290 
FNUS75 KTWC 161036
FWSTWC

Spot Forecast for Harrington...AZ-SCA
National Weather Service Tucson AZ
336 AM MST Tue Sep 16 2025

Forecast is based on forecast start time of 0600 MST on September 16.
 
.DISCUSSION...Expect scattered showers and thunderstorms beginning late
this morning and continuing into the evening. Thunderstorm chances 
continue Wednesday as well as the rest of the work week. Storms will
be capable of heavy rainfall and wind gusts to 45 mph. Outside of storms
expect wind speeds 5-10 mph. Min RH will be around 40 percent with
very good overnight recoveries. 

.TODAY...

Sky/weather.........Partly cloudy then becoming mostly cloudy. Chance
                    of showers and thunderstorms late morning into the 
                    afternoon. 
Chance of pcpn......15 percent early in the morning, then increasing 
                    to 60 percent late in the morning into the afternoon. 
Max temperature.....74-77 degrees. 
Min humidity........38-41 percent. 
20-foot winds.......South southeast 5 to 8 mph in the morning, then 
                    shifting to the southwest in the afternoon. 
                    Gusty and erratic winds expected near 
                    thunderstorms. 
Mixing height.......7500 ft AGL. 
Transport winds.....East 5 to 6 knots shifting to the southwest 6 
                    to 8 knots in the late morning and afternoon. 

TIME (MST)      6 AM      9 AM      NOON      3 PM      
Sky (%).........15        10        71        77        
Weather cov.....          S CHC     CHANCE    CHANCE    
Weather type....NONE      RNSHWR    RNSHWR    RNSHWR    
Tstm cov........          S CHC     CHANCE    CHANCE    
CWR.............0         15        60        60        
Temp............51        68        73        71        
RH..............79        49        40        42        
20 FT wind......E 2G7     SE 4G8    S 6G11    SW 7G11    
Mix hgt (ft)....500       3800      7500      4200      
Transport wind..E 6       S 6       S 7       SW 8      

.TONIGHT...

Sky/weather.........Mostly cloudy. Chance of showers and 
                    thunderstorms in the evening. 
Chance of pcpn......30 percent decreasing to 10 percent overnight. 
Min temperature.....49-52 degrees. 
Max humidity........89-92 percent. 
20-foot winds.......Southwest winds up 4 to 8 mph shifting to the 
                    east early in the evening and overnight. Gusty
                    and erratic winds expected near thunderstorms 
                    in the evening. 
Mixing height.......400 ft AGL. 
Transport winds.....East 5 to 7 knots. 

TIME (MST)      6 PM      9 PM      MIDNGT    3 AM      
Sky (%).........53        63        59        58        
Weather cov.....CHANCE    S CHC     S CHC               
Weather type....RNSHWR    RNSHWR    RNSHWR    NONE      
Tstm cov........CHANCE    S CHC     S CHC               
CWR.............30        20        15        10        
Temp............65        58        55        53        
RH..............55        70        79        83        
20 FT wind......SW 6G9    E 4G8     NE 4G6    NE 4G7    
Mix hgt (ft)....1500      400       500       500       
Transport wind..E 6       E 6       E 7       E 5       

.WEDNESDAY...

Sky/weather.........Mostly cloudy. Chance of showers and 
                    thunderstorms late in the afternoon. 
Chance of pcpn......50 percent. 
Max temperature.....72-75 degrees. 
Min humidity........37-40 percent. 
20-foot winds.......East winds 5 to 7 mph shifting to the 
                    south southwest in the afternoon. Gusty and erratic 
                    winds expected near thunderstorms. 
Mixing height.......6200 ft AGL. 
Transport winds.....East 4 to 5 knots shifting to the south late in 
                    the morning, then shifting to the northeast 6 
                    to 7 knots late in the afternoon. 

TIME (MST)      6 AM      9 AM      NOON      3 PM      
Sky (%).........79        67        63        78        
Weather cov.....                    CHANCE    CHANCE    
Weather type....NONE      NONE      RNSHWR    RNSHWR    
Tstm cov........                    CHANCE    CHANCE    
CWR.............0         10        50        50        
Temp............50        65        72        71        
RH..............90        56        39        40        
20 FT wind......NE 2G6    E 2G6     SW 5G8    W 7G10     
Mix hgt (ft)....400       2200      5700      4000      
Transport wind..NE 5      SE 5      S 5       NE 6      

$$
Forecaster...HARDIN
Requested by...Scott Pina
Type of request...WILDFIRE
.TAG 2521926.2/TWC
.DELDT 09/16/25
.FormatterVersion 2.0.0
.EMAIL azphc@firenet.gov,guy.acuna@firenet.gov

Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson