National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

South Dakota Fire Weather Zone 256

.DISCUSSION...
SCATTERED TO OCCASIONAL SHOWERS WILL PERSIST THROUGH TONIGHT BEFORE
FINALLY TAPERING OFF FROM WEST TO EAST ON WEDNESDAY. TEMPERATURES
WILL REMAIN BELOW NORMAL INTO MID WEEK WITH HIGHS IN THE UPPER 50S
AND 60S. DRY WEATHER IS EXPECTED ON THURSDAY WITH WARMER
TEMPERATURES...HOWEVER SHOWERS AND THUNDERSTORM CHANCES RETURN FRIDAY
INTO THE WEEKEND.

MIDDLE JAMES RIVER VALLEY-
456 AM CDT TUE MAY 21 2013

.TODAY...
SKY/WEATHER.........CLOUDY. RAIN SHOWERS UNTIL 1300...THEN RAIN
                    SHOWERS LIKELY. CHANCE OF SHOWERS 90 PERCENT.
MAX TEMPERATURE.....52-57.
MIN HUMIDITY........83-88 PERCENT.
20-FOOT WINDS.......NORTHWEST WINDS 10 TO 15 MPH.
HAINES INDEX........3 OR VERY LOW.
HOURS OF SUN........0 HOURS.
PRECIPITATION.......WIDESPREAD 0.10 TO 0.20 INCH AMOUNTS.
MIXING HEIGHT.......AROUND 2000 FT AGL (AVE 12-6 PM).
TRANSPORT WINDS.....NORTHWEST AROUND 16 MPH (AVE 12-6 PM).
SMOKE DISPERSAL.....AROUND 29000 OR FAIR (AVE 12-6 PM).
MAX GFDI INDEX......LOW.
REF EVAPO TRANSP....0.08 TO 0.11 INCHES (20 INCH PLANT CANOPY).

.TONIGHT...
SKY/WEATHER.........CLOUDY. CHANCE OF RAIN SHOWERS. CHANCE OF
                    SHOWERS 50 PERCENT.
MIN TEMPERATURE.....44-49.
MAX HUMIDITY........90-95 PERCENT.
20-FOOT WINDS.......NORTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO
                    AROUND 23 MPH.
PRECIPITATION.......SCATTERED 0.10 TO 0.20 INCH AMOUNTS.

.WEDNESDAY...
SKY/WEATHER.........CLOUDY. CHANCE OF RAIN SHOWERS. CHANCE OF
                    SHOWERS 50 PERCENT.
MAX TEMPERATURE.....57-62.
MIN HUMIDITY........60-65 PERCENT.
20-FOOT WINDS.......NORTH WINDS 8 TO 13 MPH WITH GUSTS TO AROUND 21
                    MPH.
HAINES INDEX........3 OR VERY LOW.
HOURS OF SUN........1 HOURS.
PRECIPITATION.......SCATTERED TRACE TO 0.05 INCH AMOUNTS.
MIXING HEIGHT.......AROUND 2900 FT AGL (AVE 12-6 PM).
TRANSPORT WINDS.....NORTH AROUND 17 MPH (AVE 12-6 PM).
SMOKE DISPERSAL.....AROUND 43000 OR GOOD (AVE 12-6 PM).
MAX GFDI INDEX......LOW.
REF EVAPO TRANSP....0.08 TO 0.12 INCHES (20 INCH PLANT CANOPY).



.FORECAST DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...PARTLY CLOUDY. LOWS 40 TO 45. NORTHWEST WINDS
7 TO 12 MPH.
.THURSDAY...WARMER. MOSTLY SUNNY. HIGHS 70 TO 75. EAST WINDS 7 TO
12 MPH.
.THURSDAY NIGHT...PARTLY CLOUDY. LOWS 45 TO 50. SOUTHEAST WINDS
7 TO 12 MPH.
.FRIDAY...PARTLY SUNNY. CHANCE OF SHOWERS AND THUNDERSTORMS.
HIGHS 65 TO 70. SOUTHEAST WINDS 12 TO 17 MPH WITH GUSTS TO AROUND
27 MPH. CHANCE OF PRECIPITATION 30 PERCENT.
.FRIDAY NIGHT...MOSTLY CLOUDY. CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 55 TO 60. SOUTHEAST WINDS 10 TO 15 MPH.
CHANCE OF PRECIPITATION 50 PERCENT.
.SATURDAY...MOSTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.
HIGHS 70 TO 75. SOUTHEAST WINDS 6 TO 11 MPH. CHANCE OF
PRECIPITATION 40 PERCENT.
.SATURDAY NIGHT...MOSTLY CLOUDY. CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 55 TO 60. SOUTHEAST WINDS 6 TO 11 MPH. CHANCE
OF PRECIPITATION 30 PERCENT.
.SUNDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. HIGHS 75 TO 80. SOUTHEAST WINDS 7 TO 12 MPH.
CHANCE OF PRECIPITATION 20 PERCENT.
.SUNDAY NIGHT...MOSTLY CLOUDY. CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS 55 TO 60. SOUTHEAST WINDS 7 TO 12 MPH. CHANCE
OF PRECIPITATION 50 PERCENT.
.MONDAY...PARTLY SUNNY. CHANCE OF SHOWERS AND THUNDERSTORMS.
HIGHS 75 TO 80. SOUTHEAST WINDS 10 TO 15 MPH. CHANCE OF
PRECIPITATION 30 PERCENT.