Wind Advisory 3, NWS Chicago, IL

Boone County, IL, DeKalb County, IL, DuPage County, IL, Ford County, IL, Grundy County, IL, Iroquois County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Lake County, IL, LaSalle County, IL, Lee County, IL, Livingston County, IL, McHenry County, IL, Ogle County, IL, Winnebago County, IL, Benton County, IN, Jasper County, IN, Lake County, IN, Newton County, IN, Porter County, IN

000 
WWUS73 KLOT 311701
NPWLOT

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1101 AM CST FRI MAR 31 2006

...STRONG WINDS ACROSS NORTHERN ILLINOIS AND NORTHWEST INDIANA
THIS AFTERNOON...

.STRONG WINDS ARE EXPECTED THROUGH THIS AFTERNOON AS A DEEP LOW
PRESSURE SYSTEM MOVES ACROSS THE UPPER GREAT LAKES REGION.

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
312300-
/O.CON.KLOT.WI.Y.0003.000000T0000Z-060401T0000Z/
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-
INCLUDING THE CITIES OF...ROCKFORD...WOODSTOCK...WAUKEGAN...
OREGON...DIXON...DEKALB...AURORA...CHICAGO...OTTAWA...OSWEGO...
MORRIS...JOLIET...KANKAKEE...PONTIAC...WATSEKA...PAXTON...GARY...
VALPARAISO...MOROCCO...RENSSELAER...FOWLER
1201 PM EST FRI MAR 31 2006 /1101 AM CST FRI MAR 31 2006/

...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST /7 PM EST/ THIS
AFTERNOON...

A WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST /7 PM EST/ THIS
AFTERNOON. 

SUSTAINED WINDS OF AROUND 30 MPH...WITH GUSTS AS HIGH AS 45 MPH...
ARE EXPECTED TO AFFECT NORTHERN ILLINOIS AND NORTHWEST INDIANA
THE REST OF THIS AFTERNOON.  

AT 1045 AM CST...MORRIS AIRPORT REPORTED A WIND GUST OF 43
MPH...WITH SUSTAINED WINDS OF 35 MPH. ILLINOIS VALLEY AIRPORT
NEAR PERU HAD A GUST OF 41 MPH...AND PONTIAC WAS GUSTING TO 40
MPH.

A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED OR
OCCURRING. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY
FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION.

$$

MERZLOCK

000 
WWUS73 KLOT 311936
NPWLOT

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
136 PM CST FRI MAR 31 2006

...STRONG WINDS ACROSS NORTHERN ILLINOIS AND NORTHWEST INDIANA
THIS AFTERNOON...

.STRONG WINDS ARE EXPECTED THROUGH THIS AFTERNOON AS A DEEP LOW
PRESSURE SYSTEM MOVES ACROSS THE UPPER GREAT LAKES REGION.

ILZ014-INZ001-002-010000-
/O.UPG.KLOT.WI.Y.0003.000000T0000Z-060401T0000Z/
/O.NEW.KLOT.HW.W.0001.060331T1936Z-060401T0000Z/
COOK-LAKE INDIANA-PORTER-
INCLUDING THE CITIES OF...CHICAGO...GARY...VALPARAISO
136 PM CST FRI MAR 31 2006

...HIGH WIND WARNING IN EFFECT UNTIL 6 PM CST THIS AFTERNOON...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A HIGH WIND
WARNING...WHICH IS IN EFFECT UNTIL 6 PM CST THIS AFTERNOON. THE
WIND ADVISORY IS NO LONGER IN EFFECT. 

SUSTAINED WINDS OF 30 TO 40 MPH WITH GUSTS TO AROUND 65 MPH WILL
AFFECT PORTIONS OF THE CHICAGO METRO AREA THROUGH THIS AFTERNOON.

A WIND GUST TO 67 MPH WAS RECORDED AT GARY/CHICAGO INTERNATIONAL
AIRPORT AROUND 1 PM. OTHER LOCATIONS ALONG LAKE MICHIGAN IN
COOK COUNTY ILLINOIS AS WELL AS LAKE AND PORTER COUNTIES INDIANA
HAVE RECORDED SIMILARLY STRONG...AND POTENTIALLY DAMAGING...WIND
GUSTS. WIND HAS ALREADY CAUSED DAMAGE AND AT LEAST ONE INJURY IN
NORTHERN PORTIONS OF THE CITY OF CHICAGO THIS AFTERNOON.

