000 
FNUS73 KFSD 240339
FWSFSD

SPOT FORECAST FOR CHRISTIANIA 31A BURN...USFWS CONTRACTOR
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1027 PM CDT SAT APR 23 2005

IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER 
SERVICE

DISCUSSION...HIGH PRESSURE AT THE SURFACE WILL REMAIN LOCKED IN JUST 
WEST OF THE AREA.   THIS WILL MEAN A CONTINUATION OF DRY 
CONDITIONS...AND A PERSISTENT NORTHWEST WIND WHICH WILL REACH A PEAK 
BY EARLY AFTERNOON WITH SURFACE HEATING.  A SHALLOW EARLY MORNING 
INVERSION SHOULD MIX OUT RIGHT AROUND 10 AM...WHEN THE DISPERSION 
INDEX WILL CROSS FROM POOR TO GOOD. WITH TEMPERATURES CLIMBING TO 
NEAR 60 DEGREES AND DEW POINTS IN THE 20S... RELATIVE HUMIDITY 
VALUES WILL FALL TO NEAR 25 PERCENT IN THE AFTERNOON HOURS. 


FOR PLANNED IGNITION TIME OF 1000 AM CDT 04/24/05



OUTLOOK FOR SUNDAY AFTERNOON 
TIME(CDT)             9AM         NOON         3PM          6PM 


SKY/WX............... CLR         PTCLDY       PTCLDY       PTCLDY
TEMP (F)............. 41          51           59           60
DEW PT (F)........... 21          23           25           26
RH (%)............... 44          34           27           27
20 FT WIND (MPH)..... NW-10       NW-12        NW-13        N-13
MIXING HGT (FT, AGL). 2670        3573         4616         4871
TRANSPORT WIND (MPH). NW-17       N-19         N-20         N-21
DISPERSION INDEX..... GOOD        EXCELLENT    EXCELLENT    EXCELLENT
HAINES INDEX......... 5 (MOD)     5 (MOD)      6 (HIGH)     6 (HIGH)


$$