000 
FNUS73 KFSD 240341
FWSFSD

SPOT FORECAST FOR CHRISTIANIA 31A
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1041 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)

FORECASTER...TEMEYER

$$

REQUESTED BY...ALAN BECK
REASON FOR REQUEST...UNDER THE INTERAGENCY AGREEMENT FOR METEOROLOGICAL SERVICES (USFS, BLM, NPS, USFWS, BIA).