A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED
OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS
OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. BE EXTREMELY
CAREFUL IF VENTURING OUTSIDE OR DRIVING THIS AFTERNOON.

$$

ILZ003>006-008-010>013-019>023-032-033-039-INZ010-011-019-010000-
/O.CON.KLOT.WI.Y.0003.000000T0000Z-060401T0000Z/
WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-OGLE-LEE-DE KALB-KANE-
DUPAGE-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-IROQUOIS-
FORD-NEWTON-JASPER-BENTON-
INCLUDING THE CITIES OF...ROCKFORD...WOODSTOCK...WAUKEGAN...
OREGON...DIXON...DEKALB...AURORA...OTTAWA...OSWEGO...MORRIS...
JOLIET...KANKAKEE...PONTIAC...WATSEKA...PAXTON...MOROCCO...
RENSSELAER...FOWLER
236 PM EST FRI MAR 31 2006 /136 PM CST FRI MAR 31 2006/

...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST /7 PM EST/ THIS
AFTERNOON...

A WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST /7 PM EST/ THIS
AFTERNOON. 

SUSTAINED WINDS OF AROUND 30 MPH...WITH GUSTS TO 50 MPH...ARE
EXPECTED TO AFFECT NORTHERN ILLINOIS AND NORTHWEST INDIANA THE
REST OF THIS AFTERNOON.

RECENT WIND REPORTS INDICATED GUSTS BETWEEN 40 AND 50 MPH WERE
OCCURRING ACROSS THE AREA.

A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED OR
OCCURRING. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...
ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION.

$$

HANDEL

000 
WWUS73 KLOT 010008
NPWLOT

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
608 PM CST FRI MAR 31 2006

...THE STRONG LOW HAS MOVED EAST INTO EASTERN LAKE SUPERIOR... 

.THE LOW HAS MOVE EAST INTO LAKE EASTERN LAKE SUPERIOR. THE WIND
WILL CONTINUE TO DIMINISH TONIGHT. THE WIND HAS DIMINISHED TO
BELOW ADVISROY AND WARNING CRITERIA. SO THE WIND ADVISORY AND
WARNING HAS BEEN ALLOWED TO EXPIRE.

ILZ014-INZ001-002-010115-
/O.EXP.KLOT.HW.W.0001.000000T0000Z-060401T0000Z/
COOK-LAKE INDIANA-PORTER-
INCLUDING THE CITIES OF...CHICAGO...GARY...VALPARAISO
608 PM CST FRI MAR 31 2006

...HIGH WIND WARNING HAS EXPIRED...

THE HIGH WIND WARNING IS NO LONGER IN EFFECT. 

$$

ILZ003>006-008-010>013-019>023-032-033-039-INZ010-011-019-010115-
/O.EXP.KLOT.WI.Y.0003.000000T0000Z-060401T0000Z/
WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-OGLE-LEE-DE KALB-KANE-
DUPAGE-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-IROQUOIS-
FORD-NEWTON-JASPER-BENTON-
INCLUDING THE CITIES OF...ROCKFORD...WOODSTOCK...WAUKEGAN...
OREGON...DIXON...DEKALB...AURORA...OTTAWA...OSWEGO...MORRIS...
JOLIET...KANKAKEE...PONTIAC...WATSEKA...PAXTON...MOROCCO...
RENSSELAER...FOWLER
708 PM EST FRI MAR 31 2006 /608 PM CST FRI MAR 31 2006/

...WIND ADVISORY HAS EXPIRED...

THE WIND ADVISORY IS NO LONGER IN EFFECT. 

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
339 AM CST FRI 31 2006

.DISCUSSION FOR MORNING GRIDS/ZFP...

