Severe Thunderstorm Warning 151, NWS Chicago, IL

935 
WWUS53 KLOT 072057
SVSLOT

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
357 PM CDT SUN AUG 7 2011

ILC007-037-111-072145-
/O.CON.KLOT.SV.W.0151.000000T0000Z-110807T2145Z/
MCHENRY IL-BOONE IL-DE KALB IL-
357 PM CDT SUN AUG 7 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
DE KALB...SOUTHERN BOONE AND SOUTHWESTERN MCHENRY COUNTIES UNTIL 445
PM CDT...

AT 355 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES
EAST OF BELVIDERE...MOVING SOUTHEAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  MARENGO...GENOA AND UNION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4227 8839 4215 8857 4215 8859 4214 8859
      4206 8870 4230 8893 4234 8885 4241 8877
TIME...MOT...LOC 2057Z 313DEG 27KT 4226 8871
WIND...HAIL 60MPH 1.00IN

$$

BMD

980 
WWUS53 KLOT 072117
SVSLOT

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
417 PM CDT SUN AUG 7 2011

ILC007-037-072126-
/O.CAN.KLOT.SV.W.0151.000000T0000Z-110807T2145Z/
BOONE IL-DE KALB IL-
417 PM CDT SUN AUG 7 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN DE KALB AND
SOUTHERN BOONE COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA. ADDITIONAL THUNDERSTORMS HAVE DEVELOPED ACROSS PORTIONS OF THE 
PREVIOUSLY WARNED AREA.

LAT...LON 4224 8843 4223 8845 4215 8857 4215 8869
      4218 8871 4223 8870 4229 8863
TIME...MOT...LOC 2116Z 313DEG 27KT 4216 8857

$$

ILC111-072145-
/O.CON.KLOT.SV.W.0151.000000T0000Z-110807T2145Z/
MCHENRY IL-
417 PM CDT SUN AUG 7 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
MCHENRY COUNTY UNTIL 445 PM CDT...

AT 414 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 5 MILES
SOUTH OF MARENGO...MOVING SOUTHEAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EXTREME SOUTHERN MCHENRY COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4224 8843 4223 8845 4215 8857 4215 8869
      4218 8871 4223 8870 4229 8863
TIME...MOT...LOC 2116Z 313DEG 27KT 4216 8857
WIND...HAIL 60MPH 1.00IN

$$

BMD

159 
WWUS53 KLOT 072127
SVSLOT

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
427 PM CDT SUN AUG 7 2011

ILC111-072137-
/O.CAN.KLOT.SV.W.0151.000000T0000Z-110807T2145Z/
MCHENRY IL-
427 PM CDT SUN AUG 7 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MCHENRY COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

LAT...LON 4224 8843 4223 8845 4215 8857 4215 8869
      4218 8871 4223 8870 4229 8863
TIME...MOT...LOC 2127Z 313DEG 27KT 4210 8849

$$

BMD

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
329 PM CDT SUN AUG 7 2011

.DISCUSSION...
319 PM CDT

NEAR TERM FORECAST CONCERNS FOCUS ON THUNDERSTORM POTENTIAL WITH
COLD FRONT SAGGING ACROSS THE AREA THROUGH THIS EVENING...AND PRECIP
TRENDS MONDAY WITH ANOTHER MID LEVEL WAVE PROPAGATING ACROSS THE
REGION. IN LONGER TERM...PATTERN SHIFT UNDERWAY WHICH WILL ALLOW FOR
COOLER AND LESS HUMID WEATHER THAN WE HAVE HAD RECENTLY.

BATCH OF STRONG/SEVERE THUNDERSTORMS MOVED ACROSS PARTS OF THE
FORECAST AREA THIS MORNING...IN ASSOCIATION WITH ANOTHER MID LEVEL
WAVE AND SURFACE TROUGH REFLECTION. ACTUAL SURFACE COLD FRONT TRAILS
ACROSS FAR SOUTHERN WI AND IA AT 20Z HOWEVER...WITH ANOTHER FAIRLY
POTENT MID LEVEL SHORT WAVE DROPPING SOUTHEAST FROM MN INTO SW WI
PER GOES VAPOR IMAGERY. SHOWERS/ISOLATED THUNDERSTORMS HAVE
DEVELOPED OVER THE PAST 1-2 HOURS ALONG/AHEAD OF THE FRONT...AND
EXPECT THIS ACTIVITY WILL CONTINUE TO DEVELOP AND PUSH SOUTHEAST
AHEAD OF THE FRONT ACROSS THE CWA INTO THIS EVENING. AIR MASS AHEAD
OF FRONT ACROSS NORTHERN IL CHARACTERIZED BY MLCAPE OF AROUND 1500
J/KG PER SPC/RUC MESOANALYSIS...WITH EFFECTIVE BULK SHEAR VALUES
APPROACHING 30 KTS SUGGESTING POTENTIAL FOR THE STRONGEST STORMS TO
PRESENT A BRIEF WIND/HAIL THREAT. LIMITING FACTOR MAY BE WEAK LOW
LEVEL CONVERGENCE AHEAD OF FRONT...AS LOW LEVEL WINDS ARE
WEST-SOUTHWEST AHEAD OF WEST-EAST ORIENTED SFC FRONT. COMBINATION OF
LOSS OF DIURNAL INSTABILITY AND EVENTUAL SHIFT OF FRONT SOUTHEAST
ACROSS AREA THIS EVENING SHOULD ALLOW FOR DECREASING SHOWER AND
THUNDERSTORM COVERAGE LATER THIS EVENING. FORECAST SOUNDINGS SUGGEST
THE POTENTIAL FOR SOME FOG OR LOW STRATUS DEVELOPMENT LATE TONIGHT
AND EARLY MONDAY...THOUGH THIS WILL LIKELY BE DEPENDENT UPON DEGREE
OF MID/HIGH CLOUD COVER WITH NEXT UPSTREAM SHORT WAVE.

WEAK HIGH PRESSURE BUILDS ACROSS ONTARIO AND THE NORTHERN/WESTERN
GREAT LAKES REGION LATE TONIGHT AND EARLY MONDAY...THOUGH MODELS ARE
IN GENERAL AGREEMENT IN BRINGING NEXT SHORT WAVE TROUGH THROUGH THE
WESTERLIES AND ACROSS IA INTO IL MONDAY AFTERNOON/NIGHT. WHILE
GUIDANCE IN GENERAL AGREEMENT WITH EXISTENCE OF THIS WAVE...THERE IS
SOME SPREAD IN SOLUTIONS WITH THE TIMING/SPEED OF THIS FEATURE.
GENERAL CONSENSUS IS FOR HIGHER PRECIP POTENTIAL ACROSS SOUTHERN
PARTS OF THE FORECAST AREA HOWEVER...SO HAVE SHADED CHANCE POPS
HIGHER TO THE SOUTH AND LOWER TO THE NORTH INTO TUESDAY.
AMPLIFICATION OF LARGE SCALE TROUGH OVER EASTERN CONUS IS EXPECTED
DURING THIS TIME IN PART THANKS TO ANOTHER RELATIVELY DEEP SHORT
WAVE DIGGING ACROSS ONTARIO AND THE NORTHERN LAKES. THIS WILL ALSO
HELP KEEP THREAT OF SHOWERS ACROSS THE AREA THROUGH AT LEAST TUESDAY
MORNING WITH ASSOCIATED SECONDARY SURFACE TROUGH/COLD FRONT.

WITH LARGE SCALE UPPER TROUGH AXIS EAST OF THE REGION BY MIDWEEK...
SURFACE HIGH PRESSURE EXPECTED TO BUILD ACROSS THE MIDWEST TUESDAY
NIGHT THROUGH THURSDAY. THIS SHOULD PROVIDE A WELCOME PERIOD OF DRY
COOLER AND LESS HUMID WEATHER...WITH HIGHS IN THE UPPER 70S/NEAR 80
AND DEW POINTS IN THE 50S/AROUND 60.

LONGER RANGE GUIDANCE...GFS/ECMWF AND GEFS...IN REASONABLE AGREEMENT
IN DEPICTING RELATIVELY PROGRESSIVE BEHAVIOR TO EASTERN CONUS TROUGH
BY THE END OF THE WEEK...WITH UPPER FLOW BECOMING MORE ZONAL ONCE
AGAIN. ANOTHER FAIRLY AMPLIFIED SHORT WAVE IS PROGGED TO BRING THE
NEXT THREAT OF PRECIP IN THE FRIDAY-SATURDAY PERIOD ALONG WITH
SLIGHTLY WARMER TEMPS BACK INTO THE 80S.

RATZER

&&

.AVIATION...

//ORD AND MDW CONCERNS...UPDATED 18Z...

* POTENTIAL FOR NEW TSRA DEVELOPMENT ALONG COLD FRONT THIS AFTRN.

* POSSIBLE LOW STRATUS/CIGS AFT 12Z TONIGHT.

* ADDITIONAL THUNDERSTORMS MONDAY AFTERNOON/EVENING.

BMD

//DISCUSSION...UPDATED 18Z...

