Forecast and Conditions for Yankton, South Dakota

Updated: 5:35 PM CDT on July 09, 2009
Observed at Yankton, South Dakota
Temperature 75 °F
Humidity 78%
Dew Point 68 °F
Wind South at 8 mph
Pressure 29.91 in (Falling)
Conditions Overcast
Visibility 7.0 miles
Clouds Overcast (OVC) : 3200 ft
Yesterday's Maximum 81 °F
Yesterday's Minimum 63 °F
Normal high 87 °F
Normal low 63 °F
Record high 105 °F (1989)
Record low 50 °F (1996)
Sunrise05:59 AM (CDT)
Sunset09:09 PM (CDT)
Moon Rise10:29 PM (CDT)
Moon Set08:06 AM (CDT)
Moon Phase
Flood Warning
Statement as of 9:55 am CDT on July 06, 2009


The Flood Warning continues for
the James River near Scotland.
* From this afternoon to Sunday morning.
* At 09am Monday the stage was 12.9 feet.
* Flood stage is 13.0 feet.
* Forecast... rise above flood stage by 1 PM Monday and crest near
13.4 feet by Wednesday July 08. The river will fall below flood
stage by Saturday July 11.
* At stages near 13.0 feet... significant agricultural flooding
begins.


Location flood latest observed maximum forecast recent observed
         stage stage time stage time crest time

James River
hurs2 11.0 11.41 Mon 10 am 11.5 Sat Jul 04
fors2 12.0 12.90 Mon 9 am 13.0 Sat Jul 04
jrms2 17.0 18.81 Mon 9 am 18.8 Mon Jul 06



Flash Flood Watch
Statement as of 12:07 PM CDT on July 9, 2009


... Flash Flood Watch in effect from 7 PM CDT this evening through
Friday morning...

The National Weather Service in Sioux Falls has issued a

* Flash Flood Watch for portions of northwest Iowa... northeast
Nebraska and southeast South Dakota... including the following
areas... in northwest Iowa... Buena Vista... Cherokee... Clay...
Dickinson... Ida... Lyon... Obrien... Osceola... Plymouth... Sioux
and Woodbury. In northeast Nebraska... Dakota and Dixon. In
southeast South Dakota... Clay... Lincoln... Union and Yankton.

* From 7 PM CDT this evening through Friday morning

* locally heavy rainfall of 1 to 3 inches is possible this
evening and overnight. Rainfall rates of 2 to 4 inches per
hour are also possible... dropping an inch of rain or more in 15
to 30 minutes.

* Areas that have received heavy rains in the past 3 to 10 days
could see flash flooding on creeks and streams with these
additional rains... and any urbanized areas that receive the
heaviest rainfall rates could see widespread flooding of streets
and underpasses.Precautionary/preparedness actions...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should flash flood warnings be issued.









Forecast as of 4:20 PM CDT on July 9, 2009

Flash Flood Watch in effect from 7 PM CDT this evening through Friday morning...
Tonight
Mostly cloudy with a chance of thunderstorms. Some thunderstorms may be severe with heavy rainfall in the evening. Lows in the mid 60s. Northeast winds 5 to 15 mph. Chance of rain 50 percent.
Friday
Mostly cloudy. Chance of thunderstorms in the morning... then slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Northeast winds 5 to 10 mph. Chance of rain 40 percent.
Friday Night
Partly cloudy. Lows in the lower 60s. North winds 5 to 10 mph.
Saturday
Partly cloudy. Highs in the lower 80s. Northwest winds 5 to 10 mph becoming southwest in the afternoon.
Saturday Night
Partly cloudy in the evening...then mostly cloudy with a 30 percent chance of thunderstorms after midnight. Lows in the lower 60s. South winds 5 to 10 mph.
Sunday
Partly sunny with a 30 percent chance of thunderstorms. Highs in the mid 80s.
Sunday Night
Mostly cloudy with a 40 percent chance of thunderstorms. Lows in the mid 60s.
Monday
Partly sunny with a 20 percent chance of thunderstorms. Highs in the mid 80s.
Monday Night
Mostly cloudy with a 30 percent chance of thunderstorms. Lows in the upper 60s.
Tuesday
Partly sunny with a 20 percent chance of thunderstorms. Highs in the mid 80s.
Tuesday Night
Partly cloudy with a 20 percent chance of thunderstorms. Lows in the lower 60s.
Wednesday through Thursday
Partly cloudy. Highs in the mid 80s. Lows in the lower 60s.
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