384 
FNUS73 KDMX 020045
FWSDMX

SPOT FORECAST FOR SAC CITY WETLAND COMPLEX...IA DNR
NATIONAL WEATHER SERVICE DES MOINES IA
745 PM CDT SUN MAY 1 2011

FORECAST IS BASED ON IGNITION TIME OF 1030 CDT ON MAY 02. 
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

PLEASE REMEMBER TO SUBMIT A MID BURN OBSERVATION TO THE NATIONAL WEATHER
SERVICE FOR EACH PRESCRIBED BURN.

.DISCUSSION...
HIGH PRESSURE ACROSS THE AREA WILL PROVIDE THE REGION WITH GENERALLY LESS WIND
BY MONDAY. HOWEVER...RELATIVE HUMIDITY WILL REMAIN RATHER LOW IN THE MID 20S.
WINDS MIXING TO 17 TO 23 MPH DURING THE LATE MORNING HOURS CAN BE EXPECTED. THE
DRY WEATHER WITH NO WETTING RAINFALL WILL PERSIST THROUGH MIDWEEK THOUGH 
STRONGER SOUTH WINDS ARE ANTICIPATED BY WEDNESDAY. 

.TODAY...

SKY/WEATHER.........SUNNY (10-20 PERCENT). 
MAX TEMPERATURE.....AROUND 54. 
MIN HUMIDITY........20 PERCENT. 
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME 
                    DOMINATED FIRE GROWTH. 
MIXING HEIGHT.......5900 FT AGL INCREASING TO 6800 FT AGL IN THE 
                    AFTERNOON. 
MIXING WINDS........WEST 26 TO 33 MPH. 
SMOKE DISPERSAL.....EXCELLENT (157100 KNOT-FT). 
WIND (20 FT)........WINDY. WEST WINDS 20 TO 29 MPH SHIFTING TO THE 
                    NORTHWEST 22 TO 31 MPH IN THE LATE MORNING AND 
                    EARLY AFTERNOON...THEN SHIFTING TO THE WEST 20 
                    TO 21 MPH LATE IN THE AFTERNOON. 

TIME (CDT)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 
SKY (%).........3   1   1   0   1   3   3   12  14  18  21  25  
WEATHER COV.....                                                
WEATHER TYPE....                                                
TEMP............39  41  43  46  48  49  51  52  53  53  53  52  
RH..............57  52  47  40  34  31  29  27  26  26  25  26  
20 FT WIND DIR..W   W   W   W   W   NW  NW  NW  NW  W   W   W   
20 FT WIND SPD..20  21  23  29  31  30  26  25  23  22  21  20  
20 FT WIND GUST.35  35  35  40  40  40  35  35  30  30  30  30  
MIX HGT (KFT)...4.1 4.1 4.2 4.2 4.8 5.4 5.9 6.2 6.5 6.8 6.3 5.7 
MIXNG WIND DIR..W   W   W   W   W   W   W   W   W   W   W   W   
MIXNG WIND SPD..33  31  29  28  26  26  26  26  26  26  28  29  
HAINES INDEX....4   4   4   4   4   5   5   5   5   5   5   5   

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT). AREAS OF FROST 
                    EARLY IN THE MORNING. 
MIN TEMPERATURE.....AROUND 32. 
MAX HUMIDITY........64 PERCENT. 
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME 
                    DOMINATED FIRE GROWTH. 
MIXING HEIGHT.......5200 FT AGL DECREASING TO 1900 FT AGL EARLY IN 
                    THE EVENING. 
MIXING WINDS........WEST 22 TO 28 MPH BECOMING NORTHWEST 7 TO 15 
                    MPH EARLY IN THE EVENING. 
SMOKE DISPERSAL.....EXCELLENT (124300 KNOT-FT) DECREASING TO POOR 
                    (5900 KNOT-FT) IN THE LATE EVENING AND 
                    OVERNIGHT. 
WIND (20 FT)........NORTHWEST WINDS 8 TO 17 MPH. 

TIME (CDT)      7 PM   9 PM   11 PM  1 AM   3 AM   5 AM   
SKY (%).........27     24     20     17     18     19     
WEATHER COV.....                                   AREAS  
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   FROST  
TEMP............50     45     41     39     36     35     
RH..............28     38     48     52     56     61     
20 FT WIND......W 17   W 13   NW 9   NW 9   NW 8   NW 8   
20 FT WIND GUST.25     15     10     10     10     10     
MIX HGT (FT)....5200   1900   300    300    600    800    
MIXNG WIND......W 28   NW 15  NW 8   NW 10  NW 9   NW 8   
HAINES INDEX....5      5      5      5      5      5      

.MONDAY...

SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT). 
MAX TEMPERATURE.....AROUND 56. 
MIN HUMIDITY........32 PERCENT. 
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED 
                    FIRE GROWTH. 
MIXING HEIGHT.......2000 FT AGL INCREASING TO 7800 FT AGL. 
MIXING WINDS........NORTHWEST 8 TO 17 MPH INCREASING TO 17 TO 23 
                    MPH IN THE LATE MORNING AND AFTERNOON. 
SMOKE DISPERSAL.....FAIR (49600 KNOT-FT) INCREASING TO EXCELLENT 
                    (125500 KNOT-FT) IN THE LATE MORNING AND 
                    AFTERNOON. 
WIND (20 FT)........NORTHWEST WINDS 8 TO 16 MPH. 

TIME (CDT)      7 AM      10 AM     1 PM      4 PM      
SKY (%).........20        23        34        36        
WEATHER COV.....                                        
WEATHER TYPE....NONE      NONE      NONE      NONE      
TEMP............35        44        51        55        
RH..............66        47        34        31        
20 FT WIND......NW 8G10   NW 13G15  NW 16G20  NW 15G20  
MIX HGT (FT)....800       4500      6700      7800      
MIXNG WIND......NW 8      NW 22     NW 21     NW 18     
HAINES INDEX....4         4         4         4         

$$
FORECASTER...VACHALEK
REQUESTED BY...PETE HILDRETH
TYPE OF REQUEST...PRESCRIBED
.TAG 20110502.SACCI.01/DMX