AREA OF SHOWERS AND THUNDERSTORMS HAS PUSHED EAST OF THE TERMINALS
THIS MORNING WITH FAIRLY RAPID SCATTERING OF THE CLOUDS BEHIND.
INSTABILITY HAS BEGUN TO REDEVELOP THIS AFTERNOON...AND WITH A COLD
FRONT STILL TO THE NORTH OF THE FORECAST AREA...WILL STILL BE UNDER
SOME THREAT FOR THUNDERSTORMS TO REDEVELOP THIS AFTERNOON. THINK
BEST CHANCE FOR INITIATION WILL BE BY MID AFTERNOON AS UPPER LEVEL
WAVE PROPAGATES THROUGH THE AREA. BY THIS TIME HOWEVER...THE FRONT
SHOULD BE DROPPING SOUTH THROUGH THE CHICAGO AND ROCKFORD AREA
TERMINALS WITH ONLY ISOLATED DEVELOPMENT ALONG THE FRONT. BASED ON
ONGOING UNCERTAINTY IN EVOLUTION THIS AFTERNOON...OPTED TO KEEP TSRA
OUT OF TAFS...THOUGH THERE COULD BE CBS DEVELOPING NEARBY THAT WILL
HAVE TO KEEP A CLOSE EYE ON.

OTHERWISE...SHOULD BE A QUIET EVENING WITH WINDS DECREASING
OVERNIGHT AS RIDGE OF HIGH PRESSURE BUILDS. GUIDANCE CONTINUES TO
HAVE A STRONG SIGNAL FOR LOW STRATUS OR FOG IN THE MORNING...THOUGH
DETAILS ARE STILL A BIT UNCERTAIN. OPTED TO DROP THE MORE PRONE
RURAL/SUBURBAN SITES DOWN TO IFR WITH THE MORE URBAN SITES INTO
MVFR. FOR MONDAY...MODEL GUIDANCE SHOW LOW CLOUDS LINGERING WITH
WEAK OFFSHORE WINDS THROUGH THE DAY. THERE IS A POTENTIAL FOR
ADDITIONAL THUNDERSTORMS MONDAY EVENING...BUT THIS MAY STAY SOUTH OF
THE TERMINALS.

BMD

//ORD AND MDW CONFIDENCE...UPDATED 18Z...

* LOW CONFIDENCE ON CONVECTIVE EVOLUTION THIS AFTERNOON WITH COLD
  FRONT.

* MEDIUM CONFIDENCE IN CIG/VIS REDUCTIONS EARLY MONDAY MORNING.

* MEDIUM CONFIDENCE ON WIND FORECAST.

* LOW CONFIDENCE ON ADDITIONAL THUNDERSTORMS LATE SUNDAY
  AFTERNOON/EVENING.

BMD

//OUTLOOK FOR ORD/MDW FOR 00Z TUESDAY-12Z SUNDAY...UPDATED 12Z...

MONDAY NIGHT...VFR. SLIGHT CHC SHRA/TSRA.
TUESDAY...VFR. CHC SHRA/TSRA.
WEDNESDAY THROUGH THURSDAY...VFR.
FRIDAY THROUGH SATURDAY...VFR. CHC SHRA/TSRA.

BEACHLER

&&

.MARINE...
329 PM CDT

A COLD FRONT IS DROPPING SOUTH ACROSS LAKE MICHIGAN THIS
AFTERNOON...WITH WEST-SOUTHWEST WINDS AHEAD OF THE FRONT AND
NORTHWEST WINDS BEHIND THE FRONT. THE FRONT SHOULD CLEAR THE
SOUTHERN PORTIONS OF LAKE MICHIGAN BY MID EVENING. WINDS WILL BECOME
MORE NORTHERLY OVERNIGHT AND INCREASE TO AROUND 20 KTS AS HIGH
PRESSURE BUILDS IN BEHIND THE COLD FRONT. BY TOMORROW
AFTERNOON...WINDS SHOULD BECOME WEAK ACROSS THE LAKE AS HIGH
PRESSURE BEGINS TO MOVE ACROSS THE LAKE. THIS HIGH BEGINS TO SLIDE
EAST OF THE LAKE EARLY TUESDAY WITH SOUTHWESTERLY FLOW INCREASING IN
ITS WAKE. ANOTHER COLD FRONT DROPS ACROSS LAKE MICHIGAN ON TUESDAY
EVENING BRINGING ANOTHER CHANCE OF SHOWERS AND THUNDERSTORMS WITH
WINDS ONCE AGAIN INCREASING TO AROUND 20 KTS IN ITS WAKE.

BMD

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...NONE.
IN...NONE.
LM...NONE.
&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1136 AM CDT SUN AUG 7 2011

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
081645-
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-
1136 AM CDT SUN AUG 7 2011 /1236 PM EDT SUN AUG 7 2011/

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

 WEATHER HAZARDS EXPECTED:

 THUNDERSTORMS...A FEW MAY PRODUCE:
 STRONG DAMAGING WIND GUSTS IN EXCESS OF 60 MPH.
 FREQUENT LIGHTNING.

