Alert archive / Illinois / Wind Advisories in 2007
Wind Advisory 8, NWS Chicago, IL
NWS Chicago, IL issued this wind advisory at Dec 22, 2007, 5:48 PM EST for 5 counties in Indiana; 16 counties in Illinois. It took effect at Dec 23, 2007, 5:14 AM EST. It was in force for 23 hr.
The area
The counties it named.
The facts
- Issued
- Dec 22, 2007, 5:48 PM EST (22:48 UTC)
- In effect from
- Dec 23, 2007, 5:14 AM EST
- Expired
- Dec 24, 2007, 3:51 AM EST
- In force
- 23 hr
- Issued by
- NWS Chicago, IL
All 21 counties
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
The radar
The Chicago radar (KLOT), 15 km from the middle of the area, began a volume at 22:50 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 10.8 hours before the alert went out and 156 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 607 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 242 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS73 KLOT 222248 NPWLOT URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 448 PM CST SAT DEC 22 2007 ILZ003>005-011-012-230700- /O.NEW.KLOT.WI.Y.0008.071223T1200Z-071224T0300Z/ /O.CON.KLOT.FG.Y.0017.000000T0000Z-071223T0000Z/ WINNEBAGO-BOONE-MCHENRY-DE KALB-KANE- INCLUDING THE CITIES OF...ROCKFORD...WOODSTOCK...DEKALB...AURORA 448 PM CST SAT DEC 22 2007 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS AFTERNOON... ...WIND ADVISORY IN EFFECT FROM 6 AM TO 9 PM CST SUNDAY... THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT FROM 6 AM TO 9 PM CST SUNDAY. A DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS AFTERNOON. AREAS OF DENSE FOG WILL CONTINUE TO REDUCE VISIBILITIES TO ONE QUARTER MILE OR LESS...PARTICULARLY OVER EXTREME NORTHERN ILLINOIS THROUGH LATE AFTERNOON. THE POOR VISIBILITIES WILL GRADUALLY IMPROVE LATE THIS AFTERNOON AND THIS EVENING AS RAIN MOVES IN FROM THE SOUTH AND SURFACE WINDS INCREASE. A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE REDUCED TO LESS THAN ONE QUARTER MILE. DRIVE VERY CAREFULLY AND ALLOW EXTRA TIME TO ARRIVE AT YOUR DESTINATION. A STRONG COLD FRONT WILL SWEEP ACROSS THE REGION EARLY TOMORROW MORNING. WINDS WILL QUICKLY SHIFT FROM SOUTHERLY TO WESTERLY AND INCREASE TO 30 TO 35 MPH WITH FREQUENT GUSTS TO 40 TO 45 MPH. A WIND ADVISORY MEANS THAT EITHER SUSTAINED WINDS OF 30 TO 39 MPH ARE EXPECTED TO LAST AT LEAST AN HOUR...OR THAT WINDS WILL GUST TO BETWEEN 45 AND 57 MPH. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. $$ ILZ006-013-014-230700- /O.NEW.KLOT.WI.Y.0008.071223T1200Z-071224T0300Z/ /O.CON.KLOT.FG.Y.0018.000000T0000Z-071223T0000Z/ LAKE ILLINOIS-DUPAGE-COOK- INCLUDING THE CITIES OF...WAUKEGAN...CHICAGO 448 PM CST SAT DEC 22 2007 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS AFTERNOON... ...WIND ADVISORY IN EFFECT FROM 6 AM TO 9 PM CST SUNDAY... THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT FROM 6 AM TO 9 PM CST SUNDAY. A DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS AFTERNOON. AREAS OF DENSE FOG WILL CONTINUE TO REDUCE VISIBILITIES TO ONE QUARTER MILE OR LESS OVER PORTIONS OF NORTHEAST ILLINOIS THROUGH THIS AFTERNOON. THE AREAS THAT WILL CONTINUE TO EXPERIENCE THE MOST WIDESPREAD DENSE FOG THROUGH THIS AFTERNOON ARE GENERALLY NORTH OF INTERSTATE 88. THE POOR VISIBILITIES WILL GRADUALLY IMPROVE LATE THIS AFTERNOON AND THIS EVENING AS RAIN MOVES IN FROM THE SOUTH AND SURFACE WINDS INCREASE. A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE REDUCED TO LESS THAN ONE QUARTER MILE. DRIVE VERY CAREFULLY AND ALLOW EXTRA TIME TO ARRIVE AT YOUR DESTINATION. A STRONG COLD FRONT WILL SWEEP ACROSS THE REGION EARLY TOMORROW MORNING. WINDS WILL QUICKLY SHIFT FROM SOUTHERLY TO WESTERLY AND INCREASE TO 30 TO 35 MPH WITH FREQUENT GUSTS TO 40 TO 45 MPH. A WIND ADVISORY MEANS THAT EITHER SUSTAINED WINDS OF 30 TO 39 MPH ARE EXPECTED TO LAST AT LEAST AN HOUR...OR THAT WINDS WILL GUST TO BETWEEN 45 AND 57 MPH. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. $$ ILZ008-010-230700- /O.NEW.KLOT.WI.Y.0008.071223T1200Z-071224T0000Z/ /O.CON.KLOT.FG.Y.0017.000000T0000Z-071223T0000Z/ OGLE-LEE- INCLUDING THE CITIES OF...OREGON...DIXON 448 PM CST SAT DEC 22 2007 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS AFTERNOON... ...WIND ADVISORY IN EFFECT FROM 6 AM TO 6 PM CST SUNDAY... THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT FROM 6 AM TO 6 PM CST SUNDAY. A DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS AFTERNOON. AREAS OF DENSE FOG WILL CONTINUE TO REDUCE VISIBILITIES TO ONE QUARTER MILE OR LESS OVER MUCH OF EXTREME NORTHERN ILLINOIS THROUGH THIS AFTERNOON. THE POOR VISIBILITIES WILL GRADUALLY IMPROVE LATE THIS AFTERNOON AND THIS EVENING AS RAIN MOVES IN FROM THE SOUTH AND SURFACE WINDS INCREASE. A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE REDUCED TO LESS THAN ONE QUARTER MILE. DRIVE VERY CAREFULLY AND ALLOW EXTRA TIME TO ARRIVE AT YOUR DESTINATION. A STRONG COLD FRONT WILL SWEEP ACROSS THE REGION EARLY TOMORROW MORNING. WINDS WILL QUICKLY SHIFT FROM SOUTHERLY TO WESTERLY AND INCREASE TO 30 TO 35 MPH WITH FREQUENT GUSTS TO 40 TO 45 MPH. A WIND ADVISORY MEANS THAT EITHER SUSTAINED WINDS OF 30 TO 39 MPH ARE EXPECTED TO LAST AT LEAST AN HOUR...OR THAT WINDS WILL GUST TO BETWEEN 45 AND 57 MPH. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. $$ ILZ019-021-032-033-039-INZ019-230700- /O.NEW.KLOT.WI.Y.0008.071223T1200Z-071224T0000Z/ LA SALLE-GRUNDY-LIVINGSTON-IROQUOIS-FORD-BENTON- INCLUDING THE CITIES OF...OTTAWA...MORRIS...PONTIAC...WATSEKA... PAXTON...FOWLER 448 PM CST SAT DEC 22 2007 /548 PM EST SAT DEC 22 2007/ ...WIND ADVISORY IN EFFECT FROM 6 AM CST /7 AM EST/ TO 6 PM CST /7 PM EST/ SUNDAY... THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT FROM 6 AM CST /7 AM EST/ TO 6 PM CST /7 PM EST/ SUNDAY. A STRONG COLD FRONT WILL SWEEP ACROSS THE REGION EARLY TOMORROW MORNING. WINDS WILL QUICKLY SHIFT FROM SOUTHERLY TO WESTERLY AND INCREASE TO 30 TO 35 MPH WITH FREQUENT GUSTS TO 40 TO 45 MPH.. A WIND ADVISORY MEANS THAT EITHER SUSTAINED WINDS OF 30 TO 39 MPH ARE EXPECTED TO LAST AT LEAST AN HOUR...OR THAT WINDS WILL GUST TO BETWEEN 45 AND 57 MPH. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. $$ ILZ020-022-023-INZ001-002-010-011-230700- /O.NEW.KLOT.WI.Y.0008.071223T1200Z-071224T0300Z/ KENDALL-WILL-KANKAKEE-LAKE INDIANA-PORTER-NEWTON-JASPER- INCLUDING THE CITIES OF...OSWEGO...JOLIET...KANKAKEE...GARY... VALPARAISO...MOROCCO...RENSSELAER 448 PM CST SAT DEC 22 2007 ...WIND ADVISORY IN EFFECT FROM 6 AM TO 9 PM CST SUNDAY... THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT FROM 6 AM TO 9 PM CST SUNDAY. A STRONG COLD FRONT WILL SWEEP ACROSS THE REGION EARLY TOMORROW MORNING. WINDS WILL QUICKLY SHIFT FROM SOUTHERLY TO WESTERLY AND INCREASE TO 30 TO 35 MPH WITH FREQUENT GUSTS TO 40 TO 45 MPH.. A WIND ADVISORY MEANS THAT EITHER SUSTAINED WINDS OF 30 TO 39 MPH ARE EXPECTED TO LAST AT LEAST AN HOUR...OR THAT WINDS WILL GUST TO BETWEEN 45 AND 57 MPH. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. $$ KREIN
8 follow-up statements
000 WWUS73 KLOT 230005 NPWLOT URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 605 PM CST SAT DEC 22 2007 ILZ003>005-011-012-230815- /O.CAN.KLOT.FG.Y.0017.000000T0000Z-071223T0000Z/ /O.CON.KLOT.WI.Y.0008.071223T1200Z-071224T0300Z/ WINNEBAGO-BOONE-MCHENRY-DE KALB-KANE- INCLUDING THE CITIES OF...ROCKFORD...WOODSTOCK...DEKALB...AURORA 605 PM CST SAT DEC 22 2007 ...WIND ADVISORY REMAINS IN EFFECT FROM 6 AM TO 9 PM CST SUNDAY... ...DENSE FOG ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN CHICAGO HAS CANCELLED THE DENSE FOG ADVISORY. WIDESPREAD FOG REMAINS OVER THE REGION...BUT ONLY ISOLATED AREAS WITH VISIBILITY OF ONE QUARTER TO ONE HALF MILE REMAIN. VISIBILITY SHOULD CONTINUE TO SLOWLY IMPROVE THROUGH THE EVENING AS SURFACE WIND SPEEDS INCREASE IN RESPONSE TO THE APPROACHING COLD FRONT. A WIND ADVISORY REMAINS IN EFFECT FROM 6 AM TO 9 PM CST SUNDAY. A STRONG COLD FRONT WILL SWEEP ACROSS THE REGION EARLY TOMORROW MORNING. WINDS WILL QUICKLY SHIFT FROM SOUTHERLY TO WESTERLY AND INCREASE TO 30 TO 35 MPH WITH FREQUENT GUSTS TO 40 TO 45 MPH. A WIND ADVISORY MEANS THAT EITHER SUSTAINED WINDS OF 30 TO 39 MPH ARE EXPECTED TO LAST AT LEAST AN HOUR...OR THAT WINDS WILL GUST TO BETWEEN 45 AND 57 MPH. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. $$ ILZ006-013-014-230815- /O.CAN.KLOT.FG.Y.0018.000000T0000Z-071223T0000Z/ /O.CON.KLOT.WI.Y.0008.071223T1200Z-071224T0300Z/ LAKE ILLINOIS-DUPAGE-COOK- INCLUDING THE CITIES OF...WAUKEGAN...CHICAGO 605 PM CST SAT DEC 22 2007 ...WIND ADVISORY REMAINS IN EFFECT FROM 6 AM TO 9 PM CST SUNDAY... ...DENSE FOG ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN CHICAGO HAS CANCELLED THE DENSE FOG ADVISORY. WIDESPREAD FOG REMAINS OVER THE REGION...BUT ONLY ISOLATED AREAS WITH VISIBILITY OF ONE QUARTER TO ONE HALF MILE REMAIN. VISIBILITY SHOULD CONTINUE TO SLOWLY IMPROVE THROUGH THE EVENING AS SURFACE WIND SPEEDS INCREASE IN RESPONSE TO THE APPROACHING COLD FRONT. A WIND ADVISORY REMAINS IN EFFECT FROM 6 AM TO 9 PM CST SUNDAY. A STRONG COLD FRONT WILL SWEEP ACROSS THE REGION EARLY TOMORROW MORNING. WINDS WILL QUICKLY SHIFT FROM SOUTHERLY TO WESTERLY AND INCREASE TO 30 TO 35 MPH WITH FREQUENT GUSTS TO 40 TO 45 MPH. A WIND ADVISORY MEANS THAT EITHER SUSTAINED WINDS OF 30 TO 39 MPH ARE EXPECTED TO LAST AT LEAST AN HOUR...OR THAT WINDS WILL GUST TO BETWEEN 45 AND 57 MPH. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. $$ ILZ008-010-230815- /O.CAN.KLOT.FG.Y.0017.000000T0000Z-071223T0000Z/ /O.CON.KLOT.WI.Y.0008.071223T1200Z-071224T0000Z/ OGLE-LEE- INCLUDING THE CITIES OF...OREGON...DIXON 605 PM CST SAT DEC 22 2007 ...WIND ADVISORY REMAINS IN EFFECT FROM 6 AM TO 6 PM CST SUNDAY... ...DENSE FOG ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN CHICAGO HAS CANCELLED THE DENSE FOG ADVISORY. WIDESPREAD FOG REMAINS OVER THE REGION...BUT ONLY ISOLATED AREAS WITH VISIBILITY OF ONE QUARTER TO ONE HALF MILE REMAIN. VISIBILITY SHOULD CONTINUE TO SLOWLY IMPROVE THROUGH THE EVENING AS SURFACE WIND SPEEDS INCREASE IN RESPONSE TO THE APPROACHING COLD FRONT. A WIND ADVISORY REMAINS IN EFFECT FROM 6 AM TO 6 PM CST SUNDAY. A STRONG COLD FRONT WILL SWEEP ACROSS THE REGION EARLY TOMORROW MORNING. WINDS WILL QUICKLY SHIFT FROM SOUTHERLY TO WESTERLY AND INCREASE TO 30 TO 35 MPH WITH FREQUENT GUSTS TO 40 TO 45 MPH. A WIND ADVISORY MEANS THAT EITHER SUSTAINED WINDS OF 30 TO 39 MPH ARE EXPECTED TO LAST AT LEAST AN HOUR...OR THAT WINDS WILL GUST TO BETWEEN 45 AND 57 MPH. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. $$ ILZ019-021-032-033-039-INZ019-230815- /O.CON.KLOT.WI.Y.0008.071223T1200Z-071224T0000Z/ LA SALLE-GRUNDY-LIVINGSTON-IROQUOIS-FORD-BENTON- INCLUDING THE CITIES OF...OTTAWA...MORRIS...PONTIAC...WATSEKA... PAXTON...FOWLER 605 PM CST SAT DEC 22 2007 /705 PM EST SAT DEC 22 2007/ ...WIND ADVISORY REMAINS IN EFFECT FROM 6 AM CST /7 AM EST/ TO 6 PM CST /7 PM EST/ SUNDAY... A WIND ADVISORY REMAINS IN EFFECT FROM 6 AM CST /7 AM EST/ TO 6 PM CST /7 PM EST/ SUNDAY. A STRONG COLD FRONT WILL SWEEP ACROSS THE REGION EARLY TOMORROW MORNING. WINDS WILL QUICKLY SHIFT FROM SOUTHERLY TO WESTERLY AND INCREASE TO 30 TO 35 MPH WITH FREQUENT GUSTS TO 40 TO 45 MPH. A WIND ADVISORY MEANS THAT EITHER SUSTAINED WINDS OF 30 TO 39 MPH ARE EXPECTED TO LAST AT LEAST AN HOUR...OR THAT WINDS WILL GUST TO BETWEEN 45 AND 57 MPH. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. $$ ILZ020-022-023-INZ001-002-010-011-230815- /O.CON.KLOT.WI.Y.0008.071223T1200Z-071224T0300Z/ KENDALL-WILL-KANKAKEE-LAKE INDIANA-PORTER-NEWTON-JASPER- INCLUDING THE CITIES OF...OSWEGO...JOLIET...KANKAKEE...GARY... VALPARAISO...MOROCCO...RENSSELAER 605 PM CST SAT DEC 22 2007 ...WIND ADVISORY REMAINS IN EFFECT FROM 6 AM TO 9 PM CST SUNDAY... A WIND ADVISORY REMAINS IN EFFECT FROM 6 AM TO 9 PM CST SUNDAY. A STRONG COLD FRONT WILL SWEEP ACROSS THE REGION EARLY TOMORROW MORNING. WINDS WILL QUICKLY SHIFT FROM SOUTHERLY TO WESTERLY AND INCREASE TO 30 TO 35 MPH WITH FREQUENT GUSTS TO 40 TO 45 MPH. A WIND ADVISORY MEANS THAT EITHER SUSTAINED WINDS OF 30 TO 39 MPH ARE EXPECTED TO LAST AT LEAST AN HOUR...OR THAT WINDS WILL GUST TO BETWEEN 45 AND 57 MPH. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. $$ KREIN
000 WWUS73 KLOT 230820 NPWLOT URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 220 AM CST SUN DEC 23 2007 ILZ003>006-011>014-020-022-023-INZ001-002-010-011-231630- /O.CON.KLOT.WI.Y.0008.071223T1200Z-071224T0300Z/ WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-DE KALB-KANE-DUPAGE-COOK- KENDALL-WILL-KANKAKEE-LAKE INDIANA-PORTER-NEWTON-JASPER- INCLUDING THE CITIES OF...ROCKFORD...WOODSTOCK...WAUKEGAN... DEKALB...AURORA...CHICAGO...OSWEGO...JOLIET...KANKAKEE...GARY... VALPARAISO...MOROCCO...RENSSELAER 220 AM CST SUN DEC 23 2007 ...WIND ADVISORY REMAINS IN EFFECT FROM 6 AM THIS MORNING TO 9 PM CST THIS EVENING... A WIND ADVISORY REMAINS IN EFFECT FROM 6 AM THIS MORNING TO 9 PM CST THIS EVENING. STRONG LOW PRESSURE WILL CONTINUE TO DEEPEN AS IT LIFTS ACROSS THE MIDWEST TODAY. THE TIGHT PRESSURE GRADIENT ASSOCIATED WITH THIS LOW WILL RESULT IN VERY WINDY CONDITIONS ACROSS NORTHERN ILLINOIS AND NORTHWEST INDIANA THROUGH THIS EVENING. WINDS WILL SHIFT TO THE WEST WITH THE PASSAGE OF A COLD FRONT EARLY THIS MORNING...AND WILL INCREASE TO 30 TO 35 MPH WITH FREQUENT GUSTS TO 40 TO 45 MPH. A WIND ADVISORY MEANS THAT EITHER SUSTAINED WINDS OF 30 TO 39 MPH ARE EXPECTED TO LAST AT LEAST AN HOUR...OR THAT WINDS WILL GUST TO BETWEEN 45 AND 57 MPH. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. $$ ILZ008-010-019-021-032-033-039-INZ019-231630- /O.CON.KLOT.WI.Y.0008.071223T1200Z-071224T0000Z/ OGLE-LEE-LA SALLE-GRUNDY-LIVINGSTON-IROQUOIS-FORD-BENTON- INCLUDING THE CITIES OF...OREGON...DIXON...OTTAWA...MORRIS... PONTIAC...WATSEKA...PAXTON...FOWLER 220 AM CST SUN DEC 23 2007 /320 AM EST SUN DEC 23 2007/ ...WIND ADVISORY REMAINS IN EFFECT FROM 6 AM CST /7 AM EST/ THIS MORNING TO 6 PM CST /7 PM EST/ THIS AFTERNOON... A WIND ADVISORY REMAINS IN EFFECT FROM 6 AM CST /7 AM EST/ THIS MORNING TO 6 PM CST /7 PM EST/ THIS AFTERNOON. STRONG LOW PRESSURE WILL CONTINUE TO DEEPEN AS IT LIFTS ACROSS THE MIDWEST TODAY. THE TIGHT PRESSURE GRADIENT ASSOCIATED WITH THIS LOW WILL RESULT IN VERY WINDY CONDITIONS ACROSS NORTHERN ILLINOIS AND NORTHWEST INDIANA THROUGH THE DAY. WINDS WILL SHIFT TO THE WEST WITH THE PASSAGE OF A COLD FRONT EARLY THIS MORNING...AND WILL INCREASE TO 30 TO 35 MPH WITH FREQUENT GUSTS TO 40 TO 45 MPH. A WIND ADVISORY MEANS THAT EITHER SUSTAINED WINDS OF 30 TO 39 MPH ARE EXPECTED TO LAST AT LEAST AN HOUR...OR THAT WINDS WILL GUST TO BETWEEN 45 AND 57 MPH. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. $$ RATZER
