UPPER LEVEL SHORT WAVE TROUGH ACROSS NORTHERN MISSOURI INTO WEST CENTRAL ILLINOIS WILL ROTATE CYCLONICALLY BACK TO THE NORTHWEST AROUND PARENT UPPER LOW ACROSS NORTHWEST MISSOURI WHICH WILL ALLOW RAIN AND SOME EMBEDDED THUNDER TO LIFT NORTHWARD THROUGH APPROXIMATELY SOUTHWESTERN HALF OF CWA EARLY THIS MORNING...AND THEN ACROSS REMAINDER OF NORTHEAST ILLINOIS/NORTHWEST INDIANA LATE THIS MORNING INTO THIS AFTERNOON. BETTER POTENTIAL OF THUNDER THIS MORNING WILL LIKELY REMAIN ACROSS WESTERN HALF OF AREA OUT TOWARD INTERSTATE 39 CORRIDOR WHERE WEAK INSTABILITY AXIS WILL BE RESIDING. SYSTEM WILL BECOME VERTICALLY STACKED TODAY...WITH SFC OCCLUDED FRONT PERHAPS WITH A SLIGHTLY SLOWER PROGRESSION IN LATEST NAM/GFS GUIDANCE...ONLY REACHING INTO FAR SOUTHWEST PORTIONS OF FORECAST AREA BY LATE THIS AFTERNOON. INSPECTION OF WATER VAPOR IMAGERY EARLY THIS MORNING DOES SUGGEST ANOTHER UPSTREAM IMPULSE THAT WILL NEED WATCHING TRACKING THROUGH THE SOUTHERN PLAINS THAT SHOULD PUSH INTO CENTRAL ILLINOIS LATE THIS AFTERNOON/EARLY THIS EVENING. IN TERMS OF SEVERE THREAT...IT STILL APPEARS THIS BOUNDARY WILL SERVE AS THE MAIN FOCUS FOR ANY POTENTIAL THREAT. WITH SKINNY CAPE PROFILE...THERE WILL BE A HIGH SENSITIVITY TO THERMODYNAMICS IN THE LOWEST LEVELS...AND OF COURSE A POTENTIAL OF MORE SFC BASED INSTABILITY IF SOME SUN CAN BE REALIZED THIS AFTERNOON WITH DRIER MID LEVEL PUNCH WORKING INTO WESTERN PORTIONS OF THE AREA. SLIGHTLY BACKED LOW LEVEL FLOW WILL LIKELY EXIST JUST TO THE EAST OF SFC OCCLUDED FRONT THIS AFTERNOON. HOWEVER...MORE PRONOUNCED SHEAR PROFILE WILL LIKELY EXIST THIS MORNING INTO EARLY THIS AFTERNOON...AND DOES APPEAR TO SLACKEN OFF A BUT DURING MAX INSTABILITY WHICH IS ONE FACTOR LIMITING SEVERE THREAT. STILL CANNOT COMPLETELY RULE OUT BRIEF TORNADO THREAT GIVEN ABOVE FACTORS...BUT THREAT DOES APPEAR TO BE LOWER END AT THIS TIME AND IN HWO WILL PROBABLY JUST LIMIT MENTION TO SMALL HAIL THREAT ACROSS THE AREA. ALSO POSSIBLY SOME ISOLATED GUSTINESS WITH CONVECTION THIS AFTERNOON IF SURFACE BASED INSTABILITY CAN BE REALIZED ACROSS SOUTHERN PORTIONS OF CWA. DID KEEP IDEA OF THUNDER MENTION FOR EASTERN HALF OF AREA GOING INTO THIS EVENING WITH NORTHWEST TO SOUTHEAST INSTABILITY AXIS SHIFTING EASTWARD. IN TERMS OF TEMPERATURES TODAY...MADE ONLY VERY MINIMAL TWEAKS TO INHERITED TEMPS...WITH MID TO UPPER 50S NORTH TO LOWER TO MID 60S SOUTH. A COUPLE OF CAVEATS...THE FIRST BEING THE CONTINUED SLIGHTLY COOLER LAKE SIDE TEMPERATURES ACROSS NORTHERN CHICAGO SUBURB NORTHSHORE AREAS...AND IF SOME SUN IS REALIZED ACROSS FAR SOUTHWEST...COULD SEE FAIRLY NARROW AXIS OF EVEN WARMER SFC TEMPS JUST AHEAD OF THE OCCLUDED BOUNDARY. IN TERMS OF HYDROLOGY...SITUATION TODAY AND TONIGHT IS COMPLICATED BY THE LIKELY NONUNIFORM PRECIPITATION DISTRIBUTION DUE TO CONVECTIVE NATURE OF PRECIP ESPECIALLY LATER TODAY. STILL APPEARS GREATEST THREAT AREA FOR RIVER FLOODING NEXT FEW DAYS WILL BE AREAS WHICH HAVE EXPERIENCED GREATER RUNOFF DUE TO RECENT SNOWMELT...ACROSS THE UPPER ROCK...FOX...AND DES PLAINES WATERSHEDS. AFTER INITIAL RAIN BAND MOVES THROUGH THIS MORNING WITH THE STRONGEST