339 AM CST

DEEP UPPER LOW SPINNING ACROSS MIDWEST THIS MORNING...WITH
IMPRESSIVE NEGATIVE TILT S/WV LIFTING NORTHEAST THROUGH IL/WI/IA
REGION PER VAPOR IMAGERY. MOSAIC OF AREA RADARS INDICATES AREA OF
CONVECTIVE SHOWERS/THUNDERSTORMS ARCHING FROM EASTERN WI THROUGH
IL/IND STATE LINE REGION AT 9 UTC...AND ALTHOUGH PLENTY OF SYNOPTIC
LIFT AND DEEP SHEAR...ONLY MARGINAL INSTABILITY AVAILABLE. HAVE BEEN
SPORADIC WIND GUSTS IN EXCESS OF 40 KTS DUE TO STRONG SYNOPTIC WIND
FIELD...INDICATED IN REGIONAL PROFILER TIME/HEIGHT SECTIONS BY 60+
KT WINDS IN LOWEST 2 KM. FORECAST AREA TO REMAIN IN TIGHT PRESSURE
GRADIENT TODAY AS SYSTEM LIFTS NORTHEAST ACROSS WI/UPPER MI...WITH
FCST SOUNDINGS INDICATING POTENTIAL FOR SUSTAINED WINDS 25 KTS AND
GUSTS NEAR 40 KTS AT TIMES. WHILE THIS WOULD SUGGEST MARGINAL
TOUCHING OF WIND ADVISORY CRITERIRA...ADDITIONAL LOW LEVEL MIXING
WITH DRY SLOT WRAPPING IN ACROSS FCST AREA THIS MORNING LIKELY TO
AID ISALLOBARIC GRADIENT IN PRODUCING SIGNIFICANTLY GUSTY
CONDITIONS. THEREFORE IN AGREEMENT WITH SURROUNDING WFOS WILL ISSUE
WIND ADVISORY FOR ENTIRE CWA TODAY. RW/TRW TO MOVE OUT OF EASTERN
PARTS OF CWA THIS MORNING...THEN SOME PARTIAL CLEARING IN DRY SLOT
MORNING INTO EARLY AFTERNOON. SECONDARY VORT/WRAPAROUND MOISTURE
THEN SWINGS ACROSS FCST AREA THIS AFTN WITH SPOTTY SHOWERS. TRICKY
TEMP FCST WITH NW TO SE TEMP GRADIENT AND COMPLICATION OF ADDED DRY
SLOT SUNSHINE. MAXES MAY COME DURING THE MORNING HOURS BEFORE TEMPS
BECOME STEADY DUE TO CAA/CLOUDS. WILL CARRY HIGHS FROM AROUND 60 NW
TO UPPER 60S  SOUTHEAST.

WINDS GRADUALLY DIMINISH TNGT AS UPPER/SFC LOWS MOVE OFF INTO
ONTARIO...WITH SUBSIDENCE INCREASING ESPECIALLY AFTER 06 UTC.
SIGNIFICANT WARMING NOTED IN FCST SOUNDINGS INDICATIVE OF SUBSIDENCE
INVERSION...WITH MOISTURE TRAPPED IN LOW LEVELS BELOW 850 HPA. THIS
SUGGESTS STRATOCU/STRATUS MAY LINGER OVERNIGHT...THOUGH MAGNATUDE OF
DVM SUGGESTS POTENTIAL FOR AT LEAST SOME PARTIAL CLEARING TOWARD
MORNING ESPECIALLY WESTERN CWA. BROAD UPPER RIDGING THEN BUILDS
ACROSS THE REGION SATURDAY WITH SOUTHERN EXTENT OF SFC RIDGE AXIS
MOVING INTO NRN IL/NW IND BY AFTN. SUBSIDENCE INVERSION TO LIMIT
AMOUNT OF DEEP MIXING...SO TEMPS GENERALLY LOW TO MID 50S EXPECTED
FOR AFTN HIGHS. COOLER ALONG LAKE AS LGT NE GRADIENT WINDS SUPPORT
LAKE BREEZE THERE.

VERY PROGRESSIVE AND ACTIVE PATTERN THEN SENDS NEXT SYSTEM OUR WAY
FOR SECOND HALF OF WEEKEND. UPPER RIDGE AXIS SHIFTS EAST SATURDAY
NIGHT AS ANOTHER UPPER TROUGH CROSSES THE RCKYS. SFC LOW DEVELOPS
ALONG KS/NEB BORDER BY 12 UTC SUNDAY...WITH WARM FRONT EXTENDING
SOUTHEAST TO SOUTHERN IL. NAM/GFS BOTH INDICATING WEAK LEAD S/WV TO
LIFT NORTHEAST TO UPPER MS VLY SUNDAY MORNING...THOUGH BOTH MODEL
TSECTS SHOW LOW/MID LEVELS DRY THIS FAR NORTH OF LOW LEVEL WARM
FRONT. UPPER LOW DEEPENS DURING THE DAY SUNDAY HOWEVER AS SYSTEM
MOVES ACROSS CENTRAL PLAINS. BY SUNDAY EVENING SFC LOW OVER EASTERN
IOWA WITH BOTH GFS/NAM PUSHING WARM FRONTAL BOUNDARY INTO I-80
CORRIDOR. PRECIP CHANCES INCREASE AFTN/EVE AS STRONGER VORT ROUNDS
BASE OF UPPER TROUGH...WITH MODELS SUGGESTING PLENTY OF LOW LEVEL
MOISTURE ALONG/SOUTH OF BOUNDARY. THIS RESULTS IN GREATER
INSTABILITY THAN WITH PRESENT SYSTEM...AGAIN COUPLED WITH STRONG
SHEAR PROFILES. NOT SUPRISING SPC DAY 3 SVR OUTLOOK INCLUDES FCST
AREA AND WILL HAVE TO BE MONITORED CLOSELY. TEMPS TRICKY SUNDAY
AGAIN. IF MODEL WARM FRONTAL POSITION VERIFIES...COULD WELL BE INTO
MID 70S SOUTHERN COUNTIES LATE SUN AFTN WHILE IN 50S/LOW 60S NORTH.
HAVE BUMPED POPS TO LIKELY SUNDAY AFTN AND MAX TEMPS UP A BIT FOR
NOW...BUT WILL BEAR WATCHING NEXT COUPLE MODEL RUNS. NO REAL CHANGES
PAST SUNDAY NIGHT ATTM.