000 WWUS73 KLOT 231016 NPWLOT URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 416 AM CST SUN DEC 23 2007 ILZ003>006-011>014-020-022-023-INZ001-002-010-011-231830- /O.EXT.KLOT.WI.Y.0008.071223T1014Z-071224T0300Z/ WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-DE KALB-KANE-DUPAGE-COOK- KENDALL-WILL-KANKAKEE-LAKE INDIANA-PORTER-NEWTON-JASPER- INCLUDING THE CITIES OF...ROCKFORD...WOODSTOCK...WAUKEGAN... DEKALB...AURORA...CHICAGO...OSWEGO...JOLIET...KANKAKEE...GARY... VALPARAISO...MOROCCO...RENSSELAER 416 AM CST SUN DEC 23 2007 ...WIND ADVISORY NOW IN EFFECT UNTIL 9 PM CST THIS EVENING... THE WIND ADVISORY IS NOW IN EFFECT UNTIL 9 PM CST THIS EVENING. STRONG LOW PRESSURE WILL CONTINUE TO DEEPEN AS IT LIFTS ACROSS THE NORTHERN GREAT LAKES REGION TODAY. THE TIGHT PRESSURE GRADIENT ASSOCIATED WITH THIS LOW WILL RESULT IN VERY WINDY CONDITIONS ACROSS NORTHERN ILLINOIS AND NORTHWEST INDIANA THROUGH THIS EVENING. WEST WINDS OF 20 TO 30 MPH WILL INCREASE TO 30 TO 35 MPH THIS MORNING WITH FREQUENT GUSTS TO 40 TO 45 MPH. A WIND ADVISORY MEANS THAT EITHER SUSTAINED WINDS OF 30 TO 39 MPH ARE EXPECTED TO LAST AT LEAST AN HOUR...OR THAT WINDS WILL GUST TO BETWEEN 45 AND 57 MPH. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. $$ ILZ008-010-019-021-032-033-039-INZ019-231830- /O.EXT.KLOT.WI.Y.0008.071223T1016Z-071224T0000Z/ OGLE-LEE-LA SALLE-GRUNDY-LIVINGSTON-IROQUOIS-FORD-BENTON- INCLUDING THE CITIES OF...OREGON...DIXON...OTTAWA...MORRIS... PONTIAC...WATSEKA...PAXTON...FOWLER 416 AM CST SUN DEC 23 2007 /516 AM EST SUN DEC 23 2007/ ...WIND ADVISORY NOW IN EFFECT UNTIL 6 PM CST /7 PM EST/ THIS AFTERNOON... THE WIND ADVISORY IS NOW IN EFFECT UNTIL 6 PM CST /7 PM EST/ THIS AFTERNOON. STRONG LOW PRESSURE WILL CONTINUE TO DEEPEN AS IT LIFTS ACROSS THE NORTHERN GREAT LAKES REGION TODAY. THE TIGHT PRESSURE GRADIENT ASSOCIATED WITH THIS LOW WILL RESULT IN VERY WINDY CONDITIONS ACROSS NORTHERN ILLINOIS AND NORTHWEST INDIANA THROUGH THE DAY. WEST WINDS WILL INCREASE TO 30 TO 35 MPH THIS MORNING WITH FREQUENT GUSTS TO 40 TO 45 MPH. A WIND ADVISORY MEANS THAT EITHER SUSTAINED WINDS OF 30 TO 39 MPH ARE EXPECTED TO LAST AT LEAST AN HOUR...OR THAT WINDS WILL GUST TO BETWEEN 45 AND 57 MPH. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. $$ RATZER
000 WWUS73 KLOT 231632 NPWLOT URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 1032 AM CST SUN DEC 23 2007 .DEEP LOW PRESSURE OVER NORTHEAST WISCONSIN WILL SLOWLY MOVE NORTHEAST ACROSS THE UPPER LAKES TODAY AND BEGIN TO WEAKEN TONIGHT...AS IT REACHES WESTERN QUEBEC MONDAY MORNING. A TIGHT PRESSURE GRADIENT ALONG WITH VERY COLD AIR SPREADING ACROSS THE LAKES REGION...WILL RESULT IN STRONG WINDS INTO THIS EVENING. ILZ003>006-011>014-020-022-023-INZ001-002-010-011-240045- /O.CON.KLOT.WI.Y.0008.000000T0000Z-071224T0300Z/ WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-DE KALB-KANE-DUPAGE-COOK- KENDALL-WILL-KANKAKEE-LAKE INDIANA-PORTER-NEWTON-JASPER- INCLUDING THE CITIES OF...ROCKFORD...WOODSTOCK...WAUKEGAN... DEKALB...AURORA...CHICAGO...OSWEGO...JOLIET...KANKAKEE...GARY... VALPARAISO...MOROCCO...RENSSELAER 1032 AM CST SUN DEC 23 2007 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS EVENING... A WIND ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS EVENING. WEST WINDS OF 25 TO 35 MPH WITH GUSTS AS HIGH AS 45 MPH WILL CONTINUE INTO THIS AFTERNOON AND BEGIN TO DIMINISH SOME THIS EVENING. WINDS OF 20 TO 30 MPH WILL CONTINUE INTO THE OVERNIGHT HOURS. A WIND ADVISORY MEANS THAT EITHER SUSTAINED WINDS OF 30 TO 39 MPH ARE EXPECTED TO LAST AT LEAST AN HOUR...OR THAT WINDS WILL GUST TO BETWEEN 45 AND 57 MPH. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. $$ ILZ008-010-019-021-032-033-039-INZ019-240000- /O.CON.KLOT.WI.Y.0008.000000T0000Z-071224T0000Z/ OGLE-LEE-LA SALLE-GRUNDY-LIVINGSTON-IROQUOIS-FORD-BENTON- INCLUDING THE CITIES OF...OREGON...DIXON...OTTAWA...MORRIS... PONTIAC...WATSEKA...PAXTON...FOWLER 1032 AM CST SUN DEC 23 2007 /1132 AM EST SUN DEC 23 2007/ ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST /7 PM EST/ THIS AFTERNOON... A WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST /7 PM EST/ THIS AFTERNOON. WEST WINDS OF 25 TO 35 MPH WITH GUSTS AS HIGH AS 45 MPH WILL CONTINUE INTO THIS AFTERNOON AND BEGIN TO DIMINISH LATE THIS AFTERNOON. WINDS OF 20 TO 30 MPH WILL CONTINUE INTO THE OVERNIGHT HOURS. A WIND ADVISORY MEANS THAT EITHER SUSTAINED WINDS OF 30 TO 39 MPH ARE EXPECTED TO LAST AT LEAST AN HOUR...OR THAT WINDS WILL GUST TO BETWEEN 45 AND 57 MPH. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. $$