SYNOPTIC FORCING ACROSS THESE WATERSHEDS...THE CONFIDENCE IN HEAVIER CONVECTIVE PRECIPITATION THIS AFTERNOON IS MUCH LOWER ACROSS THESE AREAS. THEREFORE...HAVE HELD OFF ON ANY FLOOD HEADLINES AT THIS TIME...AND WILL CONTINUE TO COVER THE THREAT IN THE RIVER FLOOD WARNINGS THAT ARE CURRENTLY IN EFFECT. FOR LATER THIS EVENING...DRY SLOT EXPECTED TO OVERSPREAD THE AREA...WITH MAIN PRECIP FOCUS SHIFTING NORTH AND EAST OF THE AREA WITH MOISTURE BECOMING MORE SHALLOW ONCE AGAIN. WEAK SFC RIDGING WILL BUILD INTO THE AREA BEHIND OCCLUDED FRONT TONIGHT ALLOWING FOR WEAK LOW LEVEL WIND PROFILE. PLENTY OF LOW LEVEL MOISTURE LIKELY LINGERING AND FOG WILL ONCE AGAIN BE POSSIBLE. DID ADD THIS INTO THE FORECAST FOR OVERNIGHT HOURS BUT HELD OFF ON DENSE FOG MENTION AT THIS TIME. AN UNSETTLED PATTERN TO CONTINUE THROUGH THE WEEKEND...AS YET ANOTHER SHORT WAVE ACROSS FOUR CORNERS REGION WILL GET INGESTED INTO UPPER LOW AND WRAP BACK INTO THE AREA. TOUGH TO EXACTLY PINPOINT EXACT TRACK OF THIS DISTURBANCE...BUT MUCH OF FRIDAY COULD ACTUALLY BE DRY BEFORE THIS FORCING WRAPS BACK INTO THE AREA LATE IN THE DAY OR EARLY EVENING. RAIN BECOMES MORE LIKELY AGAIN LATER FRIDAY INTO AT LEAST SATURDAY NIGHT AS UPPER LOW WOBBLES ACROSS THE AREA WITH ADDITIONAL VORTS WRAPPING BACK INTO NORTHERN ILLINOIS. SOME DECENT MOISTURE ADVECTION WILL ACCOMPANY THESE WAVES AND COULD LEAD TO SOME HEALTHY TOTAL RAINFALL AMOUNTS FOR FRI-SAT...POSSIBLY IN EXCESS OF HALF AN INCH...SO WILL HAVE TO MONITOR THIS PERIOD FOR ADDITIONAL RIVER FLOODING THREATS. UPPER LOW TO FINALLY MOVE OUT OF THE AREA SUNDAY WITH UPPER RIDGING BUILDING ACROSS UPPER MIDWEST INTO NORTHERN GREAT LAKES PROVIDING SOME DRY WEATHER FOR LATE WEEKEND/EARLY NEXT WEEK. THE GOOD NEWS IS THAT THIS RIDGING BUILDING IN FOR MIDDLE OF NEXT WEEK SHOULD PREVENT ANY SIGNIFICANT COLD AIR INTRUSIONS AND KEEP TEMPERATURES AT OR ABOVE NORMAL. MARSILI && .AVIATION... 1200 UTC TAFS... TIMING OF PRECIP BANDS AND THUNDER POTENTIAL MAIN FOCUS OF AVIATION FORECAST THIS MORNING...ALONG WITH EFFECTS ON CEILING AND VIS. SFC LOW OVER SOUTH CENTRAL IA EARLY THIS MORNING...WITH ONE WARM FRONT EXTENDING EAST ALONG IL/WI BORDER. SECOND SFC WARM FRONT LIFTING ACROSS CENTRAL IL AT THIS HOUR...IN ASSOCIATION WITH STRONG MID LEVEL WAVE WRAPPING NORTH ACROSS MISSISSIPPI VALLEY AROUND EAST SIDE OF UPPER LOW. TERMINALS HAVE BEEN ENJOYING LIFE IN THE WARM SECTOR OVERNIGHT...WITH FOG AND LOW CEILINGS CONFINED TO AREAS NORTH OF WARM FRONT ALONG WI BORDER. SFC PRESSURE FALLS ASSOCIATED WITH MID LEVEL WAVE EXPECTED TO MAINTAIN SOUTHEAST LOW LEVEL WINDS ACROSS TAF SITES THIS MORNING...KEEPING LIFR CONDITIONS NORTH OF THE FORECAST AREA. BAND OF CONVECTIVE SHOWERS/THUNDERSTORMS PUSHING NORTH WITH SECOND WARM FRONT HOWEVER...AND THESE EXPECTED TO MOVE INTO THE TERMINALS IN THE NEXT COUPLE OF HOURS. NARROW PLUME OF STEEP MID LEVEL LAPSE RATES/INSTABILITY WITH APPROACHING PRECIP BAND IS PROGGED TO WEAKEN AS IT LIFTS NORTH...THOUGH EXPECT THERE MAY INDEED BE SOME EMBEDDED THUNDER ACROSS TERMINALS THIS MORNING. SOME WEAKENING OF RADAR RETURNS NOTED ACROSS NORTHERNMOST CELLS SO HAVE LIMITED TAF MENTION TO CB CLOUD REFERENCE AT THIS TIME. APPEARS THERE WILL BE SOMEWHAT OF A BREAK BY EARLY AFTERNOON AS INITIAL WAVE LIFTS NORTH. GUIDANCE CONSISTENT IN CONTINUING TO LIFT SERIES OF VORT LOBES NORTH INTO THIS EVENING HOWEVER...AND WITH MOIST LOW LEVELS AND CONDITIONALLY UNSTABLE CONDITIONS IN VICINITY OF APPROACHING WARM/OCCLUDED FRONT LATER THIS AFTERNOON AND EVENING HAVE MAINTAINED A VCTS MENTION WITH ANOTHER ROUND OF SHOWERS LATE AFTERNOON/EVENING. MINOR CONCERN AT THIS DISTANCE IS POTENTIAL FOR FOG TO DEVELOP TONIGHT IN WEAK/BAGGY GRADIENT IN VICINITY OF OCCLUSION. HAVE INDICATED MVFR RESTRICTION FOR NOW...BUT MORE DETAIL CAN BE ADDED LATER. WINDS EXPECTED TO REMAIN SOUTHEAST FOR DURATION. SOME GUSTINESS NEAR 20 KTS POSSIBLE AT TIMES LATER THIS MORNING/AFTERNOON...LIKELY MODULATED BY CONVECTIVE SHOWERS. RATZER && .MARINE... 255 AM CST NOT MUCH CHANGE IN MARINE CONCERNS FOR THIS FORECAST PERIOD. LOW PRESSURE LIFTING FROM MISSOURI IN TO IOWA TODAY AND DEEPENING SLIGHTLY WILL TIGHTEN GRADIENT AND INCREASE EAST/NORTHEAST WINDS ACROSS LAKE TODAY...BEFORE LOW WEAKENS/FILLS AND ALLOWS GRADIENT TO RELAX ACROSS THE SOUTHERN PARTS OF THE LAKE TONIGHT. WEAKENING LOW THEN GETS ABSORBED BY NEW AREA OF LOW PRESSURE DEVELOPING OVER OHIO VALLEY ON FRIDAY...WITH NEW CENTER FORMING ACROSS EAST CENTRAL IL/IN BY FRIDAY EVENING. THIS WILL SET UP RATHER PROLONGED PERIOD OF EAST/NORTHEAST FLOW WITH STRONGEST GRADIENT GENERALLY ACROSS NORTHERN 2/3 OF LAKE INTO THE WEEKEND. LOW WILL THEN PULL OFF TO THE EAST ALLOWING WINDS TO DIMINISH GRADUALLY SUNDAY/MONDAY. WHILE SOME GUSTS COULD APPROACH 30 KTS ON THE NORTH END OF THE LAKE...OVERALL GUIDANCE CONTINUES TO SUPPORT MORE OF A 15-25 OR 20-25 KT SUSTAINED WIND FORECAST. NOT MUCH COLD AIR COMING IN BEHIND DEPARTING LOW...WHICH ALSO FAVORS KEEPING 25 KTS AT THIS TIME. OTHER CONCERN HAS BEEN DENSE FOG ESPECIALLY OVER CENTRAL LAKE MICHIGAN IN MOISTURE GRADIENT NORTH OF WARM FRONT. THIS LIKELY TO REMAIN A PROBLEM THROUGH THIS MORNING...AND AGAIN TONIGHT...BEFORE DRIER NORTHEAST FLOW REALLY TAKES HOLD ON FRIDAY. RATZER && .LOT WATCHES/WARNINGS/ADVISORIES... IL...DENSE FOG ADVISORY...ILZ005-ILZ006 UNTIL 9 AM THURSDAY. IN...NONE. LM...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 433 AM CST THU MAR 11 2010 ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019- 121045- 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- 433 AM CST THU MAR 11 2010 /533 AM EST THU MAR 11 2010/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS... NORTHEAST ILLINOIS AND NORTHWEST INDIANA. .DAY ONE...TODAY AND TONIGHT. SOME PATCHY FOG IS POSSIBLE THIS MORNING ACROSS FAR NORTHEAST ILLINOIS. SOME LOCALLY DENSE FOG IS ALSO POSSIBLE THROUGH MID MORNING. AN AREA OF SHOWERS AND EMBEDDED THUNDERSTORMS ACROSS CENTRAL ILLINOIS WILL LIFT NORTHWARD INTO NORTHERN ILLINOIS AND NORTHWEST INDIANA THIS MORNING. NO SEVERE WEATHER IS EXPECTED. A SURFACE FRONT IS EXPECTED TO MOVE INTO WEST CENTRAL ILLINOIS THIS AFTERNOON...AND APPROACH NORTH CENTRAL ILLINOIS LATE THIS AFTERNOON...AND THEN MOVE ACROSS FAR NORTHEAST ILLINOIS AND NORTHWEST INDIANA EARLY THIS EVENING. SHOWERS AND THUNDERSTORMS MAY DEVELOP ALONG THE FRONT THIS AFTERNOON AND EARLY THIS EVENING. A FEW OF THE STORMS MAY PRODUCE SOME SMALL HAIL. SOME WIND GUSTS TO 45 MPH ARE ALSO POSSIBLE...MAINLY SOUTH OF INTERSTATE 80 WHERE THERE IS A GREATER POTENTIAL FOR NEAR SURFACE BASED STORMS. WHILE THUNDERSTORMS ARE EXPECTED TO GENERALLY REMAIN BELOW SEVERE LEVELS...AN ISOLATED SEVERE STORM CANNOT BE RULED OUT THIS AFTERNOON ESPECIALLY SOUTH OF INTERSTATE 80. RAINFALL AMOUNTS TODAY WILL VARY ACROSS THE AREA...ALTHOUGH SOME HEAVIER RAIN AMOUNTS IN EXCESS OF A HALF AN INCH ARE POSSIBLE THIS AFTERNOON INTO THIS EVENING WITH THE HEAVIER SHOWERS AND THUNDERSTORMS. THIS NEW RAINFALL COMBINED WITH ELEVATED RIVER LEVELS FROM RECENT SNOW MELT WILL RESULT IN THE POSSIBILITY OF SOME FLOODING DEVELOPING ON AREA RIVERS OVER THE NEXT FEW DAYS...PARTICULARLY ON THE DES PLAINES AND PECATONICA RIVERS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. ADDITIONAL UPPER LEVEL DISTURBANCES WILL BRING MORE RAIN TO THE AREA FRIDAY AFTERNOON THROUGH SATURDAY NIGHT. THIS ADDITIONAL RAIN COMBINED WITH RUNOFF FROM RECENT SNOWMELT WILL RESULT IN A POTENTIAL OF SOME ADDITIONAL RIVER FLOODING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. HOWEVER...AN ISOLATED SEVERE STORM IS POSSIBLE THIS AFTERNOON MAINLY SOUTH OF INTERSTATE 80. && COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO LMZ740>745-121045- 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- 433 AM CST THU MAR 11 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS NEARSHORE WATERS OF LAKE MICHIGAN AND THE INDIANA NEARSHORE WATERS OF LAKE MICHIGAN. .DAY ONE...TODAY AND TONIGHT. SOME LOCALIZED DENSE FOG IS POSSIBLE EARLY THIS MORNING MAINLY ACROSS THE FAR NORTHEAST ILLINOIS NEARSHORE WATERS. THERE IS A CHANCE OF THUNDERSTORMS TODAY INTO THIS EVENING. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. HAZARDOUS WAVES FOR SMALL CRAFT ARE POSSIBLE FOR THE ILLINOIS NEARSHORE WATERS FRIDAY NIGHT INTO SATURDAY. && COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868- 870-872-874-876-878-121045- 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 TOW 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- 433 AM CST THU MAR 11 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE MICHIGAN. .DAY ONE...TODAY AND TONIGHT. AREAS OF DENSE FOG ARE POSSIBLE THIS MORNING. THERE IS A CHANCE OF THUNDERSTORMS ACROSS FAR SOUTHERN LAKE MICHIGAN THIS AFTERNOON AND EARLY THIS EVENING. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. && COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO MARSILI
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
639 AM CST THU MAR 11 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0635 AM HAIL 4 WNW BOSWELL 40.54N 87.45W
03/11/2010 E0.25 INCH BENTON IN CO-OP OBSERVER
&&
BNThe national radar mosaic for the moment the first event began.
1 strong wind. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2010Every state in 2010This day in weather historyWarnings in Illinois, March 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: 221183.