732  
FNUS54 KHUN 190816  
FWFHUN  
 
FIRE WEATHER PLANNING FORECAST FOR NORTHERN ALABAMA  
NATIONAL WEATHER SERVICE HUNTSVILLE AL  
316 AM CDT FRI APR 19 2019  
   
DISCUSSION
 
 
LIGHT RAIN WILL CONTINUE BEHIND A STORM SYSTEM MOVING THROUGH GEORGIA  
INTO THE DAYBREAK HOURS. THIS ACTIVITY IS EXPECTED TO BECOME MORE  
SCATTERED IN NATURE THROUGH THAT PERIOD.  
 
THEN AS THE SURFACE LOW ASSOCIATED WITH THIS SYSTEM MOVES NORTHWARD  
INTO THE APPALACHIANS THROUGH THE DAY, ADDITIONAL RAIN SHOWERS ARE EXPECTED  
TO DEVELOP OVER THE TENNESSEE VALLEY. VERY BREEZY AND RAW CONDITIONS  
AREA EXPECTED TODAY WITH SUSTAINED NORTHWESTERLY WINDS BETWEEN 10 AND 15  
MPH WITH GUSTS UP TO 30 MPH EXPECTED. GOOD TRANSPORT WINDS WILL BE  
ACCOMPANIED BY MIXING HEIGHTS AROUND 2000 FEET IN MOST LOCATIONS (THOUGH  
MIXING HEIGHTS WILL BE A BIT HIGHER AROUND 3000 FEET IN NORTHEASTERN  
ALABAMA). GENERALLY GOOD DISPERSION INDEX VALUES ARE EXPECTED. AN  
ADDITIONAL HALF TO ONE INCH OF RAINFALL IS POSSIBLE TODAY THROUGH  
TONIGHT.  
 
AS CLOUDS MOVE NORTHEAST OF THE AREA ON SATURDAY AND MIXING HEIGHTS  
INCREASE, DISPERSION INDEX VALUES WILL BE MUCH IMPROVED. TRANSPORT WINDS  
WILL REMAIN FAIRLY STRONG AROUND 20 MPH. A FEW LINGERING SHOWERS AND  
SOME CLOUDS COULD LINGER IN NORTHEASTERN ALABAMA, BUT MIXING HEIGHT  
SHOULD STILL BE VERY HIGH. THE AIRMASS IN PLACE ON SATURDAY WILL BE  
MUCH DRIER THOUGH, WITH MINIMUM RELATIVE HUMIDITY VALUES DROPPING TO  
BETWEEN 29 AND 35 PERCENT. THE EXCEPTION AGAIN WILL BE NORTHEASTERN  
ALABAMA, WHICH WILL BE MORE MOIST WITH RELATIVE HUMIDITY VALUES CLOSER  
TO 45 PERCENT. NORTHWEST WINDS WILL REMAIN BREEZY AND SHOULD BE 15 TO  
20 MPH WITH GUSTS TO AROUND 25 MPH.  
 
FOG POTENTIAL OVER THE NEXT FEW DAYS: SOME PATCHY FOG DUE TO LOW CLOUD  
COVER IS POSSIBLE IN HIGHER TERRAIN TODAY AND TONIGHT.  
 
POTENTIAL FOR RED FLAG CONDITIONS: NONE ARE EXPECTED AT THIS TIME.  
 
ALZ001>003-192245-  
LAUDERDALE-COLBERT-FRANKLIN AL-  
INCLUDING THE CITIES OF FLORENCE, MUSCLE SHOALS, SHEFFIELD,  
TUSCUMBIA, RUSSELLVILLE, AND RED BAY  
316 AM CDT FRI APR 19 2019  
 
TODAY TONIGHT SAT  
 
CLOUD COVER CLOUDY CLOUDY MCLEAR  
TEMP 51 42 64  
RH % 79 90 29  
20FT WND MPH (AM) NW 9 G20 NW 10 G18  
20FT WND MPH (PM) NW 10 G21 NW 9 G19 NW 10 G18  
CHANCE PRECIP (%) 70 70 0  
PRECIP TYPE SHOWERS SHOWERS NONE  
PRECIP DURATION 7 8  
PRECIP AMOUNT 0.40 0.34 0.00  
MIXING HGT (FT-AGL) 2000 6100  
TRANSPORT WND (MPH) NW 23 NW 22  
LAL 1 1 1  
STABILITY CLASS D D D  
MAX LVORI 5  
DISPERSION 43 GEN GOOD 103 VERY GOOD  
 
REMARKS...NONE.  
 

 
 
ALZ004-014-192245-  
LAWRENCE-WINSTON-  
INCLUDING THE CITIES OF MOULTON, TOWN CREEK, AND HALEYVILLE  
316 AM CDT FRI APR 19 2019  
 
TODAY TONIGHT SAT  
 
CLOUD COVER CLOUDY CLOUDY PCLDY  
TEMP 53 42 63  
RH % 79 93 29  
20FT WND MPH (AM) NW 9 G20 W 10 G19  
20FT WND MPH (PM) NW 10 G21 W 9 G20 NW 10 G19  
CHANCE PRECIP (%) 70 70 0  
PRECIP TYPE SHOWERS SHOWERS NONE  
PRECIP DURATION 7 8  
PRECIP AMOUNT 0.32 0.24 0.00  
MIXING HGT (FT-AGL) 2200 6300  
TRANSPORT WND (MPH) NW 23 NW 21  
LAL 1 1 1  
STABILITY CLASS D D D  
MAX LVORI 5  
DISPERSION 41 GEN GOOD 117 VERY GOOD  
 
REMARKS...NONE.  
 