000 WWUS73 KLOT 232148 NPWLOT URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 348 PM CST SUN DEC 23 2007 .DEEP LOW PRESSURE OVER NORTHERN MICHIGAN...WILL SLOWLY MOVE NORTHEAST AND BEGIN TO WEAKEN TONIGHT...AS IT REACHES WESTERN QUEBEC MONDAY MORNING. A TIGHT PRESSURE GRADIENT ACROSS THE REGION WILL SLOWLY BEGIN TO RELAX THIS EVENING. ILZ003>006-011>014-020-022-023-INZ001-002-010-011-240300- /O.CON.KLOT.WI.Y.0008.000000T0000Z-071224T0300Z/ WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-DE KALB-KANE-DUPAGE-COOK- KENDALL-WILL-KANKAKEE-LAKE INDIANA-PORTER-NEWTON-JASPER- INCLUDING THE CITIES OF...ROCKFORD...WOODSTOCK...WAUKEGAN... DEKALB...AURORA...CHICAGO...OSWEGO...JOLIET...KANKAKEE...GARY... VALPARAISO...MOROCCO...RENSSELAER 348 PM CST SUN DEC 23 2007 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS EVENING... A WIND ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS EVENING. WEST WINDS OF 25 TO 35 MPH WITH GUSTS AS HIGH AS 45 MPH WILL SLOWLY BEGIN TO DIMINISH THIS EVENING. WINDS OF 20 TO 30 MPH WILL CONTINUE INTO THE OVERNIGHT HOURS. A WIND ADVISORY MEANS THAT EITHER SUSTAINED WINDS OF 30 TO 39 MPH ARE EXPECTED TO LAST AT LEAST AN HOUR...OR THAT WINDS WILL GUST TO BETWEEN 45 AND 57 MPH. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. $$ ILZ008-010-019-021-032-033-039-INZ019-240000- /O.CON.KLOT.WI.Y.0008.000000T0000Z-071224T0000Z/ OGLE-LEE-LA SALLE-GRUNDY-LIVINGSTON-IROQUOIS-FORD-BENTON- INCLUDING THE CITIES OF...OREGON...DIXON...OTTAWA...MORRIS... PONTIAC...WATSEKA...PAXTON...FOWLER 348 PM CST SUN DEC 23 2007 /448 PM EST SUN DEC 23 2007/ ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST /7 PM EST/ THIS AFTERNOON... A WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST /7 PM EST/ THIS AFTERNOON. WEST WINDS OF 25 TO 35 MPH WITH GUSTS AS HIGH AS 45 MPH WILL BEGIN TO DIMINISH LATE THIS AFTERNOON INTO THIS EVENING. WINDS OF 20 TO 30 MPH WILL CONTINUE INTO THE OVERNIGHT HOURS. A WIND ADVISORY MEANS THAT EITHER SUSTAINED WINDS OF 30 TO 39 MPH ARE EXPECTED TO LAST AT LEAST AN HOUR...OR THAT WINDS WILL GUST TO BETWEEN 45 AND 57 MPH. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. $$
000 WWUS73 KLOT 232355 NPWLOT URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 555 PM CST SUN DEC 23 2007 .DEEP LOW PRESSURE OVER NORTHERN MICHIGAN...WILL SLOWLY MOVE NORTHEAST AND BEGIN TO WEAKEN TONIGHT. THE STRONG PRESSURE GRADIENT ACROSS THE REGION WILL SLOWLY BEGIN TO RELAX THIS EVENING. ILZ008-010-019-021-032-033-039-INZ019-240100- /O.EXP.KLOT.WI.Y.0008.000000T0000Z-071224T0000Z/ OGLE-LEE-LA SALLE-GRUNDY-LIVINGSTON-IROQUOIS-FORD-BENTON- INCLUDING THE CITIES OF...OREGON...DIXON...OTTAWA...MORRIS... PONTIAC...WATSEKA...PAXTON...FOWLER 555 PM CST SUN DEC 23 2007 /655 PM EST SUN DEC 23 2007/ ...WIND ADVISORY WILL EXPIRE AT 6 PM CST /7 PM EST/ THIS AFTERNOON... THE WIND ADVISORY WILL EXPIRE AT 6 PM CST /7 PM EST/ THIS AFTERNOON. WINDS ARE BEGINNING TO WEAKEN AND HAVE DROPPED BELOW ADVISORY CRITERIA. HOWEVER...CONDITIONS WILL REMAIN QUITE BLUSTERY TONIGHT. $$ ILZ003>006-011>014-020-022-023-INZ001-002-010-011-240300- /O.CON.KLOT.WI.Y.0008.000000T0000Z-071224T0300Z/ WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-DE KALB-KANE-DUPAGE-COOK- KENDALL-WILL-KANKAKEE-LAKE INDIANA-PORTER-NEWTON-JASPER- INCLUDING THE CITIES OF...ROCKFORD...WOODSTOCK...WAUKEGAN... DEKALB...AURORA...CHICAGO...OSWEGO...JOLIET...KANKAKEE...GARY... VALPARAISO...MOROCCO...RENSSELAER 555 PM CST SUN DEC 23 2007 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS EVENING... A WIND ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS EVENING. WEST WINDS OF 25 TO 35 MPH WITH GUSTS AS HIGH AS 45 MPH WILL SLOWLY BEGIN TO DIMINISH THROUGH THE COURSE OF THE EVENING. WINDS OF 20 TO 30 MPH WILL CONTINUE INTO THE OVERNIGHT HOURS. A WIND ADVISORY MEANS THAT EITHER SUSTAINED WINDS OF 30 TO 39 MPH ARE EXPECTED TO LAST AT LEAST AN HOUR...OR THAT WINDS WILL GUST TO BETWEEN 45 AND 57 MPH. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. $$ KREIN
