Suppression Forecast
Issued by NWS Aberdeen, SD

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000
FNUS73 KABR 211103
FWSABR

Spot Forecast for Keystone Pipeline Oil Spill...NWS ABR/Marshall County EM
National Weather Service Aberdeen SD
503 AM CST Tue Nov 21 2017

Forecast is based on incident time of 0800 CST on November 21.
If conditions become unrepresentative...contact the National Weather
Service in Aberdeen SD.

.DISCUSSION...
An area of high pressure building into the region will bring cold
temperatures, along with gusty northwesterly winds. The winds will
subside later this afternoon. High temperatures today will only warm
into the 20s. With light and variable winds tonight, along with clear
skies, low temperatures will fall into the single digits and low teens.

After a cold start to the day on Wednesday, warmer temperatures will
move back into the region with highs expected in the mid 30s. There is
still a small chance for a passing snow or rain shower Wednesday morning,
into early afternoon.

.TODAY...

Sky/weather.........Mostly sunny (25-35 percent cloud).
Max temperature.....24-29.
Min humidity........42-47 percent.
Surface winds.......Northwest winds 25 to 35 mph early, diminishing to 5
                    to 15 mph in the afternoon.
Chance of pcpn......0 percent.

TIME (CST)      8 AM   10 AM  NOON   2 PM   4 PM   6 PM
Sky (%).........45     29     7      7      14     26
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Chc of pcpn (%).0      0      0      0      0      0
Temp............17     19     22     25     25     20
RH..............64     59     52     46     46     54
Surface wind....NW 23  NW 22  NW 21  NW 18  NW 13  NW 6
Surface wnd gst.30     30     30     25     20     10

.TONIGHT...

Sky/weather.........Mostly clear (15-25 percent cloud).
Min temperature.....8-13.
Max humidity........75-80 percent.
Surface winds.......Northwest winds around 5 mph early in the
                    evening, becoming light and variable, then,
                    becoming south 6 to 8 mph late.
Chance of pcpn......10 percent.

TIME (CST)      7 PM   9 PM   11 PM  1 AM   3 AM   5 AM
Sky (%).........23     18     13     10     7      24
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Chc of pcpn (%).0      0      0      0      0      0
Temp............18     15     14     12     10     10
RH..............59     70     70     76     80     80
Surface wind....NW 5   W 3    SW 2   SW 1   S 3    S 6
Surface wnd gst.       5                    5      10

.WEDNESDAY...

Sky/weather.........Becoming mostly cloudy early (65-75 percent
                    cloud), then becoming mostly sunny late
                    (40-50 percent cloud). A slight chance of
                    snow in the morning. Then a slight chance of
                    rain in the early afternoon.
Max temperature.....34-39.
Min humidity........45-50 percent.
Surface winds.......Southwest winds 10 to 18 mph.
Chance of pcpn......20 percent.

TIME (CST)      7 AM   9 AM   11 AM  1 PM   3 PM   5 PM
Sky (%).........43     66     83     85     65     52
Weather cov.....                     S CHC  S CHC  S CHC
Weather type....NONE   NONE   NONE   RAIN   RAIN   RAIN
Tstm cov........
Chc of pcpn (%).10     10     10     20     20     20
Temp............13     18     26     33     36     34
RH..............73     66     54     47     47     56
Surface wind....S 10   S 15   S 17   S 18   SW 17  SW 13
Surface wnd gst.15     20     25     30     25     20

.FORECAST DAYS 3 THROUGH 7...
.THANKSGIVING DAY...
Partly cloudy. Lows in the lower 20s. Highs in the mid 40s. West
winds 5 to 13 mph.
.FRIDAY...
Partly cloudy. A chance of rain. Breezy. Lows in the mid 30s.
Highs in the lower 50s. Southwest winds 16 to 26 mph.
.SATURDAY...
Partly cloudy. Lows in the upper 20s. Highs in the upper 30s.
Northwest winds 12 to 21 mph.
.SUNDAY...
Partly cloudy. Lows around 19. Highs in the mid 30s.
.MONDAY...
Partly cloudy. Lows in the mid 20s. Highs in the lower 40s.

$$
Forecaster...Dorn
Requested by...NWS ABR
Type of request...HAZMAT
.TAG 1718972.3/ABR
.EMAIL nws.aberdeen@noaa.gov



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