Harrisburg, SD

78.8°F / 26.0°C
Heat Index: 82°F / 28°C
Humidity: 86%
Dew Point: 74°F / 23°C
Wind: ENE at 0.0 mph / 0.0 km/h
Pressure: 29.72 in / 1006 hPa (Falling)
Visibility: 10.0 miles / 16.1 kilometers
Clouds: Mostly Cloudy (BKN) : 3200 ft / 975 m
Mostly Cloudy (BKN) : 13000 ft / 3962 m
Overcast (OVC) : 25000 ft / 7620 m
Yesterday's Maximum: 82°F / 28°C
Yesterday's Minimum: 60°F / 16°C
UV: 0 out of 16
Sunrise:5:52 AM CDT
Sunset:9:10 PM CDT
Moon Rise:11:33 PM CDT
Moon Set:10:05 AM CDT
Moon Phase Waning Gibbous
NOAA Weather Radio
METAR KFSD 060156Z 18011KT 10SM BKN032 BKN130 OVC250 28/23 A2975 RMK AO2 SLP063 T02780228
As of: 9:46 PM CDT on July 05, 2015
Observed at: Lewis Park, Sioux Falls, SD

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73° | 49°F
23° | 9°C
73° | 50°F
23° | 10°C
75° | 56°F
24° | 13°C
Tomorrow is forecast to be
Much Cooler than today.
Mostly cloudy. Chance of thunderstorms in the evening...then widespread thunderstorms after midnight. Some thunderstorms may produce damaging winds...small hail and heavy rainfall after midnight. Lows around 69. South winds 10 to 15 mph becoming southeast 5 to 10 mph after midnight. Gusts around 25 mph.
Cloudy with thunderstorms in the morning...then partly cloudy with slight chance of light showers in the afternoon. Highs around 75. North winds 10 to 20 mph becoming 15 to 20 mph in the afternoon. Gusts around 30 mph.
Monday Night
Mostly clear. Lows around 53. North winds 5 to 10 mph. Gusts around 20 mph in the evening.
Sunny. Highs around 73. North winds 5 to 10 mph.
Tuesday Night
Mostly clear. Lows around 53. East winds 5 to 10 mph becoming southeast after midnight.
Partly cloudy. Highs around 74.
Wednesday Night
Mostly cloudy. Lows around 60.
Thursday and Thursday Night
Partly cloudy with a 20 percent chance of thunderstorms. Highs around 79. Lows around 61.
Partly cloudy. Highs around 83.
Friday Night and Saturday
Mostly cloudy. A 30 percent chance of thunderstorms. Lows around 66. Highs around 85.
Saturday Night
Partly cloudy with a 20 percent chance of thunderstorms. Lows around 67.
Partly cloudy. Highs around 89.
As of: 7:42 PM CDT on July 5, 2015 from station 57032
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Scientific Forecaster Discussion

Warnings & Notices

Severe Thunderstorm Watch

Expires 2:00 AM CDT on July 06, 2015
Statement as of 9:43 PM CDT on July 05, 2015

Severe Thunderstorm Watch 393 remains in effect until 200 am CDT

. South Dakota counties included are

Bon Homme Brookings Clark
Clay Codington Deuel
Grant Hamlin hand
Hanson Hutchinson Kingsbury
Lake Lincoln McCook
Miner Minnehaha Moody
Roberts Spink Turner

Flash Flood Watch

Expires 10:00 AM CDT on July 06, 2015
Statement as of 9:02 PM CDT on July 5, 2015

... Flash Flood Watch in effect through Monday morning...

The National Weather Service in Sioux Falls has issued a

* Flash Flood Watch for portions of northwest Iowa... southwest
Minnesota and South Dakota... including the following areas...
in northwest Iowa... Lyon IA and Osceola. In southwest
Minnesota... Cottonwood... Jackson... Lincoln MN... Lyon MN...
Murray... Nobles... Pipestone and rock. In South Dakota...
Aurora... Bon Homme... Brookings... Brule... Charles Mix... Clay
SD... Davison... Douglas... Gregory... Hanson... Hutchinson...
Jerauld... Kingsbury... Lake... Lincoln SD... McCook... Miner...
Minnehaha... Moody... Sanborn... Turner and Yankton.

* Through Monday morning

* thunderstorms with the potential to produce locally heavy
rainfall are expected to expand across the area overnight.
Rainfall amounts of 2 to 4 inches or more are possible in some
locations... as slow-moving storms move across the region.

* Areas streams... creeks and rivers may climb to and exceed
bankfull. Low water spots will also likely fill with water and
cause potentially dangerous driving conditions. Very high
rainfall rates may also cause flash flooding in urban areas.

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.

Public Information Statement

Statement as of 4:54 PM CDT on July 5, 2015

... Severe Thunderstorm Watch safety rules...

A Severe Thunderstorm Watch means that conditions are favorable
for the development of severe weather in the designated area.
During a watch there is no cause for immediate concern. You should
go about your normal business... but be on the lookout and keep up
to date on the latest weather developments. Public safety
officials should activate prearranged plans.

A Severe Thunderstorm Warning... on the other hand... means that a
severe thunderstorm has been sighted or indicated by radar. People
in the path of the storm should take immediate action to safeguard
themselves and their family.

Technically speaking... a severe thunderstorm is defined as having
wind gusts which exceed 58 mph and/or hail at least 1 inch in
diameter. However... as these storms develop... they can be
accompanied by tornadoes. Listen to NOAA Weather Radio or other
local media to learn if a warning has been issued for your area.
Also... keep a close watch on the thunderstorms as tornadoes can
form quickly. If you see a tornado... move quickly into a basement.
If none is available... seek shelter in a small interior room on
the lowest floor and stay away from outside walls... doors and
windows. In schools... factories or other institutional type
buildings... stay out of auditoriums and gymnasiums.

View South Dakota Advisories


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