599 FNUS54 KHUN 211015 FWFHUN FIRE WEATHER PLANNING FORECAST FOR NORTHERN ALABAMA NATIONAL WEATHER SERVICE HUNTSVILLE AL 515 AM CDT TUE MAY 21 2013 .DISCUSSION... AN APPROACHING LINE OF SHOWERS AND THUNDERSTORMS MAY BRING A BRIEF PERIOD OF WETTING RAIN ACROSS NORTHWEST ALABAMA THIS MORNING. ANOTHER SLIGHT CHANCE FOR SHOWER ACTIVITY IS EXPECTED IN THE AFTERNOON...AS ADDITIONAL SHOWER ACTIVITY APPROACHES NORTHWEST ALABAMA. DAYTIME HEATING AND INSTABILITY MAY ALSO BRING ISOLATED SHOWERS AND THUNDERSTORMS ACROSS FAR NORTHEAST ALABAMA. BETTER CHANCES FOR SHOWER ACTIVITY IS FORECAST LATE TONIGHT AND DURING WEDNESDAY...AS A SYSTEM MOVES ACROSS FROM THE WEST. A PASSING UPPER DISTURBANCE AND COLD FRONT WILL BRING ANOTHER CHANCE OF SHOWERS AND THUNDERSTORMS ON THURSDAY. RELATIVELY HIGH MIXING HEIGHTS AND TRANSPORT WINDS WILL BRING GOOD TO VERY GOOD DISPERSION RATES TODAY. GENERALLY GOOD TO GOOD DISPERSION IS FORECAST ON WEDNESDAY. ALZ001>005-007-016-212300- LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MORGAN-CULLMAN- INCLUDING THE CITIES OF...FLORENCE...MUSCLE SHOALS... RUSSELLVILLE...MOULTON...ATHENS...DECATUR...CULLMAN 515 AM CDT TUE MAY 21 2013 TODAY TONIGHT WED CLOUD COVER PCLDY PCLDY MCLDY TEMP 87 65 81 RH % 46 97 54 20FT WND MPH (AM) S 7 SW 7 20FT WND MPH (PM) S 6 S 5 SW 8 CHANCE PRECIP (%) 10 20 50 PRECIP TYPE TSTMS TSTMS TSTMS PRECIP DURATION 0-1 0-2 1-3 PRECIP AMOUNT 0.00 0.01 0.43 MIXING HGT (FT-AGL) 8400 5600 TRANSPORT WND (MPH) W 15 SW 14 DISPERSION 66 GOOD 48 GEN GOOD REMARKS...NONE. $$ ALZ006-008>010-212300- MADISON-MARSHALL-JACKSON-DEKALB- INCLUDING THE CITIES OF...HUNTSVILLE...GUNTERSVILLE... SCOTTSBORO...FORT PAYNE 515 AM CDT TUE MAY 21 2013 TODAY TONIGHT WED CLOUD COVER PCLDY PCLDY MCLDY TEMP 86 65 79 RH % 46 93 55 20FT WND MPH (AM) S 6 S 5 20FT WND MPH (PM) S 5 LGT/VAR SW 6 CHANCE PRECIP (%) 0 10 40 PRECIP TYPE NONE TSTMS TSTMS PRECIP DURATION 0 0-1 1-3 PRECIP AMOUNT 0.00 0.00 0.18 MIXING HGT (FT-AGL) 8900 8100 TRANSPORT WND (MPH) SW 18 SW 18 DISPERSION 147 VERY GOOD 67 GOOD REMARKS...NONE. $$ .FORECAST FOR DAYS 3 THROUGH 7... .THURSDAY...PARTLY CLOUDY. A 50 PERCENT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE LOWER 60S. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS AROUND 5 MPH. .FRIDAY...MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE UPPER 70S. WEST WINDS AROUND 10 MPH. .SATURDAY...MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE UPPER 70S. NORTH WINDS AROUND 5 MPH. .SUNDAY...PARTLY CLOUDY. LOWS IN THE UPPER 50S. HIGHS IN THE LOWER 80S. LIGHT WINDS. .MONDAY...MOSTLY CLOUDY. LOWS IN THE LOWER 60S. HIGHS IN THE LOWER 80S. LIGHT WINDS. $$