RSS FeedsIssued by NWS Milwaukee/Sullivan, WI
000 FXUS63 KMKX 220940 AFDMKX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 340 AM CST SUN NOV 22 2009 FORECAST FOCUS ON DENSE FOG OVER SHEBOYGAN COUNTY THIS MORNING...CLOUDS AND TEMPERATURES THROUGH MONDAY NIGHT...PRECIPITATION CHANCES TUESDAY THROUGH THANKSGIVING DAY. LATEST WATER VAPOR IMAGERY INDICATED AN UPPER LEVEL RIDGE OVER THE CENTRAL GREAT LAKES REGION...WITH AN UPSTREAM UPPER TROUGH OVER THE EASTERN ROCKIES. AT THE SURFACE...HIGH PRESSURE WAS LOCATED OVER SOUTHEAST ONTARIO CANADA...WITH LIGHT SOUTHEAST WINDS ON THE BACKSIDE OF THE HIGH OVER SOUTHERN WISCONSIN. .TODAY...LIGHT WINDS AND MOSTLY CLEAR SKIES OVER THE FAR EASTERN COUNTIES HELPING AREAS OF FOG MAINTAIN THEMSELVES. KSBM HAS BEEN AROUND 1/4SM VISIBILITY FOR A FEW HOURS NOW...THOUGH MOST OF THE DENSE FOG SEEMS TO BE IN LOW LYING AREAS. WILL KEEP DENSE FOG ADVISORY GOING FOR SHEBOYGAN COUNTY UNTIL 9 AM CST. KETB ALSO SHOWING SOME DENSE FOG AT TIMES...SO WILL ADD THEM TO THE DENSE FOG ADVISORY. SOME LIGHT FOG SEEN ACROSS THE REST OF THE FORECAST AREA...UNDER MID LEVEL CLOUDS. THE FOG SHOULD MIX OUT BY MID MORNING ACROSS THE AREA. THE MID LEVEL CLOUDS EXTEND TO EASTERN IOWA AND SOUTH...THOUGH THERE ARE SOME BREAKS IN THE CLOUDS. WILL TREND MOSTLY CLOUDY TO PARTLY SUNNY IN THE WESTERN COUNTIES TODAY...WITH PARTLY SUNNY IN THE EAST. ANOTHER MILD DAY IN STORE...WITH HIGHS IN THE MID 50S ACROSS THE AREA. THE CLOUDS MAY KEEP TEMPERATURES DOWN SOME IN THE WESTERN COUNTIES. .TONIGHT THROUGH MONDAY NIGHT...THE DRY LOW LEVELS EXPECTED OVER THE AREA DURING THIS PERIOD SHOULD KEEP THE AREA PRECIPITATION FREE. THE CLOUDS SHOULD GRADUALLY MIX OUT TONIGHT...THEN SLOWLY RETURN MONDAY AND MONDAY NIGHT AHEAD OF THE DEVELOPING LOW IN THE CENTRAL PLAINS. MILD TEMPERATURES ARE EXPECTED TO CONTINUE DURING THIS TIME. EXPECT PATCHY FOG LATER TONIGHT INTO MONDAY MORNING...AND AGAIN LATER MONDAY NIGHT...WITH A STRONG LOW LEVEL TEMPERATURE INVERSION AND FAIRLY LIGHT WINDS. .TUESDAY THROUGH SATURDAY...CONTINUED TO FOLLOW THE CONSISTENT ECMWF MODEL WITH THE SYSTEM MOVING THROUGH THE REGION DURING THIS TIME. AFTER CYCLOGENESIS IN THE CENTRAL PLAINS MONDAY NIGHT...THE LOW MOVES TO FAR NORTHERN MISSOURI BY 00Z WEDNESDAY...THEN INTO SOUTHERN WISCONSIN BY 12Z WEDNESDAY. GOOD LOW TO MID LEVEL FRONTOGENESIS CROSSES THE AREA TUESDAY AND TUESDAY NIGHT...WITH A STRONG UPPER LOW PASSING JUST SOUTH OF THE AREA. WENT WITH LIKELY POPS FOR RAIN ACROSS THE AREA FROM WEST TO EAST TUESDAY AND TUESDAY NIGHT. ANOTHER STRONG UPPER LOW SWINGS FROM THE NORTHERN PLAINS SOUTHEAST TO IOWA BY 00Z THURSDAY...THEN EAST TO NORTHERN ILLINOIS BY 12Z THURSDAY...BEFORE SLOWLY MOVING EAST INTO OHIO BY 12Z FRIDAY. A WEAK SURFACE LOW MOVES EAST ACROSS THE AREA DURING THANKSGIVING DAY. QPF SEEMS HIGH GIVEN THE LACK OF FRONTOGENESIS ACROSS THE AREA. STILL...925MB TEMPERATURES DROP TO AROUND ZERO BY 12Z THURSDAY...LASTING THROUGH 00Z FRIDAY. THIS WILL BRING A GRADUAL MIX OF LIGHT RAIN AND LIGHT SNOW...THEN TO ALL LIGHT SNOW BY THANKSGIVING DAY. KEPT THE CHANCE POPS FOR WEDNESDAY THROUGH THURSDAY NIGHT ACROSS THE AREA. LIGHT SNOW ACCUMULATIONS OF AN INCH OR SO MAY BE POSSIBLE WEDNESDAY NIGHT INTO THANKSGIVING DAY...SO KEEP UP WITH THE FORECAST. && .AVIATION...RADIATIONAL FOG ONCE AGAIN THIS AM BUT ONLY MVFR VSBYS OVER SOUTH CENTRAL WI DUE TO BKN CLOUD COVER AT 6-7 KFT. FEW-SCT CLOUD COVER OVER FAR ERN WI SO VSBYS LESSER AND VARYING GREATLY FROM MVFR VSBYS TO ISOLD VLIFR VSBYS AND VLIFR CIGS. MOST OF THE FOG WILL LIFT BY 15Z TO 16Z BUT LOCAL MVFR VSBYS MAY REMAIN DUE TO AIR POLLUTION IN POORLY MIXED ATMOSPHERE. LGT SELY WINDS WILL PREVAIL TNT WITH MID LEVEL CLOUDS DECREASING. RADIATIONAL FOG AND SCT STRATUS WILL DEVELOP ONCE AGAIN DURING THE LATE EVENING AND OVERNIGHT. THERE WILL BE ENOUGH WIND TO PREVENT WIDESPREAD DENSE FOG. WIDESPREAD VSBYS OF MVFR ARE EXPECTED WITH AREAS OF IFR...AND ISOLD LIFR TO VLIFR ONCE AGAIN. LOCAL CIGS FROM MVFR TO LIFR WILL DEVELOP WITH THE FOG. && .MKX WATCHES/WARNINGS/ADVISORIES... WI...DENSE FOG ADVISORY UNTIL 9 AM CST THIS MORNING FOR WIZ052-059. LM...NONE. && $$ SHORT/LONG TERM...08/WOOD AVIATION/MARINE...20/GEHRING
