Severe Thunderstorm Warning 92, NWS Chicago, IL

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
851 PM CDT MON JUN 30 2014

.MESOSCALE DISCUSSION...
850 PM

HAVE COORDINATED WITH THE STORM PREDICTION CENTER AND WILL LIKELY BE
ISSUING A NEW SEVERE THUNDERSTORM WATCH ACROSS THE AREA FOR SECOND
LINE OF AGGRESSIVE STORMS.

REGARDING FLASH FLOODING THREAT...THE NEXT LINE OF STRONG TO SEVERE
STORMS IS MOVING EAST-SOUTHEAST ACROSS NORTH CENTRAL AND WEST
CENTRAL ILLINOIS. THIS IS ON A SUSTAINED COLD POOL THAT HAS
DEVELOPED AHEAD OF THE COLD FRONT. VERY HIGH ABSOLUTE MOISTURE
CONTENT /PWATS OF 1.75+ INCHES/ AND CONTINUED REPLENISHMENT ON
A LOW-LEVEL JET WILL SUSTAIN HEAVY RAINFALL RATES OF ONE TO TWO
INCHES PER 30 TO 60 MINUTES AS THIS COMPLEX MOVES EASTWARD. IN
ADDITION...SEEING SIGNS OF A MESOSCALE WARM-AIR ADVECTION WING
WITH SCATTERED CELLS ACROSS DEKALB AND KANE COUNTIES. THIS COULD
MEAN A STRONGER SIGNAL FOR WEST-TO-EAST ORIENTED CONVECTION WHICH
WOULD FAVOR POSSIBLE FLASH FLOODING POTENTIALLY NEAR THE
INTERSTATE 88 CORRIDOR...AND POSSIBLY INTO PARTS OF THE CHICAGO
METRO. THIS IS ESPECIALLY TRUE CONSIDERING THE EARLIER RAINFALL
TODAY AS WELL AS THE ANTECEDENT WET CONDITIONS IN THE PAST TWO
WEEKS. WILL BE MONITORING CLOSELY AND IF 1. A QUICKER FORWARD
PROPAGATION TO THE COMPLEX IS NOT SEEN AND 2. REPORTS OF FLASH
FLOODING ARE RECEIVED ACROSS WINNEBAGO...OGLE...AND LEE
COUNTIES...THEN WILL LIKELY NOT WAIT LONG FOR FLASH FLOOD WARNING
ISSUANCES FURTHER EAST/SOUTHEAST.

MTF

&&

.DISCUSSION...
117 PM CDT

THIS EVENING/OVERNIGHT...
MAIN CONCERN FOR THIS EVENING THROUGH MIDNIGHT WILL BE ON SEVERE
WEATHER TIMING/COVERAGE/INTENSITY. THE SPC HAS EXPANDED THE ENTIRE
FORECAST AREA INTO THE MODERATE RISK FOR SEVERE WEATHER TODAY...WITH
THE FOCUS BEING ON DAMAGING WINDS IN EXCESS OF 70MPH AND LARGE HAIL.
GIVEN THE HIGH DEW POINTS...AND PWAT VALUES ARND 1.5 TO
1.75"...WHATEVER CONVECTION OCCURS COULD BE VERY EFFICIENT AT
PRODUCING TORRENTIAL DOWNPOURS AND AS SUCH WOULD INTRODUCE A
FLOODING CONCERN DESPITE STORMS FORWARD PROPAGATION. WHILE THE
PROBABILITY IS NOT ZERO FOR AN ISOLATED TORNADO...THE GREATEST FOCUS
FOR THIS WILL BE WELL WEST OF THE FORECAST AREA IN IOWA. IF WINDS
CAN BACK TO THE SOUTHEAST HOWEVER...THIS WOULD INTRODUCE INCREASED
HELICITY TO THE AREA.