RATZER

&&

.AVIATION...
1045 PM CST

RE 06Z TAFORS...00Z TAFORS RECYCLED FOR 06Z ISSUANCE AS LTL CHANGE
IN FCST THINKING...EXC HAVE PUSHED UP ARRIVAL TM OF TSRA AT CHI VC
AN HR TO 06Z. MID-UPR LO OVR WRN IA TO CONT TO LIFT INTO SRN MN
OVRNGT. SFC LO IN SWRN MN WITH CDFNT SWRD ACROSS WRN IA INTO NWRN
MO. LO MOVS TO E CNTRL MN BY 12Z WITH CDFNT ROTATING INTO NE AND E
CNTRL IL. WNDS ONLY VEER TO SW WITH CFP AS SFC LO STILL IN NRN WI AT
18Z FRI. DRY SLOT OVR AREA DURG MORNING THEN EXPECT BKN-OVC
STRATOCU BY LATE MORN WITH SFC HEATING AND WRAP AROUND MOISTURE. MID
LVL TROF ROTATES ACROSS SRN WI AND NR IL DURG MID AND LATE
AFTERNOON. SHRA FCST TO DVLP WITH UVV AHEAD OF APPROACHING TROF. AS
MOMENTUM FM 40-45KT WNDS WITHIN 1KM OF SFC STARTS TO MIX DOWN DURG
FRI MORNING GUSTS OF AROUND 35KT LIKELY FM LATE MORNING THRU MID
AFTERNOON. WNDS DIMINISH BY LATE AFTERNOON AS PRES GRADIENT RELAXES
SOMEWHAT...THEN VEERS TO W AFT MID LVL TROF PASSES THRU BY SUNSET.

TRS

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
.IL...WIND ADVSRY TODAY.
.IN...WIND ADVSRY TODAY.
.LM...GL WRNG NEARSHORE WATERS TODAY.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
430 PM CST THU MAR 30 2006

ILZ003>006-008-010>014-019>022-023-032-033-039-INZ001-002-010-011-
019-311030-
WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-LEE-DE KALB-KANE-DU PAGE-COOK-
LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-IROQUOIS-FORD-
LAKE IN-PORTER-NEWTON-JASPER-BENTON-
430 PM CST THU MAR 30 2006

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

.DAY ONE... TONIGHT

A SLIGHT RISK OF SEVERE THUNDERSTORMS EXISTS ACROSS NORTHERN
ILLINOIS AND NORTHWEST INDIANA TONIGHT...WITH THE GREATEST RISK
BETWEEN 9 PM AND 3 AM. DAMAGING WINDS ARE EXPECTED TO BE THE PRIMARY
THREAT.

.DAYS TWO THROUGH SEVEN... FRIDAY THROUGH WEDNESDAY

THERE IS A CHANCE OF THUNDERSTORMS FRIDAY MORNING...BUT ADDITIONAL
SEVERE WEATHER IS NOT ANTICIPATED AT THIS TIME.

THERE IS ANOTHER CHANCE OF THUNDERSTORMS SUNDAY AND SUNDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS EVENING AND OVERNIGHT.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE
NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO (LOWER CASE)

LMZ740>745-766-311030-
WINTHROP HARBOR IL TO MICHIGAN CITY IN-
LAKE MICHIGAN-
430 PM CST THU MAR 30 2006

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

.DAY ONE... TONIGHT

THUNDERSTORMS ARE EXPECTED ACROSS SOUTHERN LAKE MICHIGAN LATE THIS
EVENING AND OVERNIGHT. SOME OF THESE THUNDERSTORMS MAY PRODUCE
STRONG WINDS.

.DAYS TWO THROUGH SEVEN... FRIDAY THROUGH WEDNESDAY

THERE IS A CHANCE OF THUNDERSTORMS FRIDAY MORNING AND ANOTHER
CHANCE OF THUNDERSTORMS SUNDAY AND SUNDAY NIGHT.

A SMALL CRAFT ADVISORY IS IN EFFECT FROM TONIGHT UNTIL SATURDAY
MORNING.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE
NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO (LOWER CASE)