000 WWUS73 KLOT 240223 NPWLOT URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 823 PM CST SUN DEC 23 2007 .DEEP LOW PRESSURE OVER NORTHERN MICHIGAN...WILL SLOWLY MOVE NORTHEAST AND BEGIN TO WEAKEN TONIGHT. THE STRONG PRESSURE GRADIENT ACROSS THE REGION WILL SLOWLY BEGIN TO RELAX THIS EVENING. ILZ008-010-019-021-032-240900- /O.EXB.KLOT.WI.Y.0008.000000T0000Z-071224T0900Z/ OGLE-LEE-LA SALLE-GRUNDY-LIVINGSTON- INCLUDING THE CITIES OF...OREGON...DIXON...OTTAWA...MORRIS... PONTIAC 823 PM CST SUN DEC 23 2007 ...WIND ADVISORY IN EFFECT UNTIL 3 AM CST MONDAY... THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT UNTIL 3 AM CST MONDAY. WEST WINDS OF 25 TO 35 MPH WITH OCCASIONAL GUSTS AS HIGH AS 45 MPH WILL CONTINUE INTO THE EARLY MORNING HOURS. WINDS ARE THEN EXPECTED TO GRADUALLY WEAKEN TO 15 TO 25 MPH DURING THE PREDAWN HOURS. A WIND ADVISORY MEANS THAT EITHER SUSTAINED WINDS OF 30 TO 39 MPH ARE EXPECTED TO LAST AT LEAST AN HOUR...OR THAT WINDS WILL GUST TO BETWEEN 45 AND 57 MPH. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. $$ ILZ003>006-011>014-020-022-023-INZ001-002-010-011-240900- /O.EXT.KLOT.WI.Y.0008.000000T0000Z-071224T0900Z/ WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-DE KALB-KANE-DUPAGE-COOK- KENDALL-WILL-KANKAKEE-LAKE INDIANA-PORTER-NEWTON-JASPER- INCLUDING THE CITIES OF...ROCKFORD...WOODSTOCK...WAUKEGAN... DEKALB...AURORA...CHICAGO...OSWEGO...JOLIET...KANKAKEE...GARY... VALPARAISO...MOROCCO...RENSSELAER 823 PM CST SUN DEC 23 2007 ...WIND ADVISORY NOW IN EFFECT UNTIL 3 AM CST MONDAY... THE WIND ADVISORY IS NOW IN EFFECT UNTIL 3 AM CST MONDAY. WEST WINDS OF 25 TO 35 MPH WITH GUSTS AS HIGH AS 45 MPH WILL CONTINUE INTO THE EARLY MORNING HOURS. WINDS ARE THEN EXPECTED TO GRADUALLY WEAKEN TO 15 TO 25 MPH DURING THE PREDAWN HOURS. A WIND ADVISORY MEANS THAT EITHER SUSTAINED WINDS OF 30 TO 39 MPH ARE EXPECTED TO LAST AT LEAST AN HOUR...OR THAT WINDS WILL GUST TO BETWEEN 45 AND 57 MPH. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. $$ KREIN
000 WWUS73 KLOT 240851 NPWLOT URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 251 AM CST MON DEC 24 2007 ...WINDS DIMINISHING ACROSS THE REGION... .A STRONG LOW PRESSURE SYSTEM CONTINUES TO PULL TO THE NORTHEAST INTO EASTERN CANADA EARLY THIS MORNING...ALLOWING WINDS TO GRADUALLY DIMINISH ACROSS THE MIDWEST AS THE LOW MOVES AWAY. ALTHOUGH IT WILL STILL BE BLUSTERY TODAY...WINDS WILL CONTINUE TO GRADUALLY DIMINISH THROUGH THE DAY. ILZ003>006-008-010>014-019>023-032-INZ001-002-010-011-241000- /O.CAN.KLOT.WI.Y.0008.000000T0000Z-071224T0900Z/ WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-OGLE-LEE-DE KALB-KANE- DUPAGE-COOK-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON- LAKE INDIANA-PORTER-NEWTON-JASPER- INCLUDING THE CITIES OF...ROCKFORD...WOODSTOCK...WAUKEGAN... OREGON...DIXON...DEKALB...AURORA...CHICAGO...OTTAWA...OSWEGO... MORRIS...JOLIET...KANKAKEE...PONTIAC...GARY...VALPARAISO... MOROCCO...RENSSELAER 251 AM CST MON DEC 24 2007 ...WIND ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN CHICAGO HAS CANCELED THE WIND ADVISORY. WINDS HAVE DIMINISHED BELOW ADVISORY CRITERIA THIS MORNING...AS A STRONG AREA OF LOW PRESSURE SLOWLY MOVES AWAY FROM THE MIDWEST. WINDS WILL CONTINUE TO GRADUALLY DIMINISH THROUGH THE DAY. $$ RATZER
What forecasters said that day
The local office's own words before this wind advisory went out, 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 this wind advisory went out at Dec 22, 4:15 PM EST, 1 hour 33 minutes earlier.
Area forecast discussion, Dec 22, 4:15 PM EST, 1 hour 33 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHICAGO IL
315 PM CST SAT DEC 22 2007
.DISCUSSION...REGARDING AFTERNOON ZONES...
315 PM CST
SCENARIO REGARDING MAJOR CYCLOGENESIS TAKING PLACE NEXT 24 HRS HAS
CHGD LTL. ONLY SIG CGS IN INHERITED FCST IS TO ISSUE A WIND ADVRY
FOR ENTR AREA FOR SUN INTO SUN NGT.
REGARDING WIND EVENT...ADVSRY WOULD APPEAR TO BE BORDERLINE EVENT
ATTM. YES...ITS GONNA GET WINDY AND QUITE UNPLEASANT BY ERLY
SUNDAY. LLVL GRADIENT FORCING AND COLD ADVECTION SUPPORT STG
WINDS. HOWEVER FQT HIGH GUSTS WOULD APPEAR MORE LIKELY TO S OF AREA
WHERE DOWNWARD MOMENTUM AND MID/UPR LVL JET AXIS CURLS UNDER UPR LOW
FCST TO MOVE DIRECTLY OVHD OF FA ON SUN.
CURRENT RADAR/SATLT TRENDS SHOW PCPN EXPANDING RPDLY FROM KS NEWD
INTO IA...WITH STG TRANSVERSE BANDING SHOWING UP OVR SERN IA. THIS
IS IN RESPONSE TO RAPID DEEPENING OF UPR LVL SYS LIFTING OUT OF SRN
PLAINS BEGINNING TO INCR OMEGA FIELD DOWNSTREAM OVR MOISTURE RICH
AMS. CURRENT VIS IMAGERY SHOWS THIS VERY WELL WITH INCR IN CLOUD
TOP TEXTURE. IT ALSO SHOWS DVLPG ARC OF CONVECTION FROM NWRN
MO-SERN MO WHERE IT MERGES WITH SQLN THAT EXTENDS SWD INTO WRN LA.