THE FOCAL POINT FOR CONVECTION HAS BEEN ON THE ACTIVITY PRESENTLY
ONGOING IN EASTERN NEBRASKA/WESTERN IOWA. VISIBLE IMAGERY HAS A
BOUNDARY DEPICTED ACROSS SOUTHWEST IOWA STRETCHING EAST TO JUST
SOUTH OF MOLINE THEN TURNING SOUTHEAST ACROSS SOUTH CENTRAL IL TO
JUST SOUTH OF TERRE HAUTE IN. ALONG AND SOUTH OF THIS BOUNDARY DEW
PTS ARE GENERALLY IN THE LOW/MID 70S...WHILE TO THE NORTH DEW POINTS
ARE IN THE UPR 60S. THE EXCEPTION IS OVER THE SOUTHERN CWFA WHERE
DEW POINTS HAVE BEEN ABLE TO BUMP BACK INTO THE LOW 70S WITH A
SOUTHERLY WIND. THE WINDS ARE BACKED TO THE SOUTHEAST/EAST EARLY
THIS AFTN OVER SOUTH CENTRAL IOWA...AND WITH THE CIRRUS SHIELD
BEGINNING TO THIN OVER EASTERN IOWA EARLY THIS AFTN...THE ATMOSPHERE
SHUD ONLY FURTHER DESTABILIZE.

HI-RES GUIDANCE CONTINUES TO FOCUS A LINE SEGMENT PUSHING INTO
EASTERN IOWA BY 20-22Z...THEN THERE IS SOME SLIGHT DIFFERENCES ON
HOW THIS FEATURE ARRIVES ACROSS NORTHERN IL/NORTHWEST IN ALONG WITH
TIMING. NONETHELESS...GIVEN THE AFOREMENTIONED BUOYANT ATMOSPHERE
AND UNIDIRECTIONAL MEAN LAYER FLOW...IT DOES SUPPORT THIS LINE OF
CONVECTION THAT ARRIVES ACROSS FAR WESTERN/NORTHWESTERN IL TO MORPH
INTO A BOWING SEGMENT AND POSSIBLY TRANSITION INTO A DERECHO TYPE
EVENT...WHICH WOULD LIKELY BEGIN TO TURN SOUTHEAST ACROSS THE
FORECAST AREA THIS EVENING.

ACTIVITY LEVEL SHOULD QUICKLY LEVEL OFF LATER THIS EVENING...WITH
THE TIMING TO HAVE PUSHED THRU THE CWFA BEFORE MIDNIGHT. THEN THE
DRY SLOT ARRIVES...HOWEVER HAVE OPTED TO HOLD ONTO SOME LINGERING
SHRA/TSRA OVERNIGHT. CONFIDENCE IS RATHER LOW THAT ANY ACTIVITY WILL
BE REMAINING...SO THIS MAY BE ABLE TO BE REMOVED LATER THIS EVENING
AND GO WITH A DRY OVERNIGHT.

TUESDAY THROUGH THURSDAY...
LEADING VORT WILL PIVOT EAST OF THE REGION EARLY TUE...WITH THE DRY
SLOT STILL BEING PROGGED TO KEEP DRY CONDS OVER THE FORECAST AREA
THRU THE BULK OF THE DAY TUE. BY MID/LATE AFTN THE MID-LVL TROUGH
AXIS APPROACHES FROM THE NORTHWEST...AND WITH ANY SFC
DESTABILIZATION...A FEW ISO TSRA COULD DEVELOP FROM THE STEEP LAPSE
RATES AND COOLING IN THE MID-LVLS. WITH THE FLOW REMAINING
PROGRESSIVE...THE TROUGH AXIS SLIDES OVERHEAD BY 03Z WED AND SHUD
BRING A QUICK END TO ANY DIURNALLY DRIVEN SHRA/TSRA ACROSS THE CWFA
WITH A DRY OVERNIGHT PERIOD. GUIDANCE IS ALSO INDICATING A TRAILING
WEAK TROUGH SLIDING INTO THE CENTRAL PLAINS WED MORNING...WITH AN
ABUNDANCE OF LOW/MID LVL MOISTURE WRAPPING AROUND THE WESTERN GREAT
LAKES REGION. THIS WILL LIKELY BRING A CHC FOR LIGHT SHOWERS FOR
WED. WITH CONSIDERABLE SOLAR SHIELDING WED...AND A THERMAL TROUGH OF
6 TO 8 DEG C OVERHEAD...TEMPS COULD STRUGGLE TO WARM BEYOND 70-74
FOR NORTHERN IL/NORTHWEST IN. IT IS PLAUSIBLE THAT A FEW POINTS IN
FAR NORTHERN IL THAT REMAIN IN THE UPR 60S WED AFTN.

BROAD TROUGH THEN PUSHES EAST WED NGT...WITH SFC ANTI-CYCLONIC
FEATURE BUILDING IN FROM THE WEST. THIS FEATURE WILL HELP TO DRY THE
LOW-LEVELS OUT AND ALLOW WINDS TO TURN NORTHWEST TO NORTH. THEN FOR
THUR THE NORTHERLY DRY FLOW WILL BRING SUNNY SKIES WITH TEMPS
GENERALLY IN THE 70S. A LAKE BREEZE LOOKS LIKELY AND COULD KEEP ON
ONSHORE FLOW FOR THE ADJACENT LAKE SHORE COMMUNITIES AND TEMPS IN
THE 60S.

CONFIDENCE...HIGH.

FRIDAY THROUGH MONDAY...
ENSEMBLES CONTINUE TO PROG A RIDGE ACROSS THE CANADIAN ROCKIES FOR
THE END OF THE WORK WEEK...ALLOWING A DOWNSTREAM TROUGH TO BE OVER
THE GREAT LAKES/NORTHEAST CONUS. AS THE WEEKEND PROGRESSES THE WAVE
WILL BEGIN TO RELAX...ALTHOUGH THE MID-LVL TROUGH WILL DRIFT EAST BY
SAT/SUN OVER THE UPPER MIDWEST/NORTH OF LAKE SUPERIOR. THIS SHUD
ALLOW TEMPS TO SLOWLY RETURN TO NEAR SEASONAL CONDS. ALTHOUGH AS THE
WEEKEND PROGRESSES...THE LONG WAVE PATTERN DOES TRANSITION INTO A
SEMI-ZONAL FLOW WITH HEIGHTS STEADILY INCREASING ACROSS THE ENTIRE
CONUS. TEMPS FOR FRI SHUD CONTINUE TO BE SUB-SEASONAL IN THE 70S
NEAR 80...THEN BACK TO ARND 80 OR LOW 80S FOR THE WEEKEND. EARLY
NEXT WEEK THE PATTERN DOES APPEAR TO POINT TOWARDS TEMPS RETURNING
TO LOW/MID 80S. IN ADDITION TO THE SEMI-ZONAL FLOW...IT DOES SUPPORT
A QUICK WEST-EAST FLOW OF WEAK WAVES. THIS COULD EASILY BRING A LOW
CHC POPS FOR THE WEEKEND/EARLY NEXT WEEK.

CONFIDENCE...HIGH.

BEACHLER

&&

.AVIATION...

//ORD AND MDW CONCERNS...UPDATED 00Z...

* LINE OF THUNDERSTORMS MOVING THROUGH THE TERMINALS. SECONDARY LINE
  OVER IOWA TO FOLLOW LATER THIS EVENING.  ETA ON THAT LINE IS
  02-04Z.

* POTENTIAL FOR WINDS TO GUST UP TO 45 KT WITH LEADING EDGE OF THE
  CURRENT INITIAL LINE.

* POSSIBLE BRIEF IFR VSBYS UNDER HEAVIEST THUNDERSTORM. POOREST
  CONDITIONS LAST 20-30 MINUTES. RAIN AND OCCASIONAL THUNDER FOR
  ANOTHER 1-2 HOURS AFTER THAT... AND BEFORE THE SECOND LINE OF
  STORMS.

* GREATLY DISTURBED WIND FIELD FOLLOWING THE INITIAL LINE OF
  STORMS SHOULD TREND EAST AND THEN SOUTHEAST AHEAD OF SECOND LINE.

* WINDS BECOME NORTHWEST BEHIND SECOND LINE BEFORE REESTABLISHING
  SOUTHWEST OVERNIGHT.

ED F

//DISCUSSION...UPDATED 00Z...

LINEAR LINE OF STORMS CURRENTLY MOVING THROUGH SHOWING SOME UPTICK AS
IT MOVES INTO THE METRO AREA.  LEADING EDGE GUSTS RUNNING 35-40 KTS
PER UPSTREAM GROUND TRUTH.  LOWERING OF CIGS/VSBYS TO UNDER 1 MILE
EXPECTED AS 20-30 MINUTE PERIOD OF HEAVY RAIN WITH THUNDER MOVES
THROUGH THE TERMINALS ALONG WITH POTENTIAL FOR GUSTS OF 45 KTS.

PERIOD OF RAIN WITH EMBEDDED THUNDER FOLLOWS INITIAL LINE FOR 1-2
HOURS AS WINDS BECOME DISTURBED FROM LINE OF STORMS AND TURNS MORE
NE TO EAST.  SECOND LINE OF STORMS CURRENTLY OVER EASTERN IOWA HAS
BECOME BETTER ORGANIZED DURING THE PAST 30-60 MINUTES AND IS POISED
TO MOVE ACROSS THE TERMINALS BETWEEN THE 02Z-04Z TIME FRAME.  EXPECT
ANOTHER ROUND OF DISRUPTIVE STORMS WITH THIS LINE AND WILL REFINE
IT'S TIMING IN THE COMING HOUR.

WINDS WILL BECOME SOUTHEAST AHEAD OF THE SECOND LINE OF STORMS
BEFORE TURNING NORTHWEST AS THE LINE MOVES THROUGH. ANOTHER BRIEF
PERIOD OF IFR CIGS AND VSBYS EXPECTED FOR 20-30 MINUTES WITH THE
SECOND LINE AS WINDS AGAIN TURN NORTHWEST WITH THE LINE AND FOR A
SHORT TIME FOLLOWING.

ED F

//ORD AND MDW CONFIDENCE...UPDATED 00Z...

* LOW CONFIDENCE OF WIND FORECAST WITH WINDS DISTURBED BY
  THUNDERSTORMS THROUGH 05Z.

* MEDIUM TO HIGH CONFIDENCE IN THUNDERSTORM FORECAST TRENDS

ED F

//OUTLOOK FOR ORD/MDW FOR 12Z WEDNESDAY-12Z MONDAY...UPDATED 00Z...

WEDNESDAY...VFR CHANCE OF SHRA.

THURSDAY...VFR DRY.

FRIDAY...VFR DRY.

SATURDAY...VFR DRY.

SUNDAY...SLGT CHANCE OF TSRA.

ED F

&&

.MARINE...
303 PM CDT

PRIMARY MARINE CONCERN IS OVER THE NEARSHORE WATERS AND SOUTH HALF
THIS EVENING AS AN INTENSE COMPLEX OF THUNDERSTORMS LIKELY HOLDS
TOGETHER AND BRINGS A PERIOD OF DANGEROUSLY STRONG WINDS AND
FREQUENT LIGHTNING. HAVE LEFT THE DENSE FOG ADVISORY FOR THE NORTH
HALF UNTIL THIS EVENING. BEFORE CLOUDS MOVED OVERHEAD...VISIBLE
SATELLITE SHOWED A BANK OF FOG COVERING MUCH OF THE NORTHERN PART
OF THE LAKE. SYNOPTIC SOUTHERLY WINDS STILL MAY BECOME STRONG
ENOUGH FOR SMALL CRAFT CRITERIA THIS EVENING IN THE NEARSHORE BUT
DO NOT HAVE ENOUGH CONFIDENCE TO HOIST AN ADVISORY.

HAVE BETTER CONFIDENCE IN SMALL CRAFT WIND CRITERIA BEING MET ON
TUESDAY. TIGHT PRESSURE GRADIENT AND DEEP MIXING FROM LAND WILL
LIKELY RESULT IN WEST-SOUTHWEST WINDS AROUND 20 KT AND FREQUENT
GUSTS TO 25 KT OR EVEN A BIT HIGHER LATE TUESDAY MORNING THROUGH
LATE TUESDAY AFTERNOON. HAVE SOME CONCERN THAT GUSTY WINDS MAY
EXTEND A BIT INTO TUESDAY EVENING. HIGH PRESSURE WILL SPREAD OVER
THE LAKE THURSDAY INTO FRIDAY AND ONLY SLOWLY MOVE EASTWARD ON
SATURDAY. AN FAIRLY EXTENDED PERIOD OF LIGHT WINDS WITH DIRECTIONS
NEAR THE SHORES CONTROLLED BY LAKE BREEZE INFLUENCES BY DAY WILL
ENSUE WEDNESDAY NIGHT THROUGH AT LEAST FRIDAY NIGHT. MODEST
SOUTHERLY WINDS WILL DEVELOP ON SATURDAY AS THE HIGH SLIDES EAST.

RC

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...FLASH FLOOD WATCH...ILZ003-ILZ004-ILZ005-ILZ006-ILZ008-ILZ010-
     ILZ011-ILZ012-ILZ013-ILZ014-ILZ019-ILZ020-ILZ021-ILZ022-
     ILZ023-ILZ032 UNTIL 4 AM TUESDAY.

IN...FLASH FLOOD WATCH...INZ001-INZ002 UNTIL 4 AM TUESDAY.

LM...DENSE FOG ADVISORY...LMZ261-LMZ362-LMZ364-LMZ366-LMZ563-LMZ565-
     LMZ567-LMZ868 UNTIL 9 PM MONDAY.

     SMALL CRAFT ADVISORY...LMZ740-LMZ741-LMZ742-LMZ743-LMZ744-
     LMZ745...9 AM TUESDAY TO 7 PM TUESDAY.

&&

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
328 PM CDT MON JUN 30 2014

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
012030-
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-
328 PM CDT MON JUN 30 2014 /428 PM EDT MON JUN 30 2014/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

.DAY ONE...TONIGHT.

  WEATHER HAZARDS EXPECTED:

  SEVERE THUNDERSTORMS...SOME OF WHICH MAY PRODUCE:

  WIND GUSTS IN EXCESS OF 70 MPH.
  ISOLATED GUSTS IN EXCESS OF 90 MPH.
  POSSIBLY A TORNADO.
  HAIL UP TO 2 INCHES IN DIAMETER.
  TORRENTIAL RAINFALL AND LOCALIZED FLOODING.
  FREQUENT CLOUD TO GROUND LIGHTNING.

  AREAS AFFECTED AND TIMING:

  A LINE OF THUNDERSTORMS HAS ALREADY DEVELOPED OVER EAST CENTRAL
  IOWA AND IS EXPECTED TO ARRIVE OVER NORTHERN ILLINOIS AROUND
  530PM CDT AND CONTINUE TO PUSH EAST NEARING NORTHWEST INDIANA
  BY 7 PM CDT. SOME OF THESE STORMS MAY BE SEVERE AND MAY ALSO
  PRODUCE LOCALLY HEAVY RAINFALL THIS EVENING. THUNDERSTORMS
  WILL THEN DIMINISH AND GRADUALLY MOVE EAST OF THE AREA LATER
  THIS EVENING.

  DISCUSSION:

  THE COMBINATION OF STRONG INSTABILITY...STRONG WINDS ALOFT...
  AND THE APPROACHING LOW PRESSURE IS EXPECTED TO RESULT IN
  SEVERE THUNDERSTORMS ARRIVING IN WEST CENTRAL ILLINOIS THIS
  AFTERNOON. THESE STORMS WILL SPREAD EAST INTO NORTHERN ILLINOIS
  AND NORTHWEST INDIANA THROUGH THE EVENING HOURS.
  THE LINE OF STORMS IS EXPECTED TO DEVELOP INTO AN EASTWARD
  MOVING COMPLEX WITH A SIGNIFICANT POTENTIAL FOR DAMAGING WINDS
  ACROSS NORTHERN ILLINOIS AND NORTHWEST INDIANA THIS EVENING.
  WIND GUSTS IN EXCESS OF 70 MPH...WITH AN ISOLATED GUST IN EXCESS
  OF 90 MPH POSSIBLE.

PORTIONS OF THE KANKAKEE RIVERS WILL REMAIN IN FLOOD. OTHER AREA
STREAMS WILL REMAIN NEAR BANKFULL CONDITIONS...HOWEVER WITH
ADDITIONAL RAINFALL EXPECTED A FEW SITES MAY APPROACH FLOOD STAGE AGAIN.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

THERE IS A SLIGHT CHANCE OF THUNDERSTORMS SATURDAY NIGHT INTO
SUNDAY.

PORTIONS OF THE KANKAKEE RIVERS WILL REMAIN IN FLOOD. OTHER AREA
STREAMS WILL REMAIN NEAR BANKFULL CONDITIONS...HOWEVER WITH
ADDITIONAL
RAINFALL A FEW SITES MAY APPROACH FLOOD STAGE AGAIN.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE NEEDED THIS AFTERNOON THROUGH THIS EVENING.

&&

LMZ740>745-012030-
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-
328 PM CDT MON JUN 30 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS NEARSHORE
WATERS OF LAKE MICHIGAN AND THE INDIANA NEARSHORE WATERS OF LAKE
MICHIGAN.

.DAY ONE...TONIGHT.

THUNDERSTORMS ARE LIKELY THIS EVENING THROUGH TONIGHT...WITH SEVERE
THUNDERSTORMS POSSIBLE DURING THE EVENING. WIND GUSTS IN EXCESS OF
60 KNOTS WILL BE POSSIBLE THIS EVENING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

GUSTY WEST WINDS MAY PRODUCE HAZARDOUS CONDITIONS FOR SMALL
CRAFT ON TUESDAY.

THERE IS A SLIGHT CHANCE OF THUNDERSTORMS SATURDAY NIGHT INTO
SUNDAY.

&&

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-012030-
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-
328 PM CDT MON JUN 30 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE
MICHIGAN.

.DAY ONE...TONIGHT.

THUNDERSTORMS...SOME OF WHICH MAY BE SEVERE...ARE EXPECTED
OVER MUCH OF THE LAKE LATER THIS AFTERNOON AND TONIGHT.
WIND GUSTS IN EXCESS OF 60 KNOTS WILL BE POSSIBLE.

PATCHY DENSE FOG IS POSSIBLE ACROSS THE NORTHERN HALF OF THE
LAKE THROUGH TONIGHT.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

PATCHY DENSE FOG MAY LINGER MAINLY ACROSS NORTHERN LAKE
MICHIGAN THROUGH TUESDAY.

THERE IS A SLIGHT CHANCE OF THUNDERSTORMS SATURDAY NIGHT INTO
SUNDAY.

&&

BEACHLER

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
943 PM CDT MON JUN 30 2014

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0915 PM     HEAVY RAIN       AMBOY                   41.72N 89.33W
06/30/2014  M2.20 INCH       LEE                IL   TRAINED SPOTTER

            RAINFALL SINCE 530 PM.

&&

BN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
947 PM CDT MON JUN 30 2014

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0910 PM     TSTM WND DMG     MENDOTA                 41.55N 89.12W
06/30/2014                   LA SALLE           IL   AMATEUR RADIO

            2 SEMI-TRUCKS FLIPPED OVER ON I39. NUMEROUS TREE BRANCHES
            DOWN IN TOWN.

&&

BN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
957 PM CDT MON JUN 30 2014

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0953 PM     TSTM WND GST     OSWEGO                  41.70N 88.33W
06/30/2014  M75 MPH          KENDALL            IL   TRAINED SPOTTER

            NEAR INTERSECTION OF US30 AND US34.

&&

BN

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PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1008 PM CDT MON JUN 30 2014

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0950 PM     TSTM WND DMG     2 E MORRIS              41.37N 88.39W
06/30/2014                   GRUNDY             IL   TRAINED SPOTTER

            LOTS OF TREES DOWN IN A YARD ALONG GUN CLUB ROAD. ALSO
            SAW POWER FLASHES. WIND LASTED ABOUT 5 MINUTES.

&&

LENNING

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1012 PM CDT MON JUN 30 2014

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1003 PM     TSTM WND GST     BOLINGBROOK             41.70N 88.08W
06/30/2014  M82 MPH          WILL               IL   TRAINED SPOTTER

&&

MTF