 
 
ALZ005>007-016-192245-  
LIMESTONE-MADISON-MORGAN-CULLMAN-  
INCLUDING THE CITIES OF ATHENS, HUNTSVILLE, DECATUR, AND CULLMAN  
316 AM CDT FRI APR 19 2019  
 
TODAY TONIGHT SAT  
 
CLOUD COVER CLOUDY CLOUDY MCLDY  
TEMP 56 40 63  
RH % 79 95 34  
20FT WND MPH (AM) NW 8 G19 W 10 G19  
20FT WND MPH (PM) NW 10 G22 W 10 G23 NW 9 G19  
CHANCE PRECIP (%) 70 70 0  
PRECIP TYPE SHOWERS SHOWERS NONE  
PRECIP DURATION 7 8  
PRECIP AMOUNT 0.33 0.29 0.00  
MIXING HGT (FT-AGL) 2400 6500  
TRANSPORT WND (MPH) NW 23 W 21  
LAL 1 1 1  
STABILITY CLASS D D D  
MAX LVORI 5  
DISPERSION 50 GEN GOOD 116 VERY GOOD  
 
REMARKS...NONE.  
 

 
 
ALZ008>010-192245-  
MARSHALL-JACKSON-DEKALB-  
INCLUDING THE CITIES OF ALBERTVILLE, BOAZ, GUNTERSVILLE, ARAB,  
SCOTTSBORO, FORT PAYNE, AND RAINSVILLE  
316 AM CDT FRI APR 19 2019  
 
TODAY TONIGHT SAT  
 
CLOUD COVER CLOUDY CLOUDY MCLDY  
TEMP 60 38 58  
RH % 78 100 45  
20FT WND MPH (AM) W 8 G20 W 9 G17  
20FT WND MPH (PM) W 9 G19 W 9 G20 W 8 G17  
CHANCE PRECIP (%) 70 70 30  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
PRECIP DURATION 5 8 1  
PRECIP AMOUNT 0.24 0.23 0.03  
MIXING HGT (FT-AGL) 3000 6500  
TRANSPORT WND (MPH) W 25 W 20  
LAL 1 1 1  
STABILITY CLASS D D D  
MAX LVORI 6  
DISPERSION 50 GEN GOOD 87 GOOD  
 
REMARKS...NONE.  
 

 
 
   
FORECAST FOR DAYS 3 THROUGH 7
 
 
   
SATURDAY NIGHT
 
MOSTLY CLEAR. LOWS IN THE LOWER 40S. MAXIMUM RH  
82 PERCENT. WEST WINDS AROUND 5 MPH.    
SUNDAY
 
SUNNY. HIGHS IN THE MID 70S. MINIMUM RH 38 PERCENT.  
SOUTHWEST WINDS AROUND 5 MPH.    
SUNDAY NIGHT
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. MAXIMUM RH  
87 PERCENT. SOUTH WINDS AROUND 5 MPH.    
MONDAY
 
SUNNY. HIGHS IN THE UPPER 70S. MINIMUM RH 43 PERCENT.  
SOUTH WINDS AROUND 5 MPH.    
MONDAY NIGHT
 
MOSTLY CLEAR. LOWS IN THE MID 50S. MAXIMUM RH  
88 PERCENT. SOUTH WINDS AROUND 5 MPH.    
TUESDAY
 
SUNNY. HIGHS IN THE UPPER 70S. MINIMUM RH 43 PERCENT.  
SOUTH WINDS AROUND 5 MPH.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE UPPER 50S. MAXIMUM RH  
86 PERCENT. LIGHT WINDS.    
WEDNESDAY
 
PARTLY SUNNY WITH CHANCE OF RAIN SHOWERS AND SLIGHT  
CHANCE OF THUNDERSTORMS. CHANCE OF PRECIPITATION 40 PERCENT.  
HIGHS IN THE UPPER 70S. MINIMUM RH 48 PERCENT. SOUTH WINDS AROUND  
5 MPH.    
WEDNESDAY NIGHT
 
MOSTLY CLOUDY WITH CHANCE OF RAIN SHOWERS AND  
SLIGHT CHANCE OF THUNDERSTORMS. CHANCE OF PRECIPITATION  
40 PERCENT. LOWS IN THE UPPER 50S. MAXIMUM RH 91 PERCENT. SOUTH  
WINDS AROUND 5 MPH.    
THURSDAY
 
MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF SHOWERS AND  
THUNDERSTORMS. HIGHS IN THE MID 70S. MINIMUM RH 53 PERCENT.  
SOUTHEAST WINDS AROUND 5 MPH.  
 

 
20  
 
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