MODELS REMAIN QUITE CONSISTENT IN DVLPG THIS LOW AS IT TRACK OVR CHI
JUST AFT MIDNIGHT...THEN CONTINUES NWD INTO ONTARIO. GIVEN OBVIOUS
DYNAMICS...EXPECT CONVECTION TO SW TO INCR IN COVERAGE AND MOVE
QUICKLY INTO FA FROM SW THIS EVEING...AHD OF MID LVL DRY SLOT. ONCE
LOW PASSES...MOST NOTABLE WX FOR NRN IL/NWRN IND WILL BE WIND AND
FALLING TEMPS. HAVE MADE NO CHGS TO SNOW FCST OVERNIGHT...WITH
PERHAPS AN INCH OR TWO WRN PORTIONS OF AREA...AND GENLY A DUSTING
ELSEWHERE AS COLDER AIR COMES IN AND AREA IS DRY SLOTTED.
24-HR LLVL TRAJECTORY FCST IS BASIS FOR NON-DIURNAL TEMP GRIDS THRU
SUN NGT. THESE SUPPORT 30 F DEG 24 HR TEMP DROPS MOST AREAS. WITH
SYSTEM/S COLD CORE FCST TO PASS THRU FA ON SUNDAY...EXPECT TEMPS TO
SLOWLY FALL THRU MIDDAY...THEN DROP OFF SLIGHTLY WITH NOCTURNAL
COOLING SUN NGT.
MODERATION IN TEMPS MON-CHRISTMAS DAY AS COLD POOL SHIFTS EWD AND
UPR RIDGING DVLPS IN ADVANCE OF NXT SYS.
DON/T HAVE A WHOLE LOT OF CONFIDENCE IN FCST MID-LATE WEEK. TREND
IS CONSISTENT IN KEEPING ACTIVE LOW INDEX PATN GOING.
HOWEVER...EVOLUTION OF ASSD SFC SYSTEMS LOOKS SOMEWHAT
METEOROLOGICALLY INCONSISTENT...WITH GFS ANYWAY. MODEL HAS NEG
TILTED SYSTEMS COMING IN WITH ASSD SFC REFLECTIONS FORMING WELL INTO
COLDER AMS RATHER THAN ALG LLVL BAROCLINIC ZONES. GOOD EXAMPLE IS
WITH PLACEMENT OF WEAK LOW OVR SUX AT 132 HR. BASED ON THIS WILL
MAKE LTL CHG TO FCST BEYOND DAY 4.
MERZLOCK
&&
.AVIATION...
1222 PM CST
RE THE 18Z TAFORS...SURFACE WARM FRONT CONTINUES TO SLOWLY WORK
ITS WAY NORTHWARD INTO FAR NORTHERN IL AT LATE MORNING. WHILE DEW
POINTS ALSO RISING WITH THE WARM FRONT...RISE IN AIR TEMPS ENOUGH
TO CREATE A 1 TO 2 DEG C SPREAD RESULTING IN IMPROVEMENT FROM LIFR
INTO IFR. LOOKING UPSTREAM...IFR STILL PREVAILS WITH CEILINGS AND
VISIBILITIES GENERALLY 004-008 AND 1 3/4-4 RESPECTIVELY SO EXPECT
IFR TO PERSIST INTO THE EVENING. COLD FRONT EXTENDS FROM LOW
PRESSURE OVER FAR WESTERN LAKE SUPERIOR SOUTHWARD ACROSS WESTERN
WI...EASTERN IA...NORTHEAST MO THEN CURVING SOUTHWEST TO MAIN
SURFACE LOW DEEPENING ACROSS NORTHEAST OK.
SOUTHERN PLAINS UPPER LOW LIFTS/SHEARS QUICKLY NORTH-NORTHEAST TO
THE MID MS VALLEY BY LATE TONIGHT AS UPPER LOW CONTINUES TO DROP
SOUTHEASTWARD FROM THE ND-MANITOBA BORDER. SHORT WAVE OUT AHEAD OF
THE SOUTHERN PLAINS UPPER LOW CURRENTLY GENERATING SOME SHOWERS
IN SOUTH CENTRAL MO AND EXPECT SHOWERS IN AREA OF TERMINALS LATE
AFTERNOON AND EARLY EVENING...THEN EXPECT MORE WIDESPREAD RAIN TO
BREAK OUT AS MAIN UPPER TROUGH APPROACHES LATER THIS EVENING.
DEEPENING LOW LIFTS NORTH-NORTHEAST AND ACROSS NORTHEAST IL
OVERNIGHT SWEEPING THE COLD FRONT ACROSS THE TERMINALS PRE DAWN.
STRONG COLD ADVECTION IN LOWER AND MID LEVELS WILL QUICKLY CHANGE
RAIN TO SNOW BUT MID LEVEL DRYING AND SUBSIDENCE QUICKLY SET IN
WITH PASSAGE OF UPPER TROUGH SO WILL QUICKLY DIMINISH TO SNOW
SHOWERS.
MODELS INDICATING 35-40KT WSW WINDS IN MIXED LAYER SUN MORNING
BEHIND COLD FRONT AND EXPECT 30-35KT GUSTS DOWN TO SURFACE BY MID
MORNING.
TRS
&&
.MARINE...
350 AM CST
MAIN MARINE CONCERN IS POTENTIAL FOR STORM FORCE WINDS BEGINNING
EARLY SUNDAY MORNING ACROSS THE SOUTH HALF OF LAKE MICHIGAN AND BY
MIDDAY SUNDAY ACROSS THE FAR NORTH PART OF THE LAKE. MODELS HAVE
TRENDED TO A SLOWER EVOLUTION OF THE SURFACE LOW ASSOCIATED WITH A
STRONG STORM THAT WILL LIFT OUT OF THE SOUTHERN PLAINS
TONIGHT...WHICH IS FAIRLY COMMON FOR DEEPENING/STRENGTHENING SYSTEMS
OF THIS SORT. STRONG PRESSURE RISES WILL BUILD IN BEHIND THE SURFACE
LOW PRESSURE AREA EARLY SUNDAY MORNING AS THE LOW MOVES ACROSS
CENTRAL LAKE MICHIGAN. THE STRENGTHENING SURFACE PRESSURE GRADIENT
WITH THIS DEEPENING STORM COMBINED WITH THE PRESSURE RISES IN THE
WAKE OF THE LOW SHOULD LEAD TO HIGH END GALES OR STORM FORCE WIND
GUSTS ACROSS SOUTHERN LAKE MICHIGAN BY AROUND 12Z...AND FURTHER
NORTH ACROSS CENTRAL/NORTHERN LAKE MICHIGAN BY THE 15Z-18Z TIME
FRAME AS THE SURFACE LOW CONTINUES NORTHWARD TO THE UPPER PENINSULA
OF MICHIGAN. IN ADDITION...STRONG COLD ADVECTION ON THE BACKSIDE OF
THIS SYSTEM COMBINED WITH RELATIVELY WARMER LAKE WATERS WILL PROMOTE
DEEP MIXING WHICH ALSO POINTS TO GOOD POSSIBILITY OF SOME STORM
FORCE WIND GUSTS FROM SUNDAY MORNING THROUGH SUNDAY EVENING. WILL
LIKELY HAVE GALE FORCE WINDS PERSIST INTO EARLY MONDAY MORNING. A
STORM WATCH HAS BEEN ISSUED FOR ALL OF LAKE MICHIGAN FOR SUNDAY.
THE OTHER FORECAST CONCERN THIS MORNING IS DENSE FOG. A DENSE FOG
ADVISORY HAS BEEN ISSUED FOR THE SOUTHERN HALF OF LAKE MICHIGAN WITH
PERHAPS GREATEST POTENTIAL FOR DENSE FOG FOR THE NEARSHORE WATERS
WHERE WATER TEMPS ARE A BIT LOWER. EXPECTING IMPROVEMENTS IN VSBYS
LATER THIS AFTERNOON AND ESPECIALLY THIS EVENING AS STRONGER LOW
LEVEL FLOW DEVELOPS IN ADVANCE OF THE APPROACHING STORM SYSTEM.
MARSILI
&&
.LOT WATCHES/WARNINGS/ADVISORIES...
IL...DENSE FOG ADVISORY UNTIL 6 PM CST THIS AFTERNOON FOR ILZ003>006-
008-010>014.
LM...STORM WARNING FROM 6 AM SUNDAY TO MIDNIGHT CST SUNDAY
NIGHT FOR LMZ777-779.
GALE WARNING FROM 4 AM SUNDAY TO MIDNIGHT CST SUNDAY NIGHT FOR
LMZ740>745.
WIND ADVISORY SUN-SUN EVENING.
IN...WIND ADVISORY SUN-SUN EVENING.
&&
WFO LOTHazardous weather outlook, Dec 22, 5:17 PM EST, 31 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 417 PM CST SAT DEC 22 2007 ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019- 232230- 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- 417 PM CST SAT DEC 22 2007 /517 PM EST SAT DEC 22 2007/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL ILLINOIS...NORTHEAST ILLINOIS AND NORTHWEST INDIANA. .DAY ONE...TONIGHT. ISOLATED THUNDERSTORMS ARE POSSIBLE TONIGHT THROUGH MIDNIGHT OVER NORTHWESTERN INDIANA AND PORTIONS OF NORTHEASTERN ILLINOIS GENERALLY EAST OF THE INTERSTATE 39 CORRIDOR. RAIN WILL CHANGE TO SNOW LATE TONIGHT. SNOW COULD BRIEFLY FALL RATHER HEAVILY AT TIMES...WITH 1 TO 2 INCHES OF ACCUMULATION POSSIBLE...MAINLY OVER NORTH CENTRAL ILLINOIS...AND AN INCH OR LESS OVER NORTHEASTERN ILLINOIS AND NORTHWESTERN INDIANA. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. A WIND ADVISORY IS IN EFFECT FOR THE OUTLOOK AREA FROM SUNDAY MORNING THROUGH EARLY MONDAY MORNING. WESTERLY WINDS WILL GUST TO AROUND 40 TO 45 MPH DURING THE DAY SUNDAY. STRONG WINDS WITH GUSTS TO 35 TO 40 MPH WILL CONTINUE INTO SUNDAY NIGHT. COLD AIR FILTERING OVER THE REGION COMBINED WITH THE STRONG WINDS WILL DRIVE WIND CHILL READING TO 5 BELOW ZERO SUNDAY NIGHT AND MONDAY. THE POTENTIAL EXISTS FOR MORE ACCUMULATING SNOWS WEDNESDAY THROUGH FRIDAY AS THE UNSETTLED WEATHER PATTERN CONTINUES. .SPOTTER INFORMATION STATEMENT... REPORTS OF SNOW ACCUMULATION WOULD BE APPRECIATED. && COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO LMZ740>745-232230- 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- 417 PM CST SAT DEC 22 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE ILLINOIS NEARSHORE WATERS OF LAKE MICHIGAN AND THE INDIANA NEARSHORE WATERS OF LAKE MICHIGAN. .DAY ONE...TONIGHT. ISOLATED THUNDERSTORMS ARE POSSIBLE THROUGH MIDNIGHT TONIGHT OVER THE SOUTHERN PORTIONS OF LAKE MICHIGAN. A GALE WARNING IS IN EFFECT FROM LATE TONIGHT THROUGH LATE SUNDAY NIGHT. WEST GALES TO 35 KNOTS ARE EXPECTED TO DEVELOP FOLLOWING THE PASSAGE OF A STRONG COLD FRONT CROSSING THE LAKE LATE TONIGHT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. WEST GALES WILL CONTINUE THROUGH SUNDAY NIGHT. WINDS AND WAVES HAZARDOUS TO SMALL CRAFT ARE POSSIBLE THROUGH THE DAY ON MONDAY. && 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- 870-872-874-876-878-232230- 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- 417 PM CST SAT DEC 22 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE OPEN WATERS OF LAKE MICHIGAN. .DAY ONE...TONIGHT. ISOLATED THUNDERSTORMS ARE POSSIBLE ACROSS SOUTHERN LAKE MICHIGAN THROUGH MIDNIGHT TONIGHT. A DEEP LOW PRESSURE SYSTEM WILL TRACK ACROSS NORTHEASTERN ILLINOIS LAKE TONIGHT TO THE UPPER PENINSULA OF MICHIGAN TOMORROW. FOLLOWING THE PASSAGE OF A STRONG COLD FRONT ASSOCIATED WITH THIS SYSTEM...WINDS WILL QUICKLY SHIFT FROM SOUTHERLY TO WESTERLY AND INCREASE TO STORM FORCE WINDS TO 50 KNOTS OVERNIGHT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. WESTERLY STORM FORCE WINDS TO 50 KNOTS WILL CONTINUE THROUGH LATE SUNDAY NIGHT. WESTERLY GALE FORCE WINDS WILL THEN CONTINUE THROUGH MONDAY AFTERNOON. && COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO KREIN
Nearby
Wind Advisories in Illinois, 2007Wind Advisories in Indiana, 2007Every wind advisory in 2007
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.