AREAS AFFECTED AND TIMING:

 STRONG THUNDERSTORMS OVER NORTHWEST INDIANA LATE THIS MORNING
 WILL MOVE EAST OF THE AREA BY EARLY AFTERNOON. HOWEVER...ADDITIONAL
 SCATTERED THUNDERSTORMS MAY REDEVELOP ACROSS NORTHERN ILLINOIS
 AND NORTHWEST INDIANA DURING THE MID AND LATE AFTERNOON HOURS.
 SCATTERED THUNDERSTORMS MAY CONTINUE INTO THE EVENING HOURS
 SOUTH OF INTERSTATE 80. SOME OF THESE STORMS WILL HAVE THE
 POTENTIAL TO BECOME SEVERE...PARTICULARLY ACROSS PORTIONS OF
 NORTHWEST INDIANA AND EAST CENTRAL ILLINOIS ROUGHLY SOUTH OF A
 PONTIAC TO KANKAKEE TO HEBRON LINE.

DISCUSSION:

 A SLOW MOVING COLD FRONT...ORIENTED FROM WEST TO EAST ACROSS
 WISCONSIN AND MINNESOTA WILL SAG SOUTH ACROSS NORTHERN ILLINOIS
 AND NORTHWEST INDIANA LATE THIS AFTERNOON INTO EARLY THIS
 EVENING. SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG OR
 AHEAD OF THIS FRONT DURING THE AFTERNOON HOURS...AND LINGER INTO
 THE EVENING AS THE FRONT CONTINUES TO DRIFT SOUTH. AREAS SOUTH OF
 ROUGHLY A PONTIAC TO KANKAKEE AND HEBRON LINE WILL HAVE THE
 GREATEST POTENTIAL FOR SEVERE STORMS THROUGH EARLY AFTERNOON...
 WHERE LOW LEVEL MOISTURE HAS POOLED WITH DEW POINTS IN THE LOW TO
 MID 70S. LARGE HAIL AND DAMAGING WINDS WILL BE POSSIBLE WITH THE
 STRONGER STORMS THAT DEVELOP IN THESE AREAS. WHILE THE SEVERE
 THREAT MAY BE LOWER NORTH AND WEST OF THESE AREAS...THE POTENTIAL
 FOR AN ISOLATED SEVERE STORMS CAN NOT BE RULED OUT DUE TO THE
 PRESENCE OF STRONGER WESTERLY WINDS ALOFT.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

ADDITIONAL ROUNDS OF THUNDERSTORMS ARE POSSIBLE ON MONDAY SOUTH
OF THE KANKAKEE AND ILLINOIS RIVERS. MONDAY NIGHT THROUGH TUESDAY
AND AGAIN FRIDAY THROUGH SATURDAY...THUNDERSTORMS ARE POSSIBLE
AREA WIDE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

LMZ740>745-081645-
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-
1136 AM CDT SUN AUG 7 2011

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.

THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON INTO EARLY THIS EVENING. SOME
STORMS MAY PRODUCE WIND GUSTS IN EXCESS OF 35 KT.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

THERE IS A CHANCE OF THUNDERSTORMS...MONDAY NIGHT THROUGH TUESDAY
AND AGAIN FRIDAY THROUGH 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-
870-872-874-876-878-081645-
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-
1136 AM CDT SUN AUG 7 2011

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND THIS EVENING MAINLY
ACROSS SOUTHERN LAKE MICHIGAN. SOME STORMS MAY PRODUCE WIND GUSTS
IN EXCESS OF 35 KT ACROSS THE FAR SOUTH PORTION OF THE LAKE.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

THERE ARE PERIODIC CHANCES OF THUNDERSTORMS ACROSS LAKE
MICHIGAN MONDAY NIGHT THROUGH TUESDAY AND AGAIN FRIDAY THROUGH
SATURDAY.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

RATZER

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1111 AM CDT SUN AUG 07 2011

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

1040 AM     TSTM WND GST     3 NNW BURNS HARBOR      41.65N 87.15W
08/07/2011  M39.00 MPH       PORTER             IN   C-MAN STATION

&&

BMD

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1113 AM CDT SUN AUG 07 2011

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

1040 AM     MARINE TSTM WIND 3 NNW BURNS HARBOR      41.65N 87.15W
08/07/2011  M39.00 MPH       PORTER             IN   C-MAN STATION

            34KT WIND GUST.

&&

BMD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1209 PM CDT SUN AUG 07 2011

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

1140 AM     HAIL             2 E WADENA              40.69N 87.24W
08/07/2011  M0.88 INCH       BENTON             IN   EMERGENCY MNGR

            ALSO 0.70 INCHES OF RAIN IN LAST 20 MINUTES.

&&

RATZER