474  
FNUS74 KHUN 301539  
FWSHUN  
 
SPOT FORECAST FOR HAZMAT EXERCISE...WFO HUNTSVILLE  
NATIONAL WEATHER SERVICE HUNTSVILLE AL  
1039 AM CDT TUE MAY 30 2023  
 
FORECAST IS BASED ON FORECAST START TIME OF 1100 CDT ON MAY 30.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION  
 
MOSTLY SUNNY TO PARTLY CLOUDY CONDITIONS ARE EXPECTED TODAY, WITH  
A SLIGHT CHANCE FOR A SHOWER OR THUNDERSTORM THIS AFTERNOON.  
SURFACE WINDS WILL GENERALLY BE OUT OF THE EAST NEAR 5 TO 10 MPH.  
TRANSPORT WINDS WILL ALSO BE OUT OF THE EAST AROUND 5 MPH, WITH  
AFTERNOON RELATIVE HUMIDITY VALUES NEAR 50 PERCENT.  
 
   
REST OF TODAY  
 
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS LATE IN THE  
AFTERNOON.  
MAX TEMPERATURE.....AROUND 79.  
MIN HUMIDITY........54 PERCENT.  
CWR.................10 PERCENT INCREASING TO 20 PERCENT LATE IN THE  
AFTERNOON.  
CHANCE OF PCPN......20 PERCENT.  
LAL.................1 UNTIL 1500, THEN 2.  
MIXING HEIGHT.......6200 FT AGL.  
TRANSPORT WINDS.....EAST 3 TO 6 MPH.  
LVORI...............3.  
 
TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........23 24 24 28 32 36 35  
WEATHER COV..... SCH SCH SCH  
WEATHER TYPE.... RW RW RW  
TEMP............72 75 77 78 78 79 78  
RH..............68 62 58 58 58 54 58  
MIX HGT (KFT)...4.0 4.9 5.7 5.9 6.0 6.2 4.4  
TRANSP WIND DIR.090 090 090 090 080 080 090  
TRANSP WIND SPD.6 5 3 3 3 3 3  
DISPERSION IDX..29 28 24 25 25 26 19  
LVORI...........3 3 2 2 2 2 2  
CWR.............0 10 10 10 20 20 20  
CHC OF PCPN (%).0 10 10 10 20 20 20  
LAL.............1 1 1 1 2 2 2  
 
 
FORECASTER...GRIFFIN  
REQUESTED BY...WFO HUN  
TYPE OF REQUEST...HAZMAT  
.TAG 2314191.0/HUN  
.DELDT 05/30/23  
.FORMATTERVERSION 2.0.0  
.EMAIL DANA.GRIFFIN@NOAA